Table of Contents
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INSTALLATION AND MAINTENANCE
Split System Heat Pump
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.
# 48478A006
INSTRUCTIONS
4SHP16LT Series
WARNING
Save these instructions for future reference
TABLE OF CONTENTS
INSTALLATION ...................................... 2
START-UP ............................................ 12
OPERATION ........................................ 17
MAINTENANCE ................................... 22
HOMEOWNER INFORMATION ........... 23
CONNECTION DIAGRAM ................... 26
WARRANTY ......................................... 27
Manufactured By
Allied Air Enterprises Inc.
A Lennox International Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
*48478A006*
Page 1
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Table of Contents
Related Manuals for Armstrong Air Conditioning 4SHP16LT Series
Summary of Contents for Armstrong Air Conditioning 4SHP16LT Series
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Page 1: Table Of Contents
INSTALLATION AND MAINTENANCE INSTRUCTIONS 4SHP16LT Series Split System Heat Pump WARNING 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. -
Page 2: Installation
INSTALLATION on the carrier’s freight bill. Take special care to examine the unit inside the carton if the carton is damaged. Any concealed damage discovered should be reported to the General last carrier immediately, preferably in writing, and should Read this entire instruction manual, as well as the include a request for inspection by the carrier’s agent. -
Page 3: Slab Mounting
NOTE: Elevation of the unit may be accomplished by Refer to the furnace or blower coil Installation Instructions constructing a frame using suitable materials. If a for additional wiring application diagrams and refer to unit support frame is constructed, it must not block drain rating plate for minimum circuit ampacity and maximum holes in unit base. - Page 4 Field refrigerant piping consists of liquid and suction lines from the outdoor unit (sweat connections) to the indoor Thermostat Designations coil (flare or sweat connections). (Some connections may not apply. Refer to specific thermostat and indoor unit.) Select line set diameters from Table 2 to ensure that oil Without Auxiliary Heat returns to the compressor.
- Page 5 Line Set Isolation WARNING Illustrations on pages 6 and 7 demonstrate procedures Polyol ester (POE) oils used with R410A which ensure proper refrigerant line set isolation. Figure 5 refrigerant absorb moisture very quickly. It is shows how to install line sets on horizontal runs. Figure 6 shows how to make a transition from horizontal to vertical.
- Page 6 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 7 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 8 Flushing Connections Note: The inverted R22 cylinder must contain at least the same amount of refrigerant as was recovered from the existing system. Figure 8 If the existing outdoor unit is equipped with manual are not approved for use with R410A refrigerant and shutoff valves AND new R22 refrigerant will be used may prevent proper flushing.
- Page 9 removed during the first flush. After each system flush, allow the recovery machine to pull a vacuum Metering Device Installation on the system at the end of the procedure. 9. Close the valve on the inverted R22 cylinder and the gauge set valves.
- Page 10 Service Valve Ball Type Service Valve (Valve Open) Valve Closed Stem Cap Service Port Insert hex wrench here To outdoor coil Service Port Cap To indoor coil Schrader valve open (valve front seated) to line set when valve is closed (front seated) Stem Cap Insert hex wrench here...
- Page 11 to protect the manifold gauge set from damage • Low pressure gauge to suction line service valve caused by high pressure.) • High pressure gauge to liquid line service valve 2. With both manifold valves closed, connect the cylin- 2. Connect micron gauge. der of R410A refrigerant.
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Page 12: Start-Up
START-UP refrigerant charge adjustment. A blank space is provided on the unit rating plate to list the actual field charge. CAUTION Refrigerant Charge Adjustment If unit is equipped with a crankcase heater, it should be energized 24 hours before unit start-up to prevent compressor damage as a result of slugging. -
Page 13: Cooling Cycle
Cooling Cycle OUTDOOR UNIT DEFROST THERMOSTAT DISTRIBUTOR NOTE - ARROWS INDICATE DIRECTION OF REFRIGERANT FLOW REVERSING VALVE EXPANSION/CHECK VALVE OUTDOOR COIL BIFLOW HIGH INDOOR UNIT FILTER / DRIER PRESSURE PRESSURE MUFFLER GAUGE MANIFOLD SUCTION SUCTION SERVICE LIQUID LINE PORT R410A LINE VALVE COMPRESSOR... - Page 14 R410A Temperature/Pressure Chart Blocking Outdoor Coil Outdoor coil should be blocked one side at a time F ° F ° F ° with cardboard or plastic sheet until proper testing pressures are reached. Cardboard or Plastic Sheet Figure 13 4. Subtract the liquid line temperature from the satura- tion temperature (according to the chart) to determine subcooling.
