Table of Contents
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INSTALLATION AND MAINTENANCE
Split System Air Conditioner
The equipment covered in this manual is to be installed by trained and experienced
service and installation technicians. Improper installation, modification, service, or
use can cause electrical shock, fire, explosion, or other conditions which may cause
personal injury, death, or property damage. Use appropriate safety gear including
safety glasses and gloves when installing this equipment.
WARNING
Risk of electrical shock. Disconnect all
remote power supplies before installing or
servicing any portion of the system. Failure
to disconnect power supplies can result in
property damage, personal injury, or death.
WARNING
Installation and servicing of air conditioning
equipment can be hazardous due to internal
refrigerant pressure and live electrical com-
ponents. Only trained and qualified service
personnel should install or service this equip-
ment. Installation and service performed by
unqualified persons can result in property
damage, personal injury, or death.
WARNING
Sharp metal edges can cause injury. When
installing the unit, use care to avoid sharp
edges.
# 48563L006
INSTRUCTIONS
4SCU14LE Series
WARNING
Save these instructions for future reference
TABLE OF CONTENTS
INSTALLATION ...................................... 2
START-UP ............................................ 12
OPERATION ........................................ 16
MAINTENANCE ................................... 16
CONNECTION DIAGRAM ................... 18
Manufactured By
Allied Air Enterprises Inc.
A Lennox International Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
*48563L006*
Page 1
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Summary of Contents for Allied 4SCU14LE Series
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Page 1: Table Of Contents
Installation and service performed by unqualified persons can result in property Manufactured By damage, personal injury, or death. Allied Air Enterprises Inc. A Lennox International Inc. Company 215 Metropolitan Drive West Columbia, SC 29170 WARNING *48563L006* Sharp metal edges can cause injury. -
Page 2: Installation
INSTALLATION If any damages are discovered and reported to the carrier DO NOT INSTALL THE UNIT, as claim may be denied. General Check the unit rating plate to confirm specifications Read this entire instruction manual, as well as the are as ordered. instructions supplied in separate equipment, before starting the installation. -
Page 3: Slab Mounting
Slab Mounting Thermostat Designations Discharge Air Thermostat Indoor Unit Building Power Outdoor Structure Unit Heat Cooling Y1 Outdoor Unit Indoor Blower Mounting Slab C Outdoor Unit See unit wiring diagram for power supply connections. If the indoor unit is not equipped with a blower relay, Ground Level one must be field supplied and installed. - Page 4 suction riser to maintain minimum velocity at minimum Installing Refrigerant Line capacity. Recommended line length is 50' or less. If more than 50' line set is required, contact Technical Services at During the installation of an air conditioning system, it is 1-800-448-5872.
- Page 5 Refrigerant Line Sets: Installing Horizontal Runs To hang line set from joist or rafter, use either metal strapping material Wire Tie or anchored heavy nylon wire ties. (around vapor line only) 8’ Strapping Material Floor Joist or (around vapor line only) Roof Rafter Tape or Wire Tie 8’...
- Page 6 Refrigerant Line Sets: Installing Vertical Runs (new construction shown) IMPORTANT: Refrigerant lines must not contact wall. Outside Wall Vapor Line Liquid Line NOTE: Similar installation practices should be used if line set is to be Wood Block installed on exterior of outside wall. Between Studs Wire Tie Inside Wall...
- Page 7 Flushing Existing Line Set and Indoor Coil Flushing Procedure This procedure should not be performed on systems IMPORTANT: The line set and/or indoor coil must be which contain contaminants, such as compressor flushed with at least the same amount of refrigerant that burn out.
- Page 8 (It may be necessary to bypass the low pressure 9. Close the valve on the inverted R22 cylinder and the switches to ensure complete refrigerant evacuation.) gauge set valves. Pump the remaining refrigerant out of the recovery machine and turn the machine off. When the low side system pressures reach 0 psig, close the suction line valve.
- Page 9 Metering Device Installation Service Valve Valve Closed Figure 9 If installing an expansion valve on an indoor coil that previously used a fixed orifice, be sure to remove the existing fixed orifice. Failure to remove a fixed orifice when installing an expansion valve to the indoor coil will result in improper operation and damage to the system.
- Page 10 Suction Line (Ball Type) Service Valve Leak Testing Suction line (ball type) service valves function the same After the line set has been connected to the indoor and way as the other valves; the difference is in the construc- outdoor units, the line set connections and indoor unit tion (see Figure 11).
- Page 11 8. Reconnect the manifold gauge to the vacuum pump, Evacuation turn the pump on, and continue to evacuate the line Evacuating the system of noncondensables is critical for set and indoor unit until 500 microns is maintained proper operation of the unit. Noncondensables are defined within a 20-minute period after shutting off the as any gas that will not condense under temperatures and vacuum pump and closing the manifold gauge valves.
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Page 12: Start-Up
START-UP Refrigerant Charge Adjustment CAUTION If unit is equipped with a crankcase heater, it should be energized 24 hours before unit . t f start-up to prevent compressor damage as a result of slugging. * If line length is greater than 15 ft., add this amount. If line length is less than 15 ft., remove this amount. - Page 13 2. Close manifold gauge set valves. Connect the center manifold hose to an upright cylinder of R410A. R410A Temperature/Pressure Chart 3. If room temperature is below 70°F, set the room thermo- stat to call for heat. This will create the necessary load F °...
- Page 14 _____ ° Saturation Temperature °F 5. Subtract the outdoor ambient temperature from the liquid line temperature to determine the approach – _____ ° Liquid Line Temperature °F temperature. _____ ° Subcooling Value °F _____ ° Liquid Line Temperature °F 5. Compare the subcooling value with those shown in –...
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Page 15: Normal Operating Pressures
Normal Operating Pressures F ° F ° F ° F ° F ° F ° L = Liquid S = Suction Values provided above are typical pressures. Indoor unit matchup, indoor air quality, and indoor load will cause pressures to vary. Table 8 # 48563L006 Page 15... -
Page 16: Operation
OPERATION MAINTENANCE Outdoor unit and indoor blower cycle on demand from the WARNING room thermostat. When the thermostat blower switch is moved to the ON position, the indoor blower operates Before performing maintenance operations continuously. on system, turn the electric power to unit OFF at disconnect switch(es). - Page 17 5. Check for correct voltage at unit (with unit operating). 6. Check amp-draw on blower motor. Unit nameplate _________ Actual _________ Start-Up and Performance Checklist Job Name _______________________________ Job No. ________________ Date ______________ Job Location _____________________________ City ___________________ State ______________ Installer _________________________________ City ___________________ State ______________...
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Page 18: Connection Diagram
OUTDOOR DUAL CAPACITOR TIMED OFF CONTROL PURPLE TO 24 VAC (IF USED) BLACK POWER SOURCE 20 VA MINIMUM ORANGE NEC CLASS 2 YELLOW BLACK COMPRESSOR COMPRESSOR CONTACTOR CRANKCASE HEATER (IF USED) GROUND 208-230/60/1 GROUND BLACK K1-1 S4 HIGH 208-230/60/1 S24 LOSS YELLOW PRESSURE OF CHARGE... -
Page 19: Limited Warranty
Warrantor: Allied Air Enterprises Inc., 215 Metropolitan Drive, West Columbia, SC 29170 These Allied Air Enterprises Inc. products are available under the following names: Air Ease, Armstrong Air Subject to the limitations stated in this warranty, we warrant to the first buyer for use the residential cooling unit, when installed, operated and maintained as required by this warranty, to be free of defects in workmanship or material for a period of 5 years in residential installations (1 year in non-residential installations) from the time of installation.
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