Carrier 40KMQ03036301, 40KMQ01824301, 40KMC03036301, 40KMC024301, 40KMC018300 Installation Guide

Installation Instructions

40KMC, KMQ Unit

38HDF/QRF Unit

to the expe_

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other

conditions which may cause death, personal iniury, or property damage. Consult a qualified installer, service agency, or your

distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories

when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses, protective clothing,

and work gloves. Use quenching cloth for brazing operations.

Have fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult local building codes and

current editions of the National Electrical Code ( NEC ) NFPA 70. In Canada, refer to current editions of the Canadian electrical code

CSA 22.1.

Recognize safety information. This is the safety-alert symbol/_k When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal iniury. Understand

these signal words; DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies

the most serious hazards which will result in severe personal iniury or death. WARNING signifies hazards which could result in

personal iniury or death. CAUTION is used to identify unsafe practices which would result in minor personal iniury or product

and property damage. NOTE is used to highlight suggestions

which will result in enhanced installation, reliability, or operation.

NOTE: Read the entire instruction manual before starting the installation.

UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could result in personal iniury or

equipment damage. Puron refrigerant systems operate at higher pressures than

standard R-22 systems. To avoid damage to the unit or possible personal iniury, do not use R-22 service equipment or components on Puron refrigerant equipment.

ELECTRICALSHOCK HAZARD Failure to follow this warning could result in personal

iniury or death. Before installing, modifying, or servicing system, main

electrical disconnect switch must be in the OFF position. There may be more than 1 disconnect switch.

Lock out and tag switch with a suitable warning label.

PERSONAL INJURY AND EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in personal iniury and / or equipment damage.

DO NOT operate the unit without a filter or with grille removed.

DIMENSIONS - INDOOR

!I , .... ,:

1 10_5_ ,_

40KMC018

,.,.,,.,---"--Adjacent Room Supply

1' - 10-5/8"(575)

Fresh Air Inlet 3/8

,,,,2"(52)

1-5/16"(4)_

Supply air T

Model Unit Size OPlbratin g Wkegght

4OKMC 18 49 I 22.3

Supply aF Return _r Supply_air

Return air

2'-8-1/2"(825)

Supply air

2L4-11/32(720)

1'@-21/32 "(550 )

}

40KMC024-036 / 40KMQ018-036

.........._

- ....... J

2'-8-1/2 (825)

1'- 11-7/16"(595)

FRESH AIR

INLET

Model Unit Size

4OKMC

4OKMQ

024 91

030 / 036 95

018 / 024 91

030 / 036 95

NOTE: Dimensions in () are in mm.

Operating Weight

Ib kg

A08447

Fig. 1 - 40KMC,KMQ Indoor [}nit Dimensions

DIMENSIONS - OUTDOOR

JUNCTION BOX FOR_

POWER SUPPLY g

CONTROL CONNECTIONS

FIELD CONTROL SUPPLY_

718"(22,2) HOLE WIGROMMET

WIRE ENTRY

=I o

SERVICE PORTS (ADDITIONAL PORTS

COMPRESSOR ACCESS)

_ PROVIDED INSIDE "G"

"B"

I _ o'-9°

I ___NI_I _ 0"-4lJ2° I

L, e I= . (114)

(204,01

(28) // I\\

/ =4, 1<-3 9/16"

JR]GHT SIDE VEIW \ I 19o)

___ _TYP

(FIELD PROVIDED AND INSTALLED)

WIND BAFFLE ACCESSORY

[ _ I' (191)'z_-

ORAIN HOLES_.< _ _ _1 "M"_ "PiF

(TYP_ \ | i<l |' " -I _ 1-0'(2841)/2"

"E" o'-7 1/2"

/ E I 1,,,,-- ........ 7:_-_ J_o 7

v0 IiI', '

/ l & _ LZ.,_........... [_" "-_

_,__ L_J 'A ' I LnJ LnJ

0'-0 11/1B "_ I I Z & !_ " "

118) _ o'-_" k- qmF J

UNIT IVODELS CHASSIS

38HDF 38QRF SIZE

Unit Size Unit Size (Reference)

018 018 O 2'-1V8" 3'-015/16" 1'-29/16 " 1'-4" 1'-117/16 " 1'-53/16 " 1'-51/8 " 1'-10" 1'-1" 0'-65/8 " 0'-11V4" 0'-2W16" 0'-6"

024,030 024 0.6 (790.6) (938.2) (369.9) (406.4) (595.3) (436.6) (587.4) (711.5) (355.6) (171.5) (295.3) (75) (152.4)

036 030,036 1.0 (944.6) (1131.9) (433.4) (468.3) (774.7) (498.5) (741) (865.5) (347.7) (206.4) (403.2) (88) (165.4)

NOTE: Dimensions shown in feet-inches. Dimensions in ( ) are millimeters.

