Vallox 280 L, 280 R Technical Specifications

• 1.09.357E

• 22.01.07 © VALLOX

Code 3487

DIGIT SED

ELECTRONIC CONTROLLER WITH LCD DISPLAY

• For dwelling- and room-specific ventilation

• Good heat recovery efficiency

• Supply and extract air ventilation with heat recovery

• Electronic control panel with LCD display

• Week clock control as a standard feature

• Humidity control (option)

• Carbon dioxide control (option)

• Maintenance reminder

• Fireplace / booster switch function

• Good filtering

• Summer / winter automation

• Fixed air flow measuring outlets

Models:

VALLOX 280 L VALLOX 280 R

TECHNICAL SPECIFICATION

Input power

Class of protection Direct current fans

Heat recovery Heat recovery bypass Electric preheating radiator Electric post-heating radiator Water post-heating radiator Filters

Weight Ventilation adjustment options

Options

Extract air Supply air

Supply air Extract air

520 W 3.2 A 520 W 3.2 A

230 V, 50 Hz, 400 V, 15.0 A (+ preheating unit 11 A) IP 34

3

/s 100 Pa

290 dm

3

/s 100 Pa

240 dm

2 HR cells, Summer / winter automation

2.5 kW, 11 A

2.5 kW, 11 A ca. 5 kW G3 and F7 G3 206 kg

– control via control panel

–CO – remote monitoring control

– remote monitoring control

– silencer – electric preheating radiator – electric post-heating radiator – water post-heating radiator –CO – %RH sensor – pressure difference switch – LON converter – extract air filter F5

= 70%

(DIGIT SED)

and %RH control

2

(LON converter)

(voltage / current signal)

sensor

2

VALLOX 280

DIMENSIONS AND MAIN PARTS

1100

VALLOX 280 model L in the picture

12

1370

187

220

665

220

10 9 8 7 6 5 4 3 2 1

A

222

282

222

B

C

187

D

7

1

13

5

4

14

3

8

Main parts

1

Supply air fan

2

Extract air fan

3

Heat recovery cells

4

Heat recovery bypass

5

Suppy air filter F7

6

Extract air filter G3

10

6 19 15

2

7

Outdoor air filter G3

8

Condensing water tank

9

Condensing water outlet

10

Electrical connection lead-ins

11

Control panel

12

Measurement outlets

Duct outlets Inner diameter of collar ø 250 mm

VALLOX 280 L

A

Outdoor air to the unit

B

Supply air to the dwelling

Extract air from

C

the dwelling Exhaust air outside

D

VALLOX 280 R

A

Exhaust air outside

Extract air

B

from the dwelling Supply air

C

to the dwelling

D

Outdoor air to the unit

Pipe connections

VALLOX 280 L VALLOX 280 R

7

Water going to the radiator

Water coming

6

from the radiator

5

Water going to the radiator

4

Water coming from the radiator

Electrical connections

VALLOX 280 L VALLOX 280 R

Feed cable

1

- distribution panel

2

Connection cable

- control panel sensor

- CO

2

- LON controller

3

Connection cable

- humidity sensor

- remote monitoring

control

Feed cable

8

- distribution panel

9

Connection cable

- control panel sensor

- CO

2

- LON controller

10

Connection cable

- humidity sensor

- remote monitoring

11

Silencer

Mounted on top of the unit

16

2370

665

1000

1370

Options

13

Post-heating radiator

17

220

9

18

187

222

• Electric or water

Preheating radiator

14

• Electric

Pressure difference switch

15

16

Carbon dioxide sensor

17

Humidity sensor

18

LON converter

19

Extract air filter F5

1100

282

222

187

Ø 250 4 PCS

2

VALLOX 280

PERFORMANCE / VALLOX 280

Air volumes

SUPPLY / EXTRACT AIR VOLUMES - VALLOX 280

SUPPLY G3 + F7, EXTRACT G3

Pa

tot

p

Pressure loss in ducts. Total pressure

P

,kW/(m3/s), 2.0

esU

20

40 60 80 100 120 140 160 180 200 220 240 260 280 300 320

Volume flow rate

Sound values / VALLOX 280, supply G3 + F7, extract G3

Sound power level from the ventilation unit to

extract air ducts by octave band Lw, dB

ADJUSTMENT POSITION / AIR FLOW

75

73

60

47

43

40

30 19

77 59

82

77

65

51

47

45

35 25

83 63

Medium

frequency

of the octave

band, Hz

L

WA

pA

Sound power level from the ventilation unit

to supply air ducts by octave band L

ADJUSTMENT POSITION / AIR FLOW

2

128 l/s4164 l/s6202 l/s8238 l/s2171 l/s4210 l/s6242 l/s8261 l/s

Hz

78

63

125

250

500

1000

2000

4000

8000

L

, dB

W

, dB(A)

63

60

46

43

39

29 17

78 56 61

A-weighted sound pressure level dB (A) coming from the unit through the envelope to the rooms where the

ADJUSTMENT POSITION / AIR FLOWS (supply / extract)

