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INSSFECMI0914
DuCTs AnD fiLTers
Ducts must be designed to deliver the correct airflow at the specified external static pressure . You should insulate the ducts crossing non-heated
areas. Moreover, use flexible return and supply connectors in order to avoid vibrations as much as possible. To make your furnace even quieter,
follow these instructions:
1. Cover the vertical return and supply ducts with soundproofing material;
2. Install at most one or two elbows between registers and the return and supply connectors;
3. Install flexible hangers to suspend the ducts;
4. Install baffles in elbows with a small curvature radius.
All “SFECM” series models are equipped with a filter rack (including the filter) that you will find on top of the furnace. You can install this rack on
one of the three external sides of the furnace or at its bottom. Using snips, cut the selected rack opening following the slots and holes, and screw
the filter rack on it.
PLenum TemPerATure ConTroL PoTenTiomeTer
The Stelpro electric furnace is equipped with a plenum temperature sensor. You can select the plenum temperature set point with a potentiometer
installed on the control card. The default factory set point is 45°C (113°F). You can select the set point from a temperature range between 40°C
(104°F) and 70°C (158°F).
oPTionAL ACCessories
The furnace is equipped with all the devices required for the addition of an air-conditioner or a heat pump (except the heat-cool thermostat). The
refrigerant and drainage pipes must be installed either in the furnace supply or return duct and should not prevent you from removing the door in
front of the furnace.
You can also install a thermostat with an outdoor sensor or a two-stage thermostat to control your furnace. To do so, you must refer to the
instructions supplied with the thermostat (see also the illustrations on following page) as well as the furnace wiring diagram.
When the electric furnace is used in combination with a wood heating unit, you must connect the thermostat of the wood heating unit across low
voltage terminals R and G of the furnace. This thermostat will automatically turn the blower of the furnace on.
N.B. please note that if one of these accessories is installed, you must refer to the appropriate guide.
