Manuals / Lochinvar / Household Appliance / Boiler

Lochinvar 51-211 20F Temperature Rise Applications, 25F Temperature Rise Applications, Ft/Hd

Models: 51-211

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Figure 6-2Pressure Drop vs. Flow - Models 51 - 211

Installation & Operation Manual

6 Hydronic piping

Figure 6-2Pressure Drop vs. Flow - Models 51 - 211

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Table 6A Circulator Recommendations for Temperature Rise Applications_20°, 25°, and 35°

				20°F Temperature Rise Applications
	Model	GPM	FT/HD	Minimum Pipe		Pump
	Model	GPM	FT/HD	Size	Grundfos	TACO	B & G	Armstrong
				Size	Grundfos	TACO	B & G	Armstrong
	51	5.1	11	1"	UPS26-99F	0011	NRF-36	E7
	81	7.5	24	1"	UPS26-99F	0011	NRF-36	E7
	106	9.8	27	1"	UPS26-99F	0013	NRF-36	E11
	151	14.0	20	1"	UPS26-99F	0011	NRF-36	E7
	211	19.6	29	1"	UPS32-160	1400-50	PL-55	E9

				25°F Temperature Rise Applications
	Model	GPM	FT/HD	Minimum Pipe		Pump
	Model	GPM	FT/HD	Size	Grundfos	TACO	B & G	Armstrong
				Size	Grundfos	TACO	B & G	Armstrong
	51	4.1	7.3	1"	UPS15-58FC	0014	NRF-36	E7
	81	5.9	15.0	1"	UPS15-58FC	0014	NRF-36	E7
	106	7.7	17.5	1"	UPS26-99F	0014	NRF-36	E7
	151	11.0	12.8	1"	UPS26-99F	0014	NRF-36	E7
	211	15.5	19.0	1"	UPS26-99F	0013	NRF-36	E7

				35°F Temperature Rise Applications
Model	GPM		FT/HD	Minimum Pipe		Pump
Model	GPM		FT/HD	Size	Grundfos	TACO	B & G	Armstrong
				Size	Grundfos	TACO	B & G	Armstrong
51	2.9		4.1	1"	UPS15-58FC	007	NRF-22	Astro-30
81	4.2		7.3	1"	UPS15-58FC	007	NRF-22	Astro-30
106	5.5		9.8	1"	UPS15-58FC	007	NRF-22	Astro-30
151	7.9		10	1"	UPS15-58FC	008/0010	NRF-36	Astro-30
211	11.0		10.1	1"	UPS15-58FC	0010	NRF-36	Astro-50
		Pumps listed in bold type are provided by the factory as the boiler circulation pump on standard altitude
NOTICE
		models.
		models.
NOTICE		Pumps listed in italicized type are provided by the factory as the boiler circulation pump on high altitude
		models.
		models.
NOTICE		The temperature rise provided by a pump/model combination will decrease by 3% per 1000 feet of elevation.

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Lochinvar 51-211 20F Temperature Rise Applications, 25F Temperature Rise Applications, 35F Temperature Rise Applications

