A Zehnder Group Company HYDRONIC
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1 A Zehnder Group Company HYDRONIC fan coil units
2 Finally a Fan Coil Built to Last... The Rittling Way: Rittling Fan Coil products stand out of the crowd based on their unique heavyduty construction and custom applications capability. Originally designed for the rigors of the educational and security environment, these robust units feature full 6gauge sheet metal construction (4gauge available) along with an epoxy poly blend powder coat finish. One look at the Rittling product proves its heritage as part of the Rittling brand of institutional and commercial grade heating and cooling products. High Performance Based on Technology All Rittling Fan Coils are the result of years of research on the latest hydronic coil and fan technology available. High performance copper aluminum coils allow for the most effective heat transfer in a compact application. Rittling fans and housings are heavy duty as well. These steel assemblies allow for permanent balance and strength for years of trouble free performance. Unlimited Application Capability Our fan coil units compliment the renowned custom application excellence synonymous with the Rittling name. Custom hand built solutions for retrofit and replacement are part of our everyday life. If you do not see it here, consult your local Rittling Representative; Chances are we can do it! A Zehnder Group Company A Trusted Name in Hydronic Based Equipment Since 946, when Charles Rittling founded Rittling Heat Transfer, Inc., the company has led the industry in quality, responsiveness, and innovation. With patented and proven heating and cooling products, and custombuild engineering with CAD design capabilities, Rittling is a single source supplier for the full variety of hydronic solutions. Based in Western New York, Rittling employs a highly skilled and diverse work force. Certified ISO 900:2008, the company prides itself on the skills of its employees, the design talent of its engineers, and the cost saving innovations of management. Rittling is a green company that helps protect our environment through conservation, recycling, and disposal efforts that have been recognized in the award of 997 s New York State Governor s Award for Pollution Prevention. Built for the Whole Construction Team Whether you re an architect, engineer, or contractor, Rittling hydronic heating and cooling products are built to keep your job moving smoothly. Exacting quality control and ontime delivery systems make it easier to coordinate the many different components and aspects of largescale construction projects. Our onstaff engineering department and CAD systems result in lower operating costs, reduced pricing, and custombuild capabilities that rival any in the industry. FEATURES AND RATINGS Page Hydronic Fan Coil Units... Models and Airflow Arrangements Features Options & Accessory Equipment Ratings and Specifications Cooling Capacities Heating Capacities Selection Procedure Hot Water Calculations and Correction Factors AIR FLOW CORRECTION FACTORS VALVE PACKAGES CONTROLS PACKAGES DDC CONTROLS ELECTRIC HEATING DIMENSIONS & DATA CUSTOM BUILD CAPABILITIES SpecificationS WARRANTY... Back Cover
3 VERSATILITY, STYLE & COOLING/HEATING EFFICIENCY ENGINEERING EXCELLENCE & CONTEMPORARY DESIGN With more than 50 years experience in the design and manufacture of hydronic heating and cooling systems, Rittling understands your need for efficient heating/cooling equipment that will complement the décor. Rittling Fan Coil Units offer the latest in attractive design and are engineered to provide years of reliable operation and energyefficient comfort. All fan coil units run quietly and feature individual controls. Hydronic Fan Coil Units MEET SPECIFIC HEATING AND COOLING REQUIREMENTS Rittling Fan Coil Units are available in a wide range of models and air flow arrangements to satisfy the demands of your heating and cooling specifications. UNIFORM APPEARANCE All Rittling Fan Coil Units have the same height and the same depth per model only the length varies for different size units. This provides a consistent, attractive appearance when an installation calls for units of various lengths. FLEXIBLE SAFE INSTALLATION Rittling Fan Coil Units are available in floor, wall and ceilingmounted models. A black pedestal base on floor models provides clearance for most mopboards. The base can be repainted in the field if needed. All Rittling ceiling models come with a hinged front cover and safety chain(s) for simple and safe maintenance. EASY TO OPERATE Rittling Fan Coil Units feature threespeed control settings and optional s. The user has fingertip control over fan speed and room temperature. (Note: on ceiling units, speed switch assembly shipped loose.) DURABLE Front panels and tops are constructed of 6gauge cold rolled steel to withstand impact and rugged treatment. Exterior cabinet surfaces feature an epoxy powder coating to provide a durable, attractive finish.
4 MODEL Fan Coil Models and Airflow Arrangements ARRANGEMENT NUMBER FLOOR (FF) SLOPED (FS) FF200 FF220 FS200 LOW PROFILE FLOOR (FLF) LOW PROFILE HIDEAWAY (FLH) FLF50 FLH520 WALL (FW) FW260 FW270 FW280 PARTIALLY RECESSED WALL (FRW) FULLY RECESSED WALL (FFRW) FRW320 FFRW340 CEILING (FC) FC360 FC370 FC400 FULLY RECESSED CEILING (FFRC) FFRC40 FFRC430 FLOOR HIDEAWAY (FFH) FFH450 FFH460 CEILING HIDEAWAY (FCH) FCH470 CEILING HIDEAWAY WITH PLENUM (FCHP) FCHP480 FCHP500 2
5 Fan Coil Models Models in 20 Arrangements to Meet Your Specifications FFFLOOR 2 Arrangements (FF200 shown) FSSLOPED Arrangement (FS200 shown) FLFLOW PROFILE Arrangement (FLF50 shown) FWWALL 3 Arrangements (FW280 shown) FRWPARTIALLY RECESSED WALL Arrangement (FRW 320 shown) FFRWFULLY RECESSED WALL Arrangement (FFRW 340 shown) FCCEILING 3 Arrangements (FC360 shown) FFRCFULLY RECESSED CEILING 2 Arrangements (FFRC40 shown) FFHFLOOR HIDEAWAY 2 Arrangements (FFH450 shown) FCHCEILING HIDEAWAY Arrangement (FCH470 shown) FCHPCEILING HIDEAWAY WITH PLENUM 2 Arrangements (FCHP500 shown) 3
6 Fan Coil Unit Features A COOLING COIL 3Row Standard 4Row High Capacity 2Row Standard Low Profile 3Row High Capacity Low Profile Sturdy, mechanicallybonded copper/aluminum coil with 2 fins per inch and /2" nominal tubes. High BTU capacity with low noise. Coil assemblies tested for a maximum of 300 psig working pressure. Manual air vent B HEATING COIL (Not shown) Row Hot Water Optional Row Steam Optional Sturdy, mechanicallybonded copper/ aluminum coil with 2 fins per inch and /2" nominal tubes. Coil assemblies tested for a maximum of 300 psig working pressure. Can be mounted in reheat or preheat position. (Low profile reheat position only). Manual air vent C SPEED CONTROL/ACCESS DOOR Hidden from view, threespeed fan switch allows speed selection for comfort control. Easy opening access doors feature cam lock fasteners and are available with optional tamperresistant fasteners. (Speed control switch is not mounted on ceiling units, but shipped loose.) D BLOWER FAN HOUSING Provides excellent CFM output per unit size. Operating ampere ranges from 0.55 amps (50 cfm) to 2.2 amps (20 cfm), 20 volts. E MOTOR Motors are permanent split capacitor for extended, reliable motor life, low operating cost and quiet operation. Multispeed motors achieve a wide range of CFM delivered. F FRONT PANEL 6gauge (4gauge available) heavy duty front panel protects against impact. Fully insulated coil section to dampen sound and provide thermal efficiency. Closedcell rubber insulation ensures superior IAQ. Tamperresistant quarterturn fasteners included as standard. G FINISH Attractive ivory epoxy powder coating is standard. Additional colors are optionally available. Please furnish a color chip for custom color. H BLOWER DECK Blower deck enhances strength and stability, with easy accessibility. Removable for ease of maintenance. Fully insulated. I INTERNAL SUPPORT BRACKET All ceiling and wall units are equipped with internal mounting brackets for secure attachment to wall or ceiling. J ACCESS AREA Large roughin area at each end of the unit provides ample room for plumbing and electric controls. Removable front panel provides access to valve/piping connection (standard on left side) and electrical wiring area (standard on right side). Opposite orientation and opposite end connections for 4pipe systems available upon request. K LEVELING LEGS Four (4) optional leveling legs per unit allow for pitch adjustment and mounting on uneven surfaces. L DRAIN PAN Vertical units made of fire resistant ABS plastic or 304 stainless steel. Horizontal units made of 8gauge, epoxy powder coated, galvannealed corrosion resistant steel or 304 stainless steel. Positively sloped to ensure proper drainage and maximize protection against microbial growth. Fully insulated. M AUXILIARY DRAIN PAN Made of fire resistant ABS plastic. Positively sloped to ensure proper drainage and maximize protection against microbial growth. Provided with /2" NPT drain connection. Provided with tabs for easy, screwfree mounting. For valve and piping condensate control. 4
