INS_SEFL-I 0610
Location
You must install the furnace on a dry and solid base, in an area free of flammable liquids or vapors and combustible materials. You must indicate to the fur-
nace’s user the location of the switches and disconnects. He must be able to quickly identify them in case of an emergency. Moreover, the furnace should be
located as centrally as possible in the area to heat in order to optimize air dissipation in all the rooms.
Clearance
This furnace is approved for ‘‘
zero inch
’’ clearance. Meaning that you can install it directly against a wall. Ducts can also be installed with a zero inch clear-
ance (
0 inch
). From 37 inches, this clearance can be reduced to
0 inch
. Please refer to the codes effective in your region if you have any questions concern-
ing clearances.
Since it is necessary to open the front door to perform the furnace maintenance inspection, you must leave at least a
24-inch
clearance in front of this door.
Ducts and filters
Ducts must be designed to deliver airflows to 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;
All “SEFL” 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.
Optional accessories
The furnace is equipped with all devices required for the addition of an air-conditioner or heat pump (except the heat-cool thermostat). The refrigerant and
drainage pipes must be installed either in the furnace’s supply or return duct and should not prevent you from removing the front door of the furnace.
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.
ELECTRICAL CONNECTIONS OF THE FURNACE
Note that this product must be connected by a qualified electrician according to the electrical and building codes effective in your region.
This furnace must be connected to a 208/240 volt power source. For 240V power supply, either copper or aluminum wires can be used, except for 27 and 30W
models where only copper wire can be used (
see appendix 1
). If you want to energize the furnace at 208 VAC, you must change a connection on the trans-
former’s terminal board (
see appendix 1
). Refer to the local and national electrical codes to know which wire size, fuses and circuit breakers are required.
You can also connect a 24 VAC humidifier directly at the 24 VAC power supply of the furnace, i.e. on R and C terminals of the terminal block.
N.B. To prevent the humidifier from operating when ventilation is not activated, some manufacturers offer a ventilation detector (optional). If
this option is not available, you must connect the humidifier on W1 and C terminals of the terminal block. In this case, the humidifier will
only operate when the blower (in the heating mode) is activated.
ELECTRICAL CONNECTION OF THE THERMOSTAT
The thermostat must be mounted on a connection box, at around 1.5 m (5 feet) above the floor level, on a section of the wall exempt from pipes or air ducts.
Do not install
the thermostat in a location where temperature measurements could be altered. For example:
- close to a window, on an external wall, or close to a door leading outside;
- exposed directly to the light or heat of the Sun, a lamp, a fireplace or any other heat source;
- close or in front of an air outlet;
- close to concealed ducts or a chimney; and
- in a location with poor air flow (e.g. behind a door), or with frequent air draft conditions (e.g. head of stairs).
Seal the wall openings in order to minimize the draughts which can alter temperature measurements. Read the user’s guide of the thermostat carefully and
refer to the following illustrations to connect the thermostat.
C
G
R
W
W1
W2
R
G
Y
C
THERMOSTAT
ELECTRICAL CONNECTION FOR
ELECTRONIC THERMOSTATS (PLEASE
VALIDATE THE CONNECTIONS WITH THE
MANUFACTURER OF THE THERMOSTAT
)
ONE STAGE THERMOSTAT
ELECTRIC HEAT ONLY
ELECTRIC FURNACE