SystemAir Topvex SF02-S12 Operation And Maintenance

Topvex SF02-S12
Air Handling Unit

Operation and Maintenance Instructions

Document in original language | 130323 · A002

GB

© Copyright Systemair AB
All rights reserved
E&OE

Systemair AB reserves the rights to alter their products without notice.
This also applies to products already ordered, as long as it does not affect the previously agreed specifications.

130323 | A002

1 Warnings. .. ....... .... ..... .... ..... .... ..... .... ......... .... .1

2 Product description .... ..... .... ......... .... ..... .... ..... ..2

2.1 Internal components .... .... ..... .... ..... .... .... .2

2.2 Description internal components... .... ..... .... 2

2.2.1 Fan ..... ..... .... ..... .... ......... .... .....2

2.2.2 Supply air filter ..... ..... .... ......... ...2

2.2.3 Pressure guard filters ........ .... ..... .2

2.2.4 Temperature sensor. ..... .... ..... .... .2

2.3 Heating battery.. .... ......... .... ..... .... ..... .... .3

2.3.1 Water heating battery . ..... .... .......3

2.3.2 Electrical heater . .... ..... .... ......... ..3

2.4 Electrical connection box,

components. ..... .... ......... .... ..... .... ..... .... .4

3 Interface description .......... .... ..... .... .... . .... .... ....4

3.1 Control panel... .... ..... .... ......... .... ..... .... ...4

3.1.1 Operating the control

panel... .... ......... .... ..... .... .... . .... .5

4 Commissioning .... ......... .... ..... .... ..... .... ......... ...6

4.1 Before starting the system .... ..... .... ..... .... .6

4.2 Initial setup of the unit.... ......... .... ..... .... ...6

4.3 Menu overview ... ..... .... ......... .... ..... .... ...8

4.4 Temperature control possibilities ..... .... ....16

4.5 Free cooling .... . .... .... ..... .... ..... .... ..... .... 17

5 Maintenance.... .... ..... .... ......... .... ..... .... ..... .... 17

5.1 Changing air filters.... .... ..... .... ..... .... ...... 18

5.2 Checking the fan . .... ..... .... ......... .... ..... .. 19

5.3 Cleaning louvers and diffusers.. .... . .... .... .. 19

5.4 Checking the outdoor air intake .... . .... .... .. 19

5.5 Checking the duct system ... .... ..... .... ...... 19

5.6 Changing the internal battery... ..... .... ...... 20

6 Troubleshooting.. ......... .... ..... .... ..... .... ..... .... .. 21

6.1 Alarms... ......... .... ..... .... ..... .... ......... .... 22

7 Service .. ..... .... ..... .... ......... ......... .... ..... .... ....22

Contents

130323 | A002

1 Warnings

The following admonitions will be presented in the different sections of the document:

Danger

• Indicates a potentially or imminently hazardous situation which, if not avoided, could result in death or
serious injury.

Warning

• Indicates a potentially hazardous situation that may result in minor or moderate injuries.

Caution

• Indicates a risk of damaging the product or prevent optimal operation.

Important

• 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.

Warnings

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1

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| Product description

2

2 Product description

2.1 Internal components

1

2

3

4
5

6

7
8

9

Filter, supply air

Fan, supply air

Heater, electrical or water

Electrical connection box
Pressure guard filter

Air flow sensor (only EL units)

Outdoor air sensor
Duct connection, outdoor air

Duct connection, supply air

2.2 Description internal components

2.2.1 Fan

The fan has external rotor motors of EC type which are steplessly controlled. It is possible to program the speed in 2
steps (normal/reduced) depending on the programming of the week schedule. The motor bearings are life time lubri­cated and maintenance free. It is possible to remove the fan for cleaning

2.2.2 Supply air filter

The filter is of bag filter type with filter quality ePM10 60% (M5). The filter need to be replaced when polluted. New fil­ter can be acquired from your installer or wholesaler.

2.2.3 Pressure guard filters

A pressure guard measures the differential pressure over the supply air filter. When the pressure drop reaches the set
value an alarm is triggered in the main regulator. The differential pressure can be set between 40 and 300 Pa. The pres­sure switch is preset from factory to 240 Pa.

2.2.4 Temperature sensor

In Topvex SF the supply air sensor is delivered with the unit and is to be installed in the supply air duct externally from
the unit. See Installation instructions for more detailed information.

The outdoor air sensor is mounted and wired inside the unit.

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Product description |

2.3 Heating battery

Warning

• Although the mains power supply to the unit has been disconnected there is still risk for injury due to
rotating parts that have not come to a complete standstill.

