Cool, Dry, Quiet CDQ

Transcription

1 Installer s Guide Cool, Dry, Quiet CDQ Roofcurb Model Number BAYCURB04 BAYCURB043 BAYCURB06 BAYCURB07 Used with 3-5 Ton Light Commercial Rooftop Units September 006 ACC-SVN71A-EN

2 Table of Contents General Clearances General Information Installation ton unit clearances / - 5 ton unit clearances ton (BAYCURB04) with 8" CDQ wheel ton curb (BAYCURB04) with 3" CDQ wheel ton curb (BAYCURB04) with 36" CDQ wheel ton curb (BAYCURB043) with 36" CDQ wheel / - 81/ ton curb (BAYCURB043) with 4" CDQ wheel ton curb (BAYCURB043) with 48" CDQ wheel B and 151C unit curb (BAYCURB06) with 48" CDQ wheel B unit curb (BAYCURB06) with 54" CDQ wheel C unit curb (BAYCURB06) with 60" CDQ wheel C unit curb (BAYCURB07) with 54" CDQ wheel C unit curb (BAYCURB07) with 60" wheel B, 41C unit curb (BAYCURB07) with 66" CDQ wheel CDQ ducts ton cooling corner weights and center of gravity ton heat pump corner weight and center of gravity ton gas heating corner weights and center of gravity Center of gravity / - 5 ton corner weights and center of gravity Accessory Weights ton disconnect / - 5 ton disconnect CDQ wiring for 3-10 ton PRTU Cleaning the Desiccant Wheel Cleaning the Motor Cleaning the CDQ Module Drive Belt Tension ACC-SVN71A-EN

3 General Information WARNING Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. CAUTION Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury. It may also be used to alert against unsafe practices. CAUTION Indicates a situation that may result in equipment or property-damageonly accidents. General This manual describes the layout and installation procedures required to properly assemble and install the roof curb. Illustrations in figures 1 and provide dimensional data regarding roof opening construction. Each curb package ships unassembled, along with the required hardware and gasketing material. Roof insulation, cant strips, flashing (if desired), nails, and sheet metal screws must be furnished by the installing contractor. Clearances The recommended clearances for single-unit installations are illustrated in Figure 1 on page 6 for 3-10 ton units or Figure, p. 6 for 1 1/ - 5 ton units. These minimum requirements are not only an important consideration when determining unit placement, but they are also essential to ensure adequate serviceability, maximum capacity, and peak operation efficiency. Any reduction of the unit clearances indicated in this illustration may result in condenser coil starvation, or the recirculation of warm condenser air. Actual clearances which appear to be inadequate should be reviewed with a local sales engineer. Initial Inspection Compare the order number on the shipping label with the accessory identification information on the ordering and shipping documents to verify that the correct accessory has been received. ACC-SVN71A-EN 3

