1 2 3 4 5 6 7 8 9 10 11 12
NC
NO
C
W
W
m
z
48
24-CONNECTIONS
• Puffer thermostat
To activate this option, connect a Normally Open (N.O.) contact thermostat to points 1 and 2 of the back 9 pole terminal board.
Even with this configuration the purpose of the room probe on the stove is only to control the heating system pump controlled by the
potential free contact on terminals 7-8-9.
Connections table.
TERMINAL NO. NAME ON BOARD
FUNCTION
1-2
NTC2
HIGH PUFFER PROBE - PUFFER THERMOSTAT
3-4
NTC1
ROOM PROBE - ROOM THERMOSTAT
5-6
NTC3
STORAGE TANK PROBE - STORAGE TANK THERMOSTAT-
MEDIUM PUFFER PROBE
7-8-9
AUX RELAY (Potential-free-contact -Maximum
contact voltage - 24V AC/DC)
7 - NORMALLY CLOSED
8 - NORMALLY OPEN
9 - COMMON
10-11-12
3-WAY RELAY (Mains voltage contacts)
POS.10 - DHW (F)
POS.11 - COMMON (N)
POS.12 - HEATING (F)
To access terminal block “W”, remove the cap as reported in part 1 of the manual (in the paragraph devoted to the removal of the back
panel). Then loosen the two screws “z”
and take out terminal block “W”. Perform
the necessary connections and place
everything back.
The NTC probes must be 10 K Ω B3435,
the thermostats must have a dry contact.
Summary of Contents for SUITE-CLUB-MUSA Hydromatic 18 M2
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