Power Roof Ventilator Installation, Operation, and Maintenance Manual. Down-blast Centrifugal Fan Utility Set Axial Fan

Transcription

1 Power Roof Ventilator Installation, Operation, and Maintenance Manual Up-blast Centrifugal Curb Mount Utility Set Up-blast Centrifugal Fan Down-blast Centrifugal Fan Utility Set Axial Fan RECEIVING AND INSPECTION Upon receiving unit, check for any interior and exterior damage, and if found, report it immediately to the carrier. Also check that all accessory items are accounted for and are damage free. Turn the blower wheel by hand to verify free rotation and check the damper (if supplied) for free operation. WARNING!! Installation of this ventilator should only be performed by a qualified professional who has read and understands these instructions and is familiar with proper safety precautions. Improper installation poses serious risk of injury due to electric shock, contact with rotating equipment, and other potential hazards. Read this manual thoroughly before installing or servicing this equipment. ALWAYS disconnect power prior to working on fan. Save these instructions. This document is the property of the owner of this equipment and is required for future maintenance. Leave this document with the owner when installation or service is complete. A August 2013 Rev. 8

2 TABLE OF CONTENTS WARRANTY... 3 INSTALLATION... 4 Mechanical... 4 Site Preparation... 4 Roof Mounting... 4 Wall Mounting... 5 Curb and Ductwork... 5 Duct Routing Examples... 6 Up-Blast Wall Mount Installation... 7 Up-Blast Through Wall Mount Installation... 8 Down-Blast Installation... 8 Typical Hinge Kit Centrifugal Upblast... 9 Typical Grease Box Installation... 9 Up-Blast Utility Set Installation Up-Blast Utility Set Inlet Options Up-Blast Utility Set Discharge Extension OptionUp-Blast Curb Mount Utility Set Installation Up-Blast Curb Mounted Utility Set Hinging Instructions Up-Blast Curb Mounted Utility Set Discharge Extension Option Up-Blast Curb Mounted Utility Set Rain Cap Option Electrical Copper Wire Ampacity PSC (Permanent Split Capacitor) Motor Speed Control ECM (Electronically Controlled Motor) Speed Control Motorized Damper Fan to Building Wiring Connection OPERATION Start Up Special Tools Required Start Up Procedure Pulley Setscrew Torque Pulley Alignment Proper Belt Tension Pulley Combination Chart Troubleshooting Troubleshooting Chart MAINTENANCE General Maintenance Bearing Grease Charge Bearing Grease Type weeks after startup Every 3 months Yearly Start-Up and Maintenance Documentation Job Information Fan Unit Information Maintenance Record Factory Service Department

3 WARRANTY This equipment is warranted to be free from defects in materials and workmanship, under normal use and service, for a period of 12 months from date of shipment. This warranty shall not apply if: 1. The equipment is not installed by a qualified installer per the MANUFACTURER S installation instructions shipped with the product, 2. The equipment is not installed in accordance with federal, state and local codes and regulations, 3. The equipment is misused or neglected, 4. The equipment is not operated within its published capacity, 5. The invoice is not paid within the terms of the sales agreement. The MANUFACTURER shall not be liable for incidental and consequential losses and damages potentially attributable to malfunctioning equipment. Should any part of the equipment prove to be defective in material or workmanship within the 12-month warranty period, upon examination by the MANUFACTURER, such part will be repaired or replaced by MANUFACTURER at no charge. The BUYER shall pay all labor costs incurred in connection with such repair or replacement. Equipment shall not be returned without MANUFACTURER S prior authorization and all returned equipment shall be shipped by the BUYER, freight prepaid to a destination determined by the MANUFACTURER. 3

4 INSTALLATION It is imperative that this unit is installed and operated with the designed airflow and electrical supply in accordance with this manual. If there are any questions about any items, please call the service department at for warranty and technical support issues. Mechanical WARNING: DO NOT RAISE VENTILATOR BY THE HOOD, BLOWER OR MOTOR SHAFT, OR BEARINGS USE LIFTING LUGS PROVIDED OR A SLING Site Preparation 1. Provide clearance around installation site to safely rig and lift equipment into its final position. Supports must adequately support equipment. Refer to manufacturer s estimated weights. 2. Consider general service and installation space when locating unit. 3. Locate unit close to the space it will serve to reduce long, twisted duct runs. 4. The fan discharge must be located at least 10 feet away from any supply intakes. The fan discharge shall be located in accordance with the applicable building code provisions. Roof Mounting 1. Ventilators are designed for installation atop a prefabricated or factory built roof curb. Follow manufacturer s instructions for proper curb installation. 2. If a backdraft damper is required, it should be secured within the curb using sheet metal screws, to the bottom of a damper box or damper support flanges located below the roof deck. CAUTION: NFPA-96 RECOMMENDS THAT DAMPERS SHOULD NOT BE INSTALLED WHEN EXHAUSTER IS USED FOR REMOVAL OF SMOKE AND GREASE LADEN VAPORS FROM COMMERCIAL KITCHEN EQUIPMENT. CONSULT STATE AND LOCAL CODES FOR DETAILED REQUIREMENTS. 3. If an up-blast fan is used for kitchen hood exhaust, ensure discharge is at least 40 inches above the roof surface in accordance with NFPA On an up-blast fan, normally the power cord is brought through the conduit tube located on the top skirt on the outside of the unit. 5. Secure ventilator curb through vertical portion of the ventilator base assembly flange using a minimum of eight (8) lug screws, anchor bolts, or other suitable fasteners (not furnished). 6. Before connecting fan motor to power source verify power line wiring is de-energized. 7. Connect power supply wiring to the motor as indicated on the motor nameplate or terminal box cover. Make certain that the power source is compatible with the requirements of your equipment. 8. Before powering up fan check ventilator wheel for free rotation. 9. Check all fasteners for tightness. 10. Re-install motor dome. 11. A drain pipe is provided for single-point drainage of water and residue on up-blast fans. The drain pipe should be positioned towards the roof slope. Some means for collection of this residue must be provided, either a container directly under the trough or use of an adapter and pipe to carry the residue to a remote collection point. An optional down spout and grease collection box is available as an accessory item for up-blast fans. 4

5 Wall Mounting 1. The same instructions, warnings and notes found under Roof Mounting section will apply. Refer to steps 2 and 3, and steps 5 through Masonry Wall: Around the wall opening install an angle iron frame at least 2 x2 x ¼. Frame should be approximately 1/2 smaller than the inside base dimension of the ventilator. Secure the lead cinch type anchors with non-ferrous bolts (3 per side). The ventilator should be mounted to the mounting angle with self-taping sheet metal screws (3 per side). 3. Wood Sidings: Around the wall opening install a wooden frame 2 high x 2 wide. Frame should be approximately 1/2 smaller than the inside base dimension of the ventilator. Secure with counter-sunk expansion type lag bolts (3 per side). The ventilator should then be mounted to the mounting frame with the square head wood screws (3 per side) 3/8 minimum. 4. Steel wall mount brackets are also available as a factory option for the fan. 5. The mounting flange connections should be coated with a suitable caulking compound or an approved waterproof mastic sealer. 6. Wall mount application is not recommended from fans with wheels 30 or larger. IMPORTANT: OSHA REGULATIONS REQUIRE THE VENTILATOR TO BE MOUNTED AT LEAST EIGHT (8) FEET ABOVE GROUND OR FLOOR LEVEL. Curb and Ductwork This fan was specified for a specific CFM and static pressure. The ductwork attached to this unit will significantly affect the airflow performance. Flexible ductwork and square elbows should not be used. Also, transitions and turns in ductwork near the fan inlet will cause system effect and will drastically increase the static pressure and reduce airflow. Follow SMACNA guides and recommendations for the remaining duct run. Fans designed for rooftop installation should be installed on a prefabricated or factory built roof curb. Follow curb manufacturer s instructions for proper curb installation. Curbs should be connected to structural roof members with at least four (3) lug screws, anchor bolts, or other suitable fasteners (not furnished) per curb flange. Curb flanges should be caulked to roof. The fan should be installed on a curb and/or rail elevated not less than 14 above any surface. Be sure duct connection and fan outlet are properly aligned and sealed. Secure fan to curb through vertical portion of the ventilator base assembly flange using a minimum of eight (8) lug screws, anchor bolts, or other suitable fasteners (not furnished). Shims may be required depending upon curb installation and roofing material. Check all fasteners for tightness. The diagrams below show different mechanical installation configurations. 5

6 Duct Routing Examples Proper Duct Routing Improper Duct Routing 6

7 Up-Blast Roof Mount Installation Up-Blast Wall Mount Installation 7

8 Up-Blast Through Wall Mount Installation Down-Blast Installation 8

9 Typical Hinge Kit Centrifugal Upblast Typical Grease Box Installation 9

10 Up-Blast Utility Set Installation Up-Blast Utility Set Inlet Options 10

11 Up-Blast Utility Set Discharge Extension Option 11

12 Up-Blast Curb Mount Utility Set Installation Up-Blast Curb Mounted Utility Set Hinging Instructions 12

13 Up-Blast Curb Mounted Utility Set Discharge Extension Option Up-Blast Curb Mounted Utility Set Rain Cap Option 13

14 Electrical Before connecting power to the fan, read and understand this entire section of this document. As-built wiring diagrams are available with each fan by the factory. Electrical wiring and connections should be done in accordance with local ordnances and the National Electric Code, ANSI/NFPA70. Be sure the voltage and phase of the power supply and the wire amperage capacity is in accordance with the motor nameplate. For additional safety information refer to AMCA publication , Recommended Safety Practices for Users and Installers of Industrial and Commercial Fans. 1. Always disconnect power before working on or near a fan. Lock and tag the disconnect switch or breaker to prevent accidental power up. 2. A disconnect switch is shipped with every fan. The switch is located on the exterior of up-blast fans and in the interior of down-blast fans. On down-blast direct drive fans, the disconnect function is built into the speed controller. WARNING!! Disconnect power before installing or servicing fan. High voltage electrical input is needed for this equipment. This work should be performed by a qualified electrician. Copper Wire Ampacity Wire Size AWG Maximum Amps A dedicated branch circuit should supply the motor circuit with short circuit protection according to the National Electric Code. This dedicated branch should be run to the junction box mentioned above and connected as shown in a following illustration labeled Fan to Building Wiring Connection. 4. Make certain that the power source is compatible with the requirements of your equipment. The fan nameplate identifies the proper phase and voltage of the motor. 5. Before connecting fan to building power source, verify power line wiring is de-energized. 6. Secure the power cable to prevent contact with sharp objects. 7. Do not kink power cable and never allow the cable to come in contact with oil, grease, hot surfaces or chemicals. 8. Before powering up fan check fan wheel for free rotation and make sure that the interior of the fan is free of loose debris or shipping materials. 9. If any of the original wire supplied with the fan must be replaced, it must be replaced with type TW wire or equivalent. IMPORTANT: FANS WITH HINGE KITS REQUIRE ENOUGH SLACK IN THE WIRING TO THE FAN TO ALLOW FAN TO TILT BACK TO THE OPEN POSITION. ELECTRICIAN MUST CHECK THIS AND ACCOUNT FOR THE RANGE OF MOTION OF THE FAN. 14

