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installation instructions 677C--A36-60Unit Dimensions, 677C-- --A, A09147
Models:
677C--A
1
4
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Troubleshooting
Install
Dimension
Maintenance
Configuring Units for Downflow Vertical Discharge
Electrical Controls and Wiring
Symptom
Burner Assembly
Special Procedures for 208-VOperation
Start-upHeating and Make Adjust- ments
Page 4
Image 4
677C--
--
A
A09147
Fig. 3 -
677C--A36-60
Unit Dimensions
4
Page 3
Page 5
Page 4
Image 4
Page 3
Page 5
Contents
TABLE OF CONTENTS
SAFETY CONSIDERATIONS
Fig. 1 - Unit 677C--A
Installation Instructions
RECEIVING AND INSTALLATION
INTRODUCTION
Step 1 - Check Equipment
Step 2 - Provide Unit Support
677C-- --A
Fig. 2 - 677C--A24-30Unit Dimensions
A09146
677C-- --A
Fig. 3 - 677C--A36-60Unit Dimensions
A09147
Fig. 4 - Roof Curb Dimensions
677C
SMALL CURB
ROOF CURB DETAIL
ACCESS PANELS MUST BE IN PLACE WHEN RIGGING
Step 5 - Rig and Place Unit
Inspection
Rigging/Lifting of Unit See Fig
Step 7 - Install Flue Hood
Step 8 - Install Gas Piping
Step 6 - Connect Condensate Drain
Fig. 6 - Condensate Trap
Step 9 - Install Duct Connections
Configuring Units for Downflow Vertical Discharge
Fig. 7 - Sediment Trap
FIRE OR EXPLOSION HAZARD
Fig. 8 - Supply and Return Duct Opening
677C-- --A
Horizontal Duct Covers
Table 1 - Physical Data - Unit 677C
Table 1 - Physical Data - Unit 677C--ACont’d
Table 2 - Maximum Gas Flow Capacity
Table 3 - Heating Inputs
677C-- --A
Step 10 - Install Electrical Connections
Special Procedures for 208-VOperation
High-VoltageConnections
Control Voltage Connections
Balance Point Setting-Thermidistator Hybrid
PRE-START-UP
Transformer Protection
Thermostat
Step 3 - Start-upHeating and Make Adjust- ments
START-UP
Step 1 - Check for Refrigerant Leaks
Step 2 - Unit Sequence of Operation
Adjust Gas Input
Fig. 11 - Burner Assembly
Check Heating Control
Check Gas Input
Airflow and Temperature Rise
Limit Switches
Check Burner Flame
Normal Operation
Step 4 - Start-upCooling and Make Adjust- ments
Rollout Switch
Checking and Adjusting Refrigerant Charge
Indoor Airflow and Airflow Adjustments
Gas Heating Fan Speed Set-up
Continuous Fan Operation
Table 6 - Color Coding for Indoor Fan Motor Leads
677C-- --A
Fig. 14 - Interface Fan Board IFB
Table 8 - 677C--AWet Coil Pressure Drop
677C-- --A
Table 7 - Filter Pressure Drop Table IN. W.C
677C-- --A
UNIT
677C-- --A
Heating
677C-- --A
1295
677C-- --A
1445
677C-- --A
1448
677C A
A09068
677C-- --A
A09209
Fig. 17 - Cooling Charging Table-Subcooling
677C-- --A
50VT500173 REV
A09099
MAINTENANCE
Cleaning the Blower Motor and Wheel
Air Filter
Indoor Blower and Motor
Limit Switch
Induced Draft combustion air Blower Assembly
Fig. 18 - Blower Housing and Flue Collector Box
Fig. 19 - Unit Access Panels
Electrical Controls and Wiring
Outdoor Fan
Refrigerant Circuit
Fig. 20 - Removal of Motor and Blower Wheel
Page
High-PressureSwitch
Copeland Scroll Compressor Puron Refrigerant
EXPLOSION HAZARD
Fig. 24 - Refrigerant Circuit
UNIT OPERATION AND SAFETY HAZARD
Refrigerant System
Compressor Oil
677C-- --A
TROUBLESHOOTING
START-UPCHECKLIST
Synthetic Roof Precautionary Procedure
Liquid Line Filter Drier
SYMPTOM
677C-- --A
Table 13 - Troubleshooting Guide-LEDStatus Codes
Table 12 - Troubleshooting Guide-Heating
677C-- --A
TEMPERATURES
Remove and Store in Job Files
I. PRELIMINARY INFORMATION MODEL NO
PRESSURES