44
3.5. Head available
The speed of the circulator is managed automatically by the electronics, based on the settings made in the boiler parameters. It is
possible to choose between two operating modes of the circulator:
1 "Constant ∆T" operation in the operating mode a the circulator speed changes ∆T constant the circulator speed changes to keep
the ∆T between the system delivery and return fixed at a value set in the boiler parameters.
2 Fixed speed operation
In the fixed speed operating mode, the speed of the circulator remains constant at the maximum value
The circulator is set to constant ∆T mode during production.
For correct boiler operation, it is recommended not to change the factory setting.
If it is necessary to change the settings, contact a Service Centre Authorized.
Q
H
0
100 200 300 400 500 600 700 800 900 1000 1100
0
1,0
2,0
3,0
4,0
5,0
6,0
7,0
100%
Play 24 - 28
Q =
Flow rate (l/h)
H = P
available head (m.w.c.)
Play 32
Q = Flow rate (l/h)
H = Pavailable head (m.w.c.)
Room thermostat
Opentherm
External probe
Diet
water heater
3.6.
Electrical connections and wiring diagram
3.6.2. Model
s
Play 24 - Play 28 - Play 32
*
*
ATTENTION: in hybrid systems with SMART GEST system,
connect the terminals to the electrical panel supplied with the hybrid
kits. For more information, refer to the specific SMART GEST
manual
*
