Armstrong 4SHP 16 Series User Manual

506860-01 Issue 1404 Page 1 of 35
INSTALLATION AND MAINTENANCE INSTRUCTIONS
4SHP 16/18LS SERIES
Split System Heat Pump
These instructions must be read and understood completely before attempting installation.
TABLE OF CONTENTS
INSTALLATION ....................................................2
CONNECTION DIAGRAM .....................................4
START-UP ...........................................................14
OPERATION ........................................................17
ALERT CODE ......................................................23
MAINTENANCE ..................................................28
WARRANTY ........................................................34
Manufactured By
Allied Air Enterprises LLC
A Lennox International Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
*P506860-01*
(p) 506860-01
The equipment covered in this manual is to be installed by trained and experienced service and installation
technicians. Improper installation, modication, service, or use can cause electrical shock, re, 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 components. Only trained and
qualied service personnel should install or service
this equipment. Installation and service performed by
unqualied 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.
WARNING

Armstrong 4SHP 16 Series Specifications

General

Brand	Armstrong
Model	4SHP 16 Series
Category	Heat Pump
Language	English

Summary

Installation Procedures

General Installation Guidelines

Covers reading instructions, compliance with codes, and general installation precautions.

Unit Placement and Clearances

Specifies unit positioning and required surrounding space for airflow and servicing.

Mounting and Electrical Wiring

Details on slab/roof mounting and field wiring requirements.

Refrigerant Line Set Installation

Procedures for installing, brazing, and flushing refrigerant lines.

Field Wiring and Control Diagrams

Typical Field Wiring Diagrams

Illustrates basic high and low voltage connection layouts for thermostats and units.

Communicating System Wiring

Wiring details for Comfort Sync™ thermostat and unit communication.

Refrigerant Management and Charging

Flushing Existing Systems

Procedure for cleaning old refrigerant lines and coils before new installation.

Refrigerant Metering Device Installation

Information on TXV systems and their installation.

Unit Start-Up Procedures

Initial checks and power-up steps before operating the unit.

Refrigerant Charging Methods

Methods for adding R410A refrigerant to the system.

Operating Pressure Data

Reference tables for typical system pressures under various conditions.

System Operation and Maintenance

System Operation Modes

Explains cooling, heating, defrost cycles, and fan operation.

Routine Maintenance Tasks

Recommended service checks for optimal performance and longevity.

Homeowner Maintenance and Checks

Filter care, coil cleaning, and thermostat operation guidance.

Control Board and Diagnostics

Defrost Control Board Configuration

Jumper configurations for defrost termination and stage lock-in.

Alert Code Reset and Status

Procedures to clear errors and understand unit status codes.

Seven-Segment Alert Codes

List and explanation of system fault codes displayed on the unit.

Field Test and Program Menus

Accessing diagnostic modes and configuration settings.

Warranty Information

Equipment and Parts Coverage

Details on what equipment and parts are covered under the warranty.

Warranty Limitations and Exclusions

Conditions and factors that may void the warranty.