CLEARANCES - OUTDOOR

- _-- J !

(_Sp2) _TOP VIEW

A B C D E F G H J K L N P

(638.2) (938.2) (369.9) (406.4) (595.3) (436.6) (435) (559.1) (330.2) (168.3) (285.8) (75) (152.4)

2'-7V8" 3'-015/16" 1'-29/16 " 1 '-4" 1'-117/16" ] 1 '-53/16 " 1'-11 VB" 2'-4" 1'-2" 0'-63/4 " 0'-115/8" 0'-215/16" 0'-6"

3'-13/16 " 3'-89/16 " 1'-51/16 " 1 '-67/16 " 2'-61/2 " 1'-7s/8 " 2'-53/16 " 2'-101/16 " 1 '-111/16" 0'_81/8 ', 1'_37/@', 0'_37/16 ', 0'_61/2 ',

Fig. 2 - 38HDF, QRF Unit Dimensions

]' 4 _

(406)

"_-¢o_/_

FRONT VIEW

UNIT SIZE

018 _/@ 15.88 166 75.3

38HDF

38QRF 030 3/4 19.05 187 84.8

024 5/@ 15.88 176 79.8

030 3/4 19.05 187 84.8

036 3/4 19.05 250 113.4 018 s/8 15.88 166 75.3 024 s/@ 15.88 176 79.8

036 3/4 19.05 232 105.2

* Male flare connection for Heat Pumps

OPERA "ING WT

in. mm Ib kg

"DIA VAPOR LINE CONN.

FEMALE SWEAT CONN.

--3/8" DIA.(9.S3) LIQUID LINE

FEMALESWEATCONN*

A08434

Air-outlet

UNIT Coil Facing Wall - in. (mm) Fan Facing Wall - in. (mm)

A 24 (610) 24 (610)

B 36 (914) 36 (914) C 36 (914) 8 (203) a 6 (152) 8 (203)

E 6 (152) 36 (914)

Fig. 3 - Outdoor Unit Clearance

A08436

Parts List Indoor Unit

The following items are included with the indoor unit:

Table 1 - Installation Materials

Description Qty Usage

Baffle (size 18) 1 Required for fresh air intake

Template 1 tions

NOTE: The grille and the User Interface are not included with unit. For User Interface, a wireless remote, wired remote, or a Zone Manager can be ordered.

Outdoor Unit The following items are included with the outdoor unit:

Mark hangers, piping and wiring Ioca-

These instructions cover the installation and start-up of the systems listed in Table 2.

Table 2 - Matched Systems

SYSTEM SYSTEM

TYPE SIZE BER

Cooling 024 38HDF024-3 40KMC024-3

Only 030 38HDF030-3 40KMC03036-3

Heat Pump 030 38QRF030-3 40KMQ03036-3

Cooling 018 38HDF018-3 40KMQ01824-3

with 024 38HDF024-3 40KMQ01824-3

Electric 030 38HDF030-3 40KMQ03036-3

Heat 036 38HDF036-3/5/6 40KMQ03036-3

018 38HDF018-3 40KMC018-3

036 38HDF036-3/5/6 40KMC03036-3 018 38QRF018-3 40KMQ01824-3

024 38QRF024-3 40KMQ01824-3

036 38QRF035-3/5/6 40KMQ03036-3

OUTDOOR UNIT MODEL NUM-

INDOOR UNIT

BODY

METERED FLOW

C00L[NG

38HDF018-036

Fig. 4 - 38HDF018-036

BODY

Fig. 5 - 38QRF018-036

Model Filter Drier Pistons*

38HDF _* _* _* _* 38QRF _* _* (qty 2) _* _* (qty 3)

Multiple pistons. Quantity varies with size.

Piston Flare

Cap Connector

A09499

A09500

SYSTEM REQUIREMENTS

Clearances

Allow sufficient space around the indoor and outdoor unit for proper airflow circulation and servicing. Refer to Fig. 1 and Fig. 3

for minimum required clearances, Piping: Piping and insulation is field supplied,

PiDinu Lenuths

The minimum length between the indoor and outdoor units is 10 fl (3 m). Refer to table 3 for the maximum lengths allowed.

