Weltem M-WRG-M/MB-FK1 User manual

Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
INSTALLATION MANUAL
HOME VENTILATION WITH HEAT RECOVERY
Flush-mount installation kit
M-WRG-M/MB-FK1
M-WRG-M/MB-FK2
Solid construction with one connection for at ductwork
Solid construction with two connections for at ductwork
for ush-mounting ventilation units from the M-WRG-S
and M-WRG-K series
Part no. 5300-03-01 Week 35/2015 EN

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
Contents
1 Introduction ........................................................................................................................ 4
1.1 Notes on this installation manual ......................................................................................... 4
1.2 Description ........................................................................................................................... 4
1.3 Target group ......................................................................................................................... 5
1.4 Nameplate ............................................................................................................................ 5
1.5 Storage ................................................................................................................................ 5
1.6 Revision index ...................................................................................................................... 5
1.7 Explanation of the symbols used ......................................................................................... 5
2 Safety instructions ............................................................................................................. 6
2.1 Hazardclassication ............................................................................................................ 6
2.2 Notes on using the ventilation units safely ........................................................................... 6
2.3 Intended use ........................................................................................................................ 7
3 Planning notes ................................................................................................................... 7
3.1 Requirements for the installation wall .................................................................................. 7
3.2 Positioning the ventilation unit indoors ................................................................................ 7
3.3 Unrestricted access to the ventilation unit ........................................................................... 8
3.4 Additional planning notes for this installation kit .................................................................. 8
3.5 Retrospectivelyush-mountingtheinstallationkit ............................................................... 9
4 Warranty and liability ......................................................................................................... 9
4.1 Warranty .............................................................................................................................. 9
4.2 Liability ................................................................................................................................. 9
5 Items supplied .................................................................................................................. 10
5.1 Installation kit M-WRG-M/MB-FK1, part no. 5051-11, parts list ......................................... 10
5.2 Installation kit M-WRG-M/MB-FK2, part no. 5051-12, parts list ......................................... 10
5.3 Options ............................................................................................................................... 10
5.4 Installation materials required ............................................................................................. 11
6 Dimensions of the installation kits .................................................................................. 11
7 Tools and equipment required ........................................................................................ 12
8 General installation instructions .................................................................................... 12
9 Installing the installation kit ............................................................................................ 13
9.1 Fixingthexingplatetothewallbox ................................................................................. 13
9.2 Breaking through the wall .................................................................................................. 13
9.2.1 Planning the wall breakthrough for new builds .................................................................. 13
9.2.2 Breaking through an existing wall ...................................................................................... 14
9.3 Chasingoutchannelsforatductworkconnections .......................................................... 15
9.4 Chasingoutchannelsforfurtheratductwork .................................................................. 15
9.5 Chasing out channels for connecting cables ..................................................................... 16
9.6 Running the connecting cables .......................................................................................... 16
9.7 Inserting the wall box ......................................................................................................... 18

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9.8 Inserting the cardboard insert and plaster cover ............................................................... 18
9.9 Fixing the wall box ............................................................................................................. 19
9.10 Filling gaps around the wall box with foam ........................................................................ 20
9.11 Insertingatductworkintochannels .................................................................................. 20
9.12 Rivetingthe90°brackettoxingplate .............................................................................. 21
9.13 Plasteringthewallboxandatductworkontheinside ..................................................... 21
9.14 Aligning the wall box on the outside before plastering ....................................................... 22
9.15 Plastering the wall box on the outside ............................................................................... 23
9.16 Preparing the wall box for connecting the ventilation pipes ............................................... 24
9.17 Cutting ventilation pipes to length ...................................................................................... 24
9.18 Insertingandxingtheventilationpipes ............................................................................ 25
9.19 Sealing ventilation pipes on external wall .......................................................................... 26
9.20 Attaching the outer wall terminal ........................................................................................ 26
10 Installing the ventilation unit and duct adapter ............................................................ 27
11 Other at ductwork layout examples ............................................................................. 27

