25
3.4 -
PANEL BOARD TYPE 30688
DESCRIPTION OF FUNCTIONS
Through the main switch 11 the panel board
and the ancillary equipments connected to it
are powered.
The switches 12 and 13 control the
respectively the burner and the heating pump
of the mixed zone.
The switches 14 and 15 control the heating
pump of the direct zone and the storage tank
pump.
Through the thermostat 32 the boiler working
temperature is adjusted.
The minimum temperature thermostat, placed
under the plug 34 keeps OFF the heating
pump during the starting of the boiler till the
boiler temperature reaches 30°C.
On the supply line to the boiler panel board
a double pole fused switch has to be fitted.
3.3 -
INTRODUCTION OF THE
ELECTRONIC PANEL BOARD
TYPE 30688
The TRIOPREX-N boilers can be supplied
with an electronic panel board complete with
a digital outer compensator with built-in
microcomputer and permanent memory.
The management of the boiler is made through
the outer compensator which, in addition to
the burner and pump control, can control also
two different heating zones.
The automatic operation is made on the base of
the data detected by the boiler, D.H.W. storage
tank, outer, room and flow temperature sensors.
This last sensor will be fitted only when a
mixing valve is fitted.
The outer compensator is capable to control
several heating system configurations:
- one direct zone C.H. system without mixing
valve: the flow sensor has not to be fitted;
the outer compensator controls only the
pump of the C.H. system No. 1.
- one zone C.H. system with mixing valve:
the flow sensor has to be fitted downstream
the mixing valve; the outer compensator
controls the pump of the C.H. system No. 2.
- two zone C.H. system: one direct and one
with mixing valve; the outer compensator
controls the direct pump of the C.H. system
No. 1, the mixing valve and the pump of the
mixed C.H. system No. 2.
The outer compensator sensors (boiler,
storage tank, outer and flow) are included in
the supply; the room sensors for the C.H.
systems No.1 and No. 2 are optionals.
The mixing valve and the relevant motor are
not supplied by Unical.
When the room sensor is not fitted (it is
optional), the room temperature is determined
and controled only by the heating curve of
the outer compensator program.
The electronic panel board type 30688 is
supplied as standard with the outer
compensator, type 30680, already fitted.
If two boilers in cascade are fitted, please
get in touch with our after sale service.
31 High limit thermostat
32 Working thermostat
41 General fuse
42 Boiler thermometer
fig. 31
11 Illuminated main switch
12 Burner switch
13 C.H. pump switch for mixed zone
14 C.H. pump switch for direct zone
15 D.H.W. tank loading pump switch
31
42
11
41
12
13
32
14
15
16
17
35
33
34
18
19
20
21
22
23
21.0
20
T-
ambiente
1
T-
ambiente
2
T-
economia
T-
Acqua
San.
Cur
va
Riscald.
1
Cur
va
Riscald.
2
V
acanz
e
Or
a
Prog.
Riscald.
P
ar
ametr
i
