Plant mode

An input "PlantMode" connected to the plant strategy macro is decoded to provide the required fire damper reaction. The table below shows the fire damper overrides depending on the plant mode.
Fire overrides have the highest priority over plant mode overrides.


Plant mode

Fire damper

0 = off

auto

1 = optimum start

auto

2 = night cycle

auto

3 = night purge

auto

4 = occupied period

auto

5 = extended operation

auto

6 = delayed switch off

auto



11 = duty cycling

auto



20 = frost protection

auto

21 = fan failure

auto



30 = fire override

to fire position