54
KEY
0SCHEMOD27: boiler board
0SCHEINT00: interface board
DK: pressure transducer
SRT: return NTC probe 10 kOhm at 25 °C B=3435
SR1-SR2: CH NTC probe 10 kOhm at 25 °C B=3435
SF: flue gas NTC probe 10 kOhm at 25 °C B=3435
PV: Air pressure switch
Sext: NTC external probe 10K Ohm B=3977
TA1: zone 1 ambient thermostat (use a contact free from potential)
TA2: zone 2 ambient thermostat (use a contact free from potential)
SBC: NTC water heater probe 10 kOhm at 25 °C B=3435
TF: flue gas thermostat
VG: gas valve
P: boiler circulation 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 0CREMOTO04 remote control
PANEL ELECTRICAL CONNECTIONS
1-2: ambient thermostat contact 2
3-4: ambient thermostat contact 1 or opentherm
5-6: external probe
7-8: water heater probe
13-14: ambient probe 1
15-16: ambient probe 2
17: serial input GND
18: serial input 485A
19: serial input 485B
20: serial input +5V
21: relay neutral
22: 'normally closed' phase
23: 'normally open' phase
X7 X6 X5 X4 X3 X2
Ambient
probe 1
Ambient
probe 2
N
F
n.c.
F
n.a.
external
communication
10K Ω probe
at 25°C β 3977
10K Ω probe
at 25°C β 3977
G ND 485A 485B +5V
relay which can be freely
programmed co φ1
3 1 2
C N_E
C N_H
C N_A
AC C 1
C N_I
C N_M
C N_L
C N_J
C N_D
C N_B
C N_C
J P 1
X14
P
VG
MDV
bk HE AT
V
X4
X3
X5
1
2
3
4
DK
C N_L
C N_I
C N_M
C N_A
C N_E
C N_C
C N_D
S F S R 1 S R 2
TF
E
S R T
230V a.c
C onn_F
C onn_E
C onn_C
C onn_B
C onn_A
C onn_D
C N_J
0S C HE MOD27
BACK 0S CHE INT00
QUATOUCH00
bw DHW
bl
X2
TA2
Sext
0CREMOTO04
TA1
SBC
CONNECTION WIRING
DIAGRAM
ELECTRICAL CONNECTIONS TO BE MADE BY THE INSTALLER
TA (PIN1 and 2): ambient thermostat 2 contact
(PIN 3 and 4): ambient thermostat 1 contact or Opentherm Remote Control
Sext (PIN 5 and 6): NTC external probe 10K Ohm at 25 °C B=3977
(PIN 13 and 14): ambient probe 1
(PIN 15 and 16): ambient probe 2