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- 11 -
The outdoor temperature sensor is to be mounted at the outside north wall of the
building, in a way it is not exposed to direct sunrise or other type of heating radiation, which
can influences to the correct measurement of the outdoor temperature. The assignation of the
heating water is being calculated by means of sensor “A” measurement.
The decreasing of the outdoor temperature bellow +20 C leads to increasing of the
assignation of the heating water, which reaches it maximum level at the lower border range
for the equi-thermal regulation (Tout.min).
The maximum assignation of the heating water is being defined by means of heating type
or room thermostat presence, for example:
a)
85 C with radiator heating, without a room thermostat;
b)
50 C with under floor heating without a room thermostat;
c)
50 C with under floor heating with a room thermostat;
In case of under-floor heating system it is recommended an installation of mechanical
emergency thermostat which is to stop circulation pump P2, in case the heating temperature
exceeds the maximum assigned one. The previous mentioned could happen if the outlet boiler
temperature reaches its emergency value and the Controller has been opened the mixed valve.
1.5.5.1. Selection of the lower border of the equi-thermal regulation range
The desired temperature range depends of the premises insulation and it is being selected by
submenu „OPTIONS” -> „Equi-thermal reg” (see point 1.4). The first number in the range
shows the minimum outdoor temperature which corresponds to the highest (hottest) heating
one.
There are opportunity for assignation of 6 temperature ranges concerning the outdoor
temperature sensor:
from +5 up to +20 С; from –10 up to +20 С;
from 0 up to +20 С; from –15 up to +20 С;
from –5 up to +20 С; from –20 up to +20 С.
as the heating water assignation is being changed in compliance to figure4.
without room thermostat
with room thermostat
The outdoor temperature range (-20
0
C) – (+20
0
C) has to be selected for buildings with small
heat losses where the heating water in the system reaches its maximum value if the outside
temperature is -20
0
C. The ranges of (+5
0
C) – (+20
0
C) and (0
0
C) – (+20
0
C) have to be chosen
for premises with big heat losses like production halls, stores, etc., where the hottest heating
water can be obtained as soon as the outdoor temperature reaches +5
0
C or 0
0
C. Concerning
the factory settings, take into consideration that jumper J2 is placed at position (-10
0
C) –
(+20
0
C).
