Ariston NIMBUS COMPACT S NET Manual page 83

THERMOREGULATION
To set the temperature adjustment parameters, simultane-
ously press and hold the back "
"Enter code" appears on display. Turn the knob to enter
the technical code (234), then press OK; the display will
show Technical area.
Turn the knob and select
- Complete Menu.
Press the OK button. Turn the knob and select:
4 ZONE 1 PARAMETERS
4.1 SUMMER/WINTER CHANGEOVER
4.1.0 S/W function activation Z1
turn the knowb and select to activate summer/winter chan-
geover:
- OFF
- ON
4.1.1 S/W temperature threshold
turn the knowb and select the threshold temperature of
the summer/winter function.
4.1.2 S/W delay time
turn the knowb and select the time delay for S/W activa-
tions.
Press the OK button. Turn the knob and select:
4.2 ZONE 1 SETTINGS
4.2.0 Zone 1 Temperature range
Press the OK button. Turn the knob and select the tem-
perature range:
0 low temperature
1 high temperature
4.2.1 Thermoregulation
Turn the knob and select the installed temperature adjust-
ment:
- 0 Fix Flow T (defined by parameter 4.0.2)
- 1 Basic Thermoreg
flow setpoint temperature is incremented by step of 4°C
(max 12°C), delay time of temperature variation defined
by parameter 17.2.4
- 2 Room T Only
- 3 Outdoor T Only
- 4 Room+Outdoor T
Press the OK button. Turn the knob and select:
4.2.2 Slope
Press the OK button. Turn the knob and set the curve in
accordance with the type of heating system and press the
OK button.
- low temperature system
(floor panels)
curve between 0.2 and 0.8
- high temperature system
(radiators)
curve between 1.0 and 3.5
3.5
°C 100
90
80
70
60
50
40
30
10 5 0
" and "OK" buttons until
3.0 2.5 2.0
1.5
1.2
1.0
0.8
0.6
0.4
0.2
-5 -10 -15 -20 °C
outdoor temperature
Curves graph
The checking process for the suitability of the curve re-
quires a long period of time during which several adjust-
ments may be necessary. When the outdoor temperature
falls (winter), three conditions may arise:
1. The temperature of the room may fall, indicating that a
steeper curve should be set;
2. The temperature of the room may rise, indicating that a
gentler curve should be set;
3. The temperature of the room remains constant, indicat-
ing that the set curve is exactly right;
Once you have found the curve which maintains the room
temperature at a constant level, check the actual tempera-
ture value.
4.2.3 Offset
Turn the knob and set the most suitable value. Press the
OK button to confirm.
NOTE:
If the room temperature is higher than the desired value
the curve must be shifted downwards. If, on the other
hand, the room temperature is too low, the curve should
be shifted upwards. If the temperature of the room cor-
responds to the desired value, the curve is in the right po-
sition. In the graph below, the curves have been divided
into two groups:
- low temperature systems
- high temperature systems
The two groups are divided on the basis of the different
point of origin of the curves for high-temperature sys-
tems, which is +10°C, a correction which is usually made
to the flow temperature in this type of system, during cli-
matic adjustment.
4.2.4 Room Influence Proportional
Press the OK button.
Turn the knob and set the most suitable value, then press
the OK button. The influence of the room sensor can be
adjusted to a value between 20 (maximum influence) and
0 (no influence). This means the contribution of the room
temperature to the flow temperature calculation can be
adjusted.
4.2.5 Maximum temperature
Press the OK button.
Turn the knob and set the most suitable value, then press
the OK button.
4.2.6 Minimum temperature
Press the OK button. Turn the knob and set the most suit-
able value, then press the OK button.
4.2.9 Heat request mode
Turn the knob and select:
- Standard
. RT Time Programs Exclusion
(In this mode the heat requests generated by the TA re-
main active even during the night in programmed mode)
- Forcing Heat Demand
(Activation of the function generates an heat demand
"always on" )
Repeat the steps described to set the values for zone 2 (if
present), selecting menu 5.
NOTE:
For the correct operation of the types of thermoregu-
lation: 2. Room T Only, 3. Outdoor T Only, 4. Room +
Outdoor T, the parameter 17.1.1 must be set to value 1, or
the function SCI must be enabled.
83 / GB