Viessmann Vitovent 300-W Mode d'emploi
Service instructions
for contractors
VIESMANN
Vitovent 300-W
Mechanical ventilation system with heat recovery
For a maximum air flow rate of 300 m3/h and 400 m3/h
For applicability, see the last page
VITOVENT 300-W
5793 605 GB 9/2015 Please keep safe.
2
Please follow these safety instructions closely to
prevent accidents and material losses.
Safety instructions explained
Danger
This symbol warns against the risk of injury.
!Please note
This symbol warns against the risk of material
losses and environmental pollution.
Note
Details identified by the word "Note" contain additional
information.
Target group
These instructions are exclusively intended for author-
ised contractors.
■Work on the refrigerant circuit may only be carried
out by authorised refrigeration engineers.
■Work on electrical equipment must only be carried
out by a qualified electrician.
■The system must be commissioned by the system
installer or a qualified person authorised by the
installer.
Regulations to be observed
■National installation regulations
■Statutory regulations for the prevention of accidents
■Statutory regulations for the protection of the envi-
ronment
■Codes of Practice of the relevant trade associations
■All relevant safety regulations as defined by DIN, EN,
DVGW, VDE and locally applicable standards
aÖNORM, EN and ÖVE
cSEV, SUVA, SVTI, SWKI and SVGW
Working on the system
■Isolate the system from the power supply (e.g. by
removing the separate fuse or by means of a mains
isolator) and check that it is no longer 'live'.
Note
In addition to the control circuit there may be several
load circuits.
Danger
Contact with 'live' components can result in
severe injuries. Some components on PCBs
remain 'live' even after the power supply has
been switched off.
Wait at least 4 minutes before removing equip-
ment covers, to allow the voltage to dissipate.
■Safeguard the system against reconnection.
!Please note
Electronic assemblies can be damaged by elec-
trostatic discharge.
Prior to commencing work, touch earthed
objects such as heating or water pipes to dis-
charge static loads.
Repair work
!Please note
Repairing components that fulfil a safety func-
tion can compromise the safe operation of your
system.
Replace faulty components with genuine
Viessmann spare parts.
Auxiliary components, spare and wearing parts
!Please note
Spare and wearing parts that have not been tes-
ted together with the system can compromise its
function. Installing non-authorised components
and making non-approved modifications or con-
versions can compromise safety and may inva-
lidate our warranty.
For replacement, use only spare parts supplied
or approved by Viessmann.
Safety instructions
Safety instructions
5793 605 GB
3
1. Information Symbols ................................................................................................. 4
Intended use .......................................................................................... 4
Passive house use ................................................................................. 5
Product information ................................................................................ 5
2. Commissioning, inspec-
tion, maintenance
Steps - commissioning, inspection and maintenance ............................ 6
3. Troubleshooting Diagnosis at the remote control ............................................................. 32
Faults without fault display ..................................................................... 33
4. Maintenance Removing the PCB cover ...................................................................... 34
Checking the DIP switches and pressure hoses ................................... 34
Overview of terminals ............................................................................ 36
3-way diverter damper connection for geothermal heat exchanger (on
site) ........................................................................................................ 36
Temperature sensor resistance curve .................................................... 37
5. Parts lists Vitovent 300-W overview ....................................................................... 39
Vitovent 300-W parts ............................................................................. 40
6. Connection and wiring dia-
gram
Controller PCB ....................................................................................... 42
7. Commissioning/service
reports
Appliance settings report ....................................................................... 43
Commissioning report ............................................................................ 45
Sample commissioning report ............................................................... 46
8. Specification ................................................................................................................ 47
9. Decommissioning and dis-
posal
Final decommissioning and disposal ..................................................... 48
10. Certificates Declaration of conformity ....................................................................... 49
11. Keyword index ................................................................................................................ 50
Index
Index
5793 605 GB
4
Symbol Meaning
Reference to other document containing
further information
1.
