Fondital KR 55, Инструкция по установке и использованию

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3.3. Filling the system
When all the boiler connections have been completed, the CH system can be filled with water.
This must be done with caution, following these steps in sequence.
- Open the air relief valve on all the radiators and check the efficiency of the automatic boiler valve.
- Gradually open the boiler filling tap and check that any automatic air relief valves work efficiently.
- Close the relief valves as soon as water starts to come out.
- Check on the reading on the water pressure gauge is in the range 1-1.3 bar.
- Close the filling tap and open all the valves on the radiators to remove any residual air.
- Start the boiler and as soon as the system reaches the working temperature, stop the pump and repeat the air bleeding procedure.
- Allow the system to cool down, then restore water pressure to 1-1.3 bar.
IMPORTANT
UNI CTI 8065/89 – Water treatment in domestic heating systems - establishes and defines the chemical and physical characteri-
stics required of the water used in heating systems of domestic use, in particular: “…. in order to optimize efficiency and safety,
to preserve them over time, to ensure regular operation of auxiliary equipment as well, and minimize energy consumption, in
compliance with the applicable laws and standards…”.
Compliance with this standard is a legal requirement (law no. 46 of 5390, Pres …
Use specific products suitable for multi-metal systems.
IMPORTANT
The low water safety pressure switch will prevent the burner from starting up when the water pressure is below 0.4-0.6 bar.
A pressure of 1-1.3 bar is recommended in the CH system. If necessary, open the boiler filling tap. This must be done with the
system cold.
The pressure gauge on the control panel shows the water pressure in the system.
IMPORTANT
If the boiler is not used for a long time, the pump may not work.
Before starting up the boiler, perform the following procedure to make sure that the pump works.
- Unscrew the protection bolt in the centre of the pump motor.
- Insert the tip of a screwdriver in the hole and turn the pump shaft clockwise.
-
Then screw the protection bolt back in and check for water leaks.
When the protection bolt is removed, some water may flow out. Dry off any wet surfaces, before remounting the boiler casing.
3.4. Starting the boiler
3.4.1. Preliminary checks
Before starting the boiler, perform the following checks:
- The flue gas exhaust pipe and terminal must be installed as instructed. When the boiler is running, no combustion products must leak
from any of the seals.
- The boiler must be supplied at 230 V – 50 Hz.
- The system must be filled with water (pressure reading on water gauge 1-1.3 bar).
- Any the stopcocks on the pipes must be open.
- The gas supplied to the boiler must be of the type for which the boiler is designed. If necessary, convert the boiler following the instruc
tions in § 3.6 – Adapting to other gases and regulating the burner. This operation must be carried out by a qualified service engineer.
- The gas supply stopcock must be open.
- There must be no gas leaks.
- The master power switch before the boiler must be on.
- The boiler safety valve must not be blocked.
- There must be no water leaks.
- The pump must not be blocked.
- The condensate trap installed on the boiler must discharge condensate correctly and not be clogged.
The boiler is equipped with a three-speed circulation pump, corresponding to three different residual heads.
It is delivered with the circulation pump on the third speed setting.
If you wish to set a different speed, taking account of the water circulation requirements in the boiler (controlled by
the water pressure switch) and the resistance properties of the system, check boiler operation under all the conditions
dictated by the features of the system (e.g. closure of one or more heating zones or thermostat-controlled valves).
3.4.2. Switching on and off
To switch the boiler on and off, refer to the User Instructions.