15 PSC (Permanent Split Capacitor) Motor Speed Control Some single phase direct drive fans contain speed controls that regulate the amount of voltage going to the motor. Specific PSC motors must be used in conjunction with speed controls. The speed control has a knob with an off position, and high to low range. At high speed, the speed control allows all of the line voltage to pass right to the motor. A minimum speed adjustment is provided to allow independent control of the minimum speed setting. Minimum speed adjustment ensures motor runs with sufficient torque to prevent stalling. To adjust this: 1) Motor must be in actual operating conditions to achieve proper speed adjustment. Motor will not slow down unless proper load is applied. 2) Turn main control knob to lowest speed position. 3) Locate and adjust minimum speed setting and adjust with small screw driver. This can be found under the speed control faceplate. (rotate clockwise to decrease minimum speed; counterclockwise to increase minimum speed). 4) Motor will now operate from this preset minimum speed to full speed. The lowest minimum voltage that may be applied to these motors is 65VAC. Running lower voltages to the motor can cause premature failure and overheating problems. ECM (Electronically Controlled Motor) Speed Control ECM motors and control allows accurate manual adjustment of fan speed. The benefit of ECM motors is exceptional efficiency, performance, and motor life. The control used with ECM motors features a 4 digit LED numerical display. The blue knob on the control allows the user to set the flow index with a screwdriver. Twenty seconds later, the display shows the motor RPM. Then, the display periodically alternates between the flow index and motor RPM. The flow index has a range of 0 to 100% and is typically linear with motor RPM. The ECM control requires a 24 VAC input and can locally turn the motor on and off. The motor can be adjusted between 300 RPM and maximum speed with this control. NOTE: To adjust the speed of 3 phase direct drive motors, a variable frequency drive is required. Motorized Damper On units shipped with the optional motorized damper, power must be supplied to the damper according to the damper nameplate. The damper motor is controlled external to the fan. External wiring to the damper motor is required. 15

16 Fan to Building Wiring Connection 16

17 OPERATION Prior to starting up or operating the ventilator, check all fasteners for tightness. In particular, check the set screw in the wheel hub, bearings and the fan sheaves (pulleys). With power to the fan OFF or prior to connecting ventilator to power, turn the fan wheel by hand to be sure it is not striking the inlet or any obstacles. Re-center if necessary. Start Up Special Tools Required AC Voltage Meter Tachometer Amperage Meter Standard Hand Tools Start Up Procedure 1. Check all electrical connections for tightness and continuity. 2. Check pulley alignment and belt tension as described below for belt drive fans. 3. Inspect the condition of the damper and damper linkage, if provided. 4. Inspect the air-stream for obstructions or debris in wheel. 5. Compare the supplied voltage with the fan s nameplate voltage. If this does not match, correct the problem. 6. Start the fan up, by turning the external disconnect to the ON position, and shut it OFF immediately to check rotation of the wheel with the directional arrow on the blower scroll. Reversed rotation will result in poor air performance, motor overloading and possible burnout. For units equipped with a single-phase motor check the motor wiring diagram to change rotation. For 3-phase motors, any two power leads can be interchanged to reverse motor direction. 7. When the fan is started up, observe the operation and check for any unusual noises. 8. Switch the external disconnect back to the ON position and with the air system in full operation and all ducts attached, measure the system airflow. Motor sheave (pulley) is variable pitch, and allows for an increase or decrease of the fan RPM to adjust the airflow, as shown in the illustration below. For your convenience, a RPM chart is included in the following pages. If the fan is a direct drive version, it may have a speed control to adjust speed. 9. Once the proper airflow is achieved, measure and record the fan speed with a reliable tachometer. Caution - Excessive speed will result in motor overloading or bearing failure. Do not set fan RPMs higher than specified in the maximum RPM chart. See the troubleshooting guide for more information. 10. Measure and record the voltage and amperage to the motor and compare with the motor nameplate to determine if the motor is operating under safe load condition. 11. Once the rpm of the ventilator has been properly set, disconnect power and recheck belt tension and pulley alignment as described below. Pulley Setscrew Torque Thread Size Torque (IN/Lb) No. 10 (bushing) 32 1/4 (bushing) 72 5/ Pulley Adjustment Illustration 17

18 Pulley Adjustment (Belt Drive Fans) The adjustable motor pulley is factory set for the RPM specified. Speed can be increased by closing or decreased by opening the adjustable motor sheave. Two groove variable pitch pulleys must be adjusted an equal number of turns open or closed. Any increase in speed represents a substantial increase in horsepower required by the unit. Motor amperage should always be checked to avoid serious damage to the motor when the speed is varied. Always torque setscrews according to the setscrew torque chart. Pulley Alignment Proper Belt Tension 18

19 Pulley Combination Chart Motor RPM /3 to 1-1/2 HP MOTOR PULLEY Dd1 Dd2 Pd1 Pd2 AX BELTS 1VL Open TURNS ON MOTOR PULLEY Closed BLOWER PULLEY DATUM DIAMETER PITCH DIAMETER 5 41/2 4 31/2 3 21/2 2 11/2 1 1/2 0 AK /3 to 1-1/2 HP MOTOR PULLEY Dd1 Dd2 Pd1 Pd2 AX BELTS 1VL Open TURNS ON MOTOR PULLEY Closed BLOWER PULLEY DATUM DIAMETER PITCH DIAMETER 5 41/2 4 31/2 3 21/2 2 11/2 1 1/2 0 AK AK AK AK AK AK AK AK to 5 HP MOTOR PULLEY Dd1 Dd2 Pd1 Pd2 BX BELTS 2VP Open TURNS ON MOTOR PULLEY Closed BLOWER PULLEY DATUM DIAMETER PITCH DIAMETER 6 51/2 5 41/2 4 31/2 3 21/2 2 11/2 1 1/2 0 2BK160H BK140H BK120H BK110H BK100H BK90H BK80H BK70H BK60H BK55H BK50H /2 to 10 HP MOTOR PULLEY Dd1 Dd2 Pd1 Pd2 BX BELTS 2VP Open TURNS ON MOTOR PULLEY Closed BLOWER PULLEY DATUM DIAMETER PITCH DIAMETER 6 51/2 5 41/2 4 31/2 3 21/2 2 11/2 1 1/2 0 2BK160H BK140H BK120H BK110H BK100H BK90H BK80H to 5 HP MOTOR PULLEY Dd1 Dd2 Pd1 Pd2 BX BELTS 2VP Open TURNS ON MOTOR PULLEY Closed BLOWER PULLEY DATUM DIAMETER PITCH DIAMETER 6 51/2 5 41/2 4 31/2 3 21/2 2 11/2 1 1/2 0 2B5V B5V B5V B5V B5V B5V B5V B5V B5V B5V /2 to 10 HP MOTOR PULLEY Dd1 Dd2 Pd1 Pd2 BX BELTS 2VP Open TURNS ON MOTOR PULLEY Closed BLOWER PULLEY DATUM DIAMETER PITCH DIAMETER 6 51/2 5 41/2 4 31/2 3 21/2 2 11/2 1 1/2 0 2B5V B5V B5V B5V B5V B5V B5V B5V B5V B5V to 20 HP MOTOR PULLEY Dd1 Dd2 Pd1 Pd2 BX BELTS 2VP Open TURNS ON MOTOR PULLEY Closed BLOWER PULLEY DATUM DIAMETER PITCH DIAMETER 6 51/2 5 41/2 4 31/2 3 21/2 2 11/2 1 1/2 0 2B5V B5V B5V B5V B5V B5V B5V B5V

20 Troubleshooting The following table lists causes and corrective actions for possible problems with the fan units. Review this list prior to consulting manufacturer. Troubleshooting Chart Problem Potential Cause Corrective Action Fan Inoperative Blown fuse or open circuit breaker Replace fuse or reset circuit breaker and check amps Disconnect switch in Off position Turn to On position Motor wired incorrectly Check motor wiring to wiring diagram located on fan motor Broken fan belt Replace belt Motor starter overloaded Reset starter and check amps Motor Overload Fan rotating in the wrong direction Be sure fan is rotating in the direction shown on rotation label Fan speed is too high Reduce fan RPM Motor wired incorrectly Check motor wiring to wiring diagram located on fan motor Overload in starter set too low Set overload to motor FLA value Motor HP too low Determine if HP is sufficient for job Duct static pressure lower than Reduce fan RPM design Insufficient Airflow Fan rotating in the wrong direction Be sure fan is rotating in the direction shown on rotation label Poor inlet/outlet conditions There should be a straight clear duct at the inlet/outlet Damper not fully open Inspect damper linkage and replace damper motor if needed Duct static pressure higher than design Improve ductwork to eliminate or reduce duct losses Blower speed too low Increase fan RPM. Do not overload motor Belt slippage Adjust belt tension Excessive Airflow Blower speed to high Reduce fan RPM Duct static pressure lower than Reduce fan RPM design Excessive Vibration and Noise Misaligned pulleys Align pulleys Damaged or unbalanced wheel Replace wheel Fan is operating in the unstable region of the fan curve Refer to performance curve for fan Bearings need lubrication or Lubricate or replace replacement Fan speed is too high Reduce fan RPM Belts too loose, worn or oily Inspect and replace if needed 20

21 MAINTENANCE To guarantee trouble free operation of this fan, the manufacturer suggests following these guidelines. Most problems associated with fan failures are directly related to poor service and maintenance. Please record any maintenance or service performed on this fan in the documentation section located at the end of this manual. WARNING: DO NOT ATTEMPT MAINTENANCE ON THE FAN UNTIL THE ELECTRICAL SUPPLY HAS BEEN COMPLETELY DISCONNECTED General Maintenance 1. Fan discharge and approaches to ventilator should be kept clean and free from any obstruction. 2. Motors are normally permanently lubricated. Check bearings periodically. If they have grease fittings lubricate each season. Use caution when lubricating bearings, wipe the fittings clean, the unit should be rotated by hand while lubricating. Bearings should be lubricated every 2 months. The type of grease and the amount of grease can is shown below. Caution: Bearings are sealed and over-greasing bearings can cause damage to the bearings. Do not grease until grease comes out of seals. Only add the appropriate amount of grease. 3. All fasteners should be checked for tightness each time maintenance checks are preformed prior to restarting unit. 4. Fans require very little attention when moving clean air. Occasionally oil and dust may accumulate causing imbalance. If the fan is installed in a corrosive or dirty atmosphere, periodically inspect and clean the wheel, inlet and other moving parts to ensure smooth and safe operation. Bearing Grease Charge Bearing Grease Type 21

22 2 weeks after startup 1. Belt tension should be checked after the first 2 weeks of fan operation on belt drive fans. Belts tend to stretch and settle into pulleys after an initial start-up sequence. Do not tension belts by changing the setting of the motor pulley, this will change the fan speed and may damage the motor. To re-tension belts, turn the power to the fan motor OFF. Loosen the fasteners that hold the motor to the fan. Move the motor to the left or right to adjust the belt tension. Belt tension should be adjusted to allow 1/64 of deflection per inch of belt span. Exercise extreme care when adjusting V-belts as not to misalign pulleys. Any misalignment will cause a sharp reduction in belt life and produce squeaky noises. Over-tightening will cause excessive belt and bearing wear as well as noise. Too little tension will cause slippage at startup and uneven wear. Whenever belts are removed or installed, never force belts over pulleys without loosening motor first to relieve belt tension. When replacing belts, use the same type as supplied by the manufacturer. On units shipped with double groove pulleys, matched belts should always be used. 2. All fasteners should be checked for tightness each time maintenance checks are preformed prior to restarting unit. Every 3 months 1. Belt tension should be checked quarterly for belt drive fans. See instructions in the previous maintenance section. Over-tightening will cause excessive bearing wear and noise. Too little tension will cause slippage at startup and uneven wear. 2. Fans need to be cleaned quarterly, and more often in severe conditions. Yearly 1. Inspect bearings for wear and deterioration. Replace/grease if necessary. 2. Inspect belt wear and replace torn or worn belts on belt drive fans. 3. Inspect bolts and set screws for tightness. Tighten as necessary. 4. Inspect motor for cleanliness. Clean exterior surfaces only. Remove dust and grease from the motor housing to ensure proper motor cooling. Remove dirt and grease from the wheel and housing to prevent imbalance and damage. 22

23 Start-Up and Maintenance Documentation START-UP AND MEASUREMENTS SHOULD BE PERFORMED AFTER THE SYSTEM HAS BEEN AIR BALANCED (Warranty will be void without completion of this form) Job Information Job Name Address City State Zip Phone Number Fax Number Contact Purchase Date Service Company Address City State Zip Phone Number Fax Number Contact Start-Up Date Fan Unit Information Refer to the start-up procedure in this manual to complete this section. Name Plate and Unit Information Field Measured Information Model Number Voltage Serial Number Amperage** Volts RPM Hertz Phase FLA Blower Rotation Correct HP Incorrect Blower Pulley Motor Pulley Belt Number **If measured amps exceed the FLA rating on the nameplate, fan RPM must be reduced to decrease the measured amps below the nameplate FLA rating. Maintenance Record Date Service Performed 23

24 Date Service Performed Factory Service Department Phone: Fax:

25 Inline Fume Exhaust Fans INSTALLATION, OPERATION & MAINTENANCE MANUAL IM-1080 August 2014 INTRODUCTION This manual has been prepared to guide the users of TFE, QFE, QIFE, and TVIFE Fume Exhaust Fans in the proper installation, operation and maintenance procedures to insure maximum equipment life with trouble-free operation. CONTENTS TFE and QFE QIFE TVIFE Inspection and Receiving...2 Handling and Rigging...2 Storage...2 Installation Pre-Installation Checklist...2 Roof Curb Installation...3 Mixing Box Assembly Installation...3 Fan and Windband Installation...3 Drain Connections...4 Damper and Actuator Installation...4 Operation Checklist...5 Maintenance Fan...5 Motor...5 Bearing...5 Drive...6 Jib Crane Operation...6 Troubleshooting...7 Caution: Fan systems include rotating components and electrical devices. Proper care must be taken during installation and maintenance of all fan system components to protect personnel. This includes, but is not limited to the use of protective enclosures, guards, locking devices to stop rotating parts, and electrical disconnect lock-outs. Refer to applicable local codes to ensure compliance for all protective devices. Fans create a suction at the inlet. Care should be taken around the inlet of the fan, whether it is in operation or not. Make sure the inlet area is clear prior to energizing the system. This includes all personnel and loose, foreign objects Twin City Fan Companies, Ltd.

