Appendices
30
8
8
APPENDICES
8.1
ADVANCED GAS-FIRED CONVECTOR
ADJUSTMENT AND CONTROL
FUNCTIONS
The transparent control parameters are listed in the table
below.
Access to the transparent control parameters is re-
stricted to professionally qualified personnel.
Table 8.1
List of transparent control parameters
n
Function
Default value
Allowed setting
User level
1
Gas type selection
0
0 = natural gas
1 = LPG
installer
2 (1)
Activation of gas valve calibration/fixed
power function (“chimney sweep”)
0 = off
1 = operation at fixed power (min)
4 = operation at fixed power (max)
15 = calibration function ON
installer
3
Maximum gas pressure calibration
installer
4
Minimum gas pressure calibration
installer
5
Gas-fired convector modulation
0
0 = modulating
1 = fixed power (max)
2 = fixed power (min)
installer
6
Gas-fired convector heat output
100
from 0 to 100% within the permitted
modulation range
installer
7
Ambient hysteresis modulation
30
from 0 to 30 (= 0÷3 K)
installer
8
External request enable
0
0 = disabled
1 = enabled
installer
9
External room thermostat function enable
0
0 = disabled
1 = enabled
installer
10 (2)
Service parameters access code
0
0÷255
assistance
11
Room fan activation temperature setting
40
from 0 to 60 °C
assistance
12
Ambient temperature probe reading offset
15
0 = - 7,5 K
15 = 0 °C
30 = + 7,5 K
assistance
13
Room fan start timer
60
from 0 to 240 s
assistance
14 (4)
Room fan stop timer
120
from 0 to 240 s
assistance
15
Blower post-operation timer
15
from 0 to 240 s
assistance
16
Operation with flue gas pressure switch
enable
1
0 = with pressure switch
1 = without pressure switch
assistance
17
Start-up heat output (ramp start)
50
from 0 to 100% power
assistance
18
Overheating trip level
75
from 40 to 90 °C
assistance
19 (3)
Heat exchanger temperature
-
assistance
1
After enabling calibration with parameter 2 = 15 wait until the parameter assumes the value 20, then proceed with the next calibration steps.
2
The parameter "service parameters access code" is used as a password for access to the subsequent parameters. If not set correctly (value = 27) access to the subse-
quent parameters is not allowed. It remains active until power off or 24h maximum if the power supply is not disconnected.
3
Display only. The system allows changing the value but then returns to the read value.
4
If the gas-fired convector remains on for more than 60 minutes, the time is doubled.
8.1.1
Description of advanced functions
P001 – Gas type selection
Adjusts the gas valve in accordance with the gas used
(natural gas or LPG).
P002 – Activation of the gas valve calibration
procedure
Allows activation of the gas valve calibration procedure at
maximum and minimum operating pressure.
P003 – Maximum gas pressure calibration
Allows calibration of the maximum gas pressure.
P004 – Minimum gas pressure calibration
Allows calibration of the minimum gas pressure.
P005 - Gas-fired convector modulation
Allows operation in automatic modulation mode, or fixed
at minimum or at maximum power.
P006 – Gas-fired convector heat output
Determines the maximum power output of the gas-fired
convector, in case the gas-fired convector is oversized and
lower heat output than the nominal one is required.
P007 – Ambient modulation hysteresis
Indicates the temperature value (rising) from which the
gas-fired convector operates in modulation. The default is
10, corresponding to 1 °C. This means, for example, that if
the setpoint is 20 °C, when the room temperature probe
reads a value lower than 19 °C, the gas-fired convector
runs at maximum speed; when it reads a value of 19 °C (1
°C lower than the setpoint), the gas-fired convector mod-
ulates (indicated by the small flame on the display).
P008 – External request enable
Allows the gas-fired convector to be controlled by an
