Checking The Electrical Connections - DeDietrich MIT-M /E Installation, User And Service Manual

5 Installation
Fig.37
230V~
2 kW
HP029=1
2-6 kW
HP029=2
400V 3N~
4 kW
HP029=1
4-8 kW
HP029=2
400V 3N~
8 kW
HP029=1
HP029=2
400V 3N~
HP029=1
4-12 kW
HP029=2
Tab.28
Access Parameter
Air Src Heat Backup type (HP029) Type of backup used in the heat pump
23.5
pump >
Parameters,
counters, signals >
Adv. Parameters
42 MIT-M
4. Position the bridge or bridges.
4
Important
The bridges can be found in a bag affixed to the inside of the
6
indoor unit.
5. Feed the electrical back-up power supply cable into the cable duct
reserved for the 230/400 V circuit cables.
6. Connect the power supply cables using the push buttons.
L1: Live 1
L2 : Live 2
L3 : Live 3
N: Neutral
: Earth
7. Configure the heat pump parameters
On
Description
For more information, see
CN1 et CN2 parameters, page 46
5.7.12

Checking the electrical connections

1. Check the mains electricity connection to the following components:
Outdoor unit
Indoor unit
Electrical back-up
2. Check the connection between the indoor unit and the back-up boiler.
3. Check that the BUS cable is correctly positioned between the indoor
unit and the outdoor unit, and that it is separate from the power supply
cables.
4. Check the conformity of the circuit breakers used:
Outdoor unit circuit breaker
Indoor unit circuit breaker
Electrical back-up circuit breaker
Back-up boiler circuit breaker
5. Check the positioning and connection of the sensors:
Room temperature sensor (if present)
Outdoor temperature sensor
Flow sensor for the second circuit (if present)
6. Check the connection of the circulating pump(s).
7. Check that the wires and terminals are properly tightened or
connected to the terminal blocks.
8. Check the separation of the power and safety extra-low voltage
cables.
9. Check the connection of the underfloor heating safety thermostat (if
used).
Adjustment required
1: 1 Electrical Stage
2: 2 Electrical
Stages
7756241 - v02 - 19062020