Drazice PTO 1733 Manuel d'utilisation et d'installation - Page 6

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1.3 OPERATION INSTRUCTIONS

A special low-pressure combination faucet has to be used with this product.
Opening the hot water valve (red) on the combination faucet activates automatically heating of the flowing
water. Turning the heating on is signalled with a red light on the front cover of the heater. Output
temperature is controlled directly by the hot water valve on the combination faucet through water flow
change. Its temperature drops as the flow grows. Closing the hot water valve on the combination faucet
automatically deactivates heating, the signal light goes off and electricity consumption discontinues.

1.4 SAFETY FEATURES OF THE PRODUCT

This flow heater ensures high operation reliability. The safety is guaranteed by three protection levels.
On the first and every following connection of the heater to el. network the time safety delay of closing
the el. circuit is set (approx. 5 seconds). This safety feature protects the heater from overheating if thorough
bleeding of the heater is not achieved by connecting it to the water supply piping.
The flow heater is further equipped with the following safety features:

1.4.1 PRESSURE SWITCH

Shall not close el. circuit if water flow is insufficient.

1.4.2 SAFETY ELECTRONICS

Automatically discontinues water heating for a period necessary if the appliance overheats. Interrupted run
of the heater indicates either failure in following the operation conditions advised by the manufacturer,
or a failure of the heater. The cause of faulty function has to be removed immediately, since there is a risk
of damaging the appliance.

1.4.3 PRESSURE FUSE

Protects from excessive inner water pressure. If this fuse is inactive, water starts flowing out on the rear side
of the heater. If this situation occurs, immediately close both valves of the combination faucet and disconnect
power supply.
Make sure the sieve in the cold water supply to the heater, as well as the pearlator
and shower element are cleaned regularly. If the above components get clogged, water flow
reduces and the appliance will be put out of service until the causes are removed.
All the safety features have to be repaired only by an authorised service shop worker!
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