Raypak 407A Combustion and Ventilation AIR Indoor Units Only, Model Square Inches, Vent Piping

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COMBUSTION AND VENTILATION AIR (Indoor Units Only)

The heater must have both combustion and ventilation air. Minimum requirements for net free air supply open- ings are one opening that is 12 inches from the ceiling for ventilation, and one opening that is 12 inches from the floor for combustion air as outlined in the latest edition of the National Fuel Gas Code, ANSI Z223.1(Canada- CAN/CGA-B149.1 and B149.2) and any local codes that may have jurisdiction.

A.All Air From Inside The Building:

Each opening shall have a minimum net free area as noted:

Model

Square Inches

Model

Square Inches

 

 

 

 

206/207

200

336/337

333

 

 

 

 

266/267

266

406/407

399

 

 

 

 

B.All Air From Outdoors:

When air is supplied directly from outside of build- ing, each opening shall have a minimum net free area as noted:

Model

Square Inches

 

 

206/207

50

 

 

266/267

67

 

 

336/337

84

 

 

406/407

100

 

 

CAUTION: Combustion air must not be contaminated by corrosive chemical fumes which can damage the heater and void the warranty.

VENT PIPING

WARNING: Indoor heaters require a drafthood that must be connected to a vent pipe and properly vented to the outside. Failure to follow this procedure can cause fire or fatal carbon monoxide poisoning.

Vent piping the same size as the drafthood outlet is recommended, however, when the total vent height is at least 10 ft (drafthood relief opening to vent terminal), the vent pipe size may be reduced as specified in Chapter 10 of the National Fuel Gas Code, ANSI Z223.1 (Canada - CAN/CGA-B149.1 and B149.2). As much as pos- sible, avoid long horizontal runs of vent pipe and too many elbows. If installation requires horizontal runs, the vent pipe must have a minimum of 1/4 in. per ft rise and should be supported at not more than five foot inter- vals. Plumbers tape, criss-crossed, will serve to space both horizontal and vertical piping. Gas vents support- ed only by the flashing and extending above the roof more than five feet should be securely guyed or braced to withstand snow and wind loads. We recommend use of insulated vent pipe spacers through the roofs and walls. Another option for installation that requires horizontal runs is using the D-2 power vent kit option.

Power Vent Kit

Model Part No.

206/207 009832

266/267 009832

336/337 009833

406/407 009833

Optional Raypak D-2

 

Power Vent

Fig.# 9469

For more information consult the D-2 Power Vent manual, (Catalog No. 6000.57.1).

The power vent assembly is a fan-assisted combustion system designed for application to models 206-407. The unit, when installed as directed, is capable of operating in applications such as through-the-wall venting and reduced horizontal and vertical vent pipe sizes in new and current installations. The unit is factory-wired for 240 VAC, with capability of rewiring for 120 VAC.

For protection against rain or blockage by snow, the vent pipe must terminate with a vent cap which complies with the local codes or, in the absence of such codes, to the latest edition of the National Fuel Gas Code, ANSI

Z223.1 (Canada - CAN/CGA-B149.1 and B149.2).

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Contents Installation and Operating Instructions What to do if YOU Smell GASWater Chemistry MaximumContents START-UP Procedures For Your Safety Read Before OperatingBefore START-UP Burners Water Millivolt System Electronic Ignition System Operating Instructions and SHUT-OFF ProceduresSHUT-OFF Procedures Automatically Lighted PilotWater Pressure Switch After START-UPVisual Inspection Atmospheric Heaters If Heater will not Fire Maintenance and Care ProceduresSee plumbing diagram Pool & SPA Water ChemistryImportant Freeze Information Cold Weather OperationWinterizing the Pool & SPA Heater Part TWO Installation and Service Instructions Receiving EquipmentImportant Notice General SpecificationsInstallation Instructions Code RequirementsClearances Outdoor InstallationOutdoor Heater Installation ALL Heaters10 ft Florida Building Code Wind Speed = 150 MPH, 3 Second Gust Exposure = CIndoor Heater Installation Outdoor Stack Indoor StackSpecifications and Dimensions Atmospheric UnitsLow NOx Units Model Square Inches Power Vent Kit Model Part NoCombustion and Ventilation AIR Indoor Units Only Vent PipingB149.1 and B149.2 GAS Supply ConnectionsGAS Pressure Adjustment Locations GAS Pressure RegulatorPipe Sizing for GAS Connections Plumbing for Water Connections Flow RatesPolymer Headers Cast Iron Headers Asme INLET/OUTLET Header Asme INLET/OUTLET Header PolymerCast Iron Headers Asme Models Unitherm Governor OperationAuxiliary Bypass Valve Adjustment External Auxiliary Bypass ValveCast Iron Header Asme Models Heat Exchanger Reversal Procedure Standard Models Fig. #4Digital Models Electrical WiringMillivolt Models AtmosphericTransformer 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 Digital Thermostat Controls Thermostat Control OperationProgram Button SETdef Default SettingsRESfl Reset Fault History Cfff Fahrenheit to CelsiusStatus Codes Program Modes Diagnostics Reading a FaultFault Codes Display DefinitionRemote Control Installation and Operation Remote OperationActivating the Remote Remote Control Wiring Wire Remote Control On-OffPilot Safety Digital Models Flame ROLL-OUT Safety SwitchPilot Safety Millivolt Models High LimitsGAS Valve Removal Pilot Removal and CleaningBurner Tray Removal Main Burner and Orifice RemovalImmersion Well Replacement Tube Cleaning ProcedureDesooting Procedure Unitherm Governor U.G. ReplacementOperation Blower AdjustmentLOW NOx Pool Heaters Visual InspectionPilot Removal Combustion Blower RemovalTroubleshooting MechanicalPage Electrical Electronic Ignition IID For qualified technicians onlyDigital Control Logic Flow Chart YESReplacement 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