Specifications

Solution 1.8 Installation and Operation Manual 37
There are two reasons why the
chimney in the house at right will cold
backdraft when it is cold outside and
there is no fire burning in the stove.
First, the chimney runs up the outside
of the house, so the air in it is colder
and denser than the warm air in the
house. And second, the chimney is
shorter than the heated space of the
house, meaning the negative
pressure low in the house will pull
outside air down the chimney,
through the stove and into the room.
Even the finest stove will not work
well when connected to this chimney.
8.5 Supply of Combustion Air
In Canada, wood stoves are not required to have a supply of combustion air from outdoors (except
in mobile homes) because research has shown that these supplies do not give protection against
house depressurization and may fail to supply combustion air during windy weather. However, to
protect against the risk of smoke spillage due to house depressurization, a carbon monoxide
(CO) detector/alarm is required in the room where the stove is installed. The CO detector will
provide warning if for any reason the wood stove fails to function correctly.
8.5.1 Combustion Air Supply in Mobile Homes
Only a wood stove certified and labelled as ‘mobile home approved’ may be installed in a
mobile home. This Solution 1.8 stove is ‘mobile home approved’ only with the pedestal option.
Wood stoves installed in mobile homes must have a ducted supply of combustion air from
outdoors. This air supply should be routed down through the house floor into the vented crawl
space under the mobile home. The air supply duct should be non-combustible aluminum flex duct
with a screened weatherhood on the outside end.
Note: Fabric duct may also be used, provided it is suitable for HVAC use and meets the
requirements of ULC-S110 or UL-181 Class 1 standards. It must have a non-combustible
insulation and be corrosion resistant.
Where a mobile home has been converted to a standard house by mounting it on a permanent
basement foundation, the supply of outdoor air is not required.
8.5.2 Air Supply in Conventional Houses
The safest and most reliable supply of combustion air for your wood stove is from the room in
which it is installed. Room air is already preheated so it will not chill the fire, and its availability is
not affected by wind pressures on the house. Contrary to commonly expressed concerns, almost
all tightly-sealed new houses have enough natural leakage to provide the small amount of air
needed by the stove. The only case in which the wood stove may not have adequate access to
combustion air is if the operation of a powerful exhaust device (such as a kitchen range exhaust)
causes the pressure in the house to become negative relative to outdoors.