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WATER CIRCULATED POST-HEATING
UNIT (OPTIONAL)
ELECTRIC POST-HEATING UNIT
(OPTIONAL))
PREHEATER (OPTIONAL)
PRESSURE DIFFERENCE
SWITCH (OPTIONAL)
Power supply
Protection class
Fans
Supply air
2x230 W 1 A
Extract air
2x230 W 1 A
Heat recovery
Heat recovery bypass
Preheater
Electric post-heating unit
Water circulated post-heating unit
Supply air
Filters
Supply air
Filters
Disccharge air
Disccharge air
Basic unit
Weight
Ventilation adjustment options
Options
SILENCER (OPTIONAL)
230 V, 50 Hz (400 V) 13.9 A
(+ preheater 10.9 A)
IP 34
3
210 dm
/s 100 Pa
3
230 dm
/s 100 Pa
2 heat recovery cells,
>70 %
η
Summer/winter automation
2.5kW 11 A
2.5kW 11 A
ca. 5kW
EU3
EU7
EU3
EU5
210 kg
– Manual control (DIGIT control panel)
– CO
and %RH control
2
– Remote monitoring control (LON)
– Remote monitoring control
(voltage / current signal)
– Silencer
– Preheater unit
– Electric post-heating unit
– Water circulated post-heating unit
– CO
sensor
2
– %RH sensor
– Pressure difference switch
– LON converter
VALLOX Product Code:
VALLOX 252 D
DIGIT
CONTROL PANEL
CO
SENSOR
2
(OPTIONAL)
LON CONVERTER
(OPTIONAL)
%RH SENSOR (OPTIONAL)
3158400 L
3158410 R
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Summary of Contents for Vallox 252 D
- Page 1 VALLOX Product Code: 3158400 L VALLOX 252 D 3158410 R SILENCER (OPTIONAL) WATER CIRCULATED POST-HEATING UNIT (OPTIONAL) ELECTRIC POST-HEATING UNIT (OPTIONAL)) PREHEATER (OPTIONAL) PRESSURE DIFFERENCE SWITCH (OPTIONAL) Power supply 230 V, 50 Hz (400 V) 13.9 A (+ preheater 10.9 A)
-
Page 2: Main Parts
Ø 250 4 pcs Without preheating, defrosting starts when outdoor air temperature falls below ca. -5˚C. VALLOX 252 D can be controlled with the control panel coming with the unit (3 at most) and with optional CO (5 at most) and %Rh sensors (2 at most). -
Page 3: Ventilation Control
Ventilation control with carbon dioxide sensor (option) • In carbon dioxide control, VALLOX 252 D adjusts fan speed so as to keep the carbon dioxide content in the ventilation zone below the setpoint. If two or more sensors are used, fan speed is adjusted in accordance with the highest measuring result. - Page 4 LON converter Ventilation control with remote monitoring system • With the help of an optional LON converter, VALLOX 252 D can be connected to a remote monitoring system. • Before connecting VALLOX 252 D to the remote monitoring system, make sure that they are compatible.
- Page 5 VALLOX 252 D INSTRUCTIONS FOR USE Service reminder • The maintenance reminder switches on the maintenance reminder symbol ( ) in the control panel at defined intervals, the factory setting being 4 months. • The maintenance reminder symbol is acknowledged at the main display of the control panel (see the instructions for using the control panel, Section 1.3.7.).
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Page 6: Control Panel
VALLOX 252 D INSTRUCTIONS FOR USING THE CONTROL PANEL Control panel Start button 1.1. Keyboard Scrolling up With this button, you switch the unit on and off. When With this button, you can scroll the displays the indicator is lit, the unit is on. -
Page 7: Settings Menu
VALLOX 252 D INSTRUCTIONS FOR USING THE CONTROL PANEL 1.3. Settings menu You can reach the settings menu from the operating menu as indicated in Section 1.2.2. The displays of the settings menu (Sections 1.3.1.–1.3.23.) can be scrolled with the scrolling buttons. - Page 8 VALLOX 252 D INSTRUCTIONS FOR USING THE CONTROL PANEL 1.3.11. Adjusting the DC fan of the supply air side The desired adjustment value for the DC fan is selected with the + and - buttons. The DC fan supply rotation speed of the supply air fan can be lowered by decreasing the percentage value.
- Page 9 See Section 1.3.3, Mode of operation of the maximum speed setting. 1.4. Factory settings VALLOX DIGIT SE has the following factory settings: Basic fan speed Maximum fan speed Carbon dioxide adjustment (CO...
- Page 10 You can increase the setpoint of the pressure difference switch as follows: Disconnect VALLOX 252 D from the network by switching off power supply on the distribution panel, for instance. • Remove the doors of the unit (upper door first).
-
Page 11: Troubleshooting
VALLOX 252 D TROUBLESHOOTING SYMPTOM CAUSE DO THIS • Air cools down in the attic ducts. • Check the insulation of the attic ducts. Outdoor air is cool when entering the house. • The heat recovery cell has frozen, • If the heat recovery cell has frozen, check the defrosting protection and extract air cannot heat outdoor setpoint. -
Page 12: Maintenance Instructions
- if there is one - and detach it for emptying and cleaning. • If a condensing water outlet is in use, check it and ensure that it is not clogged. Vallox Oy FIN-32200 Loimaa Phone +358 2 7636 300 Fax +358 2 7631 539 Internet: www.vallox.com...
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