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Viconics VZ7656E Installation Guide User Manual

Page 22

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22 | VZ7656E1000W Installation Guide

Cool cph

Cooling stages cycles per

hour

Default value = 4 C.P.H.

Will set the maximum number of cooling stage cycles per

hour under normal control operation. It represents the

maximum number of cycles that the equipment will be

turned on and off in the span of an hour.

Note that a higher C.P.H will represent a higher accuracy

of control at the expense of wearing down mechanical

components faster.

3 or 4 C.P.H.

Deadband

Minimum deadband

Default value = 2.0 °F (1.1 °C)

Minimum deadband value between the heating and

cooling setpoints.

Used only with the setpoints used during communication

failure (ComLost Alarm) while operation is under the

return air sensor. If modified, it will be applied only when

any of the setpoints are modified.

2, 3 or 4 °F ( 1.0 to 2.0 °C )

Units
Sets the display scale of the
controller

Default value = Imp

0 = SI for Celsius / Pa pressure scale.

1 = Imp for Fahrenheit / in. WC pressure scale.

fan del
Fan delay
Default value = Off

Fan delay extends fan operation by 60 seconds after the
call for heating or cooling ends.
Valid only for Auto fan mode. “On” fan mode will leave the
fan always on.
Off or On

CO2 ctrl

CO2 Control Type
configuration

Default value = AV_H3

Determines the value of CO2 to be used for control of the
fresh air damper.

Highest: The highest value among the zones with CO2
sensors is used.

AV_H3: The average of the three highest values among
the zones with CO2 sensors is used.

AV_H5: The average of the 5 highest values among the
zones with CO2 sensors is used.

ToccTime
Temporary occupancy time
Default value = 3 hours

Temporary occupancy time with occupied mode setpoints
when override function is enabled
When the Terminal Equipment Controller is in unoccupied
mode, function is enabled with either the menu or DI1 or
DI2 configured as remote override input.
0,1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 & 12 hours

Cal RS
Room air temperature sensor
calibration
Default value = 0.0 °F or °C

Offset that can be added/subtracted to actual displayed
room temperature
± 5.0 °F ( ± 2.5 °C )