21ECL-PTU-207 Preloaded Applications
nviChgOver (nviFP17)
This input is used to control the heat/cool operation when using 2 pipes change-over systems.
When this variable is used, it has priority over nviSourceTemp and all locally connected inputs.
State Value ChangeOver Mode
0 N/A Cool
1 0 Cool
1 1 to 100 Heat
-1 N/A Unused
ID Units Default Value
nviFP17 SNVT_switch 0% / -1
nviDewPtSensor (nviFP18)
This input is used to receive a dew point sensor value.
When condensation occurs on cooling pipe, this network value can stop the cooling valve operation.
When this variable is used, it has priority over a locally connected input.
Upon return to normal of this network value, a delay is started before enabling the cooling valve.
This delay can be adjusted using DewPointSensorDelay (nciCn01_07/ConstantNum5), the default
value is 600 sec.
State Value Cooling Valve
0 N/A Enable
1 0 Enable
1 1 to 100 Disable
-1 N/A Enable
ID Units Default Value
nviFP18 SNVT_switch 0% / -1
nviWindowContact (nviFP20)
This input is used to receive window contact status.
When connected to nvoWindowContact of slave controllers using Fan-In bindings, the master con-
troller will automatically validate if a window is open in the zone.
The controller will then output this value using nvoEnergyHoldOff to be able to shutdown the slave
units when a window is open. The locally connected window contact is processed in conjunction with
nviWindowContact to calculate nvoEnergyHoldOff.
As soon as an Open value is received nvoEnergyHoldOff will be set to 1,100.
If no other Open value is received during the next 150 seconds, nvoEnergyHoldOff will be set to 0,0.
Therefore, the MaxSendTime of the nvoWindowContact network variable of the other controllers must
be set to a value lower than 150 seconds to make sure that the controller will receive an update before
the end of the timer.
State Value Window
0 N/A Close
1 0 Close
1 1 to 100 Open
-1 N/A Close
ID Units Default Value
nviFP20 SNVT_switch 0% / -1
Variables
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