Step in a diagram:
The numbers correspond to the order in
which the steps are carried out.
Warning of material losses and environ-
mental pollution
Live electrical area
Pay particular attention.
■Component must audibly click into place.
or
■Acoustic signal
■Fit new component.
or
■In conjunction with a tool: Clean the sur-
face.
Dispose of component correctly.
Dispose of component at a suitable collec-
tion point. Do not dispose of component in
domestic waste.
The steps in connection with commissioning, inspec-
tion and maintenance are found in the "Commission-
ing, inspection and maintenance" section and identified
as follows:
Symbol Meaning
Steps required during commissioning
Not required during commissioning
Steps required during inspection
Not required during inspection
Steps required during maintenance
Not required during maintenance
Intended use
The appliance is only intended to be installed and
operated in ventilation systems that comply with
EN 1946-6, with due attention paid to the associated
installation, service and operating instructions. It is
only designed for the controlled mechanical ventilation
of living spaces.
Intended use presupposes that a fixed installation in
conjunction with permissible, system-specific compo-
nents has been carried out.
Commercial or industrial usage for a purpose other
than mechanical ventilation of living spaces shall be
deemed inappropriate.
Any usage beyond this must be approved by the man-
ufacturer for the individual case.
Incorrect usage or operation of the appliance (e.g. the
appliance being opened by the system user) is prohibi-
ted and results in an exclusion of liability. Incorrect
usage also occurs if the components in the ventilation
system are modified from their intended function.
Note
The appliance is intended exclusively for domestic
use, i.e. even users who have not had any instruction
are able to operate the appliance safely.
Information
Symbols
5793 605 GB
Information
5
Vitovent 300-W meets the requirements for passive
house use.
Product information
The Vitovent 300-W is a mechanical ventilation unit for
detached houses or apartments with up to 230 m2 of
living space.
The outdoor air drawn into the ventilation unit is first
routed through a filter, purified and then preheated by
a countercurrent heat exchanger. The preheated out-
door air is then routed through the ducts to the rooms
to be ventilated.
Via ductwork the extract air is drawn out of the rooms
where moisture and odours are created (kitchen, bath-
room, WC) and transported to the ventilation unit.
There, the extract air is purified by means of a filter to
protect the countercurrent heat exchanger. At the heat
exchanger, the extract air preheats the cooler outdoor
air according to the countercurrent principle and is
then routed out of the building via the exhaust air duct.
Heat recovery can be switched off automatically in line
with the temperatures inside and outside the building.
This is achieved by closing the bypass damper. This
enables the inside of the building to be cooled by the
outdoor air, e.g. on cooler summer nights.
The constant flow rate control ensures a defined, con-
stant air flow rate on the supply and extract air side,
irrespective of the static pressure of the ductwork. The
built-in preheater coil ensures balanced operation even
at outside temperatures down to about –10 °C and so
ensures a consistently high heat recovery rate. For
operation below this temperature, an additional electric
preheater coil (accessories) can be built into the out-
door air duct.
Various time programs can be set on the remote con-
trol to match the mechanical ventilation system to
demands.
The ventilation unit must always remain switched on to
expel any moisture.
Shutting down the system creates a risk of condensa-
tion forming inside the ventilation unit and on the build-
ing structure (moisture damage).
The ventilation unit has active monitoring of the instal-
led supply air and extract air filters. Required filter
changes are indicated on the remote control and are
therefore carried out as necessary.
