Armstrong Air Conditioning 4SHP16LT Series User Manual

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INSTALLATION AND MAINTENANCE
INSTRUCTIONS
4SHP16LT Series
Split System Heat Pump
Sharp metal edges can cause injury. When
installing the unit, use care to avoid sharp
edges.
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
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
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
*48478A006*
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

Armstrong Air Conditioning 4SHP16LT Series Specifications

General

Series	4SHP16LT
SEER	16
Refrigerant	R-410A
Motor Type	PSC
Voltage	208/230V
Phase	1
Operating Temperature Range (Cooling)	up to 125°F
Type	Heat Pump
Stages	Single Stage
Cooling Capacity	1.5 - 5 Tons

Summary

Installation and Maintenance Instructions

Installation Procedures

Installation Clearances

Maintain specified clearances around the unit for airflow and servicing.

Installation - Continued

Electrical Wiring

Field wiring must comply with national/local codes, grounding is critical.

Thermostat Designations and Line Set Diameters

Refrigerant Line Set Diameter Guide

Table of recommended line set diameters based on BTUH and length.

Refrigerant Line Set Isolation and Brazing

Brazing Connection Procedure

Step-by-step guide for brazing refrigerant lines to service valves.

Flushing and Coil Preparation

Flushing Procedure

Procedure for flushing existing systems to remove contaminants and oil.

Refrigerant Metering Device and Service Valves

Refrigerant Metering Device (TXV)

Explains that units use TXV systems only and compatibility with R22 devices.

TXV Model and Part Number Data

Table listing correct TXV part numbers for different unit models.

Metering Device Installation Guide

Step-by-step guide on how to install the expansion valve (TXV).

Leak Testing and System Evacuation

Leak Testing Procedures

Procedures for checking the system for leaks after connections are made.

System Evacuation Procedure

Critical procedure to remove non-condensables and moisture from the system.

System Start-Up Procedures

Refrigerant Charging Guidelines

Explains R410A characteristics, proper charging methods, and cylinder identification.

Charging Methods

Procedures for charging based on temperature and method.

R410A Temperature/Pressure Chart

Normal Operating Pressures Table

System Operation Features

Defrost System Operation

System Diagnostic Module and Troubleshooting

Diagnostic LED Interpretation

Troubleshooting Flash Codes

Table of flash codes for system fault descriptions and troubleshooting.

Flash Codes (Continued)

Continuation of flash codes and troubleshooting information.

Maintenance Procedures

Seasonal Service Checks

Homeowner Information and Tips

Heat Pump Operation Characteristics

Start-Up and Performance Checklist

Wiring Diagram