Carrier 50HS018 Dimensions and installation guide

Installation, Start-Up and
Service Instructions
CONTENTS Page
SAFETY CONSIDERATIONS .................1-6
General ......................................1
RECEIVING AND INSTALLATION ............7-17
Step 1 — Check Equipment ...................7
• IDENTIFY UNIT
• INSPECT SHIPMENT
Step 2 — Provide Unit Support ...............7
• ROOF CURB
• SLAB MOUNT
Step 3 — Provide Clearances .................7
Step 4 — Rig and Place Unit ..................8
• UNITS WITHOUT BASE RAILS
• UNITS WITH OPTIONAL BASE RAILS
Step 5 — Select and Install Ductwork ........10
• CONVERTING HORIZONTAL DISCHARGE
UNITS TO DOWNFLOW (VERTICAL)
DISCHARGE
• ACCESSORY DUCT FLANGE KIT
INSTALLATION
Step 6 — Provide for Condensate Disposal ...14
Step 7 — Install Electrical Connections ......14
• HIGH-VOLTAGE CONNECTIONS
• ROUTING POWER LEADS INTO UNIT
• CONNECTING GROUND LEAD TO
GROUND LUG
• ROUTING CONTROL POWER WIRES (24 v)
• SPECIAL PROCEDURES FOR 208-V
OPERATION
PRE-START-UP .............................17
START-UP ................................18-27
Check for Refrigerant Leaks .................18
Unit Start-Up Adjustments ...................18
MAINTENANCE ............................28-31
Air Filter ....................................28
Unit Top Removal ...........................28
Indoor Blower and Motor ....................28
Outdoor Coil, Indoor Coil, and Condensate
Drain Pan .................................29
Outdoor Fan ................................29
Electrical Controls and Wiring ...............29
Refrigerant Circuit ..........................29
Indoor Airflow ..............................30
Metering Devices ...........................30
Liquid Line Strainers ........................30
START-UP CHECKLIST .....................CL-1
NOTE TO INSTALLER — Before the installation, READ
THESE INSTRUCTIONS CAREFULLY AND COM-
PLETELY. Also, make sure the Owner’s Manual and Serv-
ice Instructions are left with the unit after installation.
SAFETY CONSIDERATIONS
Installation and servicing of air-conditioning equipment
can be hazardous due to system pressure and electrical com-
ponents. Only trained and qualified personnel should install,
repair, or service air-conditioning equipment.
Untrained personnel can perform basic maintenance func-
tions of cleaning coils and 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 unbrazing operations. Have fire ex-
tinguisher available for all brazing operations.
Before performing service or maintenance operations on
system, turn off main power to unit. Turn off accessory
heater power switch if applicable. Electrical shock can
cause personal injury.
General — 50HS heat pumps are fully self-contained and
designed for outdoor installation. See Fig. 1. As shown in
Fig. 2-5, all units are shipped in a horizontal-discharge con-
figuration for installation on a ground-level slab. All units
can be converted to downflow (vertical) discharge configu-
rations for rooftop applications. See Fig. 6 for roof curb
dimensions.
Fig. 1 — Model 50HS
50HS018-060
Single-Package Heat Pump Units
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1 4
Tab 5a 5a PC 111 Catalog No. 565-041 Printed in U.S.A. Form 50HS-9SI Pg 1 2-97 Replaces: 50HS-8SI

UNIT ELECTRICAL
CHARACTERISTICS UNIT WT CORNER WT (Lb/Kg) UNIT HEIGHT (in./mm) DIMENSION (in./mm)
LbKgABCD E F
50HS018 208/230-1-60 233 106 66/30 45/20 95/43 42/19 24.1/613 18.2/462
50HS024 208/230-1-60 256 117 68/31 46/21 97/44 45/20 24.1/613 18.2/462
50HS030 208/230-1-60, 208/230-3-60 268 122 66/30 58/26 91/41 53/24 24.1/613 18.2/462
50HS036 208/230-1-60, 208/230-3-60, 460-3-60 288 131 71/32 63/29 96/44 58/26 28.1/714 22.2/563
50HS042 208/230-1-60, 208/230-3-60, 460-3-60 295 134 73/33 65/30 97/44 60/27 28.1/714 22.2/563
UNIT CENTER OF GRAVITY (in./mm)
XYZ
50HS018 20.7/525 19.2/487 10.6/270
50HS024 20.4/517 19.3/491 10.6/270
50HS030 20.3/515 20.1/510 10.6/270
50HS036 20.1/511 20.2/513 12.4/314
50HS042 20.0/509 20.3/516 12.4/314
REQ’D CLEARANCES FOR SERVICING — in. (mm)
Indoor Coil Access Side .................30(762)
Control Box Access Side ................30(762)
(Except for NEC requirements)
Unit Top .........................36(914)
Side Opposite Ducts ..................30(762)
REQ’D CLEARANCES TO COMBUSTIBLE MAT’L — in. (mm)
Unit Top .............................0
Duct Side of Unit ........................0
Side Opposite Ducts ......................0
Bottom of Unit .........................0
Vertical Discharge, First 12 in. (305) of Supply Duct . . . 1 (25)
NEC REQ’D CLEARANCES — in. (mm)
Between Units, Control Box Side ...........42(1067)
Unit and Ungrounded Surfaces, Control Box Side . . . .36 (914)
Unit and Block or Concrete Walls and Other
Grounded Surfaces, Control Box Side ........42(1067)
LEGEND
CG — Center of Gravity
MAT’L — Material
NEC — National Electrical Code
REQ’D — Required
NOTE: Clearances must be maintained to prevent recirculation of
air from outdoor-fan discharge.
Fig. 2 — Dimensions; Sizes 018-042; Without Base Rail
2

