Chimney Draft Requirements:
Chimney draft is the measurement of the pull or vacuum created
by the chimney. It can be measured with a manometer and is expressed in inches of water (inch
wc). To measure you need to drill a small hole in the stovepipe between the flue collar and any
stovepipe dampers installed into the stovepipe system. Insert the manometer connection into the
hole and note the reading. Ideally you should have a reading of between -.03 and -.06 inches of
water (inch wc). If the chimney produces less than -.03 your fire can be very sluggish. In worst
case instances combustion byproducts like smoke and carbon monoxide can be expelled from the
furnace. This can possibly create a very dangerous situation.
A draft of more than -.06 (inch wc) will waste some of your heat by causing it to be drawn up the
chimney too quickly. The higher the draft goes the more heat that is wasted up the chimney. A
very strong overdraft can also cause the stove to over fire. Over firing can cause the stove to
develop extremely high temperatures resulting in possible damage to the stove or a fire. Draft
should never exceed -.08 (inch wc). Over drafting can be controlled by installing a damper in the
stovepipe. This damper can be a barometric or manual damper. It is recommended to have this
damper installed during the stove installation. The damper may be installed in the vertical or
horizontal portion of the stovepipe. The stovepipe damper must be installed and calibrated
according to the damper manufacturer’s instructions.
CAUTION: BE SURE TO FOLLOW ALL LOCAL CODES AND SAFETY
REQUIREMENTS WHEN INSTALLING THE STOVE.
CAUTION: THE USES OF ALUMINUM TYPE B GAS VENT FOR SOLID FUEL
VENTING IS UNSAFE AND PROHIBITED BY THE NATIONAL FIRE PROTECTION
ASSOCIATION CODE
III. Location of Furnace and Installation
WARNING: THE INSTALLATION OF THESE STOVES MUST COMPLY WITH
STATE AND LOCAL REQUIREMENTS AND BE INSPECTED BY THE STATE OR
LOCAL INSPECTOR IF REQUIRED. NOTE: THESE STOVES ARE NOT
APPROVED OR RECOMMENDED FOR USE IN MOBILE HOMES.
The location of the stove is very important for optimum stove performance as well as safety
assurance. When searching for the location of the stove be sure to strictly follow manufacture
r’s
guidelines, clearance to combustible material requirements, local building, and fire codes. Failure
to follow manufacturer
’s instruction and local jurisdiction codes may result in bodily injury, property
damage, fire, or death. Locate the stove where there is sufficient air supply for proper operation to
occur. It is vitally important to locate the stove next to existing forced air furnace as well as next to
the chimney. The closer placement to these two items the better the stove will perform, and
achieve maximum heat flow. The longer the chimney connector pipe (stovepipe) and farther away
the stove is from the chimney the less performance is achieved from the stove.
Please consider the construction and layout of the home to be heated and make placement of the
stove to achieve maximum heat benefit produced by the stove.
Connection of stove to the chimney should be made as directly as possible and not more than two
bends when needed should be used. No reduction in flue pipe below 7 inches diameter heater
outlet should be used. The pipe connecting the stove to the chimney should be at least 24 gauge.
Slope the flue pipe back towards the heater 1/4 inch per foot of horizontal run, so that any
condensation forming in the pipe will be carried back into the heater. The connector pipe should
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