Gas Conversion - Riello RESIDENCE HM Series Instructions For The User

3
ƒ The display will show the defined rpm for 10 sec, along with the rpm
icon.
ƒ By setting the maximum value, the boiler will operate at maximum
output; by setting the minimum value, the boiler will operate at mini-
mum output.
ƒ Check on the analyser that the values of CO
the following tables .
METHANE
GAS (G20)
20 HM IS
8,8
30 HM IS 8,8
(*) CO tolerance = ±1%
2
METHANE
GAS (G20)
20 HM IS 8,8
30 HM IS 8,8
(*) CO tolerance = ±1%
2
ƒ Check that the values of O
hydrogen mixture are in accordance with the following .
Qmax
O2 value relative to
the 20% hydrogen
mixture
Qmin
- The COMBUSTION ANALYSIS lasts a maximum of 15 minutes; you
can in any case terminate the procedure prematurely by pressing B.
- If the system is in low temperature, live, without mixing or thermostatic
valves, the COMBUSTION ANALYSIS must be carried out in DHW
request mode.
b
COMBUSTION ANALYSIS is terminated prematurely if:
- the delivery temperature exceeds 95°C; it will ignite again when
the temperature falls below 75°C
- a flame is not detected resulting in an alarm
- in the event of an alarm.
+
>2 sec
fan speed
in CH
MAX
1
or
2
MIN
max e min comply with
2
LIQUID GAS
(G31)
10,0 %
9,9 %
LIQUID GAS
(G31)
10,0 %
10,0 %
(max, nominal and min) related to 20%
2
20
HM IS
max % 2,4
nominal % 4,3
min % 6,2
max % 2,4
nominal % 4,3
min % 6,2
b
With the OT+ device connected, the combustion control function
cannot be activated. To carry out the flue gases analysis, set the
value for parameter P803 to 0. Remember to reset the parameter
value to reactivate the OT+ connection at the end of the flue gases
analysis.
When the check has ended:
ƒ exit function by pressing the key B
ƒ remove the analyser probe and close the combustion analysis outlet
with the relative plugs and screw
ƒ put the analysis probe adapter (supplied with the boiler) in the
documentation bag
ƒ set the boiler to the required operating mode, depending on the
season
ƒ regulate the requested temperature values according to needs.
or
5.11 Adjustments
The boiler has already been adjusted during manufacturing by the man-
ufacturer. However, if it is necessary to carry out the adjustments again
(for example after extraordinary maintenance, after replacing the gas
valve, after a gas transformation or after replacing the board) follow the
procedures described below.
Maximum and minimum power and maximum heating adjustments
must be carried out only by qualified personnel:
P306 minimum fan speed
P307 maximum fan speed
P309 maximum fan speed - heating
ƒ power the boiler
ƒ access technical parameters
the relevant parameter
ƒ set the desired values with the keys C and/or D,referring to the foll -
lowing tables
ƒ check that P309= P310.
b
The maximum heating fan speed used will be that set in parameter
P310.
table 1
MAXIMUM NO. FAN
ROTATIONS
20 HM IS Risc. - San.
30 HM IS Risc. - San.
table 2
MINIMUM NO. FAN
ROTATIONS
20 HM IS
30 HM IS

5.12 Gas conversion

The boiler is designed to operate with methane gas (G20) according to
the product label. It is possible to convert the boiler to LPG (G31) via the
parameter P201.
b
Conversion from a family gas to other family gas can be performed
easily also when the boiler is installed.
b
This operation must be carried out by professionally qualified per-
sonnel.
- Access the technical parameters
30
- Use key C or D to select the desired option:
HM IS
P201 = 1 (NG)
2,4
P201 = 2 (LPG)
4,3
P201 = 3
6,2
P201 = 4
2,4
b
4,3
Confirm the parameter change with ENTER, then switch off
6,2
the power supply to the boiler.
Once the GAS parameter has been modified, a new " GAC " procedure
must be carried out (see chap. 5.4). Check that the fan revolutions cor-
respond to what is indicated in tables 1 and 2, par. "5.11 Adjustments".
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P3 confirm
confirm
METHANE LIQUID GAS
GAS (G20) (G31)
6.300 - 6.300 6.100 - 6.100 rpm
7.400 - 8.600 7.100 - 8.200 rpm
METHANE LIQUID GAS
GAS (G20) (G31)
1.200 1.250 rpm
1.300 1.250 rpm
P2
select
P201 confirm.