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Page 15: Normal Operating Pressures
Normal Operating Pressures F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° F ° L = Liquid S = Suction Values provided above are typical pressures. - Page 16 5. Subtract the outdoor ambient temperature from the Check Charge Using Normal Operating Pressures liquid line temperature to determine the approach temperature. Use Table 7 on page 15 to perform maintenance checks. Table 7 is not a procedure for charging the system. Minor _____ °...
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Page 17: Operation
OPERATION Emergency heat is usually used during an outdoor shut- down, but it should also be used following a power outage if Outdoor unit and indoor blower cycle on demand from the power has been off for over an hour and the outdoor room thermostat. -
Page 18: Defrost Control Board
adjustable intervals. If the defrost thermostat is closed addition, the diagnostic LEDs will indicate a locked-out when the selected compressor run time interval ends, the pressure switch after the fifth occurrence of an open pres- defrost relay is energized and the defrost begins. sure switch (see Table 9). -
Page 19: Interpreting The Diagnostic Leds
flashes correlates to a particular abnormal condition. System Diagnostic Module TRIP LED (Red) indicates there is a demand signal from 4SHP16LT units contain a diagnostic module for trouble- the thermostat but no current to the compressor is de- shooting heat pump system failures. By monitoring and tected by the module. -
Page 20: Vac Power Wiring
60 seconds. The module will continue to display the 24VAC Power Wiring previous flash code until the condition returns to normal or 24VAC is removed from the module. TRIP and ALERT The diagnostic module requires a constant nominal LEDs flashing at the same time means control circuit 24VAC power supply. -
Page 21: Thermostat Demand Wiring
Thermostat Demand Wiring Miswired Module Codes The diagnostic module requires a thermostat demand Depending on the system configuration, some ALERT signal to operate properly. The thermostat demand signal flash codes may not be active. The presence of safety input, labeled Y on the module, should always be con- switches affects how the system alerts are displayed by nected to the compressor contactor coil so that when the the module. -
Page 22: Maintenance
MAINTENANCE WARNING Before performing maintenance operations on system, turn the electric power to unit OFF at disconnect switch(es). Unit may have multiple power supplies. Electrical shock could cause personal injury or death. Before the start of each heating and cooling season, the following service checks should be performed by a qualified service technician. -
Page 23: Homeowner Information
HOMEOWNER INFORMATION is exposed to substances which are corrosive or which block airflow across the coil (such as pet urine, cottonwood seeds, etc...). In order to ensure peak performance, your system must be properly maintained. Clogged filters and blocked airflow prevent your unit from operating at its most efficient level. - Page 24 adjustment; turning the unit off and back on before Preservice Check pressures equalize puts stress on unit compressor. If your system fails to operate, check the following before Fan Switch calling for service: In AUTO or INT (intermittent) mode, the blower operates •...
- Page 25 Start-Up and Performance Checklist Job Name _______________________________ Job No. ________________ Date ______________ Job Location _____________________________ City ___________________ State ______________ Installer _________________________________ City ___________________ State ______________ Unit Model No. ______________ Serial No. ___________________ Service Technician ________________________________________ Nameplate Voltage ______________ Rated Load Ampacity ________ Compressor Amperage ____________ Outdoor Fan ______________ Maximum Fuse or Circuit Breaker ________________________...
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Page 26: Connection Diagram
LT BLUE OUTDOOR DUAL CAPACITOR PURPLE F C H THERMOSTAT BLACK BLACK ORANGE O-OUT YELLOW LO-PS BLUE BLACK COMMON Y1 OUT HI-PS COMPRESSOR A132 CRANKCASE HEATER DEFROST CONTROL YELLOW 208-230/60/1 GROUND GROUND THERMOSTAT REVERSING CMC1 VALVE Y1 Y2 DEFROST THERMOSTAT O-OUT LO-PS BLACK... -
Page 27: Warranty
The 4SHP16LT Series heat pumps carry a 10-year compressor warranty. Your new equipment must be properly installed, operated and maintained in accordance with the unit installation, operation and maintenance instructions provided with each unit.
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