Technical data

SERVICING
AND
MAINTENANCE
INSTRUCTIONS
_
CONDENSING WALL-HUNG BOILER – TG05A052.A0205
19
54321
S
6 7
14 13 8
12
11
9
10
CONTROL PANEL
KEY TO CONTROLS (fig. 1)
1. ON / OFF POWER BUTTON
2. HEATING TEMPERATURE ADJUSTMENT KNOB
3. DOMESTIC HOT WATER TEMPERATURE
ADJUSTMENT KNOB
4. OUTSIDE TEMPERATURE DISPLAY PAD (ONLY IF
OPTIONAL OUTSIDE TEMPERATURE SENSOR IS
FITTED)
5. SERVICE PAD
6. MODE SELECTION PAD (SUMMER ONLY / WINTER
ONLY / SUMMER AND WINTER)
7. EXTERNAL TERMINAL BLOCK (POWER SUPPLY )
8. DOMESTIC HOT WATER MODE (STABLE LIGHT)
DOMESTIC HOT WATER OPERATION (FLASHING
LIGHT)
9. HEATING MODE (STABLE LIGHT)
HEATING OPERATION (FLASHING LIGHT)
10. GENERAL LOCK-OUT WITH FLASHING ERROR CODE
ON DISPLAY (14)
11. WATER PRESSURE LEVEL 1.5 BAR INDICATOR
12. WATER PRESSURE LEVEL 1 BAR INDICATOR
13. WATER DEFICIENCY INDICATOR
14. TEMPERATURE AND ERROR CODES DISPLAY
ERROR CODES:
1. IONISATION LOCK-OUT
2. HIGH LIMIT THERMOSTAT LOCK-OUT
3. FLUE SAFETY THERMOSTAT LOCK-OUT
4. WATER PRESSURE SWITCH LOCK-OUT
5. HEATING SENSOR FAILURE
6. DOMESTIC HOT WATER SENSOR FAILURE
12. STORAGE TANK WATER SENSOR FAILURE
14. AIR PRESSURE SWITCH / WATER PRESSURE SWITCH LOCK-OUT
22. REQUEST OF PARAMETERS RE-SETTING
STARTING UP THE BOILER
After connecting up the water supply, before starting up the boiler, carry out the following procedures:
Preliminary procedure
• make sure the power supply for the boiler is the same as that stated on the plate (230V - 50Hz) and that the live, neutral and earth
connections have been properly connected;
• make sure the type of gas being supplied is the same as the type for which the boiler has been tested and approved (see plate data);
• make sure the unit is properly earthed;
• make sure there are no flammable liquids or materials in the immediate vicinity of the boiler;
• make sure that any shut-off valves in the heating circuit are open;
• open the gas cock and check the gas seals, making sure the counter shows no sign of leaks; in any case, double check by using a soapy
solution and eliminate all eventual leaks. The checking procedure for the gas burner attachment is carried out with the boiler working;
• make sure the electrical mains switch is OFF;
Filling the system
After making sure the gas cock is closed, fill the heating system as follows;
• fill the system until a pressure of 1.5 bar has been reached (light no. 11 ON; see fig. 1) and then close the tap on the filling loop;
• make sure the cap on the auto air vent valve is slightly loose to allow air to escape from the system;
• undo the cap on the circulation pump to eliminate any eventual air locks; it is a good idea to purge all radiators of air at this point too;
• before starting up the boiler the water pressure must be checked again; if this is seen to be below 0.5 bar, bring it back up to 1.5 bar (light
no. 11 ON; see fig. 1) and close the tap on the filling loop.
• set ON/OFF switch in ON position (fig.1), after a few seconds the pump will come into operation;
• once the boiler is working, if any noises are heard in the system, repeat the above air purging procedures until there is no air left in the
system;
• check there are no obstructions in the exhaust duct;
• check the pressure in the system: if this has gone down, comes on restore pressure;
• close the tap on the filling loop (see fig. 2) once this operation is completed;
• remove the P cap and fill the siphon S with water for ¾ of its total capacity (fig.3);
Fig. 1