U.S and Foreign Patents & patents pending
© Copyright 2004 by Arzel
®
Zoning Technology, Inc.
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GENERAL OPERATION INFORMATION
THERMOSTATS
The Zonocity™ Arzel
®
Zone Control™ is compatible with any standard 24VAC thermostat: Wireless, Auto/Manual
changeover, Programmable/Non-programmable, Heat/Cool or Fan/Auto/On sub-base switching.
If the thermostat has an adjustable heating anticipator (mechanical thermostats), set it to the shortest or lowest setting.
Heat pump thermostats are required for heat pump operation.
Set up the thermostat to call
Y,G in heating: Y,G,O in cooling.
Equipment Notes
The mini-pump,
located in the bottom of the enclosure, runs anytime there is a call from any thermostat. It
creates both pressure and vacuum. On a call from any thermostat, the logic board will energize the solenoid valve(s)
for non-calling zone(s) and make the appropriate dry contact relays
to start the HVAC equipment.
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Dampers open with vacuum.
Dampers close with pressure.
The logic board is designed for heating to have priority over cooling and cooling
to have priority over fan operation.
When all thermostats are satisfied, the air pumps, the HVAC equipment, and the
solenoid air valves are de-energized. Dampers will remain in whatever position
they were in when the last thermostat call was finished. Leaving the dampers
open in the last zone served allows the HVAC system to utilize the residual
energy in the system at the end of both the heating and cooling cycles.
The Manual Pump Switch (MPS™) is provided to run the pump continuously.
Turning the MPS switch to ON manually makes the pump relay and the pump
starts, driving all dampers open. This creates a failsafe. If the board fails the
dampers can be easily opened and the system run from one thermostat.
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