Carrier 38SE - Manual (Page 2)

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.
HH01AD040
HH93AZ040
HH51AR001
HH07AT070,
HH07AT074
HH93AZ076
HH01AD042
HH93AZ042
DESCRIPTION
Low-Voltage Control — Honeywell Deluxe Thermostat
Thermostat Subbase
Comfort Control Center (Use with HH01AD040.)
Low-Voltage Control — Honeywell Thermostat
Thermostat Subbase (with Automatic Changeover)
Low-Voltage Control — Honeywell Thermostat
Thermostat Subbase
HH01YA092
HH93YZ094
32LT900301
Low-Voltage Control — Grayson Thermostat
Thermostat Subbase
Solid State Head Pressure Control,
and/or motor required.
Special field-installed fan
38GC900-152
38GB900021
UNIT
Motor No.
Fan No.
UNIT
Motor No.
38SE002,003
HC38VE851
LA01AA020
38GR002,003,004,045
HC38VE851
38SE004
HC40VL701
LA01AA023
38GR005,006
HC40VL701
Indoor Fan Relay (Six — 38BA400693)
Thermal Expansion Valve (Six — EA61DC100)
TUBING PACKAGES
Len gth
(ft)
L iquid Suction*
UNIT
OD
(in.)
Tube End
OD
(in.)
OD
(in.)
Tube End
OD (in.)
Evap Cond
38GC900031 10 % Ve Ve Vet Ve
38GC900041 18 Ve Ve Ve Vet Ve
38GS900221 25 Ve Ve Ve Vet Ve 38SE002, 38GR002
38GC900061 35 Vie Ve Ve Vet Ve
38GC900191 50 % Ve Ve Vet Ve
38GC900071 10 V
/8 Ve % Ve Ve
38GC900081 18 V
/8 Ve V /4 Ve
V
/4
38SE003,004,045,055
38GC900091
38GC900101 25
35 Ve
Ve
%
/8
Ve
Ve
Ve
Ve
V /4
Ve :
38GR003,004,045,005
38GC900in 50 Ve
V
'8 Ve Ve Ve
*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.