7 G O C A B I L H J M D E N K F N FILTER Oneinch disposable spun glass media slides easily into locating tabs. Easily removed from floor models without front panel removal. O STEEL BAR GRILLE (Louver Shown) Optional pencil proof, heavy duty, mechanically fastens to fan coil. CEILING UNIT Speed control switch and wiring diagram shipped loose inside each unit. All ceiling models come equipped with a hinged front panel and safety chain(s) for safe and easy maintenance. HIDEAWAY UNIT Made of 8gauge galvannealed corrosion resistant steel. Flanged outlet for duct connection. CONSTANT CABINET DIMENSIONS Cabinet depth and height dimension are a standard on all unit sizes per model. Only the length changes with the unit size. WALL SEAL All fully recessed and partially recessed units are provided with a standard wall seal kit. Optional wall seal kit can be provided with other models. 5
8 FACTORY ASSEMBLED OPTIONS COLOR All Rittling Fan Coil Units come with an ivory powder paint finish. Additional standard colors are available. Furnish a color chip for custom color. CABINET Construction: 4 gauge front panel only and complete 4 gauge cabinet construction available for heavyduty applications. End Pockets: 6" Left hand and/or right hand end pocket extensions allow additional room for the mounting of valve packages and are required for 4pipe valve packages containing 3way control valves. Access doors are located in standard position. COILS High Capacity Chilled Water: 4row or 3row (Low Profile) cooling coil available to provide higher cooling ouput. Hot Water: Row hot water heating coil used in 4pipe systems. Steam: Row steam heating coil also available to provide high heat output for use with 20 psig steam maximum. Automatic Air Vent: In lieu of manual air vent. SECURITY Security Access Doors: Tamper proof fasteners are available with an allen head style. A special tool is required to open the doors. GRILLES Steel Bar Grille: Welded steel, epoxy painted, pencilproof bar grille. Double Deflection Grille Discharge: Aluminum framed grille with adjustable blades in two directions. (FF200, FS 200, FW260, FC360, FC400 models only) DRAIN PAN 304 Stainless steel. Options & Accessory Equipment FILTERS Cleanable Aluminum Mesh: " Aluminum mesh filter complete with aluminum frame and drain holes. LEVELING LEGS Leveling legs are available to adjust pitch on uneven floors. MOTORS Alternate Voltage: 208V, 240V and 277V supply voltage converted to 20V/60/ by transformer. High Static Motor: 550 RPM, 20V/60/ permanent split capacitor motor. Standard airflow maintained with external static pressure of up to 0.2" water column. Power Supply Cord: Heavyduty grounded plugin cord conveniently connects unit to standard wall outlet. Motor Quick Connect: Molex connectors are provided on each motor for ease of removal, located at motor. Disconnect Switch: 20V/60/ (5A), 277V/60/ (5A), 277V/60/ (30A) or 600V/60/3 (40A). Installed on face of electrical junction box. Located in electrical end pocket of vertical units and on electrical control side of horizontal units. Motor Starter: 20V/60Hz/PH, Manual reset motor starter with toggle switch and thermal overload protection. Unit can only be restarted by resetting toggle switch. Starter comes with an overload protection set at 25% of full load current. Located in electrical end pocket of vertical units and on electrical control side of horizontal units. Not available with electric heat. Contact factory for alternate voltages. GFCI: 20V/60Hz/PH, ground fault circuit interrupter, unit mounted, field wired. LEVEL SWITCH Clipped to horizontal drain pan or vertical auxiliary drain pan. 20V or 24V power. Deenergerizes fan upon rising water level. DAMPERS 025% Manual Outside Air Damper:Includes damper, manually adjustable through return air opening. Located in bottom of floor mounted units only. 025% Motorized Outside Air Damper: Adjustable from 0% to 25% outside air. Furnished with a 20V/60Hz/PH synchronous motor that is wired to the blower to automatically open the damper when the fan starts. When the power is off or interrupted, the damper returns to the closed position. Located in bottom of floor mounted units only. 6
9 Options & Accessory Equipment CONTROLS Valve Control By Air Temperature: Remote or unit mounted monitors air temperature in the space for heating and cooling applications. When the temperature rises above set point during cooling and drops below set point during heating, the cooling or heating valve will open. When the space temperature is satisfied, the valve will close. The blower runs continuously based on 3 speed switch positions. A remote temperature sensor is offered with all options for remote mounting in space or in return air stream. Fan Control By Air Temperature: Remote or unit mounted monitors air temperature in the space for heating and cooling applications. When the temperature rises above setpoint during cooling and drops below set point during heating, the cooling or heating valve will open and the fan will turn on. When the space temperature is satisfied, the valve will close, and the fan will turn off. A remote temperature sensor is offered with all options for remote mounting in space or in return air stream. Valve Control By Water Temperature: Aquastat monitors the temperature of water leaving the coil. It will delay opening the cooling / heating valve until a predetermined water temperature is reached. Note: Low profile units require valve or fan control to minimize potential of condensate dripping from coil into blower housings when fan is not running. Remote Temperature Sensor: Recommended with all unit mounted s. Operates with all standard Rittling control packages with the removal of JP jumper internal to. 24V Transformer (24VT): 40VA, 20V/24V transformer is unit mounted with 20V prewired, ready for 24V field wiring. 24T3 includes 3speed switch. 24V Relay (24VR): Relay is unit mounted, ready for field wiring. 24R3 includes 3speed switch. 24V Fan Center (24FC): Includes a 40VA, 20V/24V transformer and one () 24V relay. Fan center is unit mounted with 20V prewired, ready for 24V field wiring. 24F3 includes 3speed switch. 24V Relay Pack (24RP): Includes a 40VA, 20V/24V transformer and three (3) 24V relays. Relay pack is unit mounted with 20V prewired ready for 24V field wiring. See pages 3539 for more information on Control Packages. ELECTRIC HEAT Single stage or intermediate season electric heating. Nickel chromium resistance wire is located between blower and cooling coil. This option also includes grounding terminals, linear limit switch, fusible link(s) and magnetic contactor(s). FIELD ASSEMBLED OPTIONS VALVE PACKAGES: See pages WALL SEAL: Used to recess wall and ceiling models. OPTIONAL KICK SPACE LOUVERED INLET FEATURES LOUVERED KICK SPACE INLET FOR MODELS FF AND FS: The optional kick space louvered inlet provides appealing, continuous closed floor line and hinders build up of dust, papers, or other material. STANDARD OPEN KICK SPACE INLET ON MODELS FF AND FS: Standard kick space inlet opening is shown. 7
10 8 UNIT SIZE Total MBH CERTIFIED Sensible MBH COOLING RATINGS GPM (3Row Main Coil) PD, ft. of H2O HEATING CAPACITY (4Row Main Coil) TABLE A ARI Approved Standard Ratings MBH GPM PD, ft. of H2O Total MBH CERTIFIED Sensible MBH COOLING RATINGS GPM (4Row Main Coil) PD, ft. of H2O MBH HEATING CAPACITY GPM (4Row Main Coil) PD, ft. of H 2O HEATING CAPACITY MBH (Optional Row GPM Reheat Coil) PD, ft. of H2O High CFMSTD Medium Low High CFMHIGH STATIC Medium (@ 0.2" ESP) Low FPI COIL Face Area, ft Coil Connections /2" Cu /2" Cu /2" Cu /2" Cu /2" Cu /2" Cu /2" Cu Quantity 2 2, BLOWER Diameter 5.7" 5.7" 5.7" 5.7" 5.7" 5.7" 5.7" Width 6.3" 7.5" 6.3" 7.5" 6.3", 7.5" 7.5" 7.5" HP /40 /30 /25 /5 /30, /5 /5 /5 Quantity RPM High MOTORSTD RPM Medium RPM Low Amps Power Input Watts HP /2 /2 /0 /7 /2, /7 /7 /7 Quantity RPM High MOTORHIGH STATIC RPM Medium RPM Low Amps Power Input Watts Volts VOLTAGE Hz Phase Number FILTER Length, in Width, in Thickness, in. Height, in CABINET SIZE Length, in Width, in MINIMUM FREE AREA Inlet, in Outlet, in SHIPPING WEIGHT, lbs Notes:. Airflow under dry conditions. Inlet air 7080 F DB. 2. Cooling capacity based on inlet air 80 F DB, 67 F WB, 45 F entering water, 55 F leaving water, high fan speed. 3. Heating capacity based on inlet air 60 F DB, 80 F entering water, 60 F leaving water, high fan speed. 4. Pressure drop (PD) shown in feet of water. 5. Overall length for fully and partially recessed units is (length + 3"). Wall roughin hole dimension to be (length + /8") by 24/8" width. 6. Height dimension applies to floor units only. Wall and ceiling units are 24". Sloped top units are 29/4". 7. All units supplied with replaceable filter with the exception of model FCH. 8. Model FF and FS filters are 7.25" width. Model FCHP filters are (filter length 37/8") by " width.