4 Installation WARNING Heavy Objects! Do not use cables (chains or slings) except as shown. Each of the cables (chains or slings) used to lift the unit must be capable of supporting the entire weight of the unit. Lifting cables (chains or slings) may not be of the same length. Adjust as necessary for even unit lift. Other lifting arrangements may cause equipment or property-only damage. Failure to properly lift unit could result in death or serious injury. See details below. Read the entire manual carefully to become familiar with the roof curb installation procedures. If the roof curb will be mounted on a new building, it can be assembled at any convenient location and installed as soon as the roof support members are in place. As a general rule, the curb should be placed directly on the roof support members. Use tack welding or other suitable fastening method to secure the roof curb in place. The curb can also be mounted on a roof deck. In this case, additional nailing plates must be provided directly below the flanges of the curb to give further support and to minimize vibration. When the installation is on an existing building, hoist the shipping container directly onto the roof. Supply and Return Air Ductwork All ductwork must be run and attached to the curb before the unit is set into place. See Figure 13, p. 19. All ductwork must be fabricated and installed by the installing contractor. To ensure proper duct construction and installation, SMACNA recommendations should be closely followed. Note: All field fabricated panels used must be insulated. Roof Opening For safety and sound considerations, do not cut out the entire roof deck within the curb area. Roof Support The roof must be capable of adequately supporting the weight of the rooftop unit as well as that of the curb; refer to Figure 14, p. and Table 1 on page 0 for specific center-of-gravity, corner weight information and accessory weights. Units may be set either lateral or parallel to the roof support members. The combined weight of the unit, accessories, and curb should be evenly spaced between a minimum of two () supports. Ensure that the curb s position on the roof supports does not interfere with the clearance required for the supply/return ductwork. See Figure 1, p. 6 for 3-10 ton units or Figure, p. 6 for 1 1/ - 5 ton units. For convenience, it is suggested that the starting collars for the supply and return ductwork be installed before the curb is placed into position. WARNING Hazardous Voltage w/ Capacitors! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. Roof Curb Installation for BAYCURB04B & BAYCURB043B w/ CDQ T/Y* A, T/Y*09A, T/Y*10A, T/Y*10A 1. Disconnect electrical power supplied to the unit. Locate powered convenience outlet wires 401A and 400A. See Figure 15 on page Disconnect wires 401A and 400A from the line side of the unit circuit breaker or unit disconnect switch and reconnect to the load side. See Figure 17 on page Locate the powered convenience outlet receptacle wires 409A & 410A (Figure 15, p. 5). 5. Disconnect these wires from the receptacle. See Figure 15 on page Connect wires 409A & 410A to CDQ T1 timer. Terminate on to terminals 4 & 6. Figure 17 on page Locate the unit 4VAC control transformer TNS1. 8. Connect the following CDQ components to the common side of TNS1. a. T1 CDQ Timer: Terminal B to Common b. R1 / CC1: Terminal 13 to Common 4 ACC-SVN71A-EN

5 WARNING Hazardous Voltage w/ Capacitors! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power cannot be inadvertently energized. For variable frequency drives or other energy storing components provided by Trane or others, refer to the appropriate manufacturer s literature for allowable waiting periods for discharge of capacitors. Verify with an appropriate voltmeter that all capacitors have discharged. Failure to disconnect power and discharge capacitors before servicing could result in death or serious injury. 9. Connect R1/CC1 terminal 14 to the unit compressor contactor coil CC1. Terminate the wire on the same side of the contactor coil as wire 87A. See Figure 18 on page Connect R/CC terminal 14 to the unit compressor contactor coil CC. Terminate the wire on the same side of the contactor coil as wire 90A. See Figure 18 on page Connect T1 CDQ Timer terminal A to the unit control transformer TNS1. Wire 31A, see Figure 18 on page 9 Roof Curb Installation for BAYCURB05B, BAYCURB06B, & BAYCURB07B w/ CDQ T/Y*151-41A 1. Disconnect electrical power supplied to the unit. Locate powered convenience outlet wires 401A and 400A. See Figure 16 on page Disconnect wires 401A and 400A from the line side of the unit circuit breaker or unit disconnect switch and reconnect to the load side. See Figure 18 on page Locate the powered convenience outlet receptacle wires 41A & 413A 5. Disconnect these wires from the receptacle. See Figure 18 on page Connect wires 41A & 413A to CDQ T1 timer. Terminate on to terminals 4 & 6. Figure 18 on page Locate the unit 4VAC control transformer TNS1. 8. Connect the following CDQ components to the common side of TNS1. a. T1 CDQ Timer: Terminal B to Common b. R1 / CC1: Terminal 13 to Common c. R / CC: Terminal 13 to Common ACC-SVN71A-EN 5

6 CLEARANCE 36 (914 MM) CLEARANCE HORIZONTAL FLOW - 18 (457 MM) DOWNFLOW 36 (914 MM) TYPICAL ROOF OPENING CLEARANCE FROM TOP OF UNIT 7 CLEARANCE 48 (119 MM) CLEARANCE 36 (914 MM) Figure ton unit clearances CLEARANCE MM CLEARANCE MM UNIT OUTLINE CLEARANCE FROM TOP OF UNIT MM ROOF OPENING CLEARANCE MM CLEARANCE MM Figure. 1 1/ - 5 ton unit clearances 6 ACC-SVN71A-EN

