8
00243
Basic Connections
SEC-Le
230v Supply
3Amp Fused Spur
EM Stop Buttons,
Thermal links
(Normally closed)
For multiple, connect in
series.
Pressure Sender unit
mounts on to the body of the gas
valve
(Required)
Gas Solenoid
Live feed through the
Medem CM2M-K2 channel
current Monitor
fans
Fan speed
controls
Fan live
Supply
Fire Alarm
Requires a volt
free NC contact
Where using 3 phase fans
interlock on a single phase
See page nine
Earth Connections not shown
0-10v output for
connecting to a fan
speed controller
Two core low voltage connection
6 core low voltage
+/- 12v Power
S1 = Supply Fan N/C contact
E1 = Extract Fan N/C contact
Fan Interlock Connections
4 Core
connection
Medem
Gas detectors
Multiple,
connect in
parallel
