Filling And Venting Heating System - Orca WSW COMPOSITE Installation And User Manual

To connect the water tank on the water system, consider manuals supplied by water tank manufacturer
On the back side of the unit there is a pipe connection for condensate drain. This connection must be
connected to outlet drainage, because in high water usage and air moisture there can be more than a few
liters of water in one day. This pipe needs to have constant incline at least 1°and must be always clean.
When connecting the heat pump to the system, it is not recommended to use galvanized transition pieces
or copper pipes in order to prevent corrosion by a galvanic couple. It is advisable to use short flexible tubes
to connect the heat pump to the system. Detailed information about possible faults, their removal and
protection are described in standards SIST EN 12502-1 and SIST EN 806-4.
Condensate pipe needs to be checked and cleaned once per month.
The supply socket needs to be at least 1,5m above ground level, to avoid direct spraying of water causing
injuries and damage. The socket needs to be earthed, secured with 16A fuse and FI relay (max. current
0,03A). The cable to the socket must be at least 3x2,5 mm
the socket and no other consumers.

8.1 Filling and venting heating system

safety valve. When max. pressure is reached, close the tap and fill valve, remove the connection pipe and put
on the fill valve safety cover.
If the system is not filled properly or there are air bubbles in the system, the unit will not work with the best
efficiency, it will overheat and in worst case it can be damaged.
When the unit is in constant operation you need to check the pressure in the system at least once per year.
For normal unit operation, the pressure must always higher than 0,05MPA (0,5bar).
2
, and only the heat pump can be connected to
Under the cover of the unit you can find the fill and safety
valve.
On the fill valve (connection 3/4") you must connect a water
pipe from water supply system, then open the tap and fill valve.
When you open the tap and fill valve, it is important that you
gently turn the red handle on the safety valve a few times, to
remove air from the system. To remove all of the air from the
system, we recommend turning the unit on and off for a few
minutes during filling process 3 times, to start the circulation
pump. During operation, open the safety valve a few times.
When all air is removed from the system, fill water up to the
maximum pressure 0,3MPa (3bar), which is limited with the
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