McQuay SuperMod IM-685-1 Gas Furnace Manuals

Manuals and User Guides for McQuay SuperMod IM-685-1 Gas Furnace. We have 1 McQuay SuperMod IM-685-1 Gas Furnace manual available for free PDF download: Installation And Maintenance Manual

McQuay SuperMod IM-685-1 Installation And Maintenance Manual

McQuay SuperMod IM-685-1 Installation And Maintenance Manual (28 pages)

Forced Draft Gas Fired Furnace HT***A* with RM7895A Flame Safeguard

Brand: McQuay | Category: Furnace | Size: 0 MB

Table of Contents

Table of Contents
2
General

3
Installation General

3
Start-Up & Operating Procedures

8
References

10
- Combustion Tests
  10
- Cycle the Unit
  10
- Record Data
  10
- Typical Electrical Schematic
  10
- Typical Sequence of Operation
  11
- Typical Piping Schematic
  11
- Typical Burner Control Box
  12
Flame Safeguard

12
- Keyboard Display Module
  12
- Operation
  12
- Normal Start-Up
  12
- LED Display
  12
Service

13
- General
  13
- Gun Assembly
  13
- Gun Assembly Removal and Installation
  13
- Flame Rod Adjustment
  13
- Flame Rod Installation
  13
- Ignition Electrode Adjustment
  13
- Air & Gas Adjustments
  14
- Gas Supply Pressure
  14
- High Pressure Regulator
  14
- Gas Adjustment
  14
- Air Adjustment
  14
- Air and Gas Control Linkage
  14
- Actuator Crankarm
  15
- Switch Adjustments
  15
- Altitude Considerations
  15
- Gas Valve Pressure Regulator Adjustment
  16
- Adjustment Procedure for Parallel Valves
  16
- Check Manifold Pressure at Minimum Rate
  16
- Combustion Testing
  17
- Verify Input Rate
  17
- Check CO
  17
- Cleaning Heat Exchanger (Models 032-200)
  17
- Cleaning Heat Exchanger (Models 020-025)
  18
- Leakage Symptoms
  18
- Checking for Leaks
  18
- Causes of Failures
  18
- Replacing a Heat Exchanger
  19
- Furnace Condensation
  19
- Rear Cleanout Port
  20
- Furnace Condensate Drain Kit
  20
- Combination Fan and Limit Control
  20
Maintenance

21
Capacities & Adjustments Table

25
Performance & Service History

26

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