Local Outputs Tab
Page 36 of 84 eZFC-424R4-24 Application Guide
Edition 2.6
Always
Constant
The fan always runs regardless of the heating or cooling
demand in the space.
Occupied/
Unoccupied
The fan runs constantly during the occupied and unoccupied
override occupancy modes. Outside of these modes, the fan
runs intermittently.
Occupied/
Unoccupied
Override/
Standby
The fan runs constantly during the occupied, unoccupied
override occupancy and standby modes. Outside of these
modes, the fan runs intermittently.
Always
Intermittent
The fan does not run constantly at all and only turns on when
heat is required.
l Manual Fan Occupancy Interlock. Select On if you want a manual fan command to
act as an occupancy signal. Otherwise select Off if occupancy is determined by a
schedule. This field is not applicable for VAV and VVT systems. Note: If you select On,
you need to set up FanSpdCtrl on the Inputs tab or a Fan Select button on your
LINKnet network sensor.
l HeatxFanMin/CoolxFanMin. These fields display the fan speeds that will run at a
specific heat or cooling stage ("x" is the stage number). For ductal heat/cool outputs,
with multi-speed fans, "1" is the default value. With ECM fans, FanMinSpeed (see the
section below) is the default value. "0" is the default value for non-ductal outputs.
When you modify these values, the fan speed associated with that output is changed.
For example, if you enter “3” in Heat2FanMin, the fan will respond to the heating
demand at Heat 2 stage by increasing to fan speed 3.
For HeatCoolx output stage, both the Heatx and Coolx fan minimums are set
together.
For more information about the interlock fields, see the fan sequence of operations
help topic.
l FanMinSpeed. The minimum supported supply fan speed. This field is enabled when
you select analog control type for supply fan with a default value of 20%. When you
select a binary control type for a single or multi-speed fan, this field displays the
minimum supported fan speed with a default value of 1 for ductal fans.
l FanMaxSpeed. The maximum supported supply fan speed. This field is enabled
when you select analog control type for supply fan with a default value of 100%. When
you select a binary control type for a single or multi-speed fan, this field displays the
maximum supported fan speed.
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