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INSTALLATION INSTRUCTIONS
7AH1AE
This manual must be left with the homeowner for future reference.
WARNING
Every working procedure that affects safety means shall
only be carried out by competent persons. This appliance
is not to be used by persons (including children) with
reduced physical, sensory or mental capabilities, or
lack of experience and knowledge, unless they have
been given supervision or instruction concerning use of
the appliance by a person responsible for their safety.
Children should be supervised to ensure they do not
play with the appliance.
CAUTION
Leak Detection System installed. Unit must be powered
except for service.
WARNING
Maximum Altitude of application is 3200m above sea level.
WARNING
Improper installation, adjustment, alteration, service
or maintenance can cause property damage, personal
injury or loss of life. Installation and service must be
performed by a licensed professional HVAC installer or
equivalent, service agency, or the gas supplier.
CAUTION
Servicing shall be performed only as recommended by
the manufacturer.
508441-01
Multi-Position Air Handler
Table of Contents
General Information .......................................................2
Wiring Diagrams ............................................................3
Air Flow – Cooling Blower Speed ..................................4
Blower Data ..................................................................5
Requirements ................................................................6
Unit Dimensions – Upflow Position.................................8
Unit Dimensions – Horizontal Position ..........................9
Installation Clearances ................................................10
Installation ...................................................................10
Sensor / Bracket Installation .........................................13
Condensate Drain.........................................................16
Duct System and Filters .............................................17
Brazing Refrigerant Lines ............................................18
Sealing the Unit ...........................................................21
Electrical Connections .................................................21
Check-out Procedures .................................................23
Operation ....................................................................23
Homeowner Maintenance ............................................24
Repairing or Replacing Cabinet Insulation ..................24
Professional Maintenance ...........................................24
Sensor Maintenance ....................................................25
Modes of Operation ......................................................25
Start Up Test Procedure ...............................................27
Decommissioning ........................................................28
NOTE – This unit is a PARTIAL UNIT AIR CON DITIONER,
complying with PARTIAL UNIT requirements of this Stan-
dard, and must only be connected to other units that have
been confirmed as complying to corre sponding PARTIAL
UNIT requirements of this Standard, UL 60335-2-40/CSA
C22.2 No. 60335-2-40, or UL 1995/CSA C22.2 No 236.
Partial units shall only be connected to an appliance suit-
able for the same refrigerant.
IMPORTANT
The Clean Air Act of 1990 bans the intentional venting of
refrigerant (CFCs, HCFCs and HFCs) as of July 1, 1992.
Approved methods of recovery, recycling or reclaiming
must be followed. Fines and/or incarceration may be
levied for noncompliance.
Ducts connected to an appliance shall not contain a
potential ignition source
Allied Air Enterprises LLC
West Columbia, SC 29170
*P508441-01*
Issue 2423
WARNING
215 Metropolitan Drive
(P) 508441-01
Page 1 of 30
R454B
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Summary of Contents for Allied 7AH1AE
- Page 1 Installation and service must be performed by a licensed professional HVAC installer or Allied Air Enterprises LLC equivalent, service agency, or the gas supplier. 215 Metropolitan Drive West Columbia, SC 29170...
- Page 2 1.32 1.36 General Information Shipping and Packing List The 7AH1AE series air handler with all-aluminum coil is Package 1 of 1 contains: designed for indoor installation in conditioned or uncon- 1 – Assembled air handler unit factory-equipped for upflow ditioned spaces. As shipped, the unit is ready for instal- or horizontal air discharge application (includes upflow and horizontal drain pans and preinstalled air filter).
- Page 3 18 BRN 14 BLK 18 YEL 14 GREEN 18 WHT 14 YEL 18 BLK 6-PIN PLUG RDS CONTROL BOARD FIGURE 1. Typical Wiring Diagram – 7AH1AE Air Handler with Electric Heat – CT 508441-01 Issue 2423 Page 3 of 30...
- Page 4 IMPORTANT Indoor Unit Thermostat RDS Control Board Outdoor Unit Minimum Air Flow when RDS initiates mitigation is factory set at 350 CFM Per Ton. WARNING Electric shock hazard! - Disconnect all power supplies before servicing. Auxiliary Heat Auxiliary Heat Replace all parts and panels before (Heat Pump) (Heat Pump) operating.
