Varmeteknikk MB 35, Инструкция по установке, эксплуатации и обслуживанию

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Varmeteknikk AS August 2017 e-mail: post@varmeteknikk.no
10
Remote control by external signals
The boiler offers several possibilities for remote control. With a start/stop signal (potential free),
boiler can be connected/disconnected from running. Maximum output or preset temperature
can be controlled by a 0-10V DC signal.
Remote start/stop of boiler
Boiler can be switched On/Off by an external signal. Before connecting signal, remove bridge on
terminal 1 & 2, see next page. If start/stop-signal is connected and boiler gets start signal, display
shows:
Temp 47.0 (75)°C
Step
0 (30)
Temperature control by 0-10V signal
Desired temperature can be controlled by a 0-10V DC signal. 0V = 20°C, 10 V = 120
C°. Normal
temp. range is from 20 – 95°C, equivalent to 0 - 8,5V. Connection on terminal 30(-) and 31( +)
on PCB (see page 17). Signal must be activated in service menu, see page 12.
"Temp IN" must
be set in ”ON” position. Press + button twice and then E to enter new value.
Temp IN
ON
Press menu button twice to return to "Temp/Power" mode. When signal is activated display
shows:
TempE 47.0(75)°C
Power 60kW
Note! When desired boiler temperature is controlled by a external 0-10V signal, internal set point
must be set as high as boiler should work. Internal thermostat is now working as a maximum
thermostat and limit the temperature. This must be done before signal is activaded.
Power control by 0-10V signal
Boiler output can be controlled by a 0 -10V DC signal. 0V = 0 step, 10V = all steps (15/30). Con-
nection on terminal 29(+) and 30(-) on PCB (see page 17). Signal must be activated in service
menu, see page 12. "
Power IN " must be set in " ON" position. Press + button twice and then
E to enter new value.
Power IN
ON
Press menu button twice to return to "Temp/Power" mode. When signal is activated display
shows:
StepE 3 ( 7)
Step time 40s
Temp 47.0 (75)°C
Step S 0 ( 0)
If start signal is missing,
display shows
: