Carrier 38GC User Manual

Carrier

38GC

c? -1

Air-Cooled Condensing Units

LIQUID LINE

SUCTION LINE

J'dIAM HOLES

MTG SLOTS

AIR FLOW CLEARANCE

(USE ANY TWO)

SUCTION LINE LIQUID LINE

(USE ANY TWO)

BOTTOM VIEW 38GC10I; 38GC,GFI02,103

BOTTOM VIEW 38GC.GFI04,145,105; 38GFI06

CONCRETE MOUNTING PAD

I DIAM HOLE FOR CONTROL

POWER CONN t

1-^" DIAM HOLE FOR LINE POWER CONN

DIAM HOLE

FOR CONTROL POWER CONN t

CONCRETE PAD ** (SQ OR CIRCULAR)

E SUCTION LINE

F LIQUID LINE

rjfiN

SJCT^UM

S'-cr

*Two plugged holes to accommodate charging lines Replace plugs when finished tl nsert rubber grommet (shipped in low voltage splice box) in hole to protect wires if conduit is not used

J1-3/8 in diam on 38GF106 single-phase units

**Concrete pad should weigh 1 -1 /2 to 2 times weight of unit

Fig. 1 — Dimensions, Connections and Mounting Pad (Unit Access Panel Removed)

Table 1 — Installation Data

CO ND E NS IN G U N IT

OP ER A TI NG

WT (l b)

DIM E NS IO N S

(ft-i n. ) RE FR IG E RA N T

CO NN , (in .)

_______

j 38GF units only, field-supplied tubing sizes for oil return and refrigerant charge

*38GF006 supplied with 3/4 to 1 -1 /8 in suction valve connection adapter (field-installed)

38G C 38G F

Dia m A

Hei gh t C

Sue t OD F V,

Liq O DF

38G C

101

111 13 2

- 136

2-0% 2-0 ^4 2-0%

2-1 Vi 6

102 103

2-3 Vi 6

=/s

'/b

illl SPACE REQUIRED FOR SERVICE

149 16 5 154 16 9

2-3%,

% ^/4

% %

CONDENSER AIR FLOW

38G C .G F

104

2-5% 2-5%

2-1 Vi 6

TIE DOWN B0LTS(i-20x lin )

(USE ANY TWO LOCATIONS,

180“ APART)

145 207

211

2-5%,

38G F

105 106 *

220

224 250

2-5 ^4 2-5 V, 6

2-5%

2-7%,

IV3 %

Table 2 — Pad Dimensions (ft—in.)

DIM .

D E F G H

38G C

101

i6ï, ^T 03 ~~ “

-3

0-2% 0-3V, 0- 7%

-5%

0-1 %

GC ,G F 1 3 8 GF

" 10 4 , 1 45 , 1 0 5 " j 1 0 6

2-1 0

0- 4 %

1-1 0%

0- 2

Form 38GC-15SI

Table 3 — Accessories

PART

NUMBER

Auxiliary Start’ Capacitor and Relay Package

38GC900001 38GF900132

38GC9000132 38GC9000371

32LM001301

HH0UD038

HH01AZ039 58BV90008Í

58BV900101 38GB9000Í21

38GF900072

'38^GC900152

38GC900031 38GC900041 38GC900051 38GC900061

38GC900191

38GC900181 50

38GC900071

38GC900081 38GC900091 38GC900101 38GC900in

^Standard equipment on all current single-phase units except 38GC101,

102, 103 and 38GF102

fMotor used with units equipped with 06R compressor For all other

units, use fan motor HC38VQ700.

$For 5/8-in evap connection, cut off 3/4-in. end NOTE All suction lines have a 90-degree bend at one end

(single-phase units) 38GC101 38GC102, 103; 38GF102 (six 38GF900121)

Low Voltage (24 v) Control Transformer (standard on 38GF units) 38GC101, 102, 145, 105 (six 38GC9000121; 20 va) 38GC103, 104 (six 38GC9000361; 40 va).

Solid State Head Pressure Control. Special fieldinstalled fan motor required on 102 thru 145 units.

UNIT

MOTOR

Low Voltage Control (heat—cool) Thermostat Cooling Switch Base

Low Voltage Control (heat—cool) — Grayson

Thermostat (six HH01YA092) Cooling Switch Base (six HH93YZ094)

Expansion Valve Package (six EA16DC100 38GF102, 103, 104)

Expansion Valve Package (six EA12XC400 —

38GF145, 105, 106)

Indoor Fan Relay (six 38BA400693)

Precharged Tubing (not available for 38GF106

Units)

Lgth

(ft)

38GF102 38GF103t 38GF104t

NO. 500011

10 18

18 25 35 50

38GF 38GF

UID

(in.)

Vs Vs Vis Vis

Vs Vs

3/ 3/

Vs Vs

DESCRIPTION

Fan Motor Carrier Part No.

50001 It VE230t VL700

SUCTION

Tube End

OD (in.)

