Comfort-Aire FMG****X1E Series - Manual (Page 9)

9
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/
Y2, the air handler will operate using the cooling speed.
With G & Y/Y2 or Y/Y2 is energized, the air handler will
operate in the selected cooling speed (including 40 sec
blower-off delay).
Configuring 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 setting speed. See Table
7 (page 13) for airflow data.
1. Disconnect all electrical power to the unit and remove
the upper door.
2. Change DIP switch according to desired blower speed.
See Table 3 for DIP switches setting.
5 Speed Motor Terminals
Terminal M1 = Low speed
Terminal M2 = Medium Low speed
Terminal M3 = Medium speed
Terminal M4 = Medium Hi speed
Terminal M5 = Hi speed
CAUTION:
To prevent overheating of the air handler, make
sure the DIP switch is not in the M1 position
when the heater is operating at 10kW.
3. Replace the upper door and secure it to the unit.
4. Restore power to the unit.
Thermostat
Thermostat
G R W Y
G R W2 E Y C O
NOTE: Jumper between
W2 & E is required when
no OD T-stat is used.
Grey
White W1
Red R
Green G
R
W2
OD
Stat
C
O
Y
C
Air Handler Heat pump
Typical Heat Pump & Wall Mount Air Handler Connection
Air Handler Air
Conditioner
Typical AC & Wall Mount Air Handler Connection
Grey
C
White W1
Red R
Green G
C Y
Figure 3. Typical Thermostat Connections
SET
HEAT COOL
5 4 3 2 1 1 2 3 4 5
M1 = Low speed Off Off Off Off On On Off Off Off Off
M2 = Med. Low Sp. Off Off Off On Off Off On Off Off Off
M3 = Med. Sp. Off Off On Off Off Off Off On Off Off
M4 = Med. HI Sp. Off On Off Off Off Off Off Off On Off
M5 = Hi Sp. On Off Off Off Off Off Off Off Off On
Table 3. DIP Switch Setting