Part number 550-141-825/1211
34
GOLD
WTGO
OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 3 —
Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Close clearance installation
Manual reset
temperature switch
Thermostat
44156
Close clearance installation
Substitute these instructions for corresponding material in
manual. All other procedures and practices must remain the same.
Recommended service and minimum clearances shown on
page 8 should be used where possible. Where closer clearances
are required:
•
Top of boiler — If less than 24" available, provide removable
surface to allow for cleaning boiler flueways.
•
Right or left side — Minimum 2 inches.
•
Front — Minimum 2 inches from burner.
•
Type “L” double-wall flue pipe to combustible surface — as
listed in Table 6 and Figure 25 through Figure 27, page 35.
Jacket cap must be in place on boiler to avoid requir-
ing an 9" minimum clearance from back or top of
boiler to combustible material. Flue pipe clearances
must take precedence over jacket clearances.
1. Install boiler using clearances described at left.
2. Install barometric control 18-20 inches from boiler in
breeching.
3. Attach manual reset temperature switch near upper surface
of enclosed area. See Figure 23.
4. Wire switch in series with thermostat. See Figure 24.
5. Provide two combustion/ventilation openings when install-
ing in confined space. Size opening 140 sq. in. (1000 Btu)
per 1 GPH input. Locate openings near top and bottom of
enclosed space.
To provide close clearances as described on page 34 and page 35:
Obtain the Close Clearance Kit, Weil-McLain Part No. 386-500-050. Install the kit as described below. Failure to use
kit or install as described can result in a fire hazard, causing severe personal injury, death or substantial property
damage.
Figure 23
Manual reset temperature switch location
Figure 24
Manual reset temperature switch wiring
Area above boiler
Bracket
1 to 5
inches
Manual reset
temperature
switch
Combustible surface
#6 X ½" Phillips
Sheet metal
screw
#10 X ½" Phillips
sheet metal screw
