Carrier 38EC - Manual

Number One
Air Conditbninq
Maker
Installation, Start-Up ^ ^ 3
and Service Instructions
Division of
Carrier Corporation
Carrier Parkway • Syracuse f N Y 13221
Air-Cooled Condensing Units
INDEX
Page
SAFETY CONSIDERATIONS.................................. 1
INSTALLATION....................................................... 1-5
Step 1 — Check Equipment and
Jobsite.................................................................1
• UNPACK UNIT
• INSPECT EQUIPMENT
• COMPLETE OR CONSIDER
SYSTEM REQUIREMENTS
Step 2 — Make Piping Connections . . . . 2
• REPLACE THE ACCURATER™
REFRIGERANT CONTROL
PISTON IN THE INDOOR
COIL IF REQUIRED
• CONNECT REFRIGERANT LINES
Step 3 — Make Electrical
Connections........................................................5
• INSTALL A BRANCH CIRCUIT
DISCONNECT PER NEC
• ROUTE LINE POWER LEADS INTO
UNIT
• CONNECT GROUND LEAD AND
POWER WIRING
• CONNECT CONTROL POWER
WIRING
START-UP............................................................... 6-8
SERVICE.................................................................. 8-10
MAINTENANCE...................................................... 10-12
SAFETY CONSIDERATIONS
Installation and servicing of air conditioning
equipment can be hazardous due to system pressure
and electrical components. Only trained and quali­
fied service personnel should install, repair or
service air conditioning equipment.
Untrained personnel can perform basic mainten­
ance functions of cleaning coils and filters and re­
placing filters. All other operations should be
performed by trained service personnel. When
working on air conditioning equipment, observe
precautions in the literature, tags and labels attached
to the unit and other safety precautions that may
apply.
Follow all safety codes. Wear safety glasses and
work gloves. Use quenching cloth for brazing opera-
© Carrier Corporation 1982
tions. Have fire extinguisher available for all brazing
operations.
WARJ^iKG; Before performitsg $ervice or
maiatesjaBce operatjojjs
vam off
nsBiirt po’»er swiich. to indoor »nfi and outdoor
unit. Turn, off accessory heater poTser switch if
applicable- Electrical siioolc could cause per-
sortal irgnry.
Table 1 — Physical Data (Refer to Fig. 1.)
MODEL 38EC 018 024 030 036 042 048* 060*
OPER WT (lb) 116 130 137 165 18| 212 230
DIMENSlbNS (ft-in.)
Diameter A
Height B
1-9-3/4
2-2-3/8 1 2-8
2-5-1/4
2-2-3/8 1 2-8 1 3-2
CONNECTIONS (in.)
Suction (DDF)
Liquid (DDF) 5/8 3/4*
3/8
REFRIG LINES
Suction (in DDF)
Liquid (in DDF)
Recommended Field-Supplied Sizes
5/8 1 3/4 I 7/8 I 1-1/8
3/S
*Fora1-1/8in suction line on 38EC048,060, a 3/4-in x 1-1/8 in suction
valve connection adapter is available as an accessory See Table 3
INSTALLATION
Step 1 — Check Equipment and Jobsite
UNPACK UNIT — Move to final location. Slide
from carton taking special care not to damage serv­
ice valves or grilles.
INSPECT EQUIPMENT — File claim with ship­
ping company if damaged or incomplete.
COMPLETE OR CONSIDER SYSTEM RE­
QUIREMENTS before installation:
Consult local building codes and National Elec­
trical Code (NEC) for special installation
requirements.
When installing, allow sufficient space for airflow
clearance, wiring, refrigerant piping and service.
Maintain a minimum of 4 ft clearance from obstruc­
tions above and 18 in. on sides of unit. Maintain a
distance of 24 in. between condensing units. Posi­
tion so water from roof or eaves does not flow
directly on unit.
Install on a solid, level mounting pad. It is not
necessary to attach unit to pad but if desired or
required by local code, position tiedown bolts in
pad. Fasten unit to pad using 2 holes provided in unit
base. See Fig. 1.
Form 38EC-2SI