Viessmann VITOVENT 300 Operating instructions

Service instructions
for contractors
VIESMANN
Vitovent 300
Domestic ventilation system with heat recovery
for a max. air flow rate 180 m3/h, 300 m3/h, 400 m3/h
For applicability, see the last page
VITOVENT 300
5692 903 GB 1/2011 Please keep safe.

2
Please follow these safety instructions closely to prevent accidents and mate-
rial 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 envi-
ronmental pollution.
Note
Details identified by the word "Note" con-
tain additional information.
Target group
These instructions are exclusively
designed for qualified personnel.
■ Work on electrical equipment must
only be carried out by a qualified elec-
trician.
■ The system must be commissioned by
the system installer or a qualified per-
son authorised by the installer.
Regulations
Observe the following when working on
this system
■ National installation requirements
■ All legal instructions regarding the pre-
vention of accidents,
■ All legal instructions regarding envi-
ronmental protection,
■ The Code of Practice of relevant trade
associations
■ All current safety regulations as
defined by DIN, EN, DVGW, VDE and
all locally applicable standards
aÖNORM, EN and ÖVE
cSEV, SUVA, SVTI and SWKI
Working on the system
■ Isolate the system from the power sup-
ply and check that it is no longer 'live',
e.g. by removing the separate fuse or
by means of a main isolator.
Note
In addition to the control circuit, there
may be several power circuits.
■ Safeguard the system against unau-
thorised reconnection.
!Please note
Electronic modules can be dam-
aged by electrostatic dis-
charges.
Before beginning work, touch
earthed objects, such as heating
or water pipes, to discharge static
loads.
Safety instructions
Safety instructions
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3
Repair work
!Please note
Repairing components that fulfil a
safety function can compromise
the safe operation of your sys-
tem.
Replace faulty components only
with original Viessmann spare
parts.
Auxiliary components, spare and
wearing parts
!Please note
Spare and wearing parts that
have not been tested together
with the system can compromise
its function. Installing non-author-
ised components and making
non-approved modifications or
conversions can compromise
safety and may invalidate our
warranty.
For replacements, use only orig-
inal spare parts supplied or
approved by Viessmann.
Safety instructions
Safety instructions (cont.)
5692 903 GB

