VALLOX 280 SE
INSTRUCTIONS FOR USE
1.17. Booster / fireplace switch function
Booster switch function
• The booster switch raises the fan speed to the set maximum speed for 45 minutes.
• The function is started at the main display of the control panel by simultaneously pressing
and holding down the + and - buttons for 2 seconds.
• The function can also be started at a separate auto-reset push-button switch, wired from
the connection box of the unit to a wall in the fireplace room, for instance. Upon each
pressing, the stopping function continues for 15 minutes (the switch is not included in the
delivery).
• During the function, the fireplace/booster switch symbol ( ) is visible in the main display
of the control panel.
Fireplace switch function
• The fireplace switch stops the extract air fan for 15 minutes and produces overpressure in
the ventilation zone. This makes it easier to light the fireplace, for instance.
• The function is started at the main display of the control panel by simultaneously pressing
and holding down the + and - buttons for 2 seconds.
• The function can also be started at a separate auto-reset push-button switch, wired from
the connection box of the unit to a wall in a classroom, for instance. Upon each pressing,
the booster function continues for 45 minutes.
• During the function, the fireplace/booster switch symbol ( ) is visible in the main display
of the control panel.
• The function is selected at the control panel (see Section 2.2.1.).
NOTE!
The starting of the extract air fan may weaken draught in the fireplace.
During cold winter seasons, the flowing of cold air to the extract ducts may cause the anti-freeze and anti-
frost functions to start. If the post-heating radiator does not contain non-freezing solution, there is a
freezing risk. The situation will normalise in a while, after the functions stops.
1.18. Fault signal relay (remote monitoring)
• The fault signal relay has potential-free points (24 VDC, 1 A).
• The points provide information on various faulty states of the unit.
• When the anti-frost function of the water-circulating radiator is on, the points of the relay
close and open at a 10 seconds interval.
• Alarm of high carbon dioxide content switches the relay at 1-second intervals.
• In other fault situations, the points are closed.
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© VALLOX • We reserve the right to make changes without prior notification.
1.19. Air filtering
VALLOX 280 SE features coarse filtering of both extract and supply air before
the fans. The unit has F7 and G3 class fine and coarse filters on the supply
side, and a G3 class coarse filter on the extract side. The filters need to be
in place in the unit whenever ventilation is in operation.
A F5 extract air filter is available as an option.
G3
G3
F7
F5 (option)
