NAPOLEON WTACR0018RA1-N Manuel utilisateur

IOM

W415-3148 / A / 10.04.23

SEER2 13.4 & SEER2 14.3 CENTRAL AIR CONDITIONERS

Wolf Steel Ltd., 24 Napoleon Rd., Barrie, ON, L4M 0G8 Canada /

103 Miller Drive, Crittenden, Kentucky, USA, 41030

• Phone (866) 820-8686 • [email protected] •

• www.napoleon.com •

MANUFACTURER RESERVES THE RIGHT TO DISCONTINUE, OR CHANGE AT ANY TIME,

SPECIFICATIONS OR DESIGNS WITHOUT NOTICE AND WITHOUT INCURRING OBLIGATIONS.

INSTALLATION AND OPERATING

INSTRUCTIONS

Certiﬁed to CSA C22.2 No. 60335-2-40:17

• SEER2 13.4 & SEER2 14.3 eciencies

• Capacities from 1.5 ton to 5.0 tons

• Utilizes environmentally friendly R-410A refrigerant

• High Eciency Compressors

• Micro Channel Condenser

• Swept Fan Blades

Congratulations on the purchase of your Napoleon Air Conditioner.

Napoleon’s line of Split Air Conditioners oer industry leading quality

and are equipped with multiple advanced features:

FEATURES:

INSTALLER: PLEASE FAMILIARIZE YOURSELF WITH THIS MANUAL BEFORE

PROCEEDING WITH THE INSTALLATION. LEAVE THIS MANUAL

WITH THE APPLIANCE FOR FUTURE REFERENCE.

CONSUMER: RETAIN THIS MANUAL FOR FUTURE REFERENCE.

INSPECT THE SHIPPING CONTAINER IMMEDIATELY UPON RECEIVING YOUR UNIT. ANY DAMAGE SHOULD BE NOTED ON

FREIGHT BILL BEFORE SIGNING AND CLAIMS SHOULD BE FILLED WITH CARRIER AS SOON AS POSSIBLE. MAKE SURE

THAT RATING PLATE MATCHES THE MODEL NUMBER YOU PURCHASED.

ELECTRICAL SHOCK, FIRE OR EXPLOSION

HAZARD. FAILURE TO FOLLOW SAFETY

WARNINGS AND INSTRUCTIONS EXACTLY

COULD RESULT IN SERIOUS INJURY, DEATH

OR PROPERTY DAMAGE.

THIS INFORMATION IS INTENDED FOR USE

BY QUALIFIED HVAC TECHNICIANS

POSSESSING ADEQUATE BACKGROUNDS OF

ELECTRICAL AND MECHANICAL

EXPERIENCE. ANY ATTEMPT TO REPAIR A

CENTRAL AIR CONDITIONING PRODUCT

MAY RESULT IN PERSONAL INJURY AND/OR

PROPERTY DAMAGE. THE MANUFACTURER

OR SELLER CANNOT BE RESPONSIBLE

FOR THE INTERPRETATION OF THIS

INFORMATION, NOR CAN IT ASSUME ANY

LIABILITY IN CONNECTION WITH ITS USE.

UNIT CONTAINS R-410A REFRIGERANT

AND POE COMPRESSOR OIL! USE ONLY

R-410A REFRIGERANT AND APPROVED POE

COMPRESSOR OIL. REFRIGERANT LINES

MUST BE BRAZED AND RATED FOR

R-410A PRESSURES!

PROPER SERVICE EQUIPMENT IS REQUIRED.

USE ONLY R-410A APPROVED SERVICE

EQUIPMENT. FAILURE TO USE PROPER

SERVICE TOOLS MAY RESULT IN EQUIPMENT

DAMAGE OR PERSONAL INJURY.

INSTALLATION SHALL BE MADE IN

ACCORDANCE WITH THE REQUIREMENTS

OF THE LOCAL UTILITY AND OTHER

AUTHORITIES HAVING JURISDICTION,

THE NATIONAL ELECTRICAL CODE IN THE

UNITED STATES AND THE CANADIAN

ELECTRICAL CODE CSA C22.1 PART 1

(LATEST EDITION) IN CANADA. ANY

ALTERATION OF INTERNAL WIRING WILL

VOID CERTIFICATION AND WARRANTIES.

WARNING !

!

CAUTION

! !

2

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W415-3148 / A / 10.04.23

TABLE OF CONTENTS

1. MODEL NOMENCLATURE ..... .................................................................................................................................2

2. OVERVIEW ............................... .................................................................................................................................3

3. SAFETY ..................................... .................................................................................................................................3

3.1 SAFETY SYMBOLS ............................................................................................................................................................. 3

3.2 SAFETY RULES ............................................................................................................................................................................. 4

3.3 CODES ............................................................................................................................................................................................. 5

4. LIMITATIONS ............................ .................................................................................................................................5

5. LOCATION AND CLEARANCE ......................................................................................................................6

5.1 CLEARANCE ............................................................................................................................................................................. 6

5.2 LOCATION RESTRICTIONS ............................................................................................................................................................. 6

6. INSTALLATION ........................ .................................................................................................................................7

6.1 SUPPORT ............................................................................................................................................................................. 7

6.2 UNIT PLACEMENT ............................................................................................................................................................. 7

6.3 REFRIGERANT LINE SET INSTALLATION ............................................................................................................................ 8

7. EVACUATION ........................... ...............................................................................................................................13

7.1 EVACUATE THE REFRIGERANT LINES AND INDOOR COIL .......................................................................................... 13

8. SERVICE VALVES ................... ...............................................................................................................................14

