Instructions For Fitters; General Precautions; Instructions Prior To Installation - Westen Boyler digit 240/40 Fi Manual Del Usuario

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The following remarks and instructions are addressed to Service Engineers to help them carry out a faultless installation. Instructions

regarding lighting and operation of the boiler are contained in the 'Instructions pertaining to the user' section.

Note that installation, maintenance and operation of the domestic gas appliances must be performed exclusively by qualified personnel

in compliance with current standards.

Please note the following:

* This boiler can be connected to any type of double- or single feeding pipe convector plates, radiators, thermoconvectors. Design the

system sections as usual though taking into account the available output / pump head performances, as shown in section 25.

* Do not leave any packaging components (plastic bags, polystyrene, etc.) within children's reach as they are a potential source of dan-

ger.

* Initial lighting of the boiler must be effected by a Qualified Service Engineer.

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

12. INSTRUCTIONS PRIOR TO INSTALLATION

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.

Before having the boiler installed by a qualified fitter, check the following:

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 flue terminal draft is appropriate, that the terminal is not obstructed and that no exhaust gases from other applian-

ces are expelled through the same flue 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 flue ducts, these have been thoroughly cleaned as residual products of combustion

may detach from the walls during operation and obstruct the flow 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 flush the system after installation of the appliance and before use.

1.3.

The materials used for the domestic hot water circuit of the product comply with Directive

2. Heating circuit

2.1. new system

Before proceeding with installation of the boiler, the system must be cleaned and flushed 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 guarantee null and void.