WTGO Boiler Manual

Part number 550-141-825/1211
42
GOLD
WTGO
OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 3 — Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Boiler Model
Number
(9) (10)
I=B=R
Burner
Capacity
GPH (3)
DOE
Heating
Capacity
MBH
(4) (2)
Net
I=B=R
Ratings
(5)
MBH (2)
DOE
Seasonal
Efciency %
Afue
Minimum I=B=R
Chimney
Round
Flue
Outlet
Size In
(7)
Boiler
Water
Content Gal
Draft Loss
Thru Boiler
In W.C. (8)
Rect
In
Round
In
Height
Ft
*WTGO-3LR 0.70 86 75 86.4
8 x 8 6 15 7 11.0
0.010
*WTGO-3L 0.95 114 99 85.3 0.010
*WTGO-3R 0.80 98 85 86.2
8 x 8 6 15 7 14.9
0.020
*WTGO-3 0.95 115 100 85.3 0.020
*WTGO-4R 1.00 122 106 86.2
8 x 8 6 15 7 13.4
0.010
*WTGO-4 1.20 145 126 85.0 0.010
*WTGO-5R 1.20 147 128 86.1
8 x 8 7 15 7 15.9
0.015
*WTGO-5 1.45 175 152 85.0 0.015
*WTGO-6R 1.40 171 149 86.1
8 x 8 7 15 7 18.4
0.015
*WTGO-6 1.75 212 184 85.0 0.015
*WTGO-7R 1.60 196 170 86.0
8 x 8 8 15 7 20.8
0.015
*WTGO-7 2.00 242 210 85.0 0.015
**WTGO-8 2.30 266 (6) 231 -
8 x 12 8 20 7
23.3 0.025
**WTGO-9 2.55 295 (6) 257 - 25.8 0.030
* Substitute “P” for completely assembled packaged boiler without burner (WTGO-3 through WTGO-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) WTGO boiler designed with convertible vertical and horizontal ue 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. dra overre.
(5) Net I=B=R ratings are based on net installed radiation of sucient 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 Oce.
(6) I=B=R gross output
(7) See page 12 for minimum breeching diameter.
(8) Listed dra losses are for factory-shipped settings.
(9) Boiler model suxes: "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.
(10) "L" designates a boiler with special front section (1½” supply tapping).
Ratings
Table 11 GOLD WTGO oil water boiler ratings
®