8.1 OPEN THE SERVICE VALVES ........................................................................................................................................... 14

9. ELECTRICAL .......................... ...............................................................................................................................15

9.1 HIGH VOLTAGE ........................................................................................................................................................................... 15

10. S TART U P ................................. ...............................................................................................................................19

11. SYSTEM CHARGE ADJUSTMENT ....................................................................................................................20

11.1 SYSTEM TOTAL CHARGE ........................................................................................................................................................... 20

11.2 ADJUSTING SYSTEM CHARGE FOR SYSTEMS USING THERMOSTATIC EXPANSION VALVES ......................... 20

11.3 ADJUSTING SYSTEM CHARGE FOR SYSTEMS USING FIXED ORIFICE .......................................................................... 21

11.4 RECORD SYSTEM INFORMATION ........................................................................................................................................... 21

12. CHECKOUT PROCEDURES .. ...............................................................................................................................22

12.1 INSTRUCTING THE OWNER ........................................................................................................................................... 22

12.2 CHECKOUT PROCEDURE ........................................................................................................................................................... 22

12.3 SYSTEM OPERATION CHECKOUT PROCEDURE .......................................................................................................... 22

13. AIR CONDITIONING TROUBLESHOOTING .......................................................................................................23

14. MAINTENANCE ....................... ...............................................................................................................................25

14.1 INDOOR ........................................................................................................................................................................................... 25

14.2 OUTDOOR ........................................................................................................................................................................... 25

15. REPLACEMENT PARTS ........ ...............................................................................................................................26

15.1 PARTS LIST ........................................................................................................................................................................... 26

15.2 EXPLODED VIEW ........................................................................................................................................................................... 28

15.3 ACCESSORIES ........................................................................................................................................................................... 29

16. WARRANTY .............................. ...............................................................................................................................30

17. SERVICE HISTORY ................. ...............................................................................................................................31

18. OWNER’S SERVICE INFORMATION .......................................................................................................32

19. NOTES ...................................... ...............................................................................................................................33

1. MODEL NOMENCLATURE

SHIPPING INSPECTION: The unit is shipped in one package, completely assembled and wired. Inspect

the shipping container immediately upon receiving your unit. If it appears that damage has occurred, it should

be noted on the freight bill before signing. Damage claims should be led with the carrier as quickly as

possible. Check the rating plate (at the front of the access panel) to conrm cooling capacities. The unit MUST

be operated only with the type of refrigerant, oil and electrical supply noted on the rating plate.

C

Type

A

SEER2 Rating

R

Compressor Type

T

Configuration

T=Top Discharge / S=Side Discharge

W

Wolf

A = 13.0-13.9

B = 14.0-14.9

C = 15.0-15.9

D = 16.0-16.9

E = 17.0-17.9

F = 18.0-18.9

G = 19.0-19.9

H = 20.0-20.9

C = Air Conditioner

H = Heat Pump

00 None

18 = 1.5 Tons

24 = 2.0 Tons

30 = 2.5 Tons

36 = 3.0 Tons

42 = 3.5 Tons

48 = 4.0 Tons

60 = 5.0 Tons

00

1st Capacity

R = Rotary Fixed

S = Scroll Fixed

V = Rotary Variable

18

2nd Capacity

R

Ref. Gas

A

Major Revision

A

B

C

1

Minor Revision

1

2

3

N

Brand

N = Napoleon

C = Continental

R = R410A

-

3

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W415-3148 / A / 10.04.23

These instructions cover installation of Napoleon Split System Air Conditioners. Napoleon’s line of Split Air

Conditioners oer industry leading quality and reliability. All outdoor units have been factory run-tested and

ready for easy installation.

Napoleon’s line of Split Air Conditioners are designed to perform for many years. These instructions are

intended as an aid to the licensed service technician to properly install the unit. Improper installation may

damage equipment, void the warranty, and can create a hazard, resulting in property damage, injury or death.

Our air conditioning systems and components are designed to be installed by qualied HVAC technicians

ONLY. The installation of air conditioning systems includes electrical and refrigerant connections and is

regulated by a multiple sets of laws, codes and guidelines, at the federal, state and local levels. It is the

installer’s responsibility to install the product in accordance with all applicable codes and regulations. It is the

homeowner’s responsibility to properly maintain the equipment. NO WARRANTY is oered for the products

that were installed by unlicensed/unauthorized persons. Failure to comply with this policy could lead to

violations of applicable laws that are punishable.

Documentation and specications are continuously updated and subject to change. Please download the latest

version of specications and manuals at http://www.napoleon.com.

2. OVERVIEW

3. SAFETY

3.1 SAFETY SYMBOLS

Understand and pay particular attention to the words DANGER, WARNING, and CAUTION and the following

de ned symbols are used throughout this manual to notify the reader of potential hazards of varying risk levels.

HIGHLIGHTS SUGGESTIONS WHICH WILL RESULT IN ENHANCED INSTALLATION,

RELIABILITY, OR OPERATION.

NOTE

INDICATES A POTENTIALLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED,

COULD RESULT IN DEATH OR SERIOUS INJURY.

WARNING

!

SUGGESTS IMPORTANT PROCEDURE STEPS TO INSURE PROPER INSTALLATION,

RELIABILITY, OR OPERATION.

IMPORTANT

! !

INDICATES AN IMMINENTLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, WILL

RESULT IN DEATH OR SERIOUS INJURY.

DANGER

! !

