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Roberts Gorden CTU 22 TO 115 service manual Site Wiring, CTUA Wiring Diagram Models

Models: CTU 22 TO 115

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SECTION 10: WIRING AND ELECTRICAL INFORMATION

10.4 CTUA Wiring Diagram (Models 75-115)

SENSE
BLACK
IGNITION
GREEN/YELLOW
BLACK
S 4563 C Honeywell
BROWN
BLUE
PURPLE GREY	PINK	BLUE

Time Delay Relay

BROWN

BLUE

BROWN

Thermostat Limit

Thermodisc N/C

RUN

FAN	GREEN/YELLOW	BLUE BROWN	LOCKOUT
COMBUSTION			LOCKOUT
	E
	N
	L	BLACK YELLOW
		BLACK YELLOW	WHITE

	BLACK	PRESSURE SWITCH
	NO\P(3)	YELLOW
	C \P(1)	WHITE
	C \P(1)	LOCKOUT
	NC\P(2)	LOCKOUT
		RESET

Pressure Switch

	MAINS FILTER
BROWN BLUE	GREEN/YELLOW BLUE	BROWN

	FAN	BROWN	RED
E	FAN	BROWN	RED
N	AXIAL
N
L
L	FAN


E
N	AXIAL
L	AXIAL

SITE WIRING

Detail

N	L 1	2 3	7	8
GROUND NEUTRAL	LINE REMOTE FAN ON	THERMOSTAT	REMOTE LOCKOUT INDICATION	REMOTE LOCKOUT RESET

NOTE:

If any of the original wire supplied with the heater must be replaced, it must be replaced with wiring material having a temperature rating of at least 105° C and 600 volts.

230V 1 Ø

50 Hz

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Roberts Gorden CTU 22 TO 115 service manual Site Wiring, CTUA Wiring Diagram Models, Wiring And Electrical Information

Contents

Quality in Any Language CombatIf you smell gas Page 2007 Roberts-Gordon,LLC Page TABLE OF FIGURES Page Product Approval 2.2 Corrosive Chemicals SECTION 1 HEATER SAFETYSECTION 2 INSTALLER RESPONSIBILITY 2.1 Clearances to Combustibles3.6 Gas Supply 3.3 Minimum Required Installation Clearances3.4 Clearances to Combustibles 3.5 VentilationInstallation Clearances End View SECTION 4 SPECIFICATIONS 4.1 CTUADimension Data - CTUA All Models Top View4.2 CTUB, CTUC and CTUD Dimension Data - CTUB, CTUC and CTUD4.3 General Technical Data Table 4.4Technical Data Table Appliance Category II 2H/L 3B/P 5.3 Shelf Mounting and Suspension SECTION 5 HEATER INSTALLATION 5.1 General5.2 Handling Figure 2 Suspension Methods6.3.1 Air Intake Terminal Cover terminal. See Page 11, Figure6.3 Type B22 Appliance See Page 10, Figure 3 through Page 11, FigureRoof Terminal SECTION 7 AIR SUPPLY 7.1 Room Sealed Installation7.2 Open Flued Installation 7.2.1 Heaters Installed Within the Heated SpaceFigure 8 Ducting SECTION 8 OPTIONAL HEATER CONFIGURATIONS8.1.1 CTUD Heaters 9.1 Connections SECTION 9 GAS PIPINGModels SECTION 10 WIRING AND ELECTRICAL INFORMATION10.2 Remote Controls 10.1 Electrical SupplyIGNITION MODULE 10.3 CTUA Wiring Diagram ModelsIGNITION MODULE SECTION 10 WIRING AND ELECTRICAL INFORMATION SITE WIRING10.4 CTUA Wiring Diagram Models IGNITION MODULE SITE WIRING10.5 CTUB/C Wiring Diagram Models IGNITION MODULEIGNITION MODULE 10.6 CTUB/C Wiring Diagram ModelsSITE WIRING SECTION 10 WIRING AND ELECTRICAL INFORMATIONSITE WIRING 10.7 CTUB/C Wiring Diagram ModelsSITE WIRING 10.8 CTUD Wiring Diagram ModelsFor external fan wiring See Page 23, SectionSee Page 23, Section 10.9 CTUD Wiring Diagram ModelsSITE Single Phase Motor with Load over 7 Amps 11.1.2 Electrical Checks SECTION 11 COMMISSIONING11.1 Pre-CommissionChecks 11.1.1 LouvresFigure 11 Gas Valve for Heater Models Figure 10 Automatic Burner Control Box Sequence11.6 Turning Off the Heater 11.5 Combustion TestingFigure 12 Gas Valve for Heater Models Check Gas Rate11.9 Instruction to the User 11.7 External Controls11.8 Complete the Commissioning Figure 13 Heater Operating Sequence 12.3.2 Burner Lockout Reset ButtonSee Page 28, Section 12.2 Heater OperationSee Page 5, Section 12.5 Simple Fault Finding12.5.1 Simple Fault Finding Burner Faults 12.4.2 To Turn the Heater Off13.5 Gas Control Valve Maintenance 13.2 Burner Maintenance13.3 Fan/Motor Assembly Maintenance 13.4 Heat Exchanger Maintenance14.3 Gas Valves SECTION 14 CONVERSION BETWEEN GASES 14.1 General14.2 Burner Conversion SECTION 15 TROUBLESHOOTING 15.1 General on Page 24, Section For your safety and optimum heater performanceConduct Commissioning procedure as shown 15.4Troubleshooting for Solenoid Valves 15.3Troubleshooting for Flame Supervision System16.1.1 Models SECTION 16 REMOVAL AND REPLACEMENT PARTSBurner Components 16.1 Gas ValveEnsure correct alignment with burners 16.2 Burner Compartment16.2.1 Burner Injectors Ensure gas tight fitting of injectors16.3 Ignition Electrode and Flame Probe 16.4 Flue Fan 16.5 Pressure Switch 16.8.1 Fan Removal and Replacement 16.7 CTUA Axial Fan/Guard/Motor Assembly16.7.1 Fan Removal and Replacement 16.7.2 To Replace the Fan Assembly16.9 Fan Data Figure 14 Centrifugal Fan OrientationPage Page Page injury or property damage Fire Hazardclose to heater