1
2
3
4
5
6
7
8
13
THE
ENERGY
FAMILY
(C) IDM Energiesysteme GmbH
Installation instructions TERRA AL Twin
33
1
2
3
4
5
6
Electrical connections
El
ec
trical co
nn
ec
tio
n
6.4. Assigning the inputs on the central unit
The assignment of inputs on the central unit is shown
in the electric circuit diagram relating to the system.
6.5. Confi guration of sensors
Sensor lines are furnished as standard with a line
cross-section of 0.75 mm².
The sensor positions are shown in the respective
installation layout. A perfect function can only be
guaranteed by a correct position and optimal thermal
transition (heat-conductive paste).
If necessary, the sensors can be extended by using
suitable cabling. Ensure a clean corrosion-free con-
nection.
6.7. Flow temperature sensor
The
fl
ow temperature sensor for the heating circuits
used are in any case essential. They are mounted to
the appropriate
fl
ow lines and connected according to
the connection diagram.
The
fl
ow sensors for the heating circuits C-G are con-
nected to the respective heat circuit extension mod-
ule. (see assembly instructions extension module)
The loading sensor (B45) is necessary when the
heatpump is switchen the priority valve (M63).
6.8. Confi guration of outputs
The detailed con
fi
guration of outputs on the central
unit is derived from the electric circuit diagram relat-
ing to the system.
6.9. Connecting the mixers
The ESBE mixers are connected three-pole accord-
ing to the circuit diagram.
Mixer open = brown
Mixer closed = black
6.10. Grounding the system
If the protective conductor is connected properly that
means that the control panel and the housing of the
heat pump are grounded properly.
In the case of maintenance operations, ensure that
the potential equalization is restored properly once
the maintenance has been
fi
nished.
The sensor lines must be laid separately
from the feed lines. (see EMC problems)
6.6. Sensor confi guration
The following sensors are included in the delivery
contents. Depending on the system design following
sensors have to be installed.
- Space heating storage tank sensor (B38)
- Cooling buffer sensor (B40)
- Hygienik sensor (B41)
- Loading sensor (B45)
- Flow sensor heating circuit A (B51)
- Fresh water station sensor (B42)
- Outer sensor (B32)
The sensors have to be set as shown on the piping
schemes.
Together with each heat pump a standard
sensor set is supplied. This is included
and stored in the control cabinet of the
heat pump.
