DeDietrich AWHP 6 MR Installation And Service Manual page 69

AWHP MIT-IN iSystem
24/09/2012 - 300027606-001-01
Heating sensor
CN20
HP setpoint
CN2A
Machine fault
CNX2
Defrosting
CNX4
Compressor - ON
CNX3
Electrical back-up - Domestic hot water
ECS
6.3A fuse
F6.3AT
Display
HMI
PCB connector
J-
Live
L
Auxiliary electrical power supply
L1, L2,
L3, D3,
N
Neutral
N
Primary control unit
PCU
Resistance
Res
Relay
RL.
bus
S2, S3
Domestic hot water sensor
SONDE
ECS
System sensor
SONDE
SYST
Room sensor A, B, C
SONDE
AMB A,
B, C
Outlet sensor B, C
SONDE
DEP B,
C
Outside sensor
SONDE
EXT
Titan Active System
TA
Terminal block interface board
TB6,
TB142
Safety thermostat
TS
3-way valve
V3V
PCB connector - PCU
X-
HP pump
X25
Outlet sensor
X28
Flowmeter
X29
Pressure gauge
X30
Through-feed terminal unit
XA
DIEMATIC iSystem control panel PCB
SCU
General switch
ZG
DHW circuit reversal valve
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4. Installation
68