Hyundai H-IWR1-5P-UI061/CS - Инструкция по эксплуатации - Страница 14

13.

Electrical instant water heater

EN

Incoming water is heated inside the heating flask, when it flows through the heating element. 
Water temperature in the water supply network may fluctuate throughout the year from +3°C 
to +20°C. Therefore, water flow in winter shall be made lower than in summer to obtain the 
optimum water temperature. Water flow is controlled by the valve at the water inlet of the water 
heater. Never install an isolation valve or shut off water flow at the water heater outlet. After 

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 flow 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/Off/

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

der to adjust water temperature. To switch off the water heater, place the On/Off/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 efficiency of heating, deteriorates water spraying, and increases water pressure in the 
heating flask.

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

agents and soft 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 soft cloth and then wipe it dry. Do not use abrasive cleansers for cleaning.

If water flow rate from the water heater decreases, clean the coarse filter (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 off cold water feeding, 

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

strainer, and flush it under a jet of flowing water. Restore the inlet connection in the reverse 

sequence.

1 - Off position
2 - On/Off and power control knob

3 - Low power position
4 - Medium power position
5 - Full power position

Before first start or after a long idle period of the water heater, fill it with water opening the cold 
water feed isolation valve and make sure that cold water steadily flows from the water outlet at 
the consumption point. After that, switch on the appliance and make sure that the power indica

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tor on the front panel lights up*.

To switch on heating, place the control knob to the ON position (      ). If sufficient water flow and 

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