© 201
7 Combat HVAC Limited
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the written permission of Combat HVAC Limited.
Printed in U.K.
TABLE OF CONTENTS
SECTION 1: Heater Safety ...................................................... 2
1.1 Manpower Req
uirements ............................................. 2
1.2 Safety Labels and Their Placement ............................. 2
SECTION 2: Installer Responsibility ..................................... 4
2.1 Laminated Wall Plate ................................................... 4
2.2 Corrosive Chem
icals
.................................................... 4
2.3 National Standards and Applicable Regulations..........
4
SECTION 3: Clearances to Combustibles............................. 5
3.1 Required Clearances to Comb
ustibles......................... 5
SECTION 4: Critical Considerations ..................................... 7
4.1 Ventilation .................................................................... 7
4.2 Gas Supply
..............................
.................................... 7
4.3 Electrical Supply ......................
.................................... 7
4.4 Flue.............................................................................. 7
SECTION 5: Specif
ications .................................................... 8
5.1 CTUA .......................................................................... 8
5.2 CTUB, CTUC and CTUD ............................................. 9
5.3 General Technical Data Table ................................... 10
5.4 Technical Data Table .................................................. 11
SECTION 6: Heater Installation............................................ 12
6.1 General ...................................................................... 12
6.2 Basic Information....................................................... 12
6.3 Location and Suspension
.......................................... 12
6.4 Handling .................................................................... 12
6.5 Suspension and Shelf Mounting................................
12
SECTION 7: Flue Installation ............................................... 14
7. 1 F l ue Installation ........................
.................................. 14
7.2 Type C
12
, C
32
& C
62
Appliance..................................... 14
7.3 Type B
22
Appliance ..................................................... 14
SECTION 8: Air Supply
......................................................... 16
8.1 Room Sealed Installation ........................................... 16
8.2 Open Flued Installation
.............................................. 16
8.3 Building Ventilation
.................................................... 16
8.4 Isolated Equipment Rooms........................................
16
SECTION 9: Optional Heater Configurations......................
17
9.1 Distribution Duct Work for CTUB
, CTUC and CTUD
Heaters ...................................................................... 17
SECTION 10: Gas Pipe Work ................................................ 18
10.1 Connections ............................................................. 18
SECTION 11: Wiring and Electrical Inf
ormation
................. 20
11.1 Electrical Supply
....................................................... 20
11.2 Remote Controls ....................................................... 20
11.3 CTUA Wiring Diagram (Models 75-115).................... 21
11.4 CTUB/C Wiring Diagram (Models 75-115) ................ 22
11.5 CTUD Wiring Diagram (Models 75-115) ................... 23
11.6 CTUD External Motor Alternative Wir
ing & Optional
Thermostat/T
ime Switch..........
.................................. 24
SECTION 12: Commissioning ..............................................
25
12.1 Pre-Commission Checks.......................................... 25
12.2 Gas Supply ............................
.................................. 25
12.3 Mechanical Checks .................................................. 25
12.4 Begin Commissioning .............................................. 26
12.5 Combustion Testing
..................................................27
12.6 Turning Off the Heater..............................................27
1
2.7 External Controls......................................................28
12.8 Complete the Commissioning ..................................28
12.9 Instruc
tion to the User
..............................................28
SECTION 13: User Instructions............................................29
13.1 User Instructions ......................................................
29
13.2 Heater Operation......................................................29
13.3 Common User Controls............................................30
13.4 Lighting Instructions
.................................................
30
13.5 Simple Fault Finding.................................................30
SECTION 1
4: Servicing.........................................................31
1
4.1 Servicing Instructions...............................................
31
14.2 Burner Maintenance.................................................31
1
4.3 Fan/Motor Assembly Maintenance...........................31
14.4 Heat Exchanger Maintenance ..................................32
14.5 Gas Control Valve Maintenance
...............................
32
14.6 Flue Fan ...................................................................32
1
4.7 Maintenance Checklist .............................................32
SECTION 15: Conversion Between Gases ..........................34
15.1 General ....................................................................34
15.2 Bur
ner Conversion ...................................................34
1
5.3 Gas Valves ...............................................................
34
SECTION 16: Troubleshooting .............................................35
1
6.1 General ....................................................................36
16.2 Troubleshooting For Au
tomatic Ignition Burner
Systems ...................................................................37
16.3 Troubleshooting for Flame Superv
ision System .......38
16.4 Troubleshooting for Solenoid Valv
es ........................38
SECTION 17: Removal and Replacement Parts..................39
17.1 Gas Valve..................................................................39
1
7.2 Burner Compartment
................................................40
17.3 Ignition Electrode and Flame Probe..........................42
17.4 Flue Fan....................................................................43
1
7.5 Pressure Switch ........................................................
44
17.6 Ignition Control..........................................................45
17.7 CTUA Axial Fan/Guard/Motor Assembly
...................45
17.8 CTUB & CTUC Centrifugal Fan/G
uard/Motor
Assembly ..................................................................45
17.9 Fan Data ...................................................................46
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