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NumberOne
AirConditioning
Mater
e
Division of Carrier Corporation
Carrier Parkway ♦ Syracuse NY 13201
Air-Cooled Condensing Units
SUCTION LINE CONN (ON SERVICE VALVE)
LIQUID LINE CONN.(ON SERVICE,!
VALVE)
5."|3'*
16 “ ' 8
MTG SLOTS |
|
(USE ANY 2) -------------- |
10^ |
uSl SPACE REQUIRED FOR SERVICE
38SE,GR
DIAM HOLE
FOR CONTROL WIRIN(3
TRANSPORTATION DAMAGE
File claim with shipping company if shipment is damaged or incomplete.
PRELIMINARY SURVEY
Consult local building codes and National Electrical Code (NEC) for special installation requirements.
When installing unit, allow sufficient space for airflow clearance, wiring, refrigerant piping and servicing unit. Recommended minimum requirement is 3 ft (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 2 holes in unit base may be used to fasten unit to pad.
38GR Condensing Units Connected to Carrier-Approved Evaporators with Carrier Accessory Tubing — 38GR units contain correct refrigerant charge when evaporator is same size, or one size larger than condensing unit and are connected with Carrier accessory tubing. Check refrigerant charge when tubing lengths are above 50 feet. See Refrig erant Charging for details.
38SE Condensing Units Connected to Carrier-Approved Evaporators — 38SE units contain correct system refrig erant charge when evaporator is same size as condensing unit, and they are connected with 25 ft or less of field-supplied tubing of recommended size (see Piping Connections) or 50 ft or less of Carrier accessory tubing. Check refrigerant charge for maximum system efficiency. See Refrigerant Charging for details.
38GR,SE Condensing Units Connected to Non-Carrier Evaporators — Check refrigerant charge when the 38GR,SE is added to a system in which other than a Carrier approved evaporator is being used or where the evaporator has been previously installed. Field-supplied refrigerant piping must be in accordance with Refrigerant Piping Data table.
Use an evaporator coil with a bleed-type expansion device. If coil does not have a bleed-type expansion device it may be necessary to add an accessory start capacitor and relay to condensing unit. This would require removing compressor start thermistor (PTC device) on units so equipped.
CONCRETE MOUNTING PAD^(SQUARE OR CIRCULAR)
^CONCRETE PAD SHOULD WEIGH |-| TO 2 TIMES WEIGHT OF UNIT
Fig. 1 — Dimensions, Connections and Mounting Pad
PIPING CONNECTIONS
The 38GR,SE condensing units can be connected to evaporator sections using Carrier accessory tubing package or field-supplied tubing of refrigerant grade (Accessory
Table 1 — Installation Data
CONDENSING UNIT |
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38GR |
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38SE |
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|
002 |
003 |
004 |
|
045 |
|
005 |
006 |
002 |
003 |
004 |
045 |
055 |
||
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||||||||||||
OPERATING WT (lb) |
|
151 |
170 |
182 |
194 1 234 |
|
260 |
176 |
180 |
192 |
248 |
255 |
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DIMENSIONS |
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Diam A |
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2-5У4 |
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2-5У4 |
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(ft-in.) |
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Height В |
2-4 |
2-4 |
2-4 |
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2-4 |
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2-8 |
2-8 |
2-4 |
2-4 |
2-8 |
3-8 |
3-8 |
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REFRIG |
|
Suet ODF |
% |
y. |
L |
|
V |
|
’/4* |
3/* |
V |
У4 |
У4* |
3/*- |
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'A |
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4 |
4 |
%* |
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CONN. |
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Liq ODF |
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V |
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Ys |
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4 |
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*38GR005,006 and 38SE004,045,055 supplied with 3/4-in to 1 1 /8-in suction valve connection adapter (field installed) for 1 1 /8-in suction line (field supplied)
© Carrier Corporation 1975 |
Fornn 38SE-3SI |
tubing not available for 38GR006.) See Table 2 for accessory tubing sizes and Table 3 for recommended field-supplied tubing sizes. (Where evaporator is 20 ft or more below condensing unit, reduce liquid line size one diameter — min 1/4-in. OD.)