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Commissioning, inspection, maintenance
Steps – commissioning, inspection and maintenance.......................................... 5
Further details regarding the individual steps....................................................... 6
Remote control
Setting parameters............................................................................................... 38
Returning to the delivered condition..................................................................... 41
Troubleshooting
Diagnosis at the remote control............................................................................ 42
Repair................................................................................................................... 44
Connection and wiring diagram........................................................................ 46
Parts lists
Parts list, Vitovent with max. air flow rate 180 m3/h3............................................ 48
Parts list, Vitovent with max. air flow rate 300 m3/h3 and 400 m3/h3.................... 50
Commissioning/service reports
Commissioning report.......................................................................................... 52
Example of a commissioning report..................................................................... 53
Specification....................................................................................................... 54
Certificates
Declaration of conformity...................................................................................... 55
Keyword index.................................................................................................... 56
Index
Index
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For further information regarding the individual steps, see the page indicated
Commissioning steps
Inspection steps
Maintenance steps Page
•1. Checking the domestic ventilation system.................. 6
••• 2. Starting the Vitovent....................................................... 7
•3. Setting the language, time and date............................. 7
•4. Setting the air flow rates for the operating mode........ 8
•5. Metal duct system: presetting the ventilation/extract
air apertures.................................................................... 9
•6. Plastic duct system: presetting the ventilation/extract
air apertures.................................................................... 27
•7. Adjusting air flow rates.................................................. 31
••• 8. Shutting down the system............................................. 34
•9. Opening the appliance................................................... 34
•10. Cleaning Vitovent, countercurrent heat exchanger
and filter mats (replacing if required)........................... 35
• • 11. Checking the condensate drain.................................... 37
•12. Installing a countercurrent heat exchanger and
closing the Vitovent........................................................ 37
••• 13. Checking the firm seating of electrical plug-in
connections and cable entries
••• 14. Closing the appliance and commissioning the system
•15. Instructing the system user........................................... 37
Commissioning, inspection, maintenance
Steps – commissioning, inspection and maintenance
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Checking the domestic ventilation system
Danger
The simultaneous operation of
open flue combustion equipment
(e.g. an open fireplace) and the
Vitovent in a space where the
combustion air supply is intercon-
nected results in dangerous neg-
ative pressure inside the room.
The negative pressure can result
in a return of flue gases into the
room interior.
■Never operate the Vitovent
simultaneously with open flue
combustion equipment (e.g.
open fireplace).
■ Only operate solid fuel com-
bustion equipment in bal-
anced flue mode with its inde-
pendent outdoor air and
exhaust air duct.
■ Doors to heating rooms where
the combustion air supply is not
interconnected with the living
space must be airtight and
must be kept shut.
Information regarding the operation
of the Vitovent 300 in conjunction
with open flue combustion equipment
■Always install an interlock system on
site. In case of negative pressure
inside the room, the interlock system
(e.g. air pressure limiter "P4" made by
Erich Huber, www.luftdruck-
waechter.de) must switch off the
Vitovent.
■ The relevant flue gas inspector must
give his approval [check local regula-
tions].
■ The frost protection must be disabled
(remote control) and frost protection
must be ensured through an electric
preheater bank (accessory) or a geo-
thermal heat exchanger (on-site).
!Please note
The simultaneous operation of
extractor hoods or tumble dryers
and the Vitovent in interconnec-
ted rooms results in negative
pressure inside the room.
■Never link extractor hoods and
tumble dryers into the Vitovent
duct system.
■ Set up extractor hoods in the
kitchen either to recirculate air
or to expel the air to the out-
side.
Recommendation: Recirculat-
ing extractors offer a better
energy balance.
Commissioning, inspection, maintenance
Further details regarding the individual steps
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We recommend that the domestic
ventilation system is checked for the
following characteristics:
■ Clear cross-section of outdoor air inlet
and exhaust air outlet.
■ Sizing and routing of ducts according
to the design.
■ Correct equipment installation and
attachment of ducts, silencers, air dis-
tribution boxes, ventilation and extract
air apertures.
■ Flexible connection from the Vitovent
to the duct system.
■ Correct condensate draining, correct
thermal insulation of ducts in cold
areas.
Note
The duct system can be cleaned, if
required, via the ventilation and extract
air apertures.
Starting the Vitovent
Plug the Vitovent power plug into safety
sockets with separate fuse/MCB protec-
tion (230 V/50 Hz).
Setting the language, time and date
The selected language flashes during
commissioning after the Vitovent has
been started.
Delivered condition: "Deutsch"
1 2 3 4 5 6 7
German
PROG
1. xw for the required language.
2. dto confirm; "12" (represent-
ing 12:00 h) flashes.
3. xw in sequence "HOUR",
"MINUTE", "YEAR",
"MONTH" and "DAY".
4. drespectively to confirm; the
program selected at the
rotary program selector
starts.
5. Select the required operating pro-
gram on the rotary program selector.
Metal duct system:
Setting the air flow rates at the venti-
lation air/extract air apertures via the
operating program "Normal ventila-
tion":
Turn the rotary program selector to
.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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Setting the air flow rates for the operating mode
!Please note
Incorrect adjustments can result
in incorrect operation.
Settings must only be made/
changed by a qualified contrac-
tor.
Incorrect operation by system
users will invalidate our war-
ranty.
Setting parameters for air flow rates:
1. Position the rotary program selector
to "MENU".
2. xw for "Service".
3. dto confirm.
4. xw for "Parameter".
5. dto confirm; the first parame-
ter "00" is displayed; the
selected air flow rate for
reduced mode flashes (value
in m3/h).
6. xw to change the value
or
dfor the next parameter:
"00" Reduced ventilation
"01" Normal ventilation
"02" Raised ventilation
7. dto confirm a selected value.
8. "ESC" to exit the menu following
setting the air flow rates.
Delivered condition:
Vitovent 300 for max. air flow rate m3/h 180 300 400
Reduced ventilation m3/h 75 100 100
Normal ventilation m3/h 100 150 200
Raised ventilation m3/h 150 225 300
This setting can be adjusted to meet rel-
evant requirements in accordance with
the system engineering. Consider the
following:
■ The setting for reduced ventilation
must always be at least 10 m3/h lower
than the setting for normal ventilation.
■ The setting for normal ventilation must
always be at least 5 m3/h lower than
the setting for raised ventilation.
Note
The air flow rate of the higher operating
mode is selected automatically if one of
these conditions is not met.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 903 GB

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Setting ranges (variable):
Vitovent 300 for max. air flow rate m3/h 180 300 400
Reduced ventilation m3/h 50 to 170 50 to 290 50 to 390
Normal ventilation m3/h 50 to 175 50 to 295 50 to 395
Raised ventilation m3/h 50 to 180 50 to 300 50 to 400
Note
■ The air flow rates that the Vitovent can
actually achieve are subject to the
pressure drop of the air duct system
and that of the filters (filter class).
■ To maintain the selected air volume
irrespective of the level of filter con-
tamination, the speed of both fans is
automatically adapted.
Metal duct system: presetting the ventilation/extract air aper-
tures
The engineering must provide the follow-
ing details:
■ Pressure drop for the part sections
■ Air flow rates for the part sections
These details enable the determination
and pre-selection of the required aper-
ture sizes for the ventilation air and
extract air apertures using the relevant
diagrams.
Ventilation air aperture for wall installation (DN 100)
20
Ø 99
Ø 143
Max. flow rate: 30 m3/h
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 903 GB

