Ducts And Filters; Supply Air Adjustments; Installation Of Accessories; Humidifier And Electronic Air Cleaner - SUPREME FEM10-M2401AM-B Guide D'installation

Figure 8: 2-stage thermostat, electric heating and air
conditioning
2.5.2.

Ducts and filters

The ducts must be sized such a way as to accommodate the
specified airflow and the available static pressure. Refer to
the applicable local and/or national installation codes.
Insulate the ducts that lead through non-heated areas. Use
flexible supply and return air connectors to avoid the
transmission of vibration. To make the unit run even quieter,
the installer should:
1. Use two elbows between each outlet and the supply and
return air plenum;
2. Cover the vertical sections of the supply and return air
duct with soundproofing material;
3. Use baffles in short radius elbows;
4. Use flexible hangers to suspend the ducts.
The SUPREME furnace is equipped with a filter frame for the
blower compartment. It must be installed on the outside of
one of the three sides or the bottom of the furnace. Once
the location of the installation has been determined, use the
four square knockouts for ease of cutting the opening.
A heat pump or an air conditioner can be added to this
furnace, in either the supply or return air duct. Carefully
follow the instructions provided with these appliances to
ensure proper installation and hook-up to the electric
furnace. Refrigerant and drainage pipes must in no way
hinder access to the furnace panels.
2.6

SUPPLY AIR ADJUSTMENTS

On units equipped with 4-speed blower motors, the supply
air must be adjusted based on heating/air conditioning
output and the static pressure of the duct system. For the
desired airflow, refer to the Table 1 and 2, as well as the
Tables 4 and 5 for the airflow based on static pressure.
For the adjustment of the airflow on heating mode, to obtain
the temperature rise described in the technical specification
table (Table 3), the red wire must be positioned on the
terminal corresponding to the LOW, MED-LOW, MED-HIGH
or HIGH blower speed.
factory for 0.5 inch static pressure.
For the adjustment of the airflow on air-cooling mode, to
obtain a sufficient airflow (350 to 450 CFM per Ton), the blue
wire must be positioned on the terminal corresponding to the
LOW, MED-LOW, MED-HIGH or HIGH blower speed.
Blower speeds are adjusted in
Blower speeds are adjusted in factory for 0.5 inch static
pressure.

Table 1: Supply air adjustment on heating mode

INPUT
FURNACE POWER
KW
FEM10 10
FEM15 15
FEM18 18
FEM20 20
FEM23 23
FEM20 20
FEM23 23
FEM27 27

Table 2: Supply air adjustment on air cooling mode

FURNACE HP MOTOR
FEM10, 15, 18,
1/3
20 and 23
FEM20, 23 and
1.0
27
If the heating and air-cooling speed are the same, the red
wire and the blue wire can be connected on the same
terminal on the motor.
2.7

INSTALLATION OF ACCESSORIES

Electrical shock hazard.
Turn OFF electrical power at the fuse box or service
panel before making any electrical connections and
ensure a proper ground connection is made before
connecting line voltage.
Failure to do so can result in death or bodily injury.
2.7.1.

Humidifier and electronic air cleaner

This unit is equipped with a 120 VAC terminal for the
connection of accessories up to a maximum of 2 amps. A
humidifier and an electronic air cleaner can be wired to
terminals "1" and "2" of the unit.
diagrams in this manual.
transformer can be installed for accessories using 24 VAC.
A separate power source must be used if the accessories
draw more then 2 amps.
Certain accessories require control relays. A location has
been set aside in the unit for the installation of relays: a 24
VAC (part number L01H009). In addition, a 24 VAC relay
can be wired between terminals "W1" and "C" to be activated
6
STATIC RECOMMENDE
HP
PRESSUR
MOTOR
E (in. w.c)
0.2
1/3
0.5
0.2
1/3
0.5
0.2
1/3
0.5
0.2
1/3
0.5
0.2
1/3
0.5
0.2
1.0
0.5
0.2
1.0
0.5
0.2
1.0
0.5
COOLING
RECOMMENDED
CAPACITY
BLOWER SPEED
(0.5" w.c.)
1.5
2.0
2.5
3.0
2.5
3.0
3.5
4.0
5.0
WARNING
Refer to the wiring
A field supplied 120/24 VAC
D BLOWER
SPEED
LOW
LOW
MED-LOW
MED-LOW
MED-LOW
MED-LOW
MED-LOW
MED-HIGH
MED-HIGH
MED-HIGH
MED-LOW
MED-LOW
MED-LOW
MED-LOW
MED-LOW
MED-LOW
LOW
MED-LOW
MED-HIGH
HIGH
LOW
MED-LOW
MED-HIGH
HIGH
HIGH