A capacity reduction results if accessory tubing is used in 38SE004,045,055 systems. For example, when a 25 ft accessory tubing package is used, there is a capacity reduction of 2 1/2% on 38SE004, 3 3/4% on 38SE045 and 5% on 38SE055 systems. For maximum capacity from these systems, use tubing sizes shown in Table 3.
Connection Recommendations — Do not use damaged or contaminated tubing. Do not use less than 10 ft of liquid line. Do not cut 5/16-in or 1/4-in. liquid line. Bend or coil to fit.
If accessory tubing package 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) Always evacuate or purge if field-supplied tubing is used.
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 fittings permit mechanical (quick-connect) or sweat connections.
38GR005,006; 38SE004.045.055 Units - When using 1 1/8-in. field-supplied siictlSff'line, remove suction line adapter taped to compressor suction line. Connect 3/4-in. end of adapter to unit suction line compatible fitting. Sweat connect refrigerant suction line to 1 1/8-in. end of adapter. Connect liquid refrigerant line to unit. When a 7/8-in. field-supplied suction line is used on 38SE003 or 38GR045, a field-supplied 3/4-in. to 7/8-in. suction line adapter must be provided.
MECHANICAL CONNECTION (Mate one set of connec tions at a time.)
1. Loosen nut on compatible fitting one turn. Do not remove.
2.Remove 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 com patible 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
SWEAT CONNECTION (Use refrigerant grade tubing.)
1. Remove locking nut, rubber 0-ring and Schrader core from valve.
2. Cut tubing to correct length.
Table 2 — Accessories
PART NO. |
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DESCRIPTION |
HH01AD040 |
Low-Voltage Control — Honeywell |
Deluxe Thermostat |
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HH93AZ040 |
Thermostat Subbase |
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HH51AR001 |
Comfort Control Center (Use with HH01AD040.) |
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HH07AT070, |
Low-Voltage Control — Honeywell Thermostat |
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HH07AT074 |
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HH93AZ076 |
Thermostat Subbase (with Automatic Changeover) |
||||
HH01AD042 |
Low-Voltage |
Control |
— |
Honeywell |
Thermostat |
HH93AZ042 |
Thermostat Subbase |
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HH01YA092 |
Low-Voltage Control — Grayson Thermostat |
||||
HH93YZ094 |
Thermostat Subbase |
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32LT900301 |
Solid State |
Head |
Pressure |
Control, |
Special field-installed fan |
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and/or motor required. |
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UNIT |
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38SE002,003 |
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38SE004 |
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Motor No. |
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HC38VE851 |
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HC40VL701 |
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Fan No. |
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LA01AA020 |
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LA01AA023 |
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UNIT |
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38GR002,003,004,045 |
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38GR005,006 |
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Motor No. |
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HC38VE851 |
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HC40VL701 |
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38GC900-152 |
Indoor Fan Relay (Six — 38BA400693) |
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38GB900021 |
Thermal Expansion Valve (Six — EA61DC100) |
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TUBING PACKAGES |
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L iquid |
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Suction* |
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Len gth |
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OD |
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Tube End |
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OD |
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Tube End |
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UNIT |
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OD |
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OD (in.) |
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(ft) |
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(in.) |
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(in.) |
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(in.) |
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Evap |
Cond |
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38GC900031 |
10 |
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% |
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Ve |
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Ve |
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Vet |
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Ve |
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38GC900041 |
18 |
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Ve |
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Ve |
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Ve |
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Vet |
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Ve |
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38GS900221 |
25 |
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Ve |
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Ve |
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Ve |
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Vet |
|
Ve |
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38SE002, 38GR002 |
38GC900061 |
35 |
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Vie |
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Ve |
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Ve |
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Vet |
|
Ve |
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38GC900191 |
50 |
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% |
|
Ve |
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Ve |
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Vet |
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Ve |
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38GC900071 |
10 |
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V |
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Ve |
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% |
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Ve |
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Ve |
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|
/8 |
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38GC900081 |
18 |
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V |
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Ve |
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V |
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Ve |
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V |
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/8 |
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/4 |
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/4 |
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38SE003,004,045,055 |
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38GC900091 |
25 |
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Ve |
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% |
|
Ve |
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Ve |
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V |
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/4 |
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38GR003,004,045,005 |
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38GC900101 |
35 |
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Ve |
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/8 |
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Ve |
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Ve |
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Ve: |
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38GC900in |
50 |
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Ve |
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V |
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Ve |
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Ve |
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Ve |
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'8 |
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*Suction line is insulated and has a 90 bend at one end fFor 5/8-in evaporator connection, cut off 3/4-in. end.
