Carrier 38HDF018-036- User Manual
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Table of Contents:
- Page 2 – Unit
- Page 3 – Step 2 — Rig and Mount Unit; Do; Fig. 3 — Lifting Unit with Sling
- Page 6 – Step 4 — Make Electrical Connections; Do not; Fig. 5 — Typical Control Circuit Connections
- Page 7 – Table 2 — 38HDF Electrical Data
- Page 8 – Table 3 — 38HDR Electrical Data
- Page 11 – Fig. 8 — Condenser-Fan Mounting Positions
- Page 13 – Subcooling Method —; Operate unit a minimum of 15 minutes before checking
- Page 14 – Table 5 — Subcooling Charging Table; Compressor Lockout Switch —; The 38HDR units; MAINTENANCE; Coil should be washed out with water; TROUBLESHOOTING; See Fig. 9 for troubleshooting information.
- Page 15 – Fig. 9 — Troubleshooting the Cooling Cycle
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 02-38HD0001-SI
Printed in U.S.A.
Form 38HD-4SI
Pg 1
1-06
Replaces: 38HDC-3SI
Book 1
4
Tab
3e 2f
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . . . 1
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
Step 1 — Complete Pre-Installation Checks
. . . . . . 1
• UNPACK UNIT
• INSPECT SHIPMENT
• CONSIDER SYSTEM REQUIREMENTS
• MATCHING THE CONDENSING UNIT TO AN
INDOOR UNIT
Step 2 — Rig and Mount Unit
. . . . . . . . . . . . . . . . . . . . . 3
• MOUNTING ON GROUND
• MOUNTING ON ROOF
• RIGGING
Step 3 — Complete Refrigerant Piping
Connections
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
• CHECK ACCURATER CONTROL
• FILTER DRIER
• MAKE PIPING SWEAT CONNECTORS
• PROVIDE SAFETY RELIEF
Step 4 — Make Electrical Connections
. . . . . . . . . . . 6
• CONTROL CIRCUIT WIRING
• POWER WIRING
• CONNECTIONS TO DUCT-FREE FAN COIL UNITS
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
SERVICE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-14
MAINTENANCE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . . .14,15
SAFETY CONSIDERATIONS
Installing and servicing air conditioning equipment can be
hazardous due to system pressure and electrical components.
Only trained and qualified service personnel should install or
service air conditioning equipment.
Untrained personnel can perform basic maintenance, such
as cleaning and replacing filters. All other operations should be
performed by trained service personnel. When working on air
conditioning equipment, observe safety precautions in litera-
ture, tags, and labels attached to unit.
Follow all safety codes. Wear safety glasses and work
gloves. Use quenching cloth for brazing operations. Have fire
extinguisher available. Read these instructions
thoroughly
.
Consult local building codes and the National Electrical Code
(NEC) for special installation requirements.
INSTALLATION
Step 1 — Complete Pre-Installation Checks
UNPACK UNIT (See Fig. 1) — Move the unit to final loca-
tion. Remove unit from carton, being careful not to damage
service valves and grilles.
INSPECT SHIPMENT — File a claim with the shipping
company if shipment is damaged or incomplete. Check unit
nameplate to ensure unit matches job requirements.
CONSIDER SYSTEM REQUIREMENTS — Consult local
building codes and NEC for special installation requirements.
Allow sufficient space for airflow clearance, wiring, refrig-
erant piping, and servicing unit. See Fig. 2.
Locate unit so that condenser airflow is unrestricted on both
sides. Refer to Fig. 2.
Unit may be mounted on a level pad directly on base legs or
mounted on raised pads at support points. See Fig. 2 for center
of gravity.
MATCHING
THE
CONDENSING
UNIT
TO
AN
INDOOR UNIT — The 38HDF,HDR units can be matched to
a corresponding indoor unit. The 38HDF018-036 units can be
matched with an in-ceiling cassette or high wall indoor unit.
The 38HDR unit can be matched with under-ceiling and resi-
dential fan coils. Refer to separate indoor unit literature for
more information.
Before installing or servicing system, always turn off main
power to system. There may be more than one disconnect
switch. Turn off accessory heater power if applicable. Elec-
trical shock can cause serious personal injury.
Puron® (R-410A) refrigerant systems operate at higher
pressures than standard R-22 systems. Do not use R-22 ser-
vice equipment or components on Puron refrigerant equip-
ment. If service equipment is not rated for Puron refrigerant,
equipment damage or personal injury may result.
38HDF018-036
Duct Free Condensing Units
38HDR018-060
Ducted Condensing Units
Fig. 1 — 38HDF,HDR Unit
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Summary
2 (FIELD PROVIDED AND INST ALLED) Fig. 2 — 38HDF ,HDR Unit Dimens ions NO T E : Dim e n sio n s sh o w n in fe e t- in ch e s . Dim e n s io n s in ( ) a re m illim e te rs . UNIT M ODE L S CH ASSIS SI Z E (R ef er en ce) ABC D E F G H J K L N P 3 8 HDF Un it Size 3 8 HDR Un it Size 01 8 0 1 8 0 2 ′...
3 Step 2 — Rig and Mount Unit MOUNTING ON GROUND — Mount unit on a solid, levelconcrete pad. Position unit so water or ice from roof does notfall directly onto unit. Accessory stacking kits can be usedwhen units are to be stacked. See installation instructionsprovided with the accessory kit. Use fie...
6 Step 4 — Make Electrical Connections CONTROL CIRCUIT WIRING — Control voltage is 24 v(40 va minimum). See Fig. 5 and unit label diagram for field-supplied wiring details. Route control wire through opening inunit side panel to connection in unit control box. NOTE: For wire runs up to 50 ft, use no...