INDICATES A POTENTIAL HAZARDOUS SITUATION WHICH, IF NOT AVOIDED, MAY

RESULT IN MINOR OR MODERATE INJURY. IT MAY ALSO BE USED TO ALERT

AGAINST UNSAFE PRACTICES.

CAUTION

! !

H3.3.2. Safety Symbols

C

Type

A

SEER2 Rating

R

Compressor Type

T

Configuration

T=Top Discharge / S=Side Discharge

W

Wolf

A = 13.0-13.9

B = 14.0-14.9

C = 15.0-15.9

D = 16.0-16.9

E = 17.0-17.9

F = 18.0-18.9

G = 19.0-19.9

H = 20.0-20.9

C = Air Conditioner

H = Heat Pump

00 None

18 = 1.5 Tons

24 = 2.0 Tons

30 = 2.5 Tons

36 = 3.0 Tons

42 = 3.5 Tons

48 = 4.0 Tons

60 = 5.0 Tons

00

1st Capacity

R = Rotary Fixed

S = Scroll Fixed

V = Rotary Variable

18

2nd Capacity

R

Ref. Gas

A

Major Revision

A

B

C

1

Minor Revision

1

2

3

N

Brand

N = Napoleon

C = Continental

R = R410A

-

4

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W415-3148 / A / 10.04.23

THIS INFORMATION IS INTENDED FOR USE BY QUALIFIED HVAC TECHNICIANS

POSSESSING ADEQUATE BACKGROUNDS OF ELECTRICAL AND MECHANICAL

EXPERIENCE. ANY ATTEMPT TO REPAIR A CENTRAL AIR CONDITIONING PRODUCT MAY

RESULT IN PERSONAL INJURY AND/OR PROPERTY DAMAGE. THE MANUFACTURER OR

SELLER CANNOT BE RESPONSIBLE FOR THE INTERPRETATION OF THIS INFORMATION,

NOR CAN IT ASSUME ANY LIABILITY IN CONNECTION WITH ITS USE.

UNIT CONTAINS R-410A REFRIGERANT AND POE COMPRESSOR OIL.

USE ONLY R-410A REFRIGERANT AND APPROVED POE COMPRESSOR OIL.

REFRIGERANT LINES MUST BE BRAZED AND RATED FOR R410 PRESSURES!

PROPER SERVICE EQUIPMENT IS REQUIRED. USE ONLY R-410A APPROVED SERVICE

EQUIPMENT. FAILURE TO USE PROPER SERVICE TOOLS MAY RESULT IN EQUIPMENT

DAMAGE OR PERSONAL INJURY.

DURING INSTALLATION, TESTING, SERVICING, AND TROUBLESHOOTING OF THIS

PRODUCT, IT MAY BE NECESSARY TO WORK WITH ELECTRICAL COMPONENTS.

THERE IS A RISK OF ELECTRIC SHOCK. IT CAN CAUSE INJURY OR DEATH:

DISCONNECT ALL REMOTE ELECTRIC POWER SUPPLIES BEFORE SERVICING!

HOT SURFACE! DO NOT TOUCH TOP OF COMPRESSOR.

COMPRESSOR AND DISCHARGE PIPES MAY BE EXTREMELY HOT.

IT MAY CAUSE MINOR TO SEVERE BURNING.

ALL R-410A SYSTEMS USE POE OIL. POE OIL EASILY ABSORBS MOISTURE FROM THE

AIR. A SYSTEM WHICH HAS BEEN EXPOSED TO THE ATMOSPHERE FOR MORE THAN

4 HOURS REQUIRES THAT THE COMPRESSOR OIL BE REPLACED. NEVER BREAK A

VACUUM WITH AIR AND ALWAYS CHANGE THE FILTER DRIER WHEN OPENING THE

SYSTEM FOR COMPONENT REPLACEMENT.

WARNING

! !

WARNING

! !

CAUTION !

!

CAUTION !

!

H3.3_AC

H3.4.3_AC

THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED SERVICE PERSONNEL

FOR PROPER INSTALLATION, ADJUSTMENT AND OPERATION OF THIS UNIT. READ THESE

INSTRUCTIONS THOROUGHLY BEFORE ATTEMPTING INSTALLATION OR OPERATION.

FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION,

ADJUSTMENT, SERVICE OR MAINTENANCE, POSSIBLY RESULTING IN FIRE, ELECTRICAL

SHOCK, EXPLOSION, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

WARNING

! !

3.2 SAFETY RULES

H6.0

IMPORTANT:

READ THE FOLLOWING INSTRUCTIONS COMPLETELY BEFORE INSTALLING!

USE ONLY AUTHORIZED HVAC PARTS. USE OF OTHER PARTS MAY VOID WARRANTY OR

ADVERSELY IMPACT PERFORMANCES.

NOTE

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W415-3148 / A / 10.04.23

3.3 CODES

H6.3_AC

This unit must be installed in accordance with all local codes, by-laws and regulations by those

authorities having jurisdiction.

Electrical connections must be made in accordance with:

a. Canada: current edition of CAN/CSA C22.1 and C22.2, Canadian Electrical Code (Part 1 and 2).

b. United States: current edition of ANSI/NFPA 70, National Electrical Code.

Codes and additional information may be obtained from:

Canadian Standards Association

5060 Spectrum Way

Mississauga, Ontario, L4W 5N6

Phone: (416) 747-4000

website: www.csa.ca

National Fire Protection Association

1 Batterymarch Park

Quincy, MA, 02169-7471

Phone: (617) 770-3000

website: www.nfpa.org

American Gas Association

400 North Capitol Street, NW,

Suite 450

Washington DC, 20001

Phone: (202) 824-7000

website: www.aga.org

1. Only trained service technicians familiar with standard

service instructions and training materials should

attempt installation, service, and repair of these units.

