40
Installation instructions
3.22 - DUAL-STAGE MASTER
PANEL BOARD code 38778
14 Main switch with indicator light
16 General fuse
18 Burner switch
19 P1 system pump switch (cascade)
The main switch 14 powers the board and the equipment
connected to it.
The switches 18 and 19 control the burner and P1 pump if the
boiler operates in cascade.
The switches 20 and 21 control the Z1 pump (direct) and Z2
pump (mixed).
The working temperature of the boiler is regulated by the heating
controller: to achieve this, the thermostat must be placed at
maximum full-scale pos. 33 .
Modulation of the burner will be managed by heat control.
The electric power line of the boiler’s control board must have
a switch with protective fuses.
For use of the panel board, see the system manager instruction booklet
As far as the practical connection and operating diagrams are concerned, see the
documentation supplied inside the panel board code 38778
20 Pz1 direct zone system pump switch
21 Pz2 mixed zone system pump switch
33 Working thermostat
35 Safety thermostat
The heating controller probes (boiler, storage tank, external,
flow) are included in the supply; the ambient probes 1 and 2
are optional; the mixer valve and relative control motor are not
included in the supply.
Should ambient probes be mounted (optional), the room tem-
perature will only be determined with the boiler curve set by
the program.
Should 2 boilers in cascade be mounted, see chapters 3.25,
3.26, 3.27.
3.23 - PROGRAMMING
HEATING CONTROLLERS WITH
SINGLE BOILER
For that which concerns adjustment and programming of the
heating modules, see the instruction booklets attached to the
individual heating controller.
The following are the default parameters which “cannot be
modified”.
As far as parameters which can be programmed by the user
according to his requirements, see the system manager
instruction book.
14
15
16
17
35
33
34
18
19
20
21
22
23
21.0
20
Ser
vizio
Data/Or
a/V
acanz
e
Visual Inf
.
Utente
Prog
r.T
empo
T
ecnico
Impianto
Acqua Calda
Circuito r
isc.
I
Solare/MF
Circuito r
isc.
II
°C
OK
1
2
1
2
>1s
-
+
°C
°C
°C
BUS ID
1/2/11/Mod
Run
2
1
fig. 29
