15
Fan operation
The factory setting for FAN operation is AUTO, with the FAN jumper
(I)
on the middle and lower
pins. In this setting, the fan circuit on “G” is only energized on an active cool call in Gas/Electric
mode or on an active heat call or cool call in Heat Pump mode.
When the FAN jumper is in AUTO, there is no output on “G” with an active heat call in Gas/Elec-
Opposing Call Changeover
The
GEN II-R
controllers are configured at the factory for Opposing Call Changeover with a time delay
setting of 10 minutes. With this configuration, any number of thermostats can make a like active
call (heat or cool). During this time, if a single thermostat makes an opposite call, a timer is started
at the next poll. This timer starts a time delay operation to allow the initial calling thermostats to
satisfy. If the initial active thermostats do not completely satisfy after 10 minutes, the dampers all
close and the controller drops out the HVAC outputs and goes into a 5 minute purge cycle. When
the purge cycle times out, the opposing thermostat call is initiated; and the appropriate HVAC
outputs are energized, and the supply damper opens. The thermostat with the opposing call must
now satisfy before the
GEN II-R
controller will recognize any of the initially calling thermostats.
The opposing call timer is factory adjusted for 10 minutes. However, the delay time can be field
adjusted from 5 to 30 minutes, or disabled.
To increase the opposing call time delay:
1. Press the SET and UP buttons.
2. Release the SET button when the display changes, and continue to hold down the UP
button.
3. Release the UP button when the desired time is displayed.
To lower the time delay:
4. Press the SET and UP buttons.
5. Release the SET button, and immediately press and hold the DN (down) button until
the desired time is indicated; then release.
The Opposing Call feature can be disabled by performing steps 1 through 3 and then releasing the
UP button when the display indicates 32. With this feature disabled, the
GEN II-R
controller will
operate changeover by majority vote from the zone thermostats.
ADVANCED FEATURE CONFIGURATION
tric mode. For constant fan operation place the FAN jumper (I) on the center and upper pins on ON.
