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9- COMISSIONING
9.1 Comissioning, Filling Water into Boiler and Heater Installation
First of all, the electrical connection of the boiler is done. The electrical connection of the boiler must be
Connected to a grounded power supply line that can supply enough voltage (230 VAC, 50 Hz) for the boiler.
All radiator valves should be opened.
CH flow and CH return of boiler should be opened. Check them.
ATTENTION:
WRAS approved fiilling loop must be used while filling system.
Figure 22. Filling Loop
After all these processes, approved filling valve is slowly opened and filling procedure is initiated.
The filling process continues until the water pressure of 1.5-2 bar is seen on the LCD display and then the
filling valve is closed.
When the water pressure increases to 0.8 bar, the LCD will show "AP" and the boiler will switch to
automatic air vent mode. In this case you should definitely wait for 160 seconds without pressing "RESET".
Check water pressure on pressure indicator frequently and ensure that the pressure is between 1.5
and 2 bar when system is cold. If the pressure drops frequently, it means that there is a water leak in the
system. In such case, it is necessary to call a plumber.
ATTENTION
:
Always close the water filling valve, the installation water may leak
and damage the environment
.
To discharge air out of CH installation, purgers of the radiator is loosened
and air is discharged until water comes out of radiators. This procedure is done for all radiators.
Pressure is checked again on LCD screen. The filling valve is opened and again pressure is
raised to 1.5 - 2 bar level.
Radiator purgers are checked again to see if there is any air left inside of heating installation.
For full efficient heating, all air must be discharged.
Finally, check for any leaks in the radiator and piping.
ATTENTION:
In order to prevent calcification of the heat exchanger, you are
advised not to use well water, natural spring water instead of mains water.
Check the domestic water installation by opening the hot water tap. Check for
any leaks in the piping.
