Ariston NIMBUS HYBRID MODULE UNIVERSAL NET Manual page 78

THERMOREGULATION
To set the temperature adjustment parameters, simultaneously
press and hold the back "
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 changeo-
ver:
- OFF
- ON
4.1.1 S/W temperature threshold
turn the knowb and select the threshold temperature of the sum-
mer/winter function.
4.1.2 S/W delay time
turn the knowb and select the time delay for S/W activations.
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 temperature
range:
0 low temperature
1 high temperature
4.2.1 Thermoregulation
Turn the knob and select the installed temperature adjustment:
- 0 Fix Flow T (defi ned by parameter 4.0.2)
- 1 Basic Thermoreg
fl ow setpoint temperature is incremented by step of 4°C (max
12°C), delay time of temperature variation defi ned 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 accord-
ance with the type of heating system and press the OK button.
- low temperature system
(fl oor panels)
curve between 0.2 and 0.8
- high temperature system
(radiators)
curve between 1.0 and 3.5
°C 100
90
80
70
60
50
40
30
78 /
" and "OK" buttons until "Enter
3.5 3.0 2.5 2.0
1.5
1.2
1.0
0.8
0.6
0.4
0.2
10 5 0 -5 -10 -15 -20 °C
outdoor temperature
Curves graph
The checking process for the suitability of the curve requires a
long period of time during which several adjustments 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, indicating that
the set curve is exactly right;
Once you have found the curve which maintains the room tem-
perature at a constant level, check the actual temperature value.
4.2.3 Off set
Turn the knob and set the most suitable value. Press the OK but-
ton to confi rm.
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 corresponds to the desired value,
the curve is in the right position. 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 diff erent point of
origin of the curves for high-temperature systems, which is +10°C,
a correction which is usually made to the fl ow temperature in this
type of system, during climatic adjustment.
4.2.4 Room Infl uence Proportional
Press the OK button.
Turn the knob and set the most suitable value, then press the
OK button. The infl uence of the room sensor can be adjusted to
a value between 20 (maximum infl uence) and 0 (no infl uence).
This means the contribution of the room temperature to the fl ow
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 suitable
value, then press the OK button.
4.2.9 Heat request mode
Turn the knob and select:
- Standard
. RT Time Programs Exclusion
(RT is active also during night periods )
- 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 pre-
sent), selecting menu 5.
NOTE:
For the correct operation of the types of thermoregulation: 2.
Room T Only, 3. Outdoor T Only, 4. Room + Outdoor T, the pa-
rameter 12.0.3 must be set to value 1, or the function SCI must be
enabled.