Raypak 266A, 406A, 206A Burner Tray Removal, GAS Valve Removal, Main Burner and Orifice Removal

Page 39

BURNER TRAY REMOVAL -

ATMOSPHERIC MODELS

1.Shut off main electrical power switch to heater.

2.Shut off gas upstream of heater.

3.Remove front door.

4.Disconnect gas line from gas valve.

5.Remove (2) screws that mount burner tray to unit, and (2) screws that secure gas valve to jacket.

6.Disconnect wires that terminate at gas valve.

7.Disconnect hi-tension wire from PC board.

8.Slide out burner tray.

9.Reverse above procedure to reinstall.

GAS VALVE REMOVAL -

ATMOSPHERIC MODELS

1.Shut off gas supply to the heater. Remove gas piping to gas valve inlet.

2.Disconnect wires, pilot tubing and bleed line, if required.

3.Remove burner tray from heater.

4.Turn vertical gas pipe from manifold slightly and unscrew gas valve.

5.Reverse above procedure to reinstall.

MAIN BURNER AND ORIFICE REMOVAL -

ATMOSPHERIC MODELS

1.Remove burner tray.

2.Remove screws and burner hold-down bracket.

NOTE: If the heat exchanger is sooted badly, the burner hold-down bracket and spacer can become dis- torted from direct-flame impingement and this usually necessitates replacement of these parts.

3.Lift burners from slotted spacers and slide from ori- fices. Clean with a wire brush.

4.Orifices usually do not need to be replaced. To clean, run either copper wire or wood toothpick through orifice. Do not enlarge hole. To remove orifice, use a socket wrench and remove from manifold. DO NOT overtighten when reinstalling.

 

GAS VALVE

 

PILOT

BURNER

GAS

 

ORIFICE

BURNER

HOLD-DOWN

BRACKET

PILOT REMOVAL AND CLEANING

1.Disconnect pilot tubing and wires from gas valve.

2.Remove pilot assembly from burner tray.

3.Remove pilot from bracket.

4.Remove pilot orifice and air opening (Honeywell MV unit only), and clean with wire or small brush.

CAUTION! Do not enlarge hole in pilot orifice.

5. Reverse above procedure to reinstall.

HONEYWELL MILLIVOLT

ROBERTSHAW MILLIVOLT

PILOT

PILOT

Pilot

Pilot

Air

Opening

Orifice

Orifice

Fig. # 8045.1

Fig. # 8102.0

HEAT EXCHANGER REMOVAL

1.Shut water, gas and electricity off, close valves and relieve pressure, then remove relief valve. Remove side inspection panels.

2.Remove top jacket holding screws.

3.Remove rear top panel.

4.Remove screws mounting the rain shield to the rear panel. Also remove the screws that mount the rain shield to the sway brace. Remove rain shield.

5.Remove the four (4) screws holding down the flue collector. Remove the flue collector.

6.Disconnect flange nuts on Inlet/Outlet header, loosen union(s) at gas pipe and slide heater away from piping.

7.Lift heat exchanger straight up using caution not to damage refractory.

8.Reverse above procedure to reinstall. Make sure the insulation strips are properly replaced on top of the refractory retainer.

39

Page 38 Page 40
Image 39
Page 38 Page 40
Contents What to do if YOU Smell GAS Installation and Operating InstructionsMaximum Water ChemistryContents START-UP Procedures For Your Safety Read Before OperatingBefore START-UP Burners Water Millivolt System Automatically Lighted Pilot Operating Instructions and SHUT-OFF ProceduresSHUT-OFF Procedures Electronic Ignition SystemWater Pressure Switch After START-UPVisual Inspection Atmospheric Heaters Pool & SPA Water Chemistry Maintenance and Care ProceduresSee plumbing diagram If Heater will not FireImportant Freeze Information Cold Weather OperationWinterizing the Pool & SPA Heater Receiving Equipment Part TWO Installation and Service InstructionsCode Requirements General SpecificationsInstallation Instructions Important NoticeALL Heaters Outdoor InstallationOutdoor Heater Installation Clearances10 ft Wind Speed = 150 MPH, 3 Second Gust Exposure = C Florida Building CodeOutdoor Stack Indoor Stack Indoor Heater InstallationAtmospheric Units Specifications and DimensionsLow NOx Units Vent Piping Power Vent Kit Model Part NoCombustion and Ventilation AIR Indoor Units Only Model Square InchesGAS Supply Connections B149.1 and B149.2GAS Pressure Adjustment Locations GAS Pressure RegulatorPipe Sizing for GAS Connections Plumbing for Water Connections Flow RatesPolymer Headers Cast Iron Headers Asme Unitherm Governor Operation INLET/OUTLET Header PolymerCast Iron Headers Asme Models INLET/OUTLET Header AsmeExternal Auxiliary Bypass Valve Auxiliary Bypass Valve AdjustmentCast Iron Header Asme Models Fig. #4 Heat Exchanger Reversal Procedure Standard ModelsAtmospheric Electrical WiringMillivolt Models Digital ModelsTransformer Wiring VAC Wiring 120V Atmospheric Heater240V Atmospheric Heater Wiring Diagram Millivolt Mechanical Thermostat Wiring Diagram Digital Models Atmospheric Wiring Diagram Digital Models LOW NOx Servicing Instructions General Location of Controls AtmosphericLOW NOx Control Adjustments Digital Models Control Adjustments Millivolt ModelsControl Panel Removal Thermostat Control Operation Digital Thermostat ControlsCfff Fahrenheit to Celsius SETdef Default SettingsRESfl Reset Fault History Program ButtonDisplay Definition Diagnostics Reading a FaultFault Codes Status Codes Program ModesRemote Control Installation and Operation Remote OperationActivating the Remote Wire Remote Control On-Off Remote Control WiringHigh Limits Flame ROLL-OUT Safety SwitchPilot Safety Millivolt Models Pilot Safety Digital ModelsMain Burner and Orifice Removal Pilot Removal and CleaningBurner Tray Removal GAS Valve RemovalUnitherm Governor U.G. Replacement Tube Cleaning ProcedureDesooting Procedure Immersion Well ReplacementVisual Inspection Blower AdjustmentLOW NOx Pool Heaters OperationCombustion Blower Removal Pilot RemovalMechanical TroubleshootingPage For qualified technicians only Electrical Electronic Ignition IIDYES Digital Control Logic Flow ChartReplacement Parts ManufacturerEastman Avenue OXNARD, CA Atmospheric Heaters LOW NOx Heaters IID LOW NOx Pilot Call OUT Description Call OUT Description Sheetmetal Call OUT Description 267A
Top Page Image Contents