Vallox 121 SE Series, VALLOX 121 SE L, VALLOX 121 SE R Operating, Maintenance And Technical Instructions

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Page 1

Vallo x

Code

A3560

Models

VALLOX 121 SE R VALLOX 121 SE L

1.09.413E

14.5.2013

1 Extract air fan

2 Supply air fan

3 Post-heating radiator (electric 900 W)

4 Heat recovery cell

5 Outdoor air ﬁ lter F7

6 Outdoor air ﬁ lter G4

7 Extract air ﬁ lter G4

8 Automatic summer/winter damper

9 Safety switch

10 Measurement outlets (behind an opening door)

13 Control panel Digit SED

14 Carbon dioxide sensor (option)

15 Humidity sensor (option)

121

Low-energy ventilation unit

with heat recovery

Operating, maintenance and technical instructions

The ﬁ gure shows the R model

• Can replace MUH-Ilmava

100/120 from 1983–2004 without ductwork alteration

13 14 15

TECHNICAL DATA

Electrical connection 230 V, 50 Hz, ≈ 5.7 A Degree of protection provided by enclosures IP 34 Fans direct current Extract air 0.117 kW 0,9 A 106 dm (DC) Supply air 0.117 kW 0,9 A 104 dm Heat recovery Cross-counter ﬂ ow cell, η >80 % Heat recovery bypass Automatic Electric post-heating unit (standard) 900 W 3.9 A Fans Supply air G4 and F7 Extract air G4 Weight 60 kg Ventilation power adjustment – Digit SED controller

– CO – remote monitoring control (voltage signal)

Options – CO – % RH sensor

/s 100 Pa

and %RH control

sensor

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Vallox

121

Operating instructions VALLOX 121 SE

For indoor air to stay healthy and beneﬁ cial also for the structures

of the dwelling, ventilation has to be in operation continuously. It is

not advisable to stop ventilation even for longer holidays because it makes indoor air stuffy. Also, during the heating season indoor air humidity may condense in the ducts and structures and therefore cause humidity damage. The sensors automatically adjust ventilation to an optimal level even if the dwelling is empty.

Making the unit ready for operation

1. Connect the plug to the mains supply. VALLOX 121 SE is now ready for operation.

2. Start the unit and choose a suitable ventilation power at the control panel. There is either one or more control panels. See the operating instructions for the control panel.

In normal conditions basic ventilation, with a change of air every

two hours, is sufﬁ cient in living areas. Boosting is needed during for example sauna baths, cooking, clothes washing or family parties.

If carbon dioxide and/or humidity sensors have been installed in

the system, VALLOX 121 SE automatically takes care of demandcontrolled ventilation.

Ventilation control

The unit can be controlled with a control panel. The standard weekclock control can be used to control the fan power of the unit and the setpoint for supply air temperature.

Furthermore, demand-controlled ventilation can be adjusted with optional carbon dioxide and humidity sensors.

The fan power of the unit can also be controlled with a voltage signal.

Controlling ventilation with Vallox Digit SED control panel

The control panel can be used for the following ventilation control functions:

OPERATING INSTRUCTIONS

Controlling ventilation with humidity sensor (option)

There are two modes of adjusting fan speed. 1 Automatic humidity setting, which is suitable for controlling

humidity in for example washing rooms. The program records current humidity level and selects it as the setpoint, which it then uses as the target for drying air in a bathroom, for instance after a shower. The setpoint automatically varies for instance according to season and is always at the right level. This setting is factory selected.

2 Humidity level can also be set ﬁ xed. The setting can range

between 1...99 %RH and is set at the control panel. This can be used in for example public saunas and swimming pools. The program aims at keeping humidity at the setpoint. The setpoint can be changed if needed. The mode of adjusting is chosen at the controller. Recommended humidity content of good indoor air is approximately 45%.

• During this control, the control panel can be used to raise fan

speed to the maximum fan speed and to decrease it to the base fan speed.

• In humidity control, fan speed varies between the base and

maximum fan speeds selected.

• When the unit is  rst taken into use with automatic setpoint

search enabled (factory setting), it takes 3 to 10 hours for the program to deﬁ ne the value. During this time, humidity adjustment is not enabled (because the ﬁ rst value, selected at the factory, is 100%).

• Automatic search is enabled even if humidity control is not

selected.

Functions for adjusting ventilation power

• Starting and stopping.

• Power adjustment (8 positions).

• Setting the base fan speed and the

maximum fan speed.

Ventilation power cannot be set lower than the base fan speed.

When carbon dioxide and/or relative humidity adjustments are activated, power cannot be adjusted higher than the maximum fan speed. When humidity and carbon dioxide adjustments have been switched off, fan speed can be raised to speed 8.

Ventilation control with carbon dioxide sensor (option)

• In carbon dioxide control, VALLOX 121 SE adjusts fan speed

so as to keep carbon dioxide content in the ventilation zone below the setpoint. When two or more sensors are used, fan speed is adjusted according to the highest measuring result.

