40
the on delay can be reduced to 0 seconds and the off delay
can be extended to 180 seconds.
If the limit switch trips at the start of the heating cycle
during the evaporator on delay, the time period of the on
delay for the next cycle will be 5 seconds less than the time
at which the switch tripped. (Example: If the limit switch
trips at 30 seconds, the evaporator--fan on delay for the next
cycle will occur at 25 seconds.) To prevent short--cycling, a
5--second reduction will only occur if a minimum of 10
minutes has elapsed since the last call for heating.
The evaporator--fan off delay can also be modified. Once
the call for heating has ended, there is a 10--minute period
during which the modification can occur. If the limit
switch trips during this period, the evaporator--fan off
delay will increase by 15 seconds. A maximum of 9 trips
can occur, extending the evaporator-fan off delay to 180
seconds.
To restore the original default value, reset the power to the
unit.
To shut off unit, set system selector switch at OFF
position. Resetting heating selector lever below room
temperature will temporarily shut unit off until space
temperature falls below thermostat setting.
Ventilation (Continuous Fan)
Set fan and system selector switches at ON and OFF
positions, respectively. Evaporator fan operates
continuously to provide constant air circulation. When the
evaporator-fan selector switch is turned to the OFF
position, there is a 30--second delay before the fan turns
off.
FASTENER TORQUE VALUES
See Table 15 for torque values.
Table 15 – Torque Values
Supply fan motor mounting 120 +/ --- 12 in ---lbs
Supply fan motor adjustment plate 120 +/ --- 12 in ---lbs
Motor pulley setscrew 72+/ --- 5 in ---lbs
Fan pulley setscrew 72+/--- 5 in---lbs
Blower wheel hub setscrew 72+/ --- 5 in ---lbs
Bearing locking collar setscrew 65---70 in---lbs
Compressor mounting bolts 65---75 in ---lbs
Condenser fan motor mounting bolts 2 0 + / --- 2 i n --- l b s
Condense r fan hub setscrew 8 4 + / --- 1 2 i n --- l b s
48LC
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