Wöhler BC 600 User manual

The measure of technology
Operating Manual
Blower Check
Wöhler BC 600
Order no. 24577 – 2021-09-06

Contents
2
Contents
1General...................................................5
1.1 Information about this operating manual ....... 5
1.2 Symbols used in this operating manual......... 5
1.3 Proper use..................................................... 6
1.4 Country specific features............................... 6
2How it works..........................................7
2.1 Measuring principle ....................................... 7
2.2 Operating the device ..................................... 7
2.3 Multiple device mode..................................... 8
3General safety instructions .................9
3.1 Setup and installation.................................... 9
3.2 Ongoing operation......................................... 9
3.3 Maintenance................................................ 10
3.4 Data security ............................................... 10
3.5 Scope of supply of the standard version ..... 11
3.6 Transport..................................................... 12
3.7 Disposal ...................................................... 12
3.8 Manufacturer's address............................... 12
4Specifications......................................13
4.1 Measurement values................................... 13
4.2 Device data ................................................. 14
4.3 Cloth door panel.......................................... 15
4.4 Clamps (wide) ............................................. 15
4.5 Clamps (narrow).......................................... 15
4.6 Installation frame......................................... 15
4.7 App.............................................................. 15
4.7.1 Supported operating systems...................... 15
4.8 Further information...................................... 16
4.9 Assembly and connections.......................... 17
4.9.1 Blower fan ................................................... 17

General
3
4.9.2 Main switch and power supply connection... 18
4.9.3 Connections – capillary tubes...................... 18
4.9.4 Operating keys............................................. 19
5Preparing building leakage test ........21
5.1 Building preparation to DIN EN 13829......... 21
5.1.1 Method A: Testing a building in use............. 21
5.1.2 Method B: Testing the building envelope for
leaks ............................................................ 21
5.2 Building preparation to ISO 9972................. 22
5.2.1 Method 1: Testing a building in in use ......... 22
5.2.2 Method 2: Testing the building envelope ..... 22
5.2.3 Method 3: Testing the building for a specific
purpose........................................................ 22
6Measurement conditions to DIN EN
13829 /ISO 9972...................................23
6.1 Time of measurement.................................. 23
6.2 Weather conditions ...................................... 23
7Setting up and dismantling the
Wöhler BC 600.....................................25
7.1 Installation ................................................... 25
7.2 Dismantling .................................................. 31
8Operating the Wöhler BC 600 via the
app........................................................33
8.1 Downloading the app................................... 34
8.2 Updating the app ......................................... 34
8.3 Overview of functions .................................. 34
8.4 Customer management ............................... 36
8.4.1 Creating or editing customer files ................ 36
8.4.2 Deleting customer files ................................ 40
8.5 Establishing contact..................................... 41
8.5.1 Measuring with a Wöhler BC 600 ................ 41
8.5.2 Measuring with several Wöhler BC 600
devices ........................................................ 43
8.6 Leakage test ................................................ 44
8.6.1 Leakage test without app............................. 48

Contents
4
8.7Multi-point test............................................. 49
8.7.1 Selecting the measurement method............ 49
8.7.2 Continuing the measurement after a WLAN
connection termination ................................ 64
8.8 Report: Certificate or protocol ..................... 66
8.8.1 Company logo on report.............................. 66
8.8.2Generating a report ..................................... 68
8.9 Import/export data ....................................... 70
8.9.1 Data export (Android and iOS ..................... 71
8.9.2 Data export (Windows)................................ 72
8.9.3 Data import.................................................. 73
9Settings................................................75
9.1 General ....................................................... 75
9.2 Settings: Measuring Procedure ................... 76
9.3 Report ......................................................... 77
10 Maintenance ........................................79
10.1 Maintenance list .......................................... 79
11 Warranty and Service .........................80
11.1 Warranty...................................................... 80
11.2 Service ........................................................ 80
12 Declaration of conformity ..................81
13 Accessories.........................................82

General
5
1 General
1.1 Information about this
operating manual
Read this operating manual carefully. It will enable
you to operate the Wöhler BC 600 safely. Please
keep this operating manual in a safe place for
future reference.
The Wöhler BC 600 must be used only by profes-
sionally trained personnel exclusively for the pur-
pose for which it was designed.
We accept no responsibility for any damage or
loss resulting from any failure to observe this op-
erating manual.
This operating manual is printed on eco-friendly
recycled paper.
1.2 Symbols used in this
operating manual WARNING!
Highlights hazards. Failure to observe this infor-
mation risks injury or death.
CAUTION!
Highlights risks that can lead to damage occurring
to the device or the data files.
NOTE!
Highlights tips and other useful information.

