BENSON variante 2 series, Инструкция пользователя

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250 mm.
The table below provides specific data for
each heater model as -
2.4.2.3 Natural Ventilation Openings to
Enclosures for Room Sealed Heaters
For enclosure applications the minimum free
area of ventilation opening will also depend
upon whether the heater(s) is installed in
room sealed mode (ie with a positive
connection to atmosphere of both flue and
combustion air)
Or with flue only (ie without the positive
connection to atmosphere of a combustion
air duct)
Where the heater(s) is installed in a plant
room and in room sealed mode (ie with a
positive connection to atmosphere of both
flue and combustion air ) the minimum free
area of ventilation opening needs to be

At high level 5 cm
2
for each kW of
rated heat input

At low level 5 cm
2
for each kW of rated
heat input
The high level ventilation opening should be
sited on an external wall and positioned as
high as is practical and always within the top
15% of the wall height
The low level natural ventilation opening
should be situated on an external wall and be
within 1000 mm of floor level for natural gas
and ideally at floor level for l.p.g gas
installations but in any event no higher than
250 mm.
The table below provides specific data for
each heater model as -
2.4.2.4 Natural Ventilation Openings to
Enclosures for Flued Heaters
Where the heater(s) is in an enclosure and in
flue only mode (ie without a positive
connection to atmosphere of combustion air
ductwork ) the minimum free area of
ventilation opening needs to be

At high level 5 cm
2
for each kW of
rated heat input

At low level 10 cm
2
for each kW of
rated heat input
The high level ventilation opening should be
sited on an external wall and positioned as
high as is practical and always within the top
15% of the wall height
The low level natural ventilation opening
should be situated on an external wall and be
within 1000 mm of floor level for natural gas
and ideally at floor level for l.p.g gas
installations but in any event no higher than
250 mm.
The table below provides specific data for
each heater model as -
2.4.2.5 Mechanical Ventilation to a
Plant Room or Enclosure
In the event that the installer prefers to
mechanically ventilate the plant room or
enclosure rather than provide ventilation
openings then -

The plant room or enclosure needs to
be mechanically ventilated at the rate
of 4.14 m
3
/h of fresh air per kW or
rated heat input.

It is a requirement that the mechanical
Mechanical Ventilation
Rate for Plant Room or
Enclosure
M
3/
h
250 327
330 436
410 543
490 652
MODEL