- Page 5 Blower Data 7AH1AE-024 Air Volume and Motor Watts External Static Tap 1 Tap 2 Tap 3 Tap 4 Tap 5 Pressure in. w.g. Watts Watts Watts Watts Watts 1015 1015 1054 1020 7AH1AE-030 Air Volume and Motor Watts External Static...
- Page 6 Failure to do so can structions and local municipal building codes, installation result in back or other type of injury. of Allied air handler units (with or without optional electric heat), MUST conform with National Fire Protection Asso- IMPORTANT ciation (NFPA) standards: “Standard for Installation of Air...
- Page 7 Local authorities having jurisdiction should be consulted WARNING before installation is made. Such applicable regulations or requirements take precedence over the general instruc- Danger of explosion. Keep flammable tions in this manual. materials and vapors, such as gasoline, away Install the conditioned air plenum, ducts and air filters from air handler.
- Page 8 Unit Dimensions – Upflow Position 1 (25) DETAIL OF PIPING PLATE 4-3/4 3/4 (19) (121) SUCTION LINE SUPPLY AIR LIQUID OPENING CONDENSATE LINE 14-1/2 DRAINS (2) (368) 2-3/8 (Horizontal) (60) 1 (25) 1 (25) CONDENSATE DRAINS (2) 4-3/8 (Upflow and (111) 2-3/4 Downflow)
- Page 9 Unit Dimensions – Horizontal Position 1-1/8 (29) DETAIL OF PIPING PLATE CONDENSATE CONDENSATE DRAINS (2) DRAINS (2) (Upflow and 4-3/4 3-1/2 (Horizontal) Downflow) (121) (89) 20-3/8 (518) OPENING (559) 1-3/4 (44) (19) SUCTION 2-3/4 LINE LIQUID (70) LINE 2-3/8 4-3/8 (60) (111) VOLTAGE INLETS...
- Page 10 When a 7AH1AE unit is installed in a closet with a lou- ing any hot work. A degree of ventilation shall continue vered return opening, the minimum open area for the lou- during the period that the work is carried out.
- Page 11 Electronic leak de- REFRIGERANT METERING DEVICE tectors may be used to detect refrigerant leaks but, in 7AH1AE units are equipped with a factory-installed check/ the case of flammable refrigerants, the sensitivity may expansion valve. not be adequate, or may need re-calibration. (Detec-...
- Page 12 5 - If the unit is suspended, the entire length of the cabinet must be supported. If you use a chain or strap, use a piece of angle iron or sheet metal attached to the unit (either above or below) to support the length of the cabinet.
- Page 13 90º BEND IMPORTANT If electric heat section with circuit breakers (ECB45) is DRAIN PAN DRAIN PAN installed in a 7AH1AE unit in a downflow application, the REINSTALLED SHIPPING LOCATION HERE circuit breakers must be rotated 180° to the UP position.
- Page 14 Horizontal Left Configuration 1 - Remove sensor bracket assembly from vertical position. Do not remove sensor from bracket, and do not disconnect or reroute sensor wire from the control panel area. Set the sensor bracket assembly aside. 2 - Follow instructions for left-hand discharge as outlined in previous section on pages 12 and 13.
- Page 15 3 - With air handler access panels removed, install sensor bracket assembly to the side of the cabinet by lining up holes as shown in figure 11. FIGURE 11 (Detail) 4 - Loop and bundle any excess sensor wire with a wire tie.
- Page 16 Condensate Drain IMPORTANT On units of this type, where the blower “draws” rather than “blows” air through the coil, traps must be installed in the condensate drain lines (primary and auxiliary, if used). Traps prevent the blower from drawing air through the drain lines into the air supply.
- Page 17 Confirm primary and secondary drains are open. 1 - Pour several quarts of water into drain pan. Use 1 - 7AH1AE units are equipped with a drain pan, which enough water to fill both the drain trap and the line.
- Page 18 NOTE - When installing refrigerant lines longer than 50 copper lines. Air handler coils should be installed feet, see the Allied Refrigerant Piping Design and Fabrica- only with specified line sizes for approved system tion Guidelines, CORP. 9351-L9, or contact Allied Techni- combinations.