7 64 3/4 O.D. 14 9/16 8 3/ /16 4 7/ /16 5/8 40 7/16 O.D. 5 3/16 1 1/4 RETURN 18 7/8 18 9/16 SUPPLY 0GA PAN 0 GA. D BOTTOM 37 7/ /16 O.D. I.D. RETURN SUPPLY PLAN VIEW BOTTOM PLAN VIEW TOP 40 7/ / /4 4 7/ /16 5/8 UNIT OVERHANG 34 ACCESS FOR CONTROLS FRONT VIEW 16 1/16 8 3/ /16 SIDE VIEW 3 5/8 1 1/ TRANE 8" CDQ WHEEL WHEEL SUPPORT UNIT OVERHANG 7 1 1/" 3LB DENSITY INSULATION 18 GA. GALV. WHEEL "C" 1 OPTIONAL FILTERS (1) 0X4X (1) 1X0X 1 1/4 1 1 Figure 1. 3 ton (BAYCURB04) with 8" CDQ wheel ACC-SVN71A-EN 7

8 14 9/16 8 3/ / /4 O.D. 4 7/ /4 1 1/16 4 1/ 5 3/ /16 RETURN 18 7/8 0 5/8 SUPPLY 0GA PAN 0 GA. D BOTTOM RETURN SUPPLY 4 1/ 39 1/ 40 7/ /16 O.D. O.D. I.D. I.D. PLAN VIEW BOTTOM PLAN VIEW TOP 1/16 41/ 40 7/16 4 7/ /4 1 1/16 4 UNIT OVERHANG 39 ACCESS DOOR ACCESS FOR CONTROLS FRONT VIEW 16 1/16 8 3/ /16 3 5/8 SIDE VIEW 1 1/ WHEEL SUPPORT WHEEL "W" UNIT OVERHANG TM TRANE 3" CDQ WHEEL 7 WHEEL "C" 1 1/" 3LB DENSITY INSULATION 18 GA. GALV. 1 OPTIONAL FILTERS (1) 0X4X (1) 1X0X 1 1/4 1 1 Figure. 4 ton curb (BAYCURB04) with 3" CDQ wheel 8 ACC-SVN71A-EN

9 TM Installation 14 9/16 8 3/ / /4 O.D. 4 7/16 1/ /4 45 1/ 5 3/ /16 RETURN 18 7/8 3 5/8 SUPPLY 0GA PAN 0 GA. D BOTTOM 45 1/ 40 7/16 O.D. RETURN SUPPLY 41/ 377/16 O.D. I.D. I.D. PLAN VIEW BOTTOM PLAN VIEW TOP 5 1/ / 40 7/16 4 7/16 1/ /4 4 UNIT OVERHANG 4 ACCESS DOOR ACCESS FOR CONTROLS FRONT VIEW 16 1/16 8 3/ /16 3 5/8 SIDE VIEW 1 1/ 1 1/" 3LB DENSITY INSULATION 18 GA. GALV. 1 WHEEL SUPPORT WHEEL "W" UNIT OVERHANG TRANE 36" CDQ WHEEL 7 WHEEL "C" 1 1/4 1 1 OPTIONAL FILTERS (1) 0X4X (1) 1X0X Figure 3. 5 ton curb (BAYCURB04) with 36" CDQ wheel ACC-SVN71A-EN 9

10 Figure 4. 6 ton curb (BAYCURB043) with 36" CDQ wheel 10 ACC-SVN71A-EN

11 83 1/ 83 1/ 18 1/ 8 5/8 18 1/ 8 5/8 3 7/ / RETURN 34 3/8 34 3/8 14 1/8 14 1/8 SUPPLY 0GA PAN 0 GA. D BOTTOM 51 1/ 49 3/8 O.D. O.D. RETURN SUPPLY PLAN VIEW BOTTOM PLAN VIEW TOP 51 1/ 49 3/8 8 5/8 3 7/ UNIT OVERHANG 48 ACCESS DOOR ACCESS FOR CONTROLS FRONT VIEW 0 8 5/8 18 1/ 36 3/8 SIDE VIEW 1 1/ TM TRANE 4" CDQ WHEEL 1 1/" 3LB DENSITY INSULATION UNIT OVERHANG 7 18 GA. GALV. 1 WHEEL SUPPORT WHEEL "W" WHEEL "C" 1 1/4 1 1 OPTIONAL FILTERS () 4X4X Figure / - 81/ ton curb (BAYCURB043) with 4" CDQ wheel ACC-SVN71A-EN 11

