Viconics VT8600 User Interface Guide - Manual (Page 23)

VT8600 Series 23 User Interface Guide
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Viconics Technologies Inc. 9245 Langelier Blvd. Saint-Leonard, Quebec, Canada, H1P 3K9 I +1 514 321 5660
028-0441-00 www.viconics.com November 2014
PARAMETER DETAILS SCREEN 5/9
Configuration Parameters Default Value Significance and Adjustments
Heat stages
Number of heating stages.
Applicable to 2 stage models only
Default value:
2 stages
Will revert the operation of 2 stages Terminal Equipment Controller to single
stage operation only when the second heating step is not needed.
1 or 2 stages
Cool stages
Number of cooling stages
Default value:
2 stages
Will revert the operation of 2 stage Terminal Equipment Controller to single
stage operation only when the second cooling step is not needed.
1 or 2 stages
Econo. config
Economizer configuration
Default value:
Off
Controls the activity of the economizer functionality
On Economizer is activated
Off Economizer is deactivated
ChngOvr Sp
Changeover setpoint
Default value:
55 °F (13.0 °C)
In Cooling mode.
The outside air temperature value at which the cooling will be switched over
from mechanical (compressor) to free cooling (economizer)
14 to 70 °F (-10.0 to 21.0 °C)
Mech cooling
Mechanical cooling allowed
Default value:
Off
In Cooling mode.
Allows the operation of the mechanical cooling if the free cooling (economizer)
cannot maintain the cooling setpoint.
Off Typically applies when the MS (mixed air temperature sensor) is installed
after the mechanical cooling refrigeration coils. In this case, mechanical cooling
will never operate at the same time as free cooling.
On Typically applies when the MS (mixed air temperature sensor) is installed
before the mechanical cooling refrigeration coils in the mixing plenum. In this
case, mechanical cooling is allowed when the free cooling (economizer opera-
tion) cannot maintain the cooling setpoint.
Off or On