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
1 Introduction
1.1 Notes on this installation manual
This installation manual contains important information that should be followed when installing the
installation kit for the M-WRG-S and M-WRG-K ventilation units.
►Read all the instructions carefully before installing the kit to avoid possible risks and mis-
takes.
►When installation is complete, give these instructions to the home owner, caretaker or prop-
erty manager.
►These instructions are part of the product. Keep the instructions in a safe place for future
reference.
WARNING
►Follow ALL danger and warning instructions and notes on precautionary measures.
►Read sections „2 Safety instructions“ on page 6 and „3 Planning notes“ on page 7
carefully.
1.2 Description
Thismanualdescribeshowtoush-mountthefollowinginstallationkitsinsolidwalls:
— TypeM-WRG-M/MB-FK1withoneconnectionforatductworkforextractairor supply air
(see Fig. 1)
— TypeM-WRG-M/MB-FK2withtwoconnectionsforatductworkforextractairand supply air
(see Fig. 2)
Fig.1: M-WRG-M/MB-FK1 Fig.2: M-WRG-M/MB-FK2

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
1.3 Target group
The activities described in this manual must only be carried out by technicians with the following
qualications:
— Training in the installation and commissioning of electrical devices
— Training in electrical hazards and the local safety requirements
— Knowledge of the relevant standards and directives
— Knowledge and observance of this document and all the safety instructions
1.4 Nameplate
Thenameplateisattachedintwoplaces:
— beneath the red signal cover on the plaster cover (see item 1 in Fig. 3)
— beside the hole for the mains cable (item 1 in Fig. 4)
Fig.3: Nameplate on the plaster cover Fig.4: Nameplate beside the hole for the mains cable
1.5 Storage
►Store the installation kit in its original packaging in a dry place where the temperature ranges
between 0 °C and +40 °C.
1.6 Revision index
Edition Manual Date
3rd edition Installation Manual M-WRG-M/MB-FK1 / FK2 Week 35/2015 EN
1.7 Explanation of the symbols used
►This symbol indicates an action to be taken.
— This symbol indicates a list.

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
2 Safety instructions
This manual contains notes that you must follow for your own personal safety and to avoid injury
and damage to property. They are highlighted by warning triangles and are shown as follows ac-
cording to the level of danger.
2.1 Hazard classication
DANGER
The signal word designates a hazard with a high degree of risk which, if it is not avoided, will result
in death or severe injury.
WARNING
The signal word designates a hazard with a medium degree of risk which, if it is not avoided, will
result in death or severe injury.
CAUTION
The signal word designates a hazard with a low degree of risk which, if it is not avoided, could
result in minor or moderate injury.
NOTE
A note as used in this manual contains important information about the product or about a part of
the manual to which particular attention should be paid.
2.2 Notes on using the ventilation units safely
WARNING
—Fire protection
►Follow the requirements of the national technical approval from the Deutsches Institut
für Bautechnik (DIBt), approval number Z-51.3-138, when planning and installing the
unit.
—Operation with replaces
►An additional safety device (underpressure or differential pressure monitor) is needed to
monitoroperationwhenM-WRGventilationunitsareusedinconjunctionwithreplac-
es.
►Follow the requirements of the German Fire Code (FeuVo) when planning and installing
the unit.
►Contact the local chimney sweep before the end of the planning phase.
►Have the chimney sweep approve the operation of the ventilation unit.
—Installation in wet areas
The following rules from DIN VDE 0100-701/702 (IEC 60364-7-701) apply to installation in
wetareas:
— Protectionzone0and1:TheunitmustNOTbeinstalledintheseareas.
— Protectionzone2:Theunitmaybeinstalledinthisareaifthemainsswitchiscovered
with a protective cap. The protective cap must be installed at the factory.