General
6
1.3 Proper use
The Wöhler BC 600 Blower Check is used to de-
tect air leakages as well as to determine the air
tightness of building envelopes to DIN EN 13829 /
ISO 9972.
The device is designed to be used for technical
measurements; it must not be used to provide a
permanent supply of air.
The blower fan is connected to a mobile device
via WLAN (iOS or Android). The blower fan is
controlled using the Wöhler BC 600 app on a mo-
bile device.
In future it will be possible to connect and control
up to four Wöhler BC 600 Blower Check devices
via a single WLAN access point. This cutting edge
functionality will make it possible to carry out
measurements on large buildings using several
devices simultaneously.
Any other use is considered improper use.
1.4 Country specific features
A country code is stored in the BC 600 firmware,
which determines the language and country-
specific requirements for the measurement.
If the Wöhler BC 600 app is started before the
mobile device has ever been connected to a BC
600 fan unit, the app uses the system language of
the mobile device.
If the user connects the app to a Wöhler BC 600,
the app reads its country code and uses it from
this point on. The country code is decisive for:
−the language of the app, the report and the
manual
−the selectable requirements for the meas-
urement.

How it works
7
2 How it works
2.1 Measuring principle
Fig. 1. Air flows–positive pressure
method,
Wöhler BC 600 mounted in the doorway
Fig. 2: Air flows–negative pressure
method,
Wöhler BC 600 mounted in the doorway
The Wöhler BC 600 Blower Check is used to de-
termine the air tightness of building envelopes to
DIN EN 13829 / ISO 9972. To do so, the blower fan
is mounted in a doorway or in a window opening.
The blower fan either blows air into (pressurizes) or
out (depressurizes) of a building until a specified
test differential pressure is established between the
indoors of the building and outdoors. The air infiltra-
tion rate resulting from the leakiness of the building
is calculated referencing s
tandard conditions; this
then represents the leakage when the respective
test pressure is applied.
2.2 Operating the device
The device is operated using the Wöhler BC 600
app, which can be downloaded free of charge to
mobile devices running Android or iOS. It is also
possible to manage and evaluate the measure-
ment data in the app following a test. It is equally
possible to print and/or send a measurement cer-
tificate via the app. That means no operating unit
is required to control the device and no additional
software is required to evaluate the data.
It is also possible to search for leakages without
using the app. To do so, press the operating key
on the blower fan.
The connection between the blower fan and the
mobile device is established via a WLAN network
created by the blower fan.

How it works
8
2.3 Multiple device mode
NOTE!
The multiple device mode is presently not availa-
ble. Future versions of the app will include multiple
device mode functionality.
The Wöhler BC 600 app makes it possible to carry
out a measurement with up to four Wöhler BC 600
devices simultaneously. That makes it possible to
determine the leakage rate of buildings with very
large interior volumes or very leaky buildings
(apartment buildings, gymnasia etc.) without hav-
ing to divide the building into sections. That en-
sures it is possible to avoid disturbing influencing
factors falsifying the results between sets of
measurements. In that case the WLAN network
used is created by an external router. The app
also controls the individual devices during the
measurement process carried out with several
devices.
The app displays the overall results of all of the
devices used. However, the tester is also able to
retrieve the measurement data of the individual
devices to be able to determine characteristics
specific to individual measurement positions.