2

119/171 l/s4149/209 l/s6177/239 l/s8208/260 l/s

45 50 53 55

82

69

66

50

47

43

34 24

82

unit has been installed

, dB

w

84

73

70

54

49

48

38 28

84 64

86

76

74

57

51

42 31

87 68

VALLOX 280 L

air

Extract

air

Supply

S

HR

E

Measuring points after the outlet collar. Fan curves indicate the total pressure

available for duct losses.

qv(dm3/s)

VALLOX 280, supply G3 + F7, extract G3

Fan speeds

1

84

81

69

55

50

49

39 29

86 67

85

86

72

57

51

52

41 32

89 71

2 3 4 5 6 7 8

Air flow (l/s)

130 150 170 190 210 230 250 290

Fan input

power

W

150 180 250 320 405 510 620 830

LpA = A-weighted sound pressure level (10 m2 sound absorption)

3

VALLOX 280

PERFORMANCE / VALLOX 280 + SILENCER

VALLOX 280 L SILENCER

air

Extract

air

Supply

S

HR

E

Measuring points after the outlet collar. Fan curves indicate the total pressure

available for duct losses.

VALLOX 280 + silencer, supply G3 + F7, extract G3

Air volumes

Supply / extract air volumes - VALLOX 280 + silencer

SUPPLY G3 + F7, EXTRACT G3

350

Pa

300

tot

p

250

200

150

100

50

Pressure loss in ducts. Total pressure

S8

P

,kW/(m3/s), 2.5

esU

P

,kW/(m3/s), 2.0

esU

S4

S3

S2

S1

20

40 60 80 100 120 140 160 180 200 220 240 260 280 300 320

E4

E3

S5

E2

E1

E6

S7

E5

S6

E8

E7

Volume flow rate

RECOMMENDED

OPERATING RANGE

qv(dm3/s)

Sound values / VALLOX 280 + silencer, supply G3 + F7, extract G3

Fan speeds Fan

1 2 3 4 5 6 7 8

Air

flow

(l/s)

90 110 130 150 170 190 210 250

input power

W

110 140 180 240 320 400 480 680

Medium

frequency

of the octave

band, Hz

L

WA

L

, dB(A)

pA

Sound power level from the ventilation unit

to supply air ducts by octave band L

ADJUSTMENT POSITION / AIR FLOW

2

99 l/s4123 l/s6159 l/s8199 l/s2136 l/s4158 l/s6186 l/s8218 l/s

Hz

68

63

51

125

39

250

500

24

1000

2000

4000

8000

, dB

W

68

43

A-weighted sound pressure level dB (A) coming from

the unit through the envelope to the rooms where the

ADJUSTMENT POSITION / AIR FLOWS (supply / extract)

2

122/151 l/s4153/186 l/s6183/215 l/s8218/239 l/s

72

57

45

30

11

72

48

unit has been installed

75

61

50

36

23

75

51

42 47 50 53

Sound power level from the ventilation unit

, dB

w

78

65

55

42

31

22

to extract air ducts by octave band Lw, dB

ADJUSTMENT POSITION / AIR FLOW

68

62

42

28

13

70

66

46

32

21

75

71

50

36

27

9

78

73

53

41

32

25

19

78

55

69

48

72

51

77

56

79

58

LpA = A-weighted sound pressure level (10 m2 sound absorption)

2

4

VALLOX 280

CONTROL PANEL

Control

VALLOX 280 can be controlled with the control panel coming with the unit (3 at most) and with optional CO via remote monitoring with a voltage or current signal. In case of disturbances, a potential-free relay point signal is issued.

With an optional VALLOX LON converter, the whole operation of the unit can be controlled via remote monitoring.

Week clock control

The week clock in the control panel of the unit can be used to programme the desired fan power option (1…8) for each hour in the day.

Control panel

Start button

1

With this button, you switch the unit on and off. When the indicator is lit, the unit is on.

2

Carbon dioxide adjustment

With this button, you set carbon dioxide adjustment on and off. When the indicator is lit, the adjustment is on.

3

Humidity adjustment

With this button, you set humidity adjustment on and off. When the indicator is lit, the adjustment is on.

4

Post-heating

With this button, you set post-heating on and off. When the indicator is lit, post-heating is on. The summer function is active when the indicator is not lit.

Main display

Fan speed may be changed in this display with the + and - buttons.

(5 at most) and %RH sensors (2 at most). Fan speeds of the unit can be controlled

2

Scrolling up

5

With this button, you can scroll the displays upward.

6

Scrolling down

With this button, you can scroll the displays downward.

7

Increase button

With this button, you can increase values.

8

Decrease button

With this button, you can decrease values.

Fan speed Supply air temperature Post-heating is on

Maintenance reminder alert Fireplace / booster switch on Week clock control

Filter guard alert

1 2 3 4

5 6 7 8

Keyboard

1 21 C

Main display

Mounting, removing and wiring of control panel

The control panel is wired straight from the electrical connection box. The control panel can also be connected in series with a CO External electrical connections on page 8).

sensor or another control panel. (See

2

Control panel addresses

If two or more control panels are connected to the system, the addresses of the control panels need to be changed.