NOTE: Do not cut 3/8-in OD liquid line to a length shorter than 10 feet Do not cut 5/1 6-or 1/4-in liquid line.
Table 3 — Field-Supplied Piping Data
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MAX COND |
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REFRIGERANT LINE LENGTH (ft) |
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COND |
REFRIG |
UNIT HT (ft) |
25-50 |
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51-75 76-100 |
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101-125 |
126-150 |
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UNIT |
CONTROL |
Above |
Below |
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Line Diameter (in. OD) |
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Evap |
Evap |
Suet |
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Liq |
Suet |
Liq |
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Suet |
Liq |
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Suet |
Liq |
Suet |
Liq |
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TXV |
90 |
90 |
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38GR002 |
Cap. Tube or |
150 |
50 |
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% |
V4 |
Vs |
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V4 |
Vs |
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V4 |
Vs |
V4 |
Vs |
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AccuRater'*'^ |
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TXV |
90 |
90 |
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38GR003 |
Cap. Tube or |
150 |
50 |
% |
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% |
V4 |
Vs |
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V4 |
Vs |
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V4 |
Vs |
V, |
Vs |
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AccuRater |
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TXV |
90 |
90 |
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38GR004 |
Cap. Tube or |
150 |
50 |
^4 |
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% |
V4 |
Vs |
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Vs |
Vs |
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Vs |
V2 |
Vs |
Va |
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AccuRater |
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TXV |
90 |
90 |
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38GR045 |
Cap. Tube or |
ISO |
50 |
% |
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% |
Vs |
V |
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Vs |
V. |
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Vs |
V |
Vs |
Va |
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AccuRater |
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TXV |
90 |
90 |
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38GR005 |
Cap. Tube or |
150 |
50 |
IVs |
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% |
IVs |
V |
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IVs |
V |
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IVs |
V |
IVs |
Vs |
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AccuRater |
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TXV |
90 |
90 |
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38GR006 |
Cap. Tube or |
150 |
50 |
iVs |
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% |
IVs |
Vs |
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IVs |
Vs |
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IVs |
Vs |
IVs |
Vs |
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AccuRater |
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TXV |
90 |
90 |
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38SE002 |
Cap. Tube or |
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V |
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V |
V |
Vs |
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Vs |
Vs |
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V |
Vs |
Vs |
Vs |
150 |
50 |
u |
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'8 |
/A |
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/8 |
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AccuRater |
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TXV |
90 |
90 |
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38SE003 |
Cap. Tube or |
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Vs |
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V |
Vs |
V |
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Vs |
Vs |
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Vs |
Vs |
Vs |
V |
150 |
50 |
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'8 |
'8 |
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'8 |
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AccuRater |
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TXV |
90 |
90 |
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38SE004 |
Cap. Tube or |
150 |
50 |
IVa |
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% |
IVs |
% |
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IVs |
Vs |
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IVs |
Vs |
IVs |
Vs |
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AccuRater |
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TXV |
90 |
90 |
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38SE045 |
Cap. Tube or |
150 |
50 |
IVs |
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\ |
IVs |
V |
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IVs |
V2 |
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IVs |
V |
IVs |
Va |
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AccuRater |
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TXV |
90 |
90 |
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38SE055 |
Cap. Tube or |
150 |
50 |
iVa |
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% |
IVs |
V |
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IVs |
V. |
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IVs |
Va |
IVs |
Vs |
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AccuRater |
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Cap. Tube — Capillary Tube
TXV — Thermal Expansion Valve
NOTES:
1 Systems with over 50 ft separation between condensing unit and evaporator require refrigerant charge adjustment to ensure the proper superheat at compressor See Refrigerant Charging, page 5 Oil charge adjustment may also be required
2 Reduce liquid line diameter by 1/8-in OD (minimum 1/4-in OD) when evaporator is 20 ft or more below condensing unit
3.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.
