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2015 Lennox Industries Inc.

Dallas, Texas, USA

THIS MANUAL MUST BE LEFT WITH THE

HOMEOWNER FOR FUTURE REFERENCE

GENERAL

This XP14 outdoor heat pump is designed for use with
HFC-410A refrigerant only. This unit must be installed
with an approved indoor air handler or coil. See the Len­
nox XP14 Product Specifications bulletin (EHB) for ap­
proved indoor component match ups.
These instructions are intended as a general guide and
do not supersede local codes in any way. Consult authori­
ties having jurisdiction before installation.

CAUTION

Before attempting to perform any service or mainte­
nance, turn the electrical power to unit OFF at discon­
nect switch.

INSTALLATION
INSTRUCTIONS

Elite

®

 Series XP14 Units

HEAT PUMP
507362-01
8/2015
Supersedes 7/2014

WARNING

Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal in­
jury or loss of life.

Installation and service must be performed by a li­
censed professional installer (or equivalent) or service
agency.

NOTICE !

Charging information is given on the charging pro­
cedure sticker on the unit access panel. For more
in-depth information, consult the Installation and
Service Procedures manual, available as Corp.
0721-L7 on DaveNet or through the Technical Sup­
port department at 800-453-6669.

STEP 1 -- SETTING THE UNIT -- Clearances

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See

NOTES

See NOTES

NOTES:

Service clearance of 30 in. (762 mm) must be maintained on one of
the sides adjacent to the control box. 

Clearance to one of the other three sides must be 36 in (914 mm).

Clearance to one of the remaining two sides may be 12 in. (305mm)
and the final side may be 6 in.(152 mm).

A clearance of 24 in. (610 mm) must be maintained between two units.

48 in. (1219 mm) clearance required on top of unit.

See

NOTES

See NOTES

Control

Box

FIGURE 1

Litho U.S.A.

Summary of Contents for Elite XP14-018-230

Page 1: ...stment alteration service or maintenance can cause property damage personal in jury or loss of life Installation and service must be performed by a li censed professional installer or equivalent or se...

Page 2: ...Unit Placement NOTICE Roof Damage This system contains both refrigerant and oil Some rubber roofing material may absorb oil causing the rubber to degrade Failure to follow this notice could result in...

Page 3: ...or expansion valve approved for use with HFC 410A refrigerant must be ordered separately and installed prior to operating the system LEG DETAIL BASE 2 50 8MM SCH 40 FEMALE THREADED ADAPTER ELEVATED SL...

Page 4: ...ated NOTE Some applications may require a field provided 7 8 to 1 1 8 adapter NOTE When installing refrigerant lines longer than 50 feet refer to the Refrigerant Piping Design and Fabrica tion Guideli...

Page 5: ...eflon rings H Use a field provided fitting to temporarily reconnect the liquid line to the indoor unit s liquid line orifice housing LOW HIGH EXISTING INDOOR UNIT GAUGE MANIFOLD CYLINDER CONTAINING CL...

Page 6: ...r the ends The pipe must remain round Do not crimp end of the line Remove service cap and core from both the vapor and liquid line service ports 1 2 LIQUID LINE SERVICE VALVE SERVICE PORT CORE SERVICE...

Page 7: ...oths WHEN BRAZING LINE SET TO SERVICE VALVES POINT FLAME AWAY FROM SERVICE VALVE PREPARATION FOR NEXT STEP 7 WRAP SERVICE VALVES To help protect service valve seals during brazing wrap water saturated...

Page 8: ...mounted external to the coil casing sensing bulb installation for bulb positioning STUB END TEFLON RING LIQUID LINE ASSEMBLY WITH BRASS NUT DISTRIBUTOR ASSEMBLY 3 Install one of the provided Teflon r...

Page 9: ...e to 150 psig 1034 kPa Open the valve on the high side of the manifold gauge set in order to pressurize the line set and the indoor unit E After a few minutes open one of the service valve ports and v...

Page 10: ...pump and closing the manifold gauge valves F When the absolute pressure requirement above has been met disconnect the manifold hose from the vacuum pump and connect it to a cylinder of HFC 410A positi...

Page 11: ...ith this product CAUTION Failure to use properly sized wiring and circuit breaker may result in property damage Size wiring and circuit breaker s per Product Specifications bulletin EHB and unit ratin...

Page 12: ...AND HIGH VOLTAGE CIRCUITS A B C D 3 FIGURE 13 Typical 24VAC Control Wiring Diagrams Field Installed THERMOSTAT INDOOR UNIT R C W1 Y1 O G R C W1 W2 W3 G R C W1 Y1 O COMMON 1ST STAGE AUXILIARY HEAT IND...

Page 13: ...rvice port which has a factory installed valve stem Figures 15 and 16 provide information on how to access and operate both angle and ball type service valves Torque Requirements When servicing or rep...

Page 14: ...clockwise ACCESS SERVICE PORT FIGURE 17 Checking Refrigerant Charge The XP14 unit is factory charged with enough HFC 410A refrigerant to accommodate a 15 foot length of refrigerant piping Charge shoul...

Page 15: ...ed the unit will remain in forced defrost mode until defrost thermostat opens or termin ated on maximum defrost time 14 minutes If the jumper is not removed once 5 seconds has elapsed 7 seconds total...

Page 16: ...the snow level below the louvered panels NOTE The filter and all access panels must be in place any time the unit is in operation If you are unsure about the filter required for your system call your...

Page 17: ...con firm that pipes are not rubbing copper to copper Also ensure that refrigerant pipes are not being af fected by indoor air contamination Check condition of insulation on the refrigerant lines Repai...

Page 18: ...e Supply Air Temperature Ambient Temperature Return Air Temperature System Refrigerant Charge Refer to manufacturer s information on unit or installation instructions for required subcooling and appro...

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