14
Fig.
№
. 8
Hydraulic diagram without HW preparation – pump heating circuit
Key of piping, signs and symbols in the diagrams::
Sensor cables can be shortened or prolonged provided following principles are observed:
-
do not cut the sensor cable in the distance shorter than 0,5 m from the jacket;
-
cable sensor prolongation by more than 10 m is not recommended;
-
CMSM – H 2 x 0,5 mm cable is recommended for the cable prolongation;
-
cable connection in case of prolongation has to be done very carefully. Ensure the conductive joint when
shortening or prolonging the cable.
If the reversible (and intake) pipe is led
from the boiler upward, it may cause
unwanted circulation of water in one
pipe. Warmer water rises up through the
centre and then cooled descends
around the pipe. It happens for the
pipes with DN 25 and larger.
In case this phenomenon occurs -
usually at HW heating outside the
heating season, the situation can be
avoided by inserting a vertical section of
pipe in which the opposite flow should
occur.
See Fig.