11 TABLE A2 ARI Approved Standard Ratings Low Profile UNIT SIZE Total MBH CERTIFIED Sensible MBH COOLING RATINGS GPM (2Row Main Coil) PD, ft. of H2O HEATING CAPACITY (2Row Main Coil) MBH GPM PD, ft. of H2O Total MBH COOLING RATINGS Sensible MBH (3Row High GPM Capacity Coil) PD, ft. of H2O MBH HEATING CAPACITY GPM (3Row Main Coil) PD, ft. of H 2O HEATING CAPACITY MBH (Optional Row GPM Heating Coil) PD, ft. of H2O High CFMSTD Medium Low High CFMHIGH CAPACITY Medium Low FPI COIL Face Area, ft Coil Connections /2" Cu /2" Cu /2" Cu /2" Cu Quantity 2 2 BLOWER Diameter 5.7" 5.7" 5.7" 5.7" Width 6.3" 7.5" 6.3" 7.5" HP /2 /2 /0 /7 Quantity RPM High MOTOR RPM Medium RPM Low Amps Power Input Watts Volts VOLTAGE Hz Phase Number FILTER Length, in Width, in Thickness, in. Height, in CABINET SIZE Length, in Width, in MINIMUM FREE AREA Inlet, in Outlet, in SHIPPING WEIGHT, lbs Notes:. Airflow under dry conditions. Inlet air 7080 F DB. 2. Cooling capacity based on inlet air 80 F DB, 67 F WB, 45 F entering water, 55 F leaving water, high fan speed. 3. Heating capacity based on inlet air 60 F DB, 80 F entering water, 60 F leaving water, high fan speed. 4. Pressure drop (PD) shown in feet of water. 9
12 TABLE B Fan Coil Cooling Capacities 3 Row Unit Size F DB/60 F WB Entering Air 72 F DB/62 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/64 F WB Entering Air 75 F DB/6 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
13 TABLE B Fan Coil Cooling Capacities 3 Row Unit Size F DB/63 F WB Entering Air 75 F DB/64 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/64 F WB Entering Air 78 F DB/65 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
14 TABLE B Fan Coil Cooling Capacities 3 Row Unit Size F DB/68 F WB Entering Air 80 F DB/64 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/67 F WB Entering Air 80 F DB/70 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
15 TABLE B Fan Coil Cooling Capacities 3 Row Unit Size F DB/63 F WB Entering Air 75 F DB/64 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/64 F WB Entering Air 78 F DB/65 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
16 TABLE B Fan Coil Cooling Capacities 3 Row Unit Size Unit Size F DB/7 F WB Entering Air 85 F DB/74 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU TABLE B2 Fan Coil Cooling Capacities 4 Row 72 F DB/60 F WB Entering Air 72 F DB/62 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
17 TABLE B2 Fan Coil Cooling Capacities 4 Row Unit Size F DB/64 F WB Entering Air 75 F DB/6 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/63 F WB Entering Air 75 F DB/64 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
18 TABLE B2 Fan Coil Cooling Capacities 4 Row Unit Size F DB/64 F WB Entering Air 78 F DB/65 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/68 F WB Entering Air 80 F DB/64 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
19 TABLE B2 Fan Coil Cooling Capacities 4 Row Unit Size F DB/67 F WB Entering Air 80 F DB/70 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/67 F WB Entering Air 82 F DB/69 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
20 TABLE B2 Fan Coil Cooling Capacities 4 Row Unit Size F DB/72 F WB Entering Air 85 F DB/67 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/72 F WB Entering Air 85 F DB/67 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
21 TABLE B3 Fan Coil Cooling Capacities Low Profile Unit Size F DB/60 F WB Entering Air 72 F DB/62 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/64 F WB Entering Air 75 F DB/6 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/64 F WB Entering Air 75 F DB/6 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
22 TABLE B3 Fan Coil Cooling Capacities Low Profile Unit Size F DB/64 F WB Entering Air 78 F DB/65 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/68 F WB Entering Air 80 F DB/64 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/67 F WB Entering Air 80 F DB/70 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
23 TABLE B3 Fan Coil Cooling Capacities Low Profile Unit Size F DB/67 F WB Entering Air 82 F DB/69 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/72 F WB Entering Air 85 F DB/67 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU Unit Size F DB/7 F WB Entering Air 85 F DB/74 F WB Entering Air GPM 40 F Entering Water 45 F Entering Water 50 F Entering Water 40 F Entering Water 45 F Entering Water 50 F Entering Water DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU DT TBTU SBTU
24 TABLE C Fan Coil Hot Water Heating Capacities UNIT SIZE GPM PD HIGH FAN SPEED LOW FAN SPEED CFM BTU/HR WTD LAT CFM BTU/HR WTD LAT Notes: PD Pressure Drop in Ft of Water. Includes PD, Across Coil Only. WTD Water Temperature Drop in F LAT Leaving Air Temperature in F Above capacities based on: Entering Water Temperature 80 F Entering Air Temperature 60 F Row Coil Standard Motor 22
25 TABLE C2 Row Hot Water Heating Capacities UNIT SIZE GPM PD HIGH FAN SPEED LOW FAN SPEED CFM BTU/HR WTD LAT CFM BTU/HR WTD LAT Notes: PD Pressure Drop in Ft of Water. Includes PD, Across Coil Only. WTD Water Temperature Drop in F LAT Leaving Air Temperature in F Above capacities based on: Entering Water Temperature 80 F Entering Air Temperature 60 F 23
26 Fan Coil Steam Heating Capacities TABLE D HIGH FAN SPEED LOW FAN SPEED UNIT SIZE CFM BTU/HR COND. (LB/HR) LAT ( F) CFM BTU/HR COND. (LB/HR) LAT ( F) TABLE D2 ROW COIL HIGH FAN SPEED LOW FAN SPEED UNIT SIZE CFM BTU/HR COND. (LB/HR) COND. LAT ( F) CFM BTU/HR LAT ( F) (LB/HR) Above capacities based on: Entering Steam 2 PSIG Entering Air Temperature 60 F Row Coil Standard Motor TABLE E STEAM CORRECTION FACTORS BASED ON 2 LB. STEAM AND 60 F EAT STEAM PRESSURE PSIG SATURATED STEAM TEMPERATURE ( F) STEAM LATENT HEAT (BTU/LB) ENTERING AIR TEMPERATURE ( F) To obtain capacities at conditions other than at 60 F entering air, multiply MBH from the Steam Heating Capacities table by appropriate correction factor. EXAMPLE: SOLUTION: Determine capacity of size 04 FF unit at 5 PSI steam, 50 F entering air. Capacity of size 04 at 2 psi steam, 60 F entering air, from Table D is 32. MBH. Correction factor for 5 psi steam, 50 F entering air from Table E is x.2 = 36.0 MBH at 5 PSI steam and 50 F entering air. 24
27 . Based on job requirements, select type of cooling (2 pipe or 4 pipe system). 2. Determine the minimum total cooling capacity (BTU/hr) required. If needed, determine the minimum sensible cooling required. 3. If applicable, apply (divide by) the altitude and glycol solution correction factor. 4. Select the suitable unit from Table B or B2 that will provide the necessary cooling capacities based on the available conditions such as entering fluid temperature, entering air temperature and fluid temperature drop. 5. If 4 pipe system is involved, determine the minimum heating capacity needed. If the actual application conditions are different than the rated conditions, convert the heating capacity to the rated conditions by applying (divide by) the conversion factors from Tables F and G. 6. Select the suitable unit from Table C or C2 that will provide the necessary heating capacities based on the available conditions such as entering fluid temperature, entering air temperature and fluid temperature drop. TABLE F ALTITUDE FACTOR Elevation Above Correction Factor Sea Level (Feet) Total Sensible TABLE H GPM Fan Coil Selection Procedure EXAMPLE COOLING COIL PRESSURE DROP, ft of WATER Cooling Load: EWT 40 F EAT 75 F DB/64 F WB Total Cooling Load,300 BTUH Equipment Location Altitude 5000 Above Sea Level Glycol Solution 20% Ethylene Glycol Corrected Total Cooling Load = Total Cooling Load / (Altitude Factor x Glycol Factor*) =,300 / (.04 x 0.89*) = 2,208 BTUH Sensible Cooling Load 7,000 BTUH Corrected Sensible Cooling Load = Sensible Cooling Load / (Altitude Factor x Glycol Factor*) = 7,000 / (0.94 x 0.94*) = 7,922 BTUH *Cooling Glycol Factors can be obtained from factory for each specific application. Table B, pg., shows selection of size 03 with 2,2 total BTU/hr and 7,993 sensible BTU at approximately 2.5 GPM, sufficient for the noted application. Heating Load: Total Heating Load 4,600 BTUH EWT/EAT 60 F/50 F (0.9 correction factor) Water Temperature Drop 30 F (0.96 correction factor) Corrected Heating Load = Total Heating Load / (Entering Water/Air Temperature Correction Factor x Water Temperature Drop Correction Factor) = 4,600 / (0.9 x 0.96) = 6,700 BTUH Table C, pg.22, shows selection of size 03 with 6783 BTU/hr at 2.0 GPM, sufficient for the noted application. TABLE G % Glycol Solution GLYCOL FACTOR Total Cooling Sensible Cooling Heating EG PG EG PG EG PG Check with factory as capacities may be reduced by up to 40% TABLE H2 LOW PROFILE GPM COOLING COIL PRESSURE DROP, ft of WATER
28 Hot Water Calculations & Correction Factors TABLE I HOT WATER CORRECTION FACTORS BASED ON 80 F ENTERING WATER, 60 F ENTERING AIR, 20 F TEMPERATURE DROP Entering Air, F ENTERING WATER TEMPERATURE WITH 20 F TEMPERATURE DROP TABLE I2 LOW PROFILE HOT WATER CORRECTION FACTORS BASED ON 80 F ENTERING WATER, 60 F ENTERING AIR, 20 F TEMPERATURE DROP Entering Air, F ENTERING WATER TEMPERATURE WITH 20 F TEMPERATURE DROP
