HEATUNG & COOUNG

38EZG, 38ETG, 38ESG

12, 13, 14 SEER SpMit-System

Air Conditioner with Puron®

%isitx__ _.carrier.com

Installation and Start-Up instructions

NOTE: Read the entire instruction manual be%re starting the

installation

This symbol --> indicates a change since the last issue,

installer or agency must use thctory=authorized kits or accessories

when modit}-ing this product. Refkr 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 t\_r brazing operations.

Have fire extinguisher available. Read these instructions thor=

oughly and i\fllow all warnings or cautions included in literature

and attached to the unit. Consuh local building codes and National

Electrical (?ode (NEC) tbr special requirements.

Recognize sa_kty information. This is the safety-alert symbol z_.

which could result in personal inju V or death. CAUTION is used

to identify unsafe practices which would result in minor personal

inju V or prodnct and property damage. NOTE is used to highlight

suggestions which will result in enhanced installation, reliability,

or operation.

Be[bre installing, modi_}'ing, or servicing system, main elec=

trical 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 tahet. Electrical shock can

cause personal injury or death.

1. Locate unit away from windows, patios, decks, etc. where unit

2. Ensure that vapor and liquid robe diameters are appropriate for

unnecessary mrns and bends

vibration.

PC 101 Catalog No 533-80079 Printed in U.S.A. Form 38ESG-1SI Pg 1 1%02 Replaces: New

iNDOOR WALL

diD TUBE

INSULATION

THROUGH THE WALL

.-_ JOIST

1

C

SUSPENSION

UNIT BASE PAN

DIMENSIONS

22-112 X 22-112

A94199

A B C

3-11/16 18-1/8 14-3/8

Fig. 3--Mounting Unit to Pad

be maintained Maintain a distance of 24 in between units.

Position so water, snow, or ice from roof or eaves cannot fall

directly on unit

Step 4_Operating Ambients

The mininlum outdoor opeIating ambient in cooling mode is 55°F,

piston shown on outdoor unit rating plate. If it does not match,

replace indoor coil piston with piston shipped with outdoor

unit. The piston shipped with outdoor unit is correct fbr any

approved indoor coil combination.

piston as shown in Fig. 4. The piston ring ensures that piston

stays seated during all operating conditions.

NOTE: If a Puron TXV is used wit}* a Puron reciprocating

compressor, an appropriate accessoLw hard start kit (capacitor and

relay) must be used. For the appropriate accessoQ" hard start kit see

the Product Data Digest.

NOTE: All 38ETG and 3gESG units MLST be installed with a

NOTE: FK4 and F(4 tim coils are equipped with an Ro22 TXV.

3. Remove and discard _Sctoryoinstalled piston. Be sure Teflon

5. Install TXV on indoor coil liquid line. Sweat swivel adapter to

6. Install vapor elbow with equalize* adapter to suction robe of

7. Connect equalizer robe of TXV to 1/4 in. equalizer fitting on

7/8IN. OD & SMALLER LARGER THAN 7/8IN. OD

following:

material

REFRIGERANT TUBING

To avoid compressor damage, nexer use the system compres=

sor as a vacunnl pump

Refiqgerant robes and indoor coil should be evacuated using the

recommended deep vacuum method of 500 microns, The ahernate

triple evacuation method may be used if"the procedure outlined

below is %llowed Always break a vacuum with dW nitlogen,

The deep vacuum method requires a vacuum pump capable of

pulling a vacuum of 500 microns and a vacuum gage capable of

accurately measuring this vacuum depth. The deep vacuum

and liquid water (See Fig. 7,)

The triple evacuation method should only be used when vacuum

pump is only capable of pumping down to 28 in of mercu W

Fig. 8 and proceed as fbllows:

system absorbing moisture,

be f?ee of"any contaminants and ware* vapor

IblPORTANT: Check to be certain factor)' robing on both indoor

and outdoor unit has not shifted during shipment. Ensure tubes are

not rubbing against each other or any sheet metal. Pay close

with compressor terminal box cover removed.

