AirTouch ZoneTouch3, Руководство по установке

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5.4 Spill or Bypass
Spill or bypass mode is a safety feature of the ZoneTouch 3 system to prevent
pressure from building up and causing duct damage. This usually occurs if
someone has turned off all groups while the A/C unit is pumping air into the
system leading to a pressure build-up (and potential of duct puncture, blow-offs
or joints splitting).
It is designed to automatically open dampers if someone attempts to shut down
all dampers thus preventing pressure build up. Spill function opens the groups
chosen as spill groups in the system when all groups are being closed. Bypass
function opens the bypass damper which connects the supply duct to the return
duct directly when all groups being closed. When choosing groups for spill, it is
strongly recommended NOT to use bedrooms as spill groups. During sleep time if
the air conditioner is on and spill groups are forced to open, the spill groups will be
very cold or hot.
There is no dedicated bypass port. Any unused zone ports can be assigned as
bypass ports.
The system will maintain the number of groups chosen as spill groups or bypass
zones open at any time when AC is running. For instance, there will be at least two
groups open if two groups are chosen for spill. The first group in the chosen spill
group list will open first to spill. The opening percentage of the spill group or
bypass zone will march the required percentage to maintain the 100 (one spill
group or bypass zone), 200 (two spill groups or bypass zones) or 300 (three spill
groups or bypass zones) total opening of all dampers in the system.
Spill or Bypass