E.g. 3 control panels.

• Connect the first control panel to the unit and change its address to 3.

• Connect the second control panel to the unit and change its address to 2.

• Connect the third control panel and make sure that its address is 1.

If control panels have the same address, they go to bus fault state. In this case, remove one of the control panels and change the address of the other panel. The above mentioned situation can arise in connection with the later installation of an additional control panel.

Connecting two or more units (slave unit)

Connect slave units as specified in the adjoining connection instructions. Slave units do not operate independently, but follow the instructions received from the host unit. Neither control panel nor sensors must be connected to a slave unit.

NOTE! + wire must not be connected to a SLAVE UNIT. SLAVE UNIT must not have a 6K8 resistor in place.

SLAVE UNIT TERMINAL BLOCKHOST UNIT TERMINAL BLOCK SLAVE UNIT TERMINAL BLOCK SLAVE UNIT TERMINAL BLOCK

Paneelin osoite 1

Panel address 1

5

SENSORS

VALLOX 280

Surface mounting of control panel

A control panel is mounted on the wall or on a 1-part instrument box.

HUMIDITY SENSORS

• When mounting two or more humidity sensors, connect them to the terminal block of the connection box by connecting the first humidity sensor to %RH1, in place of the resistor 6K8 in the terminal block (remove the resistor in this case), and the second humidity sensor to %RH2. See the electrical diagram.

Wiring

1 2 3 4 5

+ – A B M

Cable: NOMAK 2 x 2 x 0.5 mm

NOTE!

Faulty coupling of the (+) wire destroys the control panel!

1 = orange 1 = +

Width 90 mm Height 110 mm Depth 23 mm

2 = white 1 = – 3 = orange 2 = A 4 = white 2 = B 5 = metal = signal ground

Electronics board of control panel

Mounting and wiring of humidity sensor

The sensor is wired straight from the electrical connection box of the unit.

Surface mounting

14

Base plate of sensor

125

38

76

Wiring

S +

Electronics board of %RH sensor

2

+ 0.5 mm

ca. 21 VDC

}

2

CARBON DIOXIDE SENSORS

• Carbon dioxide sensors are connected individually.

• When the first carbon dioxide sensor has been connected to the system, the unit is switched on. After this, the unit gives the sensor an address. Follow the same steps for other carbon dioxide sensors.

Cable: 2 x 0,5 mm

2

Mounting and wiring of carbon dioxide sensor

The CO2 sensor is connected directly from the connection box of the unit, or in series with another CO

Surface mounting

125

sensor or control panel (see External electrical connections on page 8).

2

Wiring

1 2 3 4 5

+ – A B M

14

38

76

Base plate of the CO2 sensor Electronics card of the CO2 sensor (model may vary)

Cable: NOMAK 2 x 2 x 0.5 mm

NOTE!

Faulty coupling of the (+) wire destroys the carbon dioxide sensor!

1 = orange 1 = + 2 = white 1 = – 3 = orange 2 = A 4 = white 2 = B 5 = metal = signal ground

2

+ 0.5 mm

ca. 21 VDC

}

2

6

VALLOX 280

INTERNAL ELECTRICAL CONNECTION

R1

FAN CONTROL WITH VOLTAGE OR CURRENT SIGNAL

USE OF JUMPER IN VOLTAGE SIGNAL CONTROL (FACTORY SETTING)

USE OF JUMPER IN CURRENT SIGNAL CONTROL

PDS 2

PDS 1

TE 1 (EXTRACT AIR) TE 3 (OUTDOOR AIR) TE 2 (SUPPLY AIR) TE4 (EXHAUST AIR), HR CELL

MOTHERBOARD

5104938271 6

PDS S

PDS +

G

S

N D

104 938271

230 V

16 V

TR

FAULT

-+AB

0 V

VAK S

VAK GND

BOOSTER SWITCH

D

C

P

T

%RH-2/S

%RH-2/+

S

SS

%RH-1/+

S

B

M

%RH-1/S

LN NC

N

L

-

L

A

N

+

L1

S

L2

U1

H1

U3

N4

L2

U1

H2

N4

F

FG

~

LP1

SV

LP2

SF = SUPPLY AIR FAN 520 W DC EF = EXTRACT AIR FAN 520 W DC H1= INTERFERENCE SUPPRESSOR, MOTHERBOARD H2= INTERFERENCE SUPPRESSOR, MOTHERBOARD FG = DAMPER MOTOR 24 VAC TE = TEMPERATURE SENSORS R1 = AUXILIARY RESISTOR 6.8 KOHM TR = TRANSFORMER 230 V 4 A / 24 V 25 VA F = MOTHERBOARD FUSE

