Lochinvar WH 55-399 20F Temperature Rise Applications, 25F Temperature Rise Applications, Ft/Hd

Installation & Operation Manual

6 Hydronic piping

Figure 6-2Pressure Drop vs. Flow

	3.00											9.00
	2.50											8.00
												7.00
										MODEL												MODEL
	2.00											6.00
FT/HD	1.50										FT/HD	5.00										110
										55		4.00
	1.00											3.00										155
										85
												2.00
	0.50
												1.00
	0.00											0.00
	0		2	4		6	8	10	12	14		0	2	4	6	8	10	12	14	16	18	20
	-0.50						FLOW										FLOW
	3.50
	3.00											2.00
	2.50									MODEL		1.80										MODEL
												1.60
	2.00											1.40
FT/HD
											FT/HD	1.20
										199
	1.50											1.00
												0.80										399
	1.00									285		0.60
												0.40
	0.50											0.20
	0.00											0.00
												0	5	10	15	20		25	30	35	40	45
	0	5	10	15	20	25	30	35
																	FLOW
				FLOW
Table 6A Circulator Recommendations for Temperature Rise Applications_20°, 25°, and 35°

				20°F Temperature Rise Applications
Model	GPM		FT/HD	Minimum Pipe		Pump
				Size	Grundfos	TACO	B & G	Armstrong
55	5		0.27	1"	UPS 15-58FC (1)	007	NRF-22	E7
85	8		0.94	1"	UPS 15-58FC (1)	007	NRF-22	E7
110	10		1.53	1"	UPS 15-58FC (2)	007	NRF-22	E7
155	15		4.26	1"	UPS 15-58FC (3)	007	NRF-22	E7
199	19		1.13	1.25"	UPS26-99F	0011	NRF-36 (1)	E7
285	27		2.42	1.25"	UPS26-99F	0011	NRF-36 (3)	E7
399	38		1.42	1.5"	UPS26-99F	0012	PL-55	E11
				25°F Temperature Rise Applications
Model	GPM		FT/HD	Minimum Pipe		Pump
				Size	Grundfos	TACO	B & G	Armstrong
55	4		0.17	1"	UPS 15-58FC (1)	007	NRF-22	E7
85	7		0.72	1"	UPS 15-58FC (1)	007	NRF-22	E7
110	8		0.98	1"	UPS 15-58FC (2)	007	NRF-22	E7
155	12		3.13	1"	UPS 15-58FC (3)	007	NRF-36 (1)	E7
199	15		0.71	1.25"	UPS26-99F	0011	NRF-36 (1)	E7
285	22		1.61	1.25"	UPS26-99F	0011	NRF-36 (3)	E7
399	31		0.95	1.5"	UPS26-99F	0012	PL-55	E11
				35°F Temperature Rise Applications
Model	GPM		FT/HD	Minimum Pipe		Pump
				Size	Grundfos	TACO	B & G	Armstrong
55	3		0.10	1"	UPS 15-58FC (1)	007	NRF-22	E7
85	5		0.37	1"	UPS 15-58FC (1)	007	NRF-22	E7
110	6		0.55	1"	UPS 15-58FC (2)	007	NRF-22	E7
155	9		1.76	1"	UPS 15-58FC (3)	007	NRF-36 (1)	E7
199	11		0.38	1.25"	UPS 15-58FC (3)	0010	NRF-36 (1)	E7
285	16		0.85	1.25"	UPS 15-58FC (3)	0010	NRF-36 (1)	E7
399	22		0.48	1.5"	UPS26-99F	0011	NRF-36 (1)	E7
		Pumps listed in bold type are provided by the factory as the boiler circulation pump.
NOTICE

NOTICE

The temperature rise provided by a pump/model combination will decrease by 3% per 1000 feet of elevation.

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