Installation | 3-33
Combustibles remote calibration unit connections
If you have the combustibles option (and a combustibles RCU), you must
also make the following connection (see Figure 3-23):
SPAN2 - 17 on RCU
For a WDG-IVCM with RTD-type combustibles detector, you make the
following connection:
SPAN2 - 17 on RCU
For a WDG-IVCM with hot-wire detector, Remote Calibration Unit connects:
SPAN2 - 17 on RCU
SPAN3 - 18 on RCU
Remote cal
switch normally
open (dry
contact closure)
All common wires
to pin 16 on RCU
and valve commons
on control unit
Overall braided shield
or rigid metal conduit
Figure 3-23. Series 2000 controller RCU connections.