91
Terminals
Function
Explanation
X3.10
X3.11
Fault message, lag heat
pump in a cascade
or
Jumper
Floating contact required:
■ Closed: No faults
■ Open: Fault
■ Breaking capacity 230 V~, 0.15 A
If a message contact is connected, no
jumper should be installed.
X3.12
X3.13
or at exter-
nal exten-
sion H1
Signal "External demand"
(external starting of com-
pressor and pumps, mixer
in control operation or
OPEN, changeover of op-
erating mode of several
system components)
Requires floating
N/O
contact:
■ Closed: Demand
■ Open: No demand
■ Breaking capacity 230 V~, 2 mA
Note
■ These or other external functions, such
as swimming pool heating, cascade or
external set value default can alterna-
tively be connected via external exten-
sion H1.
Installation instructions "Exter-
nal extension H1"
■ If a swimming pool heating facility is
connected to external extension H1,
no other external function can be con-
nected to external extension H1.
X3.17
X3.18
Fuse F1 6.3 A (slow)
Controller and sensor PCB
Set the required parameters during com-
missioning; see from page 112.
Installation sequence
Electrical connections
(cont.)
5609 667 GB
Installation
