Electrical Connection - Dimplex LA 6S-TUR Instructions D'installation Et D'utilisation

LA 6S-TUR
Minimum heating water flow
The minimum heating water flow rate through the heat pump
must be assured in all operating states of the heating system.
This can be accomplished, for example, by installing either a
dual differential pressureless manifold or an overflow valve. The
procedure for setting an overflow valve is described in the
chapter "Start-up". When the minimum heating water flow rate
is undershot, the plate heat exchanger in the refrigeration cir-
cuit can freeze, which can lead to total loss of the heat pump.
The nominal flow rate is specified depending on the max. flow
temperature in the device information and must be taken into
account during planning. With design temperatures below 30 C
in the flow, the design must be based on the max. volume flow
with 5 K spread for A7/W35.
The specified nominal flow rate (see cap. 11) must be assured
in all operating states. The installed flow rate sensor is used only
for switching off the heat pump in the event of an unusual and
abrupt drop in the heating water flow rate and not to monitor
and safeguard the nominal flow rate.
NOTE
The use of an overflow valve is only recommended for panel
heating and a max. heating water flow of 1.3 m³/h. System
faults may result if this is not observed.
Antifreeze
Heat pump systems, which cannot be guaranteed to be frost-
free, should be equipped with a drainage option (see Fig.). The
antifreeze function of the heat pump manager is active when-
ever the heat pump manager and the heat circulating pump are
ready for operation. When decommissioning the heat pump, or
in the event of a power failure, the system must be drained
through the indicated points (see illustration); it may be neces-
sary to purge the system with compressed air. The heating cir-
cuit should be operated with a suitable antifreeze if heat pump
systems are implemented in buildings where a power failure
can not be detected (holiday home).
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6.3 Electrical connection

A standard five-core cable is used for connecting the heat
pump to the power supply.
The cable must be provided by the customer. The conductor
cross section is selected in accordance with the power con-
sumption of the heat pump (see appendix Device information)
and the applicable VDE (EN) and VNB regulations.
An all-pole disconnecting device with a contact gap of at least
3 mm (e.g. utility blocking contactor or power contactor) as well
as a 3-pole circuit breaker with common tripping for all external
conductors must be installed in the power supply (tripping cur-
rent in compliance with the device information).
The relevant components in the heat pump contain an internal
overload protection.
When connecting, ensure that the incoming supply has a clock-
wise rotating field.
Phase sequence: L1, L2, L3.
CAUTION!
Ensure the rotary field is clockwise when connecting the
mains cables (if the rotary field is not clockwise, the heat
pump will not work properly, is very loud and may cause
damage to the compressor).
 The control voltage is supplied via the heat pump manager.
A 3-pole line must be laid for this in accordance with the
electrical documentation. Further information on the wir-
ing of the heat pump manager is available in the heat pump
manager operating instructions.
 A shielded communication line (J-Y(ST)Y ..LG) (not in-
cluded in the scope of supply) connects the heat pump
manager with the WPIO controller installed in the heat
pump. More detailed instructions can be found in the heat
pump manager operating instructions and in the electrical
documentation.
CAUTION!
The communication cable is necessary for the function of air-
to-water heat pumps in outdoor installation. It must be
shielded and laid separately from the mains cable
6.3.1 Demand sensor connection
The demand sensor R2.2 is included with the heat pump man-
ager. It must be connected.
NOTE
The return sensor R2 installed in the heat pump is active when
the compressor is running and must not be disconnected.
452163.66.95 · FD 0107
English
EN-7