PWM

GND

Y

PWM

2

1

R

Bl

EF

TZ1

TZ2

L3L4 N

L5 NCL

NN

R

Y

Bl

SF

S = MAINTENANCE SWITCH (DOOR SWITCH) LP1 = ELECTRIC HEATER 2500 W (PREHEATING, OPTION) LP2 = ELECTRIC HEATING UNIT 2500 W (POST-HEATING, OPTION) SV = WATER HEATING UNIT ACTUATOR (POST-HEATING UNIT, OPTION) TZ1 = OVERHEAT PROTECTION +60 ˚C TZ2 = OVERHEATING PROTECTOR +95 ˚C (NEEDS TO BE ACKNOWLEDGED) PDS1 = SUPPLY AIR FILTER PRESSURE DIFFERENCE SWITCH (OPTION) PDS2 = EXTRACT AIR FILTER PRESSURE DIFFERENCE SWITCH (OPTION)

7

VALLOX 280

EXTERNAL ELECTRICAL CONNECTIONS

FAN CONTROL:

Voltage signal: 0...10 VDC

(Factory setting)

Current signal: 0...20 mA

For moving the jumper in the motherboard,

see the internal electrical connection diagram.

REMOTE MONITORING

(Additional control option)

S GND

(1 A, 24 VDC)

FAULT SIGNAL

BOOSTER SWITCH / FIREPLACE SWITCH

(Additional control option)

CONNECTED TO THE UNIT

A B+

-

NOMAK 2x2x0.5+0.5

ONE OR MORE

OPTION

CO

2

THE RESISTOR IS REMOVED WHEN

THE FIRST HUMIDITY SENSOR IS

SENSOR

NOTE!

Faulty coupling of the + wire

DESTROYS THE SENSOR.

OPTION

LON CONVERTER

+

B

LonWorks-FT10

A

M

NOTE! When bus system based fan control is used in the VALLOX 280 unit, looping between VAK S and VAK GND is disconnected.

PDS S

20

PDS +

19

FAULT

18

FAULT

VALLOX 280

DISTRIBUTION PANEL

230 V/400 V

BOOSTER SWITCH

VAK S VAK GND %RH-2/+ %RH-2/S %RH-1/+ %RH-1/S

M B A

-

+

L1

L N

PE

16 A

17 16 15 14 13 12

11

10

9 8 7 6 5 4 3 2 1

N

4 X 0.5

2x0.5

R= 6K8

3x2,5S (4x2,5S)

CONTROL PANEL 1

ONE OR MORE

1 INCLUDED AS STANDARD

NOTE! When VALLOX 280 is used with a PREHEATING UNIT and a WATER-

CIRCULATING POST-HEATING UNIT, L and L1 in the terminal block are

looped. There is then NO NEED for a separate supply for preheating.

NOTE! When VALLOX 280 is used with a PREHEATING UNIT and an

ELECTRIC POST-HEATING UNIT, a separate 16 A supply is needed for

PREHEATING.

NOTE!

Faulty coupling of the + wire

DESTROYS THE CONTROL PANEL.

+

AMB

NOMAK 2x2x0.5+0.5

HUMIDITY SENSOR

OPTION

2

2x0.5

HUMIDITY SENSOR

OPTION

NOMAK 2x2x0.5+0.5

ORANGE 2 = A

WHITE 2 = B

METAL = M

2x0.5

S

+

CONNECTED TO REPLACE RESISTOR R

(CONNECTOR %RH-1/+ AND %RH1/S)

S

ORANGE 1 = +

WHITE 1 = –

16 A

+

1

2

8

VALLOX 280

FILTERING, HEAT RECOVERY, HEATING

Filtering

Efficient filtering of outdoor air (G3 + F7) prevents harmful particles from entering the ductwork and rooms via the unit. Good filtering of extract air (G3) diminishes the contamination of the unit and ensures efficient heat recovery and extract air fan operation. Clogging of the supply / extract air filters can be monitored by equipping the unit with a pressure difference switch.

Heat recovery and heating

With efficient heat recovery, most of the heat of contaminated extract air can be transmitted to outdoor air coming inside. The efficiency of the heat recovery cells is circa 70%. If outdoor air does not get sufficiently warm in the heat recovery cells, it can be heated with a water or electric post-heating unit (optional).

The unit features an automatic heat recovery bypass function, which eliminates needless heating of outdoor air during summer.

The unit also has an automatic defrost function for the water postheating unit.

Defrost

The automatic defrosting of the heat recovery cells intermittently stops the supply air fans when the temperature of exhaust air goes under the set threshold value. In order to minimise momentary stoppages of the supply air fans the fan can also be equipped with an electric preheating unit.

Water post-heating unit VKL (option)

Power of water radiator

Temperature of water coming to the radiator (tv) 70 ˚C

Temperature of air coming to the radiator (ti) 15 ˚C

Water flow dm3/s

Total power of the radiator kW

Air flow dm

3

/s

Electric preheating unit (option)

• Power 2.5 kW, 11 A.

Electric post-heating unit (option)

• Power 2.5 kW, 11 A.

VKL WATER RADIATOR PRESSURE LOSS IN WATER

CIRCULATION

Defined for 100-% water.

