Weil-McLain GOLD CGi-4E Manual page 67

CGi-4E Gas-Fired Water Boiler — Boiler Manual
GOLD
13b
Ratings
Table 10 Boiler ratings
Boiler DOE
model Heating
number capacity
(Btuh)
(Note 1) (Note 2)
76,000
CGi-4E
(Note 5)
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
Notes
of 1.15. An additional allowance should be made for unusual piping and pickup loads.
4. CGi-4E 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.
5. As an Energy Star Partner, Weil-McLain has determined that the CGi-4E meets the Energy Star guidelines for
energy efficiency.
CGi-4E 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 550-110-711/1108
0–2,000 feet 2,000–4,500 feet
altitude
Input Output Input
(Btuh) (Btuh) (Btuh)
90,000 76,000 81,000
Net
altitude I=B=R
ratings
Output
(Btuh)
(Btuh)
(Note 3)
68,400 66,000
DOE
Boiler DOE
water Seasonal
content efficiency
(gallons) (% A.F .U.E)
(Note 4)
2.1 85.0
(Note 5)
Vent
size
3"
67