Manuals / Roberts Gorden / Household Appliance / Gas Heater

Roberts Gorden UHA[X][S] 75, UHA[X][S] 45 Vent and Roof Detail, Vertical, Horizontal, Option

Models: UHA[X][S] 75 UHA[X][S] 60 UHA[X][S] 100 UHA[X][S] 125 UHA[X][S] 30 UHA[X][S] 45

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Figure 9: Vent and Roof Detail

SECTION 6: VENTING

are located and other spaces of the building. Turn on clothes dryers and any exhaust fans, such as range hoods and bathroom exhausts so that they shall operate at maximum speed. Do not operate a summer exhaust fan. Close fireplace dampers.

4.Follow the lighting instructions. Place the appliance being inspected in operation. Adjust thermostat so that the appliance will operate continuously.

5.For any appliance having a draft hood, test for draft hood appliance spillage at the draft hood relief opening after 5 minutes of main burner operation. Use the flame of a match or candle.

6.After it has been determined that each appliance connected to the venting system properly vents when tested as outlined above, return doors, windows, exhaust fans, fireplace dampers and any other gas-burning appliances to their previous conditions of use.

7.If improper venting is observed during any of the above tests, the venting system must be corrected by a contractor qualified in the installation and service of gas-fired equipment or your local gas supplier. If the venting must be resized, use appropriate tables in (US) Appendix G of NFPA 54/ANSI Z223.1 - latest revision, National Fuel Gas Code (US) or Standard CSA B149.1 Natural Gas and Propane Installation Code (Canada) to determine minimum size. All vent corrections

must be in accordance with the appropriate local codes and the NFPA 54/ANSI Z223.1 - latest revision, National Fuel Gas Code (US) or Standard CSA B149.1 Natural Gas and Propane Installation Code (Canada).

Figure 9: Vent and Roof Detail

Figure 10: Standard Vented Heater - Vertical and Horizontal Vent Termination

			Vent Terminal	NOTE: Vent supports not
			Vent Terminal	shown.
				shown.
		Flashing
		(By Others)
		Listed
		Thimble
	(2" [5 cm]			Listed
	Clearance)			Listed
		4" (10 cm)		Thimble
		4" (10 cm)		(2" [5 cm] Clearance)
		Diameter Vent
		Vertical	Horizontal	Flashing
		Option	Horizontal	(By Others)
			Option
				Vent
				Terminal
			Vent
				12" (31 cm)
				Minimum
Model	Vent Diameter	Part Number
UHA[X] 30 - 125	4" (10 cm)	90502102
				17

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Roberts Gorden UHA[X][S] 75, UHA[X][S] 45, UHA[X][S] 30, UHA[X][S] 125 Vent and Roof Detail, Vertical, Horizontal, Option

Contents

Models UHAXS 30, 45, 60, 75, 100, Installation, Operation & Service ManualCombat UHA-Series Tubular Unit Heaters Low Profile RangePage Printed in U.S.A TABLE OF CONTENTS2008 Roberts-GordonLLC Page TABLE OF FIGURES Page 1.2 Safety Labels and Their Placement SECTION 1: HEATER SAFETY1.1 Manpower Requirements For separated combustion units only Figure 1: UHA 30 - 45 Label Placement For separated combustion units only Figure 2: UHA 60 - 75 Label Placement For separated combustion units only Figure 3: UHA 100 - 125 Label Placement 2.3 National Standards and Applicable Codes SECTION 2: INSTALLER RESPONSIBILITY2.1 Wall Tag 2.2 Corrosive Chemicals 3.6 Ventilation 3.4 Minimum Required Installation Clearances3.2 Manufactured Units 3.5 Clearances to Combustibles 3.9 Vent 3.7 Gas Supply3.8 Electrical Supply 4.4 Electrical 4.1 Gas Codes4.2 Aircraft Hangars 4.3 Parking Structures and Repair Garages 4.6 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 Mounting Existing cabinet screws must be re-used Figure 5: Suspension MethodsFigure 6: Shelf-MountingMethods Description DescriptionPart Number Wall Shelf Mounting Bracket Kit spring to remove Figure 8: Vertical Louvers OptionalPush in louver and compress 6.2 Venting 6.3 Vent InstallationSECTION 6 VENTING 6.1 Changing Vent and Air Intake Orientation 6.5 Horizontal Venting 6.3.1Standard Vented Heaters Models UHAX 30 -6.4 Unvented Operation 6.8 Vent Material 6.6 Vertical Venting6.7 Length Requirements 6.7.1 Maximum Vent Lengths Option Figure 9: Vent and Roof DetailVertical HorizontalPage Option Figure 13: Concentric Vent BoxVertical Option Horizontal Vent Terminal 7.3 Building Ventilation 7.1 Separated Combustion Installation7.2 Unvented Installation SECTION 7 AIR SUPPLY Figure 15: Gas Connection SECTION 8: GAS PIPING8.1 Connections 9.2 Low Voltage Thermostat with One Heater SECTION 9: WIRING9.1 Positioning Thermostats 9.1.1 Fan Control UHAXS 30 - ModelRelay Type Relay Part Number Max. Number of Heaters UHAXS 60 -DPST 90436300 9.5 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 Louvers Signals Output By Control Figure 16: Automatic Burner Control SequenceFigure 17: Gas Valve for Models UHAXS 30 - Required Incoming Signals 10.2.4 Turning Off the Heater 10.2.3 Pressure SwitchFigure 18: Gas Valve for Models UHAXS 60 - Check Gas Rate 10.3.1 Instruction to the User 10.2.5 External Controls10.3 Complete Start-Up 11.1 User Instructions Reset Limit Switch - See Page 33, SectionFigure 19: Manual Reset Limit Switch SECTION 11: USER INSTRUCTIONS 11.4.2 To Turn the Heater Off 11.5 Simple Troubleshooting11.5.1 Simple Troubleshooting Burner Faults Figure 20: LED Diagnostic Codes 12.5 Gas Valve Maintenance 12.2 Burner Maintenance12.3 Fan/Motor Assembly Maintenance 12.4 Heat Exchanger Maintenance See Page 6, Section 12.8 Maintenance Checklist12.7 Venting and Air Intake Pipe The Vicinity of the Heater Heat Exchanger when installedCombustion Air Intake Pipe START SECTION 13: TROUBLESHOOTING 13.1 General SECTION 13: TROUBLESHOOTING 13.3 Troubleshooting for Flame Supervision System START 13.4Troubleshooting for Gas Valves13.5Troubleshooting for Flue Blower Correct power 14.1 Gas Valve SECTION 14 REPLACEMENT PARTSBurner Components 14.2.1 Burner Injectors 14.2 Burner Compartment 14.3 Ignition Electrode and Flame Probe Horizontal 14.4 Heat Exchanger14.5 Louver and Louver Springs Install Vertical screws 14.6 Flue Blower Vertical Installation 14.8 Ignition Control 14.7 Pressure Switch14.9 Axial Fan/Guard/Motor Assembly 14.10.1 Removal and Replacement 14.9.1 Fan Removal and Replacement14.9.2 To Replace the Fan Assembly 14.10 Limit Switches REAR VIEW SECTION 15: SPECIFICATIONS 15.1 Dimension DataTOP VIEW SIDE VIEW 15.3 Technical Data Table All Models 15.2 General Technical Data Table All Models Roberts-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