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17.7 Active fan on stand-by
Adjustment is available only on units with stand-by management enabled.
17.7.1
Introduction
The function allows the use of dynamic standby: during standby, reserve units do not turn off the fan, but keep it running at the
speed set in parameter P26.17. When the Priority decides to turn on the units in AFS mode, they return to adjustment mode
and the units that go into stand–by stop and keep the fan running at the speed set in parameter P26.17.
INFORMATION:
If a unit is set to OFF (via keyboard, digital input, BMS, ...) this command will have priority over the Active
Fan on Standby.
As a result, the unit will be switched off completely, including the fans.
17.7.2
Operation
The following functions are used to manage the LAN network:
•
Management of back-up units (Stand-by).
•
Active Fan on Stand-by (AFS).
Both functions manage the LAN network as follows:
1.
Management of the back-up units and their activation is managed by the Stand-by function (P26.03) according to its
own rules (described in the chapter on stand-by management) for switching the back-up units on/off.
2.
Operation of the units in stand-by is managed by the AFS function (P26.16) which controls dynamic stand-by.
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