Viconics VBZS Engineering Guide Specifications - Manual (Page 6)

The controller shall have the ability to set the programmed occupied schedule time as the time at
which the desired occupied temperature setpoints will be attained at the zones. The controller
shall automatically optimize the equipment start. This progressive recovery feature can be
enabled or disabled.
The controller must have a programmable digital input that can be setup for the following
functions:
1. Service: a backlit flashing “SERVICE” alarm will be displayed on the
controller LCD screen when the input is energized.
2. Filter: a backlit flashing “FILTER” alarm will be displayed on the controller
LCD screen when the input is energized. The input can be tied to a
differential pressure switch to monitor filter status.
3. Remote NSB: Timer clock input for remote night-setback. This function shall
automatically disable the internal scheduling.
4. Remote OVR: Temporary occupancy remote contact. This function shall
disable all override menu functions.
The controller shall have “Smart Fan” operation to reduce energy consumption during unoccupied
periods.
The controller shall a fan delay that extends fan operation by 60 seconds after calls for heating or
cooling stage operation ends (can be enabled or disabled by the local keypad).
The controller shall have a configurable SPST output relay that can be used for lighting, exhaust
fan or fresh air control.