VENT-AXIA ECOTRONIC SELV 12V FITTING AND WIRING INSTRUCTIONS
PLEASE READ ALL INSTRUCTIONS CAREFULLY BEFORE INSTALLATION
OPERATION
The Ecotronic humidity controller has been
designed for maximum versatility. It has a single
pole relay with two change-over contacts. The
relay is energized either by manual override, or in
automatic mode when the room Relative Humidity
(RH) reaches the set-point. The relay remains
energized until the room RH falls below the set-
point. The RH set-point is adjustable.
The integral pullcord switches between automatic
humidity control and manual override. The Ecotronic
indicator lights when the fan is in manual override.
The indicator will
NOT
light under automatic
humidity control, even if the relay is energized.
There is no permanent
OFF
position.
NOTE:
On installation it is possible that the humidity
controller will run continuously until it has
acclimatized to the environment.
SITING
IMPORTANT: The mains transformer controller
supplied with the fan must be sited out of reach
of a person using a fixed bath or shower. It
provides 12V AC Safety Extra Low Voltage
(SELV) to the Ecotronic controller, which in
turn supplies the fan with 12V AC SELV. This
means that the Ecotronic and the fan may be
installed within reach of a person using a fixed
bath or shower. However, the Ecotronic and
fan must not be placed where they could be
submerged in water or regularly exposed to
direct water spray, E.g. from a shower head
whether permanently fixed or movable.
Ambient temperature range: 0 to 40
O
C. Site away
from direct sources of heat. Do not site above a
radiator or other heat source. Do not site in an area
containing excessive levels of grease. Do not place
in direct sunlight as this may affect the sensor.
The Ecotronic should ideally be mounted away
from the fan on an inside wall between the major
moisture source and the door to the other rooms of
the building. The Ecotronic needs free air circulation
and should be sited where the pullcord can be
operated easily. Do not site closer than 100mm to
the ceiling, cupboards, etc.
FITTING
The Ecotronic is designed to fit any
non-metallic
UK single mounting box with a minimum depth of
20mm. Fixing centres 60.3mm. A surface mounting
box is available (Vent-Axia Ref. 410020). Do NOT
use a metallic mounting box.
WIRING
WARNING: The Ecotronic MUST NOT be earthed.
It is Class III SELV .
The Ecotronic MUST be connected to a 12V
50Hz AC SELV supply. It provides 12V 50Hz AC
SELV for a Vent-Axia SELV 12 range fan.
DO NOT connect more than one fan to the
Ecotronic.
The maximum load is 5.6A (Inductive
or Resistive).
Only connect together products
from the Vent-Axia SELV 12 range as they are
specially designed to work on 12V AC and are
not compatible with mains voltage.
All electrical connections should be made by
a properly qualified electrician.
The siting and
installation MUST comply with the current
I.E.E. Regulations (BS7671 UK) or the
appropriate standards in your country.
Note: Ecotronic does not need a lamp connected
in the input or output circuit. If a lamp is used please
note that for reliable operation we recommend a
tungsten filament lamp. The manufacturers of
some fluorescent and low energy lighting systems
indicate that these can interfere with some
electronic controller circuits.
Wiring to the mains transformer controller should
be via a switched spur with a 3A fuse (UK). The
installation MUST be provided with a double pole
isolator switch with a contact separation of at least
3mm. The switch should be located outside the
room if it contains a fixed bath or shower, or in
accordance with mandatory wiring and safety
regulations.