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7
Low voltage connections
Number 1/2 – CAN communication
The
CAN
cable
should
be
connected
in
series
with
the
heat
pumps.
Observe
the
termination
jumpers
on
the
circuit
board
in
the
heat
pumps.
Only
the
last
in
the
series
should
have
termination
jumpers
mounted.
The
CAN
‐
cable
also
have
a
shield
that
should
be
connected
on
all
points,
both
heat
pumps
and
in
the
Exotrol
Multi
.
No
other
cable
than
approved
CAN
‐
BUS
cable
is
allowed.
No
termination
No
termination
No
termination
T
ermination
Heatpump
1
Heatpump
2
Heatpump
3
Multi
‐
LogiQ
Not terminated
Terminated
Number 3/4 – Outdoor sensor
Outdoor
sensor
must
always
be
installed
and
should
be
placed
heading
north.
Number 5/6 /7/8– Room sensor 1
Room
sensor
1
is
arbitrary
to
install.
If
installed
it
can
adjust
the
set
heating
curve
for
heating
system
1
and
thereby
improve
system
efficiency.
However,
it
demands
a
central
place
in
the
building
in
order
to
function
well.