Crown Boiler BWC Series installation instructions Pipe and Circulator Sizing for Boiler Loop

TABLE 8.5: PIPE AND CIRCULATOR SIZING FOR BOILER LOOP

	(a)	(b)	(c)	(d)
BOILER MODEL	PIPE SIZE	FLOW		BOILER LOOP
			CIRCULATOR	MAX EQUIVALENT
			MODEL	LENGTH
	(in NPT)	(GPM)		(ft)
BWC150	1 1/4	8.0	Taco 007	148
BWC150	1 1/4	8.0	Taco 0010	224
BWC225	1 1/4	12.0	Taco007	138
BWC225	1 1/4	12.0	Taco 0010	208

NOTE:

For piping method #1, “boiler loop” is heating system secondary loop

For piping method #2, “boiler loop” is heating system primary loop

TABLE 8.6: PIPE AND CIRCULATOR SIZING FOR INDIRECT WATER HEATER LOOP

	(a)	(b)	(c)	(d)	(e)	(f)
BOILER			MAX. I.W.H.			I.W.H. LOOP MAX
	PIPE SIZE	FLOW	PRESSURE	CROWN INDIRECT	CIRCULATOR	EQUIVALENT
MODEL
			DROP	WATER HEATERS	MODEL	LENGTH
	(in NPT)	(GPM)	(ft HEAD)			(ft)
				MS-26, MS-40
BWC150	1 1/4	8.0	3.0	MSH-40H	Taco 007	26
				MT040G, MT050G
				MS-26, MS-40
BWC150	1 1/4	8.0	3.0	MSH-40H	Taco 0010	165
				MT040G, MT050G
BWC150	1 1/4	8.0	5.0	MS-53, MS-79	Taco 0010	96
				MSH053H (NOTE 1)
BWC150	1 1/4	10.0	5.0	MT079G (NOTE 1)	Taco 0010	38
				MS-26, MS-40
BWC225	1 1/4	9.0	3.0	MSH-40H	Taco 007	90
				MT040G, MT050G
BWC225	1 1/4	9.0	5.0	MS-53, MS-79	Taco 0010	97
				MSH053H (NOTE 1)
BWC225	1 1/4	10.0	5.7	MT079G, MT100G	Taco 0010	60
				(NOTE 2)

Note 1: MT100G or MS-119 can be installed with BWC150, Taco 0010 and up to 96ft of 1 1/4 piping, however catalog rating will not be achieved.

Note 2: MS-119 can be installed with BWC225, Taco 0010 and up to 60ft of 1 1/4 piping, however catalog rating will not be achieved.

25