Filter
Top Products
www.dimplex.de E-5
English
7.4
7.2 Connection on Heating Side
ATTENTION!
The heating system must be flushed prior to connecting the heat pump.
Before completing the heat pump connections on the heating
water side, the heating installation must be flushed in order to re-
move any impurities that may be present, as well as residues of
sealing material, and the like. Any accumulation of deposits in
the condenser may result in a total failure of the heat pump.
ATTENTION!
The supplied strainer must be fitted in the heating water inlet of the heat
pump in order to protect the condenser against the ingress of impurities.
Once the installation on the heating side has been completed,
the heating system must be filled, de-aerated and pressure-
tested.
Heating water minimum flow rate
The heating water minimum 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 a differential
pressure-free manifold or an overflow valve. The procedure for
setting an overflow valve is described in the Chapter Commis-
sioning.
Frost protection for installations prone to frost
Provided the controller and heating circulating pumps are ready
for operation, the frost protection feature of the controller is ac-
tive. If the heat pump is taken out of service or in the event of a
power failure, the system has to be drained. In heat pump instal-
lations where a power failure cannot be readily detected (holiday
house), the heating circuit must contain a suitable antifreeze
product.
7.3 Connection on Heat Source
Side
The following procedure must be observed when making the
connection:
Connect the brine line to the flow and return pipe of the heat
pump.
The hydraulic plumbing diagram must be observed here.
ATTENTION!
The supplied strainer must be fitted in the heat source inlet of the heat
pump in order to protect the evaporator against the ingress of impurities.
In addition, a microbubble deaerator must be installed in the
heat source system.
The brine liquid must be produced prior to charging the system.
The brine concentration must be at least 25 %. Freeze protection
down to -14°C can thus be ensured.
Only antifreeze products on the basis of mono-ethylene glycol or
propylene glycol may be used.
The heat source system must be vented (de-aerated) and
checked for leaks.
ATTENTION!
The brine solution must contain at least 25 % of an antifreeze agent on a
mono-ethylene glycol or propylene glycol basis and must be mixed prior
to filling.
7.4 Electrical Connection
The following electrical connections must be established on the
heat pump:
Connection of the control wire to terminals X1: L/N/PE in the
control box of the heat pump.
Connection of the load wire to terminals X5: L1/L2/L3/PE in
the control box of the heat pump.
Connection of the brine pump (to be supplied by the cus-
tomer) to terminal PE and pump contactor K5: 2/4/6 on the
control panel of the HP.
All electrical components required for the operation of the heat
pump are located in the control box.
For more detailed instructions concerning the connection and
functioning of the heat pump controller (e.g. the supplied external
wall sensor) please refer to the enclosed operating manual of the
controller.
An automatic circuit-breaker with simultaneous tripping of all ex-
ternal conductors is to be provided in the load power supply. The
circuit-breaker must be an all-pole disconnect device with a con-
tact gap of at least 3 mm. The same applies to any additional dis-
able contactors that may be required, e.g. during shut-off periods
imposed by the utility company. The required cross-sectional
area of the conductors is to be selected according to the power
consumption of the heat pump, the technical connection require-
ments of the relevant utility company and all applicable regula-
tions. Power consumption data of the heat pump is provided in
the product literature and on the nameplate. The terminals are
designed for a max. conductor cross-section of 35 mm².
ATTENTION!
The clockwise phase sequence must be observed when connecting the
load lines (the heat pump will deliver no output and will be very noisy
when the phase sequence is incorrect).
The power cable must be run through the guide tubes, inserted
into the side of the control box and secured by means of the
strain relief.