Temperature remote control 2 … 10 V
▶
Connect analogue setpoint signal 2 … 10 V to input N1 (see Ch. 5.6.1).
✓
Signal is interpreted as supply setpoint.
3 V
Minimum flow temperature (P
30
)
10 V
Maximum flow temperature (P
31
)
2 … 3 V
Burner off
<2 V
Signal fault (after ca. 15 minutes
W89
)
A maximum of six extension modules (WCM-EM) can be installed if a control signal
is connected at input N1.
Temperature remote control 4 … 20 mA
It is possible to use input N1 as current input 4 … 20 mA. To do this, a switchover
must be made via a jumper on the circuit board.
DANGER
Electric shock when working with voltage applied
The consequence is serious injury or death.
▶
Isolate unit from mains prior to carrying out work.
▶
Switch off system.
▶
Remove housing cover from connection box.
▶
Change over red jumper
1
on circuit board.
X8
4 ... 20 mA
2 ... 10 V
Installation and operating instruction
Gas condensing boiler WTC-GB 90-A
6 Operation
83266502 • 1/2010-08 • La
45-95
