Vent-Axia HR25H Installation And Wiring Instructions page 10

BLK
CON 7
RED
CON 5
WT
PIR Sensor
Control Cover
Delayed Action
Purple
White
WT
Fig. 32
Direct Action
Purple
White
WT
Fig. 33
10
BLK
RED
SPEEDS
Switch (A)
Fig. 30
CON 5
BLK
RED
WT
CON 5
BLK
WT
RED
Fig. 31
CON 7
SPEED
CON 5
Fig. 34
3.0 Installation
Installing the HR25P (cont)
3.5
If any movement is detected after the first 2
minutes, the unit will switch to its higher setting.
This mode has a reset which operates after 5
minutes.
17. Both modes have a timer setting which
determines the length of time the unit runs for
after the last movement detection. This time can
be adjusted using switch (A) between 2 - 27
minutes (Fig. 30).
To increase the time;
turn switch (A) clockwise.
To decrease the time;
turn switch (A) anti-clockwise.
18. Hold the control cover adjacent to the unit
(Fig. 31) and reconnect the plugs to the control
board as follows:
a) Push the red/black connector on to the pins
marked CON 7 (Fig. 34). Ensure that the wires
correspond with the colours marked on the
board. The unit will not operate if connected in
any other way.
b) The purple/white connector determines the unit
mode and should be placed on to CON 5 as
follows:
Delayed Action - Middle and Top pin (Fig. 32)
Direct Action - Bottom and middle pin (Fig. 33)
Note: In either mode the white wire should be on
the lower pin.
The unit will not operate if the connector is fitted
upside down.
19. Replace the control cover with the two
securing screws ensuring that no wires are
trapped.
20. Reassemble the remainder of the unit in
reverse order ensuring the divider board seals
against the heat exchanger.
21. 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.