Daikin EKHWP500A [20/24] X operation and maintenance

5 x Operation and Maintenance

Installation instructions

EKHWP300/500A

Hot water storage tank for air-water heat pumps and solar panels

4PW55928-1

5 Operation and Maintenance

5.1 Operation

No separate controller is required to operate the hot water storage tank. Control is effected by means of the connected

EKHBRD* air-water heat pump and, when a solar system is connected, also via the EKSRPS3 control and pump unit.

• Check the level in the storage tank at regular intervals and top up with water if required.

5.2 Service and maintenance

The EKHWP300/500A hot water storage tank is practically maintenance free by virtue of its design. No corrosion protection

equipment is required (such as sacrificial anodes). This means that associated maintenance work, e.g. changing the protective

anodes or cleaning the inside of the storage tank, does not need to be carried out.

Regular inspection of the hot water storage tank guarantees a long working life and fault-free operation.

Tests performed during the annual service:

– Visual inspection of the general condition of the hot water storage tank.

– Visual inspection of connections and pipes. In the event of damage, determine the cause.

Î Replace defective parts.

– Check all electrical components, connections, and cables.

Î Repair damaged parts or replace them.

– Check the water pressure of the cold water supply (<6bar).

Î If necessary check the fitting or adjustment of the pressure reducer.

– Visual check of the water storage tank level (water level at the overflow point).

Î If necessary, top up the supply water to the overflow point.

– Check the connection of the safety overflow and drain hose for leaks, free drainage and gradient.

Î If necessary clean the safety overflow and drain hose and and re-route, replace damaged parts.

Clean the storage tank (annually)

• The low-maintenance plastic must only be cleaned with a soft cloth and a mild detergent.

• Do not use cleaning agents containing aggressive solvents, as this will damage the plastic surface.

WARNING!

Live parts can cause an electric shock on contact and cause fatal burns or injuries.

• If the EKSRPS3 control and pump station is installed on the hot water storage tank, then this component

must be disconnected from the power supply before starting the inspection and maintenance work

(e.g. fuse, main switch switched off and secured against inadvertent switching on again).

WARNING!

All work performed on live components must be carried out in accordance with the proper procedures,

otherwise there may be a danger to the life and health of individuals and the function may be impaired.

• Rectification of damage to live components may only be carried out by heating engineers authorised and

recognised by the energy supply company.