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4. GAS ADJUSTMENTS
4.1. OVERALL VIEW
4.2. PRELIMINARIES
Type of appliance
Marking on the label of characteristics
Further indications
Factory setting for the Wobbe Wo index
in kWh/m3
Factory setting of the thermal capacity
for the production of hot water
Factory setting of the thermal capacity
for the heating
LL
Yellow adhesive label:
calibrated for 'L' type
methane
Wo=11.5 Kw/m3
(from 9.5 to 12.4 kWh/m)
20mbar
11.5
E
Yellow adhesive label:
calibrated for 'H' type
methane
Wo=14.1 Kw/m3
(from 11.4 to 15.2 kWh/m3)
20mbar
14.1
LPG
Yellow adhesive label:
calibrated for LPG
Wo=24.3 Kw/m3
(from 20.2 to 24.3
kWh/m3)
50mbar
24.3
Maximum thermal power
70% Maximum thermal power
Natural Gas LPG
NOTE: the values refer to the upper calorific power
Check that the indication for type of appliance (category and type of
gas calibration) reported on the label of characteristics corresponds
to the gas family / group of the gas supply.
The type of of appliance does not
correspond to the gas family of the
gas supply
The type of appliance corresponds
to the gas family of the gas supply
The type of appliance does not
correspond to the gas supply group
(but corresponds to the family).
The appliance cannot be installed or put into operation.
Check the regulation according to section 4.3
In the event of the heating power setting being different from the
thermal power setting required, the gas must be adjusted as in
section 4.3. Otherwise, it is enough to check the
correspondence.
Transform the boiler in accordance with section 4.5, after which:
Check the regulation in accordance with 4.3
Carry out the gas regulation in accordance with point 4.3 in
keeping with the thermal power requested.
Domestic hot water:
Heating:
Domestic hot water:
Heating:
A
B
C
4.3. GAS REGULATION
4.3.2. R
EGULATION OF THE THERMAL POWER
To regulate the gas, the sequence described below must be followed.
- Unscrew by 2 to 3 rotations the sealing screws marked “PE” of
the pressure measurement inlet nipple
- Connect up a pressure gauge
- Place the appliance in operation in accordance with the usage
manual
- Measure the connection pressure (dynamic pressure)
This pressure, for methane gas, must be between 18 and 25 mbar.
In the event that the pressure is outside of the above range, the
boiler must not be placed in operation.
- Turn off the boiler.
- Remove the pressure gauge.
- Screw in the sealing screws of the pressure measurement inlet
nipple and check the seal.
If it proves impossible to eliminate the defect, contact the gas supply
board.
4.3.1. INLET PRESSURE TEST
For the regulation of the gas in the ecoGENUS, two separate
operations are required.
A) Domestic hot water side (test only)
B) Heating side (regulation and test)
A) D
OMESTIC HOT WATER:
The thermal power for the hot water is set in the factory at the
maximum power.
For this reason the boiler does not need any regulation of the gas
from the "domestic hot water" side, just a test using the volumetric
method at the gas meter:
- Make sure that there are no other gas appliances in operation
during the test.
- Place the boiler in operation in accordance with the usage
manual and draw hot water (tap totally open, temperature knob
at 9).
N
OTE: the test of the volumetric rate of flow must be carried out for at
least two minutes of boiler operating time.
- Identify the volumetric rate of flow for the maximum thermal
power from the table at the end of this section.