26 INSPECTION AND RECEIVING All Twin City Fan & Blower products are carefully constructed and inspected before shipment to insure the highest standards of quality and performance. Compare all components with the bill of lading or packing list to verify that the proper unit was received. Check each unit for any damage that may have occurred in transit. Any damage should be reported immediately to the carrier and the necessary damage report filed. HANDLING AND RIGGING Handling of all air moving equipment should be conducted by trained personnel and be consistent with safe handling practices. Verify the lift capacity and operating condition of handling equipment. Maintain handling equipment to avoid serious personal injury. Units shipped may be lifted with slings and spreader bars. Use well-padded chains, cables or nylon straps (see Figure 1). On most units, lifting lugs are fashioned to protect the fan and fan housing from damage. Never lift a fan by the inlet or discharge flange, shafting or drives, wheel, motor or motor base, or in any other manner that may bend or distort parts. Mixing plenum boxes configured for multiple fans mounted on a common unit are modular in design and may be broken down into smaller segments for ease of installation and handling. Figure 1. Lifting Locations UNIT STORAGE If fan installation is to be delayed, store the unit in an environmentally stable and protected area. During storage, the fan should not be subjected to vibration from external sources or bearing damage may occur. The unit should be reasonably protected from any accidental impacts. Cover the fan to protect coatings and to prevent any foreign material or moisture from entering the inlet or discharge. Take care to protect the motor, drives and bearings. Extended storage requires monthly inspections. Check for corrosion or damage to the unit and for debris within the fan. Bearings tend to take on moisture if the atmosphere in which they are stored is not at a constant temperature. To avoid corrosion, it is necessary to keep the bearings full of grease and to rotate them periodically. Even when full of grease, bearings will take on moisture, so it is necessary to purge the bearings with new grease to expel moisture every thirty days. It is recommended that the bearings be purged with grease while being rotated by hand. Do not use high pressure greasers as they may ruin the bearing seals. The drives and belts should be removed if the fan is to be stored for a prolonged period. The drives should be labeled for service and stored in a dry place. Belts should be removed, coiled without kinks, placed in a heavy carton, and stored in a dry, well-ventilated place. To prevent belt deterioration storage conditions should not exceed 85 F and 70% humidity. If belts show signs of deterioration, they should be replaced prior to startup. Motors should be stored in a clean, dry, vibration-free location. The packaging should be opened up enough to allow air circulation around the motor. The winding temperature should be kept slightly above that of the surroundings to prevent condensation. This can be accomplished by energizing the internal heaters, if the motor is so equipped, or by using space heaters. If it is impossible to heat the windings, the motor should be wrapped tightly with a waterproof material which also encloses several bags of desiccant. Replace the desiccant regularly to prevent moisture problems. The motor rotor should also be rotated regularly (monthly) to assure the bearing parts are well greased. Start-Up When the unit is removed from storage, all fan bearing grease should be purged and replenished with fresh grease as per the lubrication decal. The motor should be measured to verify that the resistance is still at a satisfactory level compared to the value recorded prior to storage. INSTALLATION Pre-Installation Checklist Prior to fully assembling and installing, inspect the fan and ancillary components to ensure it is in working order. Check all external and internal hardware on the fan, wheel, bearings, drive motor base and accessories for tightness. Rotate the fan wheel by hand and assure no parts are rubbing. Adjust components prior to installation as adjustments are easier while lower to grad. Check proper wheel clearances to be sure near tolerance. The wheel will need to be realigned after installation, therefore, clearances should be near tolerance. 2 Twin City Fan IM-1080

27 Roof Curb Installation Caution: Roof curbs should be square and level to ensure safe fan installation and proper sealing of gas stream to the fan. Figure 4. Mixing Box Roof curbs shall be installed and fully attached to structural support (by others) which is typically steel or concrete using 1/2" diameter bolts w/ 1-3/8" washers (by others) Figure 2. Bolted Installation For attachment to structural steel the curb can be continuously welded or stitch welded using 3/8" x 6" welds with a maximum of 3" spacing between welds. Welds should be evenly spaced along curb side and corners Figure 3. Welded Installation Mixing Plenum Box Assembly and Installation The modular plenum mixing boxes are designed to allow for easy installation and future expandability. Single mixing plenum boxes are fully assembled (less any dampers) to expedite installation. Depending on the size, multi-unit mixing boxes may or may not be assembled. When installing the mixing box(es), it is important to follow the guidelines for lifting and rigging on page 2. When a single-unit mixing plenum box is installed, prepare the roof curb or mounting structure. Lay gasket material on the top edge of the roof curb. Lift mixing box onto curb and square (level) mixing box. Depending on the air intake (side or bottom), the mixing box must be oriented to allow for direct duct connection into the mixing plenum box. Match drill roof curb to mixing plenum box. Attach mixing plenum box to curb using 1/2 diameter bolts with 1 3/8 washers (by others). For multi-unit configurations, some assembly may be required. There are at least two different assemblies in a multi-unit configuration. There is the mixing plenum box assembly and the mixing box spacer. See figure 4. There will be one less spacer than the quantity of mixing plenum boxes. To assemble, space the mixing boxes a distance apart that is slightly more than the width of the spacer section. Utilize a gasket between the mixing box and the spacer section to provide a tight seal. Install 316 stainless steel bolts to attach the spacer and the mixing box. Repeat as necessary for each section. When the multi-unit mixing plenum box is assembled, rig the mixing box system into place in accordance with Figure 1 to avoid any damage. Install mixing plenum box assembly onto a prepared (gasket material on mating surface) roof curb or mounting structure. Lay Square (level) mixing box. Install lag bolts into the mixing plenum box to roof curb as indicated. Fan and Windband Installation Follow proper handling instructions as provided earlier. Identify each fan and component and match the equipment up with the supplied customer drawing(s). Move the fan to the final mounting location. Remove skid, crates and packing materials carefully. For fans mounted directly to roof curb (supplied with a curb cap), place the fan on properly installed roof curb. Fans mounted on a mixing plenum box (supplied with mixing plenum box transition) require the installation of the mixing plenum box prior to installing fan. Fans shipped as a single unit shall be broken down into several parts. Install each item individually in the following order: 1. Fan and curb cap onto the installed roof curb -or- Fan and mixing plenum box transition onto installed mixing box. 2. Stack extension, if in the scope of supply (TFE/ QFE Only) 3. Windband Note: When installing the components, lifting lugs shall be utilized for safe installation. Lifting lugs are designed for the weight of the component they are welded to and should not be used to lift assemblies. Fan Housing Installation 1. Place supplied gasket around the perimeter of the mixing plenum box or roof curb. 2. Lower fan housing onto roof curb or mixing plenum box aligning the bolt holes on the two components. Allow for gasket to compress naturally prior to securing fan housing to the adjacent component. 3. Install 316 stainless steel hardware (provided) in all mounting holes. Use a commercially available antiseizing compound formulated for 316 stainless steel to hardware. Carefully level the unit on the roof curb or mixing plenum box. Be careful not to force the fan to the mounting structure. This may cause misalignment which may unsafe operating conditions, cause vibration and premature failure. 4. Check the alignment of the bearings. Shim or reposition the bearings if necessary. 5. Check face alignment of sheaves on belt driven fans. Check tension of belts to see if it is sufficient. Sheaves on belt driven fans are often provided with taperlock bushings. When tightening bushing bolts, proceed in a progressive manner to avoid cocking the tapered surfaces between the bushing and the sheave. 6. Check the tightness of the wheel on the shaft. Check the tightness of foundation bolts, motor bolts, sheaves, and bearings. Make sure there is no rubbing or binding and that the wheel-inlet cone clearances and overlap are correct. Twin City Fan IM

28 Stack Extension (QFE/TFE) Installation 1. Place supplied gasket around the perimeter of the fan outlet. 2. Lower the stack extension onto the fan housing aligning the bolt holes on the two components. Allow for gasket to compress naturally prior to securing fan housing to the adjacent component. 3. Install 316 stainless steel hardware (provided) in all mounting holes. Use a commercially available antiseizing compound formulated for 316 stainless steel to hardware. Windband Installation 1. Using the windband lifting lugs, raise the windband above the outlet of the fan assembly. Align the support brackets with the fan assembly discharge 2. Using caution not to swing the windband, insert the 316 stainless steel mounting hardware (provided) coated with anti-seize compound to join the two components. Damper and Actuator Installation Access to the Isolation Damper is obtained through opening the slide out door on the side of the plenum. Remove bolts from face of slide out door and remove damper/door assembly for inspection and maintenance. The 2-Position spring return actuator is attached to the damper shaft through the slide out door in a Nema 4 enclosure and can be removed with the damper/door assembly. Wiring is completed through knockouts in Nema 4 enclosure around the actuator. Access to Bypass Damper and Modulating Actuator for removal is obtained by removing the weatherhood covering the damper. Damper is attached to plenum face with standard zip screws. An inspection door is available on the side of the weather cover for standard inspection and maintenance of the damper. Wiring for the modulating actuator is fed through the knockouts in the weatherhood. Drain Connection/Installation Each section of the plenum mixing box as well as the fan housing contains a 3/4" NPT drain pipe for connecting to drainage system to ensure safe routing of any liquid that may form in the system. Due to the potential of hazardous chemical contamination, proper disposal of liquids is required (by customer). Note: A minimum of 1" of water must be placed in trap prior to start-up to create proper lock of system pressure. Drain should periodically be cleaned out for proper operation. Figure 6. Damper and Actuator Assembly WEATHER HOOD MODULAR MIXING PLENUM BOX OPPOSED BLADE BYPASS DAMPER ACCESS DOOR Figure 5. Drain MODULATING ACTUATOR PARALELL BLADE ISOLATION DAMPER 2-POSITION SPRING RETURN ACTUATOR 3/4 NP DRAIN IN PLENUM MIXING BOX AND FAN HOUSING 4 Twin City Fan IM-1080