General safety instructions
9
3 General safety instructions
•The Wöhler BC 600 must be used only by
skilled personnel exclusively for the purpose
for which it was designed.
•
Prevent children gaining access to the device
at all times.
3.1 Setup and installation
•Always visually inspect the device before
using. In particular, the housing, cables and
tubes must not exhibit any signs of damage.
Ensure also that no moisture has ingressed
the blower fan.
•
Make sure the device is stable; use the envis-
aged mounting options where required.
•
Make sure the ventilation slots are open and
remain free of dust to allow the device to be
sufficiently cooled.
•
When connecting the blower fan use only
cables with a grounding connection. Make
sure the conductor cross-sections of any re-
quired extension lead are sufficiently dimen-
sioned.
•
Extinguish any open fires in the test area.
•
When not securely installed the fan must only
be operated at low speeds to prevent the de-
vice tipping over.
3.2 Ongoing operation
•Wear hearing protectors when the fan is oper-
ating at high speeds.
•It is strictly forbidden to operate the device in
wet or damp environments.
•
Listen to the noise the blower fan makes when
starting up. Power down the blower fan at the
main switch and disconnect the power plug if
you hear any unusual noises.
•
People must maintain a safe distance to the
blower fan unit when it is in operation.
Do not under any circumstances insert your
fingers or objects through the fan grilles.

General safety instructions
10
•Make sure there are no restrictions preventing
the flow of conveyed air on the inlet and outlet
sides. There is a risk that hair, clothing and
construction material could be sucked into the
fan. Furthermore, restrictions to the flow of air
can falsify the measurement result.
•
Avoid operating the blower fan at high speeds
for too long without breaks during very warm
weather in particular, as this risks the device
overheating.
•
Always switch off the blower fan and wait for
the fan blades to stop before moving the unit.
Disconnect the power plug to be on the safe
side.
3.3 Maintenance
•Repairs must only be undertaken by trained,
skilled personnel from Wöhler Technik GmbH.
•
Always disconnect the device from the power
supply before cleaning and inspecting.
3.4 Data security
•Protect the data stored in the Wöhler BC 600
app under Customer Management against
unauthorized access by third parties. Make
use of the security technology offered by the
operating system of your mobile device.

General safety instructions
11
3.5 Scope of supply of
the standard version
Device
Basic features
Wöhler BC 600
Blower Check
1 blower fan unit
1 cover to measure
the zero-flow pressure
difference
Telescopic rod
1 connection cable
2.5 m
2 capillary tubes
18 clamps 220 mm
4 clamps 120 mm
Clamps in plastic case
1 fan strap, see Fig.
11
1 lashing belt, see
Fig. 23
1 cloth door panel
1.5 x 2.6 m with fan
strap
1 transport bag
Hexagon socket key to
tighten the clamps of
the telescopic rod

General safety instructions
12
3.6 Transport
WARNING!
It is imperative that the Wöhler BC 600 is switched
off before being moved.
CAUTION!
Do not place the blower with the motor facing
down if it is to be laid flat for transporting or stor-
age purposes; instead, make sure it rests on the
back of the unit.
To avoid damage occurring during transport it is
imperative to transport the device in the transport
bag included in the scope of supply.
3.7 Disposal
Do not dispose of electronic equipment along with
household waste. Dispose of electronic equipment
in accordance with applicable environmental regu-
lations.
3.8 Manufacturer's address
Wöhler Technik GmbH
Wöhler-Platz 1
33181 Bad Wünnenberg
Tel.: [phone]
Fax: [phone]
Email: [e-mail]

Specifications
13
4 Specifications
4.1 Measurement values
Differential pressure
Range
-100 .. 100 Pa
Resolution
0.1 Pa
Accuracy
Max of 0.25 Pa or 1%
of measurement
Air flow rate at 50 Pa (extrapolited)
Range
15 .. 6000 m³/h
Resolution
0.1 m³/h
Accuracy
+/- 5% or 1.5 m³/h
(the respective higher
value applies)
Air temperature
Range
-20 .. 50 °C
Resolution
0.1 °C
Accuracy
+/- 0.5 °C
Absolute pressure
Range
300 .. 1200 hPa
Resolution
0.1 hPa
Accuracy
+/- 3 hPa
Relative humidity
Range
20 .. 80% RH
Resolution
0.1% RH
Accuracy
+/- 5% RH

