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2016 Lennox Industries Inc.

Dallas, Texas, USA

THIS MANUAL MUST BE LEFT WITH THE

HOMEOWNER FOR FUTURE REFERENCE

General

This SL18XC1 outdoor air conditioner with 

all-aluminum

coil

 is designed for use with HFC-410A refrigerant only.

This unit must be installed with an approved indoor air han­
dler or coil. See the Lennox SL18XC1 Product Specifica­
tions bulletin (EHB) for approved indoor component match
ups.
These instructions are intended as a general guide and do
not supersede local codes in any way. Consult authorities
having jurisdiction before installation.

NOTICE !

For more in-depth information, consult the Installa­
tion and Service Procedures manual, available as
Corp. 1405-L10 on DaveNet or through the Technical
Support department at 800-453-6669.

INSTALLATION
INSTRUCTIONS

Dave Lennox 

Signature

®

Collection SL18XC1 System

AIR CONDITIONERS
507353-01
7/2018

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
professional installer (or equivalent) or service agency.

CAUTION

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

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).

FIGURE 1

Содержание XC21-024

Страница 1: ...RUCTIONS Dave Lennox Signature Collection SL18XC1 System AIR CONDITIONERS 507353 01 7 2018 WARNING Improper installation adjustment alteration service or maintenance can cause property damage personal...

Страница 2: ...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 CAUTION As with...

Страница 3: ...e and uneven surfaces Concrete slab use two plastic anchors hole drill 1 4 COIL BASE PAN CORNER POST STABILIZING BRACKET 18 GAUGE METAL 2 WIDTH HEIGHT AS REQUIRED 10 X 1 2 LONG SELF DRILLING SHEET MET...

Страница 4: ...erforming any service procedure to neutralize electrostatic charge NOTE For proper voltages select control wires gauge per table below WIRE RUN LENGTH AWG INSULATION TYPE LESS THAN 100 30 METERS 18 TE...

Страница 5: ...ontinued Outdoor Control A175 Jumpers and Terminals 55 50 DEGREE TARGET 45 DEGREE TARGET 40 DEGREE TARGET DEFAULT 55 50 45 40 55 50 45 40 55 50 45 40 55 50 45 40 DEGREE TARGET 30 0 30 SECOND DELAY SEC...

Страница 6: ...o stage electric heat cut factory installed metal link between W1 and W2 Then connect thermostat wire between the air handler control s W2 and the thermostat s W2 terminal 5 Cut on board link clippabl...

Страница 7: ...existing traps Polyol es ter POE oils are used in Lennox units charged with HFC 410A refrigerant Residual mineral oil can act as an insulator preventing proper heat transfer It can also clog the expa...

Страница 8: ...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 DIS...

Страница 9: ...ort 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...

Страница 10: ...ter saturated cloths under the valve body to protect the base paint 4FLOW NITROGEN Flow regulated nitrogen at 1 to 2 psig through the refrigeration gauge set into the valve stem port connection on the...

Страница 11: ...SION VALVE KIT MATCH UPS AND APPLICATION INFORMATION 1 REMOVE THE FIELD PROVIDED FITTING THAT TEMPORARILY RECON NECTED THE LIQUID LINE TO THE INDOOR UNIT S DISTRIBUTOR ASSEM BLY 2 INSTALL ONE OF THE P...

Страница 12: ...linder 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...

Страница 13: ...IGH LOW NITROGEN CONNECT GAUGE SET A B C D LINE SET AND INDOOR COIL NOTE Remove cores from service valves if not already done FIGURE 16 EVACUATE LINE SET AND INDOOR COIL The unit is shipped with a fac...

Страница 14: ...rigerant Open the mani fold gauge valve 1 to 2 psig in order to release the vac uum in the line set and indoor unit 9 Perform the following S Close manifold gauge valves S Shut off HFC 410A cylinder S...

Страница 15: ...and clean as neces sary 4 Inspect the condition of refrigerant piping and confirm that pipes are not rubbing copper to copper Also check the condition of the insulation on the refrigerant lines Repair...

Страница 16: ...Up and Performance Checklist Customer Address Indoor Unit Model Serial Outdoor Unit Model Serial Solar Module Mfg and Model Serial Notes START UP CHECKS Refrigerant Type Rated Load Amps Actual Amps Ra...

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