Filling The System With Water; Filling The Hot Water Heat Exchanger; Filling The Storage Tank; Electrical Connection - Daikin EKHHP300AA2V3 Installation And Operating Instructions Manual

4 x Set-up and installation

4.7 Filling the system with water

WARNING!
If you operate the DAIKIN EKHHP when the
storage tank is not completely full, damage to
the equipment may occur.
● Fill the DAIKIN EKHHP only after all the
hydraulic installation work has been
completed.
● Observe the sequence during the filling
process.
● Commissioning only after all the installation
work has been completed and only after
filling the storage tank completely.
The corrugated pipe heat exchangers must be filled
before the storage tank.
The heat exchanger for connecting an optional heat
generator (Fig. 3-1, Item 14, only EKHHP500AA2V3) also
needs to be filled if no optional heat generator is connected to it.
This heat exchanger, and the heating circuit of the external heat
generator connected to it, should be filled first.
CAUTION!
UK only!
If filling or topping up the storage tank is done by
means of the boiler filling and drain valve, a
temporary filling loop must be used with the
appropriate backflow prevention device in
accordance with clause G24.2, Guidance to the
Water Supply (Water Fittings) Regulations
1999.
Observe the information on the water connection and water
quality in accordance with Chap. 2.4.5 and 4.4.

4.7.1 Filling the hot water heat exchanger

1. Open the shutoff valve for the cold water supply pipe.
2. Open the hot water tap connections so that the draw-off
volume can be set as high as possible.
3. Once water has been discharged from the tap connections,
do not interrupt the cold water flow; this will ensure that the
heat exchanger will be fully vented and that any impurities or
residue will be discharged.

4.7.2 Filling the storage tank

See Section 9.2.
Installation and operating instructions
14

4.8 Electrical connection

WARNING!
Touching live parts can result in an electric
shock and lead to potentially fatal injuries and
burns.
● Before beginning work on live parts,
disconnect all of the systems circuits from
the power supply (switch off main switch,
disconnect fuse) and secure against uninten-
tional restart.
● The electrical connection and working on the
electrical components should only be
performed by qualified electrical engineers
in compliance with valid standards and
guidelines as well as the specifications of the
energy supply company and the instructions
given in this manual.
● Never carry out any structural changes to
plug sockets or other electrical equipment
components.
● The equipment covers and maintenance
opening covers must be re-fitted immedi-
ately after completion of the work.
CAUTION!
In the controller housing of the DAIKIN
EKHHP, in continuous running, elevated tem-
peratures can be generated. This can result in
currently-carrying wires from reaching higher
temperatures during operation due to self-
heating. For this reason, these lines need to
have a continuous use temperature of 90 °C.
● For the following connections, use only
cables with a long-term use temperature
≥90 °C:
– Exterior heat pump unit
– Voltage supplyBooster-Heater
– Contacts (connection HT/NT/Smart Grid)
– Network connections need to be executed as independent
power circuits.
– Ensure power cables, sensor cables and data bus cables are
laid separately from each other.
– Use only cable trunking with separate trays or cable trunking
with separators that ensure at least 2 cm spacing.
– Cable cross-overs are not permissible.
– For all the cables connected to the DAIKIN EKHHP effective
tension relief must be ensured in the controller housing using
cable ties (see Figures 4-8 to 4-10).
DAIKIN EKHHP(3/5)00AA2V3
DAIKIN Hot water heat pump
008.1423444_05 – 08/2016