DeDietrich EMC-M 30/35 MI Service Manual Page 35

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4.10 Electrical diagram
R000291-A
P
230V, 50Hz
L N
MAINS
1 32
BR
BL
GN/
YW
PC
RS232
1
2
1
2
1
22
3 1
PSU
TATRFS
HL
6 7 8 9 10 11 12 131 2 3 5
SENSORS
E
IT
IT
HMI
MAINS
SENSORS
PUMP PWM
PUMP
3WV
RS232
PUMP
PUMP A
1 2 3
BK
BL
GN/
YW
3WV
3WV
1 2 3
BK
BL
BR
1 3 2
PUMP
1 2 3 4
BK
BK
PWM
PUMP
RS232
Connecting a computer
PUMP A
Shunt pump
TR
Return sensor
IT
Ignition transformer
3WV
3-way valve
TA
Flow sensor
E
Ignition/ionization electrode
HL
Safety thermostat
PSU
Storage parameter
P
Power supply
FS
Flow switch
HMI
Connection box
4.11 Filling the system
4.11.1. Water treatment
In most cases, the boiler and the central heating installation can be
filled with normal tap water and no water treatment will be necessary.
WARNING
Do not add chemical products to the central heating water
without first consulting a water treatment professional. For
example: antifreeze, water softeners, products to increase
or reduce the pH value, chemical additives and/or
inhibitors. These may cause faults in the boiler and
damage the heat exchanger.
Rinse the central heating installation with at least 3x the
volume of the central heating installation. Flush the DHW
pipes with at least 20 times the volume of the pipes.
For an optimum functioning of the boiler, the water of the installation
must comply with following characteristics:
EMC-M 24 EMC-M 24/28 MI EMC-M 30/35 MI EMC-M 34/39 MI
4. Installation
131112 - 7602023-02
33
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