
Installation and Operating Manual
Page 6
INSTALLATION INSTRUCTIONS (cont.)
To optimise the efficiency of the cabinet the
damper situated on top of the unit should be
adjusted to a setting that corresponds with
the pressure drop in the ducting. The
maximum permissible pressure drop is 70pa.
If the pressure drop is greater than this, an
external fan must be installed. The dryer
has electrical terminals inside the control
console suitable for connecting an external
fan. The fan would then operate only when
the cabinet is in use.
If several cabinets are installed adjacent to
each other it is advisable to fit a separate
ducting system to each unit. If a single
ducting pipe is to be considered for a multi
unit installation, it would be advisable to seek
professional advise from a specialist heating
and ventilation engineer.
EXHAUST CONNECTION
The exhaust ducting should not be connected
into an existing chimney, boiler flue or tumble
dryer system.
The dryer must be connected directly to an
exhaust ducting system that terminates on the
outside of the building. This could be through
the roof or on an external wall. The outlet
spigot on top of the cabinet is 125mm
diameter. The effective length of the ducting
‘A’ is 23m of straight pipe. If the diameter of
the pipework is increased to 160mm, the
effective length is 70m. The effective length of
the system will vary depending on the type of
ducting material and the number of bends
used. The cabinet operates more efficiently
with the minimum length of ducting and the
unit should be positioned on an external wall if
possible.
Notes:
Rigid metal or plastic pipe is preferred
although flexible ducting can be used for
some installations within close proximity to
an outside wall.
Wall vented systems, including fixed
window pane applications, should
terminate with an open louvre grille.
Roof vented systems should be fitted with
a weather cowl or a downward facing
bend.
Standard tumble dryer back draught
shutters should not be used.
Ensure that the ducting and terminal
fittings are cleaned on an annual basis.
ROOM VENTILATION
The cabinet has an exhaust airflow of up to
250 cubic metres per hour. This air has to be
sourced initially from within the room where the
dryer is installed. It is important to ensure that
there is a continuous supply of fresh air into
the room. The air intake into the cabinet is via
the door surrounds - sealing gaskets are not
fitted for this reason. The recommended free
area of the air intake into the room must not be
less than 142cm2. The resistance caused by
grilles or shutters must not exceed:
10 Pa (0.1 mbar).
Commissioning the ducting system