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
►You will need to include the mains switch protective cap (M-WRG-SN,
part no. 5430) when you order the ventilation unit.
— Otherzone:Theunitmaybeinstalledinthisarea.
—Build-up of icicles and ice patches at low temperatures
The heat recovery process in our ventilation units causes condensation. This condensation
is dissipated to the outside via the exhaust air pipe. When external temperatures drop below
0 °C this can cause a build-up of icicles at the outer wall terminals and ice patches on the
ground.
►You should therefore position the outer wall terminals so as to exclude any possibility of
accidents.
2.3 Intended use
— The ventilation unit is intended for supplying air to and extracting air from living and recrea-
tionrooms(bedrooms,playrooms,livingrooms,bathrooms,basementworkshops,ofces,
consulting rooms, etc.). The ventilation unit is installed in a perpendicular position in the ex-
ternal wall. Any different or more extensive usage will be regarded as contrary to the intend-
ed use.
— The intended use also includes compliance with all the notes in the installation manual.
— For any use contrary to the intended use, Meltem Wärmerückgewinnung GmbH & Co. KG
shall accept no liability for any damage that may occur and offers no warranty that the com-
ponents will work perfectly and correctly.
3 Planning notes
3.1 Requirements for the installation wall
— The installation kit can be installed in solid walls that are at least 17.5 cm thick.
►For walls that are 60 cm thick or more, you will need 100 cm long outdoor and exhaust
air pipes (M-WRG-LR 100, part no. 5580).
NOTE
Thewallboxxestheventilationpipeswitha2°fall.
► Iftheunplasteredwallisthin(24cmorless),donotcutoffthewallboxushwiththe
unplastered wall (see section „9.14 Aligning the wall box on the outside before plaster-
ing“ on page 22). Allow the wall box to protrude in the vicinity of the external thermal
insulation composite system (ETICS) as this is the only way to allow the ventilation
pipestopassfarenoughthroughthewallboxandsobexedinplace.
► WhenttingtheETICS,makesurethattheventilationpipesmaintaintheir2°fall.
3.2 Positioning the ventilation unit indoors
— The ventilation unit must be installed indoors in a perpendicular position on an external wall.
— The ventilation unit must be installed so that the openings for extract air and supply air point
up.
— For a standard room height of 2.50 m, the best effect for air exchange is achieved if the

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
supply and extract air openings are roughly 30 cm (top edge of the unit) below the ceiling
(exception:extractairopeningintheceilingifthe2-roomsolutionisused).
► Maintainthefollowingminimumdistances:
— For this installation kit, the distance between the top edge of the wall box and the
ceilingmustbeatleast30cm,otherwisetherewillnotbeenoughspacefortheat
ductwork.
— The distance between the side edge of the ventilation unit and adjacent surfaces
should be at least 5 cm. The ventilation unit will be easier to operate if this mini-
mumdistanceismaintained.Italsoallowstheltertobereplacedwithoutobstruc-
tion.
►In taller rooms, position the ventilation unit so that an operator can still reach the control
panel unaided (without steps, ladders, etc.). Alternatively order a type of ventilation unit
that is not controlled from the unit itself.
3.3 Unrestricted access to the ventilation unit
The ventilation unit must always be freely accessible for operation and maintenance.
►Make sure that the ventilation unit is not blocked, obstructed or covered when the room is
subsequently decorated and furnished, otherwise it cannot be used and it will not be possible
toreplacethelter.Youshouldthereforemaintainaclearanceofatleast150mminfrontof
the ventilation unit cover.
►Make sure that the supply and extract air openings are not blocked, obstructed or covered
when the room is subsequently decorated and furnished.
3.4 Additional planning notes for this installation kit
WARNING
Observe the relevant re safety and soundproong regulations
► Observetheregulationsconcerningtherebehaviourofbuildingmaterialsandcomponents
asdenedinDIN4102.
► ObservetheregulationsconcerningsoundproonginbuildingsasdenedinDIN4109,par-
ticularly the requirements for insulation against airborne and impact sound.
►Observe the building regulations applicable in your country.
NOTE
► Observethefollowingrecommendationswhenusingatductwork.Thiswillavoiduninten-
tionalpressurelossesintheatductwork.
— Thetotallengthofaatductshouldnotexceed6m.
— Minimisethenumberofbendsintheatductwork.

