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TABLE 5
Heating Fan Off Delay
Delay (Seconds)
Switch 1
Switch 2
60
Off
Off
90
Off
On
120
On
Off
180
On
On
Switch 3 − Second Stage Delay (Used with Single−Stage
Thermostat Only) −−
This switch is used to determine the
second stage on delay when a single−stage thermostat is
being used. The switch is factory−set in the ON position,
which provides a 10−minute delay before second−stage
heat is initiated. If the switch is toggled to the OFF position,
it will provide a 15−minute delay before second−stage heat
is initiated. This switch is only activated when the thermo
stat selector jumper is positioned for SINGLE−stage ther
mostat use.
Switch 4 − Cooling Fan off Delay −
The fan on delay time
of 2 seconds is not adjustable. Fan off time (time that the
blower operates after the cool demand has been satisfied)
can be adjusted by flipping dip switch 4. The unit is shipped
with a factory fan off setting of 45 seconds. Fan off time will
affect comfort and is adjustable to satisfy individual ap
plications. See table 6 for cool fan off time settings.
TABLE 6
Cooling Fan Off Delay
Delay (Seconds)
Switch 4
2
Off
45
On
Diagnostic LED’s (DS1 and DS2)
Two diagnostic LED’S are located on the two−stage inte
grated control board. See figure 14. These light flashes
correspond with the codes detailed in table 10.
Factory Installed Jumper Y1 to Y2
A factory−installed jumper from Y1 to Y2 terminals on the
integrated control board terminal strip must be removed for
two−stage cooling.
TWO−STAGE INTEGRATED CONTROL BOARD
FIGURE 14
THERMOSTAT CONNECTIONS (TB1)
DIP
SWITCHES
1 − 4
LEDs
FACTORY−
INSTALLED
JUMPER
DIP SWITCH(ES)
FUNCTION
1 and 2
Blower Off Delay (Heating Mode)
3
Second Stage ON Delay (Single−stage t’stat)
4
Blower Off Delay (Cooling Mode)
SENSOR