Panasonic WH-MDF09C3E5 Installation Manual page 44

Installation of heating and refrigeration circuits for split systems
Connecting the water pipes to the hydro module
Warning!
Warning!
Note
The hydro modules feature an
expansion tank as standard
(approx . 10 litres of air capacity,
initial pressure of 1 bar) . The
water quantity in the system
should be less than 200 litres
(without a hot-water tank),
otherwise an expansion tank
must be included . There are
roughly 5 litres in the hydro
module . The height difference in
the water circuit should not ex-
ceed 7 metres . See the design
handbook for split systems and
monobloc systems for other
connection variants .
7 – 44 Aquarea air/water heat pump – Installation manual for monobloc and split systems C, D and E series 05 / 2014
There must be at least 50 litres (for 12 to 16 kW devices) or 30 litres
(for 3 .0 to 9 .0 kW single fan deck) of liquid in the system .
If these values are not reached, an additional storage tank must be
installed .
To prevent damage to the heat pump from lime scale, please consult
BS 7593 "Code of practice for treatment of water in domestic hot water
central heating systems" .
Fill the system as follows:
➤
Open all thermostatic radiator valves of the heating system, and all
➤
other shutoff valves where applicable .
Connect a filling hose (evacuated if possible) to the system .
➤
Keep adding water or antifreeze mix until the manometer reaches
➤
the nominal pressure .
Vent the system (see the Commissioning section (9)) . Then check the
➤
pressure again and add liquid if necessary
1
1 Manometer