• Beware of sharp edges during maintenance. Use protective clothing.

• Observe that the heating battery can be hot although the power is switched of. Risk of burning.

2.3.1 Water heating battery

In units with built in water heating battery the hot water coil is located next to the supply air connection. The hot water
coil can be either HWL (hot water coil, low power) or HWH (hot water coil, high power). The coil material is copper pip­ing with a frame of galvanized sheet steel and aluminium fins. The coil is equipped with venting and immersion sensor
for frost protection.

2.3.2 Electrical heater

In units with built in electrical heater the heating rods are located after the supply air fan in the airflow direction. The
material is stainless steel. The electric heating coil has both automatic and manual overheating protection.

The manual overheat protection is reset by pressing the button, marked RESET figure 1. The power demand of the elec­trical heating coil is controlled by the main regulator.

3

The main regulator controls the heat steplessly by a TTC triac control according to the desired supply/extract or room
air temperature that is set in the control panel.

Topvex SF units equipped with Electrical heater performs 3 minutes of re-cooling after the unit have been turned of.

Note:

• If activating the fire alarm when the heater is switched on, the fan stops immediate without re-cooling,
this can cause the overheating protection to trip. See figure 1 where to reset.

• Reset of the overheat protection must be done by an authorized electrician.

• An all pole circuit breaker (safety switch) must precede the unit.

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| Interface description

4

2.4 Electrical connection box, components

Danger

• Make sure that the mains power supply to the unit is disconnected before performing any maintenance
or electrical work!

• All electrical connections must be carried out by an authorized installer and in accordance with local rules
and regulations.

Caution

Be careful so the hatch doesn’t fall down if the unit is false ceiling mounted.

Topvex SF is equipped with a built in regulator and internal wiring.

Loosen the 4 screws to remove the hatch to the electrical connection box.

Fig. 1 Connection box

Position Description

1

2

3

4

5

6

7
8

Regulator E283 WEB

Transformer 230/24V AC

Terminals for internal and external components

Terminals for internal wiring

Terminals for mains power supply to the unit

Contactor (K2) On/Off Pump control water (HW units only, not present in EL-units)

Automatic fuse
Reset for overheat protection (only EL units)

3 Interface description

3.1 Control panel

The SCP control panel is delivered with a 10 m cable (up to 100 m can be used) that is connected to the panel and with
a fast coupling contact, connected to the Topvex unit. The contact is connected to the Corrigo controller in the electrical
connection box. The cable can be unscrewed in the back of the control panel (figure 2).

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3.1.1 Operating the control panel

Fig. 2 The control panel

Interface description |

5

Position

1
2

3

4

5

6

7

8
9

10

11
12

Explanation

Alarm button: Gives access to the alarm list.
Alarm LED: Indicates alarm by flashing red light.

Write LED: Indicates by flashing yellow light that parameters can be set or changed.

OK button: Press this button to be able to change or set parameters whenever possible. Also used to
move between changeable parameters in one dialogue window frame.

Cancel button: Used to abort a change and return to the initial setting.

Right/Left & Up/Down buttons: Used to move up, down, left & right in the menu tree. Up/Down buttons
are also used to increase or decrease values when setting or changing parameters.

Mounting holes.

Connection block.
Connection to brown cable.
Connection to yellow cable.

Connection to white cable.
Connection to black cable.

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Commissioning

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6

4 Commissioning

4.1 Before starting the system

When the installation is finished, check that:

• The unit is installed in accordance with the installation instructions

• The unit is correctly wired

• Mufflers are installed and that the duct system is correctly connected to the unit

• Outdoor air intake is positioned with sufficient distance to pollution sources (kitchen ventilator exhaust, central vac­uum system exhaust or similar)

• All external equipment are connected

• The following data is available:

• Intended configuration, for example temperature control functions, fan control, external control functions etc.

• How the unit is supposed to operate according to a weekly schedule (normal and reduced speed)

4.2 Initial setup of the unit

On the first start-up, the controller will start a special program for setting language, supply air temp set point, Time &
date and week schedule for normal speed. Use the “OK” button to move between changeable parameters and the UP/
DOWN arrows to see the displayed alternatives. Confirm by pressing “OK” once more. Move on down in the menu
structure by use of the UP/DOWN arrows.

The following will be displayed:

1 Select language by pressing “OK” and then move be-

tween the alternatives with the UP/DOWN buttons.
Confirm by pressing “OK”. Move to the next level by
pressing the “DOWN” button.