• 1...5 carbon dioxide sensors can be connected as options to

the VALLOX 121 SE unit.

• The adjustment is switched on/off and, if needed, the setpoint

(500...2000 ppm) is set at the control panel. The factory setting is 900 ppm. The recommended maximum carbon dioxide content in good indoor air is circa 1,000 ppm.

• During control, the control panel can be used to raise fan

speed to the maximum fan speed and to decrease it to the

base fan speed. In carbon dioxide control, maximum fan

speed limitation is enabled.

Carbon dioxide and humidity sensors

Controlling ventilation with voltage signal

• VALLOX 121 SE fan power can be controlled with a voltage

signal coming from remote monitoring.

• The signal can be used to select speeds 0–8. However, if

carbon dioxide or humidity adjustment is enabled, the maximum fan speed cannot be exceeded.

• The signal changes the base fan speed.

• The signal does not lock fan speed, i.e. fan speed can be

changed at the control panel within the set limits. Carbon dioxide and humidity adjustment also operate within the set limits.

Voltage signal values

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

What the units include can vary depending on the sales area.

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Vallox

OPERATING INSTRUCTIONS

Adjustment of supply air temperature and summer/winter function

The temperature of air coming to the dwelling can be adjusted between circa +10 °C and +30 °C. When there is a light on the post-heating indicator, post-heating is activated and the unit heats air as needed. The need for heating depends on the setpoint of supply air temperature.

When there is no light on the post-heating indicator, post-heating is off. This means that summer function is activated for the ventilation unit. The unit has a motorised summer/winter function. When the summer function is on, the heat recovery cell is bypassed as soon as outdoor air temperature has risen above the setpoint. See the setpoint for cell bypass, factory setting +12 ºC. When outdoor air temperature goes below the setpoint (factory setting +12 °C), the unit

starts to recover heat. If there is water-circulating post-heating in the unit, supply air  nds the desired value very slowly. It takes hours for

the unit to reach the correct setpoint. The amount of time depends on the temperature of the ﬂ uid circulating in the post-heating radiator.

Two different kinds of supply air temperature adjustment can be chosen at the unit: constant temperature control or cascade control.

In constant temperature control, the unit controls the temperature of

supply air directly in accordance with the measurement information

on the temperature of supply air blown to the ventilation area. In

cascade control, the unit controls supply air temperature according to the temperature of air extracted from the ventilation area. The unit calculates the difference between the air extracted and the setpoint for supply air and uses this difference to control the need for postheating.

Winter function of ventilation unit

A set of parameters has been set at the factory for the freezing of the heat recovery cell. When these parameters are undercut, the ventilation unit start to melt the heat recovery cell. Melting is done by stopping the supply air fan. A normal melting period takes from 15 to 45 minutes depending on the extent of ice on the heat recovery cell and on the amount of extract air ﬂ ow. The unit operates optimally on the factory settings in normal operation in dwellings and detached houses. The parameters only need to be touched in extreme problem situations. Examples of such situations are high humidity loads such as a swimming pool or a situation where the exhaust air duct has frozen through.

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Remember! Switch post-heating off when it starts to get too warm in the dwelling because of warm weather. Switch post-heating on again when it gets cooler in autumn.

Post-heating indicator light

Maintenance reminder symbol

Maintenance reminder

• The maintenance reminder switches on the maintenance re-

minder symbol ( the factory setting being 4 months.

• The maintenance reminder symbol is reset at the main

display of the control panel (see the operating instructions for the control panel, Section 3.1.).

• The interval can be set between 1 and 15 months at the

control panel.

) in the control panel at deﬁ ned intervals,

Fireplace switch function/boosting

Fireplace switch function

• The  replace switch stops the extract air fan for 15 minutes and

produces overpressure in the ventilation zone. This makes it easier to light a ﬁ replace.

• The function is started on 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 for

example to a wall in the  replace room. Upon each pressing,

the stopping function continues for 15 minutes (the switch is not included in the delivery).

• During the function, the  replace/booster switch symbol (

visible in the main display of the control panel.

NOTE! The starting of the extract air fan may weaken draught in the ﬁ replace! In winter, this situation may disturb the winter function of the unit. The situation will normalise in a while, after the ﬁ replace function stops.

Fireplace/ booster switch symbol

) is

Boosting switch function

• The booster switch function raises fan speed to the set maximum

fan speed for 45 minutes. The function is started on 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

for instance a wall in a classroom. Upon each pressing, the

boosting function continues for 45 minutes.

• During the function, the  replace/booster switch symbol (

visible in the main display of the control panel.

• The function is chosen at the control panel.

Fault signal relay (remote monitoring)

• The fault signal relay has potential-free contacts (24 VDC,

1 A).

• The contacts provide information on various failure modes

of the unit.