29 OPERATION CHECKLIST Verify that proper safety precautions have been followed: Electrical power must be locked off Check fan mechanism components: System connections are properly made and tightened. Bearings are properly lubricated. Wheel, drives and fan surfaces are clean and free of debris. Rotate the impeller by hand to verify it has not shifted in transit. Check fan/wheel overlap. (See Figure 7.) Drives on correct shafts (not reversed). Check position of guards to prevent rubbing. Check fan electrical components: Motor is wired for proper supply voltage. Motor was properly sized for power and rotational inertia of rotating assembly. Motor is properly grounded. All leads are properly insulated. Trial bump : Turn on power just long enough to start assembly rotating. Check rotation for agreement with rotation arrow. Does the assembly make any unusual noise? Check drive alignment and tension. Does this meet with drive manufacturer s recommendations? Correct any problems which may have been found. (Follow safety guidelines - shut power off.) Perform checklist again until unit is operating properly. Run unit up to speed. Verify fastener tightness. These may have loosened during shipment or installation. Setscrews attaching wheel hub to shaft. Setscrews in drive sheaves or coupling. Nuts on inlet funnel. Nuts and bolts holding motor. Nuts holding housing frame to base and base to ground. Nuts on accessories including shaft seal, access doors and pie-splits. Bolts in taper-lock bushings. Grease line connections. After one week of operation, check all nuts, bolts and setscrews and tighten if necessary. Figure 7. TFE QFE, QIFE, TVIFE FAN B SIZE A B A MIN. MAX FAN MAINTENANCE Periodically inspect the shaft and wheel for dirt buildup, corrosion, and signs of excess stress or fatigue. Clean the components. If the wheel is removed for any reason, make sure that it is securely attached to the shaft before restarting the fan. All structural components or devices used to support or attach the fan to a structure should be checked at regular intervals. Vibration isolators, bolts, foundations, etc., are all subject to failure from corrosion, erosion, and other causes. Improper mounting can lead to poor operation characteristics or fan fatigue and failure. Check metallic components for corrosion, cracks, or other signs of stress. Concrete should be checked to insure the structural integrity of the foundation. See curb installation section for detail on proper mounting procedures. MOTOR MAINTENANCE The three basic rules of motor maintenance are: 1. Keep the motor clean. 2. Keep the motor dry. 3. Keep the motor properly lubricated. Blow dust off periodically (with low pressure air) to prevent motor from overheating. Some smaller motors are lubricated for life. Lubrication requirements are normally attached to the motor. Use the motor manufacturer s recommendations for relubrication. If this information is not available, the following schedule may be used. Motors less than 10 HP running about eight hours a day in a clean environment should be lubricated once every five years; motors 15 to 40 HP, every three years. For motors in dusty or dirty environments or running 24 hours a day: divide the service interval by 4. Do not over lubricate. BEARING MAINTENANCE Proper lubrication of the fan drive bearings helps assure maximum bearing life. All fans are equipped with decals indicating relubrication intervals for normal operating conditions. However, every installation is different and the frequency of relubrication should be adjusted accordingly. On high moisture applications, the lubrication frequency may need to be doubled or tripled to adequately protect the bearings. Double the relubrication frequency on fans with vertical shafts. Observation of the conditions of the grease expelled from the bearings at the time of relubrication is the best guide as to whether regreasing intervals and amount of grease added should be altered. Greases are made with different bases. There are synthetic base greases, lithium base, sodium base, etc. Avoid mixing greases with different bases. They could be incompatible and result in rapid deterioration or breakdown of the grease. The lubrication sticker identifies a list of acceptable lubricants. All bearings are filled with a lithium-based grease before leaving the factory. When the fans are started, the bearings may discharge excess grease through the seals for a short period of time. Do not replace the initial discharge because leakage will cease when the excess grease has worked out. Sometimes the bearings have a tendency to run hotter during this period. There is no reason for alarm unless it lasts over 48 hours or gets very hot (over 200 F). When relubricating, use a sufficient amount of grease to purge the seals. Rotate bearings by hand during relubrication. Twin City Fan IM

30 DRIVE MAINTENANCE AND INSTALLATION V-belt drives need periodic inspection, retensioning, and occasional belt replacement. When inspecting drives, look for dirt buildup, burrs or obstructions that can cause premature belt or drive replacement. If burrs are found, use fine emery cloth or a stone to remove them. Be careful that dust does not enter the bearings. Check sheaves for wear. Excessive slippage of belts on sheaves can cause wear and vibration. Replace worn sheaves with new ones. Carefully align sheaves to avoid premature sheave failure. Inspect the belts for wear. If fraying or other wear is observed to be mostly on one side of the belts, the drives may be misaligned. Reinstall the drives according to the following instructions: 1. Slip (do not pound) proper sheave onto corresponding shaft. CAUTION: Placing fan sheave on motor can overspeed wheel and cause structural failure. 2. Align sheaves with straightedge extended along sheaves, just making contact in two places on outside perimeters of both sheaves. 3. Tighten sheave bolts (or setscrews if appropriate). Table 1 can be used to determine the amount of torque required. 4. Install a matched set of belts. Adjust the motor position to obtain slack, install, and tighten belts. Using a pry bar will damage belts. 5. Tighten belts to proper belt tension. Ideal tension is just enough so that the belts do not slip under peak load. When using drive tensioning data supplied by V- belt drive manufacturers, new belts can be tensioned to a value 50% greater than for normal operation. This will reduce retensioning requirements after break-in. Recheck sheave alignment after tensioning. 6. After initial installation of belts, recheck belt tension again after a few days. (New belts require a break-in period of operation.) 7. When replacing belts, replace the entire set. After initial replacement and tensioning, recheck belt tension after a few days. (New belts require a break-in period of operation.) Never use belt dressing on any belts. 8. Fans that have motors and drives mounted at the factory are trim balanced prior to shipment. This is not possible on units that are shipped without motors and drives. The addition of drive components in the field can create unbalance forces. Twin City Fan & Blower recommends final balancing of the unit after the drive components are installed. Failure to do so may void the warranty. MOTOR CHANGE-OUT AND JIB CRANE Motor Change-Out Procedure (Direct Drive Fans) Twin City Fan Model TVIFE is available with a portable jib crane option for use in removing the motor. The jib crane mounts directly to a fabricated base that is built into the mixing plenum box. When using a jib crane verify that it is not being used to lift loads that are greater than its design capacity. To remove the motor: Attach the jib crane to the mounting bracket on the mixing plenum box, verify that all attachments are properly tightened and that there are no cracks and no damage on the crane or mounting bracket. Position the jib crane above the windband of the fan and rig the crane cable to the lifting brackets on the windband itself. Wind in cable until all lines are taught. Remove all bolts securing the windband to the fan assembly itself. Lift the windband off of the fan assembly and lower it to the roof top. Warning: be aware of your surroundings as fan components can be heavy. Position the jib crane above the fan housing and again rig the crane cable to the lifting brackets on the fan housing and tighten the cable. Remove all bolts holding the fan housing to mounting bracket on the mixing box or curb cap. Lift the fan housing and lower it to the roof top. Loosen and remove wheel from motor shaft. Loosen and remove bolts holding motor to fan housing and remove motor. Install new motor Attach motor to fan housing, make sure all bolts are sufficiently tightened. Attach wheel to motor shaft and tighten. Using jib crane, lift wheel and housing assembly by mounting brackets back onto mixing box/curb cap. Carefully lower housing assembly onto box. Verify wheel and funnel are overlapping correctly. Bolt housing assembly to mixing plenum box/curb cap. Lift windband by lifting lugs and align with bolt holes on top of fan assembly. Bolt windband to fan assembly. TROUBLESHOOTING GUIDELINES Use current safety practices when investigating fan or system performance problems. General safe practices and performance troubleshooting guidelines can be found in AMCA Publications 410 and 202, respectively. Fan application and field measurement procedures can be found in AMCA Publications 201 and 203. TROUBLESHOOTING PERFORMANCE PROBLEMS The lists below indicate possible areas to check when air or sound values do not match expectations. Most fan problems can be pinpointed to one of these common causes. Air Capacity Problems: 1. Resistance of system not at design rating. If resistance is lower than expected, both airflow and horsepower may be up. If resistance is higher than anticipated, air volume will be down. 2. Fan speed is not at design speed. 3. Air density not at design values. Also check air performance measurement techniques/procedures. 4. Devices for air modulation are closed or plugged. Also check filters. 5. Wheel mounted improperly or is rotating in reverse. 6. Parts of system or fan have been damaged or need cleaning. Noise Problems: 1. Air performance is incorrect and fan is not at design point of operation. Fan forced to operate in an unstable flow region. 2. Bearing failure. Check bearings (lubrication). 3. Supply voltage high or inconsistent supply frequency. Adjustable frequency controllers can generate motor noise. 4. Objects which are installed in a high velocity airstream can generate noise. This includes flow sensors, turning vanes, etc. 5. Poor fan inlet conditions. 6. Acoustics or sound measurement procedure incorrect. 6 Twin City Fan IM-1080

31 Vibration Problems: 1. Misalignment of drive components. 2. Poor foundations or mounting structure (resonances). 3. Foreign material attached to rotating components. 4. Damaged rotating components (bearings, shaft, fan, wheel, sheaves). 5. Broken, loose or missing setscrews. 6. Loose bolts. 7. Vibration transmitted by another source. 8. Water accumulating in airfoil blades. 9. Fan is operating in stall or unstable flow region. NOTE: All fans manufactured by Twin City Fan & Blower are factory balanced prior to shipment. Handling and movement of the fan during shipment may cause the rotating assembly to shift. Balance should be checked once the fan is installed. If a final trim balance is required, it is the end user s responsibility to bring the fan back to factory specifications. Final trim balancing is not the responsibility of Twin City Fan & Blower. Refer to Figure 8 for vibration guidelines. Motor Problems: 1. Incorrect wiring. 2. Speed of fan too high. 3. Parts improperly installed - binding. 4. Bearings improperly lubricated. 5. WR2 capability of motor too low for application. 6. Protection devices may be improperly sized. Figure 8. Vibration Guidelines, unfiltered Condition Fan Application Category Drive Problems: 1. Belts improperly tensioned. 2. Drive alignment is poor. Rigidly Mounted mm/s (in./s) Flexibly Mounted mm/s (in./s) BV (0.25) 8.8 (0.35) Start-up BV (0.16) 6.4 (0.25) BV (0.40) 16.5 (0.65) Alarm BV (0.25) 10.2 (0.40) BV (0.50) 17.8 (0.70) Shutdown BV (0.40) 15.2 (0.60) Value shown are peak velocity, mm/s (inches/s), Filter out. Table taken from ANSI/AMCA Standard , Table 6.3. AMCA defines BV-3 for applications up to 400 HP; BV-4 for applications over 400 HP. Bearing Problems: Generally speaking, Twin City Fan & Blower uses three types of bearings: 1. Ball bearing with set screw lock. 2. Spherical roller bearings with set screw lock. 3. Spherical roller bearings with adapter lock/taper lock feature to attach them to the shaft. Ball bearings These are self-aligning bearings and should present no alignment problems with one exception: i.e., on Sealmaster bearings there is a pin beneath the grease fitting which prevents the bearings outer race from rotating. Should this pin jam, the bearing loses its alignment feature. Common failure causes are (1) set screws loosening and shaft turning within the bearing, and (2) crowned bearing supports. Loosen one bolt and measure the clearance between the pillow block and the support. Add shim to compensate. Common failure causes are the same as with ball bearings, mainly set screws loosening and crowned bearing supports. Spherical Roller Bearings with Adapter Lock Again, the self-aligning feature is inherent in the spherical design. Good alignment results in a cooler operating bearing. The faster the bearing operates the more critical this becomes. A common cause of failure is improper installation practice. Removing too much clearance from the bearing can result in preloading the bearing, resulting in premature failure; and removing not enough can result in the shaft rotating within the bearing. Properly tightened, this method of attaching a bearing to a shaft is second only to a press fit. Crowned bearing supports can also preload these bearings and should be checked by loosening one side of the bearing and checking for clearance. Lubrication The major cause of bearing failure is contamination of grease, insufficient grease, or incompatibility of grease. If a fan is to be stored for any length of time at the job site, the bearings immediately should be filled with grease while rotating the shaft and then the bearings should be regreased and rotated monthly. This will prevent moisture, which condenses within the bearing, from corroding the raceways. Most greases used on fan pillow blocks are lithium base. Use the greases shown on the bearing decal. Do not mix the bases without completely purging out the initial grease. Initially, follow the lubrication instruction on the side of the fan. The frequency of lubrication should be adjusted depending on the condition of the old grease being purged. This is the responsibility of the user. If the grease is dirty, the lubrication frequency should be more often. a. Noise If a bearing is increasing in noise intensity and/or vibration, it will probably result in failure. b. Temperature If a bearing temperature begins to gradually rise, it will generally result in failure. A bearing can operate up to 200 degrees and operate satisfactorily if the temperature remains constant and the bearing receives adequate lubrication. Remember that a roller bearing under the same load and speed will be somewhat more noisy and run warmer than a ball bearing. This is normal. Rough handling and/or dropping a fan can result in brinelling the bearing. This appears as a clicking noise at first, then gradually worsens until failure. When replacing a bearing, always align the bearings first, then bolt the pillow blocks to their support, rotate the shaft, fasten the bearings to it. If the bearing is fastened to the shaft first, tightening the pillow block bolts may bind the shaft and preload the bearings. Spherical Roller Bearings with Set Screw Lock The selfaligning characteristic of these bearings are inherent in the spherical roller design. The closer that these bearings are to perfect alignment, the cooler they will operate. Twin City Fan IM