Table 3 - Maximum Refrigerant Line Lengths

Unit Max Line Max Elevation Max Elevation

Size Length* ft(m) (ID over OD) ft(m) (OD over ID) ft (m)

18K 200 (61) 65 (19.8) 200 (61) 24K 200 (61) 65 (19.8) 200 (61)

30K 200 (61) 65 (19.8) 200 (61) 36K 200 (61) 65 (19.8) 200 (61)

Note:For lengths greater than 25 ft (7.6 m), refer to the Duct Free Long

Line Guide.

Pipe Sizes

Refer to table 4 for pipe sizes.

Table 4 - Pipe Sizes

Unit Size Mix Phase - in Vapor - in

18K 3/8 5/8

24K 3/8 5/8 30K 3/8 3/4

36K 3/8 3/4

Note:Both lines need to be insulated using at least 1/2 inch closed foam

insulation.

Pipe Sizes (in)

Condensate Drain Pipe Sizes

Refer to table 5 for the required sizes.

Table 5 - Drain Pipe Sizes

Unit Size Inside Diameter - in

18K 1

24K 1 30K 1

36K 1

Refriuerant Charge

The 38HDF and 38QRF units can be matched with multiple outdoor units and thus additional charge might be required when

matched with the 40KMC or 40KMQ units,

Table 6 - Additional Charge

Additional Charge Ib (kg)

Unit Size 38HDF 38QRF

018 0 0

024 1.2(0.55) 0 030 3.0 (1.40) 1.8(0.82)

036 0.8 (0.36) 0

Note:The above additional charge is required amount forline lengths up to 25ft (7.6m), For line lengths exceeding 25ft (7.6 m), additional charge will be required. Referto the Duct Free SpfitsLong Line Guide.

Metering Device

The metering device(s) for these systems is a type B Accurator installed with the outdoor unit. One Accurator is required for the cooling only system and two are required for the heat pump

systems. The Accurators are supplied with the outdoor unit. However, since the same outdoor unit can be matched with

multiple indoor units, the correct Accurator must be selected. Refer to Table 7 for the correct Accurator size.

Table 7 - Accurator Sizes

System Type Size Accurator

018 49 024 57

Cooling Only 030 61

036 74 018 51

024 55

Heat Pumps 030 63

036 70

Cooling

Heating

Accurator

53 55

Power and Connecting Cables - Field Supplied Power:

• The indoor and outdoor units require a dedicated power supply.

• Consult local building codes, NEC (National Electric Code) or CEC (Canadian Electric Code) for any special requirements.

• Use Table 8 for the electrical requirements for the outdoor units and Table 9 for the indoor units to correctly size the cables and

disconnect switches.

Table 8 - 38HDF

Unit

Size Voltage

018 208/230-1-60 024 208/230-1-60

030 208/230-1-60

035/36 208/230-1-60 035/36 208/230-3-60

035/36 460-3-60

QRF Electrical Requirements

38HDF

Min Ckt Amps/

Fuse HACR Bkr

Amps

12.1/20

16.8/25

18.4/30

23.8/40

18.0/30

8.3/15

Min Ckt Amps/

Fuse HACR Bkr

38QRF

Amps

12.1/20

16.8/25

18.4/30

23.3/35

14.5/20

8.7/15

Control Wiring

Thermostat wires should be used for control wiring between the indoor and outdoor units. A two conductor cable is required for the cooling only units and a seven conductor cable is required on

heat pumps. 18 AWG is recommended for any length up to 50 ft (15.2 m). 16 AWG is recommended for lengths between 50 and

200 ft (15.2 and 61.0 m).

User Interface

For 38HDF and 38QRF units matched with 40KMC and 40KMQ units, the following accessories are available

• Wall mounted control. Up to 6 units can be daisy chained and controlled by one wired control.

• Zone manager c@able of controlling up to 32 units divided up to 8 different zones.

• Wireless remote control.

NOTE: Units are factory ready for wall mounted wired controls. See User Interface Installation section in this document.

Operating Range

Ensure that the system operates within the @plication guidelines shown in the following tables,

Cooling Operating Range

Maximum Minimum

DB°F (°C) WB°F (°C) DB°F (°C) WB°F (°C)

Outdoor

Unit 125 (51.7) -- 55 (12.8) --

Indoor

Unit 90 (32.2) 74 (23.3) 62 (17.0) 56 (13)

Heating Operating Range

Maximum Minimum

Outdoor

Unit 75 (23.9) 67 (19.4) 17 (-8.3) --

Indoor

Unit 81 (27.2) -- 62 (17.0) --

DB°F (°C) WB°F (°C) DB°F (°C) WB°F (°C)

Accessories

An extensive list of field installed accessories is available for both indoor and outdoor units. Identify what accessories, if any, are

required for the application at hand and consult the separate installation instructions for the accessories. Some of the

accessories, especially on the indoor units, can be installed much

easier if planned ahead.

