Bedienungsanleitung De Dietrich MS 24 BIC (Seite 66 von 292) (Englisch, Französisch, Italienisch, Spanisch, Polnisch)

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71.06953.01 - EN

INSTALLATION INSTRUCTIONS

This boiler has been designed to heat water to a temperature lower than boiling point at atmospheric pressure.

It must be connected to a central heating system and to a domestic hot water supply system according to its performance

and power output.

Do the following before connecting the boiler:

a) Make sure that the boiler is adjusted to use the type of gas delivered by the gas supply. To do this, check the markings

on the packaging and the rating plate on the appliance.

b) Make sure that the ue terminal draft is appropriate, that the terminal is not obstructed and that no exhaust gases

from other appliances are expelled through the same ue duct, unless the latter has been specially designed to collect

exhaust gas from more than one appliance, in compliance with current laws and regulations.

c) Make sure that, if the boiler is connected to existing ue ducts, these have been thoroughly cleaned as residual products

of combustion may detach from the walls during operation and obstruct the ow of fumes.

To ensure correct operation and maintain the warranty, observe the following precautions:

1. DHW circuit:

1.1. If the water is harder than 20 °F (1 °F = 10 mg calcium carbonate per litre of water), install a polyphosphate dispenser

or an equivalent treatment system, compliant with current regulations.

1.2. Thoroughly ush the system after installation of the appliance and before use.

1.3. The materials used for the product’s DHW circuit comply with Directive 98/83/CE.

2. Heating circuit

2.1. new system

Before proceeding with installation of the boiler, the system must be cleaned and ushed to eliminate residual

thread-cutting swarf, solder and any solvents, using suitable proprietary products. To avoid damaging metal, plastic

and rubber parts, only use neutral cleaners, i.e. non-acid and non alkaline. Recommended cleaning products are:

SENTINEL X300 or X400 and FERNOX Regenerator for heating circuits. Use these products in strict compliance

with the manufacturers’ instructions.

2.2. existing system:

Before installing the boiler, drain the system and clean it to remove sludge and contaminants, using suitable

proprietary products as described in section 2.1.

To avoid damaging metal, plastic and rubber parts, use only neutral cleaners, i.e. non-acid and non-alkaline such

as SENTINEL X100 and FERNOX Protector for heating circuits. Use these products in strict compliance with the

manufacturers’ instructions.

Remember that the presence of foreign bodies in the heating system can adversely affect boiler operation (e.g.

overheating and excessive noise of the heat exchanger).

Failure to observe the above will render the warranty null and void.

13. INSTRUCTIONS PRIOR TO INSTALLATION

13. INSTALLAZIONE DELLA CALDAIA 14. INSTALLING THE BOILER

After deciding the exact location of the boiler, make sure there is sufcient room to perform maintenance operations (at

least 450 mm of headroom is required in order to replace the expansion vessel).

Connect the system to the gas and water inlets present on the lower bar of the template. Fit two G3/4 taps (ow and

return) on the central heating circuit; these taps make it possible to carry out important operations on the system without

draining it completely. If you are either installing the boiler on an existing system or replacing one, as well as the above,

t a settling tank under the boiler on the system return line in order to collect any deposits and scale circulating in the

system after ushing. After xing the boiler to the template, connect the ue and air ducts, supplied as accessories, as

described in the following sections.

If the model

24 BIC

natural draught boiler is installed, connected it to the ue with a metal pipe resistant to normal me-

chanical stress, heat, products of combustion and relative condensate.

IMPORTANT

After lling the boiler, vent the entire internal circuit and the system as follows:

• close the gas on-off valve;

• power the boiler.

• open the vent valve on the pump body;

• press ( ) to set the boiler in the “WINTER” operating mode;

• send a heat demand from the room thermostat;

• open a hot water tap to alternate CH demand with DHW demand;

• after a few ignition attempts the boiler will shut down (error E01 appears on the display);

• to rest, press and hold down “R” for at least 2 seconds;

• repeat the procedure at least another two times;

• close the vent valve.

After venting the boiler circuit, proceed with initial lighting.

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De Dietrich MS 24 BIC Seite 66

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