Raypak 992B-1262B manual Direct Vent Horizontal Through- the-Wall, Venting

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	Model	Certified		Maximum	Combustion	Air Inlet
		Certified		Maximum	Air	Max. Length*
		Venting	Vent Size	Equivalent	Air	Max. Length*
	No.	Material		Vent Length*	Intake Pipe	10”	12”
		Material		Vent Length*	Material



	992B		10”
				70’		75’	100’
	1262B		12”	70’	Galvanized	75’	100’
				Room Air
	1532B			Room Air
	1532B				Steel,
				40’	Steel,
	1802B	Category III		40’	PVC,
			14”	Ducted	ABS,
	2002B			Ducted	ABS,
	2002B			Combustion	CPVC	40’	75’

	2072B
	2072B			Air

	2342B		16”

* Subtract 10 ft per elbow. Max. 3 elbows.

Maximum combustion air duct length terminated at 100 equivalent ft.

Table L: Category III Horizontal and Direct Venting

Use only the special gas vent pipes listed for use with Category III gas burning heaters, such as the AL29-4C stainless steel vents offered by Heat Fab Inc. (800- 772-0739), Protech System, Inc. (800-766-3473), Z-Flex (800-654-5600) or American Metal Products (800-423-4270). Pipe joints must be positively sealed. Follow the vent manufacturer’s installation instructions carefully.

Direct Vent - Horizontal Through- the-Wall

Note: When vertical height exceeds 25 ft,

consult factory prior to installation.

Fig. 29: Direct Vent - Horizontal Through-the-Wall

Installation

These installations utilize the heater-mounted blower to draw combustion air from outdoors and vent com- bustion products to the outdoors.

The total length of the through-the-wall flue cannot exceed 40 equivalent ft in length for the flue outlet. Each elbow used is equal to 10 ft of straight pipe. This will allow installation in one of the three following arrangements:

•40’ of straight flue pipe

•30’ of straight flue pipe and one elbow

•20’ of straight flue pipe and two elbows.

The total length of air supply pipe cannot exceed the distances listed in Table L. Each elbow used is equal to 10 ft of straight pipe. This will allow installation in any arrangement that does not exceed the lengths shown in Table L.

The flue direct vent cap is not considered in the over- all length of the venting system.

Care must be taken during assembly that all joints are sealed properly and are airtight.

The vent must be installed to prevent the potential ac- cumulation of condensate in the vent pipes. It is required that:

1.The vent must be installed with a slight downward slope of not more than 1/4 inch per foot of hori- zontal run to the vent terminal.

2.The vent must be insulated through the length of the horizontal run.

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Contents Installation & Operating Instructions Page Contents Pay Attention to These Terms Model Identification Before InstallationInstallations at Elevation Product ReceiptComponent Locations Back Component LocationsModel Burners per Valve Stages Fire at Stage General InformationModel Quantity Vent Size Gas Burners Blowers ValvesTime/Temperature Relationships in Scalds General SafetyWater Time to Produce Serious Temp Burn Stacking InstallationInstallation Codes Equipment BaseTable D Vent/Air Inlet Termination Clearances Outdoor Installations Indoor InstallationsClearances Direct Vent Combustion and Ventilation AirIndoor Units Reversing Air FilterAll Air from Inside the Building InstallationsConventional Combustion Air Supply TruSeal Combustion AirReversing Water Connections Canadian InstallationsWater Piping GeneralCold Water Operation Relief Valve Piping Hydrostatic TestHydronic Heating Temperature & Pressure GaugePump Selection Three-Way Valves Pressure Drop in Feet of Head Feedwater RegulatorPiping Air-Separation/Expansion TankPool Heating Potable Water and Space HeatingWinterizing Your Heater Automatic Chlorinators and Chemical FeedersTotal Dissolved Solids Gas SupplyPool/Spa Water Chemistry Water Hardness PH of WaterTable I Maximum Equivalent Pipe Length Gas Supply ConnectionReversing Gas Supply Connection ModelField-Connected Controllers Electrical Power ConnectionsCheck the Power Source Gas Supply PressureMaking the Electrical Connections Field Wiring ConnectionOn-Off Wiring Connections Appliance Categories VentingFlue Exhaust Tee Model Diameter Order NumberCertified Combustion Air Support of Vent StackVent Terminal Location Combustion ExhaustCanadian Installations InstallationsChanging the Flue Outlet Natural Draft Vertical Venting Category Venting Installation TipsVenting Configurations InstallationHeight TerminationCommon Venting System Certified Vertical Venting Combustion Air Air Inlet ModelHorizontal Through-the-Wall Venting Category Horizontal Through-the-Wall Venting CategoryEquivalent Material Vent Length Intake Pipe Direct Vent Horizontal Through- the-WallModel Certified Maximum Combustion Air Inlet VentingDirect Vent Vertical Direct Vent VerticalControls Outdoor InstallationFreeze Protection Models 992B-1262B Heater Sequence of OperationExternal Lights Color Indication Models 1532B 1802B Page Page Models 2002B 2342B Page Page Operating Control High Limit Manual ResetFlow Switch Ignition ModuleLow Water Cut-Off Optional High and Low Gas Pressure SwitchesUDB Fault History UDB Diagnostic BoardWater Piping 87%-Efficiency Boilers Special InstructionsVenting Appliance Categories Vent Terminal Location Vertical Venting CategoryCondensate Management Equivalent Certified Maximum Combustion Air Air Inlet Model VentingMax. Length Material Vent Length Direct Vent Horizontal Through- the-Wall 992BE 75’ 100’ 1262BE Galvanized Steel 1532BE Category 25’ Wiring Diagram Models 992B-1262B Wiring Diagram Models 1532B-2342B Pre Start-up START-UPMain Burner Adjustment Blower AdjustmentStart-Up Pilot Turn-Down Test Safety InspectionLeak Test Procedure Dual-Seat Gas Valves Follow-UpLeak Test Post Start-Up CheckLighting Instructions OperationTo Turn Off Gas To Appliance Step TroubleshootingSuggested Minimum Maintenance Schedule MaintenancePreventive Maintenance Schedule As Required WeeklySemi-Annually AnnuallyInside Air Contamination AppendixLimited Parts Warranty HI Delta Types H and WH Limited Parts Warranty HI Delta Type P START-UP Checklist for FAN-ASSISTED Raypak Products Page