SERVICE TECHNICIAN ONLY — read and follow completely.
Table 10
GOLD WGO
oil-fired water boiler ratings
®
DOE
AHRI Certified Ratings
Boiler
Model
(9)
Burner Input
Heating
Capacity
Seasonal
Efficiency
Net
Rating
(water)
Boiler
Water
Content
Flue
Outlet
Diameter
Minimum
Chimney
Draft
Loss
Thru
boiler
GPH
(3)
MBH
(3)
MBH
(2) (4)
AFUE
%
MBH
(2) (5)
Gallons
Inches
(7)
Rect
In
Round
In
Height
Ft
In W.C.
(8)
*WGO-2
0.70
98
86
86.4
75
11.0
7
8 x 8
6
15
0.010
*WGO-3R
0.80
112
98
86.2
85
14.9
7
8 x 8
6
15
0.020
*WGO-3
0.95
133
115
85.3
100
0.020
*WGO-4R
1.00
140
122
86.2
106
13.4
7
8 x 8
6
15
0.010
*WGO-4
1.20
168
145
85.0
126
0.010
*WGO-5R
1.20
168
147
86.1
128
15.9
7
8 x 8
7
15
0.015
*WGO-5
1.45
203
175
85.0
152
0.015
*WGO-6R
1.40
196
171
86.1
149
18.4
7
8 x 8
7
15
0.015
*WGO-6
1.75
245
212
85.0
184
0.015
*WGO-7R
1.60
224
196
86.0
170
20.8
7
8 x 8
8
15
0.015
*WGO-7
2.00
280
242
85.0
210
0.015
* * WGO-8
2.30
322
266 (6)
-
231
23.3
7
8 x 12
8
20
0.025
* * WGO-9
2.55
357
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 AHRI.
**
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 AHRI 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.
(6)
AHRI 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.
Ratings
Part number 550-141-826/1014
42
GOLD
WGO
OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 3 —
Boiler Manual