T
H E
P O W E R
F A M I L Y
(C) IDM ENERGIESYSTEME GMBH
8. Allgemeine Beschreibung
Installation instructions Terra CL
42
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b
rown
b
rown
w
h
ite
DZ (B
3
)
w
h
ite
Volume flow
HGL flow
Volume flow
h
eating flow
GND
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2
V DC
9
5
DZ (B
2
)
In each heat pump a standard sensor
set is included in the delivery, which is
supplied in the control cabinet of the heat
pump.
Electrical connection
El
ec
trical co
nn
ec
tio
n
8.6. Layout of the Inputs on the Central Unit
The sensor inputs on the central unit are described in
the electrical wiring.
8.7. Sensor design
Sensor lines have a cable cross section of 0.75 mm²
as standard.
The sensor positions are shown in the relevant in-
stallation diagram. Reliable operation can only be
ensured by correct positioning and good heat transfer
(heat conducting paste).
If necessary, the sensors can be extended using a
suitable cable. It must be ensured that the connection
is clean and corrosion-free.
8.7.1. Sensor equipment
The following sensors are contained in the scope
of delivery or are already installed and, in any case,
required:
- Air heat exchanger sensor (B72)
- Heat pump fl ow sensor (B33)
- HGL fl ow sensor (B35) (only for the HGL design)
- Buffer tank sensor (B39)
- Air intake sensor (B37)
- Flow sensor heating circuit A (B51)
- Sensor Hygienik (B41)
- Sensor tap water (B42)
- Outdoor sensor (B32)
(All other sensors are optional depending on the sys-
tem equipment).
8.7.2. Flow temperature sensor
The fl ow temperature sensors for the heating circuits
used are required in every case. They must be con-
nected on the corresponding fl ow lines and in accord-
ance with the connection diagram.
The fl ow sensors for the heating circuits C-G are
connected on the respective heating circuit expan-
sion module. (see the installation instructions for the
expansion module for more information)
8.8. Impulse Inputs
When using fl ow meters in the heat pump fl ow to
measure the heat volume, these are connected as
follows:
For installation and confi guration of the Navigator
control, see fl ow meter installation instruction.
8.9. Layout Digital Inputs
The sensor inputs on the central unit are described in
the electrical wiring.
Sensor lines should be run separately
from mains cables (see EMC issue).
