Manuals / Roberts Gorden / Household Appliance / Furnace

Roberts Gorden 100, 75, 125 service manual Ignition Electrode and Flame Probe, Heat Exchanger

Models: 125 100 75

1 60

Download 60 pages 21.77 Kb

Page 49

15.3 Ignition Electrode and Flame Probe

SECTION 15: REPLACEMENT PARTS

15.3 Ignition Electrode and Flame Probe

		Inshot
		Burners
Manual Reset
Limit Switch
(Position may vary.)
		Flame
	Flame	Probe
	Flame
	Probe
Limit
Switch
		Burner Compartment
Ignition		Front Views
Electrode
		Ignition
		Electrode

.120 (3 mm) spark

gap

Inshot

Burners

To replace the electrode or flame probe, remove the electrical lead and screw.

Pull out from mounting. Refit in reverse ensuring that the gap to burner is as shown in the front view of the burner compartment.

Description	Part Number	Qty
Spark Electrode	90427411	1
Automatic Ignition Flame Probe	90439300	1
Transformer	90436900K	1
Ignition Module	90434008	1
Inshot Burners UHD[X][S] 75	92000002	5
Inshot Burners UHD[X][S] 100	92000002	6
Inshot Burners UHD[X][S] 125	92000002	7
Limit Switch	90412104	1
Manual Reset Limit Switch (75 only)	90412106	1

15.4 Heat Exchanger

The heat exchanger consists of a six-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].

41 of 47

Image 49

Roberts Gorden 100, 75, 125 service manual Ignition Electrode and Flame Probe, Heat Exchanger

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 PropositionFor separated combustion units only Figure 1 UHDXS 75 Label Placement2 of Combat Figure 2 UHDXS 100-125Label PlacementCombatby 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 details4.2 Clearances to Combustibles Fire HazardFigure 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 Venting7.8 Vent Material 7.7.1 Maximum Vent LengthsFigure 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 14.5 Troubleshooting for Flue Blower 14.4 Troubleshooting for Gas Valves38 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 Data16.3 Technical Data Table 16.2 General 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