2 Set the supply air set point. Default is 18°C (logon to

service level needed, code 2222, to change default
setting)

3 Check and make sure that correct time and date is dis-

played, if not change the settings

4 Set the week schedule for how it’s intended for the

unit to operate at normal speed during Monday to Fri­day. It’s possible to set 2 periods per day.

5 Set the week schedule for how it’s intended for the

unit to operate at normal speed during Saturdays and
holidays. It’s possible to set 2 periods per day.

Choose Language
English

Supply air temp

Actual:.... ºC

Setp.: 18 ºC

Time: 12.46
Date: 2010–03–12
Weekday: Friday

Normal speed
Monday → Friday
Per 1: 07:00 – 16:00
Per 2: 00:00 – 00:00

Normal speed
Saturday → Holiday
Per 1: 07:00 – 16:00
Per 2: 00:00 – 00:00

6 Set the week schedule for how it’s intended for the

unit to operate at reduced speed during Monday to
Friday. It’s possible to set 2 periods per day. Normal
speed inactivates reduced speed.

7 Set the week schedule for how it’s intended for the

unit to operate at reduced speed during Saturdays
and holidays. It’s possible to set 2 periods per day.

Reduced speed
Monday → Friday
Per 1: 00:00 – 24:00
Per 2: 00:00 – 00:00

Reduced speed
Saturday → Holiday
Per 1: 00:00 – 24:00
Per 2: 00:00 – 00:00

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Commissioning

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7

8 Select “Yes” or “No”

After finishing the setup the menu system for “Operator level” will be available.

See below menu overviews that display the available menus in the Operator level followed by the “Service level”
manual.

To enter Service level use code 2222 in the “Access rights” menu. For operator level use code 1111.

To enter Administrator level use code 3333 in the “Configuration menu”.

End Wizard
No

Note:

To perform more advanced settings please see the separate “General Commissioning Record” on www.
systemair.com, online catalogue

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Commissioning

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8

4.3 Menu overview

Below menu overview shows both the Operator, Service and Administrator level. The overview of the parts unique to
the levels in below table are marked with different background color.

Note:

See Corrigo manual-Ventilation application for more information and additional configuration alternatives.

To logon to Operator
level use code 1111
under Access
rights.

Main menu item

Topvex SF03 HW
2015–03–15 09:00
System:Normal run
Sp:22.0 Act: ºC

→ Running mode → Running mode Running mode

To logon to Service
level use code 2222
under Access
rights.

Sub-menu item 1 Sub-menu item 2 Explanations

Auto

Op time
SAF: 0.0 h

→ Selected
functions

→ Alarm events

→Input/Output

Control function
Supply air control
Fan control
Frequency manual
control

Heating: Water
Exchanger: Not
conne
Cooling: Water

Free cool active:No

Support control
Active: No
CO2/VOC active
Never

Fire damper
function
Not active
Operation when
alarm
Stopped

Frost protection
Active
Cooling recovery
No

External set point
Not active

→AI

To logon to
Administrator level
use code 3333 under
Access rights.

Start screen headline
Can be set to 5 different layouts
(Changeable at “Administrator
level” under the Configuration
menu).

Set running mode to Auto,

Manual reduced run, Manual
normal run or Off.

The time in hours that the motors
have been operating
SAF = Supply air fan

Type of air temperature control the
unit is configured for.

Type of fan speed control the unit is
configured for.

Type of heating selected.

Type of exchanger selected.

Type of cooling selected.

Status of the free cooling function.

Status of the support control
function.

Status of the demand ventilation
(CO2/VOC) function.

Status of the fire damper function
when fire alarm is active.

Status of the frost protection
function.

Status of the cooling recovery
function.

Status of the external set point.

Alarm log list along with the time
and date they occurred.
Move down and up in the list by
pressing ↑↓.

Status of the Analogue inputs.

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Commissioning

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9

Main menu item

→Temperature

→Air Control

Sub-menu item 1 Sub-menu item 2 Explanations

Outd temp: ºC
Supply air temp
Act.: ºC→
Setp: 18ºC

→DI

→UI

→AO

→DO

Supply air temp. 18°
C

Neutral zone 0.0 °C

Status of the Digital inputs.

Status of Universal Analogue inputs
or Universal Digital inputs.

Status of the Analogue outputs.

Status of the Digital outputs.

Actual outdoor air temperature.
Actual supply air temperature.

Choose setpoint value.

A neutral zone can be set around
the setpoint value.

Note:

See Corrigo manual­Ventilation application for
more information.

