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THE
ENERGY
FAMILY
(C) IDM Energiesysteme GmbH
Installation instructions TERRA AL Twin
23
1
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T
T
P
T
M
T
T
T
M
T
T
T
M
FIL
B32
B61
B51
M73
B3
B3
8
8
M31
M41
B34 B33
B54
B64
B53
M44
M
M
M43
M34
M33
B63
B14
RE
OS
FS
HC(A)
Note: This is onl
y
a tentative suggestion for installing an IDM heat pu
m
p in the heating s
y
ste
m
. This suggestion replaces no
professional planning of an executing co
m
panie! On part of IDM-Energies
y
ste
m
e can no warrent
y
be taken concerning the
function of the whole s
y
ste
m
!
TERRA AL Twin
HC-
m
odule
internal
Heating Buffer
electrical cabinet
Heating connections
H
ea
ting co
nn
ec
tio
n
s
5.2. TERRA AL Twin with heating buffer and mixed heating circles
The TERRA AL Twin is only used for heating. There is
no requirement for domestic hot water.
The heatpump itself is located outside of the build-
ing. All other components (electrical cabinet, loading
pump, safety devices ...) are situated indoor.
One heating circuit can be regulated as standard. For
2 or more heating circuits an appropriate additional
regulation module has to be installed.
In the heating return the included
fl
ow switch must be
installed before the heat pump.
All hydraulic connection lines should be kept as short as possible. The maximum length should
be not more than 35 m.
The hydraulic connection lines have to be insulated very good. The hydraulic pipes must be
installed underneth the frost line.
