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1
Determine boiler location
• This unit is not intended for installations where
temperatures may reach below 32°F (0°C). Exposure to
freezing temperatures will cause the system and boiler to
freeze and leak.
5.
Check around the boiler for any potential air
contaminants that could risk corrosion to the boiler
or the boiler combustion air supply (see Table 1B).
Prevent combustion air contamination. Remove any of
these contaminants from the boiler area.
DO NOT install units in rooms or
WARNING
environments that contain corrosive
contaminants (see Table 1B). Failure to
comply could result in severe personal
injury, death, or substantial property
damage.
Provide clearances:
Clearances from combustible materials
1. Hot water pipes—at least 1/4" (6 mm) from combustible
materials.
2. Jacket—minimum of 0" from right side and 14" from rear
side for proximity from combustible materials.
3. Vent—minimum of 1" from combustible materials.
Clearances for service access
1.
If you do not provide the minimum clearances shown, it
may not be possible to service the boiler without removing
it from the space.
Recommended service clearances
Front: 30" (762mm)
Top: 24" (610mm)
Left side: 24" (610mm)
Rear: 24" (610mm)
Outdoor vent / air intake location:
The fl ue products discharged from the
WARNING
fl ue outlet on the outdoor vent may be
very hot. Avoid touching or making other
direct contact with the fl ue gases or the
vent termination. These components are
hot and direct contact can result in burns.
To prevent recirculation of the fl ue products into the
combustion air inlet, follow all instructions in this section.
Flue gas condensate can condense on exterior walls or on the
vent. Some discoloration or exterior building or unit surfaces
can be expected. Adjacent brick or masonry surfaces should
be protected with a rust resistant sheet metal plate.
Maintain a minimum of 24" clearance to the air inlet.
Locate the outdoor vent termination at least 48" (1.22m)
below and 48" (1.22m) horizontally from any window, door,
walkway or gravity air intake.
Locate the unit at least 10 feet (3.05m) away from any forced
inlet.
Multiple unit outdoor installations require 24" (1.22m)
clearance between each vent termination.
Clearances around outdoor installations can change with
time. Do not allow the growth of trees, shrubs or other plants
to obstruct the proper operation of the outdoor vent system.
Outdoor Knight XL Installation & Operation Manual
(continued)
Flooring and foundation
Flooring
The Outdoor Knight XL is approved for installation on
combustible fl ooring.
Do not install the boiler on carpeting even
WARNING
if foundation is used.
causing severe personal injury, death, or
substantial property damage.
Under no circumstances is the manufacturer to be held
responsible for water damage in connection with this
appliance, or any of its components. If fl ooding is possible,
elevate the boiler suffi ciently to prevent water from reaching
the boiler.
Prevent combustion air contamination
Do not install unit in locations that can allow contamination
of combustion air. Refer to Table 1B for products and areas
which may cause contaminated combustion air.
Table 1B Corrosive Contaminants and Sources
Products to avoid:
Spray cans containing chloro/fl uorocarbons
Permanent wave solutions
Chlorinated waxes/cleaners
Chlorine-based swimming pool chemicals
Calcium chloride used for thawing
Sodium chloride used for water softening
Refrigerant leaks
Paint or varnish removers
Hydrochloric acid/muriatic acid
Cements and glues
Antistatic fabric softeners used in clothes dryers
Chlorine-type bleaches, detergents, and cleaning solvents
found in household laundry rooms
Adhesives used to fasten building products and other
similar products
Areas likely to have contaminants
Dry cleaning/laundry areas and establishments
Swimming pools
Metal fabrication plants
Beauty shops
Refrigeration repair shops
Photo processing plants
Auto body shops
Plastic manufacturing plants
Furniture refi nishing areas and establishments
New building construction
Remodeling areas
Garages with workshops
Fire can result,
9
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