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028-0323-02_LIT-VZ7656R&VZ7656H_W-E01_EN
September 2019
10. Insert each wire according to wiring diagram.
11. Gently push excess wiring back into hole (fig. 3).
12. Re-Install wiring terminals in their correct locations (fig. 3).
13. Re-install the cover (top side first) and gently push extra wire length back into
the hole in the wall.
14. Install security screw.
T
HEORY OF
O
PERATION
The VZ765 series uses a Viconics proprietary adaptive logic algorithm to control the space
temperature. This algorithm controls the heating and or air conditioning system to
minimize overshoot while still providing comfort. It provides exceptional accuracy due to its
unique PI time proportioning control algorithm, which virtually eliminates temperature
offset associated with traditional, differential-based on/off thermostats.
Fig.2 - On/Off mechanical control vs. PI electronic control.
Features overview
•
7 day schedule models, 2 or 4 events.
•
Supports up to 120 zones per system WITHOUT any network wires.
•
Gas/oil or electric system compatibility for all type of applications.
•
Rooftop Unit and Heat Pump models available.
•
Remote outdoor sensing capability for added flexibility.
-
System mode heating and cooling lockout.
-
Heat pump balance point settings.
-
Zone perimeter reheat lockout.
•
Remote discharge air sensor input for monitoring and control purpose.
-
System efficiency feedback.
-
Discharge high limit heating lockout.
-
Discharge low limit cooling lockout.
Remote return air sensor input for monitoring control.
-
System efficiency feedback.
-
Return high limit heating lockout.
-
Return low limit cooling lockout.
-
Communication lost control function.
•
Password protected configuration menu and lockable keypads for security.
•
A configurable digital input for added flexibility. The input can be configured as the
following:
None:
No function will be associated with the input.
Service:
a backlit flashing
Service
alarm will be displayed on the Terminal
Equipment Controller LCD screen when the input is energized. It can be tied in
to the AC unit control card, which provides an alarm in case of malfunction.
Filter:
a backlit flashing
Filter
alarm will be displayed on the Terminal
Equipment Controller LCD screen when the input is energized. It can be tied to a
differential pressure switch that monitors filters.