Table 9 - 40KMC / KMQ Electrical Requirements

40KMC 40KMQ

Unit Voltage Min Ckt Amps/ Min Ckt Amps/

Size Fuse HACR Bkr Fuse HACR Bkr

018 208/230-1-60 0.8/15 16.3/20 024 208/230-1-60 0.7/15 16.3/20

030 208/230-1-60 1.3/15 16.9/20 036 208/230-1-60 1.3/15 16.9/20

Amps Amps

INSTALLATION

Complete Pre-installation Checks

1. Unpack Unit - Store the indoor and outdoor units in the original packaging until it is moved to the final site for in-

stallation. When unpacking indoor unit, be careful not to lift unit by condensate drain discharge pipe or by refrigerant

connections.

2. Inspect Shipment - Upon receipt of shipment, check the indoor and outdoor units for damage. If there is any dam-

age, forward claim papers directly to the transportation company. Manufacturer is not responsible for damage in-

curred in transit.

3. Inspect Parts Supplied With Units - Check all items against parts list (see page 4). If any items are missing, noti-

fy your distributor or Carrier office.

To prevent loss or damage, leave all parts in original packages until installation.

Consider System Requirements

1. Consult local building codes and NEC for special installa- tion requirements.

2. When deciding the location of the indoor and outdoor units, ensure that the piping run does not exceed the allowed dis-

tances listed in Table 3.

3. Make sure the indoor and outdoor units are easily accessible to electrical power.

4. Allow sufficient clearances for airflow, wiring, refrigerant piping, and servicing the unit. See Fig. 2 and Fig. 3.

5. Condensate piping can be directed through the inside wall to an approved drain or straight outside.

INSTALL INDOOR UNIT

Plan the installation carefully before you begin.

1. Select indoor unit location.

a. A location that can bear the weight of the unit.

b. Install the unit a centrally as possible in the room.

c. Choose a location that does not obstruct air circulation.

NOTE: A maximum of two air outlets can be restricted at one time. See Fig. 6. The Air Supply Outlet Obstruction accessory

kit can be used to obstruct air outlets.

NOTE: If the mounting location is in a plaster board ceiling,

the maximum dimensions of the unit housing cutout must not exceed 2 It, 2 in. (0.66 mm) square for the 40KMC018 units and 2 ft. 11 in. (0.66 mm) square for the 40KMC024-036 and 40KMQ018-036 units.

NOTE: The unit is in two sections: The unit and the grille.

a. Use the factory supplied cardboard template as a guide

to mark the position of the hangers, refrigerant lines and condensate drain pipes, power supply cables and remote

control cables. See Fig. 1 for dimensions.

b. Depending on the type of ceiling, fix the threaded

hangers as shown in Fig. 7 and Fig. 8.

--® ®

(T) Nut ® Washer @ Washers (_) Threaded hangers ® Threaded hangers @ Washer

® Wooden frame @ Nut @ Nut @ Nut

A07186

Fig. 7 - Attaching Hangers to Ceiling

_4._.___._/_ Threaded hangers

3: 7=

"T" ar

(to be removed)

A07187

Fig. 8 - Threaded Hangers and "T"Bar

c-7=-=-c3

¢-7='=-.--I

{, )

r------

Max. 2 louvers closet

T--7=--=-C3

_t --" 1

Fig. 6 - Air Outlet Obstruction

d. Choose a location that is easily accessible for service

and maintenance.

e. Do not install indoor units near a direct source of heat

such as direct sunlight or heating appliance.

f. Do not install units too close to humid conditions.

2. Mounting Indoor Unit

_m,=_=_=_=___

A07184

c. Insert the washers as shown in Fig. 7 and Fig. 8.

d. Remove the "T"bar in ceiling to facilitate installation.

See Fig. 8. If the "T" bar cannot be removed from the

ceiling, the unit may have to be tilted as shown in Fig.

T T

T-Bar T-Bar

• B kupenslon rac es SupensionBrackets

A07188

Fig. 9 - Positioning Unit in Ceiling

e. If Fresh Air Intake or Conditioning an Adjacent Room

is required, perform the modification required to the unit

at this point. Refer to the Installation Options section

for additional details.