Frost protection
Actual: ºC

Frequency control
manual SAF
Output: %

Frequency control
manual SAF
Output 1/1: 75%
Output 1/2: 50%

Outdoor comp.
output.
–20°C = 0 %
0°C = 0 %
Act. Comp: 0 %

Pressure control
SAF
Actual: Pa
Setp.: Pa

Pressure control
SAF
Setp 1/1: 500 Pa
Setp 1/2: 250 Pa

Outdoor comp.Setp.
1
—20°C = 0 Pa
10°C = 0 Pa
Act. Comp: 0 Pa

Actual water temperature in the
water heating battery. (Only visible

for HW units).

Frequency control manual.
Fans controlled by setting fixed
output signal.

This menu option becomes visible
if the unit is configured for
"Manual frequency”.

The actual external pressure and set
point for the supply air fan.

Only visible if the unit is configured
for "Pressure control" (VAV
accessory).

Set the external pressure set point
for normal speed (1/1) and reduced
speed (1/2) for the supply air fan.

Set the SAF pressure compensation
for the settable outdoor
temperature. The outdoor
compensation is linear and is set
using two parameter pairs which
give the value of the compensation
at two different outdoor
temperatures. The compensation
can be positive or negative.
Shows the actual pressure
compensation.

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10

Commissioning

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Main menu item

→ Time settings

Sub-menu item 1 Sub-menu item 2 Explanations

→ Time/Date

→ Timer Normal

Speed

→ Timer Reduced
Speed

→ Extended
running

→ Holidays Holidays (mm:dd)

Normal Speed
Monday
Per 1: 07:00–16:00
Per 2: 00:00–00:00→
Normal Speed
Monday-Friday
Per 1: 07:00–16:00
Per 2: 00:00–00:00

Reduced speed
Monday
Per 1: 00:00–24:00
Per 2: 00:00–00:00→
Reduced Speed
Monday-Friday
Per 1: 00:00–24:00
Per 2: 00:00–00:00

Extended running
60 min
Time in ext. running
0 min

1:01–01 — 01–02
2:01–01 — 01–01
3:01–01 — 01–01

Set correct time and date.
Set 00:00 - 24:00 for continuous
running. Setting 00:00 - 00:00
inactivates the period (stops the
unit). Normal speed overrides
Reduced speed i.e. Normal speed
07:00 - 16:00 and Reduced speed
00:00 - 24:00 runs the unit on
Normal speed 07:00 - 16:00 and
Reduced speed the rest of the day.

Set week schedule Monday to
Sunday, Monday-Friday+ Holiday
for normal speed. Possible to set 2
periods per day.
Note the settings in the
commissioning record.

Set week schedule Monday to
Sunday, Monday-Friday + Holiday
for reduced speed. Possible to set 2
periods per day.
Note the settings in the
commissioning record.

Set the time for extended running.
Use digital input to force the unit to
start or increase to normal running
even if the actual mode is Off or
Reduced.
If the running time is set to 0 the
unit only runs as long as the digital
input is closed.
The time the extended running is
active is monitored in "Time in ext.
Running".
It's also possible to set a time here
as well in order to shorten the initial
set period.

Set up to 24 separate possible
holiday periods for a full year.
A holiday period can be any number
of consecutive days from one and
upwards.
The dates are in the format: MM:
DD.
When the current date falls within a
holiday period, the scheduler will
use the settings for the weekday
“Holiday”.

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Commissioning

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11

Main menu item

→ Manual/Auto

Sub-menu item 1 Sub-menu item 2 Explanations

In this menu the running mode of all
the configured output signals and a
number of control functions can be
manually controlled.
The supply air controller's output
signal can be manually set
(Manual/Auto) to any value
between 0 and 100%. The
temperature output signals will
change accordingly if they are in
Auto mode. It is also possible to
manually control each of the
temperature output signals
individually.

Since leaving any of the outputs in
manual control will disrupt the
normal control, an alarm will be
generated as soon as any output is
set to a manual mode.

Supply temp.
contr.
Auto
Manual set: 0.0

SAF: Auto
Manual set: 0.0

Heating
Auto
Manual set: 100.0

Cooling
Auto
Manual set: 0.0

Set the supply air temperature
controller to Auto, Manual or Off.
Set the output signal between 0­100%.
The outputs Y1, Y2 and Y3, if in
Auto-mode, will follow the signal
according to the set split values.

Set the output signal for SAF
(supply air fan) to:Auto,

Manual,1/2–speed or 1/1–
speed.

Set the heating to Auto, Manual or
Off.

Set the manual output 0-100%.

