Flooring And Foundation; Provide Air Openings To Room; Residential Garage Installation - Weil-McLain Ultra 3 series User Manual

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gas fired water boiler
Prepare boiler location

Flooring and foundation

Flooring
1. The Ultra boiler is approved for installation on combustible floor-
ing, but must never be installed on carpeting.
Do not install boiler on carpeting even if foundation is
used. Fire can result, causing severe personal injury, death
or substantial property damage.
Foundation
1. Provide a solid foundation pad, at least 2 inches above the floor, if
any of the following is true:
• floor can become flooded.
• the floor is dirt, sand, gravel or other loose material.
• the boiler mounting area is severely uneven or sloped.
2. The minimum foundation size is:
• Ultra-80 to -230: 24 inches wide x 20 inches deep.
• Ultra-299 to -399: 24 inches wide x 23 inches deep
3. Foundation may be of wood, brick or concrete (minimum 2 inches
thick) construction.
4. If flooding is possible, elevate boiler sufficiently to prevent water
from reaching boiler.

Residential garage installation

Precautions
1. Take the following special precautions when installing the boiler in
a residential garage. If the boiler is located in a residential garage:
• Mount the boiler at a height above the floor as specified in the
National Fuel Gas Code, ANSI Z223.1 for U. S. installations, or
CSA B149.1 and B149.2 for Canadian installations.
• Locate or protect the boiler so it cannot be damaged by a
moving vehicle.
• Ensure that the installation complies with all applicable
codes.
6
— Boiler Manual
(continued)

Provide air openings to room

Air openings — Ultra boiler alone in boiler
room
1. No air ventilation openings into boiler room are needed
when clearances around Ultra boiler are at least equal to
the SERVICE clearances shown in Figure 1, page 5.
2. For spaces that do NOT supply this clearance, provide
two openings as shown in Figure 1, page 5. Each open-
ing must provide 1 square inch free area per 1,000 Btuh
of boiler input.
Air openings — Ultra boiler in same
space with other gas or oil-fired
appliances
1. Follow the National Fuel Gas Code (U. S.) or CSA B149.1
and B149.2 (Canada) to size/verify size of the combus-
tion/ventilation air openings into the space.
2. Size openings only on the basis of the other appliances in
the space. No additional air opening free area is needed
for the Ultra boiler because it takes its combustion air
from outside (direct vent installation).
The space must be provided with
combustion/ventilation air openings
correctly sized for all other appliances
located in the same space as the Ultra
boiler.
Reinstall boiler jacket front door after
servicing. The boiler front door must be
securely fastened to the boiler to prevent
boiler from drawing air from inside the
boiler room. This is particularly impor-
tant if the boiler is located in the same
room as other appliances.
Failure to comply with the above warn-
ings could result in severe personal
injury, death or substantial property
damage.
Part number 550-100-090/0809