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
3.5 Retrospectively ush-mounting the installation kit
WARNING
Danger from emerging gas or electric shock
►Make sure that there are no supply lines in the vicinity of the wall breakthrough (e.g. gas,
water or power).
►Make sure that the wall breakthrough does not affect the local static loading requirements.
►Fit a lintel if necessary.
4 Warranty and liability
4.1 Warranty
Thefollowingcasesshallinvalidatethewarranty:
— The installation kit was not installed as described in the installation manual.
— The ventilation unit was not installed as described in the installation manual.
— Genuine Meltem parts were not replaced with genuine parts.
— Unapproved changes were made to the installation kit or ventilation unit.
— Repairs were carried out incorrectly.
— Theventilationunitwasoperatedwithoutalter.
— Thewarrantydoesnotcoverwearingpartssuchaslters.
4.2 Liability
Themanufacturer’sliabilityshallnotapplyinthefollowingcases:
— The installation kit was not installed as described in the installation manual.
— The ventilation unit was not installed as described in the installation manual.
— Genuine Meltem parts were not replaced with genuine parts.
— Unapproved changes were made to the installation kit or ventilation unit.
— Repairs were carried out incorrectly.
— Theventilationunitwasoperatedwithoutalter.

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
5 Items supplied
5.1 Installation kit M-WRG-M/MB-FK1, part no. 5051-11, parts list
Theinstallationkitforush-mounting,solidconstructionwithoneconnectionforatductwork
110x53mmcontains:
Item Description Qty. Parts
1 Wall box 1x
2 Cardboard insert 1x
3 Plaster cover for wall
box
1x
4 Signal cover 1x
5 Protective cover for
90° bracket, vertical
1x
6 90° bracket, vertical 1x
7 Blind rivet 2x
8Assemblyxingplate 1x
9 Spax screw 4.5 x 35 3x
10 Protective sleeve 2x
5.2 Installation kit M-WRG-M/MB-FK2, part no. 5051-12, parts list
Theinstallationkitforush-mounting,solidconstructionwithtwoconnectionsforatductwork
110x53mmcontains:
Item Description Qty. Parts
1 Wall box 1x
2 Cardboard insert 1x
3 Plaster cover for wall
box
1x
4 Signal cover 1x
5 Protective cover for
90° bracket, vertical
2x
6 90° bracket, vertical 2x
7 Blind rivet 4x
8Assemblyxingplate 2x
9 Spax screw 4.5 x 35 6x
10 Protective sleeve 2x
5.3 Options
Item Description Part no.
11 InstallationkitllerpieceM-WRG-M/Fü 5575-5
- Plaster scrim M-WRG-PG 5060

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
5.4 Installation materials required
Additionalinstallationmaterialsareneededforush-mountinstallation.Thesemustbeordered
separately.
Item Description Part no.
- Outdoor air and exhaust air pipe 2 x 0.5 m - DN 100 M-WRG-LR 50 5574
6 Dimensions of the installation kits
456
260
A B
62 114 104 114
477
108
62
95
C
15
365
192,5 172,5
15 172,5 192,5
228 228
59
15
365
Fig.5: Dimensionsoftheinstallationkitswithllerpieceinmillimetres
A Hole for mains cable
B Hole for control cable (only needed for certain ventilation units, see Table 1 on page 17)
C The installation kit can be shortened by 192.5 mm.