12 83 1/ 83 1/ O.D. 18 1/ 8 5/8 18 1/ 8 5/8 9 7/ / RETURN 34 3/8 34 3/8 0 1/8 0 1/8 SUPPLY 0GA PAN 0 GA. D BOTTOM 57 1/ 49 3/8 O.D. O.D. RETURN SUPPLY PLAN VIEW BOTTOM PLAN VIEW TOP 57 1/ 49 3/8 8 5/8 9 7/ ACCESS DOOR ACCESS FOR CONTROLS / FRONT VIEW 0 8 5/8 18 1/ 36 3/8 SIDE VIEW 1 1/ TM TRANE 48" CDQ WHEEL 1 1/" 3LB DENSITY INSULATION 18 GA. GALV. WHEEL SUPPORT 1 WHEEL "C" WHEEL "W" 8 1 1/4 1 1 OPTIONAL FILTERS () 4X4X Figure ton curb (BAYCURB043) with 48" CDQ wheel 1 ACC-SVN71A-EN

13 Figure B and 151C unit curb (BAYCURB06) with 48" CDQ wheel ACC-SVN71A-EN 13

14 14 Figure B unit curb (BAYCURB06) with 54" CDQ wheel 14 ACC-SVN71A-EN

15 14 Figure C unit curb (BAYCURB06) with 60" CDQ wheel ACC-SVN71A-EN 15

16 14 Figure C unit curb (BAYCURB07) with 54" CDQ wheel 16 ACC-SVN71A-EN

17 116 3/16 O.D /16 I.D / /8 1/4 5 1/4 8 9/ /8 80 RETURN SUPPLY 69 1/ 0 GA D BOTTOM O.D. I.D RETURN SUPPLY 0 GA PAN 7 1/ PLAN VIEW BOTTOM PLAN VIEW TOP / 38 1/ /8 UNIT OVERHANG 66 ACCESS DOOR ACCESS FOR CONTROLS FRONT VIEW 3 3/4 5 1/4 8 9/ /8 SIDE VIEW 1 1/ TM TRANE 60" CDQ WHEEL 1 1/" 3LB DENSITY INSULATION 8 14 GA. GALV. 1 WHEEL SUPPORT WHEEL "W" WHEEL "C" 1 1/4 1 1 OPTIONAL FILTERS (3) 5X5X Figure C unit curb (BAYCURB07) with 60" wheel ACC-SVN71A-EN 17

18 116 3/16 O.D. 1163/ / / /8 1/4 5 1/4 8 9/ /8 80 RETURN SUPPLY 69 1/ 0 GA D BOTTOM O.D. I.D RETURN SUPPLY 0 GA PAN 7 1/ PLAN VIEW BOTTOM PLAN VIEW TOP / /4 38 5/8 UNIT OVERHANG 7 ACCESS DOOR ACCESS FOR CONTROLS FRONT VIEW 3 3/4 5 1/4 8 9/ /8 SIDE VIEW 1 1/ TM TRANE 66" CDQ WHEEL 1 1/" 3LB DENSITY INSULATION 14 GA. GALV. 1 WHEEL SUPPORT WHEEL "W" 8 WHEEL "C" 1 1/4 1 1 OPTIONAL FILTERS (3) 4X4X (3) 1X4X Figure 1. 40B, 41C unit curb (BAYCURB07) with 66" CDQ wheel 18 ACC-SVN71A-EN