Radiator + valve (KVS 1.0)

Total pressure loss kPa

Radiator

Cooling of water in the radiator ˚C

Temperature of water coming to the radiator (tv) 55 ˚C

Temperature of air coming to the radiator (ti) 15 ˚C

Water flow dm3/s

Total power of the radiator kW

Air flow dm

3

/s

Water flow

Cooling of water in the radiator ˚C

9

VALLOX 280

CONTROL DIAGRAM, electric post-heating unit

CO

%RH

H

2

1

S

ALARM

OPERATION MODE

CONTROL

MEASUREMENT

REMOTE MONITORING CONTROL CENTRE OF THE PROPERTY

2x16 A, if resistance power exceeds 2.5 kW,

ADJUSTMENT

a separate supply is needed for preheating

LON

CONVERTER

SILENCER UNIT

TZ2 TZ1

TE1

TE2

Electric post-

heating unit

LP2

VENTILATION ZONE

BOOSTER SWITCH / FIREPLACE SWITCH

CARBON DIOXIDE SENSOR (5 AT MOST)

CONTROL PANEL (3 AT MOST)

CONTROL PANEL (2 AT MOST)

M

EF

TE4

Pressure

difference

PDS2

G 3

F 5

F 7

PDS1

switch

HR2

HR1

16 A

230 V

INTERNAL ELECTRICAL AND CONTROL CONNECTIONS

DISTRIBUTION PANEL

VALLOX 280

Pressure

difference switch

G 3

TE3

2

10

SF

M

FG

LP1

TZ1 TZ2

Electric

preheating unit

VALLOX 280

DESCRIPTION OF OPERATION, electric post-heating unit

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 basic fan speed. After that power is adjusted based either on the measurement data received 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

Fan speed 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 loads, and based on the measurement results of the air quality sensors (CO in the ventilation zone. The aim is to keep carbon dioxide and/or humidity content below

and %RH sensors) located

2

the threshold set at control panel H. It is also possible to select an automatic search for the humidity content setpoint at the control panel. One or more modes of control may be used simultaneously. The dominant mode is the one demanding boosting. Fan speed varies depending on load status between the basic and maximum fan speeds. The basic 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, fan power cannot be raised above the set maximum fan speed. Voltage or current signal control is used to control basic fan speed. Because of this, it is possible to raise fan speed with the manual, CO lower it.

Voltage and current signal values (selection in the motherboard)

Voltage values for each fan speed:

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

Current values for each fan speed:

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

and %RH controls when needed, but not to

2

Supply air temperature

Supply air temperature can be controlled with either constant temperature control or cascade control.

Supply air constant temperature control

The control unit directs the operation of post-heating unit LP2 on the basis of the measuring data given by by supply air 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 temperature sensor TE1, aiming at keeping extract air temperature at the temperature value set on control panel H (+10…+30 ˚C).

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 between 0…+25 ˚C). In this case, the control unit directs the operation of damper motor FG on the basis of measuring results given by outdoor sensor TE3 and extract air temperature sensor TE1. The aim is to get as cool supply air to the ventilation zone as possible. However, heat recovery is always active when outdoor air temperature is below the setpoint.

Heat recovery defrosting

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 exhaust air temperature sensor TE4, preventing freezing alerts and the stopping of supply air fan SF. If the power of preheating unit LP1 is not sufficient, the control centre keeps stopping supply

air fan SF on the basis of the measurement data of exhaust air temperature sensor TE4, thus preventing the HR cell from freezing. As soon as the risk passes, the fan restarts automatically. The threshold temperature (–6...+15 ˚C) and the difference area (1...10 ˚C) for defrosting can be set at control panel H. When the SF fan stops, power supply from preheating unit LP1 is stopped and post-heating radiator LP2 continues to heat.

Overheating protection of heating unit

Overheating protection thermostats TZ1 and TZ2 monitor the surface temperature of heating units LP1 and LP2. If surface temperature exceeds the threshold, overheat protection is triggered and power supply to the heating unit is stopped. Overheat protector TZ1 is reset automatically and TZ2 manually.

Alarms

Pressure difference switches PDS1 and PDS2 monitor the pressure difference between the supply and extract air sides. If the pressure difference rises too high, an alarm will be issued. This is indicated by a symbol (

) in the main display of the control panel. If the unit is not equipped with pressure difference switches, the symbol ( ) appearing in the main display of the control panel reminds of the need of servicing the unit. The reminder interval can be set between 1...15 months. The factory setting is 4 months. This function is always active. The fault signal relay in the unit gives potential-free alarm indications on the following fault conditions:

• alarm of high carbon dioxide content (> 5000 ppm ) switches the relay at 1-second inter-

vals. The fans stop. This is acknowledged by switching off the unit.

• in other fault situations, such as a sensor fault and a filter guard alarm (

), the points of

the relay close.

Booster or fireplace switch function

The booster or fireplace switch function of the 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 switch operation is selected at control panel H. The booster switch function raises fan speed to the set maximum 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.

