Roberts Gorden UHA[X][S] 100 Heat Exchanger, Louver and Louver Springs, Horizontal, Vertical

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14.4 Heat Exchanger

SECTION 14: REPLACEMENT PARTS

14.4 Heat Exchanger

The heat exchanger consists of a four-pass design with 1.5" outer diameter [aluminized steel][409 stainless steel] tube. The tube plates are made of [aluminized steel][409 stainless steel]. The tube supports are made of [galvannealed steel] [409 stainless steel].

14.5 Louver and Louver Springs

Horizontal	Vertical
Louvers	Louvers

Install Vertical Louver Brackets (top and bottom) with supplied

Install Vertical screws.

Louver Brackets (top and bottom) with supplied screws.

Push in Louver and compress

spring to remove

(opposite end first)

spring to remove

For models UHA[X][S] 60 and UHA[X][S] 75, horizontal louvers are (opposite end first)

Install Vertical Louvers and Springs into Brackets

with Springs at Top

Install Vertical Louvers and Spring into Brackets with Springs at Top

re-used.

	Description	UHA[X][S]	UHA[X][S]	UHA[X][S]
	Description	30 - 45	60 - 75	100 - 125
		30 - 45	60 - 75	100 - 125
	Horizontal Louvers P/N		11111900
	Spring P/N		91901200
	Quantity	3	5	7

Description	Part Number	Qty.
Vertical Louver Kit UHA[X][S] 30	12011003K
& UHA[X][S] 45	12011003K
& UHA[X][S] 45

Vertical Louver Bracket	-	2
UHA[X][S] 30 - 45 Vertical Louvers	-	4
Louver Spring	-	5
Instruction Sheet	-	2
#10 Screw	-	1
#10 Screw	-	4

Description	Part Number	Qty.
Vertical Louver Kit UHA[X][S] 60	12011005K
& UHA[X][S] 75	12011005K
& UHA[X][S] 75

Vertical Louver Bracket	-	2
UHA[X][S] 60 - 75 Vertical Louvers	-	5
Instruction Sheet	-	1
#10 Screw	-	4

Description	Part Number	Qty.
Vertical Louver Kit UHA[X][S] 100 &	12011004K
UHA[X][S] 125	12011004K
UHA[X][S] 125
Vertical Louver Bracket	-	2
UHA[X][S] 100 - 125 Vertical Louvers	-	5
Instruction Sheet	-	1
#10 Screw	-	4