19 3-10 Ton 1 1/-5 Ton Figure 13. CDQ ducts ACC-SVN71A-EN 19

20 Table ton cooling corner weights and center of gravity Net Corner Weight Center of Grav. Unit Model Weight A B C D Length Width TSC036E(1,3,4,W) TSC036A(1,3,4,W)* TSC048A1* TSC048A(3,4,W)* TSC048E(1,3,4,W) TSC060A(1,3,4,K,W)* TSC060E(1,3,4,W) TSC07A(3,4,K,W)* TSC090A(3,4,K,W)* TSC09A(3,4,W)* TSC10A(3,4,K,W)* TSC10A(3,4,K,W)* THC036A1* THC033A(3,4,W)* THC036A(3,4,W)* THC048A1* THC043A(3,4,W)* THC048A(3,4,W)* THC060A1* THC060A(3,4,W)* THC063A(3,4,W)* THC07A(3,4,W)* THC09A(3,4,W)* THC10A(3,4,W)* THC10A(3,4,W)* Note: Corner weights are given for information only. Unit is to be supported continuously by a curb or equivalent frame support. Table ton heat pump corner weight and center of gravity Net Corner Weight Center of Grav. Unit Model Weight A B C D Length Width WSC036A(1,3,4,W)* WSC036E(1,3,4,W) WSC048A(1,3,4,W)* WSC048E(1,3,4,W) WSC060A(1,3,4,W)* WSC060E(1,3,4,W) WSC060(A,B)(D,T)* WSC07A(3,4,W)* WSC07(A,B)(D,T)* WSC090A(3,4,W)* WSC090(A,B)(D,T)* WSC10A(3,4,W)* WSC10AT* ACC-SVN71A-EN

21 Table ton gas heating corner weights and center of gravity Net Weight Corner Wt. (lbs) Center of Gravity (In.) Unit Model (lbs) A B C D Length Width YSC036A1*(L,M,X,Y) YSC036A1*(H,Z) YSC036A(3,4,W)*(L,M,X,Y) YSC036A(3,4,W)*(H,Z) YSC036E(1,3,4,W) YSC048A1*(L,M,X,Y) YSC048A1*(H,Z) YSC048A(3,4,W)*(L,M,X,Y) YSC048A(3,4,W)*(H,Z) YSC048E(1,3,4,W) YSC060A1*(L,M,X,Y) YSC060A1*(H,Z) YSC060A(3,4,K,W)*(L,M,X,Y) YSC060A(3,4,K,W)*(H,Z) YSC060E(1,3,4,W YSC07A(3,4,K,W)*(L,X) YSC07A(3,4,W)*(M,Y) YSC07A(3,4,K,W)*(H,Z) YSC090A(3,4,K,W)*(L,X) YSC090A(3,4,W)*(M,Y) YSC090A(3,4,K,W)*(H,Z) YSC09A(3,4,W)*(L,X) YSC09A(3,4,W)*(M,Y) YSC09A(3,4,W)*(H,Z) YSC10A(3,4,K,W)*(L,X) YSC10A(3,4,W)*(M,Y) YSC10A(3,4,K,W)*(H,Z) YSC10A(3,4,K,W)*(L,X) YSC10A(3,4,W)*(M,Y) YSC10A(3,4,K,W)*(H,Z) YHC036A1*(L,M,X,Y) YHC036A1*(H,Z) YHC033A(3,4,W)*(L,M,X,Y) YHC036A(3,4,W)*(L,M,X,Y) YHC033A(3,4,W)*(H,Z) YHC036A(3,4,W)*(H,Z) YHC048A1*(M,Y) YHC048A1*(H,Z) YHC043A(3,4,W)*(L,M,X,Y) YHC048A(3,4,W)*(L,M,X,Y) YHC043A(3,4,W)*(H,Z) YHC048A(3,4,W)*(H,Z) YHC060A1*(L,M) YHC060A1*(H,Z) YHC060A(3,4,W)*(L,M,X,Y) YHC063A(3,4,W)*(L,M,X,Y) YHC060A(3,4,W)*(H,Z) YHC063A(3,4,W)*(H,Z) YHC07A(3,4,W)*(L,X) YHC07A(3,4,W)*(M,Y) YHC07A(3,4,W)*(H,Z) YHC09A(3,4,W)*(L,X) YHC09A(3,4,W)*(M,Y) YHC09A(3,4,W)*(H,Z) YHC10A(3,4,W)*(L,X) YHC10A(3,4,W)*(M,Y) YHC10A(3,4,W)*(H,Z) YHC10A(3,4,W)*(L,X) YHC10A(3,4,W)*(M,Y) YHC10A(3,4,W)*(H,Z) ACC-SVN71A-EN 1

