E2011 Lennox Industries Inc.
Dallas, Texas, USA
RETAIN THESE INSTRUCTIONS
FOR FUTURE REFERENCE
These instructions are intended as a general guide and do not supersede local codes in any way. Consult authorities having jurisdiction before installation.
NOTICE TO INSTALLER
UNIT PLACEMENT
It is critical for proper unit operation to place outdoor unit on an elevated surface as described in Unit Placement section on page 7.
DEFROST OPERATION
It is critical for proper defrost operation to set the defrost termination pins (E46) on the heat pump control prior to starting system. See Defrost System section on page 32 for further details.
BRAZING LINE SET TO SERVICE VALVES
It is imperative to follow the brazing technique illustrated starting on page 13 to avoid damaging the service valve’s internal seals.
NOTICE
A thermostat is not included and must be ordered separately.
DThe Lennox icomfort Touch® thermostat must be used in communicating application
DIn non−icomfortt applications, the Lennox ComfortSense® 7000 thermostat may be used, as well as other non−communicating thermostats.
In all cases, setup is critical to ensure proper system operation.
Field wiring examples for non−icomforttapplications begin on page 25.
See the icomfort Touch® thermostat Quick Start Guide for communicating and partial communicating field wiring connections.
INSTALLATION
INSTRUCTIONS
Dave Lennox Signature® Collection XP17 System
HEAT PUMPS
506586−01
06/11Litho U.S.A. Supersedes 05/11
TABLE OF CONTENTS
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Model Number Identification . . . . . . . . . . . . . . . . . . . . 2 Typical Unit Parts Arrangement . . . . . . . . . . . . . . . . . 3 Shipping and Packing List . . . . . . . . . . . . . . . . . . . . . . 4 Using Manifold Gauge Set . . . . . . . . . . . . . . . . . . . . . . 4 Operating Service Valves . . . . . . . . . . . . . . . . . . . . . . . 4 Recovering Refrigerant from Existing System . . . . . 6 Unit Placement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Removing and Installing Panels . . . . . . . . . . . . . . . . . 9 New or Replacement Line Set . . . . . . . . . . . . . . . . . . . 11 Flushing the System . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Brazing Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Flushing Line Set and Indoor Coil . . . . . . . . . . . . . . . . 16 Installing Indoor Expansion Valve . . . . . . . . . . . . . . . . 17 Leak Test Line Set and Indoor Coil . . . . . . . . . . . . . . . 18 Evacuating Line Set and Indoor Coil . . . . . . . . . . . . . 18 Electrical . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Heat Pump Control (A175) Jumpers and Terminals 23 Field Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Servicing Unit Delivered Void of Charge . . . . . . . . . . 27 Unit Start−Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 System Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Air Handler / Coil Matchups and Targeted Subcooling Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Operating and Temperature Pressures . . . . . . . . . . . 31 System Operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Defrost System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 System Status, Fault and Lockout LED Codes . . . . . 40 Field Configuration and Testing . . . . . . . . . . . . . . . . . . 45 Maintenance (Dealer and Homeowner) . . . . . . . . . . . 51 SunSource® Home Energy System . . . . . . . . . . . . . . 53 Start Up and Performance Checklist . . . . . . . . . . . . . 54
General
This outdoor unit is designed for use with HFC−410A refrigerant only. This unit must be installed with an approved indoor air handler or coil. See the Lennox XP17 Engineering Handbook for approved indoor component matchups.
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