Roberts Gorden Combat UHD[X][S][R] 75 Service Manual

Installation, Operation& Service ManualModels UHD[X][S][R]75, 100, 125P/N 113000NA 11/08 Orig.UHD-SeriesTubular Duct Furnace(Low Profile Range)WAR

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL4 3.6 VentilationIt is important to ensure that there is adequate air space aro

SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES5SECTION 4: NATIONAL STANDARDS AND APPLICABLE CODES4.1 Gas CodesThe type of gas appearing on the nam

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL6 4.6 High AltitudeThese heaters are CSA-approved (without modifications) for i

SECTION 5: DUCT HEATER INSTALLATION7SECTION 5: DUCT HEATER INSTALLATION 5.1 General To connect the inlet and outlet ducts to the heater, Duct-Mate or

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL8 5.2 Shelf Mounting and SuspensionFour suspension points (3/8" nuts) are

SECTION 5: DUCT HEATER INSTALLATION9Figure 4: Shelf-Mounting Methods Figure 5: Wall Shelf Mounting and SuspensionShelf Mounting BracketsDescription Pa

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL10 SECTION 6: VENTING6.1 Changing Vent and Air Intake OrientationThe heater is

SECTION 6: VENTING11Vents and air intakes must be adequately supported so that the heater does not bear the weight of the pipes.For vent termination S

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL12 and additional sealing measures (high temperature silicone at all seams) are

SECTION 6: VENTING13Figure 6: Vent and Roof DetailFigure 7: Standard Vented Heater - Vertical and Horizontal Vent TerminationModel Vent Diameter Part

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL14 Figure 8: Standard Vented Heater - Common Vertical Vent Termination

SECTION 6: VENTING15Figure 9: Separated Combustion Heater - Vertical and Horizontal Vent TerminationFigure 10: Concentric Vent BoxModelAir Intake &

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL16 Figure 11: Concentric Vertical and Horizontal Vent Termination - Separated C

SECTION 7: AIR SUPPLY17SECTION 7: AIR SUPPLY7.1 Separated Combustion InstallationWhen installed as a separated combustion heater (UHD[X]S[R]), the air

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL18 SECTION 8: GAS PIPINGA gas meter is connected to the service pipe by the gas

SECTION 9: WIRING19SECTION 9: WIRINGAll heater models require constant 120 V/1Ø/ 60 Hz power supply. Check heater rating plate for electrical rating

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL20 9.3 Internal Wiring DiagramIMPORTANT:For field wiring into service junction

SECTION 9: WIRING219.4 Ladder Wiring DiagramIMPORTANT:For field wiring into service junction box, or if any of the original wire supplied with the hea

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL22 9.5 Electrical Connection to the HeaterIMPORTANT: Junction box is not provid

SECTION 10: OPERATION AND MAINTENANCE23SECTION 10: OPERATION AND MAINTENANCERead this manual carefully before installation, operation, or service of t

© 2008 Roberts-Gordon LLCAll rights reserved. No part of this work covered by the copyrights herein may be reproduced or copied in any form or by any

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL24 Figure 13: Automatic Burner Control SequenceFigure 14: Gas Valve Burner Sequ

SECTION 10: OPERATION AND MAINTENANCE2510.2.2 Start-Up the Gas Valve (All Gases)10.2.2.1 Check Burner Gas Pressure1. Remove the plug in the outlet (bu

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL26 SECTION 11: USER INSTRUCTIONS11.1 User InstructionsThe UHD[X][S][R] Series h

SECTION 11: USER INSTRUCTIONS2711.4.2 To Turn Heater Off Set the thermostat to the "OFF" position.The burner will turn off immediately.To re

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL28 SECTION 12: SERVICING12.1 Servicing InstructionsAfter start-up, the heater w

SECTION 12: SERVICING2912.7 Maintenance ChecklistInstallation Code and Annual Inspections: All installations and service of ROBERTS GORDON® equipment

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL30 Gas Line and Shut-off ValvesCheck for gas leaks.See Page 18, Section 8.Burne

SECTION 13: TROUBLESHOOTING31SECTION 13: TROUBLESHOOTING13.1 GeneralEnsure air flow through the heat exchanger is appropriate per the rating plate.If

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL32 13.2 Troubleshooting For Automatic Ignition Burner SystemsIf problems persis

SECTION 13: TROUBLESHOOTING3313.3 Troubleshooting for Flame Supervision SystemNOTE: Minimum flame probe current 1 μA DC. Typical flame probe current 3

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL34 13.4 Troubleshooting for Gas Valves13.5 Troubleshooting for Flue Blower Valv

SECTION 14: REPLACEMENT PARTS35SECTION 14: REPLACEMENT PARTS Burner ComponentsAll serviceable burner parts are accessed by the door on the side of the

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL36 14.2 Burner Compartment14.2.1 Burner InjectorsRemove flexibleair duct from s

SECTION 14: REPLACEMENT PARTS3714.3 Ignition Electrode and Flame Probe14.4 Heat ExchangerThe heat exchanger consists of a six-pass design with 1.5&quo

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL38 14.5 Flue Blower Vertical InstallationIT IS IMPORTANT THAT ONLY THE CORRECT

SECTION 14: REPLACEMENT PARTS3914.6 Pressure SwitchPull off 3 way connector. Spring open plastic clips of mounting cradle. Replace with correct type o

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL40 SECTION 15: SPECIFICATIONS15.1 Dimension DataModelUHD[X][S][R] 75UHD[X][S][R

SECTION 15: SPECIFICATIONS4115.2 General Technical Data Table*Do not exceed the maximum length of flue stated or heater may not operate properly. 15.3

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL42

SECTION 16: ROBERTS GORDON® COMBAT® UHD-SERIES WARRANTY43SECTION 16: ROBERTS GORDON® COMBAT® UHD-SERIES WARRANTYROBERTS GORDON® WILL PAY FOR:Within 24

TABLE OF FIGURESFigure 1: Clearances to Combustibles ... 3Figure 2: Air Flow Direction...

®OWNER WARRANTY REGISTRATION CARDAbout the Owner:Name:________________________________________________________________________________________________

WARNING© 2008 Roberts-Gordon LLC www.rg-inc.com

SECTION 1: HEATER SAFETY1SECTION 1: HEATER SAFETYYour Safety is Important to Us!This symbol is used throughout the manual to notify you of possible fi

UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL2 SECTION 2: INSTALLER RESPONSIBILITYThe installer is responsible for the follo

SECTION 3: CRITICAL CONSIDERATIONS3SECTION 3: CRITICAL CONSIDERATIONS3.1 Basic InformationUHD[X][S][R] heaters have automatic ignition burners for ON/