Removing The; Installation, Heating And Domestic Water - Panasonic PAW-TD20B8E3-1 Technical Data Manual

PAW-TD20B8E3-1
Removing the front cover
1. Unscrew and remove the two screws in the lower part of the front panel.
Pull out the lower part of the front approx. 100-150mm.
2.
3. Grip the sides of the front panel and lift it straight up.
4. Remove the frontpanel carefully to not damage the contact or the cable connection between the display and
the control unit inside the frontpanel

Installation, Heating and Domestic water

For maximum comfort, use connectors that reduce transfer of vibration, and at the same time suites the water temperature and pressure. In order
to avoid "taps" in the heating system, the pipes must be located in such way that temperature differences may be tolerated.
PROCEDURE
1. Put the hydro unit in position. Adjust it in level by using the screw feet. The tank must be levelled using a spirit level. This must
be done before the tank is connected to the pipes and before the tank is filled with water.
2. Flush/clean the existing heating system carefully to avoid the particle filter
3. Connect the supply and return pipes to the existing heating system. The various pipes are marked on the top of the tank.
4. Connect the domestic water supply. A mixing valve is recommended to avoid scalding. A 7 bar safety valve (pressure valve)
must be connected at installation. The pressure valve must be installed in a frost-free environment. (Not included).
5. Connect an escape pipe between the radiator safety valve and the floor drain, and also between the safety valve of the
domestic hot water tank and the floor drain.
6. Verify if the vessel is dimensioned for the heating system (approximately 10% of the total volume)
7. Check the repressure of the expansion vessel. The pressure depends on how high the water has to be lifted.
8. Put the 3way valve manually in ”fill mode” (both flow way open) and open the manual/automatic air vent.
9. Fill the radiator system and close the manual air vent.
10. Keep the pressure within recommended pressure range to prevent the water escaping through the safety valve.
Restore the 3way valve in automatic position.
11. Bleed the radiators. Check the system pressure. Fill more water to the system if needed. Repeat until all air is bled.
12. Check if the diverting valve switches to radiator operation and that the radiators heat up. Bleed the system once
it is warm. Check for leaks in the system.
13. Clean particle filter (see Maintenance)
14. Fill the domestic hot water tank. Open a hot water tap to ventilate.
15. Close the automatic air vent after approx. two weeks to prevent air from entering the system.
Mixing
valve with
safety valve
Height difference x 0.1 + 0.3 =
Pressure in the expansion vessel.
1m
2.3m
2.2m
E.g. If the tank is in the basement and
the radiators in the loft, the difference
in height between the expansion vessel
and radiators will be approx. 5.5 m
(5.5)0.1+0.3= 0.85 bar
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