Carrier 50JZ-A- User Manual
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Table of Contents:
- Page 2 – INTRODUCTION; Step 1 — Check Equipment; Identify Unit; Step 2 — Provide Unit Support; Roof Curb; CAUTION; Slab Mount; Step 3 — Provide Clearances
- Page 5 – LARGE CURB; SMALL OR LARGE BASE UNIT
- Page 6 – DETAIL A; Step 4 — Rig and Place Unit; Inspection; UNIT FALLING HAZARD; PROPERTY DAMAGE HAZARD; WARNING; Step 5 — Select and Install Ductwork
- Page 7 – PERSONAL INJURY HAZARD; IMPORTANT; CONFIGURING UNITS FOR DOWNFLOW; ELECTRICAL SHOCK HAZARD; NOTE
- Page 8 – building structure in accordance with local codes and good; Step 6 — Provide for Condensate Disposal; overflowing. Connect a drain tube using a minimum of
- Page 10 – Step 7 — Install Electrical Connections; UNIT COMPONENT DAMAGE HAZARD; Control Voltage Connections; Standard Connections
- Page 11 – SIZE
- Page 13 – FLASHING; ON; ELECTRICAL; Checking Cooling and Heating Control Operation; Step 1 — Check for Refrigerant Leaks
- Page 14 – Checking and Adjusting Refrigerant Charge
- Page 15 – Indoor Airflow and Airflow Adjustments; UNIT OPERATION HAZARD; Table 3 – Color Coding for Indoor Fan Motor Leads
- Page 16 – Table 4 – Wet Coil Air Delivery
- Page 17 – Step 3 — Defrost Control; Quiet Shift; MAINTENANCE
- Page 18 – Step 1 — Air Filter; Indoor Blower and Motor
- Page 20 – Step 11 — Copeland Scroll Compressor (Puron; Step 12 — Refrigerant System; Step 13 — System Information
- Page 21 – TROUBLESHOOTING; PURON
- Page 22 – Table 7 – Troubleshooting Chart
1
50JZ --- A
Single Packaged Heat Pump System
with Puron (R --- 410A) Refrigerant
50 Hz, CE Nominal 7 --- 14 kW (Sizes 24 --- 48)
Installation Instructions
NOTE
:
Read the entire instruction manual before starting the
installation.
NOTE
:
Installer: Make sure the Owner’s Manual and Service
Instructions are left with the unit after installation.
TABLE OF CONTENTS
PAGE
SAFETY CONSIDERATIONS
1
. . . . . . . . . . . . . . . . . . . . . . . . .
INTRODUCTION
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RECEIVING AND INSTALLATION
2--9
. . . . . . . . . . . . . . . . . .
Check Equipment
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Identify Unit
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspect Shipment
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Unit Support
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Roof Curb
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Slab Mount
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Provide Clearances
2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rig and Place Unit
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inspection
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rigging/Lifting of Unit
6
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Select and Install Ductwork
6
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Converting Horizontal Discharge Units to Downflow
(Vertical) Discharge Units
7
. . . . . . . . . . . . . . . . . . . . . . . . . .
Provide for Condensate Disposal
8
. . . . . . . . . . . . . . . . . . . . . .
Install Electrical Connections
10
. . . . . . . . . . . . . . . . . . . . . . . .
High--Voltage Connections
10
. . . . . . . . . . . . . . . . . . . . . . . .
Control Voltage Connections
10
. . . . . . . . . . . . . . . . . . . . . . .
Standard Connections
10
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transformer Protection
10
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Accessory Electric Heaters Installation
11
. . . . . . . . . . . . . . .
Sequence of Operation
11
. . . . . . . . . . . . . . . . . . . . . . . . . . .
PRE--START--UP
13
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP
13--16
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking Cooling & Heating Control Operation
13
. . . . . . . .
Check for Refrigerant Leaks
13
. . . . . . . . . . . . . . . . . . . . . . . . .
Start--Up Adjustments
14
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Checking & Adjusting Refrigerant Charge
14
. . . . . . . . . . . .
Indoor Airflow & Airflow Adjustments
15
. . . . . . . . . . . . . .
Defrost Control
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Quiet Shift
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Defrost
17
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
MAINTENANCE
17--20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Air Filter
18
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Blower and Motor
18
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Outdoor Coil, Indoor Coil, & Condensate Drain Pan
19
. . . . . .
Outdoor Fan
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Controls and Wiring
19
. . . . . . . . . . . . . . . . . . . . . . .
Refrigerant Circuit
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Indoor Airflow
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Metering Devices-- Piston
19
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Pressure Switches
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Charge Switch
19
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
High Pressure Switch
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Copeland Scroll compressor (Puron Refrigerant)
20
. . . . . . . . .
A09042
Fig. 1 -- Unit 50JZ--A
Refrigerant System
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Refrigerant
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Compressor Oil
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Servicing Systems on Roofs with Synthetic Materials
20
. . . .
Liquid Line Filter Drier
20
. . . . . . . . . . . . . . . . . . . . . . . . . . .
Puron
R
(R--410A) Refrigerant Charging
20
. . . . . . . . . . . . .
System Information
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss of Charge Switch
20
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Check Defrost Thermostat
20
. . . . . . . . . . . . . . . . . . . . . . . . .
TROUBLESHOOTING
21
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
START--UP CHECKLIST
21
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
SAFETY CONSIDERATIONS
Installation and servicing of this equipment can be hazardous due
to mechanical and electrical components. Only trained and
qualified personnel should install, repair, or service this equipment.
Untrained personnel can perform basic maintenance functions such
as cleaning and replacing air filters. All other operations must be
performed by trained service personnel. When working on this
equipment, observe precautions in the literature, on tags, and on
labels attached to or shipped with the unit and other safety
precautions that may apply.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have a fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes, the
current editions of the National Electrical Code (NEC) NFPA 70.
In Canada refer to the current editions of the Canadian Electrical
Code CSA C22.1.
Recognize safety information. This is the safety--alert symbol
.
When you see this symbol on the unit and in instructions or manu-
als, be alert to the potential for personal injury. Understand these
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