Information
Passive house use
5793 605 GB
Information
6
Commissioning steps
Inspection steps
Maintenance steps Page
•1. Checking the mechanical ventilation system.................................................................. 7
••• 2. Starting the ventilation unit............................................................................................... 7
•3. Setting the language, time and date................................................................................. 8
•4. Setting the air flow rates.................................................................................................... 8
•5. Metal ductwork (flat): presetting the supply/extract air vents....................................... 9
•6. Plastic ductwork (flat): presetting air flow rates............................................................. 19
•7. Adjusting the air flow rates............................................................................................... 24
•8. Balancing the air flow rates on the supply air / extract air side.................................... 25
••• 9. Shutting down the ventilation unit................................................................................... 26
•10. Opening the appliance....................................................................................................... 26
•11. Cleaning and replacing filters........................................................................................... 27
•12. Cleaning the countercurrent heat exchanger.................................................................. 28
•13. Cleaning the interior.......................................................................................................... 29
•14. Cleaning the plastic ductwork (flat).................................................................................. 30
• • 15. Checking the condensate drain........................................................................................ 30
••• 16. Checking the firm seating of electrical plug-in connectors and cable entries
••• 17. Closing the appliance and commissioning the mechanical ventilation system
•18. Adjusting the appliance settings at the remote control................................................. 31
•19. Instructing the system user.............................................................................................. 31
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
5793 605 GB
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Danger
The simultaneous operation of open flue com-
bustion equipment (e.g. an open fireplace) and
the Vitovent in a space with combustion air inter-
connection results in dangerous negative pres-
sure in the interior. Negative pressure can result
in flue gas re-entering the room.
In order to prevent health risks, observe the fol-
lowing:
■Never operate the Vitovent simultaneously with
open flue combustion equipment (e.g. open fire-
place).
■Only operate combustion equipment in room sealed
mode with a separate combustion air supply. We rec-
ommend combustion equipment that has general
building approval as room sealed combustion equip-
ment of the Deutsches Institut für Bautechnik (DIBt)
[Germany].
■Keep doors to boiler rooms that are not part of the
combustion air interconnection with the living space
airtight and shut.
Information regarding the operation of the Vitovent
in conjunction with open flue combustion equip-
ment
■On-site safety equipment must be installed that will
switch off the ventilation unit when there is negative
pressure inside the room.
■The relevant flue gas inspector must give his/her
approval [check local regulations].
■Frost protection for the countercurrent heat
exchanger is ensured by means of the integral pre-
heater coil. For operation with even lower outside
temperatures, provide an additional external electric
preheater coil (accessories) or a geothermal heat
exchanger (on site) in the outdoor air duct.
!Please note
The simultaneous operation of extractor hoods
or extracting tumble dryers and the Vitovent in
rooms with an interconnected air supply results
in negative pressure inside the room.
■Never link extractor hoods or extracting tum-
ble dryers into the Vitovent ductwork.
■Set up kitchen extractor hoods as recirculating
extractors, which is more energy efficient.
We recommend the mechanical ventilation system
is checked for the following characteristics:
■Clear cross-section of outdoor air intake and exhaust
air discharge.
■Sizing and routing of ducts according to design.
■Correct appliance siting and fitting of ducts, silenc-
ers, air distribution boxes, supply and extract air
vents.
■Correct condensate draining, correct thermal insula-
tion of ducts in cold areas.
Note
The ductwork may be cleaned via the supply air and
extract air vents.
Starting the ventilation unit
!Please note
Dust entering the ventilation unit and the duct-
work can result in faulty operation of the
mechanical ventilation system.
Only start the ventilation unit after all other con-
struction work inside the building has been com-
pleted.
!Please note
Operating the ventilation unit with closed supply
air and extract air vents will result in damage to
the appliance.
If supply air and extract air vents were sealed off
with adhesive foil during construction work,
remove such foil completely prior to starting the
ventilation unit.
Insert the mains plug of the ventilation unit into a
standard socket with separate fuse/MCB protection
(230 V/50 Hz).
Commissioning, inspection, maintenance
Checking the mechanical ventilation system
5793 605 GB
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"Vitovent 300-W" operating instructions
Setting the air flow rates
!Please note
Incorrect settings can lead to operational disrup-
tions.
Settings must only be made/changed by a quali-
fied contractor.