29 Hot Water Calculations & Correction Factors TABLE J HOT WATER BTU, GPM AND PRESSURE LOSS FACTORS BASED ON STANDARD CONDITIONS OF 80 F ENTERING WATER, 60 F ENTERING AIR, 20 F TEMPERATURE DROP USE FACTORS FROM THIS TABLE TO OBTAIN APPROXIMATE RESULTS TEMPERATURE DROP, F To obtain BTU for other water temperature drops, multiply basic rating by applicable factor To obtain GPM for other water temperature drops, multiply basic rating by applicable factor To obtain pressure loss (ft. of water) for other water temperature drops, multiply basic loss at 20 F drop by factor TABLE J2 LOW PROFILE HOT WATER BTU, GPM AND PRESSURE LOSS FACTORS BASED ON STANDARD CONDITIONS OF 80 F ENTERING WATER, 60 F ENTERING AIR, 20 F TEMPERATURE DROP USE FACTORS FROM THIS TABLE TO OBTAIN APPROXIMATE RESULTS 0 5 TEMPERATURE DROP, F To obtain BTU for other water temperature drops, multiply basic rating by applicable factor To obtain GPM for other water temperature drops, multiply basic rating by applicable factor To obtain pressure loss (ft. of water) for other water temperature drops, multiply basic loss at 20 F drop by factor TO OBTAIN APPROXIMATE FANCOIL BTU HEATING CAPACITY AT OTHER THAN THOSE IN THE BASIC TABLE (TABLE C or C2), MULTIPLY THE BASIC RATING (TABLE A or A2) BY THE APPROPRIATE CORRECTION FACTORS FROM THE ABOVE TABLES. Examples: 20 F TD. 80 F EWT and 60 F EAT : Read output directly from Table A or A2 Heating Capacity Table on pages 8 or EWT and /or EAT above or below Standard : Multiply output from Table A or A2 Heating Capacity by factor from Table J or J2 above. OTHER TD 3. TD range from 0 F to 60 F : Multiply output obtained in and 2 above by factor from Table J or J2 above. GPM AT OTHER TD 4. TD range from 0 F to 60 F : Multiply unit GPM for 20 F TD by factor from Table J or J2 above. PRESSURE LOSS AT OTHER TD 5. TD range from 0 F to 60 F : Multiply unit PD for 20 F TD by factor from Table J or J2 above. 27
30 Airflow Correction Factors TABLE K UNIT AIR FLOW AT FREE DELIVERY AND EXTERNAL STATIC PRESSURES STD MOTORS UNIT SIZE CFM FAN SPEED HIGH MED LOW HIGH MED LOW HIGH MED LOW HIGH MED LOW HIGH MED LOW HIGH MED LOW HIGH MED LOW CFM AT EXTERNAL STATIC PRESSURE FOR UNITS WITH " AIR OUTLET DUCT COLLAR NOTES: To obtain CFM at external static pressure for units with " air outlet duct collar (no outlet grille), multiply high speed CFM rating listed in the table above by the appropriate factor. EXAMPLE: Determine high speed CFM at 0.20" external static pressure for size 08 unit. SOLUTION: High Speed CFM = 840 Correction Factor = x 0.67 = 563 CFM at 0.20" external static pressure 28
31 Airflow Correction Factors TABLE L UNIT AIR FLOW AT FREE DELIVERY AND EXTERNAL STATIC PRESSURES HIGH STATIC MOTORS UNIT SIZE CFM FAN SPEED HIGH MED LOW HIGH MED LOW HIGH MED LOW HIGH MED LOW HIGH MED LOW HIGH MED LOW HIGH MED LOW CFM AT EXTERNAL STATIC PRESSURE FOR UNITS WITH " AIR OUTLET DUCT COLLAR NOTES: Correction factors in the chart above apply to units with " air outlet duct collars, when equipped with optional high static PSC motors. To obtain CFM at external static pressure for units with " air outlet duct collars and high static PSC motors, multiply high speed CFM ratings from the table above by the appropriate factors. EXAMPLE: Determine high speed CFM at 0.30" external static pressure for size 06 unit with high static motor. SOLUTION: High Speed CFM = 660 Correction Factor = x 0.93 = 64 CFM at 0.30" external static pressure 29
32 Valve Packages General Data FIELD MOUNTED PACKAGES Rittling hydronic fan coil units have standard valve packages available as a factory built assembly and fieldinstalled option for the main cooling coil and optional heating coil. All valve packages are manufactured within strict tolerances and are hydrostatically tested for leaks. Valve packages are shipped loose for field assembly to ensure a leak free system as factory mounted valve packages often become damaged during shipment. All cooling piping and components are located directly above the auxiliary drain pan to allow condensate to be captured and properly drained. Insulation of the factory valve package is not required. However, all field connections downstream of the valve package should be insulated to prevent condensation from missing the auxiliary drain pan. Valve Package Components Rittling valve packages consist of a variety of components and selection of each combination is dependent upon the application. The following sections provide a detailed description of each of the components. Following this section are additional schematic illustrations and mechanical specifications and photos. Piping System/Placement Valve packages are available for two or fourpipe systems with left and/or right hand connections. The heating and cooling connections can be located on the same or opposite sides of the unit in fourpipe systems. All coil connections are left hand as standard unless specified differently. Interconnecting Piping Interconnecting piping refers to the copper piping which is attached to the coil connections and to which all other components (i.e. control valves, end valves, circuit setters, etc.) are attached. Piping is ½" nominal (5/8" OD) copper. Deluxe or Basic Valve Packages The basic valve package includes only the main components of the valve package (i.e. interconnecting piping, control valves, and end valves). The deluxe valve packages also include unions at the coil connections and a strainer on the supply water pipe along with the basic components. All valve package components are solder end connections. Unions The unions are cast bronze construction and close with a minimum amount of effort. Used for quick connect and disconnect of valve package components to minimize required field labor during servicing of the unit. Strainer The Ytype strainer body is constructed of brass with a 6 mesh 304 stainless steel screen. Used for removal of small particles from the water supply pipe during normal system operation. The strainer helps protect the coil and minimizes the chance of control valves clogging. Screens should be regularly removed and cleaned as part of a routine maintenance schedule. Balance Valves The balance valve body is constructed of bronze and is used to balance hydronic circuits. END VALVES Each basic and deluxe valve package includes a ball valve for the supply water pipe and one of the following end valves on the return water pipe; ball valve, manual circuit setter, or automatic circuit setter. These valves serve as the field connection points on all of the Rittling valve packages. Consult the factory for inclusion of the other types of valves as end valves. Ball Valves Ball valves, also known as end valves, allow the unit to be cut off for servicing purposes. They have a low resistance to water flow, operate easily, and are often used for water balancing. These valves have a compact handle that rotates 90 degrees to a fully open position. The valve body is forged brass and the ball is polished brass with virgin Teflon seats and seals. Ball valves are available as end valves on both the supply and return water pipes. Manual Circuit Setter A manual circuit setter, also known as a manual flow control valve, acts as both a flow setting device and a stop valve, taking the place of a ball valve. This valve allows water flow through the fan coil unit and can be set quickly and accurately. The manual circuit setter includes two measuring ports in the valve body to be used for pressure drop measurements during system balancing. This pressure drop can be compared to factory supplied curves showing the corresponding flow rate. This valve shall have a 360 degree turn handwheel with memory feature including a locking feature for tamperproof setting. Automatic Circuit Setter An automatic circuit setter is an automatic flow control device that includes a ball valve cast in the valve body and is located on the return water pipe. The automatic circuit setter consists of a stainless steel/brass flow cartridge and a contoured orifice plate. As the pressure drop increases, the flow cartridge will move into the contoured orifice plate to decrease the flow. This flexing action provides a constant flow, independent of pressure (280 psi), and makes it difficult to clog and resistant to cavitation damage. This valve sets flow through the coil without any action required by a system balancer. The automatic circuit setter includes two measuring ports in the valve body to be used for pressure drop and temperature measurements. 30
33 Valve Packages General Data CONTROL VALVES Valve packages are available with or without control valves. All control valve packages are shipped loose for field mounting and wiring. 2Way On/Off Valves These ½" valves are normally closed to the coil as standard and will isolate the coil during a loss of power. Normally open valves are also available upon request. Upon response to a signal from the controller, the valve will be either fully open or fully closed. These valves are located in the water supply pipe, have a c v of 3.5, and close off ΔP of 20 psi. A means of relieving pump head pressure must be accounted for when twoway valves are selected, most notably when used in combination with automatic changeover. 3Way On/Off Valves These ½" valves are normally closed to the coil as standard and will isolate the coil during a loss of power. Normally open configurations are simply achieved by turning the valve around. Upon response to a signal from the controller, the valve will be either fully open allowing full flow to the coil or fully closed to the coil diverting full flow to the bypass line. All 3way valve configurations include a balance fitting in the bypass line to allow proper flow balancing. These valves are located in the water supply pipe, have a c v of 4.0, and close off ΔP of 20 psi. 2Way Modulating Valves These ½", 24V valves modulate the flow of water (000%) through the coil in response to a signal from the controller and are normally closed to the coil as standard. Normally open valves are also available upon request. All modulating valves are threewire floating equal percentage valves, designed for precise temperature control. All valves feature a magnetic clutch to extend the life of the motor and gear train, manual operating lever/position indicator facilitates field setup, and easy to use lever terminal blocks. These valves are located in the water supply pipe, have a c v of 4.0, and close off ΔP of 50 psi. A means of relieving pump head pressure must be accounted for when twoway valves are selected, most notably when used in combination with automatic changeover. 3Way Modulating Valves These ½", 24V valves modulate the flow of water (000%) through the coil in response to a signal from the controller and are normally closed to the coil as standard. Normally open configurations are simply achieved by turning the valve around. 3Way valves allow the water supply from the water supply pipe to mix with bypass water from the bypass line. This mixture exits through the supply water pipe to the coil. All modulating valves are threewire floating equal percentage valves, designed for precise temperature control. All valves feature a magnetic clutch to extend the life of the motor and gear train, manual operating lever/position indicator facilitates field setup, and easy to use lever terminal blocks. These valves are located in the water supply pipe, have a c v of 4.0, and close off ΔP of 50 psi. Please contact the factory regarding any special valve requirements. Two pipe deluxe package (VD8E) with 3way on/off control valve, manual circuit setter, strainer, balance valve, ball valves, and unions shown. Field mounted and wired. 3