£Usea stacker to lift the unit to the installation location.

See Fig. 10.

A07185

Fig. 10 - Positioning []nit

g. Carefully lift the unit using the four suspension brackets

and insert the four suspension brackets into the threaded hanger as shown in Fig. 11.

False

Ceiling

to 1-3/16"

Fig. 11 - Align and Level []nit

h. Align and level the unit by adjusting the nuts and lock-

nuts on the threaded hangers maintaining a distance of 1 in. to 1-3/16 in. between the sheet metal body and the underside of the false ceiling. See Fig. 11.

3. Drill the hole for the piping (refrigerant and condensate) and control wiring in the external wall.

a. Drill a 2-3/4 in. (70 ram) hole in the wall with a 3/16

in. to 3/8 in. (4.8 - 9.5 ram) slope toward the outside. Refer to Fig. 12.

_[ i/ •

Spirit

A07189

INSTALL OUTDOOR UNIT

The outdoor units can be installed on the ground, on the roof, or mounted on a wall.

NOTE: Install the unit so that the coil does not face into prevailing winds. If this is not possible and constant wind

winds above 25 mph are expected, use accessory wind baffle.

See installation instructions provided with accessory kit. Wind baffles should also be used on all units with accessory low ambient temperature control.

Mounting on Ground

1. Mount unit on a solid level concrete pad.

2. If a heat pump is being installed, use a field- provided snow stand or ice rack where prolonged subfreezing temperatures

or heavy snow occurs.

3. Position unit so water or ice from roof does not fall directly onto unit.

4. On cooling only units, an accessory stacking kit can be used

when units are to be stacked. See installation instructions

provided with the accessory kit.

Mounting on Roof

PERSONAL INJURY AND/OR EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in personal injury and / or equipment damage. Be sure unit panels are securely in place prior to rigging.

1. Rig the unit. Keep the unit upright and lift using a sling. Use cardboard or padding under the sling, and spreader bars

to prevent sling damage to the unit. See Fig 13. See Fig. 2 for center of gravity reference

2. Mount unit on a solid concrete pad or platform.

3. Isolate unit and piping from structure

4. If a heat pump is being installed, use a field- provided snow stand or ice rack where prolonged subfreezing temperatures

or heavy snow occurs.

5. On cooling only units, an accessory stacking kit can be used

when units are to be stacked. See installation instructions

provided with accessory kit.

A07190

Fig. 12 - Drilling for Connections

4. Drill hole for Fresh Air Intake, if required. Refer to Installa- tion Options section for additional information.

NOTE: In rooms with high humidity, brackets should be

insulated using self-adhesive insulation.

SUNG

Fig. 13 - Lifting []nit with Sling

SLING PADDING

COMPRESSOR

END

CENTER OF GRAVmTY

A07396

Mounting Unit on Wall The units can also be mounted on the wall using the accessory

mounting kit.

Complete Outdoor Refrigerant Piping Connec- tions

Follow the following general guidelines:

1. Use refrigerant grade field - supplied tubing. Refer to Table 4 for the correct line sizes.

2. Do not use less than 10 ft (93.05 m) of interconnecting tubing.

[]NIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

If any section of pipe is buried, there nmst be a 6 in. (152.4 ram) vertical rise to the valve connections on the outdoor unit. If more than the recommended length is buried, refrigerant may nfigrate to cooler, buried section during extended periods of system shutdown. This causes refrigerant slugging and could possibly damage the compressor at start-up.

When more than 80 fl (24.4 m) of interconnecting tubing is used, consult the Duct-Free Split System Long Line Application Guide

for required accessories.

3. Insulate both lines. A minimum of 1/2 inch foam pipe insu- lation is recommended.

4. Run the refrigerant tubes as directly as possible and avoid unnecessary turns and bends.

5. Suspend refrigerant tubes to avoid damage to insulation or tubes so they do not transnfit vibration to the structure.

6. When passing refrigerant tubes through the wall, seal the opening so rain and insects do not enter the structure. Leave

some slack in refrigerant tubes between structure and out- door unit to absorb vibration.

NOTE: A fusible plug is located in unit suction line; do not cap

this plug. If local codes require additional safety devices, install as directed.

Connection at Outdoor Unit

[]NIT DAMAGE HAZARD

Failure to follow this caution may result in equipment damage or improper operation.

To prevent damage to unit or service valves observe the following:

• A brazing shield MUST be used.

• Wrap service valves with wet cloth or use a heat sink material.

