WTGO Boiler Manual

Part number 550-141-825/1211
9
GOLD
WTGO
OIL-FIRED NATURAL DRAFT WATER BOILER — SERIES 3 — Boiler Manual
SERVICE TECHNICIAN ONLY — read and follow completely.
Before installing boiler (continued)
Boiler
model
Length
inches
Width
inches
Min.
height
inches
WTGO-2
17
22 2
WTGO-3
17
22 2
WTGO-4
20
22 2
WTGO-5
20
22 2
WTGO-6
23
22 2
WTGO-7
26
22 2
WTGO-8
29
22 2
WTGO-9
32
22 2
Table 1 Boiler foundation sizes
Provide air for combustion and ventilation
Do not install exhaust fan in boiler room.
Adequate combustion and ventilation air:
• Assures proper combustion.
• Reduces risk of severe personal injury or death from possible flue gas
leakage and carbon monoxide emissions.
Older buildings with single-pane windows, minimal weather-stripping and
no vapor barrier often provide enough natural infiltration and ventilation
without dedicated openings.
New construction or remodeled buildings are most often built tighter.
Windows and doors are weather-stripped, vapor barriers are used and
openings in walls are caulked. As a result, such tight construction is unlikely
to allow proper natural air infiltration and ventilation.
Follow state, provincial or local codes when sizing adequate combustion and
ventilation air openings. In absence of codes, use the following guidelines
when boiler is in a confined room (defined by NFPA 31 as less than 7200
cubic feet per 1 GPH input of all appliances in area. A room 8 ft. high x
33.5 ft. x 33.5 ft. is 7200 cu. ft.):
• Provide two permanent openings — one within 12 inches of ceiling,
one within 12 inches of floor. Minimum height or length dimension
of each rectangular opening should be at least 3 inches.
• When inside air is used — each opening must freely connect with areas
having adequate infiltration from outside. Each opening should be at
least 140 sq. in. per 1 GPH input (1 sq. in. per 1000 Btu input) of all
fuel-burning appliances plus requirements for any equipment that can
pull air from room (including clothes dryer and fireplace).
• When outside air is used — connect each opening directly or by ducts
to the outdoors or to crawl or attic space that freely connects with
outdoors. Size per below:
• Through outside wall or vertical ducts — at least 35 sq. in. per
1 GPH input (1 sq. in. per 4000 Btu input) of all fuel-burning
appliances plus requirements for any equipment that can pull air
from room (including clothes dryer and fireplace).
• Through horizontal ducts — at least 70 sq. in. per 1 GPH boiler
input (1 sq. in. per 2000 Btu input) of all fuel-burning appliances
plus requirements for any equipment that can pull air from room
(including clothes dryer and fireplace).
• Where ducts are used, they should have same cross-sectional area as
free area of openings to which they connect. Compensate for louver,
grille or screen blockage when calculating free air openings. Refer
to their manufacturer’s instructions for details. If unknown, use:
• Wood louvers, which provide 20-25% free air.
• Metal louvers or grilles, which provide 60-75% free air.
Lock louvers in open position or interlock with equipment to prove open
before boiler operation.
Lay a foundation, if needed
Boiler may be installed on non-carpeted combustible
flooring.
For residential garage installation, install boiler so
burner is at least 18 inches above floor to avoid contact
with gasoline fumes.
A level concrete or masonry foundation is required
when:
• Floor could possibly become flooded.
• Non-level conditions exist.
Solid concrete blocks can be used to create a pad.