4
USING THE UNIT
FIREPLACE SWITCH
A switch with timer functions can be connected to the unit. The switch stops the
extract air fan when the fireplace is being used. NOTE! Starting up the extract
air fan can reduce the draw of the fireplace! In winter, this can disturb the winter
mode of the ventilation unit. The situation will return to normal soon after the
fireplace mode is turned off.
ADJUSTING THE SUPPLY AND EXTRACT AIR
RATIO
This function might be needed when the air flows are adjusted at the valves
during installation. The user does not need to adjust this function once
the valves have been adjusted, and indeed should not adjust it at all. A
potentiometer can be used to reduce the supply or extract air flow as required.
When the potentiometer is set roughly in the centre position, neither the supply
nor the extract air flow has been reduced. When the potentiometer is turned
anti-clockwise, the supply air flow is reduced, and when the potentiometer is
turned clockwise, the extract air flow is reduced.
The potentiometer for adjusting
the supply and extract air flows
Concealed installation
of the fireplace switch (optional)
MAINTENANCE REMINDER
If a signal light is connected to the connectors of the unit’s error relay, the unit will send a reminder of service need every
six months,. If connected, the signal light will flash every second. Sounds made by the relay can then be heard from
inside the unit. The maintenance reminder will be set off automatically when the door of the ventilation unit is opened or
the power is turned off.
The maintenance reminder can also be set off manually.
Vallox Simple Control panel, and Vallox X-Line
PTXP MC and PTXPA MC control hoods, VAK
0-10 VDC:
• The low speed is turned on, then higher-lower-higher
- Low speed under 4 V
- High speed over 6 V
- The selected speed will always be turned on
for 1-5 seconds
Vallox Delico PTD EC control hood:
• The damper is closed, then open-closed-open
• Press at a 1-5 second interval.
The service reminder will only be set off if it has been activated. Refer to the maintenance instructions for the necessary
maintenance measures.