32 Figure 9. Safety & Lubrication Instructions for Fans with Ball Bearings WARNING 1. This equipment must not be operated without proper guarding of all moving parts. While performing maintenance be sure remote power switches are locked off. See installation manual for recommended safety practices. 2. Before starting: Check all setscrews for tightness and rotate wheel by hand to make sure it has not moved in transit. Shaft DIA 1 2 " thru " (13 45) " thru " (50 60) " thru " (65 75) " thru " (80 100) Relubrication Schedule (Months)* Ball Bearing Pillow Blocks Speed (RPM) * Suggested lubrication interval under ideal continuous operating conditions. Relubricate while running, if safety permits, until some purging occurs at seals. Adjust lubrication frequency depending on conditions of purged grease. Use one-half of listed interval for vertical shaft applications or for 24 hour operation. Hours of operation, temperature, and surrounding conditions will affect the relubrication frequency required. 1. Lubricate with a high quality NLGI No. 2 lithium-base grease having rust inhibitors and antioxidant additives, and a minimum oil viscosity of 500 SUS at 100 F (38 C). Some greases having these properties are: Shell - Gadus S2 V100 2 Exxon - Ronex MP Mobil - Mobilith SHC100 Mobil - Mobilith SHC Lubricate bearings prior to extended shutdown or storage and rotate shaft monthly to aid corrosion protection. Figure 10. Safety & Lubrication Instructions for Fans with Unit Roller Bearings WARNING 1. This equipment must not be operated without proper guarding of all moving parts. While performing maintenance be sure remote power switches are locked off. See installation manual for recommended safety practices. 2. Before starting: Check all setscrews for tightness and rotate wheel by hand to make sure it has not moved in transit. Relubrication Schedule (Months)* Spherical Roller Bearing - Solid Pillow Blocks Shaft DIA Speed (RPM) " thru " (25 35) " thru " (40 55) " thru " (60 85) " thru " (90 125) Figure 11. Safety & Lubrication Instructions for Fans with Spherical Roller Bearings with Split Pillow Block Housings WARNING 1. This equipment must not be operated without proper guarding of all moving parts. While performing maintenance be sure remote power switches are locked off. See installation manual for recommended safety practices. 2. Before starting: Check all setscrews for tightness, and rotate wheel by hand to make sure it has not moved in transit. Relubrication Schedule (Months)* Spherical Roller Bearing - Split Pillow Blocks Speed (RPM) Shaft DIA " thru " (35 50) " thru " (55 70) " thru " (75 100) " thru " ( ) " thru " ( ) *Suggested lubrication interval under ideal continuous operating conditions. Remove bearing cap and observe condition of used grease after lubricating. Adjust lubrication frequency as needed. Use one-half of listed interval for vertical shaft applications or for 24 hour operation. Hours of operation, temperature, and surrounding conditions will affect the relubrication frequency required. Clean and repack bearings annually. Remove old grease, pack bearing full and fill housing reservoir on b o t h s i d e s o f b e ar i n g s t o b o t t o m o f shaft. 1. Lubricate with a high quality NLGI No. 2 lithium-base grease having rust inhibitors and antioxidant additives, and a minimum oil viscosity of 500 SUS at 100 F (38 C). Some greases having these properties are: Shell - Gadus S2 V100 2 Exxon - Ronex MP Mobil - Mobilith SHC100 Mobil - Mobilith SHC Lubricate bearings prior to extended shutdown or storage and rotate shaft monthly to aid corrosion protection. 3. Purge or remove old grease when changing lubrication brands or types. Static Oil Lubrication 1. Use only high quality mineral oil with a VG grade indicated on the customer submittal drawing. 2. Static oil level should be at the center of the lower-most roller (Do not overfill.) 3. Complete lubrication change should be made annually. Grease to be added at each interval oz oz oz oz oz *Suggested lubrication interval under ideal continuous operating conditions. Relubricate while running, if safety permits, until some purging occurs at seals. Adjust lubrication frequency depending on conditions of purged grease. Use one-half of listed interval for vertical shaft applications or for 24 hour operation. Hours of operation, temperature, and surrounding conditions will affect the relubrication frequency required. 1. Lubricate with a high quality NLGI No. 2 lithium-base grease having rust inhibitors and antioxidant additives, and a minimum oil viscosity of 500 SUS at 100 F (38 C). Some greases having these properties are: Shell - Gadus S2 V100 2 Exxon - Ronex MP Mobil - Mobilith SHC100 Mobil - Mobilith SHC Lubricate bearings prior to extended shutdown or storage and rotate shaft monthly to aid corrosion protection. TWIN CITY FAN & BLOWER Trenton Lane N Minneapolis, MN Phone: Fax:

33 CEILING EXHAUST FAN READ AND SAVE THESE INSTRUCTIONS WARNING TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING: 1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed in the warranty. 2. Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel. 3. Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction codes and standards. 4. Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel-burning equipment to prevent backdrafting. Follow the heating equipment manufacturer's guideline and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authorities. MODEL T050 WARNING 5. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities. 6. Ducted fans must always be vented to the outdoors. 7. This unit may be used over a tub or shower enclosure when installed in a GFCI protected branch circuit. 8. If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application. 9. Never place a switch where it can be reached from a tub or shower. 10. This unit must be grounded. CAUTION INSTALLATION 1. For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors. 2. To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc. off power unit. 3. Please read specification label on product for further information and requirements. RECEPTACLE SWITCH BOX HOUSING SCREWDRIVER SLOT GROUND WIRECLIP DETAIL LINE IN 1. Remove motor plate from housing by pushing down on rib in plate while pulling out on side of housing. Motor plate may also be removed by inserting a straight-blade screwdriver into slot in housing and twisting screwdriver. WIRING COVER 3. Turn off electrical power at service entrance and connect power cable to housing using appropriate connector. Wire black to black, white to white. Insert ground wire into grounding clip and secure to emboss in housing. Push all wiring up into corner of unit and replace wiring cover. Make sure cover holds housing flap in place against side or top of housing. CAUTION: DO NOT ALLOW WIRES TO EXTEND OUTSIDE OF WIRING BOX. Wire left exposed will become pinched or cut when motor plate is installed. Electrical shock may result. 4. Choose the location for your fan. For best performance, use the shortest possible duct run and a minimum number of elbows. For wall installations: Position unit so damper flap closes when unit is off. HOUSING FLAP 2. Remove wiring cover from housing by pulling straight out. Unit is shipped ready to wire through the top of housing. To wire through the side, bend housing flap to cover top hole and expose side hole. DO NOT BREAK OFF FLAP. If flap breaks, plug unused hole using standard electrical hole plug. 5. Use embossed measuring guides on side of housing to position housing for proper wall or ceiling thickness. MAKE SURE HOUS- ING WILL BE FLUSH WITH FINISHED CEILING OR WALL. Nail housing or stude joist using four nails to ensure a solid, quiet installaltion.

34 6. Install 3" round duct onto damper/duct connector. If rigid ductwork is used, its seam should be positioned at top of damper/duct connector. Tape the joint and extend ducting to a wall cap or roof cap. Make sure the damper operates freely. Ceiling or wall can now be finished. 7. Replace the motor plate removed in Step 1. Insert two motor plate tabs into slots in housing and then pivot motor plate up until third tab on plate snaps into matching slot in housing. Make sure tabs hold motor plate securely in place. Plug in motor. 8. Squeeze grille springs together and insert springs into slots in motor plate. Push grille up against ceiling or wall. 7 SERVICE PARTS KEY NO. PART NO. DESCRIPTION Grille Only Grille Springs (2 Required) Grille Assembly (Includes Key Nos. 1 & 2) Motor (T050) Motor Plate Blower Wheel Nut #6-32 (2 Required) Damper/Duct Connector Receptacle Wiring Cover Ground Clip Housing Assembly Order replacement parts by part number - not key number. Limitation of Warranties and Claims Seller warrants to the original purchaser that the goods sold hereunder shall be free from defects in workmanship and material under normal use and service (except in those cases where the materials are supplied by the buyer) for a period of one year from the date of original installation or eighteen (18) months from the date of shipment, whichever occurs first. The liability of seller under this warranty is limited to replacing, repairing, or issuing credit (at cost, F.O.B. factory and at seller s discretion) for any part or parts which are returned by buyer during such period provided that: a. seller is notified in writing within ten (10) days following discovery of such defects by buyer, or within ten (10) days after such defects should reasonably have been discovered, whichever is less; b. the defective unit is returned to seller, transportation charges prepaid by buyer. c. payment in full has been received by seller or said products; and d. seller s examination of such unit shall disclose to its satisfaction that such defects have not been caused by misuse, neglec t, improper installation, repair, alteration, act of God, or accident. No warranty made hereunder shall extend to any seller product whose serial number is altered, faced ef or removed. Seller makes no warranty, express or implied, with respect to motors, switches, controls, or other components of seller s product, where such components are warranted separately by their respective manufacturers. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. In no event shall seller be liable to buyer for indirect, incidental collateral, or consequential damages of any kind. (BUYER S FAILURE TO PAY THE FULL AMOUNT DUE WITHIN SIXTY (60) DAYS OF DATE OF INVOICE SHALL OPERATE TO RELEASE SELLER FROM ANY AND ALL LIABILITY OR OBLIGATION ARISING PURSUANT TO ANY WARRANTY, EXPRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, MADE IN CONNECTION WITH ANY CONTRACT FORMED HEREUN- DER. BUYER AGREES THAT SUCH FAILURE TO PAY SHALL CONSTITUTE A VOLUNTARY WAIVER OF ANY AND ALL SUCH WARRANTIES ARISING PURSUANT TO SUCH CONTACT.) TWIN CITY FAN & BLOWER, 5959 Trenton Lane, Minneapolis, MN B

35 MODEL T080 CEILING VENTILATOR Page 1 READ AND SAVE THESE INSTRUCTIONS WARNING TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR IN- JURY TO PERSONS, OBSERVE THE FOLLOWING: 1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed in the warranty. 2. Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel. 3. Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction codes and standards. 4. Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment to prevent backdrafting. Follow the heating equipment manufacturer s guideline and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authorities. 5. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities. TYPICAL INSTALLATIONS WARNING 6. Ducted fans must always be vented to the outdoors. 7. If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application and be connected to a GFCI (Ground Fault Circuit Interrupter) - protected branch circuit. 8. Never place a switch where it can be reached from a tub or shower. 9. This unit must be grounded. CAUTION! 1. For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors. 2. To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc. off power unit. 3. Please read specification label on product for further information and requirements. TYPICAL INSTALLATIONS POWER CABLE POWER CABLE 4" ROUND DUCT CEILING JOIST MOUNTING TABS HOUSING MOUNTING TABS HOUSING CEILING MATERIAL GRILLE CEILING MATERIAL GRILLE ADDITIONAL FRAMING CEILING JOIST 16 -ON-CENTER CEILING JOISTS Housing mounted directly to joist. 24 -ON-CENTER CEILING JOISTS Housing mounted to additional framing. Installer: Leave this manual with the homeowner. Homeowner: Use and Care information on page 4.

