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Roberts Gorden
CTCU 11, CTCU 27, CTCU 15, CTCU 22, CTCU 7 service manual
Models:
CTCU 7
CTCU 22
CTCU 11
CTCU 15
CTCU
CTCU 27
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Troubleshooting
Specification
Install
CTCUA Wiring Diagram Models 7
Removal And Replacement Parts
Maintenance
Wiring And Electrical Information
Limit Thermostat Reset See Page 18, Section
CTCUA Axial Fan/Guard/Motor Assembly
Simple Fault Finding
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Contents
when placed close to heater
Installation, Commissioning
FOR YOUR SAFETY
DO NOT use electrical switches
Page
2006 Roberts-Gordon,LLC
TABLE OF CONTENTS
Page
TABLE OF FIGURES
Page
Product Approval
2.2 Corrosive Chemicals
SECTION 1 HEATER SAFETY
SECTION 2 INSTALLER RESPONSIBILITY
2.1 Clearances to Combustibles
3.5 Ventilation
3.3 Minimum Required Installation Clearances
3.8 Flue
3.4 Clearances to Combustibles
fans are installed
SECTION 4 SPECIFICATIONS 4.1 CTCUA All Models
Dimension Data - CTCUA All Models
140 for
4.2 General Technical Data Table All Models
5.3 Wall Mounting
SECTION 5 HEATER INSTALLATION 5.1 General
5.2 Shelf Mounting and Suspension
Figure 2 Suspension Methods
Figure 4 Vertical Louvres Optional
Figure 3 Shelf Mounting and Hanging Suspension
6.4 Type B22 Appliance
SECTION 6 FLUE INSTALLATION
6.2 Flue Installation
6.1 Changing Flue and Air Intake Orientation
Option
Vertical
Option
Horizontal
SECTION 7 AIR SUPPLY
7.1 Room Sealed Installation
7.2 Open Flued Installation
7.2.1 Heaters Installed Within the Heated Space
8.1 Connections
SECTION 8 GAS PIPING
9.2.1 Burner Controls Thermostat
SECTION 9 WIRING AND ELECTRICAL INFORMATION
9.2 Remote Controls
9.1 Electrical Supply
SITE WIRING
9.3 CTCUA Wiring Diagram Models 7 -
10.1.3 Gas Supply
SECTION 10 COMMISSIONING
10.1 Pre-CommissionChecks
10.1.1 Louvres
Figure 9 Automatic Burner Control Box Sequence
Figure 10 Gas Valve for Heater Models
End View
10.2.5 Turning Off the Heater
10.2.3 Combustion Testing
10.2.4 Pressure Switch
Check Gas Rate
Figure 11 Heater Operating Sequence
Limit Thermostat Reset See Page 18, Section
11.3.3 Burner Lockout Reset Button
11.2 Heater Operation
See Page 5, Section
11.5 Simple Fault Finding
11.5.1 Simple Fault Finding Burner Faults
11.4.2 To Turn the Heater Off
12.5 Gas Control Valve Maintenance
12.2 Burner Maintenance
12.3 Fan/Motor Assembly Maintenance
12.4 Heat Exchanger Maintenance
SECTION 13 CONVERSION BETWEEN GASES 13.1 General
13.2 Burner Conversion
13.3 Gas Valves
SECTION 14 TROUBLESHOOTING 14.1 General
Explosion Hazard
Start
Start
Voltage from ignition components is high
TROUBLESHOOT ENDS. No
14.3 Troubleshooting for Flame Supervision System
START
14.4 Troubleshooting for Solenoid Valves
14.5 Troubleshooting for Main Fan
START
15.1 Gas Valve
SECTION 15 REMOVAL AND REPLACEMENT PARTS
GAS VALVE IS USED WHEN REPLACING THESE CONTROLS
Burner Components
15.2.1 Burner Injectors
15.2 Burner Compartment
15.3 Ignition Electrode and Flame Probe
15.4 Flue Fan Vertical Installation
15.5 Pressure Switch
15.6 Ignition Control
15.7 CTCUA Axial Fan/Guard/Motor Assembly
15.7.1 Fan Removal and Replacement
15.7.2 To Replace the Fan Assembly
Page
Page
Fire Hazard
close to heater
injury or property damage
