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Condensate Drainage
The unit may sometimes produce condensation which must be drained away. A 15mm dia pipe connection is pro-
vided on this unit.
1. A 15mm rigid PVC push-fit pipe must be used for connection to the unit.
2. IMpORTAnT
:
A solvent weld must nOT be used on this joint as the joint has to be disconnected in order
to remove the heat exchanger for cleaning.
3. The condensate drain pipe must incorporate a ‘U’ bend or other trap in order to prevent air penetration into
the unit.
4. The drainage pipe must have a continuous fall from the unit to the drainage collection point.
5. If any part of the condensate drain is in an unheated space it MUST be insulated with the equivalent of at least
25mm of insulating material with a thermal conductivity of 0.04 W/mK.
note:
1. In order to prevent any possible condensate overspill from the unit, excess water in the condensate tray will
be detected and the motors will switch off to prevent further condensation from forming. If this happens, a
warning light on the unit will flash.
2. The cause of this will usually be inadequate drainage. The drain must be inspected and cleared of any block-
age and the correct rate of fall from the unit must be ensured.
3. Once the drainage problem has been resolved, the unit can be re-set by switching off and on again.
Electrical Connection
WARnIng: these appliances must be earthed and all wiring must conform to current IEE Regulations and all ap-
plicable standards and Building Regulations.
• The unit is suitable for 230V, 50Hz Single phase supply.
• The unit is supplied with
:
-
A mains rated 4 core flexible cord (black, brown, grey and green/yellow) and 2 core 0-10v cables for purge
switching,
or
an external connector box.
Cables for any other external device will be
provided and labelled on request
• A triple pole isolation switch with contact separation of at least 3mm must be used to connect the appliance to the
fixed wiring when using the Switched Live.
• Boost controls must not be located within 1 metre of a cooker or where they may be affected by excessive heat or
moisture.
• Boost and other external controls should be clearly identified and conveniently located.
•
The boost facility can be activated by a switched live connection (in addition to the permanent supply live). The switched
live can be operated by a variety of external devices, including:
- PIRFF (passive infra red)
*
- DRH240 (dynamic remote humidistat)
*
- THM (thermostat)
*
- a light switch (if more than one light switch is used,
each one must be a double pole switch)
- a remote switch/pull cord
or via LCD control
(
*
PIRFF, DRH240 and THM may have integral over-run timer which controls the length of time that the fan will
continue to operate at its boost speed after the boost has been switched off.)
