andrews MAXXflo EVO CWH 90/302, Руководство по установке и обслуживанию

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Installation 27 MAXXflo EVO
4.7.3 GENERAL VENTILATION REQuIREMENTS (TyPE b
23
CLASSIFICATION)
DANGER
Flue type B
23
- Is an open flue appliance where air is drawn from the room or compartment in
which the heater is installed and therefore the room or compartment must be ventilated to out -
side air. Only in exceptional circumstances can ventilation air be taken from inside (see IGEM/
UP/10 section 7 for details)
Adequate ventilation shall be provided to permit the safe operation of any appliance installed
within the room or space, including other fuel-fired appliances which may be affected by the
installation of this gas appliance. If the installation of this appliance takes the total net kW input
in the room or space beyond 70kW, reference to BS6644 should be made.
Consideration shall be given to the purpose of the internal space from which ventilation is
provided. The internal space should not be part of a dwelling
The ventilation system (including mechanical ventilation) shall be designed such as not to cause
the installation space to be under suction to the extent that downdraft in the chimney system
could lead to a reverse flow of combustion products into the room or appliance.
The temperature within a room, enclosure or balanced compartment, assuming ambient
air conditions of 15
O
C shall not exceed the following temperatures:
Installations in a plant room with ventilation direct to outside air require the following minimum free area of
permanently open vents at both low and high levels:
High level (100mm below ceiling level) 40
O
C
Mid level (1500mm from floor level) 32
O
C
Low level (100mm above floor level) 25
O
C
4.7.4 OPEN FLuE APPLIANCE IN A DEDICATED PLANT ROOM
Heater Model Minimum vent free area
(Low)
Minimum vent free area
(High)
MAXXflo EVO 90 505 cm
2
340 cm
2
MAXXflo EVO 120 675 cm
2
450 cm
2