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6/14/2013

507004-01

*2P6142013*

*P507004-01*

E

2013 Lennox Industries Inc.

Dallas, Texas, USA

THIS MANUAL MUST BE LEFT WITH THE

HOMEOWNER FOR FUTURE REFERENCE

General

This XC25 outdoor unit is designed for use with HFC-410A
refrigerant only.
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.

THIS UNIT IS A INTEGRAL COMPONENT OF A SYSTEM THAT
WILL REQUIRE AN ICOMFORT 

WI-FI

®

 THERMOSTAT AND

ICOMFORT™ -ENABLED AIR HANDLER OR FURNACE.

XC25

iComfort 

WI-FI

®

IMPORTANT

: BEFORE APPLYING ANY POWER (MAIN, SOLAR

OR LOW VOLTAGE) TO THE OUTDOOR UNIT, THE FIELD MUST
CONFIRM ICOMFORT 

WI-FI

®

 THERMOSTAT HAS VERSION 2.1

OR HIGHER SOFTWARE. (REFERENCE ICOMFORT 

WI-FI

®

THERMOSTAT MANUAL

)

iComfort™-enabled

air handler or

furnace

INSTALLATION
INSTRUCTIONS

Dave Lennox 

Signature

®

Collection XC25 System

AIR CONDITIONERS
507004-01
6/14/2013
Supersedes 6/2013

PACKING LIST

OUTDOOR UNIT

WARRANTY
CARD

GROMMETS (2)

BUSHING (1)

RAST 6-PIN

CONNECTOR (1)

WARNING

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

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

STEP 1 -- SETTING THE UNIT -- Clearances

CONTROL

PANEL ACCESS

LOCATION

6 (152)

36 (914)

12 (305)

30 (762)

24

(610)

LINE SET

CONNECTIONS

ACCESS

PANEL

REAR VIEW OF UNIT

48 (1219)

MINIMUM CLEARANCE BETWEEN TWO UNITS

CLEARANCE ON ALL SIDES — INCHES (MILLIMETERS)

MINIMUM CLEARANCE

ABOVE UNIT

NOTES:

S

Clearance to access panel must be 30
inches (762mm).

S

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

S

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

Note: Dimensions are not to scale.

FIGURE 1

Litho U.S.A.

Summary of Contents for XC25 Series

Page 1: ...ATION INSTRUCTIONS Dave Lennox Signature Collection XC25 System AIR CONDITIONERS 507004 01 6 14 2013 Supersedes 6 2013 PACKING LIST OUTDOOR UNIT WARRANTY CARD GROMMETS 2 BUSHING 1 RAST 6 PIN CONNECTOR 1 WARNING Improper installation adjustment alteration service or maintenance can cause property damage personal inju ry or loss of life Installation and service must be performed by a licensed HVAC p...

Page 2: ... WOOD OR PLASTIC SLAB NO PLASTIC ANCHOR HOLE DRILL 1 8 INSTALL UNIT LEVEL OR IF ON A SLOPE MAINTAIN SLOPE TOLERANCE OF 2 DEGREES OR 2 INCHES PER 5 FEET 50 MM PER 1 5 M AWAY FROM BUILDING STRUCTURE MOUNTING SLAB BUILDING STRUCTURE GROUND LEVEL Outside Unit Placement Slab Mounting at Ground Level SAME FASTENERS AS SLAB SIDE MOUNTING IMPORTANT To help stabilize an outdoor unit some installations may ...

Page 3: ...ing this unit carefully stow all removed panels so that the panels will not cause injury to personnel objects or nearby structures Also take care to store panels where they will not be subject to damage e g being bent or scratched While handling or stowing the panels consider any weather conditions especially wind that may cause panels to be blown around and damaged UNIT DIMENSIONS INCHES MM 4 5 8...

Page 4: ...gas such as nitrogen to pressurize a refrigeration or air conditioning system use a regulator that can control the pressure down to 1 or 2 psig 6 9 to 13 8 kPa IMPORTANT Some scroll compressors have an internal vacuum protector that will unload scrolls when suction pres sure goes below 20 psig A hissing sound will be heard when the compressor is running unloaded Protector will reset when low press...

