Product Manual
Thermostat Terminals
Attach the two wall thermostat
wires to the terminals shown.
Chimney Types and Recommendations
See Diagram on page 9.
The chimney system is a critical element in the overall performance of the furnace. An improperly sized chimney, poor drafting chimney,
unlined chimney, or chimney failure may result in unacceptable performance of the system, product failure, and/or re and signicant
loss. Shelter strongly recommends the chimney system be professionally cleaned and inspected prior to installation. Check with local
regulations to conrm whether or not inspection is required prior to installation.
This furnace should only be connected to a clay-lined masonry chimney, masonry chimney with a properly installed SS 6” liner, or metal
all-fuel Class A HT2100 chimney system. Refer to the installation instructions from the chimney manufacturer for proper installation
methods and required clearances. Regardless of your chimney type, a minimum 6” diameter ue is required and at no time may
the chimney be greater than 12” in diameter or exceed a .08 WCI of draft. The ue draft should be conrmed using a draft gauge or
manometer. NEVER CONNECT THE FURNACE TO AN UNLINED CHIMNEY. We strongly recommend the installation of a 6” stainless
steel liner for all systems to maintain a higher ue temperature which minimizes the accumulation of creosote and improves overall
performance.
The connection of the furnace to the existing chimney may be completed using a minimum of 24-gauge single wall black stove pipe or
stainless-steel pipe. NEVER USE GALVANIZED PIPE WHICH WILL GENERATE DEADLY, POISONOUS GASES. The connection
of the furnace to the chimney may never exceed a 60” (5’) horizontal run and must maintain a minimum rise of 2 inches per foot. Never
install more than two (2) elbows when connecting to the existing chimney and the use of 45-degree elbows over one 90-degree elbow is
recommended. For easy cleaning of the chimney system, install a clean-out “T” on the rear of the furnace and never operate the furnace
without a cap installed on the clean-out access.
All piping sections should be fastened together with the proper locking bands or a minimum of three (3) screws per section. The crimped
or male end of all chimney sections should install pointing downward, towards the furnace, to form drip-free connections.
8
B
9. Plug distribution blower into the back of the electrical
control center.
10. Connect the 28-gauge thermostat wire (not included) to
the two (2) posts located on the side of the control center. For
convenience, you might consider locating the wall thermostat
next to your existing thermostat in your home. The thermostat
MUST be installed for the furnace to operate.
11. Plug the 3-pronged grounded plug into a grounded
electrical outlet.
12. With the connection of your chimney pipe and ductwork,
your installation is complete.
5. Mount the forced draft blower to the front of the unit with three 1/4-20 x 3/4” bolts (provided).
6. To install the fan limit control, remove cover, attach with three (3) #8 screws in pre-
drilled holes and replace cover.
7. Mount the electrical control center with four (4) #8 screws (provided).
8. Secure the ex conduit to the side of the furnace using the brackets with #8 screws
(provided).
Attach with three (3) 1/4-20 x 3/4” bolts (provided)
DETAIL
Fan Limit Control
Electrical Control
Center