Allied Air Enterprises
4HP16LT
manual
Two Stage Wire Diagram
Install
Single Stage Wire Diagram
Delay Mode
Electrical Wiring
Maintenance
System Diagnostic Module
Brazing Connection Procedure
Refrigerant Charge Adjustment
Case of extended power outage
Service Valve
Page 30
Two Stage Wire Diagram
506468-01
Issue 1004
Page 30
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Page 30
Image 30
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Contents
4HP16LT Series
General
Installation Clearances
Torque Table
Fastener Torque
Slab Mounting
Electrical Wiring
Slab Mounting
Roof Mounting
Thermostat Designations
Without Auxiliary Heat
With Auxiliary Heat
Outside Unit Placement Installation
Installing Refrigerant Line
Brazing Connection Procedure
Refrigerant Line Sets Installing Horizontal Runs
Refrigerant Line Sets Transition from Vertical to Horizontal
Flushing Existing Line Set and Indoor Coil
R22 refrigerant will be used to flush the system
Flushing Connections
Liquid and Suction Line Service Valves
Refrigerant Metering Device
Manifold Gauge Set
To Open Liquid or Suction Line Service Valve
Service Valve
Ball Type Service Valve Valve Open
To Close Liquid or Suction Line Service Valve
Evacuation
Refrigerant Charge Adjustment
Ambient temperature
Refrigerant Charging
Charge Using Weigh-In Method
Cooling Cycle
R410A Temperature/Pressure Chart
Blocking Outdoor Coil
Normal Operating Pressures
Check Charge Using Normal Operating Pressures
Approach Values for TXV Systems
Operation
Filter Drier
Defrost Board Pressure Switch Connections
Sensor Temp. / Resistance Range
Delay Mode
Issue
Defrost Control Board Diagnostic LEDs
Flash Codes
System Diagnostic Module
Interpreting the Diagnostic LEDs
LED Description
24VAC Power Wiring
Short Cycling
Miswired Module Troubleshooting
Thermostat Demand Wiring
Miswired Module Codes
Maintenance
Case of extended power outage
Heat Pump Operation
Thermostat Operation
Preservice Check
Heating
Start-Up and Performance Checklist
Cooling
Sequence of Operation
Single Stage Wire Diagram
Two Stage Wire Diagram
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