Riello RESIDENCE HM Series Instructions For The User page 13

At the end of the function, the parameter automatically returns to 0.
If the GAC procedure is not completed, the system allows the execution of
a GAC retry which is indicated on the display with "RTY" and then proce-
eds by pressing the key B.
NOTE: If it is not possible to dissipate heat in the domestic hot water, it
is however possible, for high temperature systems, to carry out the GAC
on heating request, setting the heating water setpoint at 80.5°C or even
better, activating the combustion analysis
on, start the GAC.
main screen.
If the procedure is not carried out when it is mandatory to do so, it may
lead to a limited operation and the possibility of abnormal combustion
control signals occurring.
If a fault occurs during the procedure, or if the heat request is interrupted,
the procedure would be prematurely terminated by displaying the fault
status or automatically returning to the main screen. In this case, the
procedure must be repeated.
5.5 Setting the thermoregulation
Thermoregulation is only available with an outdoor temperature sensor
connected and is only active for the HEATING function.
THERMOREGULATION is enabled in the following way:
access the parameter P4
With or the outdoor temperature sensor disconnected, the boil-
er .
The temperature value measured by the outdoor temperature sensor is
displayed in the "6.3 INFO menu" at I009.
The thermoregulation algorithm will not use the measured outdoor tem-
perature value directly, but rather a weighted outdoor temperature value,
which takes account of the insulation of the building: in well-insulated
buildings, external temperature variations have less influence on the
room temperature than in less insulated buildings.
This value can be displayed in the INFO menu at I010.
REQUEST FROM OT CHRONOTHERMOSTAT
In this case, the delivery setpoint is calculated by the timed thermostat
on the basis of the outdoor temperature value, and by the difference
between the real ambient temperature and the required ambient tem-
perature.
REQUEST FROM ROOM THERMOSTAT
In this case, the delivery setpoint is calculated by the adjustment board
on the basis of the outdoor temperature value, to obtain an estimated
ambient temperature of 20° (reference ambient temperature).
There are 2 parameters that are used to calculate the delivery setpoint:
slope of the compensation curve (KT) - modifiable by technical per-
sonnel
offset to reference ambient temperature - can be modified by the user.
TYPE OF BUILDING (parameter P433)
It is indicative of the frequency with which the value of the calculated
outdoor temperature for thermoregulation is updated, a low value for this
value will be used for buildings that have little insulation.
REACTIVITY SEXT (parameter P434)
It is an indication of the speed with which variations of the measured
outdoor temperature affect the calculated outdoor temperature value for
thermoregulation, low values indicate high speeds.
Choice of thermoregulation curve (parameter P419)
The heating thermoregulation curve maintains a theoretical tempera-
-20°C. The choice of the curve depends on the minimum design outdoor
B 3 times to return to the
.
13
temperature (and thus the geographical location) and the design flow
temperature (and thereby the type of system) and should be carefully
calculated by the installer, according to the following formula:
KT =
20- min. outdoor project T.
Tshift = 30°C standard system
25°C floor installations
If the calculation gives an intermediate value between two bends, you
are advised to choose the thermoregulation bend closest to the value
obtained.
if the value obtained from the calculation is 1.3, it lies between
Example:
curve 1 and curve 1.5. Choose the nearest curve, i.e. 1.5. The settable
KT values are as follows:
standard system: 1,0÷3,0
free-standing system 0,2÷0,8.
With parameter 419 set the chosen thermoregulation curve:
100
90
T AT
80
70
60
50
T BT
40
30
20
20 15 10
External temperature (°C)
T AT maximum heating setpoint temperature standard systems
T BT
Offset on the reference ambient temperature
In any case, the user can indirectly modify the HEATING setpoint value by
inserting an offset on the reference temperature (20°C). This offset may
"8.4 Heating setpoint setting with outdoor temperature sensor".
CLIMATIC CURVE CORRECTION
90
80
70
60
50
40
30
+5°C
20
20°C
-5°C
10
30 25 20 15
External temperature (°C)
NIGHT COMPENSATION (parameter P420)
If a time programmer is connected to the input ROOM THERMOSTAT,
from the parameter night compensation can be enabled.
set parameter = 1.
In this case, when the CONTACT is CLOSED, the heat request is made
by the flow probe on the basis of the outdoor temperature, to obtain
CONTACT does not produce a switch-off, but rather a reduction (parallel
shift) of the climatic NIGHT curve (16°C).
RIDUZIONE NOTTURNA PARALLELA
90
80
70
Curva climatica GIORNO
60
50
40
30
20
10
20 15 10
Temperatura esterna (°C)
In this case too, the user can indirectly modify the HEATING setpoint
value by inserting an offset on the reference DAY temperature
(20°C) or NIGHT temperature (16°C). This offset may vary from [-5
connected. To correct the offset, refer to paragraph "8.3 Heating
setpoint setting".
- Tshift
3,0 2,5 2,0
1,5
1,0
0,8
0,6
0,4
0,2
5 0 -5 -10 -15 -20
10 5 0 -5 -10 -15 -20
Curva climatica NOTTE
5 0 -5 -10 -15 -20