• Alarm of high carbon dioxide content switches the relay at

1-second intervals.

• In other fault situations, the contacts are closed.

) is

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1. Control panel operation

1.1 Keyboard

Start button

Press the button to turn the ventilation unit on and off. When the indicator is lit, the unit is on.

Carbon dioxide adjustment

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

Humidity adjustment

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

Post-heating

Press the button to turn post-heating on and off. The summer function is on when the indicator is not lit.

Ventilation operating menus

2. Operating menu

2.1. Main display and change of fan speed

The displays of the Operating menu (Sections 2.1–2.6) can be scrolled with the scrolling buttons (see Section 1, ﬁ gure items 5 and 6).

21C 10:20

Main display

Fan speed (3).

Supply air temperature (21°C).

10:20

Time. Filter guard alarm.

Maintenance reminder alarm. Fireplace/booster switch on. The ﬁ replace/booster switch is

activated in this display by simultaneously pressing down the + and – buttons for 2 seconds.

Week-clock control on. Fan speed can be changed in this display with the + and –

buttons (see Section 1.1, ﬁ gure items 7 and 8).

OPERATING INSTRUCTIONS FOR CONTROL PANEL

Scrolling up

With this button you can scroll the displays upward.

Scrolling down

With this button you can scroll the displays downward.

Increase button

Use this button to increase values.

Decrease button

Use this button to decrease values.

Power failure

After a power failure, the unit starts at minimum fan speed. The adjustments and setpoints chosen will remain in the memory of the unit in spite of the power failure.

2.2 Moving to the Settings menu

n order to move to the Settings menu,

To settings menu see manual

2.3 Week-clock control

Week program on

2.4 Content display

RH 35% RH2 40% CO2 0821 PPM

2.5 Temperature display

Out 20 in 20 Sup. 20 Exh. 20

2.6 Setting supply air temperature

Temp. setting 20C

press the + and – buttons simultaneous-

ly. In the Settings menu you can chan-

ge setpoints for the ventilation unit.

Week-clock control can be switched on with the + button and off with the – button. Week-clock control is on when the week-clock control symbol is in the

main display. In week clock control,

the base fan speed and supply air temperature of the unit are adjusted in accordance with the programme as described in Section 4.1.

The content display shows humidity and carbon dioxide content. The corresponding sensors are required (options).

The temperature display shows the temperatures of outdoor air, indoor air, supply air and exhaust air. The accuracy of the temperature sensors is ±2 °C.

Supply air temperature is changed with the + and – buttons.

3. Settings menu

3.1 Resetting maintenance reminder

Mainten. reset Press + and –

The maintenance reminder is reset by pressing the + and – buttons simultaneously. This turns out the maintenance reminder symbol ( display.

You can move to the Settings menu from the Operating menu as described in Section 2.2 The displays of the Settings menu (Sections 3.1–3.29) can be scrolled with the scrolling buttons (see Section

1., items 5 and 6 in the ﬁ gure).

3.2 Choosing maintenance reminder interval

Maintenance rem. 04

) in the main

What the units include can vary depending on the sales area.

The interval for the maintenance reminder is selected with the + and – buttons. The maintenance reminder interval refers to months.

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Vallox

OPERATING INSTRUCTIONS FOR CONTROL PANEL

3.3 Choosing language version

Kieli / Language English

3.4 Adjusting time

Adjust time Press + and -

3.5 Week programme programming

Adjust wk. prog. Press + and -

3.6 Erasing week programme

Erase wk. prog. Press + and -

3.7 Choosing basic humidity level

Rh-level setting automatic

3.8 Basic humidity level setpoint

Basic %RH level 40%

3.9 Changing setpoint for carbon dioxide adjustment

CO2 setting 0900 PPM

3.10 Adjustment interval

Adjust interval 10

3.11 Changing operating temperature of heat recovery cell bypass

Cell bypass 10C

3.12 Mode of operation of ﬁreplace/booster switch

Switch type ﬁreplace switch

3.13 Address of control panel

Panel address 1

3.14 Contrast of control panel display

Display contrast 05

The desired language is chosen with the + and – buttons.

You can adjust time by simultaneously pressing the + and – buttons. See separate instructions in 4.2.

To go to the week-clock programme programming mode press the + and – buttons simultaneously. See the instructions in 4.1.

You can totally erase the week programme by pressing the + and – buttons simultaneously.

The basic humidity level can be chosen as either automatic or manual.

The selection is done with the + and – buttons.

The desired setpoint is chosen with the + and – buttons when manual adjustment has been selected as the Rh level setting (humidity setting, Section 3.7).

The setpoint for CO sen with the + and – buttons.

The adjustment interval for humidity and carbon dioxide adjustments is selected with the + and – buttons. The adjustment interval refers to minutes.

The desired cell bypass temperature

is selected with the + and – buttons. If

outdoor temperature is lower than cell bypass temperature, the summer/winter damper is in the winter position.

