Burnham manual Specifications, ES2 Series

SPECIFICATIONS

Ratings

ES2 Series

Boiler Model	Input (MBH)	DOE Heating Capacity (MBH)	Net I=B=R Rating (MBH)	AFUE (%)
ES23	70	59	51	85
ES24	105	88	77	85
ES25	140	118	102	85
ES26	175	147	128	85
ES27	210	176	153	85
ES28	245	206	179	85
ES29	280	235	205	85

Electrical Requirements: 120VAC, 60 Hz, 1-ph, 15A

Dimensions and Connections

Boiler	Depth	Width	Height	Supply NPT	Return NPT	Vent	Gas NPT	Relief Valve	Drain
Model				(inch)	(inch)	(inch)	(inch)	NPT (inch)	NPT (inch)
ES23	33	12¾	41	1¼	1¼	4	½	¾	¾
ES24	33	15½	41	1¼	1¼	5	½	¾	¾
ES25	33	18½	41	1¼	1¼	6	½	¾	¾
ES26	33	21½	41	1¼	1¼	6	½	¾	¾
ES27	33	24¾	41	1¼	1¼	7	¾	¾	¾
ES28	33	27¾	41	1¼	1¼	7	¾	¾	¾
ES29	33	30¾	41	1¼	1¼	8	¾	¾	¾

Water Temperatures and Flows

Boiler Model	Allowable Supply	Minimum Return	Minimum Flow	Waterside Pressure Drop
	Water Temperature	Water Temperature	(GPM)	at 20°F ΔT
	(°F)	(°F)		(Ft. of Head)
ES23	130-220	110	None	<1
ES24	130-220	110	None	<1
ES25	130-220	110	None	<1
ES26	130-220	110	None	<1
ES27	130-220	110	None	<1
ES28	130-220	110	None	<1
ES29	130-220	110	None	<1

Weights and Volume

Boiler	Shipping Weight	Empty Weight	Water Content
Model	(lbs)	(lbs)	(gal)
ES23	250	170	2
ES24	300	220	3
ES25	350	270	4
ES26	410	320	5
ES27	460	370	5
ES28	510	420	6
ES29	560	470	7