PARTS LIST VALLOX 280, electric post-heating unit

Code Name Technical data Standard /

(factory settings in parentheses) Option

CO2 Carbon dioxide sensor, 5 at most Adjustment range 500...2000 ppm (900) Option

Carbon dioxide control Adjustment interval 1...15 min. (10) FG Damper motor HR bypass automation, 24 V, 2 W, 8 Nm Standard H Control panel, 3 at most Setting, operation, display, 1 included standard S Booster / fireplace Either booster or fireplace switch Standard in

switch function operation (booster switch) control panel LON LON converter Remote monitoring control Option LP1 Preheating unit Electric radiator 2.5 kW Option LP2 Post-heating unit Electric radiator 2.5 kW Option HR1, HR2 Heat recovery cell 2-step, PDS1 Pressure difference switch Adjustment range 0...500 Pa Option

Pressure guard of the supply air filter PDS2 Pressure difference switch Adjustment range 0...500 Pa Option

Pressure guard of the extract air filter EF Extract air fan qv = 290 dm %RH Humidity sensor, 2 at most Automatic / adjustment range 1...99% Option

Humidity control Adjustment interval 1...15 min. (10) G3, F7 Filter Supply air G3+F7, extract air G3 Standard F5 Filter Extract air F5 Option TE4 Temperature sensor Exhaust air temperature Standard

HR cell antifreezing, 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 TE1 Temperature sensor Extract air temperature Standard SF Supply air fan qv = 245 dm TZ1 Overheating protection Automatic (+ 60 ˚C), Self-resetting Included in

of heating unit LP1/LP2 TZ2 Overheating protection Manually reset (+95 ˚C) Included in

of heating unit LP1/LP2

= 70% Standard

3

/s (100 Pa) Standard

3

/s (100 Pa) Standard

11

VALLOX 280

CONTROL DIAGRAM, water-circulating post-heating unit

2

%RH

1

%RH

1

H

2

1

CO

S

Ljp

Ljm

ALARM

OPERATION MODE

CONTROL

MEASUREMENT

REMOTE MONITORING CONTROL CENTRE OF THE PROPERTY

ADJUSTMENT

BOOSTER SWITCH / FIREPLACE SWITCH

CARBON DIOXIDE SENSOR (5 AT MOST)

CONTROL PANEL (3 AT MOST)

CONTROL PANEL (2 AT MOST)

VENTILATION ZONE

SILENCER UNIT

TE1

M

EF

TE2

TE4

LON

PDS2

G 3

F 5

SV

LP2

F 7

Pressure

difference switch

HR2

HR1

CONVERTER

PDS1

Pressure

difference switch

16 A

230 V

G 3

SF

M

FG

LP1

TZ1 TZ2

DISTRIBUTION PANEL

INTERNAL ELECTRICAL AND CONTROL CONNECTIONS

VALLOX 280

TE3

Electric preheating unit

2

12

VALLOX 280

DESCRIPTION OF OPERATION, water-circulating post-heating unit

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 basic fan speed. 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

Fan speed 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 loads, and based on the measurement results of the air quality sensors (CO2 and %RH sensors) located in the ventilation zone. The aim is to keep carbon dioxide and/or humidity content below the threshold set at control panel H. It is also possible to select an automatic search for the humidity content setpoint at the control panel. One or more modes of control may be used simultaneously. The dominant mode is the one demanding boosting. Fan speed varies depending on load between the basic and maximum fan speeds. The basic 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, fan power cannot be raised above the set maximum fan speed. Voltage or current signal control is used to control basic fan speed. Because of this, it is possible to raise fan speed with the manual, CO controls when needed, but not to lower it.

Voltage and current signal values (selection in the motherboard)

Voltage values for each fan speed:

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

Current values for each fan speed:

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

and %RH

2

Supply air temperature

Supply air temperature can be controlled with either constant temperature control or cascade control.

Supply air constant temperature control

The control unit directs the operation of control valve SV in post-heating unit LP2 on the basis of the measuring data given by supply air 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 control valve SV in post-heating unit LP2 on the basis of the measurement data given by extract air temperature sensor TE1, aiming at keeping extract air temperature at the temperature value set on control panel H (+10…+30 ˚C).

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 is more than the set threshold value (to be set between +0…+25 ˚C). In this case, the control unit directs the operation of damper motor FG on the basis of measuring results given by outdoor sensor TE3 and extract air temperature sensor TE1. The aim is to get as cool supply air to the ventilation zone as possible. However, heat recovery is always active when outdoor air temperature is below the setpoint.

Heat recovery defrosting

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 exhaust air temperature sensor TE4, preventing freezing alerts and the stopping of supply air fan SF. If the power of preheating unit LP1 is not sufficient, the control centre keeps stopping supply air fan SF on the basis of the measurement data of exhaust air temperature sensor TE4, thus preventing the HR cell from freezing. As soon as the risk passes, the fan restarts automatically. The threshold temperature (–6...+15 ˚C) and the difference area (1...10 ˚C) for defrosting can be set at control panel H. When fan SF stops, power supply from preheating unit LP1 is stopped and post-heating radiator LP2 continues to heat.

