Manual Ariston E-System One (page 47 of 80) (English)

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MAINTENANCE

Important

Maintenance is an essential part of the safe and

efcient operation of the boiler and ensures its

durability. It should be performed according to the

instructions given in current legislation. Perform

combustion analysis regularly in order to check the

operating efciency of the boiler and to make sure

any polluting substances released are within the

boundaries set by current legislation.

Before beginning maintenance work:

- Disconnect the appliance from the electricity supply by

turning the external bipolar switch to the “OFF” position;

- Close the gas valve and the central heating and domestic

hot water system valves.

After the work has been completed the initial settings will be

restored.

General comments

It is recommended that the following inspections be

carried out on the boiler at least once a year:

1. Check the seals in the water part and, if necessary, replace

the gaskets and restore the seal to perfect working order.

2. Check the seals in the gas part and, if necessary, replace

the gaskets and restore the seal to perfect working order.

3. Visually check the overall condition of the boiler.

4. Visually check and, if necessary, disassemble and clean

the burner.

5. Following the inspection detailed in point “3”, disassemble

and clean the combustion chamber, if necessary.

6. Following the inspection detailed in point “4”, disassemble

and clean the burner, if necessary.

7. Cleaning the primary heat exchanger

8. Make sure the following heating safety devices are

operating correctly:

- temperature limit safety device.

9. Make sure that the following gas part safety devices are

operating correctly:

- absence of gas or ame safety device (ionisation).

10. Check the efciency of the domestic hot water production

process (test the ow rate and temperature).

11. Perform a general inspection of the boiler operation.

12. Remove oxide from the detection electrode using an emery

cloth.

13. These checks are not exhaustive. Further mechanical,

electrical and combustion maintenance checks may be

required.

Operational test

After having carried out the maintenance operations, ll the

heating circuit at a pressure of approximately 1.5 bar and release

the air from the system.

Fill the domestic hot water system at the same time.

- Begin operating the boiler.

- If necessary, release the air from the heating system again.

- Check the settings and make sure all the command,

adjustment and monitoring parts are working correctly.

- Check the ue system is sealed and operating correctly.

Draining procedures

The heating system must be drained using the following

procedure:

- Switch off the boiler, make sure the external bipolar switch is

in the OFF position and shut off the gas valve;

- Loosen the automatic air relief valve;

- Open the system drain off cock and collect the escaping water

in a container;

- Empty the water from the lowest points of the system (where

applicable).

If the system is to be left inactive in areas where the room

temperature may fall below 0°C during winter, we recommend

that anti-freeze liquid is added to the water in the heating system

in order to avoid the need for repeated draining; when this liquid

is used make sure it is compatible with the stainless steel used

for the bodywork of the boiler.

We recommend the use of anti-freeze products which contain

PROPYLENE GLYCOLS as these inhibit corrosion and that they

are used in conjunction with the anti-scaling and anti-corrosion

function, in the quantities suggested by the manufacturer, at the

mimimum temperature.

Regularly check the pH level of the water/anti-freeze mix in the

boiler circuit and replace it when the value measured is lower

than the limit prescribed by the manufacturer.

DO NOT MIX DIFFERENT TYPES OF ANTI-FREEZE.

The manufacturer will not be held liable for any damage caused

by the appliance or the system due to the use of inappropriate

anti-freeze substances or additives.

Draining the domestic hot water system and indirect cylinder

Every time there is a danger of freezing, the domestic hot water

system must be drained as follows:

- Shut off the water mains inlet valve;

- Open all the hot and cold water taps;

- Empty the water from the lowest points of the system (where

applicable).

WARNING

Before handling, empty all components which may contain hot

water, performing bleeding where necessary.

Descale the components in accordance with the instructions

provided on the safety data leaet supplied with the product

used, make sure the room is well ventilated, wear protective

clothing, avoid mixing different products, and protect the

appliance and surrounding objects.

Seal all openings used to take a gas pressure reading or to

make any gas adjustments.

If a smell of burning is detected or smoke is seen leaking from

the appliance, or there is a smell of gas, disconnect it from the

electricity supply, shut off the gas valve, open the windows and

call for technical assistance.

Cleaning the primary exchanger

Cleaning the combustion side

The inside of the primary exchanger is accessed by removing

the burner. Wash with water and detergent using a non-metallic

rie-type brush, rinse with water.

Cleaning the trap

The trap is accessed by emptying the condensate bowl located

in the bottom section. Wash with water and detergent.

Replace the condensate collection bowl in its housing.

NB: In the event of prolonged use of the appliance, the trap

must be lled before being used again.

A lack of water in the trap is dangerous and may cause pro-

ducts to be released into the atmosphere.

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Ariston E-System One Manual

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