34
Clamps
Function
Explanation
X3.2
X3.14
■
In systems
without
heating water
buffer cylinder: Temperature limiter
to restrict the maximum tempera-
ture of underfloor heating circuit (if
installed)
or
■
High limit safety cut-out in conjunc-
tion with external heat generator
or
■
"External blocking" signal: External
blocking of compressor and pumps,
mixer in control mode or CLOSED:
Can also be connected at EA1 ex-
tension.
Note
In systems with heating water buffer
cylinder, the temperature limiter is
connected in series to the relevant
heating circuit pump: See chapter
"Temperature limiter to restrict the
maximum temperature of underfloor
heating circuit".
Floating contact (N/O contact) required:
■
Closed: Blocking active
■
Open: No blocking
■
Breaking capacity 230 V~, 2 mA
Note
■
The system may no longer be protected against frost
■
These and further external functions (e.g. provision of
external set values) can alternatively be connected
via the external EA1 extension.
See "EA1 extension" installation instructions
X3.3
X3.4
Flow switch, well circuit
Requires floating contact:
■
Closed: Heat pump operational
■
Open: Heat pump shut down
■
Breaking capacity 230 V, 0.15 A
Note
No jumper should be installed if a flow switch is con-
nected.
X3.6
X3.7
G
Power-OFF
Requires floating contact:
■
Closed: Heat pump operational
■
Open: Heat pump shut down
■
Breaking capacity 230 V, 0.15 A
Installation sequence
Electrical connection
(cont.)
6153640
Installation
