Vallox 90 SE R, 90 SE L, 90 SE Series Technical Specification

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Page 1

Vallox

• 1.09.331E

• 9.4.2013

• Code 3520 © VALLOX

Models:

VALLOX 90 SE R VALLOX 90 SE L

Code 3520

Technical Research Centre of

Finland VTT certificate number

C326/05

DIGIT SED

ELECTRONIC CONTROLLER WITH LCD DISPLAY

• Highly efficient heat recovery (␩> 80 %)

• Energy-efficient integrated direct-current fans

• Electronic Vallox Digit SED adjustment system enables automatic ventilation adjustment

• Wireless remote monitoring possible (option)

• Preheating with electric radiator

• Post-heating with electric radiator

• Electronically controlled automatic antifreeze

• Automatic heat recovery cell bypass during summer

• Good outdoor air filtering (F7)

• Fireplace/booster function

• Maintenance reminder

• Humidity sensor

• Carbon dioxide sensor

• Can be connected to data networks (LON)

• Elegant design

• Handy door locking mechanism

• Fixed air flow measuring outlets

Electrical connection 230 V, 50 Hz, ≈5 A

(+ post-heating radiator 3.9 A)

Class of protection IP 34

Fans Extract air 0.119 kW 0.9 A 92 dm direct current (DC) Supply air 0.119 kW 0.9 A 75 dm Heat recovery Cross-counterflow cell, Heat recovery bypass Automatic Electric preheating unit (standard equipment) max. 1000 W 4.3 A Electric post-heating unit (option) max. 900 W 3.9 A Filters Supply air G4 and F7

Extract air G4 Weight 52 kg Power adjustment of ventilation - control via control panel

Options - CO

/s 50 Pa

and %RH control

- CO

- remote monitoring control (LON converter)

- remote monitoring control (voltage/current signal)

sensor

- %RH sensor

- LON converter

- Insulated attic floor penetration plate

- Ceiling mounting plate Vallox 90

> 80%

TECHNICAL SPECIFICATION

Page 2

VALLOX 90 SE

DIMENSIONS AND MAIN PARTS

Dimensions and duct outlets

597

687.7

MODEL R

82.6

157.5 157.2 117.2

360.4

DIGIT SED

ELECTRONIC CONTROLLER WITH LCD DISPLAY

83.2160

5 6

123

Measurement outlets

MODEL L

157.2117.2

360.4

Duct outlets, inner diameter of collar ø 125 mm

Supply air to the dwelling

Extract air from the dwelling

Outdoor air to the unit

Exhaust air outside

157.5 82.6

Measurement outlets are located behind the machine plate. Detach

83.2

160

the machine plate by pushing it to the left and pull the outlets out.

Condensing water outlet

The condensing water outlet is situated at the bottom of the unit.

Fastening brackets

The fastening brackets are situated up in the back of the unit.

Main parts

Extract air fan

Supply air fan

Preheating radiator

Post-heating radiator (option)

Heat recovery cell

Outdoor air filter G4

Extract air filter G4

Summer/winter damper

1010

Safety switch

Wall mounting bracket

Plug 1.2 m

Carbon dioxide sensor

Humidity sensor

LON converter

Outdoor air filter F7

Control panel DIGIT SED

Page 3

Air volumes

PERFORMANCE

VALLOX 90 SE

SUPPLY/EXTRACT AIR VOLUMES / VALLOX 90 SE

300

250

200

150

100

Pressure loss in ducts. Total pressure

0 10 20 30 40 50 60 70 80 90 100 110

SFP 1.5 kW/m3/s

Volume flow rate

SFP (Specific Fan Power) guideline value < 2.5 (kW/m

/s)

Supply air, fan speed 1...8 Extract air, fan speed 1...8

Sound values

Sound power level from the ventilation unit

Medium

frequency

of the octave

band,

125

250

500

1000

2000

4000

8000

, dB

LWA, dB(A)

