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