22 Table / - 5 ton corner weights and center of gravity Net Weight Corner Wt. (lbs) Center of Gravity (In.) Unit Model (lbs) A B C D Length Width YC*103C YC*10B YC*11C YC*15C YC*150C YC*151C YC*155B YC*180B YC*181C YC*175C YC*10C YC*11C YC*00B YC*40B YC*41C YC*50B YC*300B YC*301C TC*103C TC*11C TC*15C TC*150C TC*151C TC*155B TC*180B TC*181C TC*175C TC*10C TC*11C TC*00B TC*40B TC*41C TC*50B TC*300B TC*301C WC*10B WC*150B WC*180B WC*40B Unit weights are maximum value of Horizontal and Downflow configuration,. oversize motor installed, and largest heater for YC units. Figure 14. Center of gravity ACC-SVN71A-EN

23 Table 5. Accessory Weights T*C A, TSC060B, Y*C A, YSC060B, T/YSC036E-060E, WSC A, WSC036E-048E, WSC060B Option/ Accessory Description Net lbs Net kg Electric Heat Economizer Motorized Damper Manual Damper Barometric Relief 7 3. Oversize Motor 5.3 Belt Drive Motor (3 phase only) Hinged Access Hail Guard Through the Base Electrical Through the Base: Gas Unit Disconnect Switch Unit Circuit Breaker Conv. Outlet: Unpowered Conv. Outlet: Powered TCI, LCI NOVAr HPC Frostat Crankcase Heater Smoke Detector, Return 7 3. Smoke Detector, Supply Clogged Filter Switch Fan Fail Switch Discharge Air Tube Roofcurb Hard Start Kit All Zone Sensors Reheat Coil Table 6. Accessory Weights T*C07-10A, TSC07-10B, Y*C07-10A, YSC07-10B, WSC060E, WSC07-10A, WSC07-090B Option / Accessory Description Net lbs Net kg Electric Heat Economizer Motorized Damper Manual Damper Barometric Relief Power Exhaust Oversize Motor Hinged Access Hail Guard Through the Base: Electrical Through the Base: Gas Unit Disconnect Switch Unit Circuit Breaker Conv. Outlet: Unpowered Conv. Outlet: Powered TCI, LCI NOVAR HPC Frostat Crankcase Heater Smoke Detector, Return 7 3. Smoke Detector, Supply Clogged Filter Switch Fan Fail Switch Discharge Air Tube Roofcurb LP Conversion Kit All Zone Sensors Reheat Coil ACC-SVN71A-EN 3

24 Table 7. Accessory Weights (Net lbs.) Manual Power Over O.A. O.A. Roof size Model Econ Damp Damper curb Mtr. YCD,TCD103C,10B, 150C & WCD10B YCD,TCD11C,151C, B,10C & WCD150B,WCD180B YCD,TCD181C,11C, B,41CYCD,TCD3 00B,301C & WCD40B 4 ACC-SVN71A-EN

