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4-a
3. PROVIDE COMBUSTION AIR
INSUFFICIENT COMBUSTION AIR
SUPPLY may result in the production and
release of deadly carbon monoxide (CO) into the
home which can cause severe personal injury or
death.
4. CONNECT VENTING
IMPROPER VENTING may result in
property damage and the release of ue
gases which contain deadly carbon monoxide (CO)
into the home, which can cause severe personal
injury, death or substantial property damage.
The vent system shall be designed and
constructed in accordance with NFPA 54 and
applicable local codes to develop a positive ow
adequate to convey ue or vent gases to the
outdoors, while ensuring that ue gases do not
cool prematurely.
Observe all general venting guidelines provided in
Appendix B—Venting. Additionally:
1. This appliance shall be vented into a listed
gas vent, masonry, metal, or factory-
built chimney as required by NFPA 54
and applicable local codes for Category I
appliances. If venting this appliance into
a masonry chimney, the chimney must be
lined with a listed chimney lining system
DAMPER MUST BE OPEN when the main burner is ring.
4-b
(i.e. Type B gas vent or exible metal) as
required by NFPA 54 and applicable local
codes. Clay ue lined masonry chimneys do
not meet the venting requirements for this
appliance.
2. Attach the vent damper with three
sheetmetal screws around the perimeter of
the ue collar (Figure 4-a), oriented so that
the position indicator is visible. The vent
damper may also be mounted anywhere
between the ue outlet and the chimney
within reach of the electrical harness.
3. Vent connector shall be double-wall
insulated gas vent as supplied with this
boiler or Type B (double-wall) gas vent only.
Using sheetmetal screws, attach the vent
connector between the vent damper and
the vertical chimney (Figure 4-b). Do not
exceed the maximum vent connector length
in Table 4.1.
Like all fuel-burning appliances, boilers need air to
operate reliably and safely.
Provide combustion air using the instructions in
Appendix A—Combustion Air.