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Contents Models UHAXS 30, 45, 60, 75, 100, Installation, Operation & Service ManualCombat UHA-Series Tubular Unit Heaters Low Profile RangePage TABLE OF CONTENTS 2008 Roberts-GordonLLCPrinted in U.S.A Page TABLE OF FIGURES Page SECTION 1: HEATER SAFETY 1.1 Manpower Requirements1.2 Safety Labels and Their Placement For separated combustion units only Figure 1: UHA 30 - 45 Label PlacementFor separated combustion units only Figure 2: UHA 60 - 75 Label PlacementFor separated combustion units only Figure 3: UHA 100 - 125 Label Placement2.3 National Standards and Applicable Codes SECTION 2: INSTALLER RESPONSIBILITY2.1 Wall Tag 2.2 Corrosive Chemicals3.6 Ventilation 3.4 Minimum Required Installation Clearances3.2 Manufactured Units 3.5 Clearances to Combustibles3.7 Gas Supply 3.8 Electrical Supply3.9 Vent 4.4 Electrical 4.1 Gas Codes4.2 Aircraft Hangars 4.3 Parking Structures and Repair Garages4.6 High Altitude Crush Hazard Use 3/8 threaded rod minimum SECTION 5: MAJOR COMPONENTS 5.1 General5.2 Shelf Mounting and Suspension 5.3 Wall MountingFigure 5: Suspension Methods Figure 6: Shelf-MountingMethodsExisting cabinet screws must be re-used Description DescriptionPart Number Wall Shelf Mounting Bracket Kitspring to remove Figure 8: Vertical Louvers OptionalPush in louver and compress6.2 Venting 6.3 Vent InstallationSECTION 6 VENTING 6.1 Changing Vent and Air Intake Orientation6.3.1Standard Vented Heaters Models UHAX 30 - 6.4 Unvented Operation6.5 Horizontal Venting 6.8 Vent Material 6.6 Vertical Venting6.7 Length Requirements 6.7.1 Maximum Vent LengthsOption Figure 9: Vent and Roof DetailVertical HorizontalPage Option Figure 13: Concentric Vent BoxVertical Option HorizontalVent Terminal 7.3 Building Ventilation 7.1 Separated Combustion Installation7.2 Unvented Installation SECTION 7 AIR SUPPLYSECTION 8: GAS PIPING 8.1 ConnectionsFigure 15: Gas Connection 9.2 Low Voltage Thermostat with One Heater SECTION 9: WIRING9.1 Positioning Thermostats 9.1.1 Fan ControlUHAXS 30 - ModelRelay Type Relay Part NumberMax. Number of Heaters UHAXS 60 -DPST 904363009.5 Internal Wiring Diagram 9.6 Ladder Wiring Diagram 9.7 Electrical Connection to the Heater 10.1.2 Electrical Checks SECTION 10: OPERATION AND MAINTENANCE10.1 Pre-Start-UpChecks 10.1.1 LouversSignals Output By Control Figure 16: Automatic Burner Control SequenceFigure 17: Gas Valve for Models UHAXS 30 - Required Incoming Signals10.2.4 Turning Off the Heater 10.2.3 Pressure SwitchFigure 18: Gas Valve for Models UHAXS 60 - Check Gas Rate10.2.5 External Controls 10.3 Complete Start-Up10.3.1 Instruction to the User 11.1 User Instructions Reset Limit Switch - See Page 33, SectionFigure 19: Manual Reset Limit Switch SECTION 11: USER INSTRUCTIONS11.4.2 To Turn the Heater Off 11.5 Simple Troubleshooting11.5.1 Simple Troubleshooting Burner Faults Figure 20: LED Diagnostic Codes12.5 Gas Valve Maintenance 12.2 Burner Maintenance12.3 Fan/Motor Assembly Maintenance 12.4 Heat Exchanger MaintenanceSee Page 6, Section 12.8 Maintenance Checklist12.7 Venting and Air Intake Pipe The Vicinity of the HeaterHeat Exchanger when installedCombustion Air Intake PipeSTART SECTION 13: TROUBLESHOOTING 13.1 GeneralSECTION 13: TROUBLESHOOTING 13.3 Troubleshooting for Flame Supervision System START 13.4Troubleshooting for Gas Valves13.5Troubleshooting for Flue Blower Correct powerSECTION 14 REPLACEMENT PARTS Burner Components14.1 Gas Valve 14.2.1 Burner Injectors 14.2 Burner Compartment14.3 Ignition Electrode and Flame Probe Horizontal 14.4 Heat Exchanger14.5 Louver and Louver Springs Install Vertical screws14.6 Flue Blower Vertical Installation 14.7 Pressure Switch 14.9 Axial Fan/Guard/Motor Assembly14.8 Ignition Control 14.10.1 Removal and Replacement 14.9.1 Fan Removal and Replacement14.9.2 To Replace the Fan Assembly 14.10 Limit SwitchesREAR VIEW SECTION 15: SPECIFICATIONS 15.1 Dimension DataTOP VIEW SIDE VIEW15.3 Technical Data Table All Models 15.2 General Technical Data Table All ModelsRoberts-Gordon WARRANTY IS VOID IFROBERTS GORDON WILL PAY FOR ROBERTS GORDON WILL NOT PAY FORPage Type of Installation check one OWNER WARRANTY REGISTRATION CARDAbout the Installer Purchased From if different than installerPage Page injury or property damage Installation ClearancesFire Hazard close to heater