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Occupied / Unoccupied 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. This applies to both Occupied and
Unoccupied modes. When the FAN jumper is in AUTO, there is no output on “G” with an active
heat call in Gas/Electric mode.
•
Constant Fan in the Occupied (DAY) mode – Place the FAN jumper
(I)
on the center and
upper pins on ON. The fan output on “G” will be constant in the Occupied (DAY) mode and will
revert to auto in the Unoccupied (NIGHT) mode.
Opposing Call Changeover
The
GEN II
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 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
controller will
operate changeover by majority vote from the zone thermostats.
Priority active Heat and Cool call operation
The
GEN II
controller may be configured in the field for majority vote changeover but also assign
multiple votes for selected thermostats to enhance the changeover operation for special
requirements. Each thermostat represents one vote for heat or cool operation; a majority of active
calls will determine which mode the controller will operate in. With the Priority feature, any
thermostat may be assigned one or more additional votes to allow it to have priority to bring a mode
changeover more quickly. To keep proper overall temperature control, this priority vote change
should be limited to as few zones as possible. Follow the procedure to implement Priority vote
operation:
ADVANCED FEATURE CONFIGURATION