Failure to follow these instructions may result in

improper installation, adjustment, alteration, service,

maintenance, or use that can cause explosion, re,

electrical shock, or other conditions which may cause

death, personal injury, or property damage. For

information or assistance, consult a qualied installer,

service agency, your distributor or branch.

2. Unit contains R-410A refrigerant and POE compressor

oil! Use only R-410A refrigerant and approved POE

compressor oil. Refrigerant lines must be brazed and

rated for R-410A pressures!

3. Follow all safety codes.

4. Wear safety glasses, protective clothing, and work

gloves.

5. Have re extinguisher available.

6. Read instructions thoroughly and follow all warnings or

cautions included in literature and attached to the unit.

Consult federal, provincial, state, and local codes for

special requirements.

The unit should be installed in accordance with all National, Provincial/State and Local Safety Codes and the

limitations listed below:

1. Limitations for the indoor unit, coil, and appropriate accessories must also be observed.

2. The outdoor unit must not be installed with any duct work in the air stream. The outdoor fan is the propeller

type and is not designed to operate against any additional external static pressure.

3. The maximum and minimum conditions for operation must be observed to assure a system that will give

maximum performance with minimum service.

4. The unit should not be operated at outdoor temperatures below 50° F without an approved low ambient

operation accessory kit installed.

Ambient Air Temperature

on Outdoor Coil

Air Temperature

on Indoor Coil

Min. DB

Max. DB

Min. WB

Max. WB

50 °F (10 °C)

115 ° F (46 °C)

57 °F (14 °C)

72 °F (22 °C)

TABLE 1.

H3.95

REFRIGERANT UNDER PRESSURE!

ALWAYS PRACTICE SAFE HANDLING OF

REFRIGERANTS. FAILURE TO FOLLOW PROPER

PROCEDURES MAY CAUSE PROPERTY DAMAGE,

PERSONAL INJURY OR DEATH.

REFRIGERANTS ARE HEAVIER THAN AIR AND

CAN CAUSE SUFFOCATION. TO AVOID

POSSIBLE DIFFICULTY IN BREATHING OR

DEATH:

• NEVER PURGE REFRIGERANT INTO AN

ENCLOSED ROOM OR SPACE. BY LAW, ALL

REFRIGERANTS MUST BE RECLAIMED.

• IF AN INDOOR LEAK IS SUSPECTED,

THOROUGHLY VENTILATE THE AREA BEFORE

BEGINNING WORK.

• LIQUID REFRIGERANT CAN BE VERY COLD.

TO AVOID POSSIBLE FROSTBITE OR BLIND-

NESS, AVOID CONTACT AND WEAR GLOVES

AND GOGGLES. IF LIQUID REFRIGERANT

DOES CONTACT YOUR SKIN OR EYES, SEEK

MEDICAL HELP IMMEDIATELY.

•

NEVER BURN REFRIGERANT, AS POISONOUS

GAS WILL BE PRODUCED.

WARNING

! !

4. LIMITATIONS

6

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W415-3148 / A / 10.04.23

The minimum clearances required for installation

and accessibility are shown below. These clearances

should be followed unless otherwise approved by the

manufacturer.

• Ensure the top discharge area is unrestricted for at

least 60” above the unit (Figure 1.).

• Clearance must be provided in front of the access

panel for servicing and adequate airow around the

cabinet as shown on Fig.1, 2 & 3.

• The distance in between two or more units will be

24” minimum.

12”

Service

Access

Panel Service

Access

Panel

Min

MIN. 24” clearance

for service

from one side

wall

shrubs

wall

24”

12”

Service

Access

Panel Service

Access

Panel

Min

MIN. 24” clearance

for service

from one side

wall

shrubs

wall

24”

• Do not locate unit close to bedrooms or areas where

operational sounds may be objectionable (Fig. 4).

• Outdoor unit location must be far enough away from

any structure to prevent excess runo water from

pouring directly on to the unit (Fig. 5). Check with

National and Local Codes.

2

3

5

4

12”

60”

12”

Unrestricted

Shrubs

Wall

24”

Unrestricted

ACCESS

PANEL

ACCESS

PANEL

1

5. LOCATION AND CLEARANCE

5.1 CLEARANCE

5.2 LOCATION RESTRICTIONS

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W415-3148 / A / 10.04.23

6. INSTALLATION

6.1 SUPPORT

6.2 UNIT PLACEMENT

Support pad:

1. The pad must be:

a. separate from any structure.

b. properly sized according to the size of the

cabinet. No portion of the cabinet shall

overhang beyond the pad (Fig. 6).

2. The pad must be level (Fig. 7). The pad location

must comply with National, State, and Local codes.

3. Remove screws holding four brackets to the pallet

and lift o the clips (Fig. 8).

4. Center, position and place the unit onto pad (Fig. 9).

BEFORE INSTALLATION, REMOVE THE SHIPPING

BRACKETS.

IMPORTANT !

!

Grade

2” min

6

LEVEL

7

8

9

8

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W415-3148 / A / 10.04.23

100’ (30m) max

10

• Maximum line

length = 100 feet.

6.3 REFRIGERANT LINE SET INSTALLATION

6.3.1 Refrigerant Piping Limitations

60’ (18m) max

11

60’ (18m) max

12

• Maximum vertical

height = 60 feet.

• Maximum vertical height = 60 feet.

• Compressor crankcase heater is required for

line lengths over 60 feet.

