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Roberts Gorden CTU 22 TO 115 service manual Flue Fan

Models: CTU 22 TO 115

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16.4 Flue Fan

COMBAT® CTU UNIT HEATERS INSTALLATION OPERATION AND SERVICE MANUAL

16.4 Flue Fan

Rear Panel

Flue Adapter

Hole to Flue Fan screws

Vent Box

	Vent Box	Flue
	Vent Box	Outlet Adapter
	Screws	Outlet Adapter
		Gasket
		Flue Fan
		Disconnect
		electrical connections
		at plug in tabs.

Remove screws securing outlet flange to the flue adapter.

	Mounting	Vent Box
	Mounting
	Plate
Gasket		Mounting Plate
Gasket		to Vent Box
		Screws
		Gasket
Mounting Plate		Air Plate
to Flue Fan		Air Plate
to Flue Fan
Screws

Remove screws securing flue fan mounting plate to vent box. Remove screws securing mounting plate to fan.

Refit in reverse. Use new gaskets. Ensure sealed joints.

Ensure mounting plate orifice is clear and not obstructed.

MODEL	CTU-22	CTU-30	CTU-35	CTU-40	CTU-50	CTU-60	CTU-75	CTU-90	CTU-100	CTU-115

Flue Fan	Torin DSA	Torin DSA	Torin DSA	Torin DSA	Torin DSA	Torin DSA	AO Smith	AO Smith	AO Smith	Torin DSF
	508-128	508-128	508-128	508-128	524-202	524-202	JFIG098NS	JFIG098NS	JFIG098NS	146-052
	077272	077272	077272	077272	077273	077273				077274

RG P/N	90710430	90710430	90710430	90710430	90710440	90710440	90710001	90710001	90710001	90710450

Air mm Ø	47.6	53.1	60.7	69.1	60.7	69.9	97.0	103.6	110.5	152.4
Plate in Ø	1.875	2.09	2.39	2.72	2.39	2.75	3.82	4.08	4.35	6

RG P/N	11011139	1101138	1101140	11011137	11011136	11011135	11011134	11011133	11011132	11011131

IT IS IMPORTANT THAT ONLY THE CORRECT FLUE FAN SPECIFIED FOR EACH MODEL TYPE IS USED WHEN REPLACING THESE ITEMS.

Carry out a commission after working on or changing a flue fan. See Page 28, Section 12.

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Roberts Gorden CTU 22 TO 115 service manual Flue Fan

Contents

Quality in Any Language CombatIf you smell gas Page 2007 Roberts-Gordon,LLC Page TABLE OF FIGURES Page Product Approval SECTION 1 HEATER SAFETY SECTION 2 INSTALLER RESPONSIBILITY2.1 Clearances to Combustibles 2.2 Corrosive Chemicals3.3 Minimum Required Installation Clearances 3.4 Clearances to Combustibles3.5 Ventilation 3.6 Gas SupplyInstallation Clearances SECTION 4 SPECIFICATIONS 4.1 CTUA Dimension Data - CTUA All ModelsTop View End ViewDimension Data - CTUB, CTUC and CTUD 4.2 CTUB, CTUC and CTUD4.3 General Technical Data Table 4.4Technical Data Table Appliance Category II 2H/L 3B/P SECTION 5 HEATER INSTALLATION 5.1 General 5.2 HandlingFigure 2 Suspension Methods 5.3 Shelf Mounting and Suspensionterminal. See Page 11, Figure 6.3 Type B22 ApplianceSee Page 10, Figure 3 through Page 11, Figure 6.3.1 Air Intake Terminal CoverRoof Terminal 7.1 Room Sealed Installation 7.2 Open Flued Installation7.2.1 Heaters Installed Within the Heated Space SECTION 7 AIR SUPPLYFigure 8 Ducting SECTION 8 OPTIONAL HEATER CONFIGURATIONS8.1.1 CTUD Heaters SECTION 9 GAS PIPING 9.1 ConnectionsSECTION 10 WIRING AND ELECTRICAL INFORMATION 10.2 Remote Controls10.1 Electrical Supply ModelsIGNITION MODULE 10.3 CTUA Wiring Diagram ModelsIGNITION MODULE SECTION 10 WIRING AND ELECTRICAL INFORMATION SITE WIRING10.4 CTUA Wiring Diagram Models SITE WIRING 10.5 CTUB/C Wiring Diagram ModelsIGNITION MODULE IGNITION MODULE10.6 CTUB/C Wiring Diagram Models SITE WIRINGSECTION 10 WIRING AND ELECTRICAL INFORMATION IGNITION MODULE10.7 CTUB/C Wiring Diagram Models SITE WIRING10.8 CTUD Wiring Diagram Models For external fan wiringSee Page 23, Section SITE WIRINGSee Page 23, Section 10.9 CTUD Wiring Diagram ModelsSITE Single Phase Motor with Load over 7 Amps SECTION 11 COMMISSIONING 11.1 Pre-CommissionChecks11.1.1 Louvres 11.1.2 Electrical ChecksFigure 10 Automatic Burner Control Box Sequence Figure 11 Gas Valve for Heater Models11.5 Combustion Testing Figure 12 Gas Valve for Heater ModelsCheck Gas Rate 11.6 Turning Off the Heater11.9 Instruction to the User 11.7 External Controls11.8 Complete the Commissioning 12.3.2 Burner Lockout Reset Button See Page 28, Section12.2 Heater Operation Figure 13 Heater Operating Sequence12.5 Simple Fault Finding 12.5.1 Simple Fault Finding Burner Faults12.4.2 To Turn the Heater Off See Page 5, Section13.2 Burner Maintenance 13.3 Fan/Motor Assembly Maintenance13.4 Heat Exchanger Maintenance 13.5 Gas Control Valve 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 15.3Troubleshooting for Flame Supervision System 15.4Troubleshooting for Solenoid ValvesSECTION 16 REMOVAL AND REPLACEMENT PARTS Burner Components16.1 Gas Valve 16.1.1 Models16.2 Burner Compartment 16.2.1 Burner InjectorsEnsure gas tight fitting of injectors Ensure correct alignment with burners16.3 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 Replacement16.7.2 To Replace the Fan Assembly 16.8.1 Fan Removal and ReplacementFigure 14 Centrifugal Fan Orientation 16.9 Fan DataPage Page Page injury or property damage Fire Hazardclose to heater