36 MODEL T080 TYPICAL INSTALLATIONS (continued) INSTALL THE HOUSING (continued) New Construction Page 2 4" ROUND DUCT POWER CABLE HOUSING MOUNTING TAB SUSPENDED CEILING MATERIAL GRILLE SUSPENDED CEILINGS Housing hung with wires - 3-point mount. 3. Set housing aside and drive nails partially into joist at the top of both keyhole marks. INSTALL THE HOUSING New Construction 1. Choose the location for your fan in the ceiling. For best possible performance, use the shortest possible duct run and a minimum number of elbows. TAB HOLES 4. Hang housing from nails and pound nails tight. To ensure a noisefree mount, pound another nail through the top hole of each mounting tab. 1-1/4 1 5/8 BOTTOM EDGE OF JOIST 2. Position mounting brackets against joist so that bottom edge of housing will be flush with finished ceiling. Additional positioning feature for 5/8, 1, & 1-1/4 thick ceiling material: Holes in corners of housing are labeled with various ceiling material thicknesses. Position housing so bottom edge of joist is visible through a matched set of holes. The housing is now in the proper position for that ceiling material thickness. Additional positioning feature for 1/2 thick ceiling material: Bend two tabs, on side of housing, 90 0 outward. Lift housing until tabs contact underside of joist. Mark the keyhole slot on both mounting brackets. Existing Construction 1. Choose the location for your fan in the ceiling. For best possible performance, use the shortest possible duct run and a minimum number of elbows. 2. In attic, position mounting brackets against joist. Trace outline of housing on ceiling material. 3. Set housing aside and cut ceiling opening slightly larger than marked.

37 MODEL T080 INSTALL THE HOUSING (continued) CONNECT THE WIRING SCHEMATIC WIRING DIAGRAM Page 3 Existing Construction O N / OFF S WITC H B L K B L K M W H T LIN E I N B L K W H T G R D W H T G R D S WITCH B O X UNI T BLACK ON / OFF SWITCH (purchase separately) SWITCH BOX WHITE GROUND (bare) RECEPTACLE 4. Place housing in opening so that its bottom edge is flush with finished ceiling. Nail to joist through keyhole on both sides. To ensure a noise-free installation, drive another nail through the top hole of each mounting bracket. WIRING PLATE ADDITIONAL MOUNTING HOLES 5. Additional mounting holes are provided for installations where access from above is inconvenient or not possible. Nail or screw housing directly to joists or framing. 120 VAC LINE IN 1. Wire unit following diagram above. Run electrical cable as direct as possible to unit. Do not allow cable to touch sides or top of unit after installation is complete. ATTACH THE GRILLE INSTALL THE DUCTWORK FLUSH OPTIONAL TABS SLOT IN MOTOR PLATE SPRING TABS 1. Squeeze grille springs together and insert springs into slots in motor plate. NOTE: If desired, rotate grille 90 o and move springs to optional tabs. 1. Snap the damper/duct connector onto housing. Make sure that tabs on the connector lock into slots in housing. Top of damper/ duct connector should be flush with top of housing. 2. Connect 4 round duct to damper/duct connector and extend duct to outside through a roof or wall cap. Check damper to make sure that it opens freely. Tape all duct connections to make them secure and air tight. GRILLE SPRING 2. Push grille up against ceiling.

38 MODEL T080 USE AND CARE WARRANTY Page 4 WARNING: DISCONNECT ELECTRICAL POWER SUPPLY AND LOCK OUT SERVICE PANEL BEFORE CLEANING OR SERVIC- ING THIS UNIT. The motor is permanently lubricated. Do not oil or disassemble motor. TO CLEAN GRILLE: CAUTION: Plastic parts can be cleaned with mild, soapy water (use a mild detergent, such as dishwashing liquid) and dried with a soft cloth. Do not use abrasive cloth, steel wool pads, or scouring powders. TO CLEAN FAN ASSEMBLY: Unplug fan assembly. To remove motor plate: Find the single tab on the motor plate (located next to the receptacle). Push up near motor plate tab while pushing out on side of housing. Or insert a straightblade screwdriver into slot in housing (next to tab) and twist screwdriver. Gently vacuum fan, motor and interior of housing. METAL AND ELECTRICAL PARTS SHOULD NEVER BE IM- MERSED IN WATER. SERVICE PARTS KEY PART NO. DESCRIPTION Grille Motor Plate Motor (T080) Impeller Motor Nut (2 req.) * Blower Assembly (includes Key Nos. 2 thru 5) (T080) Receptacle Wire Panel * Wire Panel Assembly (includes Key Nos. 6 & 7) Housing Damper/Duct Connector Wiring Plate Screw, #8-18 x Ground Screw * Not shown assembled. Order replacement parts by PART NO. - not by KEY NO. 2 6 Limitation of Warranties and Claims Seller warrants to the original purchaser that the goods sold hereunder shall be free from defects in workmanship and material under normal use and service (except in those cases where the materials are supplied by the buyer) for a period of one year from the date of original installation or eighteen (18) months from the date of shipment, whichever occurs first. The liability of seller under this warranty is limited to replacing, repairing, or issuing credit (at cost, F.O.B. factory and at seller s discretion) for any part or parts which are returned by buyer during such period provided that: a. seller is notified in writing within ten (10) days following discovery of such defects by buyer, or within ten (10) days after such defects should reasonably have been discovered, whichever is less; b. the defective unit is returned to seller, transportation charges prepaid by buyer. c. payment in full has been received by seller or said products; and d. seller s examination of such unit shall disclose to its satisfaction that such defects have not been caused by misuse, neglect, improper installation, repair, alteration, act of God, or accident. No warranty made hereunder shall extend to any seller product whose serial number is altered, effaced or removed. Seller makes no warranty, express or implied, with respect to motors, switches, controls, or other components of seller s product, where such components are warranted separately by their respective manufacturers. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WAR- RANTIES, EXPRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. In no event shall seller be liable to buyer for indirect, incidental collateral, or consequential damages of any kind. (BUYER S FAILURE TO PAY THE FULL AMOUNT DUE WITHIN SIXTY (60) DAYS OF DATE OF INVOICE SHALL OPERATE TO RELEASE SELLER FROM ANY AND ALL LIABILITY OR OBLIGATION ARISING PURSUANT TO ANY WARRANTY, EX- PRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PAR- TICULAR PURPOSE, MADE IN CONNECTION WITH ANY CONTRACT FORMED HEREUNDER. BUYER AGREES THAT SUCH FAILURE TO PAY SHALL CON- STITUTE A VOLUNTARY WAIVER OF ANY AND ALL SUCH WARRANTIES ARIS- ING PURSUANT TO SUCH CONTACT.) TWIN CITY FAN & BLOWER, 5959 Trenton Lane, Minneapolis, MN B

39 MODELS T100 T150 T200 T250 T300 CEILING / WALL-MOUNT VENTILATORS 120V Page 1 READ AND SAVE THESE INSTRUCTIONS WARNING TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR IN- JURY TO PERSONS, OBSERVE THE FOLLOWING: 1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed in the warranty. 2. Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel. 3. Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction codes and standards. 4. Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment to prevent backdrafting. Follow the heating equipment manufacturer s guideline and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authorities. 5. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities. 6. Ducted fans must always be vented to the outdoors. 7. To reduce the risk of fire, use only metal ductwork. 8. If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application and be connected to a GFCI (Ground Fault Interrupter) - protected branch circuit. 9. Never place a switch where it can be reached from a tub or shower. 10. This unit must be grounded. CAUTION! 1. For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors. 2. To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc. off power unit. 3. Please read specification label on product for further information and requirements. TABLE OF CONTENTS This manual is divided into sections as follows: TYPICAL INSTALLATION This section shows a common installation in new and existing, frame construction. - Mounting (new construction) - Mounting (existing construction) - Wiring - Ducting (horizontal blower discharge) MOUNTING OPTIONS WIRING OPTIONS -Wiring Plate Position DUCTING OPTIONS - Blower Discharge Positions - Ducting (vertical blower discharge) USE AND CARE SERVICE PARTS WARRANTY Installer: Leave this manual with the homeowner. Homeowner: Use and Care information on page 3.

40 MODELS T100 T150 T200 T250 T300 TYPICAL INSTALLATION MOUNTING (New Frame Construction) TYPICAL INSTALLATION WIRING ADDITIONAL 1½ FRAMING ROUND DUCT* Mounting brackets factory-shipped in position for ½ ceiling material. CEILING JOIST (16 centers shown) BLACK TO BLACK TOP / BACK OF HOUSING GROUND TO WIRING PLATE WIRING PLATE Blower factory-shipped in horizontal discharge position. GRILLE (Install after ceiling is finished.) MOUNTING SCREW GRILLE SCREW WHITE TO WHITE 120 VAC LINE IN Ventilator can be wired from outside of housing. Use UL approved connectors to wire per local codes. DUCTING (Horizontal blower discharge) Factory-shipped unit installed in new construction. ROOF CAP MOUNTING (Existing Frame Construction) 2 X 4 FRAMING (wide side down) CEILING JOIST (16 centers shown) ROUND DUCT* ROUND DUCT* ROUND ELBOW* WALL CAP MOUNTING BRACKETS (Attached to opposite sides of housing & upside-down, so housing is flush with finished ceiling) GRILLE (Polymeric shown) Factory-shipped unit installed in existing construction. * T100 & T150 use 6 round duct. T200, T250 & T300 use 8 round duct. FINISHED CEILING MATERIAL GRILLE SCREW Two ways to connect ductwork to a factory-shipped unit. * T100 & T150 use 6 round duct. T200, T250 & T300 use 8 round duct. IMPORTANT: Remove shipping tape from damper Remove the shipping tape from the damper flap and make sure that damper flap opens and closes freely inside the ductwork. Use duct tape to make ductwork connections secure and air-tight. Remove shipping ring from blower inlet Remove the shipping ring from the blower inlet before operating the ventilator.

41 MODELS T100 T150 T200 T250 T300 MOUNTING OPTIONS ¼-20 hex nuts secure mounting brackets to housing. Loosen and re-tighten or remove and replace nuts as necessary for desired mounting bracket position. DUCTING OPTIONS BLOWER DISCHARGE POSITIONS DUCT CONNECTOR DUCT CONNECTOR Page / 8" MAX. 1½" to 2½" 12¼" Mounting Brackets in factory-shipped position. (Outlet parallel to joists.) (New construction) 12¼" Mounting Brackets flipped over and mounted to outlet sides of housing. (Outlet parallel to joists.) (Existing construction) Change blower & duct connector positions for vertical discharge. 12¼" Mounting Brackets mounted to outlet sides of housing. (Outlet perpendicular to joists.) (New construction) 12¼" Mounting Brackets flipped over to give approx. 1 more clearance. (Outlet parallel to joists.) (New construction) 1 1 / 2" to 2 1 / 2" BLOWER Blower and duct connector in horizontal discharge position. (Factory shipped) DUCTING ROUND DUCT* BLOWER Blower and duct connecter in vertical discharge position. (Vertical blower discharge) ROOF CAP 9 1 / 2" to 10 1 / 2" 10 3 / 4" to 11 3 / 4" 12¼" Mounting Brackets mounted to top sides of housing. (Outlet parallel to joists.) (New or existing construction) WIRING OPTIONS WIRING PLATE POSITION 12¼" Mounting Brackets flipped over and mounted to top of sides of housing. (Outlet parallel to joists.) (New or existing construction) VERTICAL POWER CABLE CONNECTION HORIZONTAL POWER CABLE CONNECTION Wiring plate mounts to side or top of housing. * T100 & T150 use 6 round duct. T200, T250 & T300 use 8 round duct. Typical ductwork connection to a ventilator converted to vertical discharge. USE AND CARE Ventilator is designed for continuous operation. If desired, it may be controlled using an on/off switch or a solid-state, variable speed control. Follow wiring instructions packed with control, and adhere to all local and state codes, and the National Electrical Code. WARNING: To reduce the risk of electric shock, disconnect from power supply before servicing. To clean grille: Use appropriate vacuum attachment or remove grille and clean with a soft cloth and mild soap or detergent. Dry grille thoroughly before reinstalling. To clean blower assembly: Remove grille, unplug blower from housing, remove blower mounting nuts, and carefully remove blower from housing. Use appropriate vacuum attachment or a soft cloth and mild soap or detergent to clean blower discharge area and wheel. DO NOT ALLOW WATER TO ENTER MOTOR. Make sure blower assembly is completely dry before reinstalling. Motor is permanently lubricated. Do not oil or disassemble motor.

