ENGLISH
07.5
BACK PANEL
External probe socket unit (
F
ig
. 1
):
A
Connection for any external contact to turn the water heater
on and off
B
Terminal for remote room probe connection. In this case, the
internal probe must be disconnected.
C
Terminal for water heater temperature probe connection
D
Terminal for high Puffer temperature probe connection
E
Terminal for low Puffer temperature probe connection
F
Terminal for conveyed wave connection between boiler
heater electronic board and any zone module.
G
Terminal for gas boiler connection and for electric by-pass
H
Terminal for external three-way diverter valve connection for
domestic hot water boiler
I
Terminal for conveyed wave connection between boiler
electronic board and any thermostat module (DISPLAY/10).
F
ig
. 1
A
B
C
D
E
F
G
H
I
25
Summary of Contents for MEC 21-18 kW
Page 59: ...ENGLISH NOTE 59...