Set the cooling to Auto, Manual or

Off

Set the manual output 0-100%

P1–Heating
Auto

P1–Cooling
Auto

Fire damper
Auto

Outdoor air
damper
Auto

Exhaust air
damper
Auto

Note:

Needs to be activated in
order to be visible here

Set the pump control for the
heating coil to Auto, On or Off

Set the pump control for the cooling
coil to Auto, On or Off

Set the Fire damper to Auto, Open
or Close

Note:

Needs to be activated in
order to be visible here
Configuration of fire damper
functions are made at

Administrator level

Set the Outdoor air damper to

Auto, Open or Close

Set the Exhaust air damper to Auto,
Open or Close

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Commissioning

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Main menu item

→ Settings

Sub-menu item 1 Sub-menu item 2 Explanations

Extra sequence Y5
Auto
Manual set: 0.0

Motor control1
Auto
Motor control2
Auto

→ Control temp

Supply air control
P-band: 33.0°C
I-time: 100.0 sec

Set the Extra sequence to Auto,
Manual or Off

Not used in default setting.

Motor control

Note:

See Corrigo manual­Ventilation application for
more information.

In this menu group the settings for
the activated functions are
available. Depending on which
choices have been made in the
configuration menu some of the
possible alternatives may not be
displayed.

Set P-band and I-time for the
Supply air control function

Note:

See Corrigo manual­Ventilation application for
more information.

→ Control

pressure

Shutdown mode
P-band: 100.0°C
I-time: 100.0 sec

→ Frost protection
Active
Setp shutdown:

25.0°C
P-band active: 5.0°
C

Fast stop at frost
protection alarm
Yes

Sequency with frost
protection
Y1–Heating

Pressure control
SAF
P-band: 500.0 m³/h
I-time: 60.0 sec
Min. output: 0%

Set P-band and I-time for the
Shutdown function

Note:

See Corrigo manual­Ventilation application for
more information.

Status for frost protection.
When running mode switched to
"Off".
Shutdown controller will control the
heating output to maintain a
constant settable temperature at
the frost protection sensor for the
hot water coil.
If frost protection temperature falls
below Frost protection Alarm
level + settable P-Band for frost
protection, it will rise the internal
signal and force the heating valve
to open to avoid freeze-up of hot
water coil.

Set the fast stop of the unit in case
of frost protection alarm to Yes or
No.

Frost protection control.
Is available for Y1 heating, Y4
extra sequenceor on both Y1
and Y4.

Set P-band, I-time and Min. output
for the supply air.

Only shown if VAV accessory is
used.

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Commissioning

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13

Main menu item

Darker gray area, log in to
“Administrator level”
code 3333

→ Configuration

Sub-menu item 1 Sub-menu item 2 Explanations

→ Alarm settings → Alarm limits

→ Alarm delays

→ Restore alarm

Restore factory
settings: No
Restore user
settings: No

Save user
settings
No

→

Inputs/Outputs

→

Sensor settings

→

Control function

Fan control Frequency manual

→

Extra sequency Y4

→

Extra sequency Y5

→

Heating

→

Cooling

→

Pump control

Control function
Mode:
Supply air control

Mode extra sequence
Y4
Active w cool recov

P1–Heating
P1–Cooling

Set the alarm limits and allowed
deviations for the different
functions

Set the alarm delays and allowed
deviation delays for the different
functions

Reset the service alarm (filter
alarm).

In this menu, it is possible to restore
all parameters to their factory
settings or to the user settings they
were saved as earlier.
Select Yes or No

The current configuration can be
saved in a separate memory area
and can later be restored using the
previous menu, Restore user
settings. Select Yes or No

Setup for inputs and outputs.

Setup of sensor types and control
range.

Set type of temperature control
function you want the unit to
operate under. Choose between

Supply air control, Outdoor
comp. supply

More information in chapter 4.4

*Set type of fan control function
you want the unit to operate under.
Choose between Pressure

control (option accessory),
Frequency manual.

Can be configured to one of the
following alternatives:

Active, Active with cooling
recovery, Active with
enthalpy control and Active
with both cooling recovery
and enthalpy control.

Extra sequence Y5 can be
configured to Active or Not
active.

Type of heater

Type of cooler

Set parameters for pump control.
If, for any of the control circuits, no
output is configured for pump
control these settings will be
ignored.

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14

Commissioning

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Main menu item

Sub-menu item 1 Sub-menu item 2 Explanations

→ Free cooling Free cool active: No

Outd. temp
activation
22°C

Outd. temp night
High: 18.0°C
Low: 10.0°C
Room temp min. 18°C

Hour for start/stop
Free cooling
Start: 0
Stop: 7

Time to block heat
output after Free
cooling
60 min

Fan output when free
cooling
SAF: 0 %
EAF: 0 %

Outdoor sensor
placed in intake
channel (intake duct)
No

→ Support control Support control

Active: No
EAF running during
Support contr.: Yes

Min. run time for
support ctrl: 60 min

Set free cooling active toYes or No.
Set the lower outdoor day

temperature limit for the activation
of the free cooling function. The
temperature of the previous day
needs to be over the set
temperature in order activate the
free cooling function.