The mode of operation of the switch (either ﬁreplace or booster switch) is selected with the + and – buttons.

The address of the control panel is changed with the + and – buttons. Two control panels cannot have the same

address. If control panels have the

same address, they go to bus fault state and do not work.

The contrast setting for the control panel display is changed with the + and – buttons.

adjustment is cho-

3.15 Restoring factory settings

Factory settings see manual

3.16 Choosing cascade adjustment for supply air temperature

Cascade adjust off

3.17 Choosing post-heating for the unit

Radiator type Electric rad.

3.18 Choosing additional heater for unit

Extraheater type MLV radiator

3.19 MLV additional heater setpoint

MLV winter temp 0C

3.20 Choosing melting mode

Defrost mode fan stop

3.21 Winter parameter A

Winterparam. A

Increasing the value decreases the freezing of the HR cell. The unit operates optimally on the factory settings. There is no need to adjust this setpoint except in extreme problem situations, and even then it is advisable to contact Vallox Maintenance. The adjustment is made with the + and – buttons. See the table for the factory setting.

3.22 Winter parameter B

Winterparam. B

Decreasing the value decreases the freezing of the HR cell. The unit operates optimally on the factory settings. There is no need to adjust this setpoint except in extreme problem situations, and even then it is advisable to contact Vallox Maintenance. The adjustment is made with the + and – buttons. See the table for the factory setting.

3.23 Setting base fan speed

MIN speed 1

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The general factory settings can be restored by pressing the + and – buttons simultaneously. Remember to ensure that the setpoints are in accordance with the factory settings for this unit.

Cascade adjustment is chosen to be on or off with the + and – buttons.

A water or electric radiator is selected with the + and – buttons, depending on the type of post-heating radiator the unit is equipped with.

Note! Choosing the wrong type of post-heating may cause a faulty postheating function.

An electric or MLV radiator is chosen according to ventilation unit type with the + and – buttons.

Changing MLV radiator setpoint. When outdoor air temperature goes below this setpoint, the ventilation unit starts the

MLV pump. If a message “Preheating

not in use” is displayed, no setpoint is in use.

Choose one of the two modes of melting to be used in the unit. Melting is done either by stopping the supply air fan or by bypassing the HR cell. This setting must not be changed.

The winter function of the unit is adjusted from the menu when it is not too cold outside (warmer than –15 °C). Decreasing the value of the parameter increases the freezing of the HR cell.

The winter function of the unit is adjusted from the menu in very cold weat-

her (colder than –15 °C). Increasing

the value of the parameter increases the freezing of the HR cell.

The desired base fan speed (minimum fan speed) is chosen with the + and – buttons. Active when week-clock control is not on. Week-clock control changes this speed.

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3.24 Choosing maximum fan speed

MAX speed 8

3.25 Mode of operation of maximum speed setting

MAX speed limit with adjustments

3.26 Adjusting fan on the supply air side

DC fan, supply 100%

The desired maximum fan speed is selected with the + and – buttons. Maximum fan speed is on either with adjustments or always. See Section

3.25. Mode of operation of maximum speed setting.

The maximum fan speed setting can be selected to be active either only in connection with (carbon dioxide and humidity) sensor adjustments or permanently. The selection is done with the + and – buttons.

The desired adjustment value for the supply air fan is selected with the + and – buttons. The rotation speed of the supply air fan can be decreased by decreasing the percentage.

OPERATING INSTRUCTIONS FOR CONTROL PANEL

4. Week-clock control

4.1 Week programme programming

The week programme can be used to set the desired fan speed (base fan speed) and supply air temperature for each hour of the day on seven days a week. The week programme overrides manual adjustments.

Carbon dioxide and humidity adjustment can increase fan speed but never decrease it below the base fan speed set in the week programme.

Example: Monday

It is the intention to decrease fan speed to speed 2 and supply air tempera-

ture to 17 ºC between 07:00 (7 a.m.) and 16:00 (4 p.m.). After that, fan speed is raised to speed 4 and supply air temperature to 20 ºC. For the evening, fan speed is boosted to speed 6 between 19:00 and 21:00 (7 p.m. and 9 p.m.), after which fan speed is lowered back to 4.

STARTING POINT

d hr sp tmp 1 0 N N Exit

Cursor D Day 1…7

1 = Monday, 2 = Tuesday etc. H Hour

0…23 Sp. Fan speed

1…8 Temp Supply air temperature

10…30°C Exit Save the setting and exit N No change to previous hour setting

d hr sp tmp 1 7 2 17 Exit

d hr sp tmp 1 16 4 20 Exit

d hr sp tmp 1 19 6 N Exit

d hr sp tmp 1 21 4 N Exit

Similar changes have to be made separately for each day. Finally, exit the

programming mode by selecting Exit. If you wish, you can erase the week

programme as indicated in Section 3.6. You can then start programming from the start. You can see the settings programmed by choosing a day and by scrolling the hours with the + or – button.