25 Figure ton disconnect ACC-SVN71A-EN 5

26 Figure / - 5 ton disconnect 6 ACC-SVN71A-EN

27 Figure 17. CDQ wiring for 3-10 ton PRTU ACC-SVN71A-EN 7

28 Figure 18. CDQ wiring for 1-0 ton PRTU 8 ACC-SVN71A-EN

29 Routine Maintenance WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury. CAUTION! Protect Eyes! Always wear proper eye protection when blowing compressed air or water. Failure to wear proper personal protection equipment (PPE) could result in minor to moderate injury. CAUTION Cleaners, Solvents and Excess Pressure! Do not use acid based cleaners, aromatic solvents, steam, or temperatures in excess of 170 F to clean wheel. Do not use air or water with pressures in excess of 0 PSIG. Doing so may cause damage to the wheel! CAUTION! Keep Wheel Clean! Accumulated dirt and debris may result in reduced airflow and/or increased pressure drop across the wheel. Increased pressure drop can result in permanent damage to the wheel or module. Cleaning the Desiccant Wheel If routine inspection indicates there is dirt or dust buildup in the wheel, clean the wheel using the following procedure: Vacuum the wheel 1. Using a standard shop vacuum, vacuum any debris from both faces of the wheel. Slowly work around the entire face of the wheel to complete the procedure. Do not damage wheel face by excessive pressure of the vacuum nozzle on the wheel face.. Using 0 psig clean dry air, and a small air nozzle, blow air through one face of the wheel. At a similar location on the opposite side of the wheel, gently apply a shop vacuum to receive any remaining debris exiting the wheel. In most instances this should adequately clean the wheel. In the event the wheel is subject to an aerosol, smoke or other material that coats the wheel, it can be washed with water and/or a mild detergent. The desiccant wheel can be washed thoroughly without affecting the performance of the wheel. The wheel will simply dry out following a washing procedure and resume dehumidification without any deviation in performance. If the desiccant wheel can be easily removed from the cassette or unit, it is recommended to do so to facilitate the washing process. However, in most cases, it is impractical to remove larger wheels and therefore, the washing procedure must take place within the air handling unit and provisions need to be made to collect the runoff water from the bottom of the unit. Washing the wheel 1. Disconnect all power.. Shield or remove all electrical components with plastic sheeting. Shield the bearing with plastic sheeting. Precautions should be taken to ensure the motor windings and capacitor do not get wet. 3. Ensure that an adequate drainage system exists to collect runoff water from the bottom of the unit. 4. Using standard pressure water (do not use a high pressure washer) and working from the lower half of the wheel, wash the wheel with a standard garden nozzle to flush any debris trapped within the flutes of the wheel. Minimize water contact with the seals. Wash from one side and vacuum up water from the other side with a wet vacuum. 5. Once the entire process side is adequately washed, rotate the wheel one half turn and wash the section that was at the top. 6. After washing, there will be a temporary derate in performance as the wheel dries out. To expedite the dry out time, regeneration preheat should be activated if it was provided. ACC-SVN71A-EN 9

30 Routine Maintenance Cleaning the Motor WARNING Hazardous Voltage! Disconnect all electric power, including remote disconnects before servicing. Follow proper lockout/ tagout procedures to ensure the power can not be inadvertently energized. Failure to disconnect power before servicing could result in death or serious injury. Disconnect all electrical power, then use a vacuum cleaner and brush to remove accumulated material from the CDQ wheel motor. The use of spray aerosol cleaners is not recommended. Examine the motor monthly for debris accumulation. Drive Belt Tension The drive belt is a link stretch belt designed to provide tension throughout the life of the belt. Inspect the belt annually for proper tracking and tension. A properly tensioned belt will turn the wheel immediately, with no visible slippage, when power is applied. If belt needs tensioning. Cleaning the CDQ Module 1. Disconnect all electrical power.. Use a vacuum cleaner to remove dust and debris from the module surfaces. 3. If needed, use a detergent solution to remove grease, oil, or other stubborn deposits from module surfaces. Follow the manufacturer s instructions regarding use of the product. 4. Rinse any cleaning product thoroughly from the module walls. The use of a water stream from a garden hose or high pressure washer is not recommended. Saturation of the wall panel insulation could result in potential microbial growth. 5. Examine the module monthly for material build-up on the wall surfaces. 30 ACC-SVN71A-EN

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32 Literature Order Number ACC-SVN71A-EN Date 09/06 Supersedes NEW Stocking Location Webb/Mason The manufacturer has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice.