VALLOX 90 SE
Parts list for VALLOX 90 SE
CO
2
Carbon dioxide sensor
Adjustment range 500...2000 ppm (900)
Option
Carbon dioxide control
Adjustment interval 1...15 min (10)
G4, F7
Filter
Supply air G4 + F7
Standard
Extract air G4
Standard
FG
Damper motor
HR bypass automation
Standard
24 V, 2 W, 4 Nm
H
Control panel
Setting, operation, display
Standard
LP2
Post-heating radiator
Tubeheater 900 W
Option
HR
Heat recovery cell
Counter-current cell, efficiency >80 %
Standard
EF
Extract air fan (DC – direct current)
qv =92 dm
3
/s (50 Pa)
Standard
%RH
Humidity sensor
Automatic / Adjustment range 1...99%
Option
Humidity control
Adjustment interval 1...15 min. (10)
TE1
Temperature sensor
Exhaust air temperature
Standard
Heat recovery defrosting
Adjustment range –6...+15
°
C (3)
Preheating control
Adjustment range –6…+15
°
C (5)
TE2
Temperature sensor
Supply air temperature
Standard
TE3
Temperature sensor
Outdoor air temperature
Standard
TE4
Temperature sensor
Extract air temperature
Standard
SF
Supply air fan (DC – direct current)
qv =75 dm
3
/s (50 Pa)
Standard
S
Fireplace / booster switch
Functions as either a fireplace
Standard
or booster switch (fireplace switch)
LP1
Preheating radiator
Tubeheater, 1000 W
Standard
© VALLOX • We reserve the right to make changes without prior notification.
0
0.20...1.25 VDC
1
1.75...2.25 VDC
2 2.75...3.25 VDC
3 3.75...4.25 VDC
4 4.75...5.25 VDC
5 5.75...6.25 VDC
6 6.75...7.25
VDC
7
7.75...8.25 VDC
8 8.75...10.00
VDC
0 0.5...2.5 mA
1
3.5...4.5 mA
2
5.5...6.5 mA
3 7.5...8.5 mA
4 9.5...10.5 mA
5 11.5...12.5
mA
6 13.5...14.5
mA
7 15.5..16.5
mA
8 17.5...20.0
mA
Voltage and current signal values (selection in the motherboard)
Voltage values for each fan speed:
Current signal values
for each fan speed:
11
DESCRIPTION OF OPERATION VALLOX 90 SE
Control of operation
Power supply to the unit can be controlled with a contactor in the
distribution panel if needed, e.g. with a timer programme. After starting,
the unit first operates at minimum power. After that power is adjusted
based either on the measurement data from air quality sensors and/or on
manual control at the control panel.
Fan speed adjustment
Manual control
Fan speed of the ventilation unit is controlled in 8 steps at control panel H.
Week clock control
The fan power of the ventilation unit is controlled in 8 steps using the week
clock in control panel H. The week clock can be used to programme the
desired fan power option for each hour in the day.
Carbon dioxide and humidity control
The fan power of the ventilation unit is controlled in multiple steps
depending on load and based on the measurement results of the air
quality sensors (CO
2
and %RH sensors) located in the ventilation zone. The
aim is to keep carbon dioxide and/or humidity content in the zone below
the setpoint defined at the control panel H. One or more modes of control
may be used simultaneously. The dominant mode is the one demanding
boosting. Ventilation can be adjusted in a maximum of 8 steps. Fan speed
varies depending on load between the basic and maximum fan speeds.
The base and maximum fan speeds can be set at the desired level at
control panel H.
Control through voltage or current signal
The fan power of the ventilation unit is controlled in 8 steps with a voltage
signal of 0...10 VDC, or with a current signal of 0...20 mA. However,
when automatic adjustments are enabled, fan capacity cannot be raised
above the set maximum fan speed. Voltage or current signal control is used
to control base fan speed. This means that fan speed can be raised when
necessary, but not lowered, by the manual, CO
2
and %RH controls.
Supply air temperature
Supply air temperature can be controlled with either constant
temperature control or cascade control.
Supply air constant temperature control
The control centre of the unit controls the operation of post-heating unit
LP2 (option) on the basis of the measurement data given by temperature
sensor TE2, aiming at keeping supply air temperature at the temperature
value set at control panel H (+10…+30
°
C).
Supply air cascade control
The control unit directs the operation of post-heating unit LP2 on the basis
of the measurement data given by extract air sensor TE4, aiming at
keeping extract air temperature at the temperature value set at control
panel H (+10…+30 ºC).
Heat recovery bypass
Heat recovery is enabled whenever post-heating has been switched on.
Automatic heat recovery bypass is active whenever post-heating has
been switched off and outdoor temperature exceeds the setpoint (to be
set at +0...+25
°
C). In this case, the control unit directs the operation of
damper motor FG on the basis of measurement results given by outdoor
temperature sensor TE3 and extract air temperature sensor TE4. The aim
is to get as cool supply air to the ventilation zone as possible. Heat
recovery is, however, on whenever outdoor temperature is below the limit
set, or whenever outdoor air is warmer than extract air.
Heat recovery antifreeze
Active when outdoor temperature is less than 0
°
C. The control centre of
the unit controls the operation of preheating unit LP1 on the basis of the
measurement data of temperature sensors TE1 and TE3, preventing
freezing alerts and the stopping of supply air fan SF. If the capacity of
preheating unit LP1 is not sufficient, or if it has been taken out of service,
the control centre intermittently stops supply air fan SF on the basis of the
measuring data on temperature sensors TE1 and TE3, thereby preventing
the heat recovery cell from freezing.
As soon as the risk passes, the fan restarts automatically. The threshold
temperature for defrosting (-6…+15 ºC) and the difference area
(1…10 ºC) can be set at control panel H. When fan SF stops, power
supply from radiator LP1 is stopped and post-heating radiator LP2
continues heating.
Heating units LP1 and LP2
Heating units are tubeheaters and they might be burning hot.
Alarms
The symbol ( ) appearing in the main display of the control panel
reminds of the need for maintenance of the unit. The reminder interval
can be set between 1 and 15 months. The factory setting is 4 months. This
function is always active. The fault signal relay gives potential-free alarm
indications on the following fault conditions:
• Alarm of high carbon dioxide content (> 5000 ppm) switches the relay
at 1-second intervals. The fans stop. This is reset by switching off the unit.
• In other fault situations, such as sensor faults, the contacts of the relay
close.
Booster or fireplace switch function
The booster or fireplace switch function of the ventilation unit is controlled
either at control panel H and/or separate switch S, which can be
connected to the connection box of the unit. The mode of operation of the
switch is selected at control panel H. The booster switch function raises
fan speed to the set maximum fan speed for 45 minutes. The fireplace
switch stops the extract air fan for 15 minutes and produces overpressure
in the ventilation zone.
LON remote monitoring control can be implemented with a VALLOX LON
converter.
Code
Name
Technical data
Standard /
(factory settings in parentheses)
Option