49
BUILDING TYPE
Determines the frequency with which the value of the calculated
outdoor temperature is updated, a lower value for this value is
used for buildings that have little insulation.
Setting range: [5min - 20min]
Factory setting: [5min]
OUTDOOR REACTIVITY (EXTERNAL SENSOR)
Determines the speed with which variations of the measured outdoor
temperature affect the calculated outdoor temperature value for
WEATHER COMPENSATION, low values indicate high speeds.
Setting range: [0 - 256]
Factory setting: [20]
To change the value of the previous parameters, proceed as
described below:
− access the technical parameters as explained in the section
“11.6 Access to the technical parameters”
− in sequence, select WEATHER COMPENSATION and TYPE OF
BUILDING rather than REACTIVITY EXT SENSOR with the “up” and
“down” buttons, confirming the selection with the “ENTER”
button
− set the desired value with the “up” and “down” buttons,
confirming the selection with the “ENTER” button.
NOTICE
: The value of the calculated outdoor temperature used
by the algorithm is displayed in the INFO menu under T EXT FOR
THERMOREG.
HEAT REQUEST FROM ROOM THERMOSTAT
In this case the outlet setpoint depends on the outdoor
temperature for obtaining a reference ambient temperature of
68°F (20°C). There are 2 parameters that compete to calculate the
output setpoint:
− slope of the compensation curve (KT)
− offset on the reference ambient temperature.
Selecting the OFFSET heating curve
The offset heating curve maintains a theoretical ambient
temperature of 68°F (20°C) at outdoor temperatures ranging
from 68°F to -4°F (+20°C to -20°C).
The choice of the curve depends on the rated minimum outdoor
temperature (of the geographical area) and the rated delivery
temperature (on the type of system) and must be carefully
calculated by the installer using the following formula using the
correct values in °F or °C:
Curve
selection
=
Nominal supply Temp. - Tshift
72°F (20°C) - min. external design Temp.
Tshift = 86°F (30°C) standard systems (radiators)
77°F (25°C) infloor systems
If the calculation generates an intermediate value between two
curves, choose the nearest offset heating curve to that value.
E.g.: if the value obtained by the calculation is 1.3, it lies between
curve 1 and curve 1.5. In this case, select the nearest curve, i.e.: 1.5.
Using the front control it is possible to set the curve:
- access the technical parameters as explained in the section”11.6
Access to the technical parameters”
- in sequence:
- select WEATHER COMPENSATION and CLIMATIC CURVES with the
“up” and “down” buttons, confirming the selection with
the “ENTER” button
- select the desired heating zone with the “up” and “down”
buttons, confirming the selection with the “ENTER” button
- set the desired climatic curve with the “up” and “down”
buttons, confirming the selection with the “ENTER” button.
The settable values of curves are:
- standard system: 1.0, 1.5, 2.0, 2.5, 3.0
- infloor system: 0.2, 0.4, 0.6, 0.8
TYPE OF HEAT REQUEST
If a room thermostat is connected to the boiler: room thermostat
The room thermostat makes a heat request when its contact
closes, while it stops it when its contact opens. Though delivery
temperature is automatically calculated by the boiler, the user
may manually override it. By modifying HEATING on the user
interface, the HEATING SET POINT will no longer be available but
just a value that can be set from +5 to -5 as required. Please
note that the number displayed is a comfort level: +5 means
it feels hotter, -5 means it feels colder. Modifications to this
value do not directly change supply temperature but affect
the calculation made to automatically determine its value by
modifying the reference temperature of the system (0 = 68°F
(20°C)).
OUTDOOR RESET CORRECTION
OUTDOOR TEMPERATURE
FL
O
W
TEMPER
ATURE
86 77 68 59 50 41 32 23 14 5 -4
194
176
158
140
122
104
86
68
50
0 C
+ 5 C
- 5 C
10
20
30
40
50
60
70
80
90
-20
-15
-10
-5
0
5
10
15
20
25
30
(°C)
(°F)
(°C)
(°F)
OUTDOOR TEMPERATURE
DELI
VERY
TEMPERA
TURE
PROGRAMMABLE
TIMER (DAY+NIGHT)
Available if NIGHT COMP parameter is settet to “FUNCION ACTIVE”.If
a programmable timer (day+night selector) is connected to the
boiler. When the contact is closed, the heat request is made by the
delivery sensor on the basis of the external temperature in order to
maintain the rated ambient temperature at the DAY level 68°F (20
°C). When the contact opens, it does not stop the heat request
but reduces (parallel shift) the temperature curve to the NIGHT
level 61°F (16 °C).
This activates the night mode.
Though supply temperature is automatically calculated by the
boiler, the user may manually override it.
By modifying HEATING on the user interface, the HEATING SET POINT
will no longer be available but just a value that can be set from
+5 to -5 as required. Please note that the number displayed is a
comfort level: +5 means it feels hotter, -5 means it feels colder.
Modifications to this value do not directly change flow
temperature but affect the calculation made to automatically
determine its value by modifying the reference temperature of
the system (0 = 68°F (20°C) for DAY level; 61°F (16°C) for NIGHT level).
If a RiCLOUD is installed refer to instructions for setting the
outdoor sensor.
NIGHT SETBACK
NIGHT SETBACK
Riduzione notturna PARALLELA
10
20
30
40
50
60
70
80
90
-20
-15
-10
-5
0
5
10
15
20
Temperatura Esterna
Temperatura di
Curva climatica GIORNO
Curva climatica NOTTE
Outdoor reset - DAY
Outdoor reset - NIGHT
OUTDOOR TEMPERATURE
68 59 50 41 32 23 14 5 -4
194
176
158
140
122
104
86
68
50
FL
O
W
TEMPER
ATURE
(°C)
(°F)
(°C)
(°F)
OUTDOOR TEMPERATURE
DELI
VERY
TEMPERA
TURE
11.11
First commissioning
- Turn the systems master power switch to the “on” position.
- Open the gas cock to allow fuel to flow.
- Adjust the programmable thermostat to the desired
temperature ~68°F (~20°C) or, if the system is equipped with
a thermostat, programmable timer or the front control set as
Содержание Family PRO 42 IS
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