GENERAL INFORMATION
GREENSTAR HEATSLAVE 12/18 - 18/25 - 25/32
8 716 106 253c (11.07)
6
GENERAL INFORMATION
Conventional flue appliances require an
adequate supply of fresh air which must be
delivered to the boiler for combustion purposes
through a permanent inlet, such as an air brick,
into the area where the boiler is situated.
If a cupboard or compartment which is to be
used for storage or airing is built around the
appliance after installation there must be a
non-combustible partition around the boiler.
Further information can be found in BS 5410
which also describes venting requirements.
Venting compartments:
Ventilation must be provided for boilers fitted
into compartments as described in BS 5410
A minimum of 2 air vents must be fitted, one
at low level and another at high level onto
the same wall using the same air for
circulation.
Combustion air must not be taken from a
room or internal space containing a bath or
shower and must not communicate with a
protected area such as a hall, stairway,
landing, corridor, lobby, shaft etc.
Air vents must allow access for clean free air
and must be sited to comply with the flue
terminal position requirements.
Air ducting runs must not exceed 3m.
Low level air vents must be less than
450mm from the floor.
A warning label must be added to the vents
with a statement to the effect: ''Do not block
this vent. Do not use for storage''.
Conventional flued appliances:
Minimum area of of air inlet for combustion:
kW Area (cm
2
)
12/18
99
18/25 138
25/32 176
MINIMUM AIR VENT AREA (cm
2
) FOR
APPLIANCES INSTALLED IN A COMPARTMENT:
1Internal air to and from a space/room inside the building.
2External air to and from directly outside the building.
Conventional flue:
Room Sealed flue:
kW
12/18
18/25
25/32
kW
12/18
18/25
25/32
Internal
1
ventilation
External
2
ventilation
High
Level
Low
Level
High
Level
Low
Level
Internal
1
ventilation
External
2
ventilation
High
Level
Low
Level
High
Level
Low
Level
198
279
99
198
275
413
138
275
352
528
176
352
198
198
99
99
275
275
138
138
352
352
176
176
IN
TRODUC
TION