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Integrated Control DIP Switch Settings
This special edition of ML196E, ML193Eand ML180E
units are equipped with a two-stage integrated control.
This control manages ignition timing, heating mode fan off
delays and indoor blower speeds based on selections
made using the control dip switches and jumpers. The
control includes an internal watchguard feature which
automatically resets the ignition control when it has been
locked out. After one hour of continuous thermostat
demand for heat, the watchguard will break and remake
thermostat demand to the furnace and automatically
reset the control to relight the furnace.
Heating Operation DIP Switch Settings
Switch 1 -- Thermostat Selection --
This unit must be used with a single -stage thermostat
only. Ignition control is factory set with DIP switch 1 in the
“OFF” position, and must be left in “OFF” position. This
allows unit to use motor speed tap connected to “Low
Heat” terminal of ignition control for heating application.
Switch 2 -- Second Stage Delay
This furnace is designed for single stage heating and
cooling only in a heat pump. The second stage delay DIP
switch SW2 must be in the “OFF'” position.
Indoor Blower Operation DIP Switch Settings
Switches 3 and 4 -- Heating Mode Blower-Off Delay --
The blower-on delay of 30 seconds is not adjustable. The
blower-off delay (time that the blower operates after the
heating demand has been satisfied) can be adjusted by
moving switches 3 and 4 on the integrated control. The
unit is shipped from the factory with a blower-off delay of
90 seconds. The blower off delay affects comfort and is
adjustable to satisfy individual applications. Adjust the
blower off delay to achieve a supply air temperature
between 90° and 110°F at the exact moment that the
blower is de-energized. Longer off delay settings provide
lower supply air temperatures; shorter settings provide
higher supply air temperatures.Table 5 provides the
blower off timings that will result from different switch
settings.
TABLE 5
Blower Off Heating Mode Delay Switch Settings
Blower Off Delay
(Seconds)
Switch 3 Switch 4
60 On Off
90 (Factory) Off Off
120 Off On
180 On On
Switch 5 -- Cooling Mode Blower-Off Delay-- The unit
is shipped from the factory with the dip switch positioned
OFF for a 45 second delay. Table 6 provides the cooling
mode off delay settings.
TABLE 6
Blower Off Cooling Mode Delay Switch Settings
Blower Off Delay
(Seconds)
Switch 5
45 (Factory)
Off
2 On
Switches 6 and 7 -- Continuous Fan Mode --
Continuous fan speed can be controlled by changing DIP
switch positions. Table 7 below provides DIP switch
settings for continuous fan mode. See page 1 “Indoor
Blower Speeds” for speed tap selection for optimum
continuous fan performance.
TABLE 7
Continuous Fan Mode
Selection For
Continuous Fan
Switch 6 Switch 7
Low Heat Speed OFF OFF
Low Cool Speed OFF ON
High Heat Speed ON OFF
High Cool Speed ON ON
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