2.4 EXact2 main board
2.4.1 Terminal board on Exact2 main board
The layout drawing below gives an overview of components (st accessory) that can be connected to
the terminal blocks.
Component
Terminal board
connection
Description
BUS
1 - 4
Bus for external parts
BUS
5 - 8
Bus for external parts
TE... + MVM
9 - 19
Taken together, these terminals constitute IHCW, which is used for con-
trolling the HCW coil.
Fire
20 - 21
BT40, BT50, BT70
Smoke detector or other fire detection switch
AUX IN
22 - 23
Same function as Fire
EXT start
24 - 25
If this is closed, the unit will start up
If this is broken, the unit will stop
LSA
26 - 28
LS, exhaust air closing damper
LSAR, exhaust air closing damper with spring return
LSF
29 - 31
LS, outdoor air closing damper
LSFR, outdoor air closing damper with spring return
Alarm
32 - 34
General alarm
AUX OUT
35 - 36
Reserved for future use
3005760-2017-05-03
Installation of the VEX
16/20
Summary of Contents for VEX100CF Series
Page 19: ...3005760 2017 05 03 19 20 ...
Page 20: ......
