Hoval TopVent GV, Руководство по эксплуатации, Страница: 23 / 44

8.4 Flue gas evacuation and combustion air supply
■ In all cases, use only the original flue gas accessories approved for use with the
units for the installation. Do not combine systems from different manufacturers.
■ Observe national / local regulations when planning the flue gas evacuation and
the combustion air supply. From an early stage, coordinate the installation with
the responsible district chimney sweep authorities and obtain the necessary
authorisation from the local building authority.
■ Provide suitable openings for the roof and wall feed-through of the flue gas
ducts.
■ Use flue pipes with the same diameter as the combustion air and flue gas
connections on the unit.
■ Observe the maximum length of the flue gas duct (see Table 10 and Table 11).
Attention
Risk of damage to the unit from condensate flowback.
Do not exceed the maximum permitted lengths of the flue gas pipe!
■ Condensation may form in horizontal flue gas ducts > 4 m long or in ducts
through cool rooms:
– Insulate the pipes using temperature-resistant, non-flammable material.
– Insert a condensate cap.
■ Install horizontal flue gas ducts with at least 3° inclination (50 mm/m) towards
the unit so that condensate can flow to the air heater.
■ The surface temperature of the flue gas pipes amounts to 200°C. During
the planning process, please observe the regulations of the responsible fire
protection authorities.
■ For the flue gas path test, Hoval recommends installing an inspection T-piece
(included in the flue gas kit).
■ For all diversions, install an inspection T-piece in the flue gas pipe as well.
■ In some countries, an annual inspection and emission measured by the
responsible authorities is legally required. For this purpose, measurement
openings have been provided in the exhaust spout and the access panel.
■ In some countries (e.g. in Germany), an emission measurement from the roof
is also permissible. For this purpose, provide measurement openings in the
flue gas pipe and in the combustion air pipe directly above the roof (on-site
installation in 3-shell pipe).
Room air-dependent installation
■ The units can be installed as room air dependent (Type B
23
) or room air
independent (Type C
13
, C
33
) appliances.
■ For room air dependent operation the combustion air is taken directly from the
room in which the unit is installed. Ensure the room is sufficiently ventilated
and that the combustion air is free from pollutants and aggressive substances
(halogens such as chlorides, fluorides, etc.).
■ In case of room air dependent installation (Type B
23
), close off the combustion
air connection using a protective screen.
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TopVent ® TG | GV | MG
Operating instructions
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