Carrier 48HJ015-025- Manual
Carrier 48HJ015-025– Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.
Table of Contents:
- Page 2 – Fig. 1 — Roof Curb and Horizontal Adapter Details
- Page 3 – Step 2 — Rig and Place Unit —; Instructions continued on page 7.; Dimension A; Fig. 3 — Rigging Details
- Page 4 – Table 1 — Physical Data
- Page 7 – Step 3 — Field Fabricate Ductwork —; Secure all; Step 4 — Make Unit Duct Connections —; Unit; Step 5 — Install Flue Hood —; Flue hood is shipped; Fig. 7 — Concentric Duct Air Distribution; Fig. 8 — Concentric Duct Details
- Page 8 – Step 6 — Trap Condensate Drain —; for drain location. One; Step 7 — Install Gas Piping —; Unit is equipped for; Fig. 10 — Combustion Fan Housing Location
- Page 9 – Step 8 — Make Electrical Connections; When installing units, provide a disconnect per NEC; Table 2 — Electrical Data; Fig. 14 — Field Power Wiring Connections
- Page 10 – Step 9 — Make Outdoor-Air Inlet Adjustments; Fig. 15 — Field Control Thermostat Wiring
- Page 12 – Fig. 23 — Horizontal Supply/Return Fan Performance
- Page 15 – Table 4 — Fan Performance Data, 48HJ017 Units
- Page 16 – Table 5 — Fan Performance Data, 48HJ025 Units; Table 6 — Air Quantity Limits
- Page 17 – Gas Heat —
- Page 18 – Inspect unit interior at beginning of each heat-; Lubrication; Fig. 25 — Typical Gas Heating Section
- Page 19 – Adjustment
- Page 20 – Motor Section
- Page 21 – Power Failure —
- Page 22 – Fig. 37 — Typical Heating Section
- Page 30 – PACKAGED SERVICE TRAINING
Installation Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . 1
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
Step 1 — Provide Unit Support
. . . . . . . . . . . . . . . 1
• ROOF CURB
• ALTERNATE UNIT SUPPORT
Step 2 — Rig and Place Unit
. . . . . . . . . . . . . . . . . . 3
• POSITIONING
• ROOF MOUNT
Step 3 — Field Fabricate Ductwork
. . . . . . . . . . . . 7
Step 4 — Make Unit Duct Connections
. . . . . . . . 7
Step 5 — Install Flue Hood
. . . . . . . . . . . . . . . . . . . 7
Step 6 — Trap Condensate Drain
. . . . . . . . . . . . . 8
Step 7 — Install Gas Piping
. . . . . . . . . . . . . . . . . . . 8
Step 8 — Make Electrical Connections
. . . . . . . . 9
• FIELD POWER SUPPLY
• FIELD CONTROL WIRING
Step 9 — Make Outdoor-Air Inlet
Adjustments
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
• MANUAL OUTDOOR-AIR DAMPER
• OPTIONAL FACTORY-INSTALLED
ECONOMIZER
Step 10 — Install Outdoor-Air Hood
. . . . . . . . . . 10
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-17
SERVICE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-27
START-UP CHECKLIST
. . . . . . . . . . . . . . . . . . . . . CL-1
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electrical com-
ponents. Only trained and qualified service personnel should
install, repair, or service air-conditioning equipment.
Untrained personnel can perform the basic maintenance
functions of cleaning coils and filters and replacing filters.
All other operations should be performed by trained service
personnel. When working on air-conditioning equipment, ob-
serve 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 unbrazing operations. Have fire ex-
tinguishers available for all brazing operations.
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury.
1. Improper installation, adjustment, alteration, serv-
ice, or maintenance can cause property damage, per-
sonal injury, or loss of life. Refer to the User’s In-
formation Manual provided with this unit for more
details.
2. Do not store or use gasoline or other flammable va-
pors and liquids in the vicinity of this or any other
appliance.
What to do if you smell gas:
1. DO NOT try to light any appliance.
2. DO NOT touch any electrical switch, or use any phone
in your building.
3. IMMEDIATELY call your gas supplier from a neigh-
bor’s phone. Follow the gas supplier’s instructions.
4. If you cannot reach your gas supplier, call the fire
department.
Disconnect gas piping from unit when pressure testing
at pressure greater than 0.5 psig. Pressures greater than
0.5 psig will cause gas valve damage resulting in haz-
ardous condition. If gas valve is subjected to pressure
greater than 0.5 psig, it must be replaced before use. When
pressure testing field-supplied gas piping at pressures of
0.5 psig or less, a unit connected to such piping must be
isolated by closing the manual gas valve(s).
INSTALLATION
Step 1 — Provide Unit Support
ROOF CURB — Assemble or install accessory roof curb in
accordance with instructions shipped with this accessory. See
Fig. 1 and 2. Install insulation, cant strips, roofing, and counter
flashing as shown. Ductwork can be installed to roof curb
before unit is set in place. Curb should be level. This is nec-
essary to permit unit drain to function properly. Unit level-
ing tolerance is ±
1
⁄
16
in. per linear ft in any direction. Refer
to Accessory Roof Curb Installation Instructions for addi-
tional information as required. When accessory roof curb is
used, unit may be installed on class A, B, or C roof covering
material.
IMPORTANT: The gasketing of the unit to the roof
curb is critical for a watertight seal. Install gasket with
the roof curb as shown in Fig. 1. Improperly applied
gasket can also result in air leaks and poor unit
performance.
Instructions continued on page 3.
48HJ015-025
Single Package Rooftop Units
Electric Cooling/Gas Heating
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
Tab
1a
PC 111
Catalog No. 534-807
Printed in U.S.A.
Form 48HJ-9SI
Pg 1
2-95
Replaces: 48HJ-5SI
"Loading the manual" means you need to wait until the file loads and becomes available for online reading. Some manuals are very large, and the time they take to appear depends on your internet speed.
Other Manuals for Carrier 48HJ015-025
Summary
ACCESSORY PACKAGE NO. CURB HEIGHT DESCRIPTION ‘‘A’’ ‘‘B’’ ‘‘C’’ 50PQ900221 1 8 -2 9 (305) Standard Curb — 14 9 High — — — 50PQ900141 2 8 -0 9 (610) Standard Curb for Units Requiring High Installation — — — 50PQ900151 2 8 -0 9 (610) Horizontal Supply and Return Curb 5 8 -6 9 (1676) 0 8 -2 1 ⁄ 2 9 (64...
ALTERNATE UNIT SUPPORT — When the curb cannotbe used, install unit on a noncombustible surface. Supportunit with sleepers, using unit curb support area. If sleeperscannot be used, support long sides of unit with a minimumof 3 equally spaced 4-in. x 4-in. pads on each side. Step 2 — Rig and Place Uni...
Table 1 — Physical Data UNIT SIZE 48 HJD015/HJE015 HJE017 HJD025 208/230, 460 V 575 V OPERATING WT (lb) Al/Al* 1640/1660 2010 2235 Unit Al/Cu* 1770/1790 2160 2385 Cu/Cu* 1840/1860 2250 2515 Economizer 110 110 110 Roof Curb† 200 200 200 COMPRESSOR 06D Semi-Hermetic Number 1 2 2 Cylinders 6 4 6 REFRIG...