Page 5: ...65 40 40 feet 12 2 m 89J61 L15 65 50 50 feet 15 2 m 89J62 XC25 060 230 XX 3 8 10 mm 1 1 8 29 mm Field fabricated Applicable to all minor revision numbers unless otherwise specified Some applications may required a field provided 1 1 8 to 7 8 adapter Table 2 XC25 Line Set Guidelines Between 51 150 Linear Length Model Maximum Total Equivalent Length ft Maximum Linear actual Length ft Maximum Vapor R...

Page 6: ...he two Teflon rings 8 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 CLEAN HCFC 22 TO BE USED FOR FLUSHING Positioned to deliver liquid refrigerant LIQUID LINE SERVICE VALVE INLET DISCHARGE TANK RETURN CLOSED OPENED RECOVERY CYLINDER RECOVERY MACHINE NEW OUTDOOR ...

Page 7: ...ervice port nitrogen flow will have an exit point NITROGEN HIGH LOW B A C PIPING PANEL REMOVAL PREPARING LINE SET CAP AND CORE REMOVAL Remove piping panel to access service valves Cut ends of the refrigerant lines square free from nicks or dents and debur the ends The pipe must remain round Do not crimp end of the line Remove service cap and core from both the suction vapor and liquid line service...

Page 8: ...ated nitrogen at 1 to 2 psig through the refrigeration gauge set into the valve stem port connection on the liquid service valve and out of the suction vapor valve stem port See steps 3A 3B and 3C on previous page and below for manifold gauge setup 5 SUCTION VAPOR LINE WHEN BRAZING LINE SET TO SERVICE VALVES POINT FLAME AWAY FROM SERVICE VALVE LIQUID LINE WATER SATURATED CLOTHS WATER SATURATED CLO...

Page 9: ...LATION 1 2 3 4 5 6 7 8 9 10 11 12 1 8 Turn 1 Remove and discard either the flare seal cap or flare nut with copper flare seal bonnet from the equalizer line port on the vapor line as illustrated in the figure below 2 Remove the field provided fitting that temporarily reconnected the liquid line to the indoor unit s distributor assembly INDOOR EXPANSION VALVE INSTALLATION 3 Install one of the provi...

Page 10: ...the cylinder of HFC 410A refrigerant to the center port of the manifold gauge set Open the valve on the HFC 410A cylinder vapor only B Open the high pressure side of the manifold to allow HFC 410A into the line set and indoor unit Weigh in a trace amount of HFC 410A A trace amount is a maximum of two ounces 57 g refriger ant or three pounds 31 kPa pressure Close the valve on the HFC 410A cylinder ...

Page 11: ...p 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 positioned to deliver liquid refrigerant Open the manifold gauge valve 1 to 2 psig in order to release the vacuum in the line set and indoor unit G Perform the following S Close manifold gauge valves S Shut of...

Page 12: ...ake care during unit installation and service to protect the unit s electronic controls Precautions will help to avoid control exposure to electrostatic discharge by putting the unit the control and the technician at the same electrostatic potential Touch hand and all tools on an unpainted unit surface before performing any service procedure to neutralize electrostatic charge Refer to the unit nam...

Page 13: ...inals PUSH BUTTON 7 SEGMENT DISPLAY PUMP DOWN WHEN UNIT IS IN PUMP DOWN MODE Pd WILL BE DISPLAYED ON 7 SEGMENT TO ACTIVATE PUMP DOWN MODE THE CONTROL MUST BE IN THE IDLE STATE AND THE PUMP DOWN JUMPER PLACED ACROSS THE TWO PUMP DOWN PINS TO DEACTIVATE REMOVE JUMPER FIGURE 10 ...

Page 14: ... nut to bundle the four unused wires at each end of the cable Each bundle should also include an additional wire that should be connected on each end to the C terminal as shown in the figure below Any excess high voltage field wiring should be trimmed and secured away from any low voltage field wiring To facilitate a conduit a cutout is located side panel of the control box Connect conduit to the ...

Page 15: ...ater i e sprinkler systems soakers waste water etc will corrode the surface of steel and aluminum parts diminish performance and affect longevity of the unit Outdoor Coil The outdoor unit must be properly maintained to ensure its proper operation S Please contact your dealer to schedule proper inspec tion and maintenance for your equipment S Make sure no obstructions restrict airflow to the outdoo...

Page 16: ...ture Return Air Temperature HEATING MODE Vapor Pressure Liquid Pressure 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 approach temperatures Subcooling A B SUBCOOLING Saturated Condensing Temperature A minus Liquid Line Temperature B Approach A B APPROAC...

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