, dB(A)

to supply air ducts by octave band L

ADJUSTMENT POSITION/AIR FLOW

16,5 l/s427,2 l/s640,9 l/s865,6 l/s223,8 l/s435,8 l/s651,9 l/s876,7 l/s

61,7

46,9

39,6

35,1

31,1

13,0

61,8

38,5

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

the unit through the envelope to the rooms where

ADJUSTMENT POSITION/AIR FLOWS (supply/extract)

17/24 l/s429/39 l/s644/56 l/s869/81 l/s

23,9 30,6 38,0 45,3

67,2

56,2

47,0

41,6

38,7

25,7

15,6

67,6

46,1

the unit has been installed (10 m2:n sound absorption)

73,1

64,3

54,4

18,6

45,7

34,4

27,5

20,0

73,7

53,3

, dB

82,1

73,4

63,5

57,3

52,4

43,5

35,9

22,6

82,7

61,9

Input power (total) (W)

SFP=

Air flow (max.) (dm

Sound power level from the ventilation unit

to extract air ducts by octave band L

ADJUSTMENT POSITION/AIR FLOW

56,9

46,4

39,5

32,7

27,9

17,6

57,4

36,4

63,9

53,9

44,6

38,8

35,5

24,5

13,3

64,3

43,5

69,6

60,8

52,2

45,6

43,2

33,6

23,2

70,2

50,5

VALLOX 90 SE

dm3/s

, dB

75,6

69,1

61,0

53,3

48,9

42,9

33,8

76,7

58,2

/s)

Measuring points after the connection outlet.

Fan curves indicate the total pressure available for duct losses.

Supply air

Extract air

Fan

speeds

1 2 3 4 5 6 7 8

Total

input power

12 18 25 34 50

75 117 185

Page 4

CONTROL PANEL

1 2 3 4

5 6 7 8

VALLOX 90 SE

Control

VALLOX 90 SE can be controlled with the control panel delivered with the unit (3 control panels at most) or with optional CO

Fan speeds of the unit can be controlled via remote monitoring with a voltage or current signal. In case of disturbances, a potential-free relay contact 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.

sensors (5 at most) and humidity sensors (2 at most).

21 C

Keyboard

Main display

10:20

Control panel

Start button

Use this button for switching the unit on and off. When the indicator is lit, the unit is on.

Carbon dioxide adjustment

Press this button to switch carbon dioxide adjustment on and off. When the indicator is lit, the adjustment is on.

Humidity adjustment

Press this button to switch humidity adjustment on and off. When the indicator is lit, the adjustment is on.

Post-heating

Press this button to switch 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

3 21 C

10:20

Fan speed (3). Supply air temperature (21 °C) Post-heating is on. Time. Filter guard alert.

Maintenance reminder alert. Fireplace/booster switch on. The

fireplace/booster switch is activated in this display by simultaneously pressing down the + and – buttons for 2 seconds.

Week clock control on.

Scrolling up

With this button you can scroll the displays upward.

Scrolling down

With this button you can scroll the displays downward.

Increase button

With this button you can increase values.

Decrease button

With this button you can decrease values.

Page 5

VALLOX 90 SE

CONTROL PANEL MOUNTING

Mounting, removing and wiring of control panel

The control panel is wired straight from the VALLOX 90 SE electrical connection box. The control panel can also be connected in series with a CO (See External electrical connections on page 11).

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.

sensor or another control panel.

Paneelin osoite 1

Panel address 1

Surface mounting of control panel

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

Width 90 mm Height 110 mm Depth 23 mm

Wiring

1 2 3 4 5

+ – A B M

Electronics board of control panel

Cable: NOMAK 2 x 2 x 0.5 mm2 + 0.5 mm

NOTE!

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

1 = orange 1 = + 2 = white 1 = -

}

ca. 21 VDC

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

Page 6

VALLOX 90 SE

MOUNTING OF SENSORS

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 6K8 resistor in the terminal block (remove the resistor in this case), and the second humidity sensor to %RH2. See the electrical diagram.