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10
40
30
20
20 40 50
10
Pressure drop in Pa
Air flow rate in m³/h
30
3 4 5 6 7
A
ANumber of open apertures
1. Subject to the planned pressure drop
and air flow rate for the part section,
determine the required number of
apertures from the diagram.
Example:
The engineering provides the follow-
ing details for the part section:
■ Pressure drop: 20 Pa
■Air flow rate: 27 m3/h
Number of apertures to be set: 6
2. Set the determined number of aper-
tures A at the ventilation air aperture
for wall installation.
3. Record the actual value in the com-
missioning report.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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11
Ventilation air valve for ceiling installation (DN 100, DN 125)
Note
■Removing deflector B enables the air
discharge angle to be increased from
180° to 360° (e.g. when installing in the
centre of the room).
■By twisting deflector B the direction
of the ventilation air can be adjusted
(e.g. installation near walls).
Ø 133
777713
Ø 140
A
B
Max. flow rate: DN 100 45 m3/h,
DN 125 60 m3/h
AAnnular gap
BAir deflector
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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DN 100, air discharge angle 180°
10
50
40
30
20
20 40 50 60 80
10
Pressure drop in Pa
Air flow rate in m³/h
3
A
9
12
6
AAperture width of the annular gap in
mm
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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DN 100, air discharge angle 360°
10
50
40
30
20
20 40 50 60 80
10
Pressure drop in Pa
Air flow rate in m³/h
3
A
9
12
6
AAperture width of the annular gap in
mm
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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DN 125, air discharge angle 180°
10
60
50
40
30
20
20 40 50 60 80 100
10
Pressure drop in Pa
Air flow rate in m³/h
3
9
A6
15
AAperture width of the annular gap in
mm
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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DN 125, air discharge angle 360°
10
60
50
40
30
20
20 40 50 60 80 100
10
Pressure drop in Pa
Air flow rate in m³/h
9
A6
3
15
AAperture width of the annular gap in
mm
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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1. Subject to the planned pressure drop
and air flow rate for the part section,
determine the required annular gap
from the diagram.
Example:
The engineering provides the follow-
ing details for the part section:
■ Ventilation air valve for ceiling
installation: DN 125, air discharge
angle 360°
■ Pressure drop: 20 Pa
■Air flow rate: 55 m3/h
Annular gap to be set: 6 mm
2. Set the determined annular gap A at
the ventilation air valve for ceiling
installation.
3. Record the actual value in the com-
missioning report.
Floor outlet
100
300
A
110
Max. flow rate: 35 m3/h
AAperture width
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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32.5
30
27.5
25
22.5
20
17.5
15
12.5
10
7.5
5
2.5
0
35
Pressure drop in Pa
Air flow rate in m³/h
101010 15 20 25 30 35 40 45 50
A4
20
18
16
14
12
10
8
6
AAperture width in mm
1. Subject to the planned pressure drop
and air flow rate for the part section,
determine the required aperture
width for the floor outlet from the dia-
gram.
Example:
■ Pressure drop: 15 Pa
■Air flow rate: 35 m3/h
Aperture width to be set: 6 mm
2. Remove the grille from the floor out-
let.
3. Set the aperture width with the slider
on floor outlet A.
4. Record the actual value in the com-
missioning report.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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Slotted outlet with connecting chamber
A
Max. flow rate: 35 m3/h
AAperture width
25
22.5
20
17.5
15
12.5
10
7.5
5
2.5
0
Pressure drop in Pa
Air flow rate in m³/h
101010 15 20 25 30 35 40
A
30
40
AAperture width in mm
1. Subject to the planned pressure drop
and air flow rate for the part section,
determine the required aperture
width for the slotted outlet from the
diagram.
Example:
■ Pressure drop: 15 Pa
■Air flow rate: 27 m3/h
Aperture width to be set: 30 mm
2. Undo the slotted outlet from the con-
necting chamber.
3. With the slider at the back of the slot-
ted outlet (see the following diagram
regarding "Setting the air discharge
angle"), set the determined aperture
angle A.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 903 GB

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4. Record the actual value in the com-
missioning report.
Setting the air discharge angle
Subject to installation position, the air
discharge angle can be set to 180° or
360°.
6
F
E
D
C
B
A
1
2
3
4
5
C
B
A
AAir discharge angle
BScaled selector
CSlider on the back of the slotted out-
let
Installation position Setting the rotary selectors
Wall installation
Set rotary selectors to "C/D"
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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Installation position Setting the rotary selectors
Ceiling installation
Set all rotary selectors to "6"
Set half of the rotary selectors to "1/A" and the other half to
"F/6"
Extract air valve for wall and ceiling installation
13
A
a
+-
Max. flow rate: DN 100 45 m3/h,
DN 125 60 m3/h
AValve cone adjustment in mm
Nominal diameter Dimension a
DN 100 140
DN 125 165
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
5692 903 GB