Pump Size Grundfos, Armstrong | Lochinvar 51-211 specs

Installation & Operation Manual

6 Hydronic piping

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

6

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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Image 38

Lochinvar 51-211 operation manual Pump Size Grundfos, Armstrong

Contents

Models 51 Contents When servicing boiler Please read before proceeding Knight Wall Mount Boiler How it works Stainless steel heat exchanger Gas connection pipe Models 51 Ratings Knight Wall Mount Boiler Ahri Rating Determine boiler location Installation must comply withCloset and alcove installations Before locating the boiler, check 1Closet Installation Minimum Required Clearances Wall mounting location PrecautionsVent and air piping Prevent combustion air contamination Areas likely to have contaminants When using an existing vent system to install a new boilerProducts to avoid When removing a boiler from existing common vent system Gas conversions Prepare boilerRemove boiler from wood pallet Mounting to a concrete wall Mounting the boilerMounting to a wood studded wall Mounting to a metal studded wall Direct venting options Vertical Vent General ventingDirect venting options Sidewall Vent Install vent and combustion air piping Air intake/vent connections Length Requirements for installation in CanadaSizing Materials Air inlet pipe materials Model Kit Number Optional room airAir contamination Primer Material StandardVent fittings Polypropylene Centrotherm InnoFlue SW Flue Stainless steel ventApproved Stainless Steel Vent Manufacturers Make Model Flue Intake Air Adapter Termination Vent/air termination sidewall If using the alternate sidewall terminationSidewall direct venting Determine location 2AClearance to Gravity Air Inlets Prepare wall penetrations Prepare wall penetrations Alternate Field Supplied Option Multiple vent/air terminations 5AMultiple Vent Terminations must also comply with -1A Description and usage Sidewall termination installationSidewall termination optional concentric vent 8Concentric Vent Dimensional Drawing Sidewall termination optional concentric vent models 10Concentric Vent Sidewall Attachment Multiventing sidewall terminations Vertical direct venting Vent/air termination vertical Prepare roof penetrations 2Vertical Terminations with Multiple Boilers Vertical termination installation Vertical termination optional concentric vent Multiventing vertical terminations Minimum Combustion AIR Typical Alternate vertical concentric venting Concentric Venting Arrangement Existing vent as a chase AIR Inlet Flue Exhaust Seal CAP Existing Flue Outlet Low water cutoff device Hydronic pipingSystem water piping methods General piping information Chilled water system Near boiler piping components Near boiler piping connections Circulator sizing Pump Size Grundfos Armstrong Variable speed pump option Smart System / Multi-temperature loop control optionVariable speed pump setup 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 Connecting gas supply piping Gas connections Natural gas Propane Gas Length of Pipe in Straight Feet for 1/2 PSI Natural Gas Pipe Capacity ChartCheck inlet gas supply Gas valve replacement Gas Pressure Line voltage connections Field wiringInstallation must comply with Low voltage connections Flow switch Outdoor temperature sensorLouver proving switch Thermostat System supply sensor Alarm contactsWiring of the cascade Boiler management system 4Low Voltage Field Wiring Connections Condensate disposal Condensate drain Check/control water chemistry Freeze protection when usedStart-up Fill and test water system Inspect/fill condensate system Clean/Inspect Trap AssemblyCheck for gas leaks Check thermostat circuits Inspect/check condensate lines and fittings If boiler does not start correctly Final checks before starting the boilerStart the boiler Check system and boiler 2Operating Instructions Set space heating operation Natural Gas Propane Set domestic hot water DHW operation Verify DHW modeConfiguration of the cascade How the boiler operates Operating informationGeneral How the control module operates Temperature control Protection features Boiler temperature regulation Outdoor reset operation, if used Cascade Sequence of operation Operation Display User Access modesInstaller Knight wall mount boiler control module 1Control Panel Call for Heat Operating information Dial Function Owner maintenance Maintenance Maintenance and annual startupService technician Maintenance Check control settings Check ignition ground wiringCheck all boiler wiring Check expansion tank Review with owner Check flame signalCleaning boiler heat exchanger Heat Exchanger Cleaning Kits Oiled bearing circulators Diagrams PC Interface 2Wiring Diagram