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© 2005
All rights reserved. No part of this work covered by the copyrights herein may be reproduced
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written permission of Roberts-Gordon.
Printed in U.K.
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