ZONEMASTER MAXIPOINT V2 - Turbo Group Functionality

ZONEMASTER MAXIPOINT V2 DAMPER CONTROL SYSTEM - Installation Manual
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The factory default is set in spill mode and the
  set-pointis30%.Whenthesetpointisreached
  forspill,thescreenshows‘SPILLCONTROL’
and some of the lower order zones remain open
and will not respond to ON/OFF operation.
Similarly if bypass set point is reached the
  screendisplays‘BYPASSCONTROL’asshown
  intherightgure.
a) Atthesettingmodein‘Parameter’screen,
press or button to select
   ‘SafetySpill’.
b) Press button to select Spill or
Bypass mode.
c) Press or button to change
   thespill/bypassset-pointtorequired
   value.Theadjustablerangeisfrom0%
   to50%with10%increments.
IMPORTANT: DO NOT set spill/bypass set-point to 0% unless there is
  apermanentopenzoneusedasspillzone.Otherwise,therewillbe
no spill zone when all zones are closed and damage may be caused
  byhighpressurebuildupinsideductsifairconditionerisrunning.
5) Turbo Group
The Turbo function will give the selected group
  afull-openingwhilealltheothergroups
(dampers) opening positions are reduced by
  50%oftheirbalancedvalue.Thiswillbringa
large volume of extra air into the designated
area and cool or heat the area quicker. Typically
  thismaybeafamily-room,diningroomorhome
theatre (or in commercial application a meeting,
lunch or board room). (See Grouping Zones
section for how to group).