Ventilation & Combustion Air Requirements - Stanley Errigal Installation And Operating Instructions Manual

Fig.15
Connection to a masonry chimney may be done by
breaching into the chimney from the front of the fire-
place, no less than 8" (200mm) above the bottom of
the first flue tile, by installing a stainless steel or
other listed chimney connector from the appliances
flue outlet up through the fireplace damper and
smoke chamber, terminating at the first flue tile, or
by installing a stainless steel or other listed relining
system from the flue outlet up the entire length of the
chimney, where necessary.
VENTILATION & COMBUSTION AIR
REQUIREMENTS
Provision for outside combustion air may be neces-
sary to ensure that fuel-burning appliances do not
discharge products of combustion into the house.
Guidelines to determine the need for additional com-
bustion air may not be adequate for every situation.
If in doubt, it is advisable to provide additional air.
Outside combustion air may be required if:
1. The solid-fuel-fired appliance does not draw
steadily, smoke rollout occurs, fuels burns
poorly, or back drafts occur whether or not
there is combustion present.
2. Existing fuel-fired equipment in the house,
such as fireplaces or other heating appli-
ances, smell, do not operate properly, suffer
smoke roll-out when opened, or back-draft
whether or not there is combustion present.
3. Opening a window slightly on a calm
(windless) day alleviates any of the above
symptoms.
4. The house is equipped with a well-sealed
vapour barrier and tight fitting windows
and/or has any powered devices that
exhaust house air.
5. There is excessive condensation on win-
dows in the winter.
6. A ventilation system is installed in the house.
If these or other indications suggest that infiltration
air is inadequate, additional combustion air should
be provided from the outdoors. Outside combustion
air can be provided to the appliance by the following
means:
1. Indirect method: for an appliance not
certified for direct connection of outside
combustion air, the outside air is ducted to a
point no closer than (12") 300mm from the
appliance, to void affecting the performance
of the appliance.
2. A mechanical ventilation system: if the
house has a ventilation system (air change
or heat recovery):
a. The ventilation system may be able
to provide sufficient combustion make-up
air for the solid-fuel-fired appliance.
b. The householder should be informed that
the ventilation system might need to be
re-balanced by a ventilation technician
after installation of the appliance.
SPILLAGE TEST
In all installations a spillage test should be carried
out to ensure there is sufficient combustion air and
the flue system is
1. Light/burn appliance under normal condi-
tions in accordance with this installation
manual.
2. Close all doors and windows.
3. Operate all appliances requiring air at full
rate (eg. extraction hoods, tumble dryers
etc).
4. Check for spillage.
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