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APD
Reznor APD User Manual
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CONTROLS
NOTE:
Refer to the
TROUBLESHOOTING
section for probable causes and reset instructions for
the following controls.
Locations for the following controls are shown in
Figure 27
.
36
UEZ-IOM (07-23) 1034347-I
VENTER
MOTOR
COMBINATION
GAS VALVE
HIGH TEMPERATURE LIMIT CONTROL
VENT TEMPERATURE
LIMIT SWITCH
PRESSURE SWITCH
FLAME
SENSOR
FAN
MOTOR
IGNITOR
INTERLOCK
DOOR
SWITCH
DISCONNECT
SWITCH
TRANSFORMER
DSI CONTROL MODULE
UNIT SIZES 130–310
UNIT SIZES 055–110
PRESSURE SWITCH
TRANSFORMER
DSI CONTROL MODULE
FLAME SENSOR
FLAME ROLLOUT SWITCH
IGNITOR
DISCONNECT SWITCH
FAN MOTOR
HIGH TEMPERATURE
LIMIT CONTROL
COMBINATION GAS VALVE
VENT TEMPERATURE
LIMIT SWITCH
VENTER MOTOR
INTERLOCK DOOR SWITCH
Figure 27.
Component Locations
35
37
Table of Contents
Table of Contents
2
General Information
4
References
4
Important Safety Information
4
Certification
5
Warranty
5
Installation Codes
5
Heater Location
5
Heater Throw
6
Mounting Height Requirements
7
Hazards of Chlorine
7
Clearances
7
Weights
7
Condensate Drain Requirements
7
Dimensions
8
Venting and Combustion Air Requirements
10
Vent/Combustion Air System Piping Requirements
10
Vent/Combustion Air Piping Requirements (Unit Sizes 055-110)
10
Vent/Combustion Air Piping Requirements (Unit Sizes 130-310)
11
Vent/Combustion Air System Piping Joints
13
Vent/Combustion Piping Joints (Unit Sizes 055-110)
13
Vent/Combustion Piping Joints (Unit Sizes 130-310)
13
Vent/Combustion Air System Piping Support
14
Vent/Combustion Piping Support (Unit Sizes 055-110)
14
Vent/Combustion Piping Support (Unit Sizes 130-310)
14
Installation
15
Unpacking and Inspection
15
Pre-Installation Checklist
15
Heater Suspension
16
Suspension of Heater Using Option CK8 or CK10 Hanger Kit
16
Heater Suspension Using Field-Supplied Threaded Rods
17
Suspension of Heater with Downturn Nozzle
17
Piping Connections
17
Gas Supply Pressure
17
Gas Supply Piping
18
Supply Piping Connections
19
Vent Connections
19
Concentric Adapter Box Connections
20
Vent Terminal Options
22
Vertical Vent Terminal (Option CC2) Installation
22
Horizontal Vent Terminal (Option CC6) Installation
26
Condensate Drain Installation
31
Vent Condensate Drain Installation (Unit Sizes 055-110)
32
Vent Condensate Drain Installation (Unit Sizes 130-310)
33
Heat Exchanger Condensate Drain Installation
34
Electrical Connections
34
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
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Reznor APD Specifications
General
Brand
Reznor
Model
APD
Category
Gas Heater
Language
English
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