25
ATTENTION!
Boiler sensors do not work as the signalling equipment. When the floor heating is used, it must be
provided by an external thermostat. Otherwise, in the case of manual opening of the three-way valve, the
floor heating may be damaged.
9
Maintenance
The boiler housing can be washed using lukewarm detergent solution.
All other maintenance can be performed only by a contractual service organization
trained by the manufacturer!
9.1
Checking the device
1. Unplug the boiler by unplugging the cord from the mains. Close the gas supply, remove the front cover of the
boiler.
2. Disconnect the fan connectors.
3. Disconnect the gas supply to the mixer.
4. Disconnect the silicone hose from the mixer.
5. Disconnect the grounding conductor of the electrode.
6. Remove the burner plate and the fan (unscrew 4 nuts M6).
7. Clean the burner using a steel brush and purge with air. Remove possible impurities on the ignition electrode
using emery paper.
8. Check mixer visually.
9. The body should be cleaned using one of the following ways:
a) Spray Metanotherm through the burner chamber on the body convection surface.
b) Pour diluted soap solution through the burner chamber - leave for 10 min. and rinse with clean water. Any
impurities will be discharged through a siphon.
10. Install the burner plate by means of 4 nuts and washers M6, connect the fan connectors according to the
wiring. Then connect:
-
silicone hose to the mixer,
-
gas inlet to the mixer,
-
grounding wire to the ignition electrode.
When assembling various parts, it is necessary to take care they are assembled in the correct order and
direction. All seals that were removed during assembly, must be checked and replaced, if necessary.
11. Open gas supply uwing the ball valve.
12. Check all el. parts which had to be disconnected, whether they are connected to the respective locations
according to the wiring diagram, and plug the cord to the mains.
13. Check for gas leaks using a gas detector or foaming solution.
14. It is necessary to check whether the burner plate is well-sealed and tightened using the gas detector.
15. Check the pressure in the heating system using a pressure gauge on the boiler and check the safety valve
functionality. If there is the pressure drop in the system, refill the central heating system with water to the
required value. 80 kPa (0.8 bar).
16. Mount the front cover
17. Check the boiler setting according to chap. no. 7.7 and check the performance according to the consumption
readings at the gas meter.