• Use only the line diameters indicated in

TABLE 2.

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6.3.2 Refrigerant Line and Service Valve Connection Sizes

MODEL

Line Sizes Service Valve Connection Sizes

Vapor Line Liquid Line

Vapor Line

Connection

Liquid Line

Connection

1.5 Tons 3/4 3/8 3/4 3/8

2.0 Tons 3/4 3/8 3/4 3/8

2.5 Tons 3/4 3/8 3/4 3/8

3.0 Tons

3/4

3/8

3/4

3/8

3.5 Tons 7/8 3/8 7/8 3/8

4.0 Ton s 7/8 3/8 7/8 3/8

5.0 Ton s 7/8 3/8 7/8 3/8

PIPING CONNECTIONS

The outdoor condensing unit must be connected to the matched indoor evaporator coil using eld supplied

refrigerant grade (ACR) copper tubing that is internally clean and dry. Units should be installed only with the

tubing sizes for approved system combinations as specied in Table 2.

• USING A LARGER THAN SPECIFIED LINE SIZE COULD RESULT IN OIL RETURN PROBLEMS.

• USING TOO SMALL A LINE WILL RESULT IN LOSS OF CAPACITY AND OTHER PROBLEMS CAUSED BY

INSUFFICIENT REFRIGERANT FLOW.

• SLOPE HORIZONTAL VAPOR LINES AT LEAST 1” EVERY 20 FEET TOWARD THE OUTDOOR UNIT TO

FACILITATE PROPER OIL RETURN.

NOTE

TABLE 2.

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6.3.3 Line Brazing

1. Remove plastic caps from the service valve

connections. Remove the pressure port caps

and valve cores from pressure service ports

(Fig. 13).

Pressure

Service Port

Valve Core

Pressure Port Cap

Service Valve Cap

13

Insert Lines

14

Purge Dry

Nitrogen

IN

OUT

Dry

Nitrogen

15

2. Install lines into service valve connections

(Fig. 14).

3. Purge the refrigerant line and indoor coil with dry

nitrogen (Fig. 15). Continue to purge until whole

brazing process is complete.

WARNING

!!

WARNING

!!

DO NOT REMOVE SERVICE VALVE CAPS

UNTIL SECTION 7.

WARNING

!!

NEVER ATTEMPT TO REPAIR ANY BRAZED

CONNECTIONS WHILE THE SYSTEM IS

UNDER PRESSURE. PERSONAL INJURY

COULD RESULT.

CAUTION

! !

DRY NITROGEN SHOULD ALWAYS

BE SUPPLIED THROUGH THE TUBING

WHILE IT IS BEING BRAZED, BECAUSE

THE TEMPERATURE REQUIRED IS HIGH

ENOUGH TO CAUSE OXIDATION OF

THE COPPER UNLESS AN INERT ATMO-

SPHERE IS PROVIDED. THE FLOW OF DRY

NITROGEN SHOULD CONTINUE UNTIL

THE JOINT HAS COOLED. ALWAYS USE

A PRESSURE REGULATOR AND SAFE-

TY VALVE TO INSURE THAT ONLY LOW

PRESSURE DRY NITROGEN IS INTRO-

DUCED INTO THE TUBING. ONLY A SMALL

FLOW IS NECESSARY TO DISPLACE AIR

AND PREVENT OXIDATION.

REFRIGERANT LINES MUST BE BRAZED

AND RATED FOR R-410A PRESSURE!

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Dry Nitrogen

IN

Nitrogen

OUT

Wet Rag

Braze 2

2

17

Braze 1

1

Dry Nitrogen

IN

Nitrogen

OUT

Wet Rag

16

18

4. Brazing steps:

a. Wrap a wet rag around the valve body to

avoid heat damage and continue the dry

nitrogen purge.

b. Braze the refrigerant lines to the service

valves (Fig. 16 and Fig. 17).

5. Continue to purge until whole brazing process is

complete (Fig. 17).

WHEN BRAZING LINE SET TO SERVICE

VALVES POINT FLAME AWAY FROM

SERVICE VALVE.

IMPORTANT

! !

ONCE THE BRAZING IS COMPLETE,

REMOVE THE WET RAG BEFORE

STOPPING THE DRY NITROGEN PURGE.

IMPORTANT

! !

6. Reinstall the valve cores to service ports

(Fig. 18).

CAUTION

! !

AVOID BREATHING VAPORS OR FUMES FROM

BRAZING OPERATIONS.

PERFORM OPERATIONS ONLY IN WELL−

VENTILATED AREAS.

WEAR GLOVES AND PROTECTIVE GOGGLES

OR FACE SHIELD TO PROTECT AGAINST

BURNS.

WASH HANDS WITH SOAP AND WATER AFTER

HANDLING BRAZING ALLOYS AND FLUX.

12

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• The Vapor Line must always

be insulated (Fig. 21).

• DO NOT allow the liquid line and

vapor line to come in direct (metal

to metal) contact to each other.

Test for leak

• Pressurize the refrigerant lines and

evaporator coil to 350-400 PSIG using dry

nitrogen (Fig. 19). The nitrogen pressure

must be maintained for few minutes.

• If pressure decay is observed,

it is an indication of leak(s).

• Check for leaks by using a soap

solution at each brazed joint (Fig. 20).

19

20

21

6.3.4 Refrigerant Line Leak Test

6.3.5 Refrigerant Line Insulation

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7. EVACUATION

7.1 EVACUATE THE REFRIGERANT LINES AND INDOOR COIL

• Connect the vacuum pump to evacuate

the refrigerant line set and indoor coil.

