CAP AHU Installation And Maintenance Instructions Manual

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INSTALLATION AND MAINTENANCE INSTRUCTIONS FOR AHU

HORIZONTAL, MODULAR, VERTICAL AND ROOFTOP UNITS

SIZES FROM 600 CFM TO 9,000 CFM

SIZES FROM 600 TO 4,000 CFM

SIZES FROM 600 CFM TO 9,000 CFM

I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg

COMMERCIAL AIRE PRODUCTS

501 Terminal Road, Fort Worth TX 76106

Tel: 817-624-0820

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Page 1 INSTALLATION AND MAINTENANCE INSTRUCTIONS FOR AHU HORIZONTAL, MODULAR, VERTICAL AND ROOFTOP UNITS SIZES FROM 600 CFM TO 9,000 CFM SIZES FROM 600 TO 4,000 CFM SIZES FROM 600 CFM TO 9,000 CFM I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS...
Page 2: Table Of Contents
Condensate drain Piping Heating Coils, Piping Chilled Water Coils, Piping DX Coils, Piping Prior to Start-Up Operation and Maintenance Limited Warranty Installation Checklist Maintenance Log I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 3: Introduction
Secure all loose-shipped items. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 4 I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 5 I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 6: Safety
Always test lift unit not more than 24 inches to verify the proper center of gravity lift point. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 7: Electrical
Unit may have multiple power supplies. Failure to disconnect power could result in dangerous operation, serious injury, and death or property damage. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 8 I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 9 I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 10 I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 11 I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 12: Cutting Electrical Openings
Supply voltage must be within the minimum/maximum range shown on the unit nameplate, available short circuit current should not exceed the short circuit current rating (SCCR) shown in the unit nameplate. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 13: Start Up List For Duct Heaters
NEC guide lines. Failure to do so may result in shock or death. 5.) Ensure all electrical connections are tight before energizing heater circuit. #10-14 I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 14 77 º F inlet air line is intersected. From point of intersection draw a horizontal line to the left side of the chart to the answer of 800 FPM (Velocity) of air minimum required over the heater. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 15 6) Heater construction or wiring must not be modified or any alterations are preformed to change the heater construction. This would void the listing and warranty of the heater. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 16: Duct Connections
Draw-through units will have a negative static pressure in the drain pan area; this will cause an un-trapped drain to back-up due to air being pulled up through the I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 17: Heating Coils, Piping
Use refrigerant grade copper only. If unit is to be used when installed as the indoor coil of a heat pump, a bypass check valve must be used unless unit is equipped with a TXV which includes bypass and check valve operations. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 18 Only clean ACR tubing should be used. Piping should conform to all the generally accepted practices and codes. The AHU coils are shipped pressurized with nitrogen the copper caps must be punctured to allow the gradual relief of the pressure prior to un-sweating the caps. Immediately couple the tubing to the indoor unit to avoid exposing the coils to moisture.
Page 19 300 fpm from receiver tank to the evaporator to minimize valve induced liquid hammer. Liquid Line Accessories I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 20 This will however require additional refrigerant charge. Circuits with variable capacity scroll compressors require suction riser traps every 15 feet. Suction Line Accessories I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 21 249.8 364.1 513.4 102.9 166.7 253.7 369.1 520.0 105.0 169.6 257.5 374.2 526.6 107.1 172.5 261.4 379.4 533.3 109.2 175.4 265.4 384.6 540.1 I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 22: Prior To Start-Up
Proper pulley alignment and belt tension must be maintained at all times. Speed is reduced by adjusting pulley faces so they are farther apart; speed is increased with faces closer together. Check pulley setscrews and bolts. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 23 Screw in or out the sheave in order to increase or decrease the diameter to the calculated size. Now install the belt around the sheave again. Measure the diameter to verify that the right pitch has been dialed in. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 24 In our example, we would want to make certain that both the fan and motor have the capacity or rating to now handle 3000 cfm. I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 25 Be sure that all keys are in place and that all set screws are torqued properly before starting drive. Check set screws and belt tension after 24 hours of service I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106...
Page 26 I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 27 BLOWER RPM All our AHU are factory set to run at the specified cfm and static pressure, we are not responsible for the design or field given conditions. Contractor is responsible for the final balance and verification of the final installation conditions. Failure to do that, can cause blow off water from the coils and damage to the equipment and system due to excessive face velocity over the cooling coils.
Page 28: Limited Warranty
Commercial Aire (CAP) warrants this product to be free from defects in factory workmanship and material for a term of ONE YEAR under normal use and service. CAP will, at its option, repair or replace any parts that prove to have such defects according to the terms outlined below.
Page 29: Installation Checklist
NO?___ Rotation Checked? YES?___ NO?___ Band Size____________________________ Nameplate Amps_____________________ Actual Amps_________________________ Motor RPM_________________ Blower RPM__________________ Design CFM_________________ Actual CFM________________ Design ESP_________________ Actual ESP________________ I/O MANUAL Horizontal/Modular/Vertical/Rooftop AHU 2015pg COMMERCIAL AIRE PRODUCTS 501 Terminal Road, Fort Worth TX 76106 Tel: 817-624-0820...
Page 30: Maintenance Log
This log must be kept with the unit. It is the responsibility of the owner and/or maintenance/service contractor to document any service, repair or adjustments. CAP Warranty Department is available to advise and provide phone help for proper operation and replacement parts. The responsibility...