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
5608 999 GB 1/2012 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 contractors.
■ Work on the refrigerant circuit must
only be carried out by qualified and
authorised refrigeration engineers
■ 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
■ Legal instructions regarding the pre-
vention of accidents
■ Legal instructions regarding environ-
mental 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.
Danger
Contact with 'live' components
can lead to severe injuries.
Some components on the
PCBs will remain 'live' even
after the power supply has
been switched off.
Before removing covers from
appliances, wait at least 4
minutes for the power to dissi-
pate.
■ Safeguard the system against unau-
thorised reconnection
Safety instructions
Safety instructions
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!Please note
Electronic assemblies can be
damaged by electrostatic dis-
charges.
Before beginning work, touch
earthed objects, such as heating
or water pipes, to discharge static
loads.
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.)
5608 999 GB

4
Application.......................................................................................................... 5
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance.......................................... 6
Further details regarding the individual steps....................................................... 7
Remote control
Setting parameters............................................................................................... 41
Reinstating the delivered condition...................................................................... 45
Troubleshooting
Diagnosis at the remote control............................................................................ 46
Repairs................................................................................................................. 48
Connection and wiring diagram........................................................................ 50
Parts lists
Parts list, Vitovent with max. air flow rate 180 m3/h3............................................ 52
Parts list, Vitovent with max. air flow rate 300 m3/h3 and 400 m3/h3.................... 54
Commissioning/service reports
Commissioning report.......................................................................................... 56
Commissioning report example............................................................................ 57
Specification....................................................................................................... 58
Certificates
Declaration of conformity...................................................................................... 59
Keyword index.................................................................................................... 60
Index
Index
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The Vitovent 300 domestic ventilation
systems can be used for the following
application:
■ Ventilation of rooms via ducted supply
air and extract air systems
Any other use is considered inappropri-
ate.
Note
The Vitovent 300 is intended exclusively
for domestic use, i.e. even users who
have not had any instruction are able to
operate the appliance safely.
Application
Application
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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.................. 7
••• 2. Starting the Vitovent....................................................... 8
•3. Setting the language, time and date............................. 8
•4. Setting the air flow rate for operating modes.............. 9
•5. Duct system (flat) metal: Pre-selecting the supply/
extract air apertures....................................................... 10
•6. Duct system (flat) plastic: Pre-selecting the supply/
extract air apertures....................................................... 28
•7. Adjusting the air flow rate.............................................. 34
••• 8. Shutting down the system............................................. 36
•9. Opening the appliance................................................... 37
•10. Cleaning Vitovent, countercurrent heat exchanger
and filter mats (replacing if required)........................... 38
•11. Cleaning the plastic duct system (flat)......................... 40
• • 12. Checking the condensate drain.................................... 40
•13. Installing a countercurrent heat exchanger and
closing the Vitovent........................................................ 40
••• 14. Checking the firm seating of electrical plug-in
connections and cable entries
••• 15. Closing the appliance and commissioning the system
•16. Instructing the system user........................................... 40
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 with combus-
tion air interconnection results in
dangerous negative pressure
inside the room. The negative
pressure can result in a return of
flue gases into the room.
■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 own
outdoor air and exhaust air
duct.
■ Keep doors to boiler rooms
where the combustion air sup-
ply is not interconnected with
the living space airtight and
shut.
Information regarding the operation
of the Vitovent in conjunction with
open flue combustion equipment
■Always install an interlock system on
site. In the case of negative pressure
inside the room, the interlock system
(e.g. air pressure switch "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 stat circuit must be disabled
and frost protection must be safeguar-
ded by an electric preheater bank
(accessory) or by means of a geother-
mal 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 the domestic ventila-
tion system is checked for the follow-
ing characteristics:
■ Clear cross-section of outdoor air
intake and exhaust air discharge.
■ Sizing and routing of ducts according
to the design.
■ Correct appliance siting and fitting of
ducts, silencers, air distribution boxes,
supply and extract air apertures.
■ Correct condensate draining, correct
thermal insulation of ducts in cold
areas.
Note
The duct system can only be cleaned via
the supply air and extract air apertures.
Starting the Vitovent
Plug the Vitovent mains plug into a
standard socket with separate fuse/MCB
protection (230 V/50 Hz).
Setting the language, time and date
The selected language flashes during
commissioning after the Vitovent has
been switched on.
Delivered condition: "Deutsch"
1 2 3 4 5 6 7
Deutsch
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.