Contents

Save this manual for future reference Installation & Operation Manual Models 51WBII-I-O Rev CAUTION CAUTION NOTICE Hazard definitionsDANGER ContentsPlease read before proceeding When servicing boilerInstallation & Operation Manual Boiler operation8. Boiler inlet temperature sensor 2. Combustion chamber access cover7. Boiler outlet temperature sensor housed with high limit sensor 9. Temperature and pressure gauge field installed, not shownFront View The Knight Wall Mount Boiler - How it works... continuedModels 51 Bottom ViewKnight Wall Mount Boiler AHRI Rating Other SpecificationsRatings Figure A High Altitude Label LocationClearances for service access Installation must comply withCloset and alcove installations 1 Determine boiler locationInstallation & Operation Manual Figure 1-1 Closet Installation - Minimum Required ClearancesFigure 1-2 Alcove Installation - Minimum Required Clearances 1 Determine boiler locationPrecautions Installation & Operation ManualResidential garage installation 1 Determine boiler location continuedProducts to avoid When using an existing vent system to install a new boilerTable 1A Corrosive Contaminants and Sources Areas likely to have contaminants1 Determine boiler location continued When removing a boiler from existing common vent systemInstallation & Operation Manual Remove boiler from wood pallet Figure 2-2 Gas Valve Power Switch & Venturi Removal2 Prepare boiler Gas conversionsMounting the boiler Figure 2-3 Installing Propane Orifice2 Prepare boiler continued Mounting to a wood studded wallDirect venting options - Vertical Vent 3 General ventingDirect venting options - Sidewall Vent for more detailsAir intake/vent connections Install vent and combustion air piping3 General venting continued Figure 3-6 Near Boiler Air PipingModel Requirements for installation in CanadaSizing 2 Max Vent/AirInstallation & Operation Manual MaterialsAir inlet pipe materials 3 General venting continuedTable 3C Optional Room Air Kit Optional room airAir contamination ModelApproved PVC/CPVC Vent Pipe and Fittings 2to 3 increaser are required to be CPVC when PVC/CPVC vent is usedFor installations using 2 vent, the first seven PVC/CPVCTable 3E Polypropylene Vent Pipe and Fittings PolypropyleneCentrotherm InnoFlue SW Approved Polypropylene Vent ManufacturersProTech Heat FabZ Flex Stainless steel ventVent/air termination - sidewall If using the alternate sidewall termination4 Sidewall direct venting Determine locationFigure 4-3A Clearance to Forced Air Inlets 4 Sidewall direct venting continuedFigure 4-2A Clearance to Gravity Air Inlets Vent/air termination - sidewallPrepare wall penetrations Figure 4-4B Polypropylene Sidewall Termination AssemblyFigure 4-4A PVC/CPVC Sidewall Termination Assembly Prepare wall penetrations Alternate - Field Supplied Option4 Sidewall direct venting continued Multiple vent/air terminationsInstallation & Operation Manual Sidewall termination - optional concentric vent Sidewall termination installationFigure 4-7 Kit Contents Description and usageSidewall termination - optional concentric vent models Figure 4-8 Concentric Vent Dimensional DrawingFigure 4-9 Rain Cap to Vent Pipe Alternate Assembly Installation & Operation ManualFigure 4-11 Concentric Vent and Combustion Air Termination Figure 4-10 Concentric Vent Sidewall AttachmentMultiventing sidewall terminations Installation & Operation ManualFigure 5-1B Stainless Steel Vertical Termination of Air and Vent 5 Vertical direct ventingVent/air termination - vertical Installation & Operation ManualFigure 5-3 Alternate Vertical Terminations with Multiple Boilers Prepare roof penetrationsFigure 5-2 Vertical Terminations with Multiple Boilers 5 Vertical direct venting5 Vertical direct venting continued Vertical termination installationFigure 5-5 Do Not Install U-Bend to Rain Cap Vertical termination - optional concentric ventFigure 5-7 Concentric Vent and Combustion Air Vertical Termination Figure 5-6 Concentric Vent Roof InstallationMultiventing vertical terminations Installation & Operation ManualMinimum Existing Alternate vertical concentric ventingVent / Air Inlet SizeInstallation & Operation Manual Existing vent as a chaseFigure 5-10 Existing Vent as a Chase 5 Vertical direct ventingGeneral piping information 6 Hydronic pipingSystem water piping methods Low water cutoff