Cn1 Et Cn2 Parameters; Final Instructions For Commissioning - DeDietrich MIT-M /E Installation, User And Service Manual

6 Commissioning
6.4

Final instructions for commissioning

46 MIT-M
6.3.1

CN1 et CN2 parameters

The CN1 and CN2 parameters are used to configure the heat pump based
on the type of back-up and the output of the outdoor unit installed.
Tab.30 Configuration numbers without immersion heater, hydraulic
back-up
Output of the outdoor unit
6 kW
8 kW
11 kW
Tab.31 Configuration numbers with immersion heater, electrical back-up
Output of the outdoor unit
6 kW
8 kW
11 kW
(1) The default value of the Backup type parameter (HP029) is 2.
1. Check that the following installation components are switched on
correctly:
Circulating pumps
Outdoor unit
Heating back-ups
2. Check the setting of the thermostatic mixing valve (for domestic hot
water production).
3. Shut down the heat pump and carry out the following operations:
After about 10 minutes, vent the air in the heating system.
Check the hydraulic pressure on the user interface. If necessary,
top up the water level in the heating system.
Check the fouling level of the filter(s) present both in the heat pump
and on the installation. If necessary, clean the filter(s).
4. Restart the heat pump.
5. Explain how the system works to the users.
6. Hand over all manuals to the user.
CN1 CN2
16 7
18 7
20 7
CN2
CN1
(1)
15 7
17 7
19 7
7756241 - v02 - 19062020