Duct system (flat) metal:
Setting the air flow rates at the supply
air/extract air apertures via the oper-
ating program "Standard ventilation":
Position the rotary program selector
to .
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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Setting the air flow rate for operating modes
!Please note
Incorrect adjustments can result
in interruption of operations.
Settings must only be made/
changed by a qualified contrac-
tor.
Incorrect operation by system
users will invalidate the war-
ranty.
Setting parameters for air flow rates:
1. Set 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" Standard ventilation
"02" Higher ventilation
7. dto confirm a selected value.
8. "ESC" to exit the menu after 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
Standard ventilation m3/h 100 150 200
Higher 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 standard ventila-
tion.
■ The setting for standard ventilation
must always be at least 5 m3/h lower
than the setting for higher ventilation.
Note
The air flow rate of the next higher oper-
ating mode will be selected automatically
if one of these conditions is not met.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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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
Standard ventilation m3/h 50 to 175 50 to 295 50 to 395
Higher ventilation m3/h 50 to 180 50 to 300 50 to 400
Note
■ The actual air flow rates that the
Vitovent can achieve are subject to the
pressure drop of the duct system and
that of the filters (filter class).
■ The speed of both fans is automati-
cally adapted to maintain the selected
air flow rate irrespective of the level of
filter contamination.
Duct system (flat) metal: Pre-selecting the supply/extract air
apertures
You will need the following design
details:
■ Pressure drop for the section
■ Air flow rates for the section
These details enable the determination
and pre-selection of the required aper-
ture sizes for the supply air and extract
air apertures using the relevant dia-
grams.
Supply air valve for setting into a wall (DN 100)
20
Ø 99
Ø 143
Max. flow rate: 30 m3/h
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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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 unrestricted apertures
1. Determine the number of apertures
from the diagram subject to the inten-
ded pressure drop and air flow rate.
Example:
The design provides the following
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 number of apertures A at the
supply air aperture for setting into a
wall.
3. Record the value in the commission-
ing report.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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Supply air valve for setting into a ceiling (DN 100, DN 125)
Note
■ The air discharge angle can be
increased by removing the air deflec-
tor B, i.e. from 180° to 360° (e.g.
when setting the valve in the centre of
a room).
■By moving deflector B the direction of
the supply air can be adjusted (e.g.
installation near walls).
a
b
c
B
A
AAnnular gap size
BAir deflector
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
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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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
AAnnular gap size in mm
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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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
AAnnular gap size in mm
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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DN 125, air discharge angle 180° (with deflector)
10
60
50
40
30
20
20 40 50 60 80 100
10
Pressure drop in Pa
Air flow rate in m³/h
49
A12
15
70 9030
62
AAnnular gap size in mm
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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DN 125, air discharge angle 360° (without deflector)
10
60
50
40
30
20
20 40 50 60 80 100
10
Pressure drop in Pa
Air flow rate in m³/h
4
9
A
12
15
70 9030
6
2
AAnnular gap size in mm
1. Determine the required annular gap
from the diagram subject to the inten-
ded pressure drop and air flow rate
for the section.
Example:
The design provides the following
details for the part section:
■ Supply air valve for ceiling installa-
tion: DN 125, air discharge angle
360°
■ Pressure drop: 20 Pa
■Air flow rate: 52 m3/h
Annular gap to be set: 6 mm
2. Set the determined annular gap A at
the supply air valve for setting into a
ceiling.
3. Record the value in the commission-
ing report.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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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. Determine the required aperture
width for the floor outlet from the dia-
gram subject to the intended pres-
sure drop and air flow rate for the
section.
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 determined aperture width
A with the slider.
4. Record the value in the commission-
ing report.
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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Slotted outlet with connection box
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. Determine the required aperture
width for the slotted outlet from the
diagram subject to the intended pres-
sure drop and air flow rate for the
section.
Example:
■ Pressure drop: 15 Pa
■Air flow rate: 27 m3/h
Aperture width to be set: 30 mm
2. Remove the slotted outlet from the
connecting chamber.
3. Set the determined aperture width
A with the slider at the back of the
slotted outlet (see the following dia-
gram on "Setting the air discharge
angle").
Commissioning, inspection, maintenance
Further details regarding the individual steps (cont.)
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4. Record the value in the commission-
ing report.
Setting the air discharge angle
Subject to the 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 rotary 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.)
5608 999 GB