Additional Zone Master Features - Data Aire dap4 Supplement Manual

The following rules apply:
• Cooling/Heating
o The Inhibit Logic can only be infl uenced by units that are within 3°F of the average mea-
sured zone temperature. This prevents a unit with mis-calibrated sensor from causing
an inhibit function. Units set to OFF mode are not included in the average.
o If any unit within the zone is currently cooling or starts cooling, then all other units within
the zone are inhibited or prevented from continuing or starting heating.
• Humidifi cation/Dehumidifi cation
o The Inhibit Logic can only be infl uenced by units that are within 5% of the average mea-
sured zone humidity. This prevents a unit with mis-calibrated sensor from causing inhibit
function. Units set to OFF mode are not included in the average.
o If any unit within the zone is currently dehumidifying or starts dehumidifying, then all
other units within the zone are inhibited or prevented from continuing or starting humidifi -
cation.
NOTE: An "EXCLUDED" message will display on the Zone Master when a unit is excluded from
the zone by temperature or humidity calibration.
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Additional Zone Master Features:

• Sync Slaves TSP (synchronize the units' temperature setpoint) – With the Zone Master
enabled, under Menu B: Setpoints, users can synchronize the temperature setpoint
and deadband of the Master unit to all its units in the zone by selecting YES at the Sync
Slaves TSP selection. Individual units' setpoint can be changed at its own controller.
• Sync Slaves Clock (synchronize the slave unit's clock) – With Zone Master enabled,
under Menu C: Clock/Scheduler, users can synchronize the clock of the Master to all its
units in the zone by selecting YES at the Sync Slaves Clock.
• Primary vs. Secondary Schedule – Users have the option to operate the Zone Master
under a secondary schedule. The user can select the number of units to run in the sec-
ondary schedule and when. The scheduler in the Zone Master will take over the Set-
back Schedule in Clock/Scheduler of Menu C.
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