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Installation and Wiring Instructions for the
SDX EC IN-LINE CENTRIFUGAL DUCT FAN range.
IMPORTANT: READ THESE INSTRUCTIONS BEFORE COMMENCING THE
INSTALLATION.
DO NOT install this product in areas where the following may be present or occur:
• Excessive oil or a grease laden atmosphere.
• Unit shall be operated indoors only.
• Corrosive or flammable gases, liquids or vapours.
• Ambient temperatures higher than 40°C or less than –40°C.
• Possible obstructions which would hinder the access or removal of the Fan.
• Sudden ductwork bends or transformations close to the Fan
SAFETY AND GUIDANCE NOTES
A. All wiring to be in accordance with the current I.E.T. Regulations, or the appropriate standards of your
country and MUST be installed by a suitably qualified person.
B. The Fan should be provided with a local double pole isolator switch having a contact separation of at
least 3mm.
C. Ensure that the mains supply (Voltage, Frequency, and Phase) complies with the rating label.
D. The Fan should only be used in conjunction with the appropriate Vent-Axia products.
E. It is recommended that the connection to the fan connecter terminals is made with flexible cable.
F. When the Fan is used to remove air from a room containing a fuel-burning appliance, precautions
must be taken to avoid back-flow of gases into the room from the open flue of gas or other appliance.
Ensure that the air replacement is adequate for both the fan and the fuel-burning appliance.
G. The Fan should not be used where it is liable to be subject to direct water spray for prolonged periods
of time.
H. Where ducted Fans are used to handle moisture-laden air, a condensation trap should be fitted.
Horizontal ducts should be arranged to slope slightly downwards away from the Fan.
I. This appliance is not intended for use by persons (including children) with reduced physical, sensory
or mental capabilities, or lack of experience and knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a person responsible for their safety.
J. Young children should be supervised to ensure that they do not play with the appliance.
K. Note:- This is a class 1 appliance and MUST be earthed.
INSTALLATION.
The unit is designed as an internal in-line duct fan to be positioned between lengths of ducting.
Short duct runs terminating close to the fan (i.e. within 1.5m) must incorporate suitable guards unless the
fan is mounted higher than 2.1m above the floor.
If flexible ducting is used it should be fully extended to obtain the best results.
Position the fan at the highest point on the system with both ducting runs sloping downwards from this
point.
In circumstances where an excessive amount of moisture is present in the air then a condensation trap
should be installed.
When siting the appliance ensure that there is sufficient space to allow access for any servicing and
maintenance.
When connecting the ducts please observe the air flow direction indicated on the housing of the device.
It is recommended to use air filters that reduce the amount of dirt accumulating on the fan's impeller.
The accumulated dirt affects the balance of the impeller which may cause vibration. This may be the
reason for the improper operation of the fan motor.
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