SUPREME FEM10-M2301CM-A, Installation Instructions And Homeowner'S Manual

6

4)  Once the current has stabilized, a reading should be 

taken and the anticipator adjusted to that value.  If 
longer heating cycles are desired, the anticipator can 
be set to a higher value 

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 following table as well as the airflow tables based on 
static pressure in the Technical Specifications section of this 
manual. 
 
For the adjustment of the airflow on heating mode, to obtain the 
temperature rise described in the technical specification table on 
p.10,  the orange wire must be positioned on the terminal 
corresponding to the LOW, MED-LOW, MED-HIGH or HIGH 
blower speed.  Blower speed are adjusted in factory for 0.5 inch 
static pressure. 

Supply air adjustment on heating mode 

FURNACE 

INPUT 

POWER 

KW 

HP MOTOR 

STATIC 

PRESSURE 

(in. w.c) 

RECOMMENDED 
BLOWER SPEED 

0.2 LOW 

FEM10 10  1/3 

0.5 LOW 
0.2 MED-LOW 

FEM15 15  1/3 

0.5 MED-LOW 
0.2 MED-LOW 

FEM18 18  1/3 

0.5 MED-LOW 
0.2 MED-LOW 

FEM20 20  1/3 

0.5 MED-HIGH 
0.2 MED-HIGH 

FEM23 23  1/3 

0.5 MED-HIGH 
0.2 MED-LOW 

FEM20 20  1.0 

0.5 MED-LOW 
0.2 MED-LOW 

FEM23 23  1.0 

0.5 MED-LOW 
0.2 MED-LOW 

FEM27 27  1.0 

0.5 MED-LOW 

 
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 factory for 0.5 inch static pressure. 
 

Supply air adjustment on air cooling mode 

FURNACE HP 

MOTOR 

COOLING 

CAPACITY  

(0.5” w.c.) 

RECOMMENDED  
BLOWER SPEED 

1.5 LOW 
2.0 MED-LOW 
2.5 MED-HIGH 

FEM10, 15, 18, 

20 and 23 

1/3 

3.0 HIGH 
2.5 LOW 
3.0 MED-LOW 
3.5 MED-HIGH 
4.0 HIGH 

FEM20, 23 and 

27 

1.0 

5.0 HIGH 

 
If the heating and air-cooling speed are the same, the orange 
wire and the blue wire can be connected on the same terminal 
on the motor. 
 

2.7 INSTALLATION 

OF 

ACCESSORIES

WARNING 

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.