Lochinvar WH 55-399 operation manual Stainless steel vent

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3 General venting (continued)

Stainless steel vent

This product has been approved for use with stainless steel using the manufacturers listed in Table 3G.

WARNING Use only the materials, vent systems, and terminations listed in Tables 3G and 3H.

DO NOT mix vent systems of different types or manufacturers. Failure to comply could result in severe personal injury, death, or substantial property damage.

	NOTICE	The installer must use a specific vent starter
	NOTICE	adapter at the flue collar connection,
		supplied by the vent manufacturer to
		adapt to its vent system. See Table 3H for
		approved vent adapters. Discard CPVC
		starter piece.
		Installations must comply with applicable
	NOTICE	Installations must comply with applicable
	NOTICE	national, state, and local codes. Stainless
		steel vent systems must be listed as a
		UL-1738 approved system for the United
		States and a ULC-S636 approved system
		for Canada.

Installation & Operation Manual

NOTICE	Installation of a stainless steel vent
NOTICE	system should adhere to the stainless
	steel vent manufacturer’s installation
	instructions supplied with the vent
	system.

Figure 3-9Near Boiler Stainless Steel Venting

VENT

REPLACE APPLIANCE

SECURED CPVC ADAPTER

WITH APPROPRIATE

STAINLESS STEEL ADAPTER

FROM TABLE 3H

Table 3G Stainless Steel Vent Pipe and Fittings

Approved Stainless Steel Vent Manufacturers

Make	Model
Dura Vent (M & G Group)	FasNSeal Vent / FasNSeal Flex* Vent
Z-Flex (Nova Flex Group)	Z-Vent

Heat Fab (Selkirk Corporation)	Saf-T Vent

*Use of FasNSeal Flex smooth inner wall vent is to be used in vertical or near vertical sections only, taking precaution to ensure no sagging occurs of the vent system. Connect to the FasNSeal rigid vent using specially designed adapters and sealing method, see manufacturer’s instructions.

Table 3H Approved Stainless Steel (S.S.) Terminations and Adapters

		ProTech			Heat Fab				Z Flex
Model		FasNSeal				Saf-T Vent			Z-Vent
Model	Boiler	Flue	Intake	Boiler		Flue	Intake	Boiler	Flue	Intake Air
	Adapter	Termination	Air	Adapter		Termination	Air	Adapter	Termination	Termination
	Adapter	Termination	Termination	Adapter		Termination	Termination	Adapter	Termination	Termination
55 - 85	303005	FSBS3	303889	WH0002		9392	9314TERM	2SVAKA02	2SVSTP03	2SVSTEX0390
		FSRC3(R.C)				5300CI			2SVSRCX03
110 -285	303006			WH0003				2SVAKA03



399	303007	FSBS4	FSAIH04	WH0004		9492	9414TERM	2SVAKA04	2SVSTP04	2SVSTEX0490
399	303007	FSRC4(R.C)	303888	WH0004		5400CI	9414TERM	2SVAKA04	2SVSRCX04	2SVSTEX0490

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Contents Models WH 55 Contents Please read before proceeding When servicing boilerBoiler operation Boiler waterStainless steel heat exchanger Knight Wall Mount Boiler How it worksModels 55 Knight Wall Mount Boiler Ahri Rating RatingsCloset and alcove installations Installation must comply withDetermine boiler location Before locating the boiler, check1Closet Installation Minimum Required Clearances Vent and air piping PrecautionsWall mounting location Prevent combustion air contaminationWhen using an existing vent system to install a new boiler Products to avoidAreas likely to have contaminants When removing a boiler from existing common vent system Prepare boiler Remove boiler from wood palletGas conversions Mounting to a wood studded wall Mounting the boilerMounting to a concrete wall Mounting to a metal studded wallDirect venting options Sidewall Vent General ventingAir intake/vent connections Install vent and combustion air pipingSizing Requirements for installation in CanadaModel Kit Number Equivalent Vent Length Model Max Vent AirAir inlet pipe materials Materials Air contamination Optional room airMaterial Standard Approved PVC/CPVC Vent Pipe and FittingsVent pipe Vent fittingsModel PolypropyleneCentrotherm InnoFlue SW Duravent Polypro Stainless steel vent Sidewall direct venting If using the alternate sidewall terminationVent/air termination sidewall Determine location2AClearance to Gravity Air Inlets Prepare wall penetrations Model Air Vent Centerline WidthMultiple vent/air terminations Prepare wall penetrations Alternate Field Supplied OptionSidewall termination installation Sidewall termination optional concentric ventDescription and usage Sidewall termination optional concentric vent models 92 and 3 Concentric Vent Dimensional Drawing reference D onMultiventing sidewall terminations 12Concentric Vent Sidewall AttachmentVertical direct venting Vent/air termination verticalPrepare roof penetrations Vertical termination optional concentric vent Vertical termination installationMinimum Combustion AIR Typical Multiventing vertical terminationsVent / Air Inlet Size Minimum Existing Vent / Chase Size Alternate vertical concentric ventingConcentric Venting Arrangement Existing vent as a chaseSystem water piping methods General piping information Hydronic pipingLow water cutoff device Chilled water systemNear boiler piping components Circulator sizing Near boiler piping connections25F Temperature Rise Applications 20F Temperature Rise Applications35F Temperature Rise Applications Pump Size GrundfosSmart System / Multi-temperature loop control option Variable speed pump setupVariable speed pump option 3Single Boiler Primary / Secondary Piping Make UP Water Indirect Number of Units Boiler Member 8Single Boiler Multiple Temperature DHW Priority Model Required Pipe Sizes Boiler Make UP Boiler Gas connections Connecting gas supply pipingPropane Gas Natural gasNatural Gas Pipe Capacity Chart Check inlet gas supplyLength of Pipe in Straight Feet for 1/2 PSI Gas Pressure Gas valve replacementField wiring Installation must comply with Low voltage connectionsLine voltage connections Louver proving switch Outdoor temperature sensorFlow switch ThermostatWiring of the cascade Alarm contactsSystem supply sensor Boiler management systemFieldwiring InstallationCondensate drain Condensate disposalStart-up Freeze protection when usedCheck/control water chemistry Fill and test water systemCheck for gas leaks Inspect/fill condensate system Clean/Inspect Trap AssemblyCheck thermostat circuits Inspect/check condensate lines and fittingsStart the boiler Final checks before starting the boilerIf boiler does not start correctly Check system and boiler2Operating Instructions Models 55 Operating Instructions Model Natural Gas Propane Set space heating operationVerify DHW mode Configuration of the cascadeSet domestic hot water DHW operation General Operating informationProtection features Boiler temperature regulation Cascade Outdoor reset operation, if usedOperation Display Sequence of operationAccess modes InstallerUser 1Control Panel Knight wall mount boiler control moduleCall for Heat Information Dial Function Service technician Maintenance Maintenance and annual startupOwner maintenance See the following pages for instructions GeneralMaintenance Check all boiler wiring Check ignition ground wiringCheck control settings Flue vent system and air pipingCleaning boiler heat exchanger Check flame signalPerform start-up and checks Check burner flamePC Interface Diagrams2Wiring Diagram