4.Replace Schrader core.
5.Evacuate or purge system with field-supplied refrigerant.
SERVICE DOOR
Service door can be opened or removed for wiring or servicing unit
Remove 3 screws from left side of service door (Fig. 1) to swing door open.
Door Removal — Turn power off. Disconnect wiring from
control panel mounted on door. Refer to Fig. 7 and 8. After wiring is disconnected, lift door from roll pin hinges.
ELECTRICAL DATA AND WIRING
Field wiring must comply with local and national fire, safety and electrical codes. Voltage to unit must be within
± 10% of voltage indicated on nameplate. On 3-phase units, phases must be balanced within 2%. Contact local power company for correction of improper line voltage.
See Table 4 for recommended wire and fuse sizes. When making electric connections, provide clearance at unit for refrigerant piping connections.
Table 4 — Electrical Data
COND |
|
OPER |
|
COMPR |
|
FAN |
|
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BRANCH CIRCUIT |
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|||
V/PH |
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Wire |
Max |
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VOLTS* |
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Fuse |
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UNIT |
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LRA |
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FLA |
FLA |
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Sizet |
Ftt |
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Max |
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Min |
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Ampst |
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(AWG) |
Wire |
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38GR002--- |
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72.0 |
|
14.8 |
1.0 |
12 |
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32.0 |
|
30 |
38GR0023I0 |
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72.0 |
|
14.8 |
1 0 |
12 |
1. ' |
32 0 |
|
30 |
38GR003--- |
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90.0 |
|
19.2 |
1.1 |
10 |
|
39 0 |
|
40 |
38GR003310 |
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90.0 |
|
19.2 |
1.1 |
10 |
|
39.0 L |
|
40 |
38GR004--- |
230/1 |
253 |
|
207 |
100.0 |
|
22.9 |
1 3 |
10 |
|
33.0 |
|
50 |
38GR0043J0 |
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|
100 0 |
|
22 9 |
1 3 |
10 |
|
33-0 |
|
50 |
38GR045--- |
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|
94.0 |
|
23.9 |
1.3 |
8 |
|
49.0 |
|
50 |
38GR005--- |
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|
106.0 |
|
27.9 |
2.0 |
8 |
|
42 0 Í |
|
60 |
38GR006--- |
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|
|
135.0 |
|
39.0 |
2.0 |
6 |
|
47.0 |
|
80 |
38GR003--- |
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|
60.0 |
|
13.0 |
1.1 |
12 |
|
42.0 |
|
30 |
38GR0034Í0 |
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|
70.0 |
|
13.0 |
1 1 |
12 |
Ì |
42.0 |
|
30 |
38GR004--- |
|
|
|
|
69.0 |
|
14 0 |
1.3 |
12 |
|
39.0 |
|
30 |
38GR0044J0 |
200/3 |
220 |
|
180 |
80 0 |
|
14 0 |
1.3 |
12 |
1.'^ zL. |
39.0 i: ' |
|
30 |
38GR045--- |
|
|
|
|
79.0 |
|
16.7 |
1.3 |
12 |
Í |
33 0 i |
|
35 |
38GR005--- |
|
|
|
|
87.0 |
|
18.3 |
2.0 |
10 |
r |
46.0 |
|
40 |
38GR006--- |
|
|
|
|
113.0 |
|
24.0 |
2 0 |
8 |
|
64.0 / |
|
50 |
|
|
|
|
|
|
|
|
|
|
||||
38GR003--- |
|
|
|
|
50.0 |
|
