5
IMPORTANT INFORMATION FOR ALL
CONNECTOR PIPES
Th
e connector pipe must be constructed and installed so that
it maintains clearances, keeps condensation and creosote within
the pipe, and is capable of withstanding a 2100°F degree chim-
ney fi re.
1. At no time should the connector pipe turn downward to-
ward the chimney or run perfectly horizontal. Th
e connec-
tor pipe should slope down toward the furnace a minimum
of 1/4”[0.6cm] per 12”[30.5cm].
2. Th
ere should be no more than two 90 degree elbows.
3. Th
e connector pipe should never be longer than six feet. If
it is absolutely necessary to make a run of more than six
feet (not recommended) use extra support brackets every 3
feet[91cm].
4. Th
e connector pipe should never be reduced to a smaller
size than fl ue opening on the furnace.
5. Th
e connector pipe should not block the fl ue of the chimney
or extend into it in any way.
6. A good airtight thimble should be used to hold the connec-
tor pipe in the chimney. It should be constructed so the con-
nector pipe can be removed for cleaning.
7. Th
e connector pipe should not leave the heated portion of
the building to reach the chimney.
8. Th
e connector pipe should not pass from one story to the
next before entering the chimney, nor should it pass through
any closed or enclosed space.
9. Th
e connector pipe and any elbows must be of 24 gauge or
greater.
10. Th
e connector pipe should not be located near or in a walk
way or well traveled area.
11. All male ends of connector pipe should run or point to-
wards the furnace.
12. Install a cast iron adjustable damper in the fi rst joint of the
connector pipe, nearest to the fl ue collar.
DAMPERS ON STOVE PIPES
When burning coal, we recommend a Barometric Draft Damper
be installed at a safe convenient place between chimney and your
furnace preferably less than 3 feet [91cm] from the fl ue collar.
When you have installed the connector pipe between your fur-
nace and the chimney, tap the pipe hard with your fi ngernail.
Remember the sound it makes - it will be a “ting” echoing inside
the stove pipe. If later you tap and hear a muffl
ed thud, you are
building up soot in the pipe and should clean it. Th
is pipe should
be cleaned at least once or twice during the heating season.
DO NOT CONNECT TWO HEATERS TO THE SAME CHIM-
NEY FLUE. Th
e National Fire Prevention Association recom-
mends that wood burning appliances vent into a separate fl ue
from gas or oil furnaces. If such an installation is contemplated,
fi rst check with a local building inspector to fi nd out if a separate
fl ue for a wood burner is required.
Use of a Barometric Draft Control (when burning wood) is rec-
ommended ONLY in the event your chimney creates excessive
draft leading to an over-fi ring condition.
HEATED AIR DISCHARGE
Th
is furnace is designed for use as a supplemental heating
source. When used as a supplementary furnace, it is connected
in conjunction with an oil, gas, or electric furnace to the existing
duct work which distributes the heated air into several rooms
and/or areas.
Th
ough United States Stove Company expressly Does Not rec-
ommend the use of its furnaces to be installed and/or used as
a free-standing heater, it is possible to achieve a reasonably safe
and functional installation IF certain standard procedures are
followed. Th
e following are guidelines only and are intended to
enable the furnace user to obtain reasonable effi
ciency from his
furnace, and with due respect to safety when installing as a “free-
standing heater”. If installed correctly, and in accordance with
the instructions found in this manual, your warm air furnace
may be installed as a “space heater” within living quarters, cab-
ins, garage, or workshop. Please adhere to the following:
1. Th
e use of a cold air return and/or fi lter box is mandatory.
Th
is will not only increase your blower life and provide fi l-
tered air, it will also help prevent the blower or blowers from
“capturing” heated air exiting from the top of the furnace
heat outlets.
2. If installed as purchased , without directing the heat away
from the furnace itself, it will simply sit and cycle, turning
the blowers off and on. Th
e thermostat may not function
properly.
3. All larger furnaces (or those with multi-speed blowers) ab-
solutely require BACK PRESSURE to prevent premature
motor winding failure. If allowed to operate at high RPM
(As in “FREE AIR” mode - no duct work or fl ow restric-
tions) the windings overheat, insulation melts and the mo-
tor simply burns up - not covered under warranty.
IMPORTANCE OF PROPER DRAFT
Draft is the force which moves air from the appliance up through
the chimney. Th
e amount of draft in your chimney depends on
the length of the chimney, local geography, nearby obstructions
and other factors. Too much draft may cause excessive tempera-
tures in the appliance. Inadequate draft may cause backpuffi
ng
into the room and ‘plugging’ of the chimney.
“Inadequate draft will cause the appliance to leak smoke into the
room through appliance and chimney connector joints.”
“An uncontrollable burn or excessive temperature indicates ex-
cessive draft .”
Take into account the chimney’s location to insure it is not too
close to neighbors or in a valley which may cause unhealthy or
nuisance conditions.
CONNECTING HOT AIR DUCT
TO FURNACE
We strongly recommend that the hot air duct work be installed
by a home heating specialist. If doing the installation yourself,
before you decide which installation will best suit your needs,
consult a qualifi ed heating technician and follow his recommen-
dations as to the safest and most effi
cient method of installation.
Th
e following illustrations are the ONLY acceptable confi gura-
tions when installed with existing oil or gas furnaces.
