Hyundai Rainforest H-IWR1-3P-UI056/C [13/56] Cleaning

13.

Electrical instant water heater

Incoming water is heated inside the heating ask, when it ows through the heating element.

Water temperature in the water supply network may uctuate throughout the year from +3°C

to +20°C. Therefore, water ow in winter shall be made lower than in summer to obtain the

optimum water temperature. Water ow is controlled by the valve at the water inlet of the water

heater. Never install an isolation valve or shut o water ow at the water heater outlet. Aer

activation of heating, wait for 10-20 sec until temperature of heated water is stabilized.

For adjustment of hot water temperature, use the valve at the inlet connection (cold water inlet).

When you decrease inlet ow rate of water, you increase outlet temperature of water and vice

versa. For water heaters of H-IWR1-5P and H-IWR1-6P series, you can also place the On/O/

power control knob to the low power position ( ) or to the medium power position ( ) in or-

der to adjust water temperature. To switch o the water heater, place the On/O/power control

knob to the OFF position ( ), close the cold water feed valve at the inlet, and de-energize the

water heater.

CLEANING

Operation of the water heater may result in scaling of the shower/tap nozzle openings. This

reduces eciency of heating, deteriorates water spraying, and increases water pressure in the

heating ask.

For prevention of such phenomena, periodically clean the nozzle using household chemical

agents and so brushes. Do not use abrasive cleaning substances and inappropriate chemical

agents.

Prior to cleaning the outer surfaces, disconnect the water heater from the electrical mains and

allow it to fully cool down. Clean the outer surface of the appliance housing with a slightly moist-

ened so cloth and then wipe it dry. Do not use abrasive cleansers for cleaning.

If water ow rate from the water heater decreases, clean the coarse lter (rubber gasket and

strainer) installed at the cold water inlet of the water heater. For that, disconnect the appliance

from the electrical mains and allow it to fully cool down. Then, shut o cold water feeding,

unscrew the cold water supply pipe from the water heater, remove the rubber gasket with the

strainer, and ush it under a jet of owing water. Restore the inlet connection in the reverse

sequence.

1 - O position

2 - On/O and power control knob

3 - Low power position

4 - Medium power position

5 - Full power position

Before rst start or aer a long idle period of the water heater, ll it with water opening the cold

water feed isolation valve and make sure that cold water steadily ows from the water outlet at

the consumption point. Aer that, switch on the appliance and make sure that the power indica-

tor on the front panel lights up*.

To switch on heating, place the control knob to the ON position ( ). If sucient water ow and

pressure at least 0.08 MPa are available, the water heater will start heating water.