Biddle DF2 Installation, Operating And Maintenance Manual page 23

DF M
ANUAL
CONTACT CLOSED
unit operates normally (by remote control)
Installation, Operating And Maintenance Manual version 1.0 (16-08-2023)
2.7.3 External control inputs
The inputs are suitable for potential-free switches, which can
be connected using a 2-core cable.
n
Note:
Leave approximately 20cm of slack in the cable
above the unit to make serving the unit easier in the
future.
d
Danger:
Do not connect any power supply to the
contact. This could damage the circuit board.
Input IN0
A door contact switch or building management system can be
connected to input IN0.
• This connector is fitted with a bridge on delivery.
Working of the input
CONTACT OPEN
• the fans and heating continue as normal for 15
secs.
• then the fans run for another 2 min. at medium
speed and the heating is switched off.
• finally the fans switch off.
Input IN1
A door contact switch or weather-responsive control can be
connected to input IN1.
• The function of IN1 is determined by DIP4 in the unit
(door contact switch or weather-responsive control).
• This connector is fitted with a bridge on delivery.
en
I
NSTALLATION
en-23