53
KeY
0SCHeMoD27: boiler PCB
0SCHeINT00: interface PCB
DK: analogue water pressure switch
SRT: return NTC probe 10 kOhm at 25 °C B=2435
Sm1-Sm2: heating NTC probe 10 kOhm at 25 °C
B=2435
SF: flue NTC probe 10 kOhm at 25 °C B=2435
TF: flue gas thermostat
VG: gas valve
P: circulator boiler pump
MDV: electric deviating valve
e: ignition/flame detection electrode
V: brushless fan
aCC1: ignition transformer
Cn_a-Cn_m: signal/load connectors
X2-X7: ground connectors
0CRemoTo04: Opentherm Fondital remote control
0SondaeS01: external probe to be used with Remote
Control (p/n 0CREMOTO04, optional)
Panel eleCTRICal ConneCTIonS
1-2: ambient thermostat contact 2
3-4: ambient thermostat contact 1 or opentherm
5-6: external probe
7-8: boiler Water cylinder probe
9-10: boiler solar probe
11-12: solar collector probe
13-14: timer/cylinder thermostat if a water cylinder
probe is not present
17: serial input GND
18: serial input 485A
19: serial input 485B
20: serial input +5V
21: relay neutral
22: ‘normally closed’ phase relay (NC)
23: ‘normally open’ phase relay (NA)
3.6.9.
Wiring diagram for forced circulation solar system with CH only boiler
Parameter setting
P03
P17
P18
3
2
1
SONDA BOLLITORE
SOLARE
SONDA BOLLITORE
CALDAIA
FORMENTERA
KR 32
SONDA ESTERNA
MORSETTI 5 - 6
MORSETTI 3 - 4
TERMOSTATO
AMBIENTE
RETE IDRICA
MORSETTI 7 - 8
MORSETTI 9 - 10
MORSETTI 11 - 12
MORSETTI 21 - 22 - 23
M
MORSETTI 15 - 16
fig. 31
3.6.10.
Multifunction relay connecting diagram
fig. 32
AMBIENT
THERMOSTAT
EXTERNAL PROBE
TERMINALS 5 - 6
TERMINALS 7 - 8
TERMINALS 21 - 22 - 23
TERMINALS 3 - 4
TERMINALS 11 - 12
TERMINALS 9 - 10
CYLINDER - BOILER
PROBE
DOMESTIC WATER SYSTEM
SOLAR CYLINDER
PROBE
TERMINALS 15 - 16
