Vent-Axia HR25 Solo Installation And Wiring Instructions - page 7
3.0 Installation
7
372268 -
3.3
Installing the
HR25
1. Remove the unit, bezel and fixing pack from
the carton.
2. Unclip the removable grille from the unit and
remove filter (Fig. 10).
3. Loosen the two securing screws and remove
the grille surround (Fig. 11).
4. Remove the divider board (Fig. 11).
5. Measure the total wall thickness. The outer of
the two rubber seals is adjustable and should
be set in a position that is 25mm in from the
outer face of the external wall (Fig. 12).
6. Secure the rubber seal to the unit using the
adhesive provided.
7. Locate the unit in the mounting hole, but do
not push it fully in.
8. Route the low voltage cable from the power
supply enclosure to the unit.
9. Pass the low voltage cable through the cable
entry grommet at the top of the unit
(Fig. 14).
10. Secure the unit to the wall using the four
fixing screws provided.
11. Remove the control cover by undoing the
two retaining screws (Fig. 14).
12. Strip the low voltage cable sheath back
40mm from the end and separate the three
individual wires.
13. Connect the wires to the terminal block.
Connect red to red, white to white and black to
black (Fig. 13 & 14).
14. Ensure that the low voltage cable is routed
through the divider slot (Fig. 14).
15. Reassemble in reverse order ensuring the
divider board seals against the heat exchanger.
16. A bezel is provided to neaten the
appearance of the outside wall around the unit.
If required this should be fixed in place using a
suitable silicone/mastic sealant.
Fig. 10
Fig. 11
Fig. 14
Fig. 13
Filter
Removable Grille
Divider Board
Heat
Exchanger
Grille Surround
Securing Screws
Pull Switch
Motor Wires
Control Cover
External Bezel
Control Cover
Cable Entry Grommet
Divider Slot
Low Voltage
Terminal Block
Wiring
Label
White
Red
Red
Motor
Switch
From Power
Supply Enclosure
Black
White
Red
Black
Fig. 12
Outside
Wall
Rubber
Seal
25mm