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48/50HJ004-014 specifications
Models:
48/50HJ004-014
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Troubleshooting
Install
Energy Recovery
on Power Up
Service
Connector
Page 9
Image 9
9
Fig. 5B — Base Unit Dimensions — COBRA™ Energy Recovery Unit —
48/50HJ008-014
with 62AQ200,300
Page 8
Page 10
Page 9
Image 9
Page 8
Page 10
Contents
SAFETY CONSIDERATIONS
CONTENTS
GENERAL
Installation, Start-Up and Service Supplement
INSTALLATION
Step 2 - Provide Unit Support
Fig. 1 - Shipping Packaging 48/50HJ004-006Shown
If electric control power or gas service is to be routed through the basepan, a field-installedaccessory thru-the-bottom connection must be used. Attach the accessory to the basepan per the information in the accessory installation instructions. Thru-the-bottomconnections must be installed before unit is set on roof
CONNECTOR
CONNECTOR
All panels must be in place when rigging
RIGHT
REAR
LEFT
SIDE
Page
Page
Page
Step 8 - Make Electrical Connections
Install field wiring as follows
control box. See Fig. 10. The raceway provides the UL required clearance between high- and low-voltagewiring
HEATER
17.9
HEATER
NOMINAL
40.7
20.9
47.9
NOMINAL
60.1
HEATER
68.0
68.0
NONE
208/230-1-60 575-3-60 SIZE 007 ONLY
Fig. 7 - Power Wiring Connections
208/230-3-60AND SIZES LEGEND
C- Contactor COMP - Compressor
Fig. 10 - Field Control Wiring Raceway 48HJ Shown
HOOD TOP
LIGHT COMMERCIAL THERMIDISTAT ACCESSORY
Step 3 - Install Light Commercial Thermidistat
on Power Up
Fig. 15 - Light Commercial Thermidistat Keypad
Fig. 16 - Light Commercial Thermidistat LCD
TO SELECT
OPERATIONAL INFORMATION
SERVICE
PRE-START-UP
START-UP
ENERGY RECOVERY
Fig. 17 - Unit Operation Flow Diagram
SECTION
ROOFTOP UNIT
OCCUPIED
UNOCCUPIED
TROUBLESHOOTING
Page
PremierLink
PWR - Power
Table 4 - Supply-AirDamper Troubleshooting
Table 3 - Heating and Cooling Troubleshooting
Copyright 2002 Carrier Corporation
Remove and Store in Job File
COMBINED ELECTRICAL COBRA ENERGY RECOVERY UNIT
I. PRELIMINARY INFORMATION
62AQ
IV. LIGHT COMMERCIAL THERMIDISTAT ACCESSORY
III. START-UPcont
AIRFLOWS 62AQ
