2- A 3” (inch) diameter rigid exhaust pipe must be installed to the top of the chimney or to a
minimum of 10’ (feet).
3- A 6” rigid or flexible pipe must be installed from stove to chimney opening to allow for
fresh air intake.
4- The chimney must have a vent cap.
5- All connections should be sealed to prevent leakage.
6- This unit can not be connected into a chimney flue or pipe serving another appliance.
FIREPLACE INSTALLATION
If this method is used the unit must be sealed air tight against the fireplace opening to
prevent combustion air from being drawn from within the house.
*Before installing the Grain Comfort Plus, measure to be sure the stove will cover
the opening of the fireplace. If the stove does not cover the opening, installation cannot be done.
*If the Grain Comfort Plus is used as fireplace insert, it must be installed in a fireplace, which
satisfies the requirements of the National Fireplace Protection Association (NFPA 211) in the
United States or the CSA B365 in Canada.
Following are suggested methods of installing the Grain Comfort Plus into a masonry fireplace.
The method you use depends on what type of fireplace hearth is in your home.
1- If the fireplace hearth is equipped with an ash dump, the door over the ash dump hole
should be removed and the plate or cover on the outside removed. Thoroughly clean the
dump of all ashes and debris. Fabricate a screen of 3/8”, or less, expanded metal or screen
and cover outside hole to prevent rodents, birds, etc. from entering. Back inside the
home—measure the location of the ash dump opening in relation to the stove bottom.
2- If it is determined that the stove will block the trap door, then the unit must be raised
approximately 1/2 inch to allow fresh combustion air to enter the fireplace area and to be
drawn into the unit. Any suitable non-combustible shim such as 1/2" angle iron may be
used to raise the unit. If the ash dump opening is far enough to the rear of the hearth so
that it will not be covered by the stove bottom, then it is not necessary to raise the unit off
the hearth.
3- Before inserting the unit, attach a 3-inch diameter elbow to the unit’s 3-inch exhaust
pipe. Increase the pipes diameter to 6 inches by using a 3 to 6 inch pipe increaser.
Measure and cut a section of 6-inch smooth or steel stovepipe long enough to carry the
exhaust above the smoke shelf (damper area) of the chimney. The pipes connections
should be secured with screws to prevent it from coming loose during installation. Guide
the pipe up the chimney and slide the stove into the fireplace.
4- The method of inserting a unit into a fireplace without an ash dump is simpler but may
require inspection and maintenance on a more frequent basis. Follow the instructions
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