Move the cursor with the arrow keys and change values with the + and – buttons. Note that to exit and save when the programming is ﬁ nished, move the cursor below the word Exit and press + or –.

Changes in fan speed (Sp.) and supply air temperature (Temp.) are only made for the hours desired; in other cases, use N (no change to previous).

Monday (D=1), 07:00 (H=7), fan speed 2 (Sp. = 2), supply air temperature 17 °C (Temp =17).

Move the cursor to the following hour. Monday (D=1), 16:00 (H=16), fan

speed 4 (Sp. = 4), supply air temperature 20 °C (Temp =20).

Move the cursor to the following hour. Monday (D=1), 19:00 (H=19), fan

speed 6 (Sp.=6), supply air temperature no change (Temp=N).

Move the cursor to the following hour. Monday (D=1), 21:00 (H=21), fan

speed 4 (Sp.=4), supply air temperature no change (Temp=N).

Move the cursor to the following hour.

3.27 Adjusting fan on the extract air side

DC fan, exhaust 100%

3.28 Fan speed level adjustment

Speed 1 level 15%

If for instance speed 3 is 30%, speed 2 cannot be increased to more

than 29% and speed 4 cannot be decreased below 31%. The fan stops when the setpoint is 14% or lower. The adjustment is made

with the + and – buttons. There are 8 displays, one for each fan step.

3.29 Moving to Operating menu

To Main menu press + and –

4.2 Adjusting time

day hour min 1 15 30 Exit

Cursor D Day 1…7

1 = Monday, 2 = Tuesday etc. H Hour, 0…23 M Minutes, 0…60 Exit Save the setting and exit

The desired adjustment value for the extract air fan is selected with the + and – buttons.

The rotation speed of the extract air fan can be decreased by decreasing the percentage.

The desired fan speed level is adjusted from the menu. Adjustment range is 0–100%. However, fan speeds limit the adjustment range as follows:

To move back to the Operating menu, press the + and – buttons simultaneously.

Move the cursor with the arrow keys and change values with the + and – buttons. Exit and save when the programming is ﬁ nished.

Monday (D=1), hours 15 (H=15), minutes (M=30)

Time is maintained even though there is a power failure. (See Section 1.1, ﬁ gure items 5 and 6).

5. Factory settings

Base fan speed = 1 Maximum fan speed = 8 Carbon dioxide adjustment (CO Adjustment interval = 10 min Winter parameter A = 9 bars Winter parameter B = 9 bars Mode of melting = stopping of fan Maintenance reminder = 4 months Cell bypass = 12 °C Cascade adjustment = not in use Speed steps:

1. = 31 %

2. = 42 %

3. = 47 %

4. = 54 %

5. = 59 %

6. = 66 %

7. = 72 %

8. = 100 % Humidity level (Rh level) setting = automatic Switch type = ﬁ replace switch

This appliance can be used by children aged from 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children without supervision.

) = 900 ppm CO

What the units include can vary depending on the sales area.

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Vallox

MAINTENANCE INSTRUCTIONS

MAINTENANCE

Before starting maintenance operations

Disconnect the plug of the VALLOX 121 SE unit before starting maintenance operations. When you open the VALLOX 121 SE unit,

the security switch (S) turns voltage off. In spite of this, disconnect the

plug of the unit.

Filters

When the maintenance reminder gives an alarm, the cleanliness of the fans must be checked.

Outdoor air is ﬁltered in the unit with two kinds of ﬁlters. A coarse ﬁlter (A) ﬁlters off insects, heavy pollen and other dust. An F7 class ﬁne ﬁlter (B) ﬁlters off ﬁne dust invisible to the eye. Extract air is ﬁltered with a coarse ﬁlter (C).

By using original Vallox ﬁlters you ensure good operation of the ventilation unit and the best ﬁltering result. The replacement interval

of lters depends on dust content in ambient air. It is recommended to

replace fans in spring and autumn, but at least once a year.

A C

Heat recovery cell

Check the cleanliness of the heat recovery cell D at one-year intervals. NOTE! The laminas of the cell are very thin and get easily damaged.

The correct way of removing the cell is to put your hands behind

the cell and slowly pull it off. If the cell is dirty, soak it in a solution

of water and washing-up liquid. Rinse the cell clean with a jet of water. When all the water has drained from between the laminas, the cell can be remounted to the unit. Before mounting check the

seals. Check that the seal does not start “rolling” with the cell when

you push the cell in place.

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Fans

Check the cleanliness of the fans when carrying out maintenance for a ﬁlter and the heat recovery cell. Clean the fans if needed. The fans can be removed from the unit for cleaning. The fan blades can be cleaned with compressed air or with a brush. Do not remove or move the balancing pieces on the fan blade.

