Vent-Axia HR25 Solo LH Installation And User Instruction Manual page 8

Outer cover
Sensor
Release clips
SPEEDS
BLK
RED
CON 4
Switch (A)
Fig.14
© Copyright abc 2006
Connection cable
PCB
Heat exchanger
Outside wall
Position jumpers
for low/high speed setting
Terminal Block
Outer
cover
BLK
WT
RED
External bezel
25mm
Rubber
seal
Fig.13
Cable entry
Sensor
grommet
Fig.15
8
3.0 Installation
3.4 Installing the HR25H Solo
1. Remove the bezel and fixing pack from
the carton.
2. 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. 13).
4. Secure the rubber seal to the unit using the
adhesive provided.
5. Locate the unit in the mounting hole, but do
not push it fully in.
6. Route the low voltage cable from the power
supply enclosure to the unit.
7. Pass the low voltage cable through the cable
entry grommet at the top of the unit (Fig. 15).
8. Secure the unit to the wall using the four
fixing screws provided.
9. Strip the low voltage cable sheath back
40mm from the end and separate the three
individual wires striped by 6mm.
10. Connect the wires to the terminal block.
Connect red to red, white to white and black to
black (Fig. 14).
11. The HR25H Solo unit is factory set to
switch between low and high speed.
Low / High speed (continuously running)
12. The switching point of the unit can be
adjusted between 60% - 90% humidity. It is
factory set to operate at 70% humidity at 25°C.
13. To adjust the humidity level, rotate switch
(A) as follows (Fig. 14) :-
a) For the unit to operate at a lower humidity
level, turn switch (A) anti-clockwise (Min. 60%).
b) For the unit to operate at a higher humidity
level, turn switch (A) clockwise (Max. 90%).
14. Reassemble in reverse order ensuring the
humidity sensor cable is plugged into CON 4.
15. 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.