Comfort-Aire FMG****F1E Series - Manual (Page 9)

9
Figure 3. Typical Thermostat Connections
G R W
Thermostat
Y
C
Air
Handler
Air
Conditioner
Y
Typical Air Conditioner with
Standard Air Handler
G R C E O Y
Thermostat
Typical Heat Pump with
Standard Air Handler
Heat Pump
NOTE: Jumper between
W2 & E is required when
no OD T-Stat is used.
W1
Y
G
R
C
Air
Handler
W1
Y
G
R
C
R
C
Y
W2
O
W2
Selecting continuous low speed fan operation
(Standard Blower)
The air handler is equipped with the option of continuous
low speed fan operation. When
G is energized without Y,
the air handler will operate using the cooling speed. With
G & Y or Y is energized, the air handler will operate in
the selected cooling speed (including 40 sec blower-off
delay). See Table 7 (page 13) for element sequences.
Configuring the Blower Speed for Multi-Speed
Units
The blower speed is preset at the factory for operation
at the same speed for heating and cooling, by using the
jumping terminal on the blower motor and connecting it
to the desired speed with both the red and black wires
connected to the jumping terminal.
CAUTION:
To avoid personal injury or property damage,
make sure the motor leads do not come into
contact with any uninsulated metal components
of the unit.
For optimum system performance and comfort, it may be
necessary to change the factory set speed. The settings
are listed below.
1. Disconnect all electrical power to the unit and remove
the upper door.
2. Remove the black and red wires from the blower motor
jumping terminal. Discard the blower motor jumping
terminal.
3. Connect the heating speed wire (red) and the cooling
speed wire (black) to the desired blower speed marked
on the terminal block of the blower motor.
Minimum Heating Speed:
018 = Low
024 = High
030 & 036 = Medium
Standard 2 Speed Motors:
Terminal 4 = Hi speed
Terminal 5 = Low speed
Terminal 6 = Not Used
Standard 3 Speed Motors:
Terminal 4 = Hi speed
Terminal 5 = Med speed
Terminal 6 = Low speed
5 Speed Motor Terminals (for FMG-036 units only)
Terminal M1 = Low speed
Terminal M2 = Medium Low speed
Terminal M3 = Medium speed
Terminal M4 = Medium Hi speed
Terminal M5 = Hi speed
4. Replace the upper door and secure it to the unit.
5. Restore power to the unit.