• Evacuate until the micron gauge

reads no higher than 350 microns

or less (Fig. 22), then close OFF the

valve to the vacuum pump.

• Observe the micron gauge. Evacuation

is complete if the micron gauge

does not rise above 500 microns in

one minute and no more the 1000

microns in 10 minutes (Fig. 23).

• When vacuum pressure rises more

then 1000 microns but holds steady

below 2000 microns it indicates the

presence of moisture and/or non-

condensible or presence of small

leak. If vacuum pressure stays

constantly at 2000 microns or it rises,

it indicates the presence of leak.

• If the leak is found, perform the

necessary repair and repeat

the evacuation process.

• Once evacuation is complete, close the

valves on the manifold gauge set, turn

o and disconnect the vacuum pump.

WARNING

!!

DO NOT OPEN THE SERVICE VALVES UNTIL THE REFRIGERANT LINES AND INDOOR

COIL LEAK CHECK AND EVACUATION ARE COMPLETE. REFRIGERANT CAN LEAK AND

MAY CAUSING MILD TO SEVERE BURNS.

SCALE

OFF

350

ON

MICRONS

DIGITAL MICRON GAUGE

22

10 min

Max 1000 microns

23

SCALE

OFF

350

ON

MICRONS

DIGITAL MICRON GAUGE

14

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W415-3148 / A / 10.04.23

8. SERVICE VALVES

8.1 OPEN THE SERVICE VALVES

EXTREME CAUTION MUST BE EXERCISED WHEN OPENING THE LIQUID LINE SERVICE

VALVE. TURN COUNTERCLOCKWISE UNTIL THE VALVE STEM JUST TOUCHES THE

ROLLED EDGE. NO TORQUE IS REQUIRED. FAILURE TO FOLLOW THIS WARNING WILL

RESULT IN ABRUPT RELEASE OF SYSTEM CHARGE AND MAY RESULT IN PERSONAL

INJURY AND/OR PROPERTY DAMAGE.

WARNING !

!

LEAK CHECK AND EVACUATION MUST

BE COMPLETED BEFORE OPENING THE

SERVICE VALVES.

IMPORTANT !

!

1. Remove the cap from vapor service

valve (Fig. 24)

2. Fully insert Allen key into the stem

and rotate counterclockwise until

valve stem just touches the rolled

edge.

3. Replace the valve stem cap. Tighten

the cap nger tight with an additional

1/6 turn.

4. Repeat STEPS 1 - 3 for Liquid

Service Valve.

Allen Key

Rolled Edge

Service Port

Service Valve

Cap

24

CAUTION

! !

THE VAPOR LINE SERVICE VALVE MUST

BE OPENED FIRST BEFORE OPENING THE

LIQUID LINE SERVICE VALVE.

15

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W415-3148 / A / 10.04.23

9.1.1 High Voltage Power Supply

• The high voltage power supply must agree

with the equipment nameplate located on the

service panel cover (Fig. 25).

• Power wiring must comply with national, state,

and local codes. The wiring diagram is located

on the back side of the electrical cover.

25

9. ELECTRICAL

9.1 HIGH VOLTAGE

DURING INSTALLATION, TESTING, SERVICING, AND TROUBLESHOOTING OF THIS

PRODUCT, IT MAY BE NECESSARY TO WORK WITH ELECTRICAL COMPONENTS. THERE

IS A RISK OF ELECTRIC SHOCK THAT CAN CAUSE INJURY OR DEATH:

DISCONNECT ALL REMOTE ELECTRIC POWER SUPPLIES BEFORE SERVICING.

WARNING !!

ONLY COPPER CONDUCTORS MUST BE USED FOR ALL FIELD WIRING AND BE IN

ACCORDANCE WITH LOCAL, NATIONAL, FIRE, SAFETY AND ELECTRICAL CODES.

THIS UNIT MUST BE GROUNDED WITH A SEPARATE GROUND WIRE IN ACCORDANCE

WITH THE CODES MENTIONED ABOVE.

WARNING !

!

Make sure that electrical supply meets the values specied on the unit nameplate and wiring label. Power

wiring, disconnect switches, control (low voltage) wiring and over current protection must be supplied by the

installer. Wire size must be sized per National and Local Electrical codes requirements.

For units with rotary type compressor, identiﬁed by the letter R in the model number (example: WTACR)

a hard start capacitor must be installed if the system employs a non-bleed type TXV. Refer to section

9.1.6 for wiring and section 15.3 for recommended kit part number.

H3.80

WARNING !

!

SHUT OFF ELECTRICAL POWER AT THE FUSE BOX OR SERVICE PANEL BEFORE

MAKING ANY ELECTRICAL CONNECTIONS. FAILURE TO DO SO CAN CAUSE ELECTRICAL

SHOCK RESULTING IN PERSONAL INJURY OR DEATH.

• THE AIR CONDITIONER CABINET MUST HAVE AN UNINTERRUPTED GROUND.

• A GROUND LUG IS PROVIDED IN THE ELECTRICAL JUNCTION BOX.

• DO NOT USE REFRIGERANT PIPING AS A GROUND.

FAILING TO GROUND THE AIR CONDITIONER PROPERLY CAN RESULT IN ELECTRIC

SHOCK RESULTING IN PERSONAL INJURY OR DEATH.

NOTE

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W415-3148 / A / 10.04.23

9.1.2 High Voltage Disconnect Switch

9.1.3 High Voltage Ground

• Install a separate disconnect switch at the

outdoor unit (Fig. 26).

