Carrier 38ED - Manual (Page 2)

4'-0" OVERHEAD SPACE REQUIRED
FOR SERVICE AND AIRFLOW
Table 1 — Physical Data (Refer to Fig. 1)
l-t DIAM HOLE
FOR POWER
WIRING
LIQUID VALVE SERVICE PORT
CONDENSER AIRFLOW
1-6 AIRFLOW
AND SERVICE
.CLEARANCE
SUCTION VALVE SERVICE PORT
♦CONCRETE PAD SHOULD WEIGH TO 2 TIMES WEIGHT OF UNIT
Certified dimension drawings are available upon request
Fig. 1 — Dimensions. Connections and
Mounting Pad (Refer to Table 1)
When evaporator is more than 2 sizes larger than
condensing unit (i.e. 38ED018I28HQ036), remove
AccuRater and use a bleed-type thermal expansion
valve (TXV) for refrigerant control. Size TXV to
nominal capacity of condensing unit.
Replace piston, only if required (Table 2), before
connecting refrigerant lines. Piston replacement in­
structions are included in evaporator installation
book. After system installation is complete, use
Charging Chart to check and/or adjust refrigerant
charge.
MODEL 38ED 018 024 030 036 042 048 060
OPER WT (lb) 167 190 190 223* 246 248 278
DIMENSIONS
Diameter A
Unit Height B
2-5%
2-2'%( 2-8% ¡ 3 - 1 %
3-2«/„
2-8% ( 3-2V b 4
CONNECTIONS {in )
Suction (ODF)*
Liquid (ODF)*
3/4
3/8
REFRIG LINES (in )
Suction (ODF)
Liquid (ODF)
3/4 1'/e*
3/s
*For a IVs-in suction line on 38ED036,042,048,060, a %-in x IVs-in
suction valve connection adapter is available as an accessory See Table 3
Table 2 — Optimization Chart
(Outdoor air design temperature, db-F.
100 F and beiow)
MODEL
ACCURATER™ PISTON NO
Evap Size (Coil or Fan Coil)
018 024 030 036 042- 048 060 28AR062
018 50 52 TXV __ — — —
024 — ^63 65 TXV — — —
030 -- — 67 TXV —
036 - — - 70 TXV —
042 — — — 78 W№ 80 TXV
048 ___ — — -
■ 84 S ■i:-:-v86
060 - - —
-
m
Factory-supplied piston Obtain replacement pistons thru local
Carrier distributor
Fig. 2 — AccuRater (Bypass Type)
Components
Condensing Units Connected to Carrier-Approved
Evaporators — Condensing Units contain correct
system refrigerant charge for operation with evap­
orator of the same size when connected by 25 ft or
less of field-supplied or Carrier accessory tubing.
Check refrigerant charge for maximum efficiency
(see Refrigerant Charging, page 6).
Step 2 — Make Piping Connections — Con­
densing units may be connected to evaporator sec­
tions using Carrier accessory tubing package (Table
3) or field-supplied tubing of refrigerant grade,
correct size and condition (Table 1). For tubing
requirements beyond 50 ft, obtain information from
local Carrier distributor.