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.

Mounting and wiring of humidity sensor

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

Surface mounting

Base plate of sensor

125

Wiring

Electronics board of %RH sensor

Cable: 2 x 0.5 mm

S +

Mounting and wiring of carbon dioxide sensor

The CO2 sensor is wired directly from the VALLOX 90 SE connection box, or it can be wired in series with another CO page 11).

Surface mounting

sensor or control panel (see External electrical connections on

Wiring

1 2 3 4 5

+ – A B M

Cable: NOMAK 2 x 2 x 0.5 mm

+ 0.5 mm

125

Base plate of the CO2 sensor

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 M

Electronics board of the CO2 sensor (model may vary)

}

ca. 21 VDC

Page 7

VALLOX 90 SE

INTERNAL ELECTRICAL DIAGRAM

If the mains connection cable becomes damaged, it must be replaced by the manufacturer, an authorised maintenance company or other qualified person in order to avoid danger.

3x0,25

951129

3x0,25

951016

900W

L2L

123456

PWM

GND

950957

950707

L1 LL2

8 9 10 11 12

PWM

1000W

950511

950785

951016

0 V

16 V

230 V

950785

950939

951049

951050

YEGN

951049

951050

YEGN

950993

S Pressure switch

Remote mon. 0-10Vdc

Fireplace switch

"1" 946140

"2" 946140

"3" 946140

"4" 946140

12x0.25mm2

Fault signal

RS-485 Bus

AB-+

Fireplace switch

Defrosting control

3184600

Remote mon. 0-10Vdc

%RH1

%RH2

Connection box (on the top of the unit)

S RH1 S RH2

PWM2 PWM1

GND

S Fault signal S Fault signal

Extract air

Outdoor air

Supply air

NC NO

N L

B A +

Mother board

NTC-sensors

Fuse T800mA

950994

YEGN

950938

YEGN

T Supply air fan P Extract air fan M1 Autotransformer with a protective voltage coil 230VAC/16VAC L Earthed cord R1 Preheating radiator with 90° and 130° safety thermostats R2 Afterheating radiator with 90° and 130° safety thermostats (Optional) M Damper motor 16VAC

Wire colours

BU = blue BK = black BN = brown WT = white GN = green RD = red GY = grey YEGN = yellow/green

Page 8

VALLOX 90 SE

EXTERNAL ELECTRICAL DIAGRAM

METAL = M WHITE 2 = B ORANGE 2 = A WHITE 1 = – ORANGE 1 = +

2. TWISTED PAIR

}

1. TWISTED PAIR

}

LON CONVERTER OPTION

0…10 VDC (10 VDC, 20 mA)

OR 0…20 mA

REMOTE MON. The short-circuit wire has to be removed before connection.

FIREPLACE SWITCH

Button switch (self-resetting contact)

FAULT SIGNAL MAX. 1 A, 24 VDC (POTENTIAL-FREE POINTS)

NOTE! Faulty coupling of the + wire DESTROYS THE CONTROL PANEL.

CONTROL PANEL 1 POSSIBLY MORE THAN ONE 1 INCLUDED AS STANDARD

NOTE! Faulty coupling of the + wire DESTROYS THE SENSOR.

SENSOR 1

POSSIBLY MORE THAN ONE OPTION

THE FIRST SENSOR IS CONNECTED TO REPLACE THE R6k8 RESISTOR.

HUMIDITY SENSOR %RH1 OPTION

HUMIDITY SENSOR %RH2 OPTION

CONNECTION BOX IS LOCATED ON TOP OF THE UNIT

FIREPLACE

FAULT SIGNAL

RS-485 Bus

SWITCH

FAN CONTROL

CONNECTION BOX INSIDE THE UNIT

PLUG CONNECTION 10 A

1.2 m FROM THE TOP OF THE UNIT

Page 9

VALLOX 90 SE

HEATING OF OUTDOOR AIR

Preheating

The automatic antifrost function of the heat recovery cells intermittently stops the supply air fan when the temperature of exhaust air goes under the set threshold value. To avoid or to decrease the stopping of the supply air fans, supply air can be heated with the preheating radiator of the unit.

