Meltem M-WRG-II M 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
with plastering trim
(solid construction)
M-WRG-II M/MB
for ush-mounting ventilation units
from the M-WRG-II series
Part no. 744001EN Week 17/2019 EN

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Installation manual
M-WRG-II M/MB
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 Nameplates ..................................................................................................................... 5
1.5 Storage ........................................................................................................................... 5
1.6 Revision index ................................................................................................................ 6
1.7 Explanation of the symbols used .................................................................................... 6
1.8 Supplementary documents ............................................................................................. 6
2 Safety instructions ....................................................................................................... 7
2.1 Hazardclassication ....................................................................................................... 7
2.2 Notes on using the ventilation units safely ...................................................................... 7
2.2.1 Fire protection ................................................................................................................. 7
2.2.2 Operationwithreplaces ................................................................................................ 7
2.2.3 Installation in wet areas .................................................................................................. 8
2.2.4 Condensate drain ........................................................................................................... 8
2.2.5 Starting and using the ventilation unit ............................................................................. 8
2.3 Notes on using the ventilation units ................................................................................ 8
2.4 Note on use in conjunction with room air conditioners ................................................... 9
2.5 Intended use ................................................................................................................... 9
3 Planning notes ............................................................................................................ 10
3.1 Requirements for the installation wall ........................................................................... 10
3.2 Positioning the ventilation unit indoors ......................................................................... 10
3.3 Unrestricted access to the ventilation unit ..................................................................... 11
3.4 Retrospectivelyush-mountingtheinstallationkit ........................................................ 12
3.5 Electrical connection ..................................................................................................... 12
4 Warranty and liability .................................................................................................. 13
4.1 Warranty ....................................................................................................................... 13
4.2 Liability .......................................................................................................................... 13
5 Items supplied ............................................................................................................. 14
5.1 Installation kit M-WRG-II M/MB, part no. 711000 .......................................................... 14
5.2 Options ......................................................................................................................... 14
5.3 Installation materials required ....................................................................................... 14
6 Dimensions of the installation kit ............................................................................. 15
7 Tools and equipment required ................................................................................... 16
8 General installation instructions ............................................................................... 16
9 Installing the installation kit ...................................................................................... 17
9.1 Breaking through the wall ............................................................................................. 17
9.1.1 Planning the wall breakthrough for new builds ............................................................. 18

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9.1.2 Breaking through an existing wall ................................................................................. 18
9.2 Chasing out channels for connecting cables ................................................................ 18
9.3 Running the mains and control cables .......................................................................... 19
9.3.1 Cable types ................................................................................................................... 20
9.3.2 External control input .................................................................................................... 21
9.3.3 Option M-WRG-II O/EGG-AUS ..................................................................................... 21
9.4 Inserting the wall box .................................................................................................... 22
9.5 Inserting the cardboard insert and plaster cover .......................................................... 22
9.6 Fixing the wall box ........................................................................................................ 23
9.7 Filling gaps around the wall box with foam ................................................................... 24
9.8 Condensate drain on the exhaust air pipe .................................................................... 25
9.9 Plastering the installation kit on the inside .................................................................... 26
9.10 Aligning the wall box on the outside before plastering .................................................. 27
9.10.1 If the solid wall is less than 36.5 cm thick ..................................................................... 27
9.10.2 If the solid wall is more than 36.5 cm thick ................................................................... 27
9.11 Plastering the installation kit on the outside .................................................................. 28
9.12 Preparing the installation kit for connecting the ventilation pipes ................................. 28
9.13 Cutting ventilation pipes to length ................................................................................. 29
9.14 Insertingandxingtheventilationpipes ....................................................................... 30
9.15 Sealing ventilation pipes on external wall ..................................................................... 30
9.16 Attaching the outer wall terminal ................................................................................... 31
10 Installing the ventilation unit ..................................................................................... 31

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Installation manual
M-WRG-II M/MB
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 M-WRG-II M/MB installation kit for the M-WRG-II ventilation units.
►Read all the instructions carefully before installing the kit to avoid possible risks and
mistakes.
►When assembly is complete, give these instructions to the home owner, caretaker or
property 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 7 and “3 Planning notes” on
page 10 carefully.
1.2 Description
Thismanualdescribeshowtoush-
mount the M-WRG-II M/MB installation
kit (item 1 in Fig. 1) in solid walls. In
new builds, if a complete wall aperture
is planned for the installation kit or if a
complete wall breakthrough is planned
foraretrot,theoptionalllerpiece
M-WRG-II M/Fü (item 2 in Fig. 1) can be
used to pack out the wall.
Fig. 1: Installation kit M-WRG-II M/MB and optional
llerpieceM-WRG-IIM/Fü
1
2

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Installation manual
M-WRG-II M/MB
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 Nameplates
The nameplates are attached in two places:
— on the plaster cover (item 1 in Fig. 2)
— beside the cable inlet for the mains and control cables (item 1 in Fig. 3)
Fig. 2: Nameplate on the plaster cover
1
Fig. 3: Nameplate beside cable inlet
1
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.

