Near boiler piping connections | Lochinvar 51-211 specification

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

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

Contents

Models 51 Contents Please read before proceeding When servicing boiler Stainless steel heat exchanger Gas connection pipe Knight Wall Mount Boiler How it works Models 51 Knight Wall Mount Boiler Ahri Rating Ratings Closet and alcove installations Installation must comply withDetermine boiler location Before locating the boiler, check 1Closet Installation Minimum Required Clearances Vent and air piping PrecautionsWall mounting location Prevent combustion air contamination Products 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 wall Direct venting options Sidewall Vent General ventingDirect venting options Vertical Vent Air intake/vent connections Install vent and combustion air piping Sizing Requirements for installation in CanadaLength Air inlet pipe materials Materials Air contamination Optional room airModel Kit Number Vent fittings Material StandardPrimer Centrotherm InnoFlue SW Polypropylene Approved Stainless Steel Vent Manufacturers Make Model Stainless steel ventFlue Flue Intake Air Adapter Termination Sidewall direct venting If using the alternate sidewall terminationVent/air termination sidewall Determine location 2AClearance to Gravity Air Inlets Prepare wall penetrations Alternate Field Supplied Option Prepare wall penetrations 5AMultiple Vent Terminations must also comply with -1A Multiple vent/air terminations Sidewall termination optional concentric vent Sidewall termination installationDescription and usage Sidewall termination optional concentric vent models 8Concentric Vent Dimensional Drawing Multiventing sidewall terminations 10Concentric Vent Sidewall Attachment Vent/air termination vertical Vertical direct venting 2Vertical Terminations with Multiple Boilers Prepare roof penetrations Vertical termination optional concentric vent Vertical termination installation Minimum Combustion AIR Typical Multiventing vertical terminations Concentric Venting Arrangement Alternate vertical concentric venting AIR Inlet Flue Exhaust Seal CAP Existing Flue Outlet Existing vent as a chase System water piping methods General piping information Hydronic pipingLow water cutoff device Chilled water system Near boiler piping components Circulator sizing Near boiler piping connections Armstrong Pump Size Grundfos Variable speed pump setup Smart System / Multi-temperature loop control optionVariable speed pump option UP26-96 FC/VS IFC VS Stratos 1.25 3 x 3Single 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 piping Propane Gas Natural gas Check inlet gas supply Natural Gas Pipe Capacity ChartLength of Pipe in Straight Feet for 1/2 PSI Gas Pressure Gas valve replacement Installation must comply with Field wiringLine voltage connections Low voltage connections Louver proving switch Outdoor temperature sensorFlow switch Thermostat Wiring of the cascade Alarm contactsSystem supply sensor Boiler management system 4Low Voltage Field Wiring Connections Condensate drain Condensate disposal Start-up Freeze protection when usedCheck/control water chemistry Fill and test water system Check for gas leaks Check thermostat circuits Clean/Inspect Trap AssemblyInspect/fill condensate system Inspect/check condensate lines and fittings Start the boiler Final checks before starting the boilerIf boiler does not start correctly Check system and boiler 2Operating Instructions Natural Gas Propane Set space heating operation Configuration of the cascade Verify DHW modeSet domestic hot water DHW operation General Operating informationHow the boiler operates How the control module operates Protection features Temperature control Boiler temperature regulation Cascade Outdoor reset operation, if used Operation Display Sequence of operation Installer Access modesUser 1Control Panel Knight wall mount boiler control module Call 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 tank Cleaning boiler heat exchanger Check flame signalReview with owner Oiled bearing circulators Heat Exchanger Cleaning Kits PC Interface Diagrams 2Wiring Diagram