Removing supply fan (T)

Before removing the supply fan, remove the HR cell (D) by pulling carefully. Place a thin sheet board or paper under the fan in order to prevent the bottom tank from being scratched when removing the

fan. Unfasten the xing screw of the fan (H, hex socket head cap

screw AV 4 mm) and place the fan on the bottom tank. Rotate the fan (R model anticlockwise, L model clockwise) and slide the fan along

the bottom tank. Unfasten the quick couplings of the fan wires and lift

the fan off. Check that the collar rubber is in place before mounting the fan back in place.

Removing extract air fan (E)

Before removing the extract air fan take out the coarse ﬁlter (C), ﬁne ﬁlter (B) and HR cell (D) by carefully pulling them and remove the maintenance door (F), ﬁxed with two screws. Place a thin sheet board or paper under the fan in order to prevent the bottom tank

from being scratched when removing the fan. Unfasten the xing

screw of the fan (H, hex socket-head cap screw AV 4 mm) and place the fan on the bottom tank. Rotate the fan (R model anticlockwise, L

model clockwise) and slide the fan along the bottom tank. Unfasten

the quick couplings of the fan wires and lift the fan off. Check that the collar rubber is in place before mounting the fan back in place.

Condensing water outlet

During the heating season, humidity of extract air condenses into condensing water. Water formation may be abundant in new buildings or if ventilation is low compared to the humidity build-up caused by the residents. Condensing water needs to ﬂow out from

the ventilation unit without hindrance. In carrying out maintenance,

for instance in autumn before the beginning of the heating season, make sure that the condensing water outlet (L) in the bottom tank is not clogged. You can check it by pouring a little water in the tank. Clean if needed. Do not let water ﬂow into electrical devices.

Replacing post-heating radiator

First remove the HR cell (D) from the unit by pulling it carefully. Remove the NTC sensor from the cover lid (C) by pulling. Open the fastening screws of the cover lid (C) and remove the lid. Open the fastening screw (G) of the post-heating radiator, lift the postheating radiator out of its holder and take it out through the cover lid. Assembling takes place in the opposite order.

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Troubleshooting

Symptom Cause Do this

Outdoor air coming to the

dwelling is cold.

The maintenance reminder

) is displayed

symbol ( and the unit operates otherwise normally.

“Exh air sensor faulty” message is displayed and the unit is stopped.

“Sup. air sensor faulty” message is displayed and the unit is stopped.

“Ind. air sensor faulty” message is displayed and the unit is stopped.

“Out. air sensor faulty” message is displayed and the unit is stopped.

“Cell sensor faulty” message is displayed and the unit is stopped.

"Bus fault" message is displayed and the unit operates at speed 1 (check the fan speed).

“Freezing alert” message is displayed and the unit is stopped.

The desired automatic adjustment does not stay on.

The fans are not running and no indicator light is lit at the control panel.

The unit does not obey the control panel.

“Carbon dioxide alarm” message is displayed and the unit is stopped.

• Air cools down in the attic ducts.

• The heat recovery cell is frozen, which is why extract air

cannot heat outdoor air.

• The post-heating radiator does not work.

• The extract air lter or cell is clogged.

• The initial adjustment of ventilation has not been done.

• The maintenance reminder lights up the maintenance

reminder symbol in the main display of the control panel at an interval of circa 4 months (factory setting).

• You may change the interval (see the operating instructions

for control panel, Section 3.2).

• There is a fault in the freezing protection sensor. • Contact a maintenance company. Sensor mounting needs to be

• There is a fault in the supply air sensor. • Contact a maintenance company. Sensor mounting needs to be

• There is a fault in the extract air sensor. • Contact a maintenance company. Sensor mounting needs to be

• There is a fault in the outdoor air sensor. • Contact a maintenance company. Sensor mounting needs to be

• There is a fault in the sensor of the heat recovery cell. • Contact a maintenance company. Sensor mounting needs to be

• Wiring fault in the carbon dioxide sensor, in the control

panel or in the humidity sensor, or the cable is of the wrong type.

• Antifreeze of the water-circulating radiator is active. NOTE! If there is no non-freezing solution in the water of

the radiator, the radiator is at risk of freezing.

(Does not apply to the Vallox 121 SE unit)

• There is a fault in the humidity or carbon dioxide sensor.

One of the sensors is broken or missing.

• Door switch may be broken or the door is not quite closed.

• The unit is out of power, for instance because a fuse has

blown.

• The glass tube fuse (located in the control card behind a

protecting plate) protecting the electronics inside the unit may have blown.

• Carbon dioxide alarm. Carbon dioxide content has

exceeded 5000 PPM for two minutes. May be caused by for instance a ﬁre.

MAINTENANCE INSTRUCTIONS

• Check the insulation of the attic ducts.

• Check the cleanliness of the lters and heat recovery cell.

• Check the cleanliness of the lters and the unit. If needed, clean or

replace the ﬁlters. Also check the external grille.