11.5 |
1 1 |
12 |
|
|
|
25 |
38GR0035Í0 |
|
|
|
|
60.0 |
|
11.5 |
1 1 |
12 |
mf. |
52.0 1 |
|
25 |
38GR004--- |
|
|
|
|
60.0 |
|
12.6 |
1.3 |
12 |
|
47.0 |
|
25 |
38GR0045J0 |
230/3 |
253 |
|
207 |
70.0 |
|
12.6 |
1 3 |
12 |
|
47.0 |
|
25 |
38GR045--- |
|
|
|
|
67.0 |
|
14 3 |
1 3 |
12 |
|
42 0 |
|
30 |
38GR005--- |
|
|
|
|
70.0 |
|
16.4 |
2 0 |
10 |
|
56.0 |
|
35 |
38GR006--- |
|
|
|
|
98.0 |
|
19.9 |
2 0 |
10 |
|
47 0 |
|
45 |
38GR004--- |
|
|
|
|
30.0 |
|
6.5 |
5 |
14 |
\ - x i : |
110.0 |
|
15 |
38GR004610 |
|
|
|
|
35.0 |
|
6.5 |
5 |
14 |
|
110.0 |
|
15 |
38GR045--- |
460/3 |
506 |
|
414 |
35 0 |
|
7.2 |
.5 |
14 |
i n ; |
100.0 1 |
|
15 |
38GR005--- |
|
|
|
|
35.0 |
|
8 8 |
1.3 |
14 |
1 n |
81.0 Í |
|
20 |
38GR006--- |
|
|
|
|
49.0 |
|
10 4 |
1.3 |
14 |
|
70.{' |
|
20 |
38SE002--. |
|
|
|
|
65.0 |
|
10.3 |
.8 |
14 |
|
2 9 1 '■ |
|
20 |
38SE003--- |
|
|
|
|
72.0 |
|
14.8 |
.8 |
12 |
10 |
32 0 |
$ X Ù |
30 |
38SE004--- |
230/1 |
253 |
|
207 |
90.0 |
|
19 2 |
.8 |
10 |
|
40.0 |
|
40 |
38SE045--- |
L__ |
|
|
|
94.0 |
|
23 9 |
1 3 |
10 |
» |
32 0 SBJB |
50 |
|
38SE055--- |
|
|
|
106.0 |
|
28.0 |
2.2 |
10 |
|
|
430 |
60 |
|
Corresponding wire sizes and wire lengths
FLA — Full Load Amps
LRA — Locked Rotor Amps
--------Electrical data shown applicable to all units for which com plete model numbers are not shown Example: 38GR003---
applies to all 003 models except 38GR003Ji0.
*Permissible limits of the voltage range at which the unit will oper ate satisfactorily
tCopper wire sizes and lengths Use latest National Electrical Code (NEC) for aluminum wire sizing
-> Maximum dual element fuse size
NOTE Control circuit voltage is 24 volts on all units On 3-phase units, phases must be balanced within 2%
|
|
— GROUND LEAD- |
|
GROUNDING LUG |
|
I-PHASE |
|
|
|
3-PHASE |
CONN TO |
|
- |
-----------------BRN _ |
CONN.TO |
FUSED |
|
|
|
FUSED |
DISCONNECT |
L |
■ |
ORN |
DISCONNECT |
||||
|
|
|
|
|
|
|
|
|
BLK |
|
|
— |
-------- |
|
|
|
|
|
(38GR ONLY) |
|
|
|
|
COND UNIT |
A—A |
Splice Connections |
|
|
|
--------- |
Field Wiring |
|
|
|
--------- |
Factory Wiring |
|
|
|
Fig. 2 — Line Power Connections
Install a Branch Circuit Fused Disconnect of adequate size to handle unit starting current Locate disconnect within sight of and readily accessible to the unit, per section 440-14 of National Electrical Code (NEC).
Bring Line Power Leads Into Unit — Extend leads from fused disconnect thru hole provided in base pan (Fig. 1) and into unit junction box.
CONNECT GROUND LEAD TO GROUND LUG OR SCREW IN JUNCTION BOX for safety. Connect power wiring. See Fig. 2. Splice line power leads to brown and orange pigtails on 1-phase units or brown, orange and black pigtails on 3-phase units. Use wire nuts supplied with unit. Tape each connection. When aluminum field wire is used, lubricate splices with splice compound (also supplied) before using wire nuts.
Control Power (24 v) wiring is brought thru hole provided in unit base pan (Fig. 1) and into low-voltage section of unit junction box. Splice control leads to yellow pigtails on control relay. See Fig. 3. For aluminum wire splices use factory supplied and lubricated wire nuts. Furnace or fan coil transformer must be used as 24-v supply for system as shown in Fig. 3. All 38SE units are equipped with transformer used to power contactor thru unit control circuit only, and must not be used to power thermostat circuit.
1076
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