Installation - Vent-Axia HR25H Installation And Wiring Instructions

3.0 Installation

3.1 Initial Preparation
The unit is designed for installation in a 152mm
(6") core drilled hole.
All installation can be undertaken from inside
Outside Inside
the building except for fixing of the external
bezel if required.
1°
1. After considering the site requirements (see
previous section), select a suitable position for
the unit and power supply enclosure (5m
maximum between unit and power supply).
2. Remove the unit fixing template from the rear
of the instructions.
Fig. 4
3. Mark the position of the four fixing holes and
the mounting hole.
4. Cut the mounting hole to a diameter of
152mm (6") using a core drill. Ensure that there
is a slight fall on the hole, from inside to outside
(Fig. 4).
5. Drill and plug the four fixing holes.
Install the fixed cable runs using mini-trunking
or via concealed installation. A 3-core red, white
and black low voltage cable is supplied for
connections between the unit and the power
supply.
6. Using the template supplied mark the
position of the four fixing holes for the power
supply enclosure. Drill and plug the holes.
7. Ensure the cable to the unit extends
sufficiently from the mounting hole to enable
the required connections within the control
enclosure.
5