Appendix
22
Installation and maintenance instructions atmoMAG 0020271929_00
Appendix
A
Commissioning checklist
No.
Procedure
Comment
Required tool
1
Checking the water filter
Check for availability.
2
Check the starting water flow rate
before start-up
The water flow rate must not exceed
the maximum value.
3
Starting up the product
4
Check the entire gas route for tightness
Use leak detection spray or a leak
detector.
Leak detection spray/leak detector
5
Check the entire water route for tight-
ness
Carry out a visual check.
6
Checking that the flue gas sensor
works correctly
See section "Checking that the flue gas
sensor works correctly".
Vaillant flue gas restrictor
7
Measuring the chimney draught
The maximum draught must not ex-
ceed 15 Pa. If the draught is too great,
the chimney draught must be restricted
using suitable measures.
Analyser for chimney draught
8
Checking combustion
Check for flue gas exit.
Target value for nominal heat input:
Only carry out the measurement after
ten minutes of normal operation.
–
Natural gas: CO 200 ppm
Liquefied petroleum gas: CO
300 ppm
Dew point hygrometer
CO analyser
9
Checking the gas flow pressure
See section "Checking the gas flow
pressure".
U-tube or digital manometer
10
Switching off the product and switching
it back on again
11
Setting the domestic hot water function
12
Handing over the operating instructions
to the customer
B
Troubleshooting
Symptom
Possible cause
Measure
The product does not work. The
LED does not light up.
The water pressure is too low.
1.
Ensure that the cold-water isolation valve is open.
2.
Check the water valve. (
→
Page 18)
The product cannot be started
up. The LED flashes red for up
to ten minutes after water is
drawn.
The gas supply is interrupted.
1.
Secure the gas supply.
2.
For liquefied petroleum gas: Replace an empty gas cylinder
with a full one.
3.
Ensure that the isolation valve on the gas connection is
open.
There is air in the gas supply
line.
▶
Open and close the water tap several times in order to remove
air from the gas supply.
Fault in the ignition device
1.
Check the cable connection for the plug contact.
2.
Replace the electrodes.
The servomotor is defective.
▶
Replace the servo valve.
The product switches off during
operation. The LED flashes red.
The gas supply is interrupted.
1.
Secure the gas supply.
2.
For liquefied petroleum gas: Replace an empty gas cylinder
with a full one.
3.
Ensure that the isolation valve on the gas connection is
open.
There is air in the gas supply
line.
▶
Open and close the water tap several times in order to remove
air from the gas supply.
Ionisation flow too low.
▶
Check the ionisation flow.
The flame detector is defective.
1.
Check the cable connection for the plug contact.
2.
If required, replace the monitoring electrode.
