Display items
Meaning
Flue sensor open
Error 46
The flue sensor has detected a temperature
outside the admissible range (equivalent to short circuit)
Water pressure error
Error 47
The water pressure switch is disconnected or damaged
Gas pressure
Error 76
Low gas pressure (pressure switch tripped)
Syphon error
Error 77
The syphon sensor has detected excessively high pressure
Error 80
Ret. T. > Supply T.
Error 81
Test in progress on temperature difference between sensors
If the test fails, Error 15 is displayed.
Error 82
The heat exchanger sensor has shorted or detected a temperature
outside the admissible range (equivalent to short circuit)
Error 83
The heat exchanger sensor is detached or has detected a temperature
outside the admissible range (equivalent to short circuit)
Error 84 High heat exchanger temperature (heat exchanger T > Supply T +10°C)
Error 89
Incompatible programming (e.g. Max< Min.)
Error 91
Cascade sensor in DC
Error 92
Cascade sensor in AC
Error 93
Outside sensor in DC
Error 94
Error in display board
Error 95
General cascade sensor error
Error 96
Outside sensor in AC
Error 97
Cascade connection defective
Error 98
Boiler bus connection error
Error 99
Internal boiler bus error
2D
D
OPERATIONAL CHECKS - CALIBRATION AFTER GAS TYPE CHANGES
For the gas change procedure, see the specific section on page 46.
To perform the operational checks and/or calibration after a gas
change, proceed as follows:
- Activate the MANUAL TEST function and press
A
to increase
power to 100% (see section "MANUAL TEST function" page 47).
This sets the heating unit to operate at Maximum Capacity.
- The blower RPM is shown on the display, at maximum capacity.
Check that this value corresponds to the value stated in the table
“TECHNICAL SPECIFICATIONS”.
- Measure the gas flow rate, taking into account any relevant
corrective factors.
- Use the analyser to take CO2 and CO readings.
The test hole for flue analysis must be made on the straight section
of the flue duct at a distance of at least twice the diameter from the
appliance outlet (refer to current standards).
Compare the readings with those stated in the table below,
considering a tolerance of ± 5%.
DESCRIPTION
S - AF
115
150
200
240
280
Max. gas consumption
G20
11.96
15.87
21.16
24.87
29.10
m
3
/h
G31
8.78
11.66
15.54
18.26
21.37
kg/h
Min. gas consumption
G20
2.22
3.17
3.76
4.50
5.24
m
3
/h
G31
1.63
2.33
2.76
3.30
3.85
kg/h
Max/min CO
2
(average values)
G20
9.3/9.1
%
Max/min CO
2
(average values)
G31
10.6/10.3
%
CO
25
30
35
30
28
ppm
- 50
-
INST
ALLA
TION
Summary of Contents for S-AF
Page 63: ...NOTES 63 ...