Water radiator freezing protection

The control centre of the unit stops fans SF and EF on the basis of the measurement data of outdoor temperature sensor TE3 (outdoor air < 0 ˚C) and supply air temperature sensor TE2 (supply air + 7 ˚C), thus preventing water heating unit LP2 from freezing. A freezing alert appears in the display of the control panel. The fans restart automatically as soon as the risk of freezing passes (supply air > +10 ˚C).

Preheating unit overheat protection

Overheating protection thermostats TZ1 and TZ2 monitor the surface temperature of heating units LP1 and LP2. If surface temperature exceeds the threshold, overheat protection is triggered and power supply to the heating unit is stopped. Overheat protector TZ1 is reset automatically and TZ2 manually.

Alarms

Pressure difference switches PDS1 and PDS2 monitor the pressure difference between the supply and extract air sides. If the pressure difference rises too high, an alarm will be issued. This is indicated by a symbol ( equipped with pressure difference switches, the symbol (

) in the main display of the control panel. If the unit is not

) appearing in the main display of the control panel reminds of the need of servicing the unit. The reminder interval can be set between 1...15 months. The factory setting is 4 months. This function is always active. The fault signal relay in the unit gives potential-free alarm indications on the following fault conditions:

• When the defrost function of the water-circulating radiator is on, the points of the relay

close and open at a 10-second interval.

• Alarm of high carbon dioxide content (> 5000 ppm ) switches the relay at 1-second inter-

vals. The fans stop. This is acknowledged by switching off the unit.

• In other fault situations, such as a sensor fault and a filter guard alarm (

), the points of

the relay close.

Booster or fireplace switch function

The booster or fireplace switch function of the 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 switch operation is selected at control panel H. The booster switch function raises fan speed to the set maximum 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.

PARTS LIST VALLOX 280, water-circulating post-heating unit

Code Name Technical data Standard /

(factory settings in parentheses) Option

CO2 Carbon dioxide sensor, 5 at most Adjustment range 500...2000 ppm (900) Option

Carbon dioxide control Adjustment range 1...15 min (10) FG Damper motor HR bypass automation, 24 V, 2 W, 8 Nm Standard H Control panel, 3 at most Setting, operation, display, 1 included Standard S Booster / fireplace Either booster or fireplace switch Standard in

switch function operation (booster switch) control panel LON LON converter Remote monitoring control Option LP1 Preheating unit Electric radiator 2.5 kW Option LP2 Post-heating unit Water radiator 5.0 kW, 70/50 ˚C Option HR1, HR2 Heat recovery cell 2-step, PDS1 Pressure difference switch Adjustment range 0...500 Pa Option

Pressure guard of the supply air filter PDS2 Pressure difference switch Adjustment range 0...500 Pa Option

Pressure guard of the extract air filter EF Extract air fan qv = 290 dm %RH Humidity sensor, 2 at most Automatic / adjustment range 1...99% Option

Humidity control Adjustment interval 1...15 min. (10) G3, F7 Filter Supply air G3 + F7, extract air G3 Standard F5 Filter Extract air F5 Option TE4 Temperature sensor Exhaust air temperature Standard

HR cell antifreezing, 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 TE1 Temperature sensor Extract air temperature Standard SF Supply air fan qv = 245 dm TZ1 Overheating protection Automatic (+ 60 ˚C), self-resetting Included in

of heating unit LP1/LP2 TZ2 Overheating protection Manually reset (+95 ˚C) Included in

of heating unit LP1/LP2

= 70% Standard

3

/s (100 Pa) Standard

3

/s (100 Pa) Standard

13

INSTALLATION

12

A

B

C

20

8

VALLOX 280 L

A

OUTDOOR AIR

B

SUPPLY AIR EXTRACT AIR

C D

EXHAUST AIR

10

Lead-in seals for electrical connections

9

Condensing water outlet

8

Condensing water tank

20

Base

12

Measurement outlets

Condensing water outlets

CONDENSING WATER OUTLET, MODEL R

332

483

VALLOX 280 R

A

EXHAUST AIR

B

EXTRACT AIR SUPPLY AIR

C D

OUTDOOR AIR

DOOR

CONDENSING WATER OUTLET, MODEL L

483

10

VALLOX 280

Location

• The unit is mounted indoors, in a place where temperature does not fall below +10 ºC.

• The unit is to be mounted in a place where the sound pressure level coming through the envelope is not acoustically disturbing (storerooms, corridors, technical rooms, and in some cases rooms where people spend time, such as classrooms).

D

9

• The unit is equipped with an adjustable base. If the unit is mounted on the wall, attention needs to be paid to the weight of the unit (206 kg) and to vibration isolation.

• The unit is splash protected (IP 34) and can thus also be mounted in a damp room.

Electrical connections

• The unit is permanently connected to the mains supply. The electrical connection box of the unit is located inside the unit, in connection with the exhaust air duct.

• Cables connected to the unit are led through the lead-in seals next to the extract air duct outlet.

• The cables are connected to the unit by taking off the upper door and the cover of the electrical connection box located in the exhaust air duct. Follow the connection instructions. The external and internal connection diagrams are shown in these instructions and inside the cover of the electrical connection box.

