Viconics VZ7260X Installation Guide - Manual (Page 24)

24 | VZ7260B Series - Installation Guide
Pband
Proportionnal band setting
Default is : 3
Adjust the proportional band used by the controller PI
control loop.
Warning. Note that the default value of 3.0 °F (1.2 °C)
gives satisfactory operation in most normal installations.
cases. The use of a superior proportional band is different
than the factory default is normally warranted in
applications where the controller location is problematic
and leads to unwanted cycling of the unit. A typical
example is a wall mounted unit where the controller is
installed between the return and supply air feeds and is
directly influenced by the supply air stream of the unit.
Value F scale
Pb d
C scale
Pb d
3 3 F 1.7 C
4 4 F 2.2 C
5 5 F 2.8 C
6 6 F 3.3 C
7 7 F 3.9 C
8 8 F 4.4 C
9 9 F 5.0 C
10 10 F 5.6 C
Heat max
Maximum local heating
setpoint limit
Default: 90 °F (32 °C)
Maximum local occupied heating user setpoints
adjustments.
Heating setpoint range is:
40 to 90 °F (4.5 to 32.0 °C) (Increments: 0.5° or 5°)
Cool min
Minimum local cooling
setpoint limit
Default: 54 °F (12 °C)
Minimum local occupied cooling user setpoints
adjustments.
Cooling setpoint range is:
54 to 100 °F (12.0 to 37.5 °C) (Increments: 0.5° or 5°)
DisMinPo
Enable / Disable damper
minimum position
Default : On
Enables or disabled the damper minimum position
(parameter Min PO) if the controller cooling or heating
demand is not the same as the zone sequence. Example:
if controller calls for heating and the zone sequence is
Cool (sent by the VZ76xx master controller).
On = Enable Minimum Position
Off = Disable Minimum Position