TERMOSTROJ TERMO-Blok, Инструкция по эксплуатации, Страница: 31 / 116

TMS-UT-0114-T01-1
1.4.5. Limiting the minimum and maximum temperature of water in the boiler
If the heating curves and offset are selected correctly and room temperature is falling, in transitional
period in heating seasons ( fall, spring) minimal temperature of water in the boiler has to be changed.
If a building cannot accumulate heat (sudden and short warming during the day) necessary
temperature of water in the boiler will be too low and will not keep up the desired room temperature.
Limitation of the maximum temperature of water in the boiler serves more as a protection. Factory
setting is at 90
o
C, and we suggest lowering it at approximately 80
o
C. Limitation of the maximum
temperature of water in the boiler is also used in central heating and domestic water preparation
system, and because of that it is not advisable to lower that temperature too much because the
domestic water will warm up slowly on higher temperatures.
1.5. Functionality of hot domestic water
1.5.1. Availability
It is possible to prepare hot water in separate water storage with heat exchanger by using the Termo
Extra boilers with options W, and Termo PTV boilers.
1.5.2. Description
Domestic water conditioning has a preference order over central heating. At the moment of signaling
the need for warming up the domestic water container by the domestic water temperature sensor, the
circulation pump of central heating is switched off and the circulation pump for domestic water
conditioning is switched on.
Heaters regulate the desired water temperature in the boiler that is by 25°C higher than set values of a
desired domestic water temperature (independent of the central heating curve).
Circulation pump for domestic water conditioning supplies container until the desired temperature of
domestic water is reached, upon which it is switched off with the previously described and
programmed time delay.
If the central heating is off, either floor or radiators heating, at the moment of reaching the desired
domestic water temperature, the desired water temperature in a boiler is set to the minimum value of
water temperature in the boiler (stand by).
At repeated request for heating the domestic water container the desired water temperature in the
boiler is set to 25°C higher than set values of the desired domestic water temperature.
Circulation pump for domestic water conditioning is switched on as late as the water temperature in
the boiler reaches the same or higher temperature than the desired value of domestic water
temperature.
The 5°C difference for warm water conditioning is programmed. It means that if the desired
temperature of domestic water tank is 60°C, then central heating will be switched off and domestic
water conditioning switched on as late as domestic water temperature is lower than 55°C, and heating
will be switched on and domestic water conditioning switched off when the temperature in domestic
water tank reaches 60°C and when the programmed time of supplemental operation of domestic water
circulation pump has passed.
If the time for domestic water conditioning is longer than 30 min., especially if the desired temperature
of domestic water tank is not reached within 30 min., the process will be automatically interrupted and
it switches to the heating regime, which in this case lasts for at least 30 min.
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