LIQUID-LINE

////// FILTER-D RYER

CONNECTOR

TUBE

1. Tube diameters are for lengths up to 50 ft. For tubing {engths greater than 50 ft horizontal, or greater than 20 fl vertical differential, consult the Application Guideline

2. Do not apply capillary tube indoor coils to these units.

ACCESSORY

Evaporator Freeze Thermostat Yes No No

Winter Start Contro_ Yest No No

Accumulator No No No

Compressor Start Assist Yes Yes No

MotorMaster® Control

or Yes No No

Low-Ambient Pressure Switch

Wind Baffle See low-ambient instructions No No

Liquid_LineSolenoid Valve See Long-Line

or No Application No

BaH Bearing Fan Motor Yes_: No No

4500

4000

3500

z 3000

_2500

_2000

1500

500

0 1 2 3 4 5 6 7

F- vq

The unit cabinet must have an maintem/pted or unbroken

ground to minimize personal injury if an electrical fault

should occur The ground may consist of electrical wire or

electrical codes. Failure to follow this warning can result in an

electric shock, fire, or death

DISCONNECT

PER N.E.C. AND/OR

LOCAL CODES

CONTACTOR

BLUE C

3

l GROUND

LUG

A94025

ing and increase the transfbmaer capacity' or split the load with an

Step 9--Compressor Crankcase Heater

only, set fl-iermostat to OFF and close electrical disconnect to

outdoor unit.

Step 10--install Electrical Accessories

Refer to the indixidual instructions packaged x_ith kits or acces-

sories when installing.

the fbllowing:

*Do not overcharge system with refiigerant.

*Do not vent refiigerant to atmosphere. Recover during

system repair or final unit disposal.

*Do riot disable low=pressure switch.

*Dome temperatures may be hot.

clothing, and gloves when handling refi'igerant arid observe

the fbllowing:

*Back=seating service valves are riot equipped with Schrader

valves. Fully back seat (counterclockwise) valve stem before

removing gage=port cap.

*Front-seating service valves are equipped with Schrader

m

° 3-phase scroll compressors are rotation sensitive.

° A flashing LED on phase monitor indicates reverse rotation

(See Fig. 10 and Table 3.)

° This will not allow contactor to be energize&

SEQUEN(E OF OPERATION

Turn on power to indoor and outdoor units Transfom_er is

energize&

On a call for cooling, thermostat makes circuits R-Y and R-G. On

three phase models with scroll compressors, the units are equipped

with a phase monitor to detect in the incoming power is correctly

R-Y energizes contactor, starting outdoor finn motor and compres-

sor circuit. R-G energizes indoor unit blower relay, starting indoor

NOTE: If the phasing is incon'ect, the contactor will not be

energized. To correct the phasing, interchange any two of the three

When ff_ermostat is satisfied, its contacts open, de-energizing

contactor and blower relay. Compressor and motors stop.

@ O

Table 4_Requi/ed Liquid-Line Temperature (°F)

LIQUIO TEMPERATURE

SERVICE VALVE

8 10 12 14 16 18

189 58 56 54 52 50 48

195 60 58 56 54 52 50

208 64 62 60 58 56 54

299 88 86 84 82 80 78

364 102 100 98 96 94 92

374 104 102 100 98 96 94

384 106 104 102 100 98 96

406 110 108 106 104 102 100

416 112 110 108 106 104 102

499 126 124 122 120 118 116

temperature, add rekigerant until charted temperature is

temperature, reclaim ref?igerant until charted temperature is

reached.

adding panels and coxers Securely fasten all panels and

covers,

80 .... 5 8 12 15 18 21 25 28 31 35

95 ....... 6 10 14 18 22 25 29

t6 51 53 55 57 5g 61 63 65 67