Viconics VZ7656E Installation Guide - Manual (Page 23)

23 | VZ7656E1000W Installation Guide
Cal OS
Outside air temperature
sensor calibration
Default value = 0.0 °F or °C Offset that can be added/subtracted to actual displayed
outside air temperature
± 5.0 °F ( ± 2.5 °C )
H stage
Number of heating stages
installed at RTU.
Default value = 2 stages
Will revert the operation of 2 stage controllers to a single
stage when the second heating step is not needed.
1 or 2 stages
C stage
VZ7656R1000B models only
Number of cooling stages
installed at RTU.
Default value = 2 stages
Will revert the operation of 2 stage controllers to a single
stage when the second cooling step is not needed.
1 or 2 stages
H lock
Outside air temperature
heating lockout
Default value = 120 °F (49
°C) Disables heating stage operation based on outdoor air
temperature.
Function will only be enabled if OS ( outside air
temperature sensor ) is connected.
From -15 °F up to 120 °F (-26 °C up to 49 °C)
C lock
Outside air temperature
mechanical cooling lockout.
Default value = -40 °F (40 °C) Disables cooling stage operation based on outdoor air
temperature.
On economizer model, free cooling will not be disabled by
this function.
Function will only be enabled if OS (outside air
temperature sensor) is connected.
From -40 °F up to 95 °F ( -40 °C up to 35 °C )
2/4event
Number of events
configuration
Default value = 2 event
2 events, will set up scheduling for the following
Event 1 is for Occupied setpoints
Event 2 is for Unoccupied setpoints
4 events, will set up scheduling for the following
Event 1 is for Occupied setpoints
Event 2 is for Unoccupied setpoints
Event 3 is for Occupied setpoints
Event 4 is for Unoccupied setpoints
FA Range
FA range upper limit value
Default value = 0 CFM
Sets the upper limit of the CFM range. This parameter
should be set based on the rooftop unit size. If set to 0
CFM, the fresh air damper control will be based on the
Min/Max CO2 and Min/Max Pos values. See Damper
Position section for more details.
0 to 20 000 CFM (0 to 9438 L/s), 10 or 100 increments