42 MODELS T100 T150 T200 T250 T300 SERVICE PARTS SERVICE PARTS Page 4 KEY NO. PART NO. DESCRIPTION Housing Assembly (T100 & T150) Housing Assembly (T200, T250, & T300) Mounting Bracket (2 req.) Damper Assembly (6 dia.) Damper Assembly (8 dia.) Screw, 8-18 x ¼ (12 req.)* Wire Box Cover Strain Relief Bushing Wiring Plate Ground Screw, x ½ (2 req.) Scroll Assembly (T100 & T150) Scroll Assembly (T200, T250, & T300) Inlet Ring Blower Wheel Motor (T100) Motor (T150) Motor (T200) Motor (T250) Motor (T300) Lock Nut, 8-32 (4 req.)* Washer (4 req.)* Grommet (4 req.) Blower Assembly, Complete (Includes Key Nos. 4 & 9-15) (T100) (T150) (T200) (T250) (T300) Nut, ¼-20 (6 req.)* Wire Harness Wrapper Insulation Side Insulation (2 req.) Insulation Mounting Clip Grille Grille Nut (2 req.) Grille Mounting Screw (2 req.) Screw, x 7/8 (4 req.)* Order replacement parts by PART NO. - not by KEY NO. * Standard hardware - may be purchased locally BLOWER ASSEMBLY 4 WARRANTY 24 Limitation of Warranties and Claims Seller warrants to the original purchaser that the goods sold hereunder shall be free from defects in workmanship and material under normal use and service (except in those cases where the materials are supplied by the buyer) for a period of one year from the date of original installation or eighteen (18) months from the date of shipment, whichever occurs first. The liability of seller under this warranty is limited to replacing, repairing, or issuing credit (at cost, F.O.B. factory and at seller s discretion) for any part or parts which are returned by buyer during such period provided that: a. seller is notified in writing within ten (10) days following discovery of such defects by buyer, or within ten (10) days after such defects should reasonably have been discovered, whichever is less; b. the defective unit is returned to seller, transportation charges prepaid by buyer. c. payment in full has been received by seller or said products; and d. seller s examination of such unit shall disclose to its satisfaction that such defects have not been caused by misuse, neglect, improper installation, repair, alteration, act of God, or accident. No warranty made hereunder shall extend to any seller product whose serial number is altered, effaced or removed. Seller makes no warranty, express or implied, with respect to motors, switches, controls, or other components of seller s product, where such components are warranted separately by their respective manufacturers. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. In no event shall seller be liable to buyer for indirect, incidental collateral, or consequential damages of any kind. (BUYER S FAILURE TO PAY THE FULL AMOUNT DUE WITHIN SIXTY (60) DAYS OF DATE OF INVOICE SHALL OPERATE TO RELEASE SELLER FROM ANY AND ALL LIABILITY OR OBLIGATION ARISING PURSUANT TO ANY WARRANTY, EXPRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, MADE IN CONNECTION WITH ANY CONTRACT FORMED HEREUN- DER. BUYER AGREES THAT SUCH FAILURE TO PAY SHALL CONSTITUTE A VOLUNTARY WAIVER OF ANY AND ALL SUCH WARRANTIES ARISING PURSUANT TO SUCH CONTACT.) TWIN CITY FAN & BLOWER, 5959 Trenton Lane, Minneapolis, MN A

43 MODELS T400 T500 T700 CEILING / WALL-MOUNT VENTILATORS 120V Page 1 READ AND SAVE THESE INSTRUCTIONS WARNING TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR IN- JURY TO PERSONS, OBSERVE THE FOLLOWING: 1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed in the warranty. 2. Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel. 3. Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction codes and standards. 4. Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment to prevent backdrafting. Follow the heating equipment manufacturer s guideline and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authorities. 5. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities. 6. Ducted fans must always be vented to the outdoors. 7. To reduce the risk of fire, use only metal ductwork. 8. If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application and be connected to a GFCI (Ground Fault Interrupter) - protected branch circuit. 9. Never place a switch where it can be reached from a tub or shower. 10. This unit must be grounded. CAUTION! 1. For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors. 2. To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc. off power unit. 3. Please read specification label on product for further information and requirements. TABLE OF CONTENTS This manual is divided into sections as follows: TYPICAL INSTALLATION This section shows a common installation in new and existing, frame construction. - Mounting (new construction) - Mounting (existing construction) - Wiring - Ducting (horizontal blower discharge) MOUNTING OPTIONS WIRING OPTIONS -Wiring Plate Position DUCTING OPTIONS - Blower Discharge Positions - Ducting (vertical blower discharge) USE AND CARE SERVICE PARTS WARRANTY Installer: Leave this manual with the homeowner. Homeowner: Use and Care information on page 3.

44 MODELS T400 T500 T700 TYPICAL INSTALLATION MOUNTING (New Frame Construction) TYPICAL INSTALLATION WIRING Page 2 10 ROUND DUCT Mounting brackets factory-shipped in position for ½ ceiling material. BLACK TO BLACK TOP / BACK OF HOUSING GROUND TO WIRING PLATE WIRING PLATE 4½ X 18½ TO 10 ROUND TRANSITION Blower factory-shipped in horizontal discharge position. GRILLE Install after ceiling is finished. MOUNTING SCREW GRILLE SCREW CEILING JOIST (24 centers shown) Factory-shipped unit installed in new construction. MOUNTING (Existing Frame Construction) WHITE TO WHITE 120 VAC LINE IN Ventilator can be wired from outside of housing. Use UL approved connectors to wire per local codes. DUCTING (Horizontal blower discharge) ROOF CAP 4½ X 18½ TO 10 ROUND TRANSITION 10 ROUND DUCT 2 X 4 FRAMING (wide side down) CEILING JOIST (24 centers shown) 4½ X 18½ TO 10 ROUND TRANSITION 10 ROUND DUCT MOUNTING SCREW 10 ROUND ELBOW WALL CAP MOUNTING BRACKETS (Attached to opposite sides of housing & upside-down, so housing is flush with finished ceiling) GRILLE FINSHED CEILING MATERIAL GRILLE SCREW Two ways to connect ductwork to a factory-shipped unit. NOTE: Make sure the shipping tape is removed from the damper flap and that damper flap opens and closes freely inside the ductwork. Use duct tape to make ductwork connections secure and air-tight. Factory-shipped unit installed in existing construction.

45 MODELS T400 T500 T700 MOUNTING OPTIONS ¼-20 hex nuts secure mounting brackets to housing. Loosen and re-tighten or remove and replace nuts as necessary for desired mounting bracket position. DUCTING OPTIONS BLOWER DISCHARGE POSITIONS Page 3 DUCT CONNECTOR DUCT CONNECTOR 1 1 / 8" MAX. 1½" to 2½" 21½" Mounting brackets in factory-shipped position. (Outlet parallel to joists.) (New construction) 21½" Mounting brackets flipped over and mounted to outlet sides of housing. (Outlet parallel to joists.) (Existing construction) Change blower & duct connector positions for vertical discharge. 12¼" Mounting brackets mounted to outlet sides of housing. (Outlet perpendicular to joists.) (New construction) 9 1 / 2" to 10 1 / 2" 21½" 1 1 / 2" to 2 1 / 2" Mounting brackets flipped over to give approx. 1 more clearance. (Outlet parallel to joists.) (New construction) 10 3 / 4" to 11 3 / 4" BLOWER Blower and duct Blower and duct connector in horizontal connector in vertical discharge position discharge position. (factory shipped). DUCTING (Vertical blower discharge) 10 ROUND DUCT ROOF CAP BLOWER 4½ X 18½ TO 10 ROUND TRANSITION 21½" Mounting brackets mounted to top sides of housing. (Outlet parallel to joists.) (New or existing construction) WIRING OPTIONS WIRING PLATE POSITION HORIZONTAL POWER CABLE CONNECTION 21½" Mounting brackets flipped over and mounted to top of sides of housing. (Outlet parallel to joists.) (New or existing construction) Wiring plate mounts to side or top of housing. VERTICAL POWER CABLE CONNECTION Typical ductwork connection to a ventilator converted to vertical discharge. USE AND CARE Ventilator is designed for continuous operation. If desired, it may be controlled using an on/off switch or a solid-state, variable speed control. Follow wiring instructions packed with control, and adhere to all local and state codes, and the National Electrical Code. WARNING: To reduce the risk of electric shock, disconnect from power supply before servicing. To clean grille: Use appropriate vacuum attachment or remove grille and clean with a soft cloth and mild soap or detergent. Dry grille thoroughly before reinstalling. To clean blower assembly: Remove grille, unplug blower from housing, remove blower mounting nuts, and carefully remove blower from housing. Use appropriate vacuum attachment or a soft cloth and mild soap or detergent to clean blower discharge area and wheel. DO NOT ALLOW WATER TO ENTER MOTOR. Make sure blower assembly is completely dry before reinstalling. Motor is permanently lubricated. Do not oil or disassemble motor.

46 MODELS T400 T500 T700 SERVICE PARTS KEY NO. PART NO. DESCRIPTION Housing Assembly Mounting Bracket (2 req.) Duct Connector Damper Flap Assembly (2 req.) Screw, 8-18 x ¼ (18 req.)* Wiring Plate Ground Screw, x ½ (2 req.) Wire Box Cover Strain Relief Bushing Wire Harness Wrapper Insulation Side Insulation (2 req.) Insulation Mounting Clip (6 req.) Nut, ¼-20 (12 req.)* Scroll Assembly (2 req.) Blower Wheel (2 req.) Inlet Ring (2 req.) Motor (T400) Motor (T500) Motor (T700) Motor Mounting Bracket Rubber Isolator (4 req.) Screw, x 7/8 (4 req.)* Washer (4 req.)* Nut, Hex (4 req.)* Washer (4 req.)* Nut, Hex Flange 3/ Scroll Mounting Channel Blower Assembly, Complete (Includes Key Nos. 5 & 14-26) (T400) (T500) (T700) Grille Grille Nut (4 req.) Grille Mounting Screw (4 req.) Screw, x 7/8 (4 req.) Order replacement parts by PART NO. - not by KEY NO. * Standard hardware - may be purchased locally. SERVICE PARTS Page BLOWER ASSEMBLY WARRANTY Limitation of Warranties and Claims Seller warrants to the original purchaser that the goods sold hereunder shall be free from defects in workmanship and material under normal use and service (except in those cases where the materials are supplied by the buyer) for a period of one year from the date of original installation or eighteen (18) months from the date of shipment, whichever occurs first. The liability of seller under this warranty is limited to replacing, repairing, or issuing credit (at cost, F.O.B. factory and at seller s discretion) for any part or parts which are returned by buyer during such period provided that: a. seller is notified in writing within ten (10) days following discovery of such defects by buyer, or within ten (10) days after such defects should reasonably have been discovered, whichever is less; b. the defective unit is returned to seller, transportation charges prepaid by buyer. c. payment in full has been received by seller or said products; and d. seller s examination of such unit shall disclose to its satisfaction that such defects have not been caused by misuse, neglect, improper installation, repair, alteration, act of God, or accident. No warranty made hereunder shall extend to any seller product whose serial number is altered, effaced or removed. Seller makes no warranty, express or implied, with respect to motors, switches, controls, or other components of seller s product, where such components are warranted separately by their respective manufacturers. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. In no event shall seller be liable to buyer for indirect, incidental collateral, or consequential damages of any kind. (BUYER S FAILURE TO PAY THE FULL AMOUNT DUE WITHIN SIXTY (60) DAYS OF DATE OF INVOICE SHALL OPERATE TO RELEASE SELLER FROM ANY AND ALL LIABILITY OR OBLIGATION ARISING PURSUANT TO ANY WARRANTY, EXPRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, MADE IN CONNECTION WITH ANY CONTRACT FORMED HEREUNDER. BUYER AGREES THAT SUCH FAILURE TO PAY SHALL CONSTITUTE A VOLUNTARY WAIVER OF ANY AND ALL SUCH WARRANTIES ARISING PURSUANT TO SUCH CONTACT.) TWIN CITY FAN & BLOWER, 5959 Trenton Lane, Minneapolis, MN A

