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TABLE OF CONTENTS
SECTION 1: Heater Safety...................................................... 2
SECTION 2: Installer Responsibility ..................................... 2
2.1 Clearances to Combustibles ........................................ 2
2.2 Corrosive Chemicals.................................................... 2
2.3 National Standards and Applicable Codes .................. 2
SECTION 3: Critical Considerations...................................... 3
3.1 Basic Information ......................................................... 3
3.2 Location and Suspension ............................................ 3
3.3 Minimum Required Installation Clearances ................. 3
3.4 Clearances to Combustibles ........................................ 3
3.5 Ventilation .................................................................... 3
3.6 Gas Supply .................................................................. 3
3.7 Electrical Supply .......................................................... 3
3.8 Flue.............................................................................. 3
3.9 Coil Condense Drain.................................................... 3
SECTION 4: Specifications .................................................... 5
4.1 DAT (all models) .......................................................... 5
4.2 General Technical Data Table (all models) .................. 6
4.3 Technical Data Table - Heater Section (all models) ..... 7
4.4 DualAir
®
Performance Data -
Graph of Air Flows v Static Pressure ........................... 8
SECTION 5: Heater Installation.............................................. 9
5.1 General ........................................................................ 9
5.2 Handling ...................................................................... 9
5.3 Shelf Mounting and Suspension .................................. 9
SECTION 6: Flue Installation ............................................... 10
6.1 Flue Installation.......................................................... 10
6.2 Type C
12
, C
32
& C
62
Appliance..................................... 10
6.3 Type B
22
Appliance..................................................... 10
6.4 Converting from Top to Side Terminations
for Flue and Air Intake. .............................................. 10
SECTION 7: Air Supply......................................................... 13
7.1 Room Sealed Installation ........................................... 13
7.2 Open Flued Installation .............................................. 13
7.3 Building Ventilation ..................................................... 13
7.4 Isolated Equipment Rooms ........................................ 13
SECTION 8: Optional Heater Configurations...................... 14
8.1 Distribution Duct ........................................................ 14
SECTION 9: Gas Piping ........................................................ 15
9.1 Connections............................................................... 15
SECTION 10: Wiring and Electrical Information ................. 16
10.1 Electrical Supply ...................................................... 16
10.2 Remote Control ........................................................ 16
10.3 DAT Main Circuit Board Terminal Identification ........ 17
10.4 DAT Wiring Diagram Models 75-115 ........................ 18
10.5 DAT Wiring Diagram Models 75-115 ........................ 19
10.6 DAT Site Connections at Main Circuit Board............ 20
SECTION 11: Commissioning .............................................. 21
11.1 Pre Commission Checks........................................... 21
11.2 Gas Supply ............................................................... 21
11.3 Mechanical Checks................................................... 21
11.4 Begin Commissioning ............................................... 21
11.5 Combustion Testing (all models)............................... 23
11.6 Turning Off the DualAir
®
Unit..................................... 24
11.7 External Controls ...................................................... 24
11.8 Complete the Commissioning ................................... 24
11.9 Instruction to the User .............................................. 24
SECTION 12: User Instructions............................................25
12.1 User Instructions ......................................................25
12.2 Heater Operation......................................................25
12.3 Common User Controls (all models) ........................25
12.4 Cooling Section Operation .......................................26
12.5 Heating Section Lighting Instructions.......................26
12.6 Simple Fault Finding (all models) .............................26
SECTION 13: Servicing .........................................................27
13.1 Servicing Instructions...............................................27
13.2 Burner Maintenance.................................................27
13.3 Fan/Motor Assembly Maintenance ...........................27
13.4 Heat Exchanger Maintenance ..................................27
13.5 Gas Control Valve Maintenance (all models) ...........28
13.6 Flue Fan ...................................................................28
SECTION 14: Conversion Between Gases ..........................29
14.1 General ....................................................................29
14.2 Burner Conversion ...................................................29
14.3 Gas Valves ...............................................................29
SECTION 15: Troubleshooting .............................................30
15.1 General ....................................................................30
15.2 Troubleshooting For Automatic Ignition
Burner Systems .......................................................31
15.3 Troubleshooting for Flame Supervision System .......32
15.4 Troubleshooting for Solenoid Valves ........................33
15.5 Troubleshooting for Main Fan ...................................33
15.6 Troubleshooting for Fan Contactor ...........................34
SECTION 16: Removal and Replacement Parts..................35
16.1 Gas Valve .................................................................35
16.2 Burner Compartment ...............................................36
16.3 Ignition Electrode and Flame Probe. ........................37
16.4 Flue Fan ...................................................................38
16.5 Heater Pressure Switch ............................................39
16.6 Cooling Coil Safety Devices .....................................40
16.7 Ignition Control .........................................................41
16.8 Fan Motor Removal ..................................................41
16.9 Combination Fan/Limit Thermostat ..........................42
