Lochinvar 51-211 operation manual 5Single Boiler Multiple Temperatures

Page 42

Installation & Operation Manual

6 Hydronic piping

Figure 6-5Single Boiler - Multiple Temperatures

	PRESSURE	TEMPERATURE	TEMPERATURE	TEMPERATURE
BACKFLOW	REDUCING VALVE	LOOP #1	LOOP #2	LOOP #3
PREVENTER				MIXING VALVES
	PRESSURE			(TYPICAL)
	GAUGE

MAKE

UP

WATER

SYSTEM

SUPPLY

SENSOR

AIR SEPARATOR

		EXPANSION		WIRES
		TANK		TO LOOP
		MAY SUBSTITUTE		SENSORS
		MAY SUBSTITUTE
		LOW LOSS HEADER		24V SIGNAL TO
				24V SIGNAL TO
		NOT TO EXCEED 4 PIPE DIA		MIXING VALVES
	BALL VALVE	OR MAX. OF 12" APART
	(TYPICAL)
		BOILER		MULTI-TEMP
	DRAIN POINT	BOILER	120VAC TO PUMPS	LOOP CONTROL
	DRAIN POINT	CIRCULATOR	120VAC TO PUMPS	LOOP CONTROL
	(TYPICAL)	CIRCULATOR	DOMESTIC	(OPTIONAL)
	(TYPICAL)		DOMESTIC	(OPTIONAL)
	Y-STRAINER	FLOW CHECK	HOT WATER	HOT WATER
		FLOW CHECK	CIRCULATOR	HOT WATER
		VALVE	CIRCULATOR	OUT
	(RECOMMENDED)	VALVE		OUT
	(RECOMMENDED)			ANTI-SCALD
				MIXING VALVE
				COLD
				WATER
		SHIELDED CABLE TO		IN
		SHIELDED CABLE TO
			BOILER CONTROL
		UNION
		(TYPICAL)	DRAIN
		TEMPERATURE /	DRAIN
		TEMPERATURE /		IMG00187
		PRESSURE		IMG00187
		GAUGE

CAUTION

NOTICE

Mixing valves are required for the protection of low temperature loops.

Please note that these illustrations are meant to show system piping concept only, the installer is responsible for all equipment and detailing required by local codes.

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Image 42

Contents Models 51 Contents When servicing boiler Please read before proceedingKnight Wall Mount Boiler How it works Stainless steel heat exchanger Gas connection pipeModels 51 Ratings Knight Wall Mount Boiler Ahri RatingDetermine boiler location Installation must comply withCloset and alcove installations Before locating the boiler, check1Closet Installation Minimum Required Clearances Wall mounting location PrecautionsVent and air piping 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 concrete wall Mounting the boilerMounting to a wood studded wall Mounting to a metal studded wallGeneral venting Direct venting options Sidewall VentDirect venting options Vertical Vent Install vent and combustion air piping Air intake/vent connectionsRequirements for installation in Canada SizingLength Materials Air inlet pipe materialsOptional room air Air contaminationModel Kit Number Material Standard Vent fittingsPrimer Polypropylene Centrotherm InnoFlue SWFlue Stainless steel ventApproved Stainless Steel Vent Manufacturers Make Model Flue Intake Air Adapter TerminationVent/air termination sidewall If using the alternate sidewall terminationSidewall direct venting Determine location2AClearance to Gravity Air Inlets Prepare wall penetrations Prepare wall penetrations Alternate Field Supplied OptionMultiple vent/air terminations 5AMultiple Vent Terminations must also comply with -1ASidewall termination installation Sidewall termination optional concentric ventDescription and usage 8Concentric Vent Dimensional Drawing Sidewall termination optional concentric vent models10Concentric Vent Sidewall Attachment Multiventing sidewall terminationsVertical direct venting Vent/air termination verticalPrepare roof penetrations 2Vertical Terminations with Multiple BoilersVertical termination installation Vertical termination optional concentric ventMultiventing vertical terminations Minimum Combustion AIR TypicalAlternate vertical concentric venting Concentric Venting ArrangementExisting vent as a chase AIR Inlet Flue Exhaust Seal CAP Existing Flue OutletLow water cutoff device Hydronic pipingSystem water piping methods General piping information Chilled water systemNear boiler piping components Near boiler piping connections Circulator sizingPump Size Grundfos ArmstrongVariable speed pump option Smart System / Multi-temperature loop control optionVariable speed pump setup UP26-96 FC/VS IFC VS Stratos 1.25 3 x3Single Boiler Single Temperature Zoned with Circulators Number of Units 5Single Boiler Multiple Temperatures Required Pipe Sizes Model 8Single Boiler Zoned with Valves Model Number of Units 10Single Boiler Non-Zoned Primary/Secondary Piping Connecting gas supply piping Gas connectionsNatural gas Propane GasNatural Gas Pipe Capacity Chart Check inlet gas supplyLength of Pipe in Straight Feet for 1/2 PSI Gas valve replacement Gas PressureLine voltage connections Field wiringInstallation must comply with Low voltage connectionsFlow switch Outdoor temperature sensorLouver proving switch ThermostatSystem supply sensor Alarm contactsWiring of the cascade Boiler management system4Low Voltage Field Wiring Connections Condensate disposal Condensate drainCheck/control water chemistry Freeze protection when usedStart-up Fill and test water systemInspect/fill condensate system Clean/Inspect Trap AssemblyCheck for gas leaks Check thermostat circuits Inspect/check condensate lines and fittingsIf boiler does not start correctly Final checks before starting the boilerStart the boiler Check system and boiler2Operating Instructions Set space heating operation Natural Gas PropaneVerify DHW mode Configuration of the cascadeSet domestic hot water DHW operation How the boiler operates Operating informationGeneral How the control module operatesTemperature control Protection featuresBoiler temperature regulation Outdoor reset operation, if used CascadeSequence of operation Operation DisplayAccess modes InstallerUser Knight wall mount boiler control module 1Control PanelCall for Heat Operating information Dial Function Maintenance Maintenance and annual startup Service technicianOwner maintenance Maintenance Check control settings Check ignition ground wiringCheck all boiler wiring Check expansion tankCheck flame signal Cleaning boiler heat exchangerReview with owner Heat Exchanger Cleaning Kits Oiled bearing circulatorsDiagrams PC Interface2Wiring Diagram

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