• Reset the maintenance reminder symbol (see the operating

instructions for control panel, Section 3.1.).

checked and the sensor has to be replaced if necessary.

checked and corrected if necessary.

• Contact a maintenance company. The connections have to be

checked and corrected if necessary.

• Immediately troubleshoot the situation. Consult a maintenance

company to ﬁnd out if there is any non-freezing solution in the radiator. Check if the circulation pump is broken, the boiler out of operation etc. The situation may pass by itself as soon as supply air temperature exceeds 10 degrees, but do not wait till it happens.

• Contact a maintenance company. Sensor mounting and connections

have to be checked. (Sensors are options.)

• Check the door switch and fuses. The unit has a T800 mA glass-tube

fuse.

• If needed, contact a maintenance company (for instance to check

the glass tube fuse).

• Disconnect the plug of the unit from the wall socket, wait for 30 seconds and put the plug back. If this does not help, contact a

maintenance company.

• If there is a re, take the necessary steps.

• You can make the unit operational by disconnecting the plug from

the wall socket, waiting for 30 seconds and putting the plug back.

Filter guard symbol

) is displayed and the

( unit operates otherwise normally.

• The pressure in the lter guard (pressure difference switch)

has risen above the adjustment value or speed is 7 or 8 (option).

• Check the cleanliness of the lters and the unit. If needed, clean or

replace the ﬁlters. Also check the external grille.

What the units include can vary depending on the sales area.

Page 9

Vallox

TECHNICAL DATA

Dimensions and duct outlets Measuring points

Measuring points after the connection outlet. Fan curves indicate the total pressure available for duct losses.

70 mm installation space

Model R in the ﬁgure

Supply/extract air ﬂows

E = Extract air fan S = Supply air fan

300

SFP, kW / (m/s) 2.5

250

Model: R

Model: L

200

150

100

Pressure loss in ducts. Total pressure.

10 20 30 50 60 70 80 100 110

Supply air

Input power (total) (W)

SFP =

Air ﬂow (max.) (dm

Input powers of fans

Fan

speeds

Extract air

1 28 21 2 35 32 3 46 44 4 59 63 5 71 82 6 78 110 7 83 137

/s)

SFP, kW / (m/s) 1.5

40 90

Volume ﬂow rate

8 106 224

SFP (Speciﬁc Fan Power) recommended value <2,5 (kW m3/s) At a lower total pressure, SFP will be smaller at this speed.

Extract

air ﬂow

(l/s)

121

Combined input

power of fans

Recommended operating range

dm3/s

Sound values

Duct outlets

Inner diameter of female outlet collar 125

1. Supply air to the dwelling

2. Extract air from the dwelling to the unit

Adjustment position

Air ﬂow dm3/s

Medium frequency of the octave band Hz

1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8

25.7 41.5 51.0 53.9 58.8 75.6 78.8 101.0 29.5 41.3 43.8 51.9 60.8 70.7 75.3 96.0

63 69 73 76 77 80 82 83 45 52 58 61 63 66 68 72

55 60 63 67 70 71 74 78 46 51 54 57 60 62 64 69

125

42 49 52 55 57 61 63 67 33 40 43 47 49 51 53 58

250

45 51 53 55 58 60 62 67 32 36 38 41 44 47 48 52

500

42 49 52 54 56 59 60 63 25 30 33 35 38 40 41 45

1000

36 44 49 52 55 59 60 65 13 21 24 28 31 34 36 40

2000

23 34 39 42 45 49 51 56 * * 10 13 17 21 23 28

4000

* 25 31 36 40 44 47 53 * * * * * * * 16

8000

,dB

64 70 73 77 78 80 83 85 49 55 60 63 65 68 70 74

, dB(A)

47 53 57 59 62 65 66 71 35 40 42 46 48 50 52 57

Sound pressure level dB (A) coming from the unit through the envelope

3. Outdoor air to the unit

4. Exhaust air out

1 2 3 4 5 6 7 8

30/30 41/41 49/47 55/55 64/63 72/71 80/78 100/96

LpA, dB (A) 26 31 34 36 39 41 43 47

Sound power level in supply air duct

(one duct) by octave band L

ADJUSTMENT POSITION/AIR FLOW dm

in the rooms where the unit has been installed

sound absorption)

(10m

ADJUSTMENT POSITION/AIR FLOW dm3/s

, dB

/s ADJUSTMENT POSITION/AIR FLOW dm3/s

Sound power level in extract air duct

(one duct) by octave band LW, dB

Vallox 121 SE

Page 10

Vallox

121

Internal electrical connection Vallox 121 SE (code A3560)

PWM

GND

130°C

90°C

TECHNICAL DATA

S Supply air fan E Extract air fan M1 Autotransformer with

protective voltage coil

230VAC/16VAC L Earthed cord HK Maintenance switch T1 Heating radiator safety

thermostat 130 °C (reset,

switch the unit off) T2 Overheat protection 90 °C

(automatic reset) R2 Post-heating radiator M Damper motor 24 VAC

Wire colours s = blue m = black r = brown va = white vi = green p = red h = grey kv = yellow-green

