Connection To The Water Supply - Gorenje Tiki OTG 30 SLIM Manual Del Usuario

A
OTG 30 510
OTG 50 690
OTG 65 820
OTG 80 950
OTG 100 1125
OTG 120 1300
Dimensions of the water heater for installation and connection [mm]

CONNECTION TO THE WATER SUPPLY

The water heater connections for the in-flowing and out-flowing water are colour-coded.
The connection for the supply of cold water is coloured blue, while the hot water outlet is
coloured red.
The water heater may be connected to the water supply in two ways. The closed-circuit
pressure system enables several points of use, while the open-circuit gravity system
enables a single point of use only. The mixer taps must also be purchased in accordance
with the selected installation mode.
The open-circuit gravity system requires the installation of a non-return valve in order to
prevent the water from draining out of the tank in the event of the water supply running
dry or being shut down. This installation mode requires the use of an instantaneous mixer
tap. As the heating of water expands its volume, this causes the tap to drip. The dripping
cannot be stopped by tightening it further; on the contrary, the tightening can only damage
the tap.
The closed-circuit pressure system requires the use of pressure mixer taps. For safety
reasons the supply pipe must be fitted with a return safety valve or alternatively, a valve of
the safety class that prevents the pressure in the tank from exceeding the nominal
pressure by more than 0.1 MPa.
The heating of water in the heater causes the pressure in the tank to increase to the level
set by the safety valve. As the water cannot return to the water supply system, this can
result in the dripping from the outlet of the safety valve. The drip can be piped to the drain
by installing a catching unit just below the safety valve. The drain installed below the safety
valve outlet must be piped down vertically and located in the environment that is free from
the onset of freezing conditions.
In case the existing plumbing does not enable you to pipe the dripping water from the
return safety valve into the drain, you can avoid the dripping by installing a 3-litre expansion
tank on the inlet water pipe of the boiler.
You should ensure that the return safety valve is functioning properly by checking it on
a regular basis i.e. every 14 days. To check the valve, you should open the outlet of the
return safety valve by turning the handle or unscrewing the nut of the valve (depending on
the type of the valve). The valve is operating properly if the water comes out of the nozzle
when the outlet is open.
B C
310 235
470 250
605 245
735 245
900 255
900 430
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