Vs Vs

(in.)

4 V V

OD (in.)

Evap

Vst Vst Vt Vst

Vt Vs

Vst

V V Vs

4 V 4

HC38

___

Con8

Vs Vs

V V

4 4

38GF145

HC40

Honeywel I

__ _ __

UNITOD

3800101,102,

103, 38GF102

38GC101,102,

38GF102 38GC103

38GC104,145,

105, 38GF103, 104,145,105

TRANSPORTATION DAMAGE

File claim with shipping company if shipment is

damaged or incomplete.

SKID REMOVAL

Move condensing unit to final location. Remove top grille. Reach between fan blades and remove 1/4-in. hex head screws holding unit to skid. On the 145, 105,

106 units, remove the two compressor shipping brackets

attached to top of compressor and sides of unit.

PRELIMINARY SURVEY

Consult local building codes for special installa

tion requirements.

When installing unit, allow sufficient space for air-flow clearance, wiring, refrigerant piping and servicing unit. NEC minimum requirement is 3 ft (see Fig. 1). Position unit so water from roof or eaves will not pour directly on top of unit.

Install unit on a solid, level mounting pad. Position tie-down bolts in pad. Any two holes in unit base may be used to fasten unit to pad.

38GC,GF Condensing Units are designed for appli

cation with any Carrier or other evaporator of proper capacity. Install each unit in accordance with Refrigerant Piping Data, (Table 4) and the following special requirements.

Where refrigerant line lengths exceed 25 ft, it is

recommended that a liquid line filter-drier, crank

case heater and accessory start capacitor with relay

be added to condensing unit.

Liquid line filter-drier and crankcase heater are factory installed on 38GF units. Start capacitor with relay is available as an accessory for 38GC101, 102, 103 and 38GF102; factory in stalled on remaining sizes.

When evaporator is below condensing unit,

reduce liquid line size one diameter (min 114-in. OD).

PIPING CONNECTIONS

38GC,GF Condensing Units can be connected to

evaporator sections using Carrier accessory pre charged tubing or field-supplied tubing of refrig erant grade. (Accessory tubing not available for 38GF106.) See Table 3 for accessory tubing sizes and Table 4 for recommended field-supplied tubing sizes. When over 25 ft of interconnecting tubing is used, follow special requirements described above in Preliminary Survey. Do not use damaged or contaminated tubing. Do not cut 3/8-in. OD liquid line to a length shorter than 10 ft. Bend or coil to fit. When precharged tubing or evaporator section has been open for more than 15 seconds per connection, evacuate or purge evaporator coil and tubing system (use field-supplied refrigerant, not unit refrigerant). If necessary, refer to Carrier

System Design Manual, Part 3, for standard piping

techniques.

38GC,GF Connection Procedure — When making

piping connections, be sure to provide clearance at

unit for electrical connections.

Connect refrigerant liquid and suction lines to

condensing unit (Fig. 1). Unit Compatible Fitting permits two methods of refrigerant line connec

tion. mechanical (quick-connect) or sweat

connection. 38GF106 UNITS — Remove suction line adapter

taped to compressor shipping bracket and connect

to suction line Compatible Fitting. Sweat connect refrigerant suction line to adapter. Connect liquid refrigerant line to unit.

(Mate one set ofMECHANICAL CONNECTION

connections at a time).

1. Loosen nut on Compatible Fitting one turn. Do not remove. Loosen tube clamp.

2. Remove rubber plug and be sure 0-ring is in the groove inside the Compatible Fitting.

3. Cut tubing to correct length.

4. Use gage on tag attached to service valve to mark tube end for correct insertion depth. Insert tube into Compatible Fitting until it bottoms. (Tube should be inserted at least as far as mark on tubing.)

5. Tighten nut until it bottoms on back coupling flange. Tighten tube clamp.

SWEAT CONNECTION (use refrigerant grade tubing).

1. Remove locking nut and rubber 0-iing from inside of fitting. Loosen tube clamp entering condensing unit base.

Cut tubing to correct length.

Insert tube into Compatible Fitting. Wrap top and bottom of service valves in wet cloth to prevent damage by heat. Solder with low temperature (450 F) silver alloy solder. Tighten tube clamp.

Evacuate or purge system with field-supplied refrigerant.

ELECTRICAL DATA AND WIRING

Wiring — Field wiring must comply with local and

national codes. Install a branch circuit fused disconnect of adequate size to handle starting current. When making electrical connections, pro vide clearance at unit for refrigerant piping connections.

LINE POWER is brought thru unit base pan flange and thru hole provided in control box (Fig. 1). On

38GC101, 38GF106 (230-v, 1-ph) and 38GF103,

104 (208- and 230-v, 3-ph) units, line power

connections are made to pigtails supplied with

unit. Use approved splice connector. Do not use

aluminum field wire for splice connections unless

copper to aluminum adapters is used, and correct wiring techniques are followed.

