Weil-McLain 550-110-260/02002 manual 13b Ratings, Doe

Boiler Manual

13b Ratings

							DOE
									(Note 5)
Table 7	Boiler ratings
Boiler	DOE	0-2,000 feet		2,000-4,500 feet		Net	Boiler	DOE	Vent
model	Heating	Input	Output	Input	Output	I=B=R	water	Seasonal	size
number	capacity					ratings	content	efficiency
	(Btuh)	(Btuh)	(Btuh)	(Btuh)	(Btuh)	(Btuh)	(gallons)	(% AFUE)
(Note 1)	(Note 2)					(Note 3)		(Note 5)	(Note 4)
CGs-3	57,000	67,000	57,300	60,300	51,600	50,000	1.5	85.3	3"
(Note 5)
CGs-4	85,000	100,000	85,000	90,000	76,500	74,000	2.1	84.6	3"
CGs-5	112,000	133,000	112,400	119,000	100,600	97,000	2.7	84.0	3"
CGs-6	140,000	167,000	140,300	150,300	126,300	122,000	3.3	83.4	3"

Notes 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.

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.CGs boilers require special venting, consistent with Category III or IV boiler. Use only the vent materials and methods specified in CGs vent supplements. CGs boilers may be direct-vented (using 3" diameter air piping) as specified in the direct vent supplements.

5.As an Energy Star Partner, Weil-McLain has determined that the CGs-3meets the Energy Star guidelines for energy efficiency.

CGs boilers for residential radiant panel systems, converted gravity heating systems or other low water temperature 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 550-110-260/0200 59