Duct connections

• The unit is equipped with four ø 250 external connection outlets. Necessary connecting pieces (e.g. inner or bent connectors) can be attached to external connection outlets.

NOTE! LENGTH OF THE CONNECTING HEAD OF THE CONNECTING PIECE NO MORE THAN 50 MM.

Fix the ducts steadily and tightly to the relevant outlets. (NOTE! Unit models L/R). Implement duct insulation if needed as defined in the ventilation plan.

Air flow measurement outlets

• The fixed air flow measurement outlets are located behind the VALLOX nameplate (12) at the upper edge the unit. You can easily remove the nameplate by sliding it upward and pulling it toward yourself.

• Via the measurement outlets, the total pressure of the supply and extract air ductwork can be measured with a differential pressure instrument. Pressure readings and air volume tables (p. 3 or 4) show volume flow rates at various adjustment positions.

• The red measurement hose is on the pressure side and the black hose on the suction side of the fan.

Condensing water connections

• Water condensing from extract air going through the unit can be removed from the bottom tank in two ways.

• When the humidity content of extract air is high, as for example in washrooms, the condensing water is led from the screw-type coupling in the bottom tank to the floor drain via the condensing water outlet (water seal) delivered with the unit.

• When the humidity content of extract air is low, as in office rooms, the condensing water can be led from the screw-type coupling in the bottom tank to the condensing water tank delivered with the unit. It is pushed below the bottom tank to the guide posts in the base. In this case, no separate condensing water outlet is used. NOTE! When a condensing water tank is used, it has to be inspected sufficiently often.

332

• The screw-type coupling is located almost in the middle of the unit. This is why the unit has to be mounted level with the horizontal.

Pipe connections

• If the unit is equipped with a water-circulating post-heating unit, it is connected to the warm water circuit with 15/13 copper tubes.

NOTE! WATER-CIRCULATING HEATING RADIATOR INCLUDES A CONTROL VALVE.

Pressure difference switches

If the unit is equipped with pressure difference switches controlling the pressure difference in the supply and/or extract air filters, they have to be set at correct values according to the adjustment position chosen. For further instructions, see the instructions for use and maintenance of VALLOX 280.

2

14

VALLOX 280

INSTALLATION

Silencer

General

• The silencing unit is meant as a duct silencer mounted upon the VALLOX 280 unit. The unit has an opening cover, thanks to which the unit can be cleaned without detaching the ducts.

• The unit also incorporates detachable lamellar silencer plates in supply and extract air ducts.

• 4 external joints with a diameter of ø 250 mm are used as duct joints, allowing the leading of ductwork directly from the unit with curved sections, for instance.

• The top of the unit has lead-in seals for the lead-in pipes of cables and also for the supply and return water pipes of a water-circulating heater if such a heater is used.

• The weight of the silencer unit is 105 kg with door, and 82 kg without door.

Installation

NOTE! BEFORE INSTALLATION CHECK THE MODEL OF VALLOX 280 (L or R).

• Detach the door of the silencer unit. (See the adjoining figure.)

• Pierce the lead-in seals on VALLOX 280. (See figure item D.)

• Pierce the lead-in seals at the bottom of the exhaust air duct of the silencer unit (no insulation inside).

NOTE! VALLOX 280 model L or R. (See the figure.)

• If VALLOX 280 is equipped with a water-circulating heater, also detach the lamellar silencer plate in the supply air duct of the heater.

NOTE! VALLOX 280 model L or R. (See the figure.)

• Lift the unit on top of VALLOX 280.

• Mount the lead-in pipes (included in the delivery) for cables in place by pushing them first through the lead-in seals located at the top of the silencer unit and then through the lead-in seals in the VALLOX 280 unit.

• Thread necessary cables through lead-in pipes to the connection box located within VALLOX 280.

• If you use a water-circulating heater, mount the supply and return water pipes for it (not included in the delivery) through the lead-in seals located at the top of the silencer unit and VALLOX 280, and connect them to the supply and return water outlets, using e.g. a straight connector. (See items A and B in the figure.)

• Mount the lamellar silencer section in place.

• Carefully fix the door of the silencer unit in place.

• Fix the ducts steadily and tightly to the relevant outlets. Implement duct insulation if needed as defined in the ventilation plan.

Supply and return water pipe ø 15/13 2 pcs

Straight connector MS 15 2 pcs

Supply and return water outlet 2 pcs

Lamellar silencer section

Cable lead-in pipe 3 pcs

Supply and return water pipe ø 15/13 2 pcs

Lead-in seal for supply and return water pipe 2 pcs

Silencer unit (Note! VALLOX model)

Duct connection ø 250 4 pcs

Cable lead-in pipe 3 pcs

Lead-in seal for cable lead-in pipe 3 pcs

VALLOX 280 L

(Note model)

15

Vallox Oy FI-32200 Loimaa Finland Telephone +358 2 7636 300 Fax +358 2 7631 539

www.vallox.com

1.09.357E/22.01.07/PDF