47 MODELS T900 T1500 CEILING / WALL-MOUNT VENTILATORS 120V Page 1 READ AND SAVE THESE INSTRUCTIONS WARNING TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR IN- JURY TO PERSONS, OBSERVE THE FOLLOWING: 1. Use this unit only in the manner intended by the manufacturer. If you have questions, contact the manufacturer at the address or telephone number listed in the warranty. 2. Before servicing or cleaning unit, switch power off at service panel and lock the service disconnecting means to prevent power from being switched on accidentally. When the service disconnecting means cannot be locked, securely fasten a prominent warning device, such as a tag, to the service panel. 3. Installation work and electrical wiring must be done by a qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction codes and standards. 4. Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel burning equipment to prevent backdrafting. Follow the heating equipment manufacturer s guideline and safety standards such as those published by the National Fire Protection Association (NFPA), and the American Society for Heating, Refrigeration and Air Conditioning Engineers (ASHRAE), and the local code authorities. 5. When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities. 6. Ducted fans must always be vented to the outdoors. 7. To reduce the risk of fire, use only metal ductwork. 8. If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application and be connected to a GFCI (Ground Fault Interrupter) - protected branch circuit. 9. Never place a switch where it can be reached from a tub or shower. 10. This unit must be grounded. CAUTION! 1. For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors. 2. To avoid motor bearing damage and noisy and/or unbalanced impellers, keep drywall spray, construction dust, etc. off power unit. 3. Please read specification label on product for further information and requirements. Installer: Leave this manual with the homeowner. Homeowner: Use and Care information on page 3. TABLE OF CONTENTS This manual is divided into sections as follows: TYPICAL INSTALLATION This section shows a common installation in new and existing, frame construction. - Mounting (new construction) - Mounting (existing construction) - Wiring - Ducting (horizontal blower discharge) MOUNTING OPTIONS WIRING OPTIONS -Wiring Plate Position DUCTING OPTIONS - Blower Discharge Positions - Ducting (vertical blower discharge) USE AND CARE SERVICE PARTS WARRANTY

48 MODELS T900 T1500 TYPICAL INSTALLATION MOUNTING (New Frame Construction) TYPICAL INSTALLATION WIRING Page 2 12 ROUND DUCT 8 X 12 TO 12 ROUND TRANSITION BLACK TO BLACK EDGE OF HOUSING CEILING JOIST (24 centers shown) GROUND TO WIRING PLATE WIRING PLATE GRILLE NUT (Install into square holes in housing) Ventilator factory-shipped in horizontal discharge position. MOUNTING BRACKETS factory-shipped in position for ½ ceiling material. WHITE TO WHITE 120 VAC LINE IN Ventilator can be wired from outside of housing. Use UL approved connectors to wire per local codes. GRILLE SCREW GRILLE (Install after ceiling is finished.) Factory-shipped unit installed in new construction. MOUNTING (Existing Frame Construction) DUCTING (Horizontal blower discharge) ROOF CAP FINISHED CEILING MATERIAL 8 X 12 TO 12 ROUND TRANSITION 12 ROUND DUCT MOUNTING BRACKETS factory-shipped in position for ½ ceiling material. CEILING JOIST (24 centers shown) 8 X 12 TO 12 ROUND TRANSITION 12 ROUND DUCT Ventilator factory-shipped in horizontal discharge position. GRILLE MOUNTING SCREWS GRILLE NUT (Install into square holes in housing) GRILLE SCREW Factory-shipped unit installed in existing construction. 12 ROUND ELBOW WALL CAP Two ways to connect ductwork to a factory-shipped unit. IMPORTANT: Remove shipping tape from damper Remove the shipping tape from the damper flap and make sure that damper flap opens and closes freely inside the ductwork. Use duct tape to make ductwork connections secure and air-tight.

49 MODELS T900 T1500 MOUNTING OPTIONS ¼-20 hex nuts secure mounting brackets to housing. Loosen and re-tighten or remove and replace nuts as necessary for desired mounting bracket position. Factory-shipped Horizontal discharge 1 1 / 8" MAX. Factory-shipped Horizontal discharge 1½" to 2½" DUCTING OPTIONS BLOWER DISCHARGE POSITIONS DUCT CONNECTOR (this side) Page 3 MOVABLE PANEL DUCT (Change to this CONNECTOR location) (this side) 22" 18" Mounting brackets in factory-shipped position, mounted directly to joists. (Outlet parallel to joists.) (New construction) Mounting brackets flipped over and mounted to additional framing. (Outlet perpendicular to joists.) (New or Existing construction) MOVABLE PANEL Ventilator shown in horizontal discharge position (factory shipped). Ventilator shown in vertical discharge position (change movable panel to new location as shown). Housing Converted to Vertical Discharge 18" Mounting brackets flipped over and mounted to additional framing (Outlet vertical.) (New or Existing construction) WIRING OPTIONS WIRING PLATE POSITION 1½" to 2½" Factory-shipped Horizontal discharge 22" Mounting brackets flipped over and mounted to top of housing. Housing secured with cables. (Outlet parallel to joists.) (New or Existing construction) VERTICAL POWER CABLE CONNECTION HORIZONTAL POWER CABLE CONNECTION Wiring plate mounts to side or top of housing. DUCTING 12 ROUND DUCT 8 X 12 TO 12 ROUND TRANSITION (Vertical blower discharge) USE AND CARE ROOF CAP Typical ductwork connection to a ventilator converted to vertical discharge. Ventilator is designed for continuous operation. If desired, it may be controlled using an on/off switch or a solid-state, variable speed control. Follow wiring instructions packed with control, and adhere to all local and state codes, and the National Electrical Code. WARNING: To reduce the risk of electric shock, disconnect from power supply before servicing. To clean grille: Use appropriate vacuum attachment or remove grille and clean with a soft cloth and mild soap or detergent. Dry grille thoroughly before reinstalling. To clean blower assembly: Remove grille, unplug blower from housing, remove blower mounting nuts, and carefully remove blower from housing. Use appropriate vacuum attachment or a soft cloth and mild soap or detergent to clean blower discharge area and wheel. DO NOT ALLOW WATER TO ENTER MOTOR. Make sure blower assembly is completely dry before reinstalling. Motor is permanently lubricated. Do not oil or disassemble motor.

50 MODELS T900 T1500 SERVICE PARTS SERVICE PARTS Page 4 KEY NO. PART NO. DESCRIPTION Damper Flap Screw, #8B x ¼* (10 req.) Duct Connector Housing Assembly Mounting Bracket (2 req.) Mounting Screw (4 req.) Wiring Harness Ground Screw, #10-32 x ½* (2 req.) Wiring Adapter Plate Insulation Mounting Clip (16 req.) Grille Nut (4 req.) Movable Housing Panel Screw, #10-24 x.375* (8 req.) Outlet Box Cover Strain Relief Bushing Insulation, Front Insulation, Base Insulation, Back Motor Bracket Whiz Nut, ¼-20* (11 req.) Screw, ¼-20 x ½* (5 req.) Blower Scroll Motor (T900) Motor (T1500) Nut, Hex Flange 5/16-18* (5 req.) Support Bracket Wheel Clamp Blower Wheel (includes Key No. 26) Inlet Ring Screw, #8-18 x ¼* (5 req.) Scroll Support Channel Blower Assembly Complete (T900) (Includes Key Nos. 19 thru 30) Blower Assembly Complete (T1500) (Includes Key Nos. 19 thru 30) Grille Grille Screw (4 req.) Order replacement parts by PART NO. - not by KEY NO. * Standard hardware - may be purchased locally. + Not shown assembled BLOWER ASSEMBLY WARRANTY Limitation of Warranties and Claims Seller warrants to the original purchaser that the goods sold hereunder shall be free from defects in workmanship and material under normal use and service (except in those cases where the materials are supplied by the buyer) for a period of one year from the date of original installation or eighteen (18) months from the date of shipment, whichever occurs first. The liability of seller under this warranty is limited to replacing, repairing, or issuing credit (at cost, F.O.B. factory and at seller s discretion) for any part or parts which are returned by buyer during such period provided that: a. seller is notified in writing within ten (10) days following discovery of such defects by buyer, or within ten (10) days after such defects should reasonably have been discovered, whichever is less; b. the defective unit is returned to seller, transportation charges prepaid by buyer. c. payment in full has been received by seller or said products; and d. seller s examination of such unit shall disclose to its satisfaction that such defects have not been caused by misuse, neglect, improper installation, repair, alteration, act of God, or accident. No warranty made hereunder shall extend to any seller product whose serial number is altered, effaced or removed. Seller makes no warranty, express or implied, with respect to motors, switches, controls, or other components of seller s product, where such components are warranted separately by their respective manufacturers. THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. In no event shall seller be liable to buyer for indirect, incidental collateral, or consequential damages of any kind. (BUYER S FAILURE TO PAY THE FULL AMOUNT DUE WITHIN SIXTY (60) DAYS OF DATE OF INVOICE SHALL OPERATE TO RELEASE SELLER FROM ANY AND ALL LIABILITY OR OBLIGATION ARISING PURSUANT TO ANY WARRANTY, EXPRESS OR IMPLIED, WHETHER STATUTORY OR OTHERWISE, INCLUDING ANY IMPLIED WARRANTY OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, MADE IN CONNECTION WITH ANY CONTRACT FORMED HEREUN- DER. BUYER AGREES THAT SUCH FAILURE TO PAY SHALL CONSTITUTE A VOLUNTARY WAIVER OF ANY AND ALL SUCH WARRANTIES ARISING PURSUANT TO SUCH CONTACT.) TWIN CITY FAN & BLOWER, 5959 Trenton Lane, Minneapolis, MN B

51 Propeller Wall Fans INSTALLATION, OPERATION & MAINTENANCE MANUAL IM-4800 August 2014 Models: TCPE, WPB, WPD Twin City Fan & Blower Catalogs 4800 and 4820 provide additional information on this equipment. These catalogs can be found at or by contacting your local Twin City Fan & Blower sales representative. TCPE WPB WPD Model Nomenclature TCP E A Model TCPE, Direct Drive E = Exhaust Propeller Diameter Design Vintage / Motor Type A = Design A AE = Design A with EC Motor Speed 0 = 800 or 1350 RPM 1 = 1100 or 1500 RPM 2 = 1700 or 1650 RPM WPB - E E Model WPD = Wall Propeller Fan, Direct Drive WPB = Wall Propeller Fan, Belt Driven E = Exhaust, S = Supply Fan Size Propeller Type L1 & L2 = Level 1 & Level 2, Fabricated Steel, Fixed Pitch (5-Bladed) E = Cast Aluminum, Adjustable Pitch (4 and 8-Bladed) C = Cast Aluminum, Adjustable Pitch (4 and 6-Bladed) Z = Fabricated Steel, Fixed Pitch (5-Bladed) No. of Blades Propeller Blade Angle (C, E, and Z, Level 3, Propellers Only) 2013 Twin City Fan Companies, Ltd.