Technical data

20
Figure 6 CH Knob
Figure 7 Manometer
2.5.2. Central Heating Control Knob
This feature allows user to set the desired temperature for the central
heating system water. When central heating knob indicates the region
under the legend ‘1’, central heating mode is ‘OFF’. When it passes
over the position of legend ‘1’, central heating turns to mode ‘ON’. (Note
that domestic hot water knob should not be in ‘OFF’ position to ‘ON’ the
central heating mode.) From number 1 to 7 central heating water tem-
2.5.3. Pressure Gauge (Manometer)
The pressure gauge on the control
fascia panel indicates the central
heating system pressure. The nor-
mal running pressure is around 1
bar (cold) indicated by the solid
green line.
perature can be adjusted. Turning
clockwise increases the set tem-
perature.
When the indicator knob position
passes over the legend ‘1’, domes-
tic hot water mode is ON. From
number 1 to 7 domestic hot wa-
ter temperature can be adjusted.
Turning clockwise increases the
set temperature.
1) Lowerredregion:Indicatesthatwaterpressureisnotsufcient.Boil-
er doesn’t workinthat region. It should bepressurized(lled) via
water supply into the system.
2) Lower green region: When the boiler isn’t working, water pressure
should be in that region.
3) Upper green region: Indicates the maximum pressure level while the
boiler is working.
4) Upper red region: Indicates that water pressure is over the required
level. Water should be removed from the system until the manometer
shows the lower green region. If the manometer shows the upper
solid red line, 3-bar safety valve removes the water from the system
automatically.