Commissioning
•
When the unit is set up and running, the minimum setting on the speed control switch must relate to the
designed volume air flow. The variable air flow from minimum to maximum allows the unit to extract a
greater volume to cope with any increase in the build up of condensation or foul air, ie cooking etc.
•
Before starting the commissioning procedure, refer to the design drawing for correct air flows.
•
. Installation of the appliance
MUST
be carried out by a qualified and suitably competent person and should
be carried out in clean, dry conditions where dust and humidity are at minimal levels. It should only be in-
stalled after other building works have been completed and the building in which it is installed cleaned. Failure
to comply with any of the above points will have an impact on the validity of the guarantee.
•
. Prior to starting the commissioning procedure, ensure that the ductwork connections and airflow directions
are as marked on the product.
•
. Before making any adjustments, ensure that the air valves or grilles are fully open.
•
. Motor speed and timer settings are adjusted on the control board, which is located behind the small panel
on the front of the cabinet. Once removed, there is access to potentiometers and jumper
switches for use during the commissioning process. (See diagram on Page 6)
WARNINg : With the control board panel removed, 230 volt live connections are accessible.
Airflow Adjustment
Depending on the configuration of the duct connections and drainage, the adjustment potentiometers on the con-
trol board marked MOT 1 and MOT 2 will correspond to the supply or extract valves. It will be necessary to iden-
tify which is which before commencing the adjustment.
Normal (trickle) Speed
Before making any adjustments, switch on the unit at trickle speed.
1. Move the speed adjust jumper switch JP5 to position A, as shown in the diagram. A green light will
appear on the circuit board.
2. With the boost switch off (bathroom light switch OFF), measure the airflow rate at the valves correspon-
ding to MOT 1 (supply or extract) and compare to the design values. If there is a difference, adjust the
potentiometer MIN-MOT 1 on the control board and re-check the airflow rates. Re-adjust the potentio-
meter until the values are approximately correct. Final adjustments can be made at the air valves.
3. Set the potentiometer MIN-MOT 2 to roughly the same position as MIN-MOT 1.
Repeat the adjustment process for the valves corresponding to MIN-MOT 2.
Boost Speed
4. Switch the unit to boost (light switch ON).
5. Measure the airflow rate at the valves corresponding to MOT 1 (supply or extract) and compare to the
design value. If there is a difference, adjust the potentiometer MAX-MOT 1 on the control board and re-
check the airflow rates. Re-adjust the potentiometer until the values are approximately correct.
Do not re-
adjust the air valves.
6. Set the potentiometer MAX-MOT 2 to roughly the same position as MAX-MOT 1 and check the airflow val-
ues at the corresponding valves. Re-adjust MAX-MOT 2 until approximately correct as per the design val-
ues.
Do not re-adjust the air valves
.
7. Return the jumper switch JP5 to position B (green light goes out).
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