7
• The fixing of the safety return valve to cables greater than 10 mm in thickness is forbidden, as it could damage the valve
and render the water heater dangerous.
• The safety return valve and the pipe between the valve and the water heater must be protected against freezing.
During draining with the hose, the free end must always be open (not submerged). The hose should also be protected
against freezing.
The water heater tank is filled with water when you open the key in the cold water supply system and the hot
water faucet. After thr filling process, a constant flow of water must flow through the hot water tap. Once this
happens, the hot water tap can be closed.
When you want to empty the water heater tank, you must first cut off the power supply.
Drainage procedure for above sink installation of the water heater:
1. Disconnect the water heater from the electric current.
2. Close the cold water supply tap
3. Open the hot water supply tap.
4. The water tap must be opened to drain the water from the water tank. If there is no such outlet pipe, the
water can be drained as follows:
• Discharge the water from the water heater by raising the recoil lever of the safety valve.
• The water can be drained directly from the inlet pipe of the water tank that has been disconnected.
IMPORTANT:
When emptying the water heater, take measures to avoid damage caused by water flow
Drainage procedure for below sink installation of the water heater:
1. Disconnect the water heater from the electric current.
2. Close the cold water supply tap.
3. Remove the water connection accessories from the water heater.
4. Remove the thermos from point of installation. Rotate it so that the outlets are oriented downwards and
pour the water into a container. Wait until all the water drains from the water heater.
If the pressure in the water network exceeds the amounts indicated in section 1, it is necessary to install a
pressure reduction valve, otherwise the water heater will not work properly. Rointe does not assume any
responsibility for problems arising from incorrect use of the water heater.
4.3. Electrical fittings
The electrical fittings must be fitted to the product. If not, the guarantee will be null and void.
4.4. Pressure reducing valve
The pressure reducing valve should be installed in the cold water supply to the water heating unit
with the arrow pointing in the direction of water flow as shown in Figure 2 . This can be connected to a
maximum supply pressure of 0.9 MPa.
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