If you wish to use preheating, you must change the setpoint of preheating for the VALLOX 90 SE unit (see Instructions for use and maintenance, page 10, section 3.3.21).

The preheating radiator is a tubeheater and it is burning hot, when it is in operation. Using the unit without filters is forbidden. Filters prevent the fans and tubeheaters from getting dirty.

Post-heating radiator (option)

The post-heating radiator of the VALLOX 90 SE unit is a resistor, which aims at heating the air blown to the rooms to the preset temperature.

The preheating radiator is a tubeheater and it is burning hot, when it is in operation.

Post-heating adjustment

There are two methods of post-heating

1. Supply air constant temperature control

• Post-heating control used in VALLOX 90 SE is relative; when the temperature selected exceeds supply air temperature by more than 2.5 °C, the radiator is on 100 %, and when the temperature difference gets smaller, the period of active operation is automatically reduced in two-minute sequences. The adjustment range of heating is +10...+ 30 °C.

• The heating radiator is on when the ( control panel.

• The main display of the control panel shows the temperature of supply air.

• Temperature control is only active when post-heating has been switched on.

2. Supply air cascade control

• Supply air temperature control can be changed into cascade control.

• Changes the controlling principle of the post-heating radiator; the temperature of air blown to the ventilation zone is controlled on the basis of extract air.

• The programme tries to keep supply air temperature at a value determined by the difference between extract air and the setpoint as follows: If extract air is warmer than the setpoint, supply air temperature is lower than the setpoint by the difference. If extract air is colder, supply air is higher than the setpoint by the difference.

If the temperature in the ventilation zone is 25 °C and the setpoint is 24 °C, the aim is to blow 23 °C air to the ventilation zone. If the temperature in the ventilation zone is 24 °C and the setpoint is 25 °C, the aim is to blow 26 °C air to the ventilation zone.

• The aim is to keep the temperature of air blown to the ventilation zone always between +10...+30 °C.

• Cascade control can be selected at the control panel, and it is active when post-heating has been switched on.

• The heating radiator is on when the ( control panel.

) sign is displayed in the main display of the

Page 10

VALLOX 90 SE

CONTROL DIAGRAM VALLOX 90 SE

VALLOX 90 SE

DISTRIBUTION PANEL

INTERNAL ELECTRICAL AND CONTROL CONNECTIONS

LON CONVERTER

PLUG

VENTILATION ZONE

CONTROL PANEL (3 AT MOST)

HUMIDITY SENSOR (2 AT MOST)

FIREPLACE / BOOSTER SWITCH

CARBON DIOXIDE SENSOR (5 AT MOST)

OPERATION MODE

CONTROL

MEASUREMENT

ADJUSTMENT

ALARM

REMOTE MONITORING CONTROL CENTRE OF THE PROPERTY

Page 11

VALLOX 90 SE

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 (CO2 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, CO2 and %RH controls.

Voltage and current signal values (selection in the motherboard)

Voltage values for each fan speed: Current signal values

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

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

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.

Parts list for VALLOX 90 SE

Code Name Technical data Standard /

CO2Carbon 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

FG Damper motor HR bypass automation Standard

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 %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 S Fireplace / booster switch Functions as either a fireplace Standard

LP1 Preheating radiator Tubeheater, 1000 W Standard

(factory settings in parentheses) Option

Extract air G4 Standard

24 V, 2 W, 4 Nm

/s (50 Pa) Standard

or booster switch (fireplace switch)

Page 12

VALLOX 90 SE

LOCATION OF VALLOX 90 SE

Installation

VALLOX 90 SE has to be mounted in a place where temperature does not fall below +10 ºC. Without protective casing, the unit must be located in a place with no acoustic disturbance: storerooms, technical rooms etc.