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
7 Tools and equipment required
— ExpandingfoamwithabP(nationaltechnicaltestcerticateoftheDIBt)approval(“exact
gap” foam is recommended)
— Permanently elastic sealant, solvent-free if applied to polystyrene
— Riveter
— Saw for cutting the ventilation pipes to length
— Sealingtape,30mmwideforinstallingtheatductwork,e.g.Coroplast
— Set of cross-head screwdrivers
— Spirit level
— Styrofoam saw
— Wall chaser
— Wedgesforxingthewallbox,8x
alternativelyuseinatableaircushions,4x,e.g.Amo-BagfromWürth,partno.07156780
— Ifnecessary,wedgesforxingthellerpiece,4x
alternativelyuseinatableaircushions,2x,e.g.Amo-BagfromWürth,partno.07156780
NOTE
If the installation kit is to be retrospectively installed in a solid wall, you will need additional tools to
break through the wall.
8 General installation instructions
NOTE
— The unit must be installed in accordance with the generally acknowledged rules of technolo-
gy.
— Connections with adjacent components must be formed to absorb movements between the
contact surfaces.
— Sealanyconnectionsthatareexposedtodrivingrainwithtapes,prolesorsealantssuch
thattheyoffersufcientprotectionagainsttheexpectedconditions.
WARNING
Follow the relevant accident prevention regulations
►Follow the accident prevention regulations when setting up the installation location.
►Protect the outside area against falling parts.

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9 Installing the installation kit
9.1 Fixing the xing plate to the wall box
► UsetheSpaxscrewstoxthexingplate(seeFig.6andFig.7).
Fig.6: M-WRG-M/MB-FK1,Fixingthexing
plate for extract air or supply air
Fig.7: M-WRG-M/MB-FK2,Fixingthexing
plates for extract air and supply air
9.2 Breaking through the wall
The wall breakthrough can either be included when planning a new build or subsequently made in
the solid wall.
9.2.1 Planning the wall breakthrough for new builds
►Commission an architect or design professional to include the wall breakthrough at a suitable
point in the construction drawing and execute it when constructing the building shell.
Therearetwopossibleversionsofthewallbreakthrough:
— Wall breakthrough with recess (see Fig. 8 on page 14) for installation kit withoutller
piece M-WRG-M/Fü
— Full-width wall breakthrough (see Fig. 9 on page 14) for installation kit withller
piece M-WRG-M/Fü

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
Fig.8: Wall breakthrough for installation kit without
llerpiece,dimensionsinmillimetres
Fig.9: Wall breakthrough for installation kit with
llerpiece,dimensionsinmillimetres
9.2.2 Breaking through an existing wall
WARNING
Danger due to damaging supply lines and changing the stress loadings
►Make sure that there are no supply lines in the vicinity of the wall breakthrough (e.g. gas,
water or power).
►Make sure that the wall breakthrough does not affect the local static loading requirements.
►Fit a lintel if necessary.
► Breakthroughthewall.Therearetwopossibleversionsofthewallbreakthrough:
— Wall breakthrough with recess (see Fig. 8) for installation kit withoutllerpiece
M-WRG-M/Fü
— Full-width wall breakthrough (see Fig. 9) for installation kit withllerpiece
M-WRG-M/Fü

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9.3 Chasing out channels for at ductwork connections
— Installation kit M-WRG-M/MB-FK1 with
extract air or supply air duct
►Use the wall chaser to chase out one
channel 120 mm wide, 60 mm deep
and at least 100 mm high (see Fig. 10)
for either the extract air duct (item 1 in
Fig. 10) or the supply air duct (item 2
in Fig. 10).
— Installation kit M-WRG-M/MB-FK2 with
extract air and supply air duct
►Use the wall chaser to chase out two
channels 120 mm wide, 60 mm deep
and at least 100 mm high (see Fig. 10)
for both the extract air duct (item 1 in
Fig. 10) and the supply air duct (item 2
in Fig. 10).
► Checkthattheinstallationkittseasilyinto
the wall breakthrough.
►Check that the installation kit can be
pushed far enough into the wall breakthrough for the front surface of the wall box to end
ushagainstthesolidwallandextend15mmbeyondtheplasteringtrim.
9.4 Chasing out channels for further at ductwork
►Use the wall chaser to chase out channels
fortherestoftheatductworkasshownin
your plans.
Fig.11containsasamplelayoutforaat
duct.Youwillndotherexampleswith
twoatductsinFig.33andFig.34on
page 27.
NOTE
Thedimensionsofthechannelsfortheatducts
are:
— 120 mm wide
— 60 mm deep
Fig.10: Chasingoutchannelsforatductwork
connections, dimensions in millimetres
Fig.11: Flat ductwork layout example,
dimensions in millimetres

