MN801GAS 060520
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Prepare the appliance
Burner input: Install a burner sized for the normal input rating
of the appliance. Do not install a burner with a higher firing rate
than the appliance rating. Do not install a burner with a firing
rate more than 10% lower than the appliance rating. The appli-
ance and vent system could be damaged due to condensation.
Clean the appliance: Clean the appliance thoroughly. Test all
electrical components and verify the relief valve works (boilers
only).
Seal the appliance: Seal all flue-gas containing joints. Seal all
connections to the vent piping or breeching.
Verify combustion chamber dimensions comply with the mini-
mum dimensions recommended on page 8. Install or replace
chamber liner if required by the appliance manufacturer. The
burner must not extend into the combustion chamber. The end
of the burner air tube must be within ¼" of the inside face of
the chamber. If the space around the burner air tube is more
than ¼", wrap the burner air tube with minimum 2300-°F-rated
ceramic fiber blanket to seal off the gap.
Repair or replace damaged appliance components. Inspect
the appliance thoroughly. Follow appliance manufacturer’s
guidelines for repair or replacement of any component found
defective.
When cleaning the appliance or working with ceramic fiber
refractories or fiberglass insulation, see WARNING on this
page.
Failure to comply with the above could result in severe personal
injury, death or substantial property damage.
Prepare appliance for burner mounting
Positive overfire pressure applications: When firing with positive
overfire pressure, do not exceed the pressure specified in the
appliance manual.
Positive overfire pressure reduces maximum burner capacity.
See Page 3 for estimated reduction in burner capacity with
pressurized firing and high altitude applications.
Failure to comply could result in severe personal injury, death
or substantial property damage.
Prepare burner and components
Do not install or operate the burner if any component is dam-
aged or if burner does not comply with the specifications of
Table 2 and other guidelines in this manual.
Combustion chamber minimum dimensions
1.
For applications that have not been specifically tested (OEM applications),
verify that the combustion chamber provides the minimum dimensions
shown in Table 2A. For specific OEM applications, the appliance
testing ensures suitability of the chamber.
2.
Chamber dimensions may be larger than listed in Table 2B, but should
not be excessively large.
Ceramic fiber or
Fiberglass insulation
Ceramic fiber materials, such as chamber liners, may
contain carcinogenic particles (chrystobalites) after
exposure to heat. Airborne particles from fiberglass
or ceramic fiber components have been listed as po-
tentially carcinogenic by the State of California. Take
the following precautions when removing, replacing
and handling these items.
Avoid breathing dust and avoid contact with skin or
eyes. Wear long-sleeved, loose-fitting clothing, gloves
and eye protection. Use a NIOSH N95 certified respira-
tor. This respirator meets requirements for protection
from chrystobalites. Actual job requirements or NIOSH
regulations may require other or additional protec-
tion. For information, refer to the NIOSH website,
http://www.cdc.gov/niosh/homepage.html.
Ceramic fiber removal: To prevent airborne dust,
thoroughly wet ceramic fiber with water before han-
dling. Place ceramic fiber materials in a plastic bag
and seal to dispose.
Avoid blowing, tearing, sawing or spraying fiber-
glass or ceramic fiber materials. If such operations are
necessary, wear extra protection to prevent breathing
dust.
Wash work clothes separately from other laundry.
Rinse clothes washer thoroughly afterwards to prevent
contamination of other clothing.
NIOSH First aid procedures:
Eye exposure — irrigate immediately
Breathing — fresh air.
2. Prepare site • assemble burner • mount burner
(continued)