UNIT ELECTRICAL
CHARACTERISTICS UNIT WT CORNER WT (Lb/Kg) UNIT HEIGHT (in./mm) DIMENSION (in./mm)
Lb Kg A B C D E F
50HS018 208/230-1-60 268 122 70/32 50/23 100/45 48/22 27.43/697 21.50/546
50HS024 208/230-1-60 276 125 73/33 51/23 102/46 50/23 27.43/697 21.50/546
50HS030 208/230-1-60, 208/230-3-60 288 131 71/32 63/29 96/44 58/26 27.43/697 21.50/546
50HS036 208/230-1-60, 208/230-3-60, 460-3-60 308 140 76/35 68/31 101/46 63/29 31.43/798 25.50/648
50HS042 208/230-1-60, 208/230-3-60, 460-3-60 315 143 78/35 70/32 102/46 65/30 31.43/798 25.50/648
UNIT CENTER OF GRAVITY (in./mm)
XYZ
50HS018 20.4/518 19.4/493 12.9/329
50HS024 20.2/513 19.5/495 12.9/329
50HS030 20.1/511 20.2/513 12.9/329
50HS036 20.0/508 20.3/515 14.7/373
50HS042 19.9/506 20.4/518 14.7/373
REQ’D CLEARANCES FOR SERVICING — in. (mm)
Indoor Coil Access Side .................30(762)
Control Box Access Side ................30(762)
(Except for NEC requirements)
Unit Top .........................36(914)
Side Opposite Ducts ..................30(762)
REQ’D CLEARANCES TO COMBUSTIBLE MAT’L — in. (mm)
Unit Top .............................0
Duct Side of Unit ........................0
Side Opposite Ducts ......................0
Bottom of Unit .........................0
Vertical Discharge, First 12 in. (305) of Supply Duct . . . 1 (25)
NEC REQ’D CLEARANCES — in. (mm)
Between Units, Control Box Side ...........42(1067)
Unit and Ungrounded Surfaces, Control Box Side . . . .36 (914)
Unit and Block or Concrete Walls and Other
Grounded Surfaces, Control Box Side ........42(1067)
LEGEND
CG — Center of Gravity
MAT’L — Material
NEC — National Electrical Code
REQ’D — Required
NOTE: Clearances must be maintained to prevent recirculation of
air from outdoor-fan discharge.
Fig. 3 — Dimensions; Sizes 018-042; With Optional Base Rail
3

UNIT ELECTRICAL
CHARACTERISTICS UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D
50HS048 208/230-1-60, 208/230-3-60, 460-3-60 359 163 89/40 81/37 113/51 76/35
50HS060 208/230-1-60, 208/230-3-60, 460-3-60 373 170 92/42 85/39 116/53 80/36
UNIT CENTER OF GRAVITY (in./mm)
XYZ
50HS048 19.7/500 20.5/522 15.0/381
50HS060 19.7/499 20.6/523 15.0/381
REQ’D CLEARANCES FOR SERVICING — in. (mm)
Indoor Coil Access Side .................30(762)
Control Box Access Side ................30(762)
(Except for NEC requirements)
Unit Top .........................36(914)
Side Opposite Ducts ..................30(762)
REQ’D CLEARANCES TO COMBUSTIBLE MAT’L — in. (mm)
Unit Top .............................0
Duct Side of Unit ........................0
Side Opposite Ducts ......................0
Bottom of Unit .........................0
Vertical Discharge, First 12 in. (305) of Supply Duct . . . 1 (25)
NEC REQ’D CLEARANCES — in. (mm)
Between Units, Control Box Side ...........42(1067)
Unit and Ungrounded Surfaces, Control Box Side . . . .36 (914)
Unit and Block or Concrete Walls and Other
Grounded Surfaces, Control Box Side ........42(1067)
LEGEND
CG — Center of Gravity
MAT’L — Material
NEC — National Electrical Code
REQ’D — Required
NOTE: Clearances must be maintained to prevent
recirculation of air from outdoor-fan discharge.
Fig. 4 — Dimensions; Sizes 048,060; Without Base Rail
4

UNIT ELECTRICAL
CHARACTERISTICS UNIT WT CORNER WT (Lb/Kg)
Lb Kg A B C D
50HS048 208/230-1-60, 208/230-3-60, 460-3-60 379 172 94/43 86/39 118/54 81/37
50HS060 208/230-1-60, 208/230-3-60, 460-3-60 393 179 97/44 90/41 121/55 85/39
UNIT CENTER OF GRAVITY (in./mm)
XYZ
50HS048 19.6/498 20.6/524 17.3/440
50HS060 19.6/497 20.6/524 17.3/440
REQ’D CLEARANCES FOR SERVICING — in. (mm)
Indoor Coil Access Side .................30(762)
Control Box Access Side ................30(762)
(Except for NEC requirements)
Unit Top .........................36(914)
Side Opposite Ducts ..................30(762)
REQ’D CLEARANCES TO COMBUSTIBLE MAT’L — in. (mm)
Unit Top .............................0
Duct Side of Unit ........................0
Side Opposite Ducts ......................0
Bottom of Unit .........................0
Vertical Discharge, First 12 in. (305) of Supply Duct . . . 1 (25)
NEC REQ’D CLEARANCES — in. (mm)
Between Units, Control Box Side ...........42(1067)
Unit and Ungrounded Surfaces, Control Box Side . . . .36 (914)
Unit and Block or Concrete Walls and Other
Grounded Surfaces, Control Box Side ........42(1067)
LEGEND
CG — Center of Gravity
MAT’L — Material
NEC — National Electrical Code
REQ’D — Required
Fig. 5 — Dimensions; Sizes 048,060; With Optional Base Rail
NOTE: Clearances must be maintained to prevent
recirculation of air from outdoor-fan discharge.
5