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
1.6 Revision index
Edition Manual Date
1st edition Installationmanualforush-mountinstallationkit
with plastering trim (solid construction)
M-WRG-II M/MB
Week 17/2019 EN
1.7 Explanation of the symbols used
►This symbol indicates an action to be taken.
— This symbol indicates a list.
1.8 Supplementary documents
Manual Part no.
Installationmanualforush-mountinstallationkitM-WRG-IIM
(frame construction)
744002EN
Installationmanualforush-mountinstallationkitM-WRG-IIM-U2744003EN
Installation manual for M-WRG-II ventilation units 744004EN
Installation manual for outer wall terminals M-WRG-II ES (-P, -PK) 744005EN
Installation manual for window reveal installation kit 744006EN
Operating instructions for M-WRG-II P (-F, -FC), M-WRG-II E (-F, -FC)
ventilation units
744007EN
Table 1: Supplementary documents

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Installation manual
M-WRG-II M/MB
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 according 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.
NOTICE
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
2.2.1 Fire protection
Followthegenerallyapplicableresafetyrequirementswhenplanningandinstallingthe
unit.
2.2.2 Operation with replaces
— An additional safety device (underpressure or differential pressure monitor) is needed
to monitor operation when M-WRG-II ventilation units are used in conjunction with
replaces.
— 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.

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
2.2.3 Installation in wet areas
The following rules from DIN VDE 0100-701/702 (IEC 60364-7-701) apply to installation
of M-WRG-II ventilation units in wet areas:
— Protection zone 0: The unit must NOT be installed in this area.
— Protection zone 1: The unit must only be installed with the “integrated into wall” U2
variant. The extract and supply air valves must be installed in the top part of the wall
or in the ceiling.
— Protection zone 2 and other zone: The unit may be installed in this area.
Country-specicstandards/regulationsonobservingtheprotectionzonesforinstallation
in rooms with bathtub or shower must also be followed.
2.2.4 Condensate drain
The heat recovery process in our ventilation units causes condensation. This condensa-
tion is dissipated via the exhaust air pipe.
— If M-WRG-II P ventilation units are used, a condensate connection should be provided
(see section 9.12 on page 28).
— With M-WRG-II E ventilation units (with enthalpy heat exchanger) there is no conden-
sationifthefollowingrequirementsarefullled:
— The ventilation unit is operated as described in “Intended use” (see section 2.5 on
page 9) and the “Rules for correct usage” chapter of the operating instructions.
— There is no exceptional loading due to very high atmospheric humidity.
2.2.5 Starting and using the ventilation unit
— Do not start up the ventilation unit until it is fully installed.
— Always make sure that the cover is closed and locked in place before using the venti-
lation unit.
— Please note that the ventilation unit must not be used without the outer wall terminal
for safety reasons.
2.3 Notes on using the ventilation units
— This unit may be used by children from 8 years old and by persons of restricted phys-
ical, sensory or mental abilities or persons lacking experience and knowledge if they
are supervised or have been instructed in how to use the unit safely and understand
the associated hazards. Do not allow children to play with the unit. Cleaning and user
maintenance must not be carried out by children unless they are supervised.
►Follow the regulations applicable in your country concerning the age from which
people may be permitted to operate the ventilation unit.

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
— The ventilation unit must always be freely accessible for operation and maintenance.
►Make sure that the ventilation unit is not covered or obstructed when the room is
subsequently decorated and furnished, otherwise it cannot be operated and it will
notbepossibletoreplacetheairlters.Youshouldthereforemaintainaclearance
of at least 15 cm in front of the ventilation unit cover.
►Make sure that the supply and extract air openings are not covered when the room
is subsequently decorated and furnished, otherwise the ventilation unit’s functions
may be impaired.
2.4 Note on use in conjunction with room air conditioners
Condensation may form in the ventilation unit if the external temperature and humidity are
high, but the room temperature is cool.
For these conditions, we recommend using the M-WRG-II E ventilation unit with enthalpy
heat exchanger. This has the advantage of removing both sensible and latent heat from
thesupplyair.Asaresult,theairisdehumidiedaswellasbeingprecooled.Theroom
air conditioner needs to do less work, so the user saves money on the reduced power
consumption.
2.5 Intended use
— The ventilation unit is designed to ventilate living spaces and rooms used for
quasi-residential purposes. The ventilation unit is installed in a perpendicular position
in the external wall. Any different or more extensive usage will be regarded as contrary
to the intended use.
— The intended use also includes compliance with all the notes in the operating instruc-
tions.
— Theventilationunitmustnotbeoperatedwithoutairltersorouterwallterminal.
— The ventilation unit is intended for use in rooms with normal room air humidity levels
of approx. 40 % to 70 % RH. It must not be installed in rooms in which the relative
humidity during operation constantly exceeds 80 %.
— The ventilation unit’s functions may be impaired or the unit may be damaged in rooms
with a lot of dust (e.g. model-making) or corrosive gas emissions (e.g. blueprint shop,
cleaning).
— 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
ventilation unit will work perfectly and correctly.

