Fondital Antea 24kW Range, Руководство по установке, использованию и обслуживанию

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4.12. filling the system
Once all boiler connections have been completed, CH system can be filled.
The procedure is to be cautiously carried out, following each step:
- open the air purging valves on all radiators and verify the boiler automatic valve operation;
- Gradually open the relevant filling loop connection, checking any automatic bleeding valves installed in the system properly work;
- close all radiator air purging valves as soon as water starts coming out;
- check boiler water pressure gauge not to exceed 1÷1.3 bars reading;
- shut the filling loop and bleed any air out again, by opening the air bleeding valves on radiators;
- start the boiler and bring the system to working temperature, stop the boiler and wait for the pump to stop, then repeat the air bleeding
procedures;
- allow the system to cool and restore water pressure to 1÷1.3 bars.
WARNING
As regards treating water in domestic heating systems, it is advisable to use propriety branded products that are suitable for
multi-metal plants, in order to optimize performance and safety, preserve these conditions over time, ensure regular operation of
auxiliary equipment as well, and minimize energy consumption, in compliance with the applicable laws and standards.
WARNING
The safety low water flow switch protecting the heating system will not electrically enable the burner ignition when water flow rate is
too low.
The low water safety pressure switch will not electrically enable the burner ignition when water pressure is below 0.4÷0.6 bar.
CH water pressure is not to be less than 1 bar. Restore proper value as needed, via the external filling loop of the boiler.
The procedure is to be followed while the system is cold. The pressure gauge fitted on the boiler control panel indicates the pressure in
the CH system.
WARNING
After long inactivity of the boiler, its pump may be stuck. Before starting up the boiler, make sure that the pump is operating, by the
following procedure:
- unscrew the protective cap at the centre of the pump motor;
- put a screwdriver into the hole and manually rotate the circulation pump shaft clockwise;
- once the unblocking operation is completed, screw the protective cap back on and check for water leaks.
When the protection cap is removed, some water may flow out. Before refitting the boiler casing ensure that all surfaces are properly
dried.
4.13. Starting up the boiler
During first ignition of the boiler pour a glass of water in the flue gas tower so that the condensate trap is filled with water.
This is a guarantee for the boiler’s tightness.
4.13.1. Preliminary checks
Before starting the boiler, check that:
- the flue gas discharge duct and the relative terminal are installed in conformity with the instructions: with the boiler operating there must
be no leakage of combustion by-products from any of the gaskets;
- the supply power to the boiler must be 230 V – 50 Hz.
- the system is correctly filled with water (pressure gauge reading 1 to 1.3 bar);
- any shut-off cocks in the system pipes are 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 instructions in
subsection 4.14.
Conversion to other gases types and burner adjustment
. This operation must be carried out by a qualified service engineer;
- the gas supply cock is open;
- the gas tightness test shows there are no gas leaks;
- the main switch installed adjacent to the boiler is turned on;
- the 3-bar safety valve is not stuck;
- there are no water leaks;
- the pump has not seized.
- the condensate trap installed on the boiler is discharging condensate correctly and is not stuck.
WARNING
The boiler is equipped with a three-speed pump; three different residual head values correspond to each speed, according to the
curves shown in figures 24 and 25.
It is delivered with the circulation pump set at the third speed setting.
If you wish to set a different speed, taking into account the water circulation requirements in the boiler (confirmed by the main water
flow switch) and the resistance properties of the system, check operation of the boiler in all the conditions dictated by the features of
the system (e.g. closure of one or more heating zones or of thermostat-controlled valves).
4.13.2. Switching on and switching off
To switch the boiler on and off, refer to the
Instructions for the User.