On all other models connect line power to

contactor screw power terminals as indicated on

unit label diagram, i.e., connect power leads to

contactor terminals 21 and 23 on single-phase units, or 21, 22, and 23 on 3-phase units.

On all 3-phase units, do not connect a grounded high voltage leg to control circuit pigtail or terminal; connect leg to compressor pigtail or terminal. See label diagram.

CONTROL POWER is brought thru unit base pan (Fig. 1), and thru 7/8-in. hole into low voltage section of control box. All connections are made to pigtails supplied with unit (Fig. 2). Where supply voltage exceeds 150 volts to ground, or local codes require it, ground 24-volt control

circuit at field splice C.

Table 4 — Refrigerant Piping Data

Crankcase heater (standard on GF), liquid line filter-drier (standard on GF) and start capacitor with relay (accessory on GC101, 102, 103 and GF102) required Reduce liquid line size one diameter (mini /4-in OD) when evaporator is below condensing unit

TXV — Thermal Expansion Valve Cap. Tube — Capillary Tube

*3/4-in on 38GF.

THERMOSTAT SUBBASE TERMINALS (HH93AZ039 OR HH93YZ094)*

Arrangement A — Transformer External to

Condensing Unit (38GC Only)

THERMOSTAT SUBBASE TERMINALS (HH93AZ039 OR HH93YZ094)*

Arrangement B — Transformer in Condensing Unit

THERMOSTAT SUBBASE TERMINALS (HH93AZ039 OR HH93YZ094)*

LEGEND

C — Contactor IFM — Indoor Fan Motor CR — Control Relay IFR — Indoor Fan Relay

FS — Fan Switch LPS — Low-Pressure Switch (see Note 2)

HC — Heating Control Tran - Transformer

A Field Splice

_______

Field Wiring

_______

Factory Wiring

*Accessory (transformer standard on 38GF units)

fl nstall jumper between j^and when one 24-volt transformer is

used (Jumper supplied on HH93YZ094 )

ijiConnect to low speed indoor fan terminal when 2-speed fan is used

NOTES

1 If external transformer is used for condensing unit, it must have

a minimum of 10 va (38GC101), 17 va (38GC102), 27 5 va

(38GC103, 104), or 15 va (38GC145, 105)

2 Low pressurestat supplied on all 38GC units prior to Serial no

9000001 All 38GF units contain low pressurestat

Table 5 — Electrical Data

COMPR

MODEL

38GC

101 — 102-102310 70 14.8 103— 103310 103320 104— 104310 93 22 0 145— 105— 118 26 6

38GF

102— 102310

103—

103310 103320

104—

104310

145— 105—

106—

103— 104— 145— 105—

106— 110.0 103—

104—

145—

105—

106—

104—

145—

105—

106—

VOLTS/

LRA FLA

12 8 1.1

57 14 8 1 1 1 ■ 6'.

78 19 0

21 0 1 2

ZoU/ 1

Zo\j/ 1

208/3 90 0 18 6 1 5

230/3 78.0

460/ o

104

21.0

85 21 9

118 26 6

57 14 8 1.2

14 8

19 0 1 2

78 86 21 0 1 2

104

21 0 1.2 85 21 9 93 22 0 1 2

26 6

118

26.6 2 2 P 0 44:68

118

150 36 0 2 2

61 5 13 0 1 2

14 0 1 5

69 0

90 0

18 6

23 0 2.2

53 5

11 5 1 2 1 oliiiTsIM

60 0 126 1.5

16 1 1 5 16 1

78 5

20.5 2.2

100

30 0 39 3 8 3 1 5

39 3 50 0 10 3

6 5 1 5

8 3

BRANCH CIRCUIT

FAN

Wire Max

Sizet Ft

FLA

(AWG) Wirel

1?11 37ÌÌÌ 20

1 1 1 1 30

1.2 1% 0 3; 5? 1 5 1 2 1 ' . vl 1 5 8 liÉi; 45i^: 1 5 8; 6 4c &0

1 2

1 5

2 2 11 - ' s'

2 2

2 2 2 2

12 10 3; 50

lOilfi 36i:li 30

10,34,,.«4 35

12iii; 3>i:;ii: 25

li “ 30

10 § 3p 57 30

li "

11 4 li

1 25 iz 10 30

1: 10 16 0?

Ì . -z » «

12^107;^

Fuse*

1 ~w irm,

, ' - z /

•Z, , i

11 * i.

Amps

25 25

15 45 45

10 35 35 45 45 60

20 25 35 35 40

30 35

15 15

Arrangement C — Two Transformers

Fig. 2 — Control Circuit Wiring

FLA — Full Load Amps LRA — Locked Rotor Amps

*Maximum dual element fuse size.

•fWire sizes and lengths based on copper wire — Electrical data shown applicable to all models

NOTE:

Motors and controls will operate satisfactorily 10% above and 10% below unit voltage. On 3-phase units, phases must be balanced within 2%. Control circuit voltage is 24 volts on all units.

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