Set the upper outdoor night
temperature limit for the activation
of the free cooling function.
Set the lower outdoor night
temperature limit for the activation
of the free cooling function.
Set the lower room temperature
limit. The temperature needs to be
above this value for the free cooling
function to stay active.
If no room sensor are connected
extract air is valid.

Set the start and stop time for the
free cooling function
For example Start: 0 and

Stop: 6

means that the free cooling
sequence is active between 00.00
and 06.00 h.

Set the delay in minutes from the
time where the free cooling
sequence has stopped until a
possible heating sequence is
initiated, i.e. how long a cooler
room temperature than set
temperature can be accepted

Set the fan speed in percentage of
the normal speed for each fan
individually during the free cooling
sequence

Set if the outdoor sensor is placed
in the intake duct or not.
Choose between No and Yes
Preset is No.

When using the control function
room control or extract air
temperature control, it is possible to
utilize support-heating and/or
support-cooling. Minimum running
time is settable 0…720 minutes
(factory setting 60 minutes).
Choose between “Active: Yes or
No”.
(For start and stop temperatures
see the "Temperature" menu)

Set the minimum running time in
minutes for support control

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Commissioning

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15

Main menu item

Sub-menu item 1 Sub-menu item 2 Explanations

→ CO2/VOC Control CO2/VOC active

Never
Type: Fan
Min. time: 20 min

Activation level
1/2–speed: 800 ppm
1/1–speed: 1000 ppm
diff: 160 ppm

Sequency with CO2
comtrol
Y2 exchanger

→

Fire Function

→

External setpoint

Type of actuator

Motor control Motor control1

Fire damper
function
Not active
Operation when
alarm
Stopped

Fire alarm input
Normally open
Damper exercise

No

External setpoint
Not active
Min setp.: 12.0°C
Max setp.: 30.0°C

Run mode
when unit run (/DI)
Stop delay 120s

Motor control2
Run mode
when unit run (/DI)
Stop delay 0s

In applications with varying
occupancy the fan speeds can be
controlled by the air quality as
measured by a CO2/VOC-sensor.
See Corrigo manual for further
explanation

Set active to Never, Always or If
time channel off.

Set what should be regulated.
Select type Fan
Set the min. time the unit is
activated by the CO2/VOC demand
function

Set the activation level at 1/2
speed
Set the activation level at 1/1
speed
Set allowed diff. value

CO2/VOC control can be used with
mixing dampers.
Select for use on Y2, Y4 or on both
outputs.

The fire alarm input can be
configured as Not active,

Normally closed or Normally
open.

Choose operation when alarm is
active Stopped, Continuous

run, Normal run, Only SAF, or
Only EAF

Fire alarm input can be configured
to normally open or normally
closed.
Fire alarm input is also available to
be configure from digital inputs.
Note the risk of a twice changed
signal can create an undesired
function.
Activate the fire damper exercising,
choose between No, Yes unit
running or Yes unit stopped.
Set the parameters for damper
exercise in the submenu.

An external setpoint device can be
connected. The setpoint device
must follow the PT1000 resistance
curve. The setting range can be
restricted.

Type of control signal for actuators.
Choose between 0-10V, 2-10V, 10­2V, 10-0V.

Settings running conditions external
fan.

130323 | A002

16

Commissioning

|

Main menu item

→ Access rights

Sub-menu item 1 Sub-menu item 2 Explanations

→

Alarm settings

→

Communication

→ Log on Log on

→ Log off Log off?

→ Change password Change password for

Alarm no(1–115): 1
Run Error Supply Air

Function Port1
Slave

→ Function Port2
Slave

TCP/IP

Enter password xxxx
Actual level: None

No
Actual level:None

level:None
New password xxxx

Set functionality and adjust
communication settings Slave,

Expansion unit, Freq conv/
Press tran, External
display, Exp and freq conv or
Exp and ext display.

Log on to service level by entering
a 4-digit code. After reaching the
desired level go back with “LEFT”
arrow (press 2 times) on the control
panel.
Standard code from factory to enter
service level is 2222. Back to
operator level: 1111. To enter
Admin level code: 3333.

Log off from Administrator level by
changing Noto Yes with the "OK"
and "UP/DOWN" buttons
Automatic logoff after 6 minutes of
inactivity.