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
3 Planning notes
3.1 Requirements for the installation wall
The installation kit can be installed in solid walls that are at least 24 cm thick (including
internal plaster, external render and insulation).
►For wall structures that are 63 cm thick or more, you will need 100 cm long outdoor
and exhaust air pipes (M-WRG-LR 100, part no. 5580).
NOTICE
Theinstallationkitxestheventilationpipeswitha2°falltotheexternalwall.
— Iftheunplasteredwallisthin(24cmorless),donotcutofftheinstallationkitush
with the unplastered wall (see section 9.10 on page 27). Allow the kit to protrude
into the external thermal insulation composite system (ETICS) as this is the only
waytoallowtheventilationpipestopassfarenoughthrough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 mounting kit 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 top edge of the unit with the supply and extract air openings is roughly 30 cm
below the ceiling.
►Maintain the following minimum distances (see Fig. 4 and Fig. 5 on page 11):
— The distance between the top edge of the wall box and the ceiling must be at
least 15 cm to prevent an air short circuit.
Fig. 4: Minimum distances and options for positioning the M-WRG-II M/MB installation kit,
dimensions in millimetres
min. 50
min. 150
min. 50

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
— The distance between the side and bottom edges of the wall box and adjacent
surfaces should be at least 5 cm. The ventilation unit will be easier to operate if
thisminimumdistanceismaintained.Italsoallowstheairltertobereplaced
without obstruction.
— The lateral distance between two installation kits must not be less than 200 mm
to prevent an air short circuit between the ventilation units.
Fig. 5: Lateral minimum distance between two installation kits, dimensions in millimetres
min. 200
Dividing wall
►If the room height is greater than 2.50 m, position the ventilation unit so that the
unitcanbeoperatedandlterscanbemaintainedunaided(withoutsteps,ladders,
etc.). Alternatively you can order a ventilation unit that can be operated externally.
NOTICE
Follow the notes in Table 2 on page 20 when planning the unit. This contains informa-
tion about the types of mains and control cable for each ventilation unit and the recom-
mended operating options.
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 covered or obstructed when the room is
subsequently decorated and furnished, otherwise it cannot be operated and it will not
bepossibletoreplacetheairlters.Youshouldthereforemaintainaclearanceofat
least 15 cm in front of the ventilation unit cover.
►Make sure that the supply and extract air openings are not covered when the room is
subsequently decorated and furnished, otherwise the ventilation unit’s functions may
be impaired.

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
3.4 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.
power, gas or water).
►Make sure that the wall breakthrough does not affect the local static loading require-
ments.
►Fit a lintel if necessary.
3.5 Electrical connection
The working voltage range of the ventilation unit is between 85 V AC and 265 V AC /
50-60 Hz.
NOTICE
If the ventilation unit is not equipped with a mains connection cable and plug or other
means of disconnecting from the mains supply that has, at each pole, a contact opening
width that conforms to the conditions of overvoltage category III for complete separa-
tion, then such an isolating unit (e.g. circuit breaker) must be integrated into the perma-
nently installed electrical system in accordance with the installation regulations. The
isolatingunitmustbeidentiedassuchandeasytoaccess.

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
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.
— Theventilationunitwasush-mountedwithoutusingaush-mountinstallationkit.
— Genuineparts/genuineairlterswerenotreplacedwithgenuineparts.
— Unapproved changes were made to the installation kit or ventilation unit.
— Repairs were not carried out by Meltem or by an authorised specialist company.
— Theventilationunitwasoperatedwithoutairltersandouterwallterminals.
— Thewarrantydoesnotcoverwearingpartssuchasair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.
— Theventilationunitwasush-mountedwithoutusingaush-mountinstallationkit.
— Genuineparts/genuineairlterswerenotreplacedwithgenuineparts.
— Unapproved changes were made to the installation kit or ventilation unit.
— Repairs were not carried out by Meltem or by an authorised specialist company.
— Theventilationunitwasoperatedwithoutairltersandouterwallterminals.

