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1.1.2 Standby Alarm Logic – Within a zone one or more units may be designated as STANDBY
(STDBY) units which are only available when required by an alarm condition. The Zone Master is
designed to detect alarm conditions and to activate standby units as necessary.
Note: Standby unit activation and deactivation are independent of other zones
The user may assign one or more alarms as “Standby Alarms” by selecting Y (yes) in Zone Master
Alarms page (see Zone Master Set-Up). The Zone master temporarily activates standby units to
supplement units that have experienced one or more Standby Alarms per the following rules:
• For each unit in a zone that experiences a Standby Alarm, a standby unit will activated (if
available) in that zone
• Once activated, each activated standby unit remains ON until the Standby Alarm has gone
away and for fi fteen minutes (adjustable) thereafter.
1.1.3 Off Alarm Logic – Within each zone one or more units may be designated as Standby
(STDBY) units which are only available when required by an alarm condition. The Zone Master is
designed to detect alarm conditions and to activate standby units as necessary.
Note: - Standby unit activation and deactivation are independent of other zones.
- Off alarm and standby alarm selection can not be duplicated.
The user may assign one or more alarms as “OFF” by selecting Y (yes) in Zone Master Alarms
page (see programming and selections section). The Zone master temporarily activates standby
units to supplement units that have experienced one or more OFF alarms per the following rules:
• Whenever an ON unit is on by the Zone Master (OnbyZM) experiences an OFF Alarm, the
Zone Master immediately reconfi gures the unit to OFF (OffbyZM). If there are any standby
units available in the affected zone, the Zone Master reconfi gures the standby unit with the
lowest identifi cation (ID) number ON and changes its status to ONbyZM (on by Zone Mas-
ter).
• Any reconfi guration accomplished by the Zone Master in response to Off Alarms continues
until the user manually changes the status setting through the Zone Master’s menus.
• The last ONbyZM unit in the zone will remain on even when an Off Alarm is detected.
1.1.4 Zone Inhibit Control Logic – Logic stops units within the same zone from engaging in coun-
terproductive heating and cooling or humidifi cation and dehumidifi cation at the same time in the
same zone. Reheat is not considered in the Inhibit Logic since it only accompanies dehumidifi ca-
tion.
The logic in enabled by selecting YES for the Inhibit Control in the Zone Master (see programming
and selections section).
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