Set a new password for the level of
your choice.
Can only be done once logged on to
the service level.

4.4 Temperature control possibilities

Type of Control Temperature sensor placement

Supply air temperature control: The supply air temperature sensor is

placed in the supply air duct
approximately 3m after the unit.

Supply air temperature control with
outdoor air temperature
compensation:

Extract air temperature control: 2 temperature sensors are needed.

2 temperature sensors are needed.
The outdoor air sensor is mounted
and wired inside the unit.
The supply air temp sensor is placed
in the supply air duct approximately
3m after the unit.

The extract air temp sensor is placed
in the extract air duct or in the room
if the building lacks extract air
ducting.
The supply air temp sensor is placed
in the supply air duct approximately
3m after the unit.

Description/function

Controls the temperature of the
supply air

Compensates for low outdoor
temperatures by increasing the
supply air temperature with an
optional value to avoid sudden
temperature drops in the interior of
the building. Preset is + 20K
temperature increase at -20°C
outdoor temperature and +15K
increase at 0°C outdoor temperature.

Set the extract air temperature
(preset is +18°C).
To ensure that the supply air
temperature produced by the unit is
not too low or too high, a minimum
and maximum supply air
temperature value can be set by the
installer/operator. Preset minimum
temperature is +12°C and maximum
temperature is +30°C.

130323 | A002

Maintenance

|

4.5 Free cooling

This function is used during the warm period to save energy by using cold outdoor air, e.g. during night time, to cool
down the building.

Note:

The following is only valid if the free cooling function is set to Active in the program menu.
In order for the free cooling function to work, a total of 3 temperature sensors (outdoor, supply and extract/
room) are required.

Free cooling is only activated when the following starting conditions are met.

Starting conditions:

• Less than 4 days have passed since the unit was last in running mode

• The outdoor temperature during the previous running period exceeded a set limit (+22°C)

• It is between 00:00 and 07:00:00 in the day (settable)

• The timer outputs for normal speed, Extended running normal and External stop are Off

• A time channel will be On sometime during the recently started 24 hours.
The unit checks the night temperature (indoor and outdoor temperature) during 3 minutes at the set starting hour when

the fans are started so that the sensors can perform a temperature measurement.

If above conditions are met the free cooling function is started, if not the unit goes back to OFF position.

17

If the outdoor sensor is not located in the outdoor air inlet duct and a room sensor has been selected, the unit will not
start free cooling as long as all the temperatures are not within the start and stop temperature intervals.

Stop conditions:

• Outdoor temp above the set max value (+18°C) or below the set min value (condensation risk, +10°C)

• The room temp/extract air temp is below the set stop value (+18°C)

• One of the timer outputs for normal speed, External stop or Extended running normal is On

• The time has past 07:00:00.
When free cooling is active, the fans run at normal speed or the set value for pressure/flow control and the digital out-

put Free cooling is active. The outputs Y1-Heating and Y3-Cooling are shut down. After free cooling has been activated,
the heating output is blocked for 60 minutes (configurable).

5 Maintenance

Danger

• Make sure that the mains power supply to the unit is disconnected before performing any maintenance
or electrical work!

• All electrical connections must be carried out by an authorized installer and in accordance with local rules
and regulations.

Warning

In order to avoid electrical shock, fire or other damage that might occur in connection with faulty use and
operation of the unit, it is important to consider the following:

• The system must be installed according to the installation instructions.

• Insulate mains power supply before service or cleaning of the heat recovery unit.

• Make sure the filter is mounted in its place before running the system.

• Maintenance must be performed according to the instructions.

130323 | A002

Caution

Make sure that loosened parts during maintenance doesn’t fall down and causing injury.

Maintenance

|

18

5.1 Changing air filters

The bag filter cannot be cleaned and must be changed when necessary. New filters can be ordered from Systemair. Op­eration time between filter changes depends on the air pollution at the installation site. A differential pressure switch
indicates when it’s time to change the filters. This will trigger an alarm in the control panel.

Re-set the alarm after filter change, see Alarm settings, Alarm limits, Service alarm in the Control panel.

Initial pressure drop for Topvex SF02 to Topvex SF03 is approx. 50 Pa and 60 Pa for Topvex SF04 to Topvex SF12.

130323 | A002

Maintenance

|

5.2 Checking the fan

Even if the required maintenance, such as changing of filters is carried out, dust and grease may slowly build up inside
the fan. This will reduce the efficiency.

The fan may be cleaned with a cloth or a soft brush. Do not use water. White spirit can be used to remove accumula­tions which are otherwise difficult to remove. Allow drying properly before use.

