Lochinvar 51-211 operation manual Near boiler piping connections, Circulator sizing

Page 37

Installation & Operation Manual

6 Hydronic piping (continued)

Near boiler piping connections

Figure 6-1ANear Boiler Piping w/Y-Strainer

Figure 6-1BNear Boiler Piping w/Low Loss Header

VENT AIR

VENT

AIR

CONDENSATE DRAIN

		DOMESTIC HOT
		WATER PUMP
	M
O

CONDENSATE

DRAIN

BOILER

PUMP

TO FLOOR

DRAIN

Y-STRAINER (RECOMMENDED)

M

E

ST

MSY

O

R

F

FROM	INDIRECT
FROM	DOMESTIC
	HOT WATER
		TANK
TO			M
			M
			E
			T
			S
DOMESTIC			Y
DOMESTIC			S
HOT WATER			O
HOT WATER			T
PUMP
			SYSTEM
			PUMP
			SYSTEM
			SENSOR

AIR

SEPARATOR

EXPANSION TANK

TO FLOOR

DRAIN

BOILER

PUMP

Y-STRAINER (RECOMMENDED)

LOW LOSS HEADER (TYPICAL)

R	INDIRECT
F	INDIRECT
	DOMESTIC
	HOT WATER
O	TANK
T		EM
		EM
		ST		EM
	Y			EM
	S			ST
	O		Y
	T		S
		M
		O
SYSTEM		R
SYSTEM		F
SENSOR
AIR
SEPARATOR
AIR VENT
VALVE	SYSTEM PUMP
	SYSTEM SENSOR
	AIR SEPARATOR
	FILL VALVE
	EXPANSION TANK
DRAIN (TYPICAL)
DRAIN VALVE

Circulator sizing

The Knight wall mount boiler heat exchanger does have a pressure drop, which must be considered in your system design. Refer to the graph in FIG. 6-2 for pressure drop through the Knight wall mount boiler heat exchanger.

37

Image 37

Contents Models 51 Contents Please read before proceeding When servicing boilerStainless steel heat exchanger Gas connection pipe Knight Wall Mount Boiler How it worksModels 51 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 contaminationProducts to avoid When using an existing vent system to install a new boilerAreas likely to have contaminants When removing a boiler from existing common vent system Remove boiler from wood pallet Prepare boilerGas 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 ventingDirect venting options Vertical Vent Air intake/vent connections Install vent and combustion air pipingSizing Requirements for installation in CanadaLength Air inlet pipe materials MaterialsAir contamination Optional room airModel Kit Number Vent fittings Material StandardPrimer Centrotherm InnoFlue SW PolypropyleneApproved Stainless Steel Vent Manufacturers Make Model Stainless steel ventFlue Flue Intake Air Adapter TerminationSidewall direct venting If using the alternate sidewall terminationVent/air termination sidewall Determine location2AClearance to Gravity Air Inlets Prepare wall penetrations Alternate Field Supplied Option Prepare wall penetrations5AMultiple Vent Terminations must also comply with -1A Multiple vent/air terminationsSidewall termination optional concentric vent Sidewall termination installationDescription and usage Sidewall termination optional concentric vent models 8Concentric Vent Dimensional DrawingMultiventing sidewall terminations 10Concentric Vent Sidewall AttachmentVent/air termination vertical Vertical direct venting2Vertical Terminations with Multiple Boilers Prepare roof penetrationsVertical termination optional concentric vent Vertical termination installationMinimum Combustion AIR Typical Multiventing vertical terminationsConcentric Venting Arrangement Alternate vertical concentric ventingAIR Inlet Flue Exhaust Seal CAP Existing Flue Outlet 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 connectionsArmstrong Pump Size GrundfosVariable speed pump setup Smart System / Multi-temperature loop control optionVariable speed pump option 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 Gas connections Connecting gas supply pipingPropane Gas Natural gasCheck inlet gas supply Natural Gas Pipe Capacity ChartLength of Pipe in Straight Feet for 1/2 PSI Gas Pressure Gas valve replacementInstallation must comply with Field wiringLine voltage connections Low voltage connectionsLouver proving switch Outdoor temperature sensorFlow switch ThermostatWiring of the cascade Alarm contactsSystem supply sensor Boiler management system4Low Voltage Field Wiring Connections Condensate drain Condensate disposalStart-up Freeze protection when usedCheck/control water chemistry Fill and test water systemCheck for gas leaks Check thermostat circuits Clean/Inspect Trap AssemblyInspect/fill condensate system Inspect/check condensate lines and fittingsStart the boiler Final checks before starting the boilerIf boiler does not start correctly Check system and boiler2Operating Instructions Natural Gas Propane Set space heating operationConfiguration of the cascade Verify DHW modeSet domestic hot water DHW operation General Operating informationHow the boiler operates How the control module operatesProtection features Temperature controlBoiler temperature regulation Cascade Outdoor reset operation, if usedOperation Display Sequence of operationInstaller Access modesUser 1Control Panel Knight wall mount boiler control moduleCall for Heat Operating information Dial Function Service technician Maintenance Maintenance and annual startupOwner maintenance Maintenance Check all boiler wiring Check ignition ground wiringCheck control settings Check expansion tankCleaning boiler heat exchanger Check flame signalReview with owner Oiled bearing circulators Heat Exchanger Cleaning KitsPC Interface Diagrams2Wiring Diagram

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