3
Depending on the way your MEV unit has been installed, the specific operation of your fan may vary. The unit
has three speeds available, but may not have been wired to use them all. Options are –
1)
Trickle Speed:
Operating on a continual basis.
2)
Medium Speed:
Activated manually using our GS1 switch or similar.
3)
Boost Speed:
Activated manually using our GS1 / GS2 switch or similar.
Note; Not all three speeds may be operational. Medium speed may be disconnected (when using a GS2 switch
or similar).
Note; Other manufacturers switches may show different markings.
To maintain good indoor air quality within the dwelling it is important that the ventilation system remains in
operation at all times unless powered down periodically for maintenance/repair.
Depending on when your home was built, background window trickle ventilators may be provided in dry habitable
rooms. Trickle vents should not be installed in the same rooms as the mechanical extract valves, as overall
ventilation effectiveness can be reduced.
Warning:
This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have
been given supervision or instruction concerning use of the appliance in safe way and understand the
hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not
be made by children without supervision.
Where an open-flued oil or gas-fuelled appliance is installed, precautions must be taken to avoid a
back-flow of gases into the room.
If the supply cord is damaged, it must be replaced by a special cord/assembly available
from the manufacturer or its service agent. The replacement must be carried out by a
qualified Electrician in accordance with IEE or local regulations.
SMART Technology - CMEV.4eHT Only
To maintain a healthy indoor environment the CMEV.4eHT includes SMART technology for Over-run Timer
(Greenwood TimerSMART
TM
) and Humidity (Greenwood HumidiSMART
TM
).
Greenwood TimerSMART
TM
monitors the length of time that there is an occupancy presence within a wet-room
and provides a fixed over-run time period to best match the length of time that the ‘switch live’ is active (as
shown below):
Greenwood HumidiSMART
TM
monitors the ambient humidity within the wet-room environment and looks for
short peaks of humidity made by either showering or bathing. This SMART technology ensures that your
CMEV.4eHT is not on boost for prolonged periods of time due to the higher ambient humidity levels caused
during the hot summer months.
To disassemble the unit, disconnect from mains supply and use a screwdriver to segregate the
electronic components and motor from the plastic housing. Dispose items in accordance with WEEE.
2.1.1
2.1.2
2.1.3
2.1.4
2.1.5
2.1.6
2.1.7
2.1.8
2.0
General Overview
Time ‘Switch Live’ is Active
Over-run Boost Period
0 – 5 minutes
No over-run
5 – 10 minutes
5 minutes
10 – 15 minutes
10 minutes
15+ minutes
15 minutes
II
I
II
I
GS2 switch markings -
Trickle (I) & Boost (II)
Operation
GS1 switch markings -
Trickle (Centre), Medium (I)
& Boost (II) Operation
Summary of Contents for Centair CMEV.4
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