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Roberts Gorden 75, 100, 125 service manual Electrical Connection to the Heater

Models: 125 100 75

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SECTION 10: WIRING

10.5 Electrical Connection to the Heater

Burner

Connect wires together with suitable approved wire connectors.

Green to Ground

White to L2

Black to L1

Flexible Conduit

BX Connector

	L1	Junction Box
	L2	Junction Box
	L2
	Ground

Black

White

Green

IMPORTANT: Junction box is not provided with heater.

Conduit can also be attached directly to heater with wire junction made within the heater cabinet.

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Roberts Gorden 75, 100, 125 service manual Electrical Connection to the Heater

Contents

Models UHDXS UHD-Series Tubular Duct Furnace Low Profile RangeCombat If you smell gasPage Manuel d’installation, d’operation, et de service Modèles UHDXSCombat AVERTISSEMENTPage 2012 Roberts-GordonLLC Page TABLE OF FIGURES Page 1.1 Manpower Requirements SECTION 1 HEATER SAFETY1.2 Safety Labels and Their Placement 1.3 California PropositionFigure 1 UHDXS 75 Label Placement For separated combustion units only2 of Figure 2 UHDXS 100-125Label Placement CombatCombatby 2.1 Wall Tag SECTION 2 INSTALLER RESPONSIBILITY2.2 Corrosive Chemicals 2.3 National Standards and Applicable CodesSECTION 3 CRITICAL CONSIDERATIONS 3.4 Minimum Required Installation Clearances3.1 Basic Information 6, Figure 3 for detailsFire Hazard 4.2 Clearances to CombustiblesFigure 3 Clearances to Combustibles 5.2 Aircraft Hangars 5.1 Gas Codes5.3 Parking Structures and Repair Garages 5.4 Electrical5.6 High Altitude 6.1.2 Temperature Rise and Pressure Drop Ranges SECTION 6 DUCT HEATER INSTALLATION 6.1 General6.1.3 Air Flow and Temperature Rise Ranges 6.1.1 Minimum Inlet Duct LengthCrush Hazard Use 3/8 threaded rod minimum 6.2 Shelf Mounting and Suspension6.3 Wall Mounting Figure 5: Suspension MethodsFigure 7 Wall Shelf Mounting and Suspension Figure 6 Shelf-MountingMethodsExisting cabinet screws must be re-used 11 of7.3 Vent Installation Heaters may be installed vented or unventedSECTION 7 VENTING Carbon Monoxide Hazard7.4 Unvented Operation 7.3.1Standard Vented Heaters Models UHDX7.5 Horizontal Venting 7.6 Vertical Venting7.7.1 Maximum Vent Lengths 7.8 Vent MaterialFigure 8 Vent and Roof Detail Model 15 ofUHDX 90502102Requirements 17 of Figure 12 Concentric Vent BoxDescription 18 ofPart Number Concentric Vent Kit8.2 Unvented Installation 8.1 Separated Combustion InstallationSECTION 8 AIR SUPPLY Explosion HazardSECTION 9 GAS PIPING Fire Hazard Gas can leak if not installed properlyConnect gas supply according to Figure 9.1 ConnectionsFigure 14 Gas Connection when attaching flexible gass connectorProduct Damage Hazard Hold gas nipple securely with pip wrench10.2 Low Voltage Thermostat with One Heater SECTION 10 WIRING10.1 Positioning Thermostats DANGER10.3 UHDXS Series Internal Wiring Diagram 10.4 UHDXS Series Ladder Wiring Diagram 10.5 Electrical Connection to the Heater heater before service SECTION 11 OPERATION AND MAINTENANCEbefore service during installationFigure 16 Gas Valve for Models UHDXS Figure 15 Automatic Burner Control SequenceEND VIEW before a one hour lockoutCheck Gas Rate 11.2.3 Pressure Switch11.2.4 Turning Off the Heater 11.2.5 External ControlsThe fault must be traced and repaired 12.2.1 Manual Reset Limit SwitchSECTION 12 USER INSTRUCTIONS 12.1 Heater Operation12.4 Simple Troubleshooting Figure 17 Manual Reset Limit Switch12.4.1 Simple Troubleshooting Burner Faults Figure 18 LED Diagnostic Codes13.3 Heat Exchanger Maintenance 13.2 Burner Maintenance13.4 Gas Valve Maintenance SECTION 13 SERVICINGInstallation Code and Annual Inspections 13.7 Maintenance ChecklistAnnual Fall Start-up The Vicinity of the HeaterCombustion Air Intake when installedPipe Heat Exchangerheater before service SECTION 14 TROUBLESHOOTINGbefore service during installation35 of 14.1GeneralTROUBLESHOOT ENDS. No 36 of14.3 Troubleshooting for Flame Supervision System 14.4 Troubleshooting for Gas Valves 14.5 Troubleshooting for Flue Blower38 of Burner Components SECTION 15 REPLACEMENT PARTS15.1 Gas Valve DANGER15.2.1 Burner Injectors 15.2 Burner CompartmentEnsure gas tight fitting of injectors Ensure correct alignment with burners15.4 Heat Exchanger 15.3 Ignition Electrode and Flame Probe15.5 Flue Blower Vertical Installation 15.8 Limit Switches 15.6 Pressure Switch15.8.1 Removal and Replacement 15.7 Ignition Control44 of SECTION 16 SPECIFICATIONS 16.1 Dimension Data16.2 General Technical Data Table 16.3 Technical Data Table45 of 46 of ROBERTS-GORDONLLC WILL PAY FOR WARRANTY IS VOID IFROBERTS-GORDONLLC WILL NOT PAY FOR Roberts-GordonLLCPage OWNER WARRANTY REGISTRATION CARD Mail or Fax toAbout the Installer Purchased From if different than installerPage