Specifications
14
4.2 Device data
Power supply
220 … 230V AC,
50 ... 60 Hz
Max. current con-
sumption
6.5 A
Degree of protection
IP 21
Dimensions
(W x H x D)
571 x 726 x 170 mm
Weight
11.4 kg
Interfaces
WLAN (802.11 b/g/n)
with WPA2 encryp-
tion
Connections
Inlet connector, dif-
ferential pressure
tubes
Storage temperature
-20 to 50 °C
Operating temperature
5 to 40 °C
Recommended
calibration interval
Every 2 years

Specifications
15
4.3 Cloth door panel
Dimensions
1.80 m x 2.80 m
Opening to mount
blower fan
Ø 525 mm
4.4 Clamps (wide)
Max. clamping range
220 mm
Weight
0.155 kg
Dimensions
(W x H x D)
220 x 50 x 141 mm
4.5 Clamps (narrow)
Max. clamping range
120 mm
Weight
0.067 kg
Dimensions
(W x H x D)
120 x 48 x 124 mm
4.6 Installation frame
Min. installation
opening (W x H)
0.8 x 0.9 m
Max. installation
opening (W x H)
1.25 x 2.3 m
Weight
12 kg
4.7 App
4.7.1
Supported operating
systems
Android
Version 4.1 and
higher
Windows
Version 10 and high-
er
Apple
Iphone
iOS 9.0 and higher
iPad
iPadOS 9.0 and
higher
MAC
macOS 11.0, see the
following note.

Specifications
16
NOTE!
To install the Wöhler BC 600 app on MAC device,
the 2 following conditions must be met:
- Operating system macOS 11.0 (Big Sur) or
newer
- Apple processor "M1”
4.8 Further information
Further minimum
requirements
WLAN
Recommended PDF
reader app (to be
installed separately
on the mobile device)
Adobe Acrobat
Reader

Specifications
17
4.9 Assembly and connections
4.9.1 Blower fan
Fig. 3: Blower fan unit Wöhler BC 600, front view
Legend
1 Telescopic rod
2 Operating keys
3 Motor cover with filter
4 Main switch,
5 power supply connection
6 Supporting feet
7 Pressure connection
(for indoor capillary tube)
8 Pressure connection
(for outdoor capillary tube)
9 Infrared interface (only for service)
2
4
6
3
5
6
8
1
9
7

Specifications
18
4.9.2 Main switch and power
supply connection
Fig.
4: Main switch
WARNING!
If a malfunction occurs, switch off the blower fan
unit at the main switch (1) and disconnect the
power plug (2).
4.9.3 Connections – capillary
tubes
Fig.
5
: Ports to connect capillary tubes for
differential pressure
measurements
1 route the capillary tube into the building
2 route the capillary tube out of the building
1
2
1
2

Specifications
19
4.9.4 Operating keys
Fig. 6: Operating keys and IR interface
WLAN key
Situation
WLAN key
Immediately after the
Wöhler BC 600 is
switched on
Flashes regularly
After a mobile device
connects to the ac-
cess point of the Wöh-
ler BC 600
Alternately flashes
twice quickly and goes
off
WLAN connection
successfully estab-
lished via the app
Lights up continuously
−Multiple device
mode
−Wöhler BC 600 is
waiting for a con-
nection to the ac-
cess point
Flashes very quickly
−Multiple device
mode
−Wöhler BC 600 is
connected to the
access point
Lights up permanently
with short interruptions
WLAN key
Start/Stop key
IR interface

Specifications
20
Start/Stop key
Situation
Start/Stop key
When zeroing the dif-
ferential pressure sen-
sor
Flashes quickly
−Measurement in
progress
−Set target differen-
tial pressure not yet
reached
Flashes
−Measurement in
progress
−Set target differen-
tial pressure
reached
Lights up continuously
−Measurement in
progress
−Wöhler BC 600
recognizes stable
pressure level
Flickers briefly