34 * * Fan Coil Valve Packages (PreAssembled Packages, Shipped Loose For Field Mounting) * * * * * Not Available for 4Pipe Low Profile Units 32
35 ** ** Fan Coil Valve Packages (PreAssembled Packages, Shipped Loose For Field Mounting) ** ** ** ** ** Not available for Low Profile Units 33
36 Valve Packages Component Mechanical Specifications BALL VALVE Part Material Body Forged Brass Ball Brass, Chrome Plated Seat PTFE Stem Brass Seals Viton Temperature 325 F Max Working Pressure 600 psi STRAINER & BALL VALVE WITH UNION Part Material Body Forged Brass Ball Brass/ Chrome Plated Seat PTFE Stem Brass Seals Viton Screen 304 Stainless Steel (20 mesh) Temperature 325 F Max Working Pressure 600 psi CONTROL VALVE Part Material Body Forged Brass Stem Nickel Plated/ Chrome Plated Brass Seat Brass Paddle/Plug Buna N (On/Off) High Temperature Thermoplastic/Rubber (Modulating) Actuator Stainless Steel Base Plate, Aluminum Cover (On/Off) High Temperature Plastic (Modulating) Temperature 200 F Max Working Pressure 300 psi AUTOMATIC CIRCUIT SETTER & BALL VALVE Part Material Body Forged Brass Ball Brass, Chrome Plated Flow Cartridge Stainless Steel / Brass Seals Viton Ball Seal PTFE Temperature 325 F Max Working Pressure 600 psi UNION Part Material Nut Brass Body Brass Temperature 325 F Max. Working Pressure 600 psi BALANCE VALVE Part Material Body Bronze ORing EPDM MANUAL CIRCUIT SETTER Part Material Body Nonferrous Copper Alloy Spindle Nonferrous Copper Alloy Seat Bronze Probe Seals EPDM Handwheel Red Mylar Temperature 250 F Max Working Pressure 250 psi 34
37 20 Volt Control Packages ELECTRONIC ONOFF VALVE/THERMOSTAT CONTROL PACKAGES TWO PIPE CONTROL FAN CYCLED OR FAN/VALVE CYCLED Rittling provides a control system that includes a, relay(s), manually operated 3 speed fan switch and changeover switch (when required). For fan cycle operation, the cycles the fan from the selected speed to off. No control valve is provided in this operation. For fan/valve cycle operation, the cycles the fan and control valve. The fan runs intermittently unless the speed control switch is in the off position. Valve is not included in the control package price. NOTE: A means of relieving pump head pressure must be acccounted for when twoway valves are used with an automatic package. PACKAGE NUMBER THERMOSTAT DESCRIPTION FAN MOTOR SPEED SWITCH LOCATION CHANGEOVER SWITCH 2F0C 2F0D 2F0E 2F0F 2F0G 2F0H On/off system switch and 3 speed fan control but no changeover Manual changeover, heat/off/ cool system switch and 3 speed fan control Auto changeover, on/off system switch and 3 speed fan control Unit mounted, integral to Wall mounted, integral to Unit mounted, integral to Wall mounted, integral to Unit mounted, integral to Wall mounted, integral to No No Yes Yes Yes Yes NOTE: The fan cycles with demand for heating or cooling, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. TWO PIPE CONTROL VALVE CYCLED Rittling provides a control system that includes a, manually operated 3 speed fan switch and changeover switch (when required). The cycles the electric control valve. The fan runs continuously. Valve is not included in the control package price. NOTE: A means of relieving pump head pressure must be acccounted for when twoway valves are used with an automatic package. PACKAGE NUMBER THERMOSTAT DESCRIPTION FAN MOTOR SPEED SWITCH LOCATION CHANGEOVER SWITCH 2V0C 2V0D On/off system switch and 3 speed fan control but no changeover Unit mounted, integral to Wall mounted, integral to No No 2V0E 2V0F Manual changeover, heat/off/ cool system switch and 3 speed fan control Unit mounted, integral to Wall mounted, integral to Yes Yes 2V0G 2V0H Auto changeover, on/off system switch and 3 speed fan control Unit mounted, integral to Wall mounted, integral to Yes Yes NOTE: The fan cycles with demand for heating or cooling, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 35
38 20 Volt Control Packages ELECTRONIC ONOFF VALVE/THERMOSTAT CONTROL PACKAGES FOUR PIPE CONTROL FAN CYCLED OR FAN/VALVE CYCLED Rittling provides a control system that includes a, relay(s) and manually operated 3 speed fan switch. For fan cycle operation, the cycles the fan from the selected speed to off. No control valve is provided in this operation. For fan/valve cycle operation, the cycles the fan and control valve. The fan runs intermittently unless the speed control switch is in the off position. Valves are not included in the control package price. NOTE: A means of relieving pump head pressure must be acccounted for when twoway valves are used with an automatic package. PACKAGE NUMBER THERMOSTAT DESCRIPTION FAN MOTOR SPEED SWITCH LOCATION 4F0B 4F0C 4F0D 4F0E Auto changeover, on/off system switch and 3 speed fan control Manual changeover, heat/off/ cool system switch and 3 speed fan control Unit mounted, integral to Wall mounted, integral to Unit mounted, integral to Wall mounted, integral to NOTE: The fan cycles with demand for heating or cooling, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. FOUR PIPE CONTROL VALVE CYCLED Rittling provides a control system that includes a and manually operated 3 speed fan switch. The cycles the electric control valve. The fan runs continuously. Valves are not included in the control package price. NOTE: A means of relieving pump head pressure must be acccounted for when twoway valves are used with an automatic package. PACKAGE NUMBER THERMOSTAT DESCRIPTION FAN MOTOR SPEED SWITCH LOCATION 4V0B 4V0C 4V0D 4V0E Auto changeover, on/off system switch and 3 speed fan control Manual changeover, heat/off/ cool system switch and 3 speed fan control Unit mounted, integral to Wall mounted, integral to Unit mounted, integral to Wall mounted, integral to NOTE: Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 36
39 24 Volt Control Packages ELECTRONIC ONOFF VALVE/THERMOSTAT CONTROL PACKAGES TWO PIPE CONTROL FAN CYCLED OR FAN/VALVE CYCLED Rittling provides a control system that includes a factory supplied and installed 20V/24V40VAC control transformer, manually operated 3 speed fan switch, relay(s), and changeover switch (when required). For fan cycle operation, the cycles the fan from the selected speed to off. No control valve is provided in this operation. For fan/valve cycle operation, the cycles the fan and control valve. The fan runs intermittently unless the speed control switch is in the off position. Valve is not included in the control package price. NOTE: A means of relieving pump head pressure must be acccounted for when twoway valves are used with an automatic package. 24V POWER ONLY 2F4J 2F4K On/off system switch and 24V 3 speed fan control but no changeover Unit mounted, integral to Wall mounted, integral to No No 2F4L 2F4M Manual changeover, heat/off/ cool system switch and 24V 3 speed fan control Unit mounted, integral to Wall mounted, integral to Yes Yes 2F4N 2F4P Auto changeover, on/off system switch and 24V 3 speed fan control Unit mounted, integral to Wall mounted, integral to Yes Yes NOTE: (3) additional 24V relays are included for a completely low voltage control package option. The fan cycles with demand for heating or cooling, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 24V POWER TO THERMOSTAT WITH 20V POWER FROM THERMOSTAT TO MOTOR 2F4C 2F4D 2F4E 2F4F 2F4G 2F4H On/off system switch and 20V 3 speed fan control but no changeover Manual changeover, heat/off/ cool system switch and 20V 3 speed fan control Auto changeover, on/off system switch and 20V 3 speed fan control Unit mounted, integral to Wall mounted, integral to Unit mounted, integral to Wall mounted, integral to Unit mounted, integral to Wall mounted, integral to No No Yes Yes Yes Yes NOTE: The fan cycles with demand for heating or cooling, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 37