Ground the outdoor unit per national, state, provincial

and local code requirements (Fig. 27).

Components:

1. Contactor

2. Dual Run Capacitor

3. Ground Lug

4. Thermostat Control Wire Feed

5. High Voltage Power Cable Feed

6. Compressor and High Pressure Switch

Wire Feed

26

1

2

54

6

3

27

9.1.4 Thermostat

• Room thermostat (purchased

separately) should be installed

approximately in the center of the

conditioned area on an INSIDE wall

and 5 feet (1.5m) above the oor.

• Do NOT install thermostat on an

outside wall or where it can be

exposed to sunlight or drafts.

Good thermostat locations are:

• in a living room or dining room,

• in a position where the thermostat will be in natural air circulation (not dead air space) but where the

thermostat will not be exposed to strong drafts from windows, doorways, or from a heating or cooling air

Bad Room Thermostat Locations:

• on an exterior building wall (exposed to outdoor temperature eects) where drafts from an exterior door will

aect its reading

• above or in the line of airow from a heating or cooling air supply register

• in direct sunlight

• in a kitchen, bath, or entry hallway or on a wall shared with a hot space such as a kitchen or boiler room

• in an alcove, behind an open door, behind furniture or next to concealed pipes or air ducts

• Do not place heat-emitting devices such as lamps or small appliances close to the thermostat. Their heat

may aect its operation.

CAUTION

ENSURE THE SYSTEM HAS A MINIMUM OF 5 MINUTES

OFF TIME BETWEEN STARTS. SYSTEM SHORT CYCLING

MIGHT LEAD TO SYSTEM FAILURE. REFER TO YOUR

THERMOSTAT MANUAL TO SET UP THE START-UP TIME

DELAY. IF UNAVAILABLE, AN ANTI-SHORT CYCLE KIT

(W370-0249) IS AVAILABLE (PURCHASED SEPARATELY).

!

17

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W415-3148 / A / 10.04.23

28

WIRING DIAGRAM / SCHÉMA DE CÂBLAGE

YY

BL

GND

GND LUG

COMP

BK

R

R BR G/Y

LEGEND / LÉGENDE

HIGH VOLTAGE FIELD WIRING /

FIL HAUTE TENSION

COLOUR CODE / CODE DE COULEUR

BK - BLACK / NOIR

BL - BLUE / BLEU

BR - BROWN / BRUN

G - GREEN / VERT

R - RED / ROUGE

Y - YELLOW / JAUNE

COMPONENT NAME / NOM DES COMPOSANTS

C - CONTACTOR / CONTACTEUR

CAP - FAN AND COMPRESSOR DUAL RUN CAPACITOR / VENTILATEUR

ET LE COMPRESSEUR DOUBLE RUN CONDENSATEUR

CM - OUTDOOR FAN MOTOR / MOTEUR DE SOUFFLERIE EXTÉRIEUR

COMP - COMPRESSOR / COMPRESSEUR

GND - GROUND / TERRE

GND LUG - GROUND LUG / COSSE DE MISE À LA TERRE

HPS - HIGH PRESSURE SWITCH / COMMUTATEUR HAUTE PRESSION

NOTES / REMARQUES

1. WARNING: RISK OF ELECTRIC SHOCK. CAN CAUSE INJURY OR DEATH: DISCONNECT ALL REMOTE ELECTRIC POWER SUPPLIES BEFORE SERVICING.

AVERTISSEMENT. RISQUE DE CHOCS ÉLECTRIQUES. PEUT CAUSER DES BLESSURES ET MÊME ENTRAÎNER LA MORT. COUPER LES SOURCES D’ALIMENTATION À DISTANCE

AVANT LE DÉPANNAGE.

2. USE COPPER SUPPLY WIRES / UTILISER DES FILS D’ALIMENTATION EN CUIVRE. W385-0813/B

Y

R

CAP

CM

9.1.5 Wiring Diagram

18

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W415-3148 / A / 10.04.23

9.1.6 Wiring Diagram with Optional Accessories

AA

WIRING DIAGRAM / SCHÉMA DE CÂBLAGE

GND

GND LUG

COMP

BK

R

R BR G/Y

LEGEND / LÉGENDE

HIGH VOLTAGE FIELD WIRING /

FIL HAUTE TENSION

COLOUR CODE / CODE DE COULEUR

BK - BLACK / NOIR

BL - BLUE / BLEU

BR - BROWN / BRUN

G - GREEN / VERT

R - RED / ROUGE

Y - YELLOW / JAUNE

COMPONENT NAME / NOM DES COMPOSANTS

C - CONTACTOR / CONTACTEUR

CAP - FAN AND COMPRESSOR DUAL RUN CAPACITOR / VENTILATEUR

ET LE COMPRESSEUR DOUBLE RUN CONDENSATEUR

CM - OUTDOOR FAN MOTOR / MOTEUR DE SOUFFLERIE EXTÉRIEUR

COMP - COMPRESSOR / COMPRESSEUR

GND - GROUND / TERRE

GND LUG - GROUND LUG / COSSE DE MISE À LA TERRE

HPS - HIGH PRESSURE SWITCH / COMMUTATEUR HAUTE PRESSION

NOTES / REMARQUES

1. WARNING: RISK OF ELECTRIC SHOCK. CAN CAUSE INJURY OR DEATH: DISCONNECT ALL REMOTE ELECTRIC POWER SUPPLIES BEFORE SERVICING

AVERTISSEMENT. RISQUE DE CHOCS ÉLECTRIQUES. PEUT CAUSER DES BLESSURES ET MÊME ENTRAÎNER LA MORT. COUPER LES SOURCES D’ALIMENTATION À DISTANCE

AVANT LE DÉPANNAGE.

