Polyaire Zonemaster Unipoint RF, Инструкция пользователя и руководство по установке

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ZONEMASTER UNIPOINT RF DAMPER CONTROL SYSTEM - Setup Guide Page
5) Spill/Bypass Air Setpoint
Spill/Bypass air is primarily used to relieve duct pressure for the safety
of the ducting. Such a control is achieved by comparing the system
requirement with a setpoint. The factory default is in spill mode and the
setpoint is 30% of total zones open, which is equivalent to 30% of the
total airflow across the fan coil.
When allocating an address to each zone in spill mode, it is strongly
recommended to give lower addresses to those zones that have higher
spill privileges. These zones are normally located closer to the return air.
The lower the address, the higher the spill privilege the zone has.
When the spill setpoint is reached, the main control board instructs zone 1
to open as spill. If the first spill zone cannot satisfy the spill air control, the
zone 2 will be instructed to open to spill excess air. This process will
continue until the spill air setpoint is satisfied in the system. Such a spill
air control strategy implemented in the Zonemaster UniPoint RF control
system requires the installer to allocate the zone 1 near the return air grilles.
Spill mode uses the zones with lowest address in the system as spill zones
that will be automatically forced to turn on if the total open zones are less
than the setpoint. For example, a 5-zone system without constant zone
needs 1 zone to be open as a minimum requirement to prevent pressure
building up and duct damage. The spill setpoint can be specified as 20%.
In bypass mode
, a bypass damper is used to return the air directly to the
duct if the total open zones are less than the setpoint. It should be
connected to the 8th zone on the main control board.
1)
At the setting mode in ‘Parameter’ screen,
press or button to select ‘Safety Spill’
2) Press button to select spill or bypass mode.
3)
Press and button to change the spill/bypass
setpoint to its desired value.
The adjustable range is from 0% to 50%.