38HDF []nits:

1. Assemble the connector tube to the factory supplied filter

drier by:

a. Braze the field supplied connector to the inlet of the

filter drier (see Fig. 14)

b. Braze the factory supplied flare connector to the outlet

end of the filter drier (see Fig.14)

COOL[NG

FILTER

"/DRIER

Fig. 14 - 38HDF018-036 Connector Tube Assembly

2, Assemble the Accurator body (see Fig, 15) using the correct

factory supplied piston (refer to Table 7),

TEFLON SEAL

\ _ _ TO INDOOR

__}__ _ COIL

CAP WITH ORIFICE BODY

NOTE: Arrow on AccuRater body points in free flow direction, away from the indoor coil.

PISTON \

Fig. 15 - AccuRater (bypass type) Metering Device

Components

PISTON BODY

A09499

A09501

3, Attach the complete Accurator assembly to the flare connec-

tion end of the filter drier

4, Braze the completed filter drier/Accurator assembly to the

liquid service valve.

5, Connect the field supplied line set to the filter drier/Accura-

tor assembly and the suction valve. A sweat connection is required at the suction valve and flare connection is required

for the nfixed phase line,

6. Insulate any exposed areas between the line set and the li- quid valve.

38QRF Units

1. Assemble the connector tubes to the factory supplied filter

drier by brazing the factory supplied flare connectors to the inlet and outlet for the filter drier (see Fig. 16)

Fig. 16 - 38QRF018-036 Connector Tube Assembly

2. Perform step 2 and 3 from the 38HDF section.

3. Remove the plastic cap from the liquid and suction service valve on the 38QRF unit and assemble the heating piston

and piston cap supplied with the outdoor unit as shown in Fig. 17.

--P ISTON

HEAT IN6

PISTON CAP

L/ ] METEREDFLOW

J "=HEATING

Fig. 17 - AccuRater (bypass type)

Metering Device Components

Heat Pump Systems Only

BODY

TOR

A09507

A07407

UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage

or improper operation. Unit failure as a result of operation on improper line voltage or

excessive phase imbalance constitutes abuse and may cause damage to electrical components. Such operation could void any applicable Carrier warranty.

ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal iniury

or death. Before performing service or maintenance, be sure indoor

unit main power switch is turned OFF and indoor blower has stopped.

Lock out and tag switch with a suitable warning label.

Power Wiring

1. Mount outdoor power disconnect. The unit is factory wired for the voltage shown on the unit nameplate. The fused dis- connect switch nmst be provided within sight of the unit,

readily accessible, but out of reach of children. Provisions for locking the disconnect switch on the OFF (open) posi-

tion is advisable. The disconnect switch must comply with NEC and local codes, Protect the unit and wiring using

only the recommended fuse/circuit breaker size. See Table 8.

2. Run power wiring from main box to disconnect per NEC and local codes.

3. Run power wiring from the disconnect switch to outdoor unit. Use only minimum 60°C copper conductors between

the disconnect switch and the unit for field power connec- tion,

4. Route the field power wires through the conduit connection opening in the unit side panel and connect in junction box

as shown in Fig 18. The unit and power wiring must be grounded,

NOTE: The Teflon seal on the piston should point towards the liquid service valve. The size of the factory supplied piston might have to be adjusted for long line applications (over 80 ft / 24.4 m). Refer to the Duct Free Long Line Application Guide

for additional information.

4. Attach the flare end of the filter drier assembly to the piston cap (see Fig. 17).

5. Connect the field supplied line set to the filter drier as- sembly and to the suction valve.

6. Insulate any exposed areas between filter drier and liquid valve.

Complete Outdoor Power and Control Wiring

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

The unit cabinet must have an uninterrupted or unbroken ground to minimize personal injury if an electrical fault should

occur. The ground may consist of electrical wire or metal conduit when installed in accordance with existing electrical

codes.

TO--"

THREE-PHASE CONNTO DISCONNECT

PER NEC

=GROUND LEAD,

LEGEND

NEC -- National Electrical Code

-- Splice (field)

-- -- ' Field Wiring Factory Wiring

Fig. 18 - Line Power Connections

NOTE: Operating unit on improper line voltage constitutes abuse and may affect Carrier warranty. DO NOT install unit in a system where voltage may fluctuate above or below permissible limits. 9

_----- BLK

NGLE-PHAS7

=d_ BLK

=_i BLU --

=_::_- YEL

._] GROUNDING LUG

THREE-PHASE UNIT

A08251

+ 19 hidden pages