2. USE COPPER SUPPLY WIRES / UTILISER DES FILS D’ALIMENTATION EN CUIVRE.

Y

R

CAP

CM

OPTIONAL WIRING /

FIL OPTIONNEL

SC - HARD START CAPACITOR KIT (OPTIONAL) / ENSEMBLE DU

CONDENSATEUR D’ALLUMAGE FORCÉ (OPTIONNEL)

BK 5 2

Y

R

1

SC

Y Y

BL

Y

BL

Y

BL

TIMER

[OPTIONAL]

TD

TD - TIME DELAY RELAY (OPTIONAL) / RELAIS DE TEMPORISATION

(OPTIONNEL)

19

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W415-3148 / A / 10.04.23

10. START UP

Perform the following steps:

1. Set System Thermostat to OFF (Fig. 29).

2. Turn disconnect switch ON (Fig. 30) to apply

power to the indoor and outdoor units.

Wait:

3. If no crankcase heater accessory is used, wait

ve (5) minutes and go to Step 5.

4. Wait one (1) hour before starting the unit, if

compressor crankcase heater accessory is used

and the Outdoor Ambient is below 70ºF. Refer to

(Fig. 31).

5. Set system thermostat to ON (Fig. 32).

HOLD

HEATOFFCOOL

FAN SYSTEM PROG/MAN

AUTOON

time:

thu:

18:30

day:

72F

32

31

30

HOLD

HEATOFFCOOL

FAN SYSTEM PROG/MAN

AUTOON

time:

thu:

18:30

day:

OFF

29

20

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W415-3148 / A / 10.04.23

11. SYSTEM CHARGE ADJUSTMENT

REFRIGERANT CHARGING MUST ONLY BE ATTEMPTED BY QUALIFIED CONTRACTORS. IMPROP-

ER SYSTEM CHARGE CAN REDUCE SYSTEM CAPACITY AND MAY CAUSE EQUIPMENT DAMAGE.

WARNING !!

DO NOT LEAVE THE SYSTEM OPEN TO THE ATMOSPHERE. DO NOT ATTEMPT TO PUMP “TOTAL

SYSTEM CHARGE” INTO OUTDOOR UNIT FOR MAINTENANCE, SERVICE, ETC. THIS MAY CAUSE

DAMAGE TO THE COMPRESSOR AND/OR OTHER COMPONENTS. THE OUTDOOR UNIT ONLY HAS

ENOUGH VOLUME FOR THE “FACTORY CHARGE”, NOT FOR THE “TOTAL SYSTEM CHARGE”. IT IS

UNLAWFUL TO KNOWINGLY VENT, RELEASE OR DISCHARGE REFRIGERANT INTO THE OPEN AIR

DURING REPAIR, SERVICE, MAINTENANCE, OR THE FINAL DISPOSAL OF THIS UNIT.

WARNING !!

All air conditioning units come pre-charged with enough refrigerant (R-410A ) for an appropriately matched

indoor evaporator coil. For eld installed line set, a correction of 0.6 Oz of R-410A per foot of line set is

required for 3/4” suction line diameter and 0.7 Oz of R-410A per foot of line set is required for 7/8” suction line

diameter. Liquid line shall be 3/8” diameter. Using evaporator coils that have not been approved as a match by

the manufacturer is not recommended. Refer to AHRI directory for matched evaporator coil for your system.

The system charge shall be adjusted according to section 11.2 or 11.3 depending on the application.

To obtain an ecient system matching AHRI performance, units with either thermostatic expansion

valves or piston ow raters must be installed in the vertical direction with the liquid refrigerant owing

downwards or upwards, feeding the indoor evaporator coil. The capillary tubes and expansion valve

location can be adjusted to ensure that the ow through both of the slabs of the A-Coil have equal ow

of refrigerant. If the temperature dierence does not vary more than 10°F between the two slabs of

A-coil, it indicates the equal ow of refrigerant through the each of the slabs.

NOTE

11.1 SYSTEM TOTAL CHARGE

11.2 ADJUSTING SYSTEM CHARGE FOR SYSTEMS USING THERMOSTATIC

EXPANSION VALVES

Procedure:

1. Connect charging hose from liquid port on the

refrigerant bottle to charging service port on

manifold gauge.

2. Open refrigerant bottle and purge hose.

3. Connect low side of manifold gauge set to the

pressure port on vapor line service valve.

4. Connect the high side of the manifold gauge set

to pressure port on liquid line service valve.

5. Temporarily install a temperature measuring device on the liquid line near the liquid service valve and

one at the vapor line near the vapor service valve. Ensure that the temperature measuring device makes

adequate contact and insulated for accurate readings.

6. Operate the system for at least 10 minutes.

7. Check subcooling and superheat. Systems using thermostatic expansion valves should have a

subcooling of 7°F to 9°F and superheat of 7°F to 9°F.

8. Record Total Charge on the nameplate and manual.

H3.96

CAUTION

! !

TO PREVENT PERSONAL INJURY, CAREFULLY

CONNECT AND DISCONNECT MANIFOLD

GAUGE HOSES. ESCAPING LIQUID

REFRIGERANT CAN CAUSE BURNS. DO NOT

VENT REFRIGERANT INTO THE ATMOSPHERE.

RECOVER ALL REFRIGERANT DURING SYSTEM

REPAIR AND BEFORE FINAL UNIT DISPOSAL.

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