The fan can easily be taken out, by removing 4 screws (pos 1) shown in figure 3 and disconnecting the fast couplings
to the electric wires.

19

Fig. 3

5.3 Cleaning louvers and diffusers

Check the louvers and diffusers at least twice a year, and clean if necessary.

The system supplies fresh air to the building via the duct system and diffusers/louvers. Diffusers and louvers are
mounted in ceilings/walls.

Remove diffusers and louvers and wash in hot soapy water as required. (Diffusers/louvers must be put back with their
original settings and positions in order not to unbalance the system).

5.4 Checking the outdoor air intake

Leaves and pollution could plug up the air intake grille and reduce the capacity.

Check the air intake grille at least twice a year, and clean if necessary.

5.5 Checking the duct system

Dust and grease settlements may build up in the duct system even if filters are changed regularly. This will reduce the
efficiency of the installation. The duct runs should therefore be cleaned/changed when necessary.

Steel ducts can be cleaned by pulling a brush soaked in hot soapy water through the duct via diffuser/louver openings
or special inspection hatches in the duct system (if fitted).

Note:

In addition the roof cowl must be checked once a year and cleaned as necessary.

130323 | A002

Maintenance

|

20

5.6 Changing the internal battery

Note:

This procedure requires knowledge of proper ESD protection; i.e. an earthed wristband must be used!

When the alarm ”Internal Battery” is activated and the battery LED lights up red, the battery for backup of program
memory and real-time clock has become too weak. The battery is replaced as described below. A backup capacitor
saves the memory and keeps the clock running for at least 10 minutes after the power supply is removed. Therefore, if
the battery replacement takes less than 10 minutes, there will be no need to reload the program, and the clock will
continue to run normally.

The replacement battery must be of the type CR2032.

1 Remove the cover by pressing down the locking tor-

ques at the edge of the cover using a small screw­driver, and at the same time pulling the edges
outwards.

2 Grip the battery firmly with your fingers and lift it up-

wards until it rises from its holder.
Press the new battery firmly down into place. Note
that to preserve correct polarity, the battery can only
be inserted the “right way round”.

130323 | A002

Troubleshooting |

6 Troubleshooting

Should problems occur, please check or correct the following before contacting your service representative.

Always check if there are any alarms active in the control panel.

1. The fan do not start

• Check that the fuses are not defect.

• Check the settings in the control panel (time, week schedule, auto, manual operating etc.).

• Check if there are any alarm messages.

2. Reduced airflow

• Check the settings of Normal and reduced fan speed.

• Check that the outdoor air damper, if used, opens.

• Change of filter required?

• Cleaning of diffusers/louvers required?

• Cleaning of fan required?

• Is roof unit/air intake clogged?

• Duct system. Check visible duct runs for damage and/or build-up of dust/pollution.

• Check diffuser/louver openings.

3. Cold supply air

• Check set supply air temperature on the control panel.

• Check if overheating thermostat is still alert. If necessary, reset by pressing the button, marked RESET, figure 1).

• Check if the fan thermo switch has tripped, shows as Fan alarm in the control panel. If necessary, reset it.

4. Fluctuating supply air temperature

• Check that the supply air temperature sensor is assembled approximately 3 meters from the heater.

5. Noise/vibrations

• Clean fan impeller.

21

130323 | A002

Service

230/400V 25 A 50Hz

Systemair Sverige AB
Industrivägen 3
SE-73930 Skinnskatteberg
Sweden

4016 W IP23 225kg

Ver. A

Serial. no: 1234/567891-0001/140214

Topvex XXXX

16kW 16kW

www.systemair.com

2 3 4

5

|

22

6.1 Alarms

The alarm button (pos.1, figure 2) opens the alarm queue. When pressing this button active and non-acknowledged
alarms will be displayed in the menu window. The alarm-LED (pos.2, figure 2) is flashing if there are non-acknowledged
alarms and steady if the alarms are still active but have been acknowledged.

If there are multiple alarms, use UP/DOWN to move between them. An alarm can be acknowledged or blocked by using
OK and UP/DOWN. To abort and go back to start menu press cancel and then press LEFT.

7 Service

Before calling your service representative, make a note of the specification and production number from the data plate
on the unit.

1. Item number

2. Production order number

3. Consecutive number

4. Production date

5. Product code (product
specification)

130323 | A002

130323 | A002

Systemair Sverige AB
Industrivägen 3
SE-739 30 Skinnskatteberg, Sweden

Phone [phone]
Fax [phone]

www.systemair.com

Topvex SF02-S12 · Operation and Maintenance Instructions · 130323 · en_GB · 02-10-2018 · A002