40 24 Volt Control Packages ELECTRONIC ONOFF VALVE/THERMOSTAT CONTROL PACKAGES TWO PIPE CONTROL VALVE CYCLED Rittling provides a control system that includes a factory supplied and installed 20V/24V40VAC control transformer, manually operated 3 speed fan switch, and changeover switch (when required). The cycles the electric control valve. The fan runs continuously. Valve is not included in the control package price. NOTE: A means of relieving pump head pressure must be acccounted for when twoway valves are used with an automatic package. 24V POWER TO THERMOSTAT WITH 20V POWER FROM THERMOSTAT TO MOTOR 2V4C On/off system switch and 20V Unit mounted, integral to No 3 speed fan control but no 2V4D changeover Wall mounted, integral to No 2V4E Manual changeover, heat/off/ Unit mounted, integral to Yes cool system switch and 20V 2V4F 3 speed fan control Wall mounted, integral to Yes 2V4G Auto changeover, on/off system Unit mounted, integral to Yes switch and 20V 3 speed fan 2V4H control Wall mounted, integral to Yes NOTE: The fan runs continuously, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. ELECTRONIC ONOFF VALVE/THERMOSTAT CONTROL PACKAGES FOUR PIPE CONTROL FAN CYCLED OR FAN/VALVE CYCLED Rittling provides a control system that includes a factory supplied and installed 20V/24V40VAC control transformer, manually operated 3 speed fan switch, relay(s) and. For fan cycle operation, the cycles the fan from the selected speed to off. No control valve is provided in this operation. For fan/valve cycle operation, the cycles the fan and control valve. The fan runs intermittently unless the speed control switch is in the off position. Valves are not included in the control package price. NOTE: A means of relieving pump head pressure must be acccounted for when twoway valves are used with an automatic package. 24V POWER ONLY PACKAGE NUMBER THERMOSTAT DESCRIPTION FAN MOTOR SPEED SWITCH LOCATION 4F4F 4F4G Auto changeover, on/off system switch and 24V 3 speed fan control Unit mounted, integral to Wall mounted, integral to 4F4H 4F4J Manual changeover, heat/off/ cool system switch and 24V 3 speed fan control Unit mounted, integral to Wall mounted, integral to NOTE: (3) additional 24V relays are included for a completely low voltage control package option. The fan cycles with demand for heating or cooling, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 24V POWER TO THERMOSTAT WITH 20V POWER FROM THERMOSTAT TO MOTOR 4F4B 4F4C 4F4D 4F4E Auto changeover, on/off system switch and 20V 3 speed fan control Manual changeover, heat/off/ cool system switch and 20V 3 speed fan control Unit mounted, integral to Wall mounted, integral to Unit mounted, integral to Wall mounted, integral to NOTE: The fan cycles with demand for heating or cooling, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 38
41 24 Volt Control Packages ELECTRONIC ONOFF VALVE/THERMOSTAT CONTROL PACKAGES FOUR PIPE CONTROL VALVE CYCLED Rittling provides a control system that includes a factory supplied and installed 20V/24V40VAC control transformer, manually operated 3 speed fan switch and. The cycles the electric control valve. The fan runs continuously. Valves are not included in the control package price. NOTE: A means of relieving pump head pressure must be acccounted for when twoway valves are used with an automatic package. 24V POWER TO THERMOSTAT WITH 20V POWER FROM THERMOSTAT TO MOTOR 4V4B 4V4C 4V4D 4V4E Auto changeover, on/off system switch and 20V 3 speed fan control Manual changeover, heat/off/cool system switch and 20V 3 speed fan control Unit mounted, integral to Wall mounted, integral to Unit mounted, integral to Wall mounted, integral to NOTE: The fan runs continuously, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. ELECTRONIC MODULATING VALVE/THERMOSTAT CONTROL PACKAGES TWO PIPE WITH TWOWAY OR THREEWAY MODULATING VALVES Rittling provides a control system that includes a factory supplied and installed 20V/24V40VAC control transformer, manually operated 3 speed fan switch and. Valves and alternate voltage (208, 240 or 277V) power supply options are not included in the control package price. PACKAGE NUMBER THERMOSTAT DESCRIPTION FAN MOTOR SPEED SWITCH LOCATION 2M4A No changeover, system switch or fan control Unit mounted, separate from wall mounted NOTE: Fan runs continuously depending on position of unit mounted 3 speed fan motor switch. ELECTRONIC MODULATING VALVE/THERMOSTAT CONTROL PACKAGES FOUR PIPE WITH TWOWAY OR THREEWAY MODULATING VALVES Rittling provides a control system that includes a factory supplied and installed 20V/24V40VAC control transformer, manually operated 3 speed fan switch and. Valves and alternate voltage (208, 240 or 277V) power supply options are not included in the control package price. PACKAGE NUMBER THERMOSTAT DESCRIPTION FAN MOTOR SPEED SWITCH LOCATION 4M4A 4M4B Manual changeover, heat/off/cool system switch and 3 speed fan control Unit mounted, integral to Wall mounted, integral to 4M4C 4M4D Auto changeover, on/off system switch and 3 speed fan control Unit mounted, integral to Wall mounted, integral to NOTE: For 4M4E, the fan runs continuously depending on position of unit mounted 3 speed fan motor switch. For all others, the fan runs continuously with system switch on, but if the system switch is off, the fan is off. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 39
42 Rittling Standard DDC Control Rittling provides a control system which includes 20V/24V40VAC transformer, manually operated 3 speed fan switch with off position, fan relay and the factory mounting of customer supplied DDC controller. The following information regarding the DDC controls and valves must be provided to Rittling by the DDC manufacturer: (NOTE: The DDC controller is mounted in one end pocket of the fan coil. Therefore, the size of the controller must be no larger than 8" wide x 5" high x 2" deep. CUT SHEETS The cut sheets should include descriptions, mounting instructions, piping schematics and dimensional drawings of the controller, sensors, valves and any component to be field furnished for Rittling to install. PACKING SLIP The packing slip should include model numbers and quantity of each component supplied to Rittling. SCHEDULE The schedule including a listing of unit sizes, model numbers, accessories and tagging instructions should be supplied at the time the order is released. WIRING DIAGRAMS Wiring diagrams should be provided at the time the order is released instructing Rittling how to wire the DDC controller and all accessories to meet the required control operation. Rittling Fan Coil with Electric Heat The electric heating elements are located in the fan coil units in the preheat position. They are located in such a way as to prevent stratification and air bypass for optimum heating efficiency. The electric heating elements are situated between the fan discharge and the cooling coil. This prevents access by room occupants. Cabinets: The fan coil unit is fully insulated to ensure safe, low surface temperatures. Motors: Energy efficient 20V/60Hz/Ph permanent split capacitor motors are standard. A 3 speed motor switch is also provided as a standard. Sub Panel and Electrical Blockoff Plate: All fuses, fuse holder, contactors, and terminal blocks are premounted and prewired to the sub panel. The electrical blockoff plate prevents access to the fan coil end pocket which houses all contactors, field wiring terminals, transformers, relays, etc. Magnetic Contactors: The magnetic contactors are furnished to break all ungrounded conductors. The contactor(s) are located in the end pocket premounted and wired to the sub panel. Grounding: Ring type grounding terminals are provided for each power source. Field Wiring Terminals: Field wiring terminals provide a means to easily connect with a single power source. These are suitable for copper wire and are sized in accordance with National Electrical Code. Control Systems: There are four two pipe cooling with electric heat control systems available. One must be chosen with electric heating unit. Each of these is described in detail on pages Total electric heat Manual cool/heat changeover 2. Total electric heat Automatic cool/heat changeover 3. Intermediate season electric heat Automatic changeover 4. Total electric heat Automatic changeover, field supplied 40
43 Electric Heating Element Construction Information MOUNTING PLATFORM The electric heating elements are mounted to a galvanneal steel plate. This plate is attached to the fan deck by several screws. This allows the motor/fan assembly and electric heat to be removed at the same time for servicing. 2 HEATING ELEMENTS The electric heating element has been designed to handle total electric heating and intermediate seasonal heating requirements. Electric heating elements are designed for 60 hertz/ phase 20, 208, 240 and 277 supply voltages. All electric heating elements are constructed of nickel chromium resistance wire and have a maximum operating temperature of 850 deg F. 3 COIL TERMINALS Coil terminals are constructed of nickel plated steel with ceramic terminal insulators and bracket bushings. 4 LINEAR LIMIT SWITCH The linear limit switch is used as the primary safety protection. It is an automatic reset thermally operated safety device. The switch operates using a long capillary tube which extends the length of the electric heating element. If the capillary senses an excessive temperature (factory preset) at any point, the electric element is deenergized. The break temperature is nonadjustable. The switch automatically reenergizes the electric heating element after the temperature falls to an acceptable range. The electric heating element will be deenergized if the capillary tube is damaged or ruptured. 5 FUSIBLE LINK The fusible link is used as a secondary safety protection device. These cutoffs are manually replaceable with a non conductive thermal pellet holding spring loaded contacts closed. When a preset temperature is exceeded the pellet will melt, allowing the contacts to open and break the circuit. These cutoffs are installed in the power lines of each electric heating element and open in case of failure of the primary safety device. 6 INSULATION High density Armaflex insulation prevents heat from being transmitted to the back of the fan coil unit casing on vertical models. 4