deviceNear boiler piping components 12. System temperature sensorTemperature and pressure gauge Boiler system pipingCirculator sizing 6 Hydronic piping continuedNear boiler piping connections Figure 6-1A Near Boiler Piping w/Y-Strainer35F Temperature Rise Applications 20F Temperature Rise Applications25F Temperature Rise Applications Figure 6-2 Pressure Drop vs. Flow - Models 51Variable speed pump setup Minimum Temperature RiseSMART SYSTEM / Multi-temperature loop control option Pump6 Hydronic piping Figure 6-3 Single Boiler - Single Temperature Zoned with CirculatorsInstallation & Operation Manual MAKE UP WATERRequired Pipe Sizes Number of UnitsModel Installation & Operation ManualWIRES Figure 6-5 Single Boiler - Multiple TemperaturesInstallation & Operation Manual 24V SIGNAL TOInstallation & Operation Manual Figure 6-6 Multiple Boilers - Multiple TemperaturesRequired Pipe Sizes 6 Hydronic piping continuedNumber of Units Model6 Hydronic piping Required Pipe Sizes6 Hydronic piping continued Figure 6-8 Single Boiler Zoned with ValvesInstallation & Operation Manual BOILERInstallation & Operation Manual ModelFigure 6-9 Multiple Boilers Zoned with Valves 6 Hydronic piping6 Hydronic piping continued Figure 6-10 Single Boiler - Non-Zoned Primary/Secondary PipingInstallation & Operation Manual BOILERFigure 7-1 Gas Supply Piping Connecting gas supply piping7 Gas connections Natural gas Figure 7-2 Inlet Pipe with Backup Wrench7 Gas connections continued Propane GasCheck inlet gas supply Natural Gas Pipe Capacity ChartTable 7A Natural Gas Pipe Size Chart Length of Pipe in Straight Feet for 1/2 PSIFigure 7-3 Inlet Gas Supply Check Gas valve replacementGas Pressure Installation & Operation ManualFigure 8-2 Line Voltage Field Wiring Connections 8 Field wiringInstallation must comply with Figure 8-3 Routing Field WiringLouver proving switch 8 Field wiring continuedOutdoor temperature sensor Flow switchSystem supply sensor Alarm contactsWiring of the cascade Boiler management systemInstallation & Operation Manual Figure 8-4 Low Voltage Field Wiring Connections8 Field wiring continued Figure 9-1 Condensate Disposal 9 Condensate disposalCondensate drain Installation & Operation ManualCheck/control water chemistry Freeze protection when used10 Start-up Fill and test water systemCheck thermostat circuits Clean/Inspect Trap AssemblyCheck for gas leaks Inspect/fill condensate systemIf boiler does not start correctly Final checks before starting the boilerStart the boiler Check system and boiler10 Start-up Figure 10-2 Operating InstructionsInstallation & Operation Manual Check flame and combustion continued Table 10A Flue Products ChartAdjust set point temperatures Set space heating operationSet domestic hot water DHW operation Set DHW boiler target temperatureConfiguration of the cascade Verify DHW modeGeneral 0 - 10V input set point or power11 Operating information How the boiler operatesRamp delay Temperature controlProtection features Outdoor air resetService reminder Boiler temperature regulationRun-time and alarm outputs Error loggingReset curve Outdoor reset operation, if usedTarget temperature with outdoor reset SWITCHING ON SEQUENCEDISPLAY Sequence of operationOPERATION Installation & Operation ManualSequence of operation continued Access modesInstaller User11 Operating information continued Knight wall mount boiler control moduleFigure 11-1 Control Panel Call for Heat IndicatorsBoiler Status Status Display ScreensInformation Installation & Operation Manual11 Operating information continued OperationalNAVIGATION Dial Functionkey function RIGHT SELECTOwner maintenance 12 Maintenance Maintenance and annual startupService technician Table 12A Service and Maintenance SchedulesClean condensate trap 12 MaintenanceAddress reported problems Inspect boiler areaCheck all boiler wiring 12 Maintenance continuedCheck ignition ground wiring Check control settingsFigure 12-2 Burner Assembly Check flame signalCleaning boiler heat exchanger Review with ownerFigure 12-3 Rope Gasket - Heat Exchanger Door Table 12B Heat Exchanger Cleaning KitsOiled bearing circulators 12 Maintenance continuedPC INTERFACE 13 DiagramsFigure 13-1 Ladder Diagram Installation & Operation Manual Figure 13-2 Wiring Diagram13 Diagrams LOW VOLTAGERevision I ECO #C10450 reflects changes made to Table 10A on page WBII-I-O Rev I 05/12