Roberts Gorden CTCU 22, CTCU 27, CTCU 15, CTCU 11, CTCU 7, CTCU 32 service manual Table of Contents

TABLE OF CONTENTS
SECTION 1: Heater Safety		2
1.1 Manpower Requirements		2
1.2 Safety Labels and Their Placement		2
SECTION 2: Installer Responsibility		4
2.1	Clearances to Combustibles	4
2.2	Corrosive Chemicals	4
2.3	National Standards and Applicable Codes	4
SECTION 3: Clearances to Combustibles		5
3.1	Required Clearances to Combustibles	5
SECTION 4: Critcal Considerations		7
4.1	Ventilation	7
4.2	Gas Supply	7
4.3	Electrical Supply	7
4.4	Flue	7
SECTION 5: Specifications		8
5.1	CTCUA (All Models)	8
5.2	General Technical Data Table (All Models)	9
5.3	Technical Data Table (All Models)	9
SECTION 6: Heater Installation		10
6.1	General	10
6.2	Basic Information	10
6.3	Location and Suspension	10
6.4	Handling	10
6.5	Suspension and Shelf Mounting	10
6.6	Wall Mounting	10
SECTION 7: Flue Installation		13
7.1 Flue Installation		13
7.2 Changing Flue and Air Intake Orientation		13
7.3 Type C12, C32 & C62 Appliance		13
7.4 Type B22 Appliance		13
SECTION 8: Air Supply		16
8.1	Room Sealed Installation	16
8.2	Open Flued Installation	16
8.3	Building Ventilation	16
SECTION 9: Gas Pipe Work		17
9.1	Connections	17
SECTION 10: Wiring and Electrical Information		19
10.1 Electrical Supply		19
10.2 Remote Controls		19
10.3 CTCUA Wiring Diagram (Models 7-32)		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		22
11.5 Combustion Testing		23
11.6 Turning Off the Heater		23
11.7 External Controls		23
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		25
12.4 Lighting Instructions		26
12.5 Simple Fault Finding		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	28
13.6	Flue Fan	28
13.7	Maintenance Checklist	28
SECTION 14: Conversion Between Gases		30
14.1	General	30
14.2	Burner Conversion	30
14.3	Gas Valves	30
SECTION 15: Troubleshooting		31
15.1	General	32
15.2	Troubleshooting For Automatic Ignition Burner
	Systems	33
15.3	Troubleshooting for Flame Supervision System	34
15.4	Troubleshooting for Solenoid Valves	34
15.5	Troubleshooting for Main Fan	35
SECTION 16: Removal and Replacement Parts		36
16.1	Gas Valve	36
16.2	Burner Compartment	37
16.3	Ignition Electrode and Flame Probe	38
16.4	Flue Fan Vertical Installation (Models 7 - 15)	39
16.5	Flue Fan Vertical Installation (Models 22 - 32)	40
16.6	Pressure Switch	41
16.7	Ignition Control	42
16.8	CTCUA Axial Fan/Guard/Motor Assembly	42
16.9	Fan and Limit Thermostats	42

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