Plant mode

An internal datapoint "Plant_Mode" 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




30 = fire override

closed

closed