Raypak 337A, 406A Transformer Wiring VAC Wiring, 120V Atmospheric Heater, 240V Atmospheric Heater

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TRANSFORMER WIRING

120 VAC WIRING

For 120 VAC input power to the unit, connect the black wire to the “L1” or hot leg of the power supply. Connect the white wire to the “Ret” or neutral leg of the power supply. Attach the wire nut to the red wire. There should be no connection to the red wire for 120 VAC operation. For Low NOx pool heaters attach a wire nut to each red wire independently.

120V ATMOSPHERIC HEATER

120V LOW NOx HEATER

SUPPLY

SIDE

HOT

L1

BLACK

RETURN

or

NEUTRAL WHITE

GROUND GREEN

BLACK

WHITE

HEATER

4 WIRES

GREEN

RED

SUPPLY

SIDE

 

HOT

BLACK

L1

 

BLACK

BLACK

 

RETURN

 

WHITE

 

 

or

WHITE

WHITE

NEUTRAL

 

 

HEATER

 

 

7 WIRES

 

GREEN

GREEN

RED

RED

Fig. #9471

240 VAC WIRING

For 240 VAC input power to the unit, connect the black wire to the “L1” or hot leg of the power supply. Connect the red wire to the “L2” or second hot leg of the power supply. Attach the wire nut to the white wire. There should be no connection to the white wire for 240 VAC operation. For Low NOx pool heaters attach a wire nut to each white wire independently.

240V ATMOSPHERIC HEATER

240V LOW NOx HEATER

SUPPLY

SIDE

HOT

L1

BLACK

HOT

L2

RED

GREEN

BLACK

RED

HEATER

4 WIRES

GREEN

WHITE

SUPPLY

SIDE

HOT

L1

BLACK

HOT

L2

RED

GROUND GREEN

BLACK

BLACK

RED

RED

HEATER

7 WIRES

GREEN

WHITE

WHITE

Fig. # 9471.1

Heater must be electrically grounded and bonded in accordance with local codes, or, in the absence of local codes, with the latest edition of the National Electrical Code, ANSI/NFPA 70. (Canada - Canadian Electrical Code, CSA C22.1, Part 1 and Part 2.)

NOTE: If the transformer’s primary side is wired for 120 VAC and 240 VAC is applied, damage to the transformer and PC board may result. Such damages are not covered under manufacturer’s limited warranty.

NOTE: Input power to the heater (120 or 240 VAC) can be supplied from the load (pump) side of time clock or directly from the GFCI power source. It is preferred to make connection to the load/pump side of the time clock. If using the switched GFCI power source, the heater could display false service indicators on the display panel if the pump is turned off.

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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