Combat
If you smell gas
Quality in Any Language
Page
2007 Roberts-Gordon,LLC
Page
TABLE OF FIGURES
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Product Approval
SECTION 1 HEATER SAFETY
SECTION 2 INSTALLER RESPONSIBILITY
2.1 Clearances to Combustibles
2.2 Corrosive Chemicals
3.3 Minimum Required Installation Clearances
3.4 Clearances to Combustibles
3.5 Ventilation
3.6 Gas Supply
Installation Clearances
SECTION 4 SPECIFICATIONS 4.1 CTUA
Dimension Data - CTUA All Models
Top View
End View
Dimension Data - CTUB, CTUC and CTUD
4.2 CTUB, CTUC and CTUD
4.3 General Technical Data Table
4.4Technical Data Table Appliance Category II 2H/L 3B/P
SECTION 5 HEATER INSTALLATION 5.1 General
5.2 Handling
Figure 2 Suspension Methods
5.3 Shelf Mounting and Suspension
terminal. See Page 11, Figure
6.3 Type B22 Appliance
See Page 10, Figure 3 through Page 11, Figure
6.3.1 Air Intake Terminal Cover
Roof Terminal
7.1 Room Sealed Installation
7.2 Open Flued Installation
7.2.1 Heaters Installed Within the Heated Space
SECTION 7 AIR SUPPLY
SECTION 8 OPTIONAL HEATER CONFIGURATIONS
8.1.1 CTUD Heaters
Figure 8 Ducting
SECTION 9 GAS PIPING
9.1 Connections
SECTION 10 WIRING AND ELECTRICAL INFORMATION
10.2 Remote Controls
10.1 Electrical Supply
Models
10.3 CTUA Wiring Diagram Models
IGNITION MODULE
IGNITION MODULE
SITE WIRING
10.4 CTUA Wiring Diagram Models
SECTION 10 WIRING AND ELECTRICAL INFORMATION
SITE WIRING
10.5 CTUB/C Wiring Diagram Models
IGNITION MODULE
IGNITION MODULE
10.6 CTUB/C Wiring Diagram Models
SITE WIRING
SECTION 10 WIRING AND ELECTRICAL INFORMATION
IGNITION MODULE
10.7 CTUB/C Wiring Diagram Models
SITE WIRING
10.8 CTUD Wiring Diagram Models
For external fan wiring
See Page 23, Section
SITE WIRING
10.9 CTUD Wiring Diagram Models
SITE
See Page 23, Section
Single Phase Motor with Load over 7 Amps
SECTION 11 COMMISSIONING
11.1 Pre-CommissionChecks
11.1.1 Louvres
11.1.2 Electrical Checks
Figure 10 Automatic Burner Control Box Sequence
Figure 11 Gas Valve for Heater Models
11.5 Combustion Testing
Figure 12 Gas Valve for Heater Models
Check Gas Rate
11.6 Turning Off the Heater
11.7 External Controls
11.8 Complete the Commissioning
11.9 Instruction to the User
12.3.2 Burner Lockout Reset Button
See Page 28, Section
12.2 Heater Operation
Figure 13 Heater Operating Sequence
12.5 Simple Fault Finding
12.5.1 Simple Fault Finding Burner Faults
12.4.2 To Turn the Heater Off
See Page 5, Section
13.2 Burner Maintenance
13.3 Fan/Motor Assembly Maintenance
13.4 Heat Exchanger Maintenance
13.5 Gas Control Valve Maintenance
SECTION 14 CONVERSION BETWEEN GASES 14.1 General
14.2 Burner Conversion
14.3 Gas Valves
SECTION 15 TROUBLESHOOTING 15.1 General
For your safety and optimum heater performance
Conduct Commissioning procedure as shown
on Page 24, Section
15.3Troubleshooting for Flame Supervision System
15.4Troubleshooting for Solenoid Valves
SECTION 16 REMOVAL AND REPLACEMENT PARTS
Burner Components
16.1 Gas Valve
16.1.1 Models
16.2 Burner Compartment
16.2.1 Burner Injectors
Ensure gas tight fitting of injectors
Ensure correct alignment with burners
16.3 Ignition Electrode and Flame Probe
16.4 Flue Fan
16.5 Pressure Switch
16.7 CTUA Axial Fan/Guard/Motor Assembly
16.7.1 Fan Removal and Replacement
16.7.2 To Replace the Fan Assembly
16.8.1 Fan Removal and Replacement
Figure 14 Centrifugal Fan Orientation
16.9 Fan Data
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Fire Hazard
close to heater
injury or property damage
