Weil-McLain Series 2 manual 13b Ratings, Doe

GOLD CGi Gas-Fired Water Boiler — Boiler Manual

13b Ratings

										DOE
Table 10	Boiler ratings
Boiler		DOE	0–2,000 feet		2,000–4,500 feet		Net	Boiler	DOE	Vent
model		Heating	altitude		altitude		I=B=R	water	Seasonal	size
number		capacity					ratings	content	efficiency
			Input	Output	Input	Output
		(Btuh)					(Btuh)	(gallons)	(% A.F.U.E)
			(Btuh)	(Btuh)	(Btuh)	(Btuh)
(Note 1)		(Note 2)					(Note 3)			(Note 4)
CGi-25		42,000	50,000	42,000	45,000	38,000	37,000	1.5	84.0	3"
CGi-3		57,000	67,000	57,000	60,000	51,000	50,000	1.5	84.3	3"
CGi-4		85,000	100,000	85,000	90,000	76,000	74,000	2.1	84.0	3"
CGi-5		112,000	133,000	112,000	120,000	101,000	97,000	2.7	83.7	3"
CGi-6		140,000	167,000	140,000	150,000	126,000	122,000	3.3	83.3	3"
CGi-7		167,000	200,000	167,000	180,000	150,000	145,000	3.8	83.0	3"
CGi-8		194,000	233,000	194,000	210,000	175,000	169,000	4.4	82.7	3"
		1. Add “PIN” for natural gas boiler - “PIL” for propane gas boiler.
		2. Based on standard test procedures prescribed by the United States Department of Energy.
Notes		3. Net I=B=R ratings are based on net installed radiation of sufficient quantity for the requirements of the building
		and nothing need be added for normal piping and pickup. Ratings are based on a piping and pickup allowance
		of 1.15. An additional allowance should be made for unusual piping and pickup loads.
		4. CGi boilers require special venting, consistent with Category I or III boiler. Use only the vent materials and
		methods specified in this manual. Vent diameter shown above is for direct exhaust venting. See Table 3,
		page 14, for vent diameter when chimney draft venting.

CGi boilers for residential radiant panel systems, converted gravity heating systems or other low water tempera- ture applications should be installed with balancing valves and bypass piping equal to the supply and return size to avoid excessive flue gas condensation due to lower operating water temperatures. For alternate piping, contact your Weil-McLain sales office. CSA design certified for installation on combustible flooring. Tested for 50 psi working pressure.

Part Number 550-110-710/0107 67