|Flueing and air supply requirements are
given in BS5400 Parts 1 and 2. The information which follows
is intended only to give general guidance.
When the size of the air vent required is calculated,
if the vent area required is large, it may be more suitable
to fit a number of smaller air vents rather than one large
vent provided that the sum of the smaller vent areas is not
less than the minimum area required.
HEAT-RAD overhead radiant heating units can be installed without
a flue which discharges to atmosphere providing that the building
regulations and BS5440 Part 2 are complied with and that the
discharge of the flue products does not interfere or affect
either occupants or manufacturing processes.
If a flue is not fitted then the volume to be
heated by each HEAT-RAD heater must be as detailed below.
Also the space must have an openable window, opening direct
to outside together with a permanent air vent direct to outside
sized as detailed below.