Shower with thermostat - Function

Shower with thermostat - Function


A thermostat prevents changing temperatures in the shower. To understand how, its operation must be scrutinized.

Pressure swings are responsible for interchangeable showers

Instead of pleasantly warm water, ice cold suddenly pours out in the shower? Such fluctuations in temperature during showering are caused by pressure fluctuations in the water pipes.

Reason for such differences in pressure: A sanitary system usually hangs on a water pipe. If the shower and toilet are running on the same line, pressure changes will occur during the operation of the toilet flush in the shower. These pressure changes cause the showerer to change the temperature. A thermostat in the shower can remedy this situation.

Thermostat in the shower provides a remedy

The thermostatic valve is designed to compensate for pressure differences and maintain a previously set temperature with constancy. In general, a mixed shower mixer is the basis for the operation of the thermostatic valve. This means that a regulator surrounded by hot and cold mixed water is contained inside the valve.

This controller responds to temperature changes with a proportional change in length. When the inflow conditions to the thermostat change in water or water temperature, the thermostatic valve closes or opens a slot for hot or cold water. The temperature of the output water is constant even if the incoming water fluctuates.

Mostly a water button with flow limitation to 50 percent and a temperature lock at 38 degrees Celsius complete the functionality. Unlike valves without a thermostat, the water does not have to be preheated. It can be taken directly from the set temperature, which provides energy-related advantages.

But beware of low-quality thermostatic valves that do not correct pressure fluctuations satisfactorily. Ceramic valves can be an indication of quality, as they have a high temperature resistance.

Using functionality with skillful adjustment

With a qualitative thermostat, changing temperatures in the shower will be a thing of the past. However, this only applies if the user adjusts the correct temperatures professionally and skillfully adjusts them. Showering with thermostatic valves can take some getting used to, because the valve reacts more accurately and immediately to temperature settings than other valves. Therefore, adjust only carefully.

In general, the temperatures can be set between 20 and 50 degrees Celsius via the control unit. To exceed 39 degrees, press the safety button to protect against scalding. The recommended temperatures for shower and bath water are at maximum body temperature, ie between 32 and 39 degrees Celsius.

In principle, the supplied hot water temperature must be well above the desired discharge temperature. As a mixer, the thermostatic mixer always mixes cold and hot water, so it never falls back to just one of both. Therefore, the cold water inflow must be significantly colder than the maximum desired temperature of the cold water delivery. The same applies to hot water flow.

Tip: If the desired temperature is found, it can be kept for all future shower cycles. To do this, at the set temperature remove the cap on the thermo control knob. Then loosen the screw, put on the knob and tighten the screw. Finally, the cap returns to its destination and the desired temperature is provided.

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Video: Concealed shower valve - Thermostatic cartridge (brass: maintenance, replacement and calibration|

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