Ratings, Boiler manual – Weil-McLain 550-141-826/1201 User Manual
Page 42
SERVICE TECHNICIAN ONLY — read and follow completely.
Ratings
Table 10
GOLD WGO oil water boiler ratings
®
Boiler Model
Number
(9)
I=B=R
Burner
Capacity
GPH
(3)
DOE
Heating
Capacity
MBH
(4) (2)
Net
I=B=R
Ratings
(5)
MBH
(2)
DOE
Seasonal
Efficiency %
Afue
Minimum I=B=R
Chimney
Round
Flue
Outlet
Size In
(7)
Boiler
Water
Content
Gallons
Draft Loss
Thru Boiler
In W.C.
(8)
Rect
In
Round
In
Height
Ft
*WGO-2
0.70
86
75
86.4
8 x 8
6
15
7
11.0
0.010
*WGO-2PLUS
0.95
114
99
85.3
0.010
*WGO-3R
0.80
98
85
86.2
8 x 8
6
15
7
14.9
0.020
*WGO-3
0.95
115
100
85.3
0.020
*WGO-4R
1.00
122
106
86.2
8 x 8
6
15
7
13.4
0.010
*WGO-4
1.20
145
126
85.0
0.010
*WGO-5R
1.20
147
128
86.1
8 x 8
7
15
7
15.9
0.015
*WGO-5
1.45
175
152
85.0
0.015
*WGO-6R
1.40
171
149
86.1
8 x 8
7
15
7
18.4
0.015
*WGO-6
1.75
212
184
85.0
0.015
*WGO-7R
1.60
196
170
86.0
8 x 8
8
15
7
20.8
0.015
*WGO-7
2.00
242
210
85.0
0.015
**WGO-8
2.30
266 (6)
231
-
8 x 12
8
20
7
23.3
0.025
**WGO-9
2.55
295 (6)
257
-
25.8
0.030
*
Substitute “P” for completely assembled packaged boiler without burner (WGO-3 through WGO-6 only).
Substitute “A” for boiler only for use with approved burners as listed with I=B=R.
**
Available only as an “A” unit.
(1)
WGO boiler designed with convertible vertical and horizontal flue outlet.
(2)
MBH refers to thousands of Btu per hour.
(3)
Based on 140,000 Btu/gal.
(4)
Based on standard test procedures prescribed by the United States Department of Energy at combustion condition of 13.5% CO
2
and -0.02" W.C. draft overfire.
(5)
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 pick-up. Water ratings are based on a piping and pick-up allowance of 1.15. An additional
allowance should be made for unusual piping and pick-up loads. Consult local Weil-McLain Sales Office.
(6)
I=B=R gross output
(7)
See page 12 for minimum breeching diameter.
(8)
Listed draft losses are for factory-shipped settings.
(9)
Boiler model suffixes: "R" designates a reduced input version. NOTE: A burner nozzle change is required — refer to the burner
instructions or boiler’s rating label for correct selection.
Part number 550-141-826/1211
42
GOLD
WGO
OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 3 —
Boiler Manual