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9.5 Chasing out channels for connecting cables
►Chase one channel for the mains cable
(item 1 in Fig. 12) and one for the control
cable, if required (item 3 in Fig. 12).
NOTE
— A separate channel is needed for the con-
trol cable.
— The wall channels in Fig. 12 are shown by
way of example. Alternative cable ducts
are shown as dashed lines (items 2 and 4
in Fig. 12). For the subsequent electrical
installation work, we recommend running
the mains cable from the left and the con-
trol cable (if used) from the right at the wall
breakthrough.
9.6 Running the connecting cables
DANGER
Potentially fatal voltages.
— The electrical installation work must only be
carriedoutbyaqualiedelectrician.
— The VDE regulations or any special safety
regulations applicable in your country apply
to the electrical installation work.
►Disconnect the mains cable for connecting
to the ventilation unit on all poles from the
mains supply.
►Make sure that the mains supply cannot be
switched on again.
NOTE
Table 1 and Table 2 on page 17 contain over-
views of the recommended mains cable and
control cable types. A control cable is only needed
for certain types of ventilation unit.
►Run the mains cable (item 1 in Fig. 13) and the control cable, if required (item 2 in Fig. 13).
The cables should extend roughly 250 mm beyond the wall.
►Fix the mains cable and the control cable (if required) in position.
Fig.12: Chasing out channels for connecting cables
Fig.13: Running the connecting cables,
dimensions in millimetres

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
Part no. Type of ventilation
unit
Type of mains cable Type of control cable
5010
5016-1-3
5016-1-3-1
5016-1-3-2
5030
5030-2
M-WRG-S
M-WRG-S/Z-T-FU
M-WRG-S/Z-T-F-FU
M-WRG-S/Z-T-FC-FU
M-WRG-K
M-WRG-K/FC
NYM-J 3 x 1.5 mm2-
5016-1-0 M-WRG-S/Z-S NYM-J 3 x 1.5 mm2J-Y (St) Y 4 x 2 x 0.6 mm2or
J-Y (St) Y 4 x 2 x 0.8 mm2
5016-1-1
5016-1-1-1
5016-1-1-2
M-WRG-S/Z-T
M-WRG-S/Z-T-F
M-WRG-S/Z-T-FC
NYM-J 3 x 1.5 mm2J-Y (St) Y 10 x 2 x 0.6 mm2or
J-Y (St) Y 10 x 2 x 0.8 mm2
5016-1-2
5016-1-2-1
5016-1-2-2
5016-2-2
M-WRG-S/Z-KNX
M-WRG-S/Z-KNX-F
M-WRG-S/Z-KNX-FC
M-WRG-S/Z-EIB
NYM-J 3 x 1.5 mm2J-Y (St) Y 2 x 2 x 0.8 mm2or
EIB-Y (St) Y 2 x 2 x 0.8 mm2
5016-2-1 M-WRG-S/Z-24 NYM-J 3 x 1.5 mm2J-Y (St) Y 4 x 2 x 0.6 mm2or
J-Y (St) Y 4 x 2 x 0.8 mm2
5013
5014-1
5014-2
M-WRG-S 485
M-WRG-S 485-TF
M-WRG-S 485-TFC
NYM-J 3 x 1.5 mm2J-Y (St) Y 3 x 2 x 0.6 mm2or
J-Y (St) Y 3 x 2 x 0.8 mm2
Table1: Types of mains cable and control cable for each ventilation unit type
Part no. External control
input option
Type of mains cable Type of control cable
5046-30
5046-31
5046-32
M-WRG-O/EST
M-WRG-O/EST-1
M-WRG-O/EST-2
NYM-J 4 x 1.5 mm2-
Table2: Mains cable types for external control input options

