Carrier 38EH - Manual (Page 2)

Table 1 Physical Data (Refer to Fig. 1)
MODEL 38EH 015 018 024 030 036 042 048 060
OPER WT (lb)* 116 131 148 171 177 178 210 236
REFRIGERANT
Control
CONDFAN
Air Discharge
Air Qty (dm)
Motor Rpm (60 Hz)
Motor Hp_________
CONOCOIL(fins/in.)
Tube Diam
Rows
Face Area (sq ft)
DIMENSIONS (ft-ln.)
Diameter A
Height___________ B
CONN (in. ODF)
Suction
Liquid________
REFRIG LINES (In. ODF)
Suction
Liquid
22
AccuRater™ (Installed in i.D. Coil)
Propeller Type, Direct Drive, 1-Speed
Vertical
1850 3100 1 4000
830 I 850
V .0 I________ '/a I '/; I %
16
'k in , E-coil
1
I
2
12.37 17.11
1-9% 2-5'/4
2-7
Compatible Fitting (Suction and Liquid)
% I 14
I'/at
'Weight increases slightly with addition of any accessories
t38EH048,060 require a I'/a-ln suction line for optimum performance. A
%- X I'/a-in connection adapter accessory (Carrier Part No. 28AU900061)
is available If a %-in accessory tubing package is used, expect a 3%
capacity loss
Table 2 — AccuRater™ Chart
COND UNIT
38EH
ACCURATER PISTON NO.
Indoor Coil Size (28—)
and Indoor Fan Coil Size (40—)
(1- and 3-Ph)
014/
015
018 024 030 036 042 048
060/
062
015 46 46 TXV — — —
018 — 49 49 TXV — — — —
024 — 61 61 TXV — — —
030 — — — 70 70 TXV — —
036
— — — —
76 76 TXV —
042 — _ — — — 82 82 TXV
048
— __ — — — — 80 80
060
— — — — — — —
98
FLARE NUT
FLARE
CONNECTION
Fig. 2 — AccuRater™ (Bypass Type) Components
A CAUTION
DO NOT BURY MORE THAN 3 FT OF REFRIG­
ERANT TUBING IN GROUND. If any section of
tubing is buried, there must be a 6-in. vertical rise
to the valve connections on the outdoor unit. If more
than the recommended length is buried, refrigerant
may migrate to cooler buried section during extended
periods of unit shutdown, causing refrigerant slug­
ging and possibly compressor damage at start-up.
CONNECT REFRIGERANT LINES to fittings on out­
door unit suction and liquid service valves (Fig. 1). Unit
Compatible Fittings permit mechanical (quick-connect)
or sweat connections.
Compatible Fitting on outdoor section has aluminum
plugs located beneath compatible nut — one plug each
on suction and liquid valves. Plugs keep contaminants
out of Compatible Fitting.
A CAUTION
When removing compatible nut, be careful pressure
build-up does not cause aluminum plug(s) to blow
and cause personal injury. After tubing is hooked up,
discard plug(s).
Models 38EH048,060 — When using 1-1/8 in. field-
supplied refrigerant suction line, sweat-connect suction
line to 1-1/8 in. end of required connection adapter. Be
sure to provide a heat sink at the service valve to prevent
damage during sweating operation. Connect 3/ 4-in. end of
adapter to unit suction line Compatible Fitting. Connect
liquid refrigerant line to unit. When a 7/8-in. field-
supplied suction line is used, provide a field-supplied
3/4-in. to 7/8-in. suction line adapter (not necessary if
38LS accessory tubing is used).
Mechanical Connection— Mate one set of connections
at a time.
1. Remove nut on Compatible Fitting.
2. Remove plug and be sure O-ring is in the groove
inside the Compatible Fitting.
3. Cut tubing to correct length, deburr and size as neces­
sary. Slide nut onto tube
4. Insert tube into Compatible Fitting until it bottoms.
Tighten nut until it bottoms on shoulder of fitting
or valve. Keep tube bottomed in Compatible Fitting
while tightening nut.
NOTE: If using Carrier accessory tubing package,
make connections within 2 minutes to avoid refrig­
erant loss.
5. If using field-supplied tubing evacuate or purge system
using field-supplied refrigerant.
A CAUTION
If undersized, damaged or elliptically-shaped tubing
is used when making Compatible Fitting, leaks may
result.
Sweat Connection— Use refrigerant grade tubing.
1
.
2 .
3.
4.
5.
Remove locking nut, plug, rubber O-ring and Schrader
core and cap from valve service port.
Cut tubing to correct length, deburr and size as
necessary.
Insert tube in Compatible Fitting until it bottoms.
NOTE: Wrap top and bottom of service valves in wet
cloth to prevent damage by heat. Solder with low-
temperature (430 F) silver alloy solder.
Replace Schrader core and cap.
Evacuate or purge system using field-supplied
refrigerant.