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THE
ENERGY
FAMILY
(C) IDM Energiesysteme GmbH
Installation instructions TERRA AL Twin
29
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T
T
T
T
T
M
T
T
T
M
B54
B64
B53
M44
M
M
M43
M34
M33
B63
T
T
T
M
T
P
T
FIL
FIL
T
T
M
P
A
B
Hygienik
TERRA AL Twin
OS
HW
CW
RE (A)
HC (A)
FS
Buffer
Note: This is only a tentative suggestion for installing an IDM heat pump in the heating system. This suggestion replaces no
professional planning of an e
x
ecuting companie! On part of IDM-Energiesysteme can no warrenty be taken concerning the
function of the whole system!
TERRA AL Twin
Slave
heating only
Master
heating and hot water
HC-modul
internal
Throttle valve
Control cabinet
Master
Control cabinet
Slave
B61
B51
M31
M41
B38
B38
B38
B41
B41
B41
B42
B1
B32
M63
M73
B45
B34
B33
M73
B34
B33
3
M22
M
M
B14_2
B14_1
Heating connections
H
ea
ting co
nn
ec
tio
n
s
5.8. TERRA AL Twin cascade system with Hygienik without layer seperate plate and heating buffer
The Master heat pump is able to work in priority- and heating mode, the slave heat pump works only in heating
mode. For loading the Hygienik, there is only used the Master unit.
Master heat pump (operating in priority mode) and slave heat pump (operating in heating mode) can work at
the same time.
In the heating return the included
fl
ow switch must be installed before the heat pump.
Up to
fi
ve TERRA AL Twin heat pumps could be used in a cascade system. Every TERRA AL Twin
have to own a seperate electrical cabinet.