S PRESSURE SWITCH

S REMOTE MONITORING

S FIREPLACE SWITCH

Outdoor air to the unit

+1 2 S S -

FIREPLACE SWITCH

FAN CONTROL

%RH1 %RH2

Supply air to the dwelling

Supply air from cell

3184600

0-10V DC

12x0.25mm²

blue/red switch

FAULT SIGNAL

RS-485 BUS

A B - + M S + S +

connection box (on top of the unit)

S FAULT SIGNAL S FAULT SIGNAL

Extract air

Exhaust air

S RH1 S RH2

PWM2 PWM1

NC NO

N L

B A +

GND

FUSE

MOLEX CONNECTOR

S E

0 V

16 V

230 V

What the units include can vary depending on the sales area.

7023500 2011-11-17 JK

Page 11

Vallox

TECHNICAL DATA

External electrical connection Vallox 121 SE

(code A3560)

NOMAK 2x2x0,5+0,5

0...10VDC

REMOTE MONITORING SHORT-CIRCUIT WIRE HAS TO BE REMOVED BEFORE CONNECTION

FIREPLACE SWITCH Button switch (self-resetting contact)

NOTE! Faulty connection of the + wire DESTROYS CONTROL PANEL

CONTROL PANEL 1 ONE OR MORE 1 INCLUDED AS STANDARD

2x0.5

NOTE! Faulty connection of the + wire DESTROYS THE SENSOR

ONE OR MORE OPTION

THE FIRST HUMIDITY SENSOR IS CONNECTED TO REPLACE RESISTOR R6k8

HUMIDITY SENSOR %RH1 OPTION

2x0.5

SENSOR 1

121

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

HUMIDITY SENSOR %RH2 OPTION

2x0.5

2. TWISTED PAIR

1. TWISTED PAIR

FAULT SIGNAL

MAX. 1A, 24VDC

(POTENTIAL-FREE CONTACTS)

GND

%RH1

MS+S+

CONNECTION BOX IS SITUATED ON TOP OF THE UNIT

FAULT SIGNAL

RS-485 BUS

B-+

FIREPLACE SWITCH FAN CONTROL

Mounting, removing and wiring of the 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 or another control panel. (See External electrical connection, page 8.)

Control panel addresses

If two or more control panels are connected to the system, the addresses

of the control panels need to be changed.

For example 3 control panels

• Connect the  rst 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

0-20mA

0-10V DC

%RH2

CONNECTION BOX INSIDE THE UNIT

Width 90 mm Height 110 mm Depth 23 mm

PLUG CONNECTION 10 A

1.2 m ON TOP OF THE UNIT

7010101

2011-09-12 pl

Page 12

Vallox

121

Mounting

VALLOX 121 SE is mounted on the wall with a mounting plate as shown in the adjacent ﬁgure.

Wall mounting

VALLOX 121 SE is mounted in a place where temperature does not go below +10 °C. Without protective enclosure, the unit must be located in a place with no acoustic disturbance, such as storerooms or technical rooms.

VALLOX 121 SE can also be located in a damp room, but not in a bathroom next to a sauna bath.

Wall construction

The weight of the unit (60 kg) has to be taken into account when mounting the wall bracket on the wall structure. Avoid mounting the unit on a hollow, echoing dividing wall and on a bedroom wall because of sound conduction, or prevent sound conduction.

Bottom edge of wall bracket

Room required by VALLOX Silent Klick water seal.

Wall mounting plate

162

During mounting, the unit rises 10 mm higher than the ﬁnal height.

Bottom edge of wall bracket

Wall mounting plate

3030

20 60

ø7 14

pcs

550

Electrical connections

The unit has a plug connection. The connection box of the unit is located loosely upon the unit and can be moved to another place as desired.

Duct connections of unit

The unit is equipped with two Ø125-mm collars. Necessary connecting pieces (such as inner or bent connector) can be attached to the collar. NOTE! The connecting head of the connecting piece must not be inserted into the collar by more than 30 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 of the unit are located in the door below the latch. 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 air volume tables show volume ﬂow rates at various adjustment positions. The red measurement hoses are intended for measuring the supply air ductwork and the black measurement hoses for measuring the extract air ductwork.

Condensing water connections

The delivery includes a Silent Kick water seal. By connecting a pipe to the water seal the water condensing from extract air can be led to a ﬂoor drain (not directly to the drain). Silent Klick water seal prevents the sound caused by water as the water seal dries up. The pipe must not rise after the water seal. The condensation water discharge outlet is located at the rear edge in the middle of the unit. Because of this the unit has to be mounted horizontally level.

1.09.413E/14.5.2013/PDF

What the units include can vary depending on the sales area.