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7 Start-up
7.7
Filling the hot water circuit
1.
Open the taps to fill the hot water circuit.
2.
Close the taps once the required volume of water has
flowed into the circuit.
◁
The hot water circuit is filled.
3.
Check all connections and the entire system for leak-
tightness.
7.8
Switching the product on and off
▶
Press the on/off button on the product.
◁
The basic display appears on the display.
7.9
Checking the gas settings
Only a qualified competent person is authorised to imple-
ment the CO2 setting on the gas valve assembly.
Never modify the factory setting of the gas pressure regu-
lator of the gas valve.
7.9.1
Checking the gas connection pressure (gas
flow pressure)
1.
Close the gas isolator cock.
1
2
2.
Use a screwdriver to undo the sealing screw on the
measuring nipple (1) of the gas valve.
3.
Connect a pressure gauge (2) to the measuring con-
nection (1).
4.
Open the gas isolator cock.
5.
Start up the product with check programme P.01 and
set the value.
20
–
Setting value for the programme P.01: 100
6.
Measure the gas connection pressure against atmo-
spheric pressure.
Permissible connection pressure
Germany
Natural gas
Liquid gas
Note
The connection pressure is measured at
the gas valve, meaning that the permissible
minimum value may be 0.1 kPa (1 mbar)
lower than the minimum value specified in
the table.
7.
Decommission the product.
8.
Close the gas isolator cock.
9.
Remove the pressure gauge.
10. Turn the screw on the measuring connection (1) as far
as it will go.
11. Open the gas isolator cock.
12. Check the measuring nipple for gas tightness.
Conditions: Gas connection pressure not in the permissible range
Caution.
Risk of material damage and operating
faults caused by incorrect gas connec-
tion pressure.
If the gas connection pressure lies outside
the permissible range, this can cause mal-
functions and damage to the product.
▶
Do not make any adjustments to the
product.
▶
Do not start up the product.
▶
If you are unable to remedy the fault, contact the gas
supply company.
▶
Close the gas isolator cock.
7.9.2
Checking the CO₂ content
1.
Start up the product with the check programme and set
the value.
–
Setting value for the programme P.01: 100
2.
Wait until the value that is read is stable.
Installation and maintenance instructions ecoTEC pure 0020258016_00
G20
1.7
... 2.5 kPa
(17.0
... 25.0 mbar)
G25
1.7
... 3.0 kPa
(17.0
... 30.0 mbar)
G31
2.5
... 4.5 kPa
(25.0
... 45.0 mbar)
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