- Page 19 on the indoor coil to the fittings on the outdoor unit. from sharp edges and make sure that it does not touch Run the lines in a direct path, avoiding unnecessary other metal surfaces. This prevents damage caused by vibration or metal-on-metal contact. turns and bends.
- Page 20 PLEASE READ IMPORTANT ISSUES CONCERNING BRAZING OPERATIONS ON PREVIOUS PAGES BEFORE PROCEEDING. NOTE - REFER TO OUTDOOR UNIT INSTALLATION INSTRUCTIONS FOR REFRIGERANT PIPING SIZE REQUIREMENTS. NOTE - Use silver alloy brazing rods with five or six percent minimum silver alloy for copper-to-copper brazing, 45 percent alloy for copper-to-brass and copper-to-steel brazing.
- Page 21 WARNING Sealing the Unit Seal the unit so that warm air is not allowed into the cabi- Electric Shock Hazard. net. Warm air introduces moisture, which results in water Can cause injury or death. blow-off problems. This is especially important when the Foil-faced insulation conductive...
- Page 22 1 - Disconnect all power supplies. 2 - Remove the air handler access panel. 3 - Route the field supply wires to the air handler electrical connection box. 4 - Use UL-listed wire nuts to connect the field supply conductors to the unit black and yellow leads, and the ground wire to ground terminal marked GND.
- Page 23 CHECK ELECTRIC HEAT (IF USED) IMPORTANT • Set thermostat to call for auxiliary heat (approximate- This unit is approved for installation clearance to ly 5°F above ambient temperature). The indoor blow- combustible material as stated on the unit rating er and auxiliary heat should come on together. Allow a plate.
- Page 24 Allied does not recommend the use of its air handler unit The temperature/humidity difference between the inside during any phase of construction. Very low return air tem-...
- Page 25 Leak Detected When the RDS Non-Communicating Blower Control Board detects a refrigerant leak: 1 - The RDS Non-Communicating Blower Control Board shuts off the (R) input (24VAC power) to the thermo- stat, which de-energizes the outdoor unit compressor and heat sources, such as gas and/or electric strip heat.
- Page 26 Red LED Diagnostic Codes TABLE 6. Additional Button Functions Red diagnostic codes indicate a specific RDS Non-Com- State Press Action municating Blower Control Board issue. Yellow diagnostic Initializing Short Skips remaining pre-purge after sen- codes indicate the sensor’s position (if applicable). sors are recognized by the RDSC TABLE 4.
- Page 27 a. If the thermostat maintained the settings, the Start Up Test Procedure thermostat is compatible with the RDS Non- Communicating Blower Control Board. The RDS Non-Communicating Blower Control Board is b. If the thermostat did not maintain its setpoint and/ equipped with a Test/Reset button, see “Test Button Func- or operating mode, the thermostat is not compatible tionality”...
- Page 28 Diagnostic Codes and Troubleshooting TABLE 7. LED Diagnostic Codes State LED Diagnostic Code Action Required Initializing Flashing green None Solid green. Monitoring If a prior mitigation occurred, a blue flash None interrupts the solid green LED. Mitigating Check coil tubes for leak. Repair the issue and restart the equip- Flashing blue (Leak Detected) ment.
- Page 29 Installing Contractor’s Name_______________________ Installing Date_______________________________ Installing Contractor’s Phone_______________________ Air Handler Model #___________________________ Job Address____________________________________ Thermostat Line Voltage SUPPLY Disconnect Switch Temperature Integrated Control Duct Blower Motor Amps System Electric Heat Amps Duct Static RETURN Filter Drain Line DUCT SYSTEM TOTAL EXTERNAL STATIC (dry coil) dry coil wet coil SUPPLY AIR DUCT...
- Page 30 Installing Contractor’s Name_______________________ Installing Date_______________________________ Installing Contractor’s Phone_______________________ Air Handler Model #___________________________ Job Address____________________________________ Line Voltage Disconnect Switch Thermostat Integrated Control Duct System Duct System Filter RETURN SUPPLY Electric Heat Amps Blower motor Amps Drain Line Duct Static Temperature DUCT SYSTEM TOTAL EXTERNAL STATIC (dry coil) dry coil wet coil...
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