Plant mode

An internal datapoint "PlantMode" from the plant mode strategy modules is decoded to provide the required damper output signals, according the table below.


Plant mode

outside air damper    

exhaust air damper

0 = off

closed

closed

1 = optimum start

auto

auto

2 = night cycle

auto

auto

3 = night purge

auto

auto

4 = occupied period

auto

auto

5 = extended operation

auto

auto

6 = delayed switch off

auto

auto




11 = duty cycling

closed

closed




20 = frost protection

closed

closed

21 = fan failure

closed

closed

22 = overheat protection electric heaters

closed

closed

23 = emergency stop

closed

closed




30 = fire override

closed

closed