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2.2
CONNECTING THE RESERVOIR TO HOT WATER DISTRIBUTION
Figure 4
Heater with volume exceeding 200 liters at the outlet hot water piping provide combined temperature
and pressure safety fittings according to ČSN EN 1490, or the temperature safety fittings fitted with water
temperature sensor placed in the heater or other safety valves DN 20, and the opening overpressure
compliant with the maximum operating overpressure of the heater vessel. The safety valve does not replace
the safety valve on the cold water inlet. No closing, return armature, and filter may be mounted between
the heater and the safety valve.
T fixtures with discharge valve for potential drain of water from the tank have to be mounted
on the cold water inlet of the tank.
Every independently closing heater must include a shutoff, test cock, or a plug for the inspection
of the backflow fitting, backflow fitting, and safety valve on the cold water supply. Heater above
200l litres is fitted with pressure gauge. It must be provided with a test valve, back valve, safety
valve and manometer on the hot water inlet.