44 Electric Heat Control Packages CHILLED WATER COOLING SINGLE STAGE ELECTRIC HEATING (MANUAL CHANGEOVER) Rittling provides a control system that includes a with changeover control, manually operated 3 speed fan switch, contactor(s), fuse holder with fuses, field wiring terminals, and an electrical blockoff plate. The contactor(s), fuse holder with fuses and field wiring terminals are all premounted and prewired to a sub panel installed in the end pocket of the fan coil. COOLING CYCLE: The manual CoolHeat switch is in the Cool position. When the space temperature rises to the set point, the opens the electric cooling water valve until the space temperature is satisfied. (The cooling water valve is not included.) HEATING CYCLE: The manual CoolHeat switch is in the Heat position. When the space temperature falls to the set point, the energizes the electric heating element(s) until the space temperature is satisfied. FAN OPERATION: A manual fan switch with high, medium and low speeds is integral to the and controls the fan speed and the. The fan motor(s) and are energized in any fan speed position and run continuously. The switch in the off position deenergizes the fan and, closing the electric cooling water valve and breaking the electric heating circuit. THERMOSTAT: All unit mounted s are factory supplied and prewired. All wall mounted s are supplied by the factory and is field wired. PACKAGE NUMBER POWER SUPPLY AND ELECTRIC HEATING ELEMENT EUMA 20 EUMB 208 EUMC 277 EUMD 240 COMPONENT VOLTAGE THERMOSTATIC VALVE CONTROLS MOTOR UNIT MOUNTED VERTICAL UNITS ONLY FAN MOTOR SPEED SWITCH LOCATION Integral to CHANGEOVER SWITCH LOCATION Unit Mounted on EWMA 20 EWMB 208 EWMC 277 EWMG 240 EWMD 20 EWME 208 EWMF 277 EWMH WALL MOUNTED 20 Integral to Wall Mounted on Notes: Electric heat control packages include items shown above. The heating elements, high temperature linear limit switch, and fusible link(s) are not included. See electric heating elements pricing. Transformers required for high voltage motors need to be ordered separately. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 42
45 Electric Heat Control Packages CHILLED WATER COOLING SINGLE STAGE ELECTRIC HEATING (AUTOMATIC CHANGEOVER ON SPACE TEMPERATURE) Rittling provides a control system that includes a, manually operated 3 speed fan switch, contactor(s), fuse holder with fuses, field wiring terminals, and an electrical blockoff plate. The contactor(s), fuse holder with fuses and field wiring terminals are all premounted and prewired to a sub panel installed in the end pocket of the fan coil. COOLING CYCLE: When the space temperature rises to set point, the opens the electric chilled water valve until the space temperature is satisfied. The includes a center dead band which allows the cooling water valve to close and prevent energizing of the electric heating elements. (The cooling water valve is not included.) HEATING CYCLE: When the space temperature falls to the set point, the energizes the electric heating element until the space temperature is satisfied. The includes a center dead band which allows the electric heating element to deenergize and prevents the cooling water valve from opening. FAN OPERATION: A manual fan switch with high, medium and low speeds is integral to the and controls the fan speed and the. The fan motor(s) and are energized in any fan speed position and run continuously. The switch in the off position deenergizes the fan and, closing the electric cooling water valve and breaking the electric heating circuit. THERMOSTAT: All unit mounted s are factory supplied and prewired. All wall mounted s are supplied by the factory and is field wired. PACKAGE NUMBER POWER SUPPLY AND ELECTRIC HEATING ELEMENT EUAA 20 EUAB 208 EUAC 277 EUAG 240 EWAA 20 EWAB 208 EWAC 277 EWAN 240 EWAD 20 EWAE 208 EWAF 277 EWAP 240 COMPONENT VOLTAGE THERMOSTATIC VALVE CONTROLS MOTOR UNIT MOUNTED VERTICAL UNITS ONLY FAN MOTOR SPEED SWITCH LOCATION Integral to WALL MOUNTED 20 Integral to CHANGEOVER SWITCH LOCATION None, uses dead band None, uses dead band Notes: Electric heat control packages include items shown above. The heating elements, high temperature linear limit switch, and fusible link(s) are not included. See electric heating elements pricing. Transformers required for high voltage motors need to be ordered separately. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 43
46 Electric Heat Control Packages CHILLED WATER COOLING HOT WATER HEATING INTERMEDIATE SEASON ELECTRIC HEATING (AUTOMATIC CHANGEOVER ON SUPPLY WATER TEMPERATURE) Rittling provides a control system that includes a, manually operated 3 speed fan switch, changeover switches, contactor(s), fuse holder with fuses, field wiring terminals, and an electrical blockoff plate. The contactor(s), fuse holder with fuses and field wiring terminals are all premounted and prewired to a sub panel installed in the end pocket of the fan coil. COOLING CYCLE: When the space temperature rises to set point, the opens the electric cooling water valve until the space temperature is satisfied. The includes a center dead band which allows the cooling water valve to close and prevent energizing of the electric heating elements. (The cooling water valve is not included.) When the space temperature falls to the set point, the energizes the electric heating element until the space temperature is satisfied. The includes a center dead band to allow both the cooling water valve and the electric heating element to be deenergized when the space temperature is satisfied. A changeover switch is provided on the cold water supply piping to automatically maintain the cooling cycle when chilled water is present. HEATING CYCLE: When the space temperature falls to the set point, the energizes the electric heating element until the space temperature is satisfied. The electric heating element is locked out. A changeover switch is provided on the hot water supply piping to automatically maintain the heating cycle when hot water is present. FAN OPERATION: A manual fan switch with high, medium and low speeds is integral to the and controls the fan speed and the. The fan motor(s) and are energized in any fan speed position and run continuously. The switch in the off position deenergizes the fan and, closing the electric water valve and breaking the electric heating circuit. THERMOSTAT: All unit mounted s are factory supplied and prewired. All wall mounted s are supplied by the factory and is field wired. PACKAGE NUMBER POWER SUPPLY AND ELECTRIC HEATING ELEMENT EUAD 20 EUAE 208 EUAF 277 EUAH 240 EWAG 20 EWAH 208 EWAJ 277 EWAQ 240 EWAK 20 EWAL 208 EWAM 277 EWAR 240 COMPONENT VOLTAGE THERMOSTATIC VALVE CONTROLS MOTOR UNIT MOUNTED VERTICAL UNITS ONLY FAN MOTOR SPEED SWITCH LOCATION Integral to WALL MOUNTED 20 Integral to CHANGEOVER SWITCH LOCATION Aquastat(s) installed on supply line Aquastat(s) installed on supply line Notes: Electric heat control packages include items shown above. The heating elements, high temperature linear limit switch, and fusible link(s) are not included. See electric heating elements pricing. Transformers required for high voltage motors need to be ordered separately. Remote temperature sensors are recommended with all unit mounted s for improved temperature control. 44
47 Electric Heat Control Packages CHILLED WATER COOLING SINGLE STAGE ELECTRIC HEATING (FIELD FURNISHED THERMOSTAT) Rittling provides a control system that includes contactor(s), fuse holder with fuses, field wiring terminals, and an electrical blockoff plate. The contactor(s), fuse holder with fuses and field wiring terminals are all premounted and prewired to a sub panel installed in the end pocket of the fan coil. COOLING CYCLE: On a call for cooling the electric cooling water valve will open. The fan operates continuously. The cooling water valve is not included. HEATING CYCLE: On a call for heating the electric heating elements are energized. The fan operates continuously. FAN OPERATION: A manual fan switch with high, medium and low speeds is integral to the and controls the fan speed and the. The fan motor(s) and are energized in any fan speed position and run continuously. The switch in the off position deenergizes the fan and, closing the electric cooling water valve and breaking the electric heating circuit. THERMOSTAT: Field supplied for wall mounting. PACKAGE NUMBER POWER SUPPLY AND ELECTRIC HEATING ELEMENT ECSA 20 ECSB 208 ECSC 277 ECSD 240 COMPONENT VOLTAGE THERMOSTATIC VALVE CONTROLS MOTOR FAN MOTOR SPEED SWITCH LOCATION Field supplied CHANGEOVER SWITCH LOCATION Field supplied and mounted Notes: Electric heat control packages include items shown above. The heating elements, high temperature linear limit switch, and fusible link(s) are not included. See electric heating elements pricing. Transformers required for high voltage motors need to be ordered separately. 45
48 Electric Heat Capacities Unit Size # of Elements 2 2 KW V/60Hz/Ph MBH Temp. Rise Amps # of Elements KW V/60Hz/Ph 240V/60Hz/Ph 277V/60Hz/Ph MBH Temp. # of Rise Amps Elements KW MBH Temp. # of Rise Amps Elements KW MBH Temp. Rise Amps ELECTRIC HEAT ELEMENT SELECTION Example Selection at Free Delivery Example: Unit size 03, Model FF200 (330 cfm) and a sensible heating loss of 6,000 BTUH. Determine the required heating element KW using 208V incoming voltage. Step : Determine the room sensible heat loss, in BTUH. In this example, the sensible heat loss is 6,000 BTUH. Step 2: Determine the air temperature rise for the unit size selected. Generally, the unit is selected based on cooling requirements. The CFM for each unit size is listed in Table A on page 8. Use the formula below to determine the air temperature rise. T = BTUH T = 6000 T = 6.8 F required CFM x x.085 Step 3: Determine KW and number of heating elements based on air temperature rise required from Electric Heating Capacities Table. Answer: Based on 6.8 F temperature rise required, use a 2.2KW heater element with 208V incoming voltage. 46
49 Dimensions & Data Dimensional Data Unit Size A B C D /6 223/ / /6 283/ /6 343/ / /6 463/ /6 523/6 54 5/ /6 603/ /6 703/ Model FF Dimensional Data COIL E F G H J K L M 3 Row N/A N/A N/A N/A 89/6 3 97/8 45/8 4 Row N/A N/A N/A N/A 89/6 3 97/8 45/8 3/ Row 8 73/4 23/4 45/6 89/6 3 97/8 45/8 4/ Row 93/8 8/6 23/8 5/4 89/6 3 97/8 45/8 Model FW Dimensional Data COIL E F G H J K L M 3 Row N/A N/A N/A N/A 6/8 3 73/8 45/8 4 Row N/A N/A N/A N/A 6/8 3 73/8 45/8 3/ Row 59/6 73/4 95/6 45/6 6/8 3 73/8 45/8 4/ Row 65/6 8/6 20/6 5/4 6/8 3 73/8 45/8 LH PIPING CONNECTIONS SHOWN, RH ELECTRICAL AS STANDARD. PIPING HAND DETERMINED WHEN FACING THE AIR OUTLET. 47
