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Required Amount of Bolts for Wall-Mounting the Boiler
Model
055 - 110
155 - 285
399
Pilot Hole Size by Wood Type
Type
Soft
Hard
Table 1 - Bolts Required and Pilot Hole Size for Wall-Mounting
the Boiler
2. Mounting to a Metal Frame
a. The provided mounting bracket must be mounted to the
center of at least 2 studs using standard steel or stainless steel
toggle bolts 3/16" diameter or larger, and at least 2" long for
direct mounting on stud for 55 – 110 models, and 3/8" diameter
or larger, and at least 2" long for 155 – 399 models for direct
mounting on at least 18 gauge studs. Be sure the bracket is
level and mark the hole location of the top bracket height and
horizontal stud location. Ensure the marked holes are located
in the center of the building frame (studs).
b. 2" is the minimum toggle bolt length if the bracket is directly
on stud. Increase length for any materials covering the studs.
c. Predrill holes on the marked stud locations. The predrilled
holes should be ½" in diameter for 3/16" bolts, and ¾" in
diameter for 3/8" bolts, to allow for the collapsed wings of the
toggle to slide through. Ensure that the predrilled holes are
straight and square to the wall. Failure to do so could lead to
insufficient support of out of level boiler. See Figure 4.
d. Using the predrilled holes, mount the hanger bracket to the
building frame (studs) with the toggle bolts. Ensure that the
bolt toggles are through the stud and expanded catching the
inside of the stud. Tighten the toggle bolt until the mounting
bracket is secure. Hang boiler on the now wall mounted
bracket. Be certain that the bracket is engaged before letting
the boiler hang free. Slowly release the weight of the boiler
while ensuring the bracket is properly secure. Verify that the
boiler is securely mounted before leaving it unsupervised.
G. Residential Garage and Closet Installations
Check with your local Authority Having Jurisdiction for
requirements when installing boiler in a garage or closet.
Please read the entire manual before attempting installation.
Failure to properly take factors such as boiler venting,
piping, condensate removal, and wiring into account before
installation could result in wasted time, money, and possible
property damage and personal injury.
Precautions
If the boiler is located in a residential garage, per ANSI Z223.1:
• Install the boiler burner and ignition devices a mini-
mum of 18" above the floor of the garage. This will
ensure the burner and ignition devices are well off the
floor.
• Locate or protect the boiler so it cannot be damaged
by a moving vehicle.
Amount of Bolts
The space must be provided with correctly sized combustion/
ventilation air openings for all other appliances located in the
2
space with the boiler. For power venting installations using
4
room air for combustion, refer to the boiler venting section, this
6
manual, for descriptions of confined and unconfined spaces. Do
not install the boiler in an attic. Failure to comply with these
warnings could result in substantial property damage, severe
Drill Bit Size
personal injury, or death.
3/32"
H. Exhaust Vent and Intake Pipe
3/16"
The boiler is rated ANSI Z21.13 Category IV (pressurized vent,
likely to form condensate in the vent) and requires a special vent
system designed for pressurized venting.
NOTE: The venting options described here (and further
detailed in the Venting section, this manual) are the lone
venting options approved for this boiler. Failure to vent the
boiler in accordance with the provided venting instructions
will void the warranty.
Failure to vent the boiler properly will result in serious personal
injury or death.
Do not attempt to vent this boiler by any means other than
those described in this manual. Doing so will void the warranty
and may result in severe personal injury or death.
Vents must be properly supported. Boiler exhaust and intake
connections are not designed to carry heavy weight. Vent
support brackets must be within 1' of the boiler and the balance
at 4' intervals. Boiler must be readily accessible for visual
inspection for first 3' from the boiler. Failure to properly support
vents could result in property damage, severe personal injury,
or death.
The exhaust discharged by this boiler may be very hot. Avoid
touching or other direct contact with the exhaust gases of the
vent termination assembly. Doing so could result in severe
personal injury or death.
1. Direct Vent of Exhaust and Intake
If installing a direct vent option, combustion air must be drawn
from the outdoors directly into the boiler intake and exhaust
must terminate outdoors. There are three basic direct vent
options detailed in this manual: 1. Side Wall Venting, 2. Roof
Venting, and 3. Unbalanced Venting.
Be sure to locate the boiler such that the exhaust vent and
intake piping can be routed through the building and properly
terminated. Different vent terminals can be used to simplify and
eliminate multiple penetrations in the building structure (see
Optional Equipment in Venting Section). The exhaust vent and
intake piping lengths, routing, and termination methods must
all comply with the methods and limits given in the Venting
Section, this manual.
When installing a combustion air intake from outdoors, care
must be taken to utilize uncontaminated combustion air. To
prevent combustion air contamination, see Table 2.
11
WHL-016 Rev. 4.14.16
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