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Просмотр инструкции эл. водонагревателя Gorenje GBU200B6, страница 17
17
CONNECTION TO THE WATER SUPPLY
Inlet and outlet of water are on the water heater pipes marked with colour. The supply of cold
water is marked with blue, the outlet of warm water is marked with red. The water heater can
be connected to the water supply in two manners. Closed pressure system of connection
enables the outlet of water on several outlet spots, non-pressure system enables only one
outlet point. With regard to the system of connection chosen, also the suitable mixing taps
must be purchased. By open non-pressure system it must before the water heater a non-
return valve be built-in preventing the running of water of the tank if in the network the water
runs short. By this system of connection, the cross-flow mixing tap must be used. In the water
heater, due to the heating the volume of water is increasing, which causes the dropping of
water of the mixing tap pipe. By strong squeezing of knob of the mixing tap the dropping of
water can not be prevented, but the mixing tap can only be damaged.
By closed pressure system of connection on the outlet spots the pressure mixing tap must
be used. 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.
GB
Dimensions of the water heater for installation and connection [mm]
GB 50 GB 80 GB 100 GB 120 GB 150 GB 200
A 583 803 948 1103 1318 1510
B 365 565 715 865 1065 1050
C 185 205 200 205 220 430
D 145 345 495 645 845 800
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