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9.7 Inserting the wall box
NOTE
►Prepare the breakthrough surfaces suitably
for the wall box.
►Remove the plaster cover (item 1 in Fig. 14)
and the cardboard insert (item 2 in Fig. 14)
from the wall box (item 5 in Fig. 14).
►Thread the mains cable (item 3 in Fig. 14)
through the hole A (item A in Fig. 14).
NOTE
Hole B for the control cable is sealed when the
unit is supplied.
►If necessary, use a screwdriver to punch through the sealed hole (item B in Fig. 14).
►Thread the control cable, if required (item 4 in Fig. 14) through the hole B (item B in Fig. 14).
►Push the wall box (item. 5 in Fig. 14) fully into the wall breakthrough.
9.8 Inserting the cardboard insert and plaster cover
►Place the cardboard insert (item 1 in
Fig. 15) in the wall box (item 6 in Fig. 15).
►Insert the plaster cover (item 2 in Fig. 15)
into the wall box (item 6 in Fig. 15) as far as
it will go.
►Check that the red signal cover (item 3 in
Fig. 15) is seated in the plaster cover.
►Check that the protective cover (item 5
in Fig. 15) is seated in the 90° brackets
(item 4 in Fig. 15).
Fig.14: Inserting the wall box
Fig.15: Inserting the cardboard insert and
plaster cover

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9.9 Fixing the wall box
►Fix the wall box (item 1 in Fig. 16) in posi-
tion in the wall breakthrough using wedges
or air cushions (item 2 in Fig. 16).
►Use the spirit level (item 3 in Fig. 16) to
align the wall box so that it is perpendicular
andushwiththewall.
NOTE
►Make sure that the wall box is perpendicu-
lar as this is the only way to ensure that any
condensation will be carried outside by the
2° pipe fall.
► Fixthellerpiece,ifneeded,totheexternal
wall with wedges or air cushions.
NOTE
The plastering trim is 15 mm deep (see Fig. 17).
►If the depth of plaster should be more than
15 mm, position the wall box so that it
protrudessufcientlyoutofthesolidwall.
If you do not do this, there is a risk that the
ventilation unit will not work correctly.
►If the interior wall is not perpendicular or
at,alignthefrontsurfaceoftheplastering
trim (item 1 in Fig. 17) parallel to a plaster
stop bead running vertically.
Fig.16: Fixing the wall box
Fig.17: Depth of plastering trim 15 mm

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Installation manual
M-WRG-M/MB-FK1 / FK2
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9.10 Filling gaps around the wall box with foam
NOTE
►Check that the wall box is seated correctly.
Once you have used the foam, you will not
be able to align the wall box further.
►Fill the gaps between the wall box and wall
breakthrough all around and continuously
with expanding foam (item 1 in Fig. 18) or
usinganothersuitablellingmaterial.
►Once the foam has hardened, remove any
wedges that extend beyond the solid wall.
9.11 Inserting at ductwork into channels
► Joinindividualelementsoftheatductwork
to create partial sections and seal every
join with a layer of sealing tape 30 mm wide
(item 1 in Fig. 19).
► Inserttherstsectionoftheatductwork
into the 90° bracket on the wall box and seal
the join with sealing tape (item 2 in Fig. 19).
► Insertthesectionsofatductworkintothe
wall channel one after another and seal
every join with sealing tape.
► Fixtheatductworkinplacewithexpanding
foam. This will improve both the seal and
the insulation.
Fig.18: Filling gaps around the wall box
with foam
Fig.19: Fixingaatductworkconnectionwith
sealing tape