50 Dimensions & Data Dimensional Data Unit Size A B C D /6 223/ / /6 283/ /6 343/ / /6 463/ /6 523/6 54 5/ /6 603/ /6 703/ LH PIPING CONNECTIONS SHOWN, RH ELECTRICAL AS STANDARD. PIPING HAND DETERMINED WHEN FACING THE AIR OUTLET. SIDE VIEW Dimensional Data COIL E F G H J K L M 3 Row N/A N/A N/A N/A 89/6 3 97/8 45/8 4 Row N/A N/A N/A N/A 89/6 3 97/8 45/8 3/ Row 8 73/4 23/4 45/6 89/6 3 97/8 45/8 4/ Row 93/8 8/6 23/8 5/4 89/6 3 97/8 45/8 48
51 Dimensions & Data MODEL "FLF" FRONT VIEW AUXILIARY DRAIN PAN 2 7/6" 5 /2" 8" 3 5/6" NOTE: INLET GRILL STANDARD B 8" ELECTRICAL JUNCTION BOX /2" NPT AUXILIARY DRAIN CONNECTION ALL COIL CONNECTIONS ARE /2" NOMINAL (5/8" OD) ALL SIZES TOP VIEW A C Dimensional Data Unit Size A B C /6 223/6 203/ /6 283/ /6 343/6 29/4 PIPING ACCESS SECTION FAN SPEED ACCESS SECTION 6 /2" 2 /2" /6 463/6 42 LH PIPING CONNECTIONS SHOWN, RH ELECTRICAL AS STANDARD. PIPING HAND DETERMINED WHEN FACING THE AIR OUTLET. SIDE VIEW (STANDARD 2 ROW COOLING ONLY & ROW HOT WATER OR STEAM) SIDE VIEW (HIGH CAPACITY 3 ROW COOLING ONLY & ROW HOT WATER OR STEAM) SUPPLY (COOLING) RETURN 2 /6" 9 /8" 5 /2" RETURN (HOT WATER) SUPPLY (STEAM) (HOT WATER OR STEAM) SUPPLY (HOT WATER) RETURN (STEAM) SUPPLY (COOLING) RETURN 2 /8" 9 /8" 5 9/6" RETURN (HOT WATER) SUPPLY (STEAM) (HOT WATER OR STEAM) SUPPLY (HOT WATER) RETURN (STEAM) 2 7/8" /2" 0 3/8" DRAIN PAN PITCH 2 9/6" 4" 2 5/8" 0 3/8" DRAIN PAN PITCH 3 /6" 6 7/8" 6 7/8" FILTER POSITION FILTER POSITION All listed dimensions are approximate and are subject to change without notice. Modifications to the product specifications must be accepted by HydroAir at its base office. 49
52 Dimensions & Data Dimensional Data Unit Size A B C D E /6 223/ /4 43/ /6 283/ / /6 343/ /4 533/ /6 463/ / /6 523/6 54 5/8 73/ /6 603/ / /6 703/ /6 LH PIPING CONNECTIONS SHOWN, RH ELECTRICAL AS STANDARD. PIPING HAND DETERMINED WHEN FACING THE AIR OUTLET. Dimensional Data COIL F G H J K L M N 3 Row N/A N/A N/A N/A 6/8 3 73/8 45/8 4 Row N/A N/A N/A N/A 6/8 3 73/8 45/8 3/ Row 59/6 73/4 95/6 45/6 6/8 3 73/8 45/8 4/ Row 65/6 8/6 20/6 5/4 6/8 3 73/8 45/8 50
53 Dimensions & Data Dimensional Data Unit Size A B C D E /6 223/ /4 83/ /6 283/ / /6 343/ /4 303/ /6 463/ / /6 523/6 54 5/8 483/ /6 603/ / /6 703/ /6 Dimensional Data COIL F G 3 Row 20/8 75/6 4 Row 85/6 63/6 3/ Row 20/8 75/6 4/ Row 85/6 63/6 LH PIPING CONNECTIONS SHOWN, RH ELECTRICAL AS STANDARD. PIPING HAND DETERMINED WHEN FACING THE AIR OUTLET. 5
54 Dimensions & Data Dimensional Data Unit Size A B C D E F /6 223/ /4 83/6 43/ /6 283/ /6 473/ /6 343/ /4 303/6 533/ /6 463/ /6 653/ /6 523/6 54 5/8 483/6 73/ /6 603/ /6 793/ /6 703/ /6 893/6 Dimensional Data COIL G H 3 Row 20/8 75/6 4 Row 85/6 63/6 3/ Row 20/8 75/6 4/ Row 85/6 63/6 LH PIPING CONNECTIONS SHOWN, RH ELECTRICAL AS STANDARD. PIPING HAND DETERMINED WHEN FACING THE AIR OUTLET. 52
55 Dimensions & Data Dimensional Data Unit Size A B C D E 02 24/8 223/ /8 283/ /8 343/ /8 463/ /8 523/ /8 603/ /8 703/ LH PIPING CONNECTIONS SHOWN, RH ELECTRICAL AS STANDARD. PIPING HAND DETERMINED WHEN FACING THE AIR OUTLET. Dimensional Data COIL F G H J 3/ Row Coil 93/6 57/6 45/6 73/4 4/ Row Coil 209/6 63/6 5/4 8/6 53
56 Dimensions & Data MODEL "FLH" FRONT VIEW B /6" 5 9/6" AUXILIARY DRAIN PAN 6 5/8" INLET OPENING 2 7/6" 3 5/6" A ELECTRICAL JUNCTION BOX /2" NPT AUXILIARY DRAIN CONNECTION ALL COIL CONNECTIONS ARE /2" NOMINAL (5/8" OD) ALL SIZES TOP VIEW Dimensional Data Unit Size A B /6 63/ /6 223/6 5" OUTLET OPENING 2 /2" /6 283/ /6 403/6 LH PIPING CONNECTIONS SHOWN, RH ELECRICAL AS STANDARD. PIPING HAND DETERMINED WHEN FACING THE AIR OUTLET. SIDE VIEW (STANDARD 2ROW COOLING ONLY & ROW HOT WATER OR STEAM) SIDE VIEW (HIGH CAPACITY 3ROW COOLING ONLY & ROW HOT WATER OR STEAM) SUPPLY (COOLING) RETURN 5 /2" 9 /6" 2" RETURN (HOT WATER) SUPPLY (STEAM) (HOT WATER OR STEAM) SUPPLY (HOT WATER) RETURN (STEAM) 2 /6" SUPPLY (COOLING) RETURN 9 /8" 5 9/6" RETURN (HOT WATER) SUPPLY (STEAM) (HOT WATER OR STEAM) SUPPLY (HOT WATER) RETURN (STEAM) 3 /6" 5/8" 0 9/6" DRAIN PAN PITCH 2 /6" 4 3/6" 2 3/6" 0 5/8" DRAIN PAN PITCH 3 3/6" 7 /8" FILTER POSITION 7 /8" FILTER POSITION All listed dimensions are approximate and are subject to change without notice. Modifications to the product specifications must be accepted by HydroAir at its base office. 54
57 Dimensions & Data Dimensional Data Unit Size A B C D 02 25/8 83/6 203/ /8 243/6 263/ /8 303/6 323/ /8 423/6 443/ /8 483/6 503/ /8 563/6 583/ /8 663/6 683/6 76 Coil Connection Locations Coil E 3 Row 45/8 4 Row 5/6 3/ Row 6 4/ Row 7/6 LH PIPING CONNECTIONS SHOWN, RH ELECTRICAL AS STANDARD. PIPING HAND DETERMINED WHEN FACING THE AIR OUTLET. 55
58 Dimensions & Data Dimensional Data Unit Size A B C D 02 2/6 83/6 203/ /6 243/6 263/ /6 303/6 323/ /6 423/6 443/ /6 483/6 503/ /6 563/6 583/ /6 663/6 683/6 76 Dimensional Data Coil E F G H J K 3 Row 7/6 9/4 N/A 7/8 95/6 N/A 4 Row 6/6 8/4 N/A 6/8 95/6 N/A 3/ Row 5/6 77/8 9/4 53/4 75/6 95/6 4/ Row 4/6 67/8 9/4 43/4 65/6 95/6 56
59 Dimensions & Data Dimensional Data Unit Size A B C D /6 223/ / /6 283/ / /6 343/ / /6 463/ / /6 523/ / /6 603/ / /6 703/ /8 57
60 Dimensions & Data /6" Dimensional Data Unit Size A B C /6 225/6 85/ /6 285/6 85/ /6 345/6 235/ /6 465/6 335/8 /6" 58
61 Custom Build Capabilities From Conventional to Cutting Edge Rittling is both a proven supplier and a source for innovation in the hydronic heating and cooling industry. With a Product Development as well as an Application Engineering Department, Rittling manufactures everything from a full line of utility standards to oneofakind curved and mullionstyle enclosures. Based on decades of hard engineering data, Rittling s products represent a triumph of sound design, modern engineering capabilities, and a neverending quest for process improvement. Stateoftheart technology and equipment enable Rittling to lower production costs while delivering the fit and finish you would expect from an ISO 900:2000 supplier. Custom Build Capabilities With an engineering department, the latest 3D solid modeling software, and manufacturing all in the same building, Rittling is able to provide faster production of custombuilt hydronic systems. Rittling has the talent, resources, perserverance, and best of all, the heartfelt desire to solve real problems under real time pressures." David Flowers David Flowers Architects Custom fan coil enclosure 59
62 Architectural / Engineering Specifications BASIC UNIT The contractor shall furnish and install a Rittling fan coil unit as indicated on plans, with required mounting components and accessories. Material shall be manufactured in accordance with Rittling s High Quality Standards and in conformance to ISO 900:2008 standards established and maintained by HydroAir Components Inc. Fancoil unit capacities are certified under Industry Room Fan Coil Air Conditioner Certification Program in accordance with ARI Standard All standard units are ETL certified in the United States and Canada and comply with UL 995 and CSA C22.2 No. 236 requirements. The basic unit shall be supplied with a galvannealed chassis, fan housing(s) & wheel(s), fan deck, motor(s), coil, insulated coil section, 3speed switch, electrical junction box, ABS plastic drain pan, and ABS auxiliary drain pan. A 3speed switch shall be supplied with ceiling units for remote mounting. Mounting for floor units shall be on the side opposite the piping connections. Exposed wiring shall be in flexible conduit on all ceiling hideaway units. Unit mounted electrical components, except GFCI shall be prewired to a junction box. Floor/wall models shall have an externally insulated ABS plastic drain pan (304 SS optional) with plastic hose mounted directly below the coil for continuous condensate removal. Drain surfaces shall be separate from the fan deck assembly, and shall carry condensate to a plastic auxiliary drain pan. Flush mounted quarter turn tamperresistant fastener included as standard Ceiling models shall be supplied with a painted galvanneal steel drain pan with welded corners and exterior insulated with closedcell insulation leaving a smooth, sloped surface for superior drainage. The coil, return bends, and optional valve packages shall be mounted over the drain pan, which acts as the main and auxiliary drain pan. Motors and fans shall be mounted on a removable galvanneal steel fan deck assembly. CABINETS All cabinets shall be of the type as shown on the drawings. Cabinets shall be manufactured from 6 gauge, epoxy powder coated, cold rolled steel panels (4 gauge front panel or full cabinet optional). The entire cooling coil section shall be insulated with ¼" Armaflex, closedcell insulation. Cabinet parts shall be cleaned and phosphatized before painting. The cabinet shall be provided with a standard ivory epoxy powder coating. Optional colors can be selected from the Rittling Color Chart. Custom colors are also available with the submission of a color chip for color match. Cabinets shall have 8" end pockets on both sides of the internal cabinet for installation of electrical equipment or control valves. Floor and wall nonrecessed top panels shall be supplied with two flush, hinged access doors with camlock fasteners (optional tamperresistant fasteners). Adjustable rear mounting brackets shall be supplied with all cabinets to provide necessary adjustments to correct unit alignment during installation on untrue or nonsquare walls, studs, joints, and surfaces. Optional adjustable leveling legs (two on each base leg) are also available. A wall seal assembly shall be provided with all recessed units. The assembly shall provide a finished appearance to the ceiling or wall. 60
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