Sime FORMAT.zip 5 25 BF TS - SYSTEM HEAD AND ZONE HEATING WIRING

80
IT
ES
PT
GB
3.8 HEAD AVAILABLE
TO SYSTEM
Residual head for the heating system is
shown as a function of rate of flow in the
graph in fig. 17.
To obtain the maximum head available to
the system, turn off the by-pass by turning
the union to the vertical position (fig. 17/a).
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 will be con-
nected.
Connect micro switches or relay contacts
on terminals 15-16 of the “TA” connector
of the electronic card after removing the
existing jumper (fig. 18).
0
200
1600
140012001000800600400
PORTATA (l/h)
PREVALENZA RESIDUA (mbar)
500
400
100
200
300
30-35
25
Format.zip - Format.zip 5
600
30-35
25
By-pass inserito
By-pass escluso
FLOW RATE (l/h)
RESIDUAL HEAD (mbar)
L
CR1
CR
Connettore "TA"
Fig. 18
By-pass inserito
By-pass escluso
Fig. 17/a
N
TA
TA
1
VZ
R
VZ1
R1
NOTA: I relé ven
g
ono im
p
ie
g
ati solo nel ca
s
KEY
TA-TA1 Zone room stat
VZ-VZ1 Zone valve
R-R1 Zone relay
CR-CR1 Relay contact or micro zone valve
NOTE: Relays are used only if the area
valves have no microswitches.
“TA” connector
By-pass on
By-pass off
By-pass on
By-pass off
Fig. 17