Incorrect operation by system users will invalid-
ate the warranty.
Factory settings
Display Ventilation stage Vitovent 300-W for maximum air flow
rate
300 m3/h 400 m3/h
"Air Airflow 0" Background ventilation (minimum
air flow rate)
50 m3/h 50 m3/h
"Air Airflow 1" Reduced ventilation (reduced air
flow rate)
100 m3/h 100 m3/h
"Air Airflow 2" Standard ventilation (standard air
flow rate)
150 m3/h 200 m3/h
"Air Airflow 3" Intensive ventilation (maximum air
flow rate)
225 m3/h 300 m3/h
Setting ranges
Display Ventilation stage Vitovent 300-W for max. air flow rate
300 m3/h 400 m3/h
"Air Airflow 0" Background ventilation (minimum
air flow rate)
Do not adjust Do not adjust
"Air Airflow 1" Reduced ventilation (reduced air
flow rate)
50 to 300 m3/h 50 to 400 m3/h
"Air Airflow 2" Standard ventilation (standard air
flow rate)
50 to 300 m3/h 50 to 400 m3/h
"Air Airflow 3" Intensive ventilation (maximum air
flow rate)
50 to 300 m3/h 50 to 400 m3/h
Commissioning, inspection, maintenance
Setting the language, time and date
5793 605 GB
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Adjust the air flow rates at the remote control in line
with engineering parameters and demand. For this,
note the following:
■Select the design air flow rate from the engineering
parameters for ventilation stage 2 ( , "Air Airflow
2", standard ventilation).
■Set air flow rates for ventilation stages 1 to 3 in
ascending order, i.e. lower for ventilation stage 1
than for ventilation stage 2, etc.
Note
If non-incremental settings are chosen for the air flow
rates, settings may be corrected automatically at the
end of the complete setting process.
■We recommend setting the air flow rates so that suc-
cessive ventilation stages are at least 10 m3/h apart.
"Vitovent 300-W" operating instructions
Notes
■The actual air flow rates that the mechanical ventila-
tion system can achieve are dependent on the pres-
sure drop resulting from the ductwork and the filters
(filter class).
■The speed of both fans is automatically adapted to
maintain the selected air flow rate irrespective of the
level of filter contamination.
■In order to balance out pressure differences between
the supply air and extract air side the air flow rate
can be adjusted for one side relative to the other
(see page 25).
Metal ductwork (flat): presetting the supply/extract air vents
You will need the following engineering details:
■Pressure drop for the individual sections
■Air flow rates for the individual sections
Using these details, the required aperture width for the
supply air and extract air vents can be obtained from
the relevant diagrams.
Metal supply air valve for ceiling installation (DN 100, DN 125)
Note
■By removing deflector B the air discharge angle can
be increased from 180° to 360° (e.g. when installing
the valve in the centre of a room).
■By repositioning deflector B the direction of the sup-
ply air can be adjusted, e.g. for installation near a
wall.
a
b
c
B
A
Fig. 1
AWidth of annular gap
BDeflector
Commissioning, inspection, maintenance
Setting the air flow rates (cont.)
5793 605 GB
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Nominal diameter Dimensions in mm Max. flow rate in m3/h
a b c
DN 100 67 17 143 45
DN 125 76 18 173 60
DN 100, air discharge angle 180° (with deflector)
10
50
40
30
20
20 40 50 60 80
10
Pressure drop in Pa
Air flow rate in m³/h
2
A
15
30 70
4 6 129
Fig. 2
AWidth of annular gap in mm
DN 100, air discharge angle 360° (without deflector)
10
50
40
30
20
20 40 50 60 80
10
Pressure drop in Pa
Air flow rate in m³/h
2
A
30 70
4 6
9
12
Fig. 3
AWidth of annular gap in mm
Commissioning, inspection, maintenance
Metal ductwork (flat): presetting the… (cont.)
5793 605 GB
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