DeDietrich G25 Manual de servicio descargar pdf (Pagina 31)

15/02/2011 - 300014279-001-J DTG(E)130 - 35/45/65/90/115 Eco.NOxPlus

8. Connecting the furnace

8 Connecting the furnace

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These actions must be carried out by a qualified

technician.

Installation must be carried out in accordance with the prevailing

regulations, the codes of practice and the recommendations in these

instructions.

Clean the gas supply pipe. The gas shut off valve should be located

on the back of the boiler. Pipe diameters must be defined in

accordance with ATG's (Association Technique de Gaz) B171

specifications.

To prevent damage caused by overpressure on the gas regulator, the

gas supply valve must be closed before carrying out the pressure test

on the gas supply pipe. Decompress before reopening the valve.

Maximum pressure: 150 mbar. In old gas networks, we recommend

fitting a gas filter with a large surface area and low water resistance

before this point.

8.1 Water discharge connection

Discharge condensation water directly into the main drain. Given the

degree of acidity (pH 3-5), use only plastic materials to make the

connection. Open the gas valve. Make the connection to the main

drain with a visible flow connection.

The discharge duct must have a minimum gradient of 50 mm/m

The

discharge of condensation water via the gutter is not authorised, given

the risk of frost and the damage to the materials usually used for gutters

8.2 Combustive air supply

For operation dependent on ambient air, the aeration and air

discharge vents in the premises must comply with the regulations.

Germany: TRGI' 86, Edition 1996.

The aeration of the flue gas discharge pipe may also be used as the

air discharge.

If a flue gas discharge pipe is connected in a chimney, position the

boiler as close as possible to the chimney. Avoid long horizontal

sections of flue gas pipe.

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Condensing boilers require a flue gas discharge system or a

fresh air inlet specially adapted to the method of operation.

Installation must be carried out in accordance with current laws.

8.3 Checking the gas inlet

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These actions must be carried out by a qualified

technician.

` Check the tightness of the gas line, including the gas valves.

` Open all the stop valves on the gas inlet.

` Empty the gas inlet.

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Maximum authorised pressure on the gas valve: 150 mbar. In

the event of higher control pressures, disconnect the

condensing boiler from the gas inlet at the threaded connection

to the gas stop valve. Closing the gas stop valve is not

sufficient.

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DeDietrich G25 Manual de servicio Pagina 31

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