83
3.9
ELECTRICAL WIRING
OF ZONE HEATING SYSTEMS
When installing a system of this type, use a
separate electrical line to which room ther-
mostats with their local valves or pumps
will be connected.
Connect micro switches or relay contacts
on terminals 10-11 of the
“TA”
connector of
the electronic card after removing the exi-
sting jumper (fig. 18).
L
N
TA
TA
1
VZ
R
VZ
1
R
1
NOTA: I relé vengono impiegati solo nel caso
le valvole di zona siano prive di micro.
CR
1
CR
Connettore "TA"
L
N
TA
TA1
P
R
P1
R1
CIRCUITO CON VALVOLE DI ZONA
CIRCUITO CON POMPE DI ZONA
Fig. 18
CIRCUIT WITH ZONE PUMPS
CIRCUIT WITH ZONE VALVES
NOTE: Relays are used only if the area valves have
no microswitches.
KEY
TA-TA1 Zone room stat
VZ-VZ1 Zone valve
R-R1
Zone relay
CR-CR1 Relay contact or micro zone valve
P-P1
Zone pump
“TA” connector