Wall mounting

VALLOX 90 SE is mounted on the wall with a fixing plate as shown in the adjacent figure.

Wall construction

When fixing the unit, take the wall structure into account. Avoid mounting the unit on a hollow, echoing dividing wall and on a bedroom wall because of sound conduction, or prevent sound conduction.

Condensing water

The delivery includes a water seal. With a pipe connected to the water seal, water condensing from extract air can be led to a floor drain (not straight to the drain) The pipe must not rise after the water seal. The unit has to be mounted level with the horizontal in order to ensure that condensing water can get out of the unit.

688

Ceiling mounting/ceiling mounting plate

Fastening of ceiling mounting plate to ceiling

The ceiling mounting plate is mounted straight, and it has to be fastened so that there is a space of circa 6 mm between the back edge of the ceiling mounting plate and the wall (Figure 1).The ventilation unit becomes attached to the back wall. Minimum distance between the lower edge of the ceiling mounting plate and the ceiling of the room is 14 mm. Wit this distance, there will be a vent of circa 2 mm between the upper edge of the mounted unit and the ceiling.

The ceiling mounting plate is fixed to the ceiling with M8 thread bars. When the thread bars have been fastened to the ceiling, first turn the nuts into the thread bars and lift the ceiling mounting plate in place. Then push a rubber damper and washer to each thread bar, all the way into the cup of the plate, and turn the nut. Shorten the lower ends of the thread bars so that they will be at no more than 25 mm from the lower surface of the ceiling mounting plate. NOTE! Shortening the thread bars can only be done before mounting the ceiling mounting plate. The maximum length of a thread bar from the lower surface of the ceiling is the space between the lower surface of the ceiling and the lower surface of the ceiling mounting plate + 25 mm.

Nuts

Locking wing

Figure 2

Mounting of ventilation unit to ceiling mounting plate

Before lifting the unit to the ceiling mounting plate, detach the following items from the unit (Figure 2):

1. Thermostat knob (SC unit)

2. Front panel (leave it hanging from the measurement hoses)

Put the cables of the connection box into the slot in the upper part of the side plate and pull the connection box next to the unit so that the cables remain in the slot. Make sure that the duct outlets for the unit’s extract air duct and for the duct coming from the outside to the unit are equipped with condensing water insulation. Lift the unit in place to the ceiling mounting plate till both locking wings lock to the outer edge of the side plate of the unit. Do a visual check of the tightness of the duct outlets and of the correct moving of the measurement hoses and electric cables. Fasten the front panel and the knob of the thermostat (SC unit) back in place.

Figure 1

THE LEAD-IN OF ELECTRIC WIRES CAN BE DONE FROM BOTH SIDES OF THE UNIT.

597

Condensing water outlet and water seal

Damper rubber Lower

Washer

DURING MOUNTING THE UNIT RISES 10 MM HIGHER THAN THE FINAL HEIGHT.

LOWER EDGE OF BRACKET

40 482 206

150

Cu ø12x1

Wall mounting plate

surface of ceiling

at least 14

ceiling

Attention!

To prepare for external connections from the electrical box of the unit, you can fix the electrical box on the wall beside the unit.

Air flow measurement outlets

The fixed measurement outlets for air flow are located behind the nameplate of the unit. You can measure the total pressure of the supply and extract air ductwork at the measurement outlets, using a differential pressure instrument. Pressure readings and the unit’s air volume tables show volume air flows at various adjustment positions. The red measurement hose is on the pressure side and the black hose on the suction side of the fan.

160

wall

Lower edge of bracket

Vallox Oy • Myllykyläntie 9-11 • FI-32200 Loimaa • Tel. +358 10 7732 200 • www.vallox.com

1.09.331E/9.4.2013/PDF