Reznor APD User Manual

3
UEZ-IOM (07-23) 1034347-I
TABLE OF CONTENTS—CONTINUED
CONTROLS .............................................................................. 36
Thermostat Options....................................................................... 37
Combination Gas Valve.................................................................... 37
Pressure Switch ......................................................................... 37
High Temperature Limit Control ............................................................. 38
Vent Temperature Limit Switch .............................................................. 38
Interlock Door Switch ..................................................................... 38
Fan Motor .............................................................................. 38
Circuit Board (DSI Control Module)........................................................... 38
Venter Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Flame Rollout Switch (Unit Sizes 055–110) .................................................... 39
OPERATION ............................................................................. 39
Pre-Startup Checklist ..................................................................... 40
Startup................................................................................. 40
Operating Sequences . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Vent System Testing ...................................................................... 44
Post-Startup Checklist..................................................................... 45
ADJUSTMENTS........................................................................... 45
Pressure Switch Replacement .............................................................. 45
Measure and Adjust Manifold (Outlet) Gas Pressure ............................................. 46
Measure and Adjust Manifold Gas Pressure—Elevation ≤2,000 Feet (≤610 Meters) .................. 47
Measure and Adjust Manifold Gas Pressure—Elevation >2,000 Feet (>610 Meters) .................. 48
Converting Unit from Natural Gas to Propane................................................... 49
MAINTENANCE........................................................................... 50
Service Checklist......................................................................... 50
Maintenance Procedures .................................................................. 50
Burner Maintenance (Unit Sizes 055–110) .................................................. 50
Burner Maintenance (Unit Sizes 130–310) .................................................. 52
Burner Orifice Maintenance .............................................................. 54
Heat Exchanger Maintenance ............................................................ 54
Ignition System Maintenance ............................................................. 54
Maintenance of Fan Motor, Fan Blades, and Fan Guard ........................................ 55
Venter Motor and Wheel Assembly Maintenance ............................................. 56
Combination Gas Valve Maintenance ...................................................... 56
Pressure Switch Maintenance ............................................................ 57
High Temperature Limit Control Maintenance ................................................ 57
Interlock Door Switch Maintenance ........................................................ 57
Transformer Maintenance ............................................................... 57
Vent Temperature Limit Switch Maintenance................................................. 58
Disconnect Switch Replacement .......................................................... 58
Flame Rollout Switch Maintenance (Unit Sizes 055–110) ....................................... 58
Vent or Vent/Combustion Air System Maintenance ............................................ 58
Condensate Drain System ............................................................... 58
TROUBLESHOOTING...................................................................... 59
General Troubleshooting................................................................... 59
Unit Troubleshooting Using DSI Control Module................................................. 60
INSTALLATION RECORD (TO BE COMPLETED BY INSTALLER) .................................. 64

Reznor APD Specifications

General

Brand	Reznor
Model	APD
Category	Gas Heater
Language	English