14
Installation Instructions
GB
Option 94 - Con gure digital input switch type, “A” models only,
(option 90 set to 3)
This allows switch type of digital input to be
con gured. Press + until Option 94 is displayed,
use V and Λ to select required setting.
Setting 0 Contacts NC, open circuit contact to force unit into
thermostat mode, short circuit contacts to return to normal
operation
Setting 1 Contacts NO, short circuit contacts to force unit into
thermostat mode, open circuit contacts to return to normal
operation (Factory setting)