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Installation manual
M-WRG-II M/MB
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
Fig. 6: Items supplied with the installation kit M-WRG-II M/MB
25
3
4
6
1
5.1 Installation kit M-WRG-II M/MB, part no. 711000
Item Description Quantity
1 Plaster cover for wall box 1x
2 Signal cover 1x
3 Cardboard insert 1x
4 Wall box 1x
5 Protective sleeve 2x
5.2 Options
Item Description Part no.
6InstallationkitllerpieceM-WRG-IIM/Fü 735003
- Plaster scrim M-WRG-II PG 735000
5.3 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, DN 100, 2 x 0.5 m,
M-WRG-LR 50
5574
- If a condensate connection is used:
Outdoor air and exhaust air pipes, DN 100, 2 x 0.5 m, exhaust
air pipe with 1/2” male thread condensate connection,
M-WRG-II LR 50-KA
735200

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
6 Dimensions of the installation kit
Fig. 7: Installation kit dimensions in millimetres
365 15
165
410
B
125
148
194,5
434,5
660
200
A
M-WRG-II M/Fü, optional
part no. 735003
A Cable inlet for the mains and control cables (a control cable is only needed for certain venti-
lation units, see Table 2 on page 20)
B The installation kit can be shortened by up to 165 mm (to no less than 200 mm).

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Installation manual
M-WRG-II M/MB
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
— Permanently elastic sealant, solvent-free if applied to polystyrene
— 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
— Wall chaser
— ExpandingfoamwithabP(nationaltechnicaltestcerticateoftheDIBt)approval
(“exact gap” foam is recommended)
— Saw for cutting the ventilation pipes to length
— Styrofoam saw
— Spirit level
NOTICE
If the installation kit is to be retrospectively installed in a solid wall, you will need addi-
tional tools to break through the wall.
8 General installation instructions
NOTICE
— The unit must be installed in accordance with the generally acknowledged rules of
technology.
— 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-II M/MB
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 Breaking through the wall
The wall breakthrough can either be included when planning a new build or subsequently
made in the solid wall.
Fig. 8: Wall breakthrough for installation kit withoutllerpiece,dimensions
in millimetres
460
680
min. 50
200
410
approx. 300 (min. 150)
Fig. 9: Wall breakthrough for installation kit withllerpiece,dimensionsin
millimetres
460
680
min. 50
approx. 300 (min. 150)

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Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9.1.1 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) for installation kit withoutllerpiece
M-WRG-II M/Fü
— Complete wall breakthrough (see Fig. 9) for installation kit withllerpiece
M-WRG-II M/Fü
9.1.2 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.
power, gas or water).
►Make sure that the wall breakthrough does not affect the local static loading require-
ments.
►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 on page 17) for installation kit
withoutllerpieceM-WRG-IIM/Fü
— Complete wall breakthrough (see Fig. 9 on page 17) for installation kit withller
piece M-WRG-II M/Fü
9.2 Chasing out channels for connecting cables
►Chase out a channel for the mains
and control cables (item 1 in Fig. 10).
NOTICE
The wall channel in Fig. 10 is shown
by way of example. An alternative wall
channel is shown as dashed lines
(item 2 in Fig. 10). For the subsequent
electrical installation work, we recom-
mend running the mains and control
cables from the left at the wall break-
through.
Fig. 10: Chasing out channels for connecting cables
1
2

- 19 -
Installation manual
M-WRG-II M/MB
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 Running the mains and control 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.
►Before starting installation or maintenance work, disconnect the mains cable for
connecting to the ventilation unit on all poles from the mains supply.
► Observethevesafetyrules(DINVDE0105-100,EN50110-1)forworkingonelec-
trical systems:
— Disconnect from mains (all-pole disconnection of a system from live parts)
— Secure against reconnection
— Check that the system is voltage-free
— Earth and short-circuit
— Cover or block off access to adjacent live parts
►Run the mains cable (item 1 in
Fig. 11) and the control cable, if
required (item 2 in Fig. 11). The
cables should extend roughly
250 mm beyond the wall.
►Fix the mains cable and the control
cable (if required) in position.
NOTICE
— Table 2 on page 20 and Table 3 on page 21 contain overviews of the recom-
mended types of mains cable and control cable.
— A control cable is only needed for certain types of ventilation unit.
— The ventilation unit is equipped with an external control input as standard. The
mains cable NYM-J 4 x 1.5 mm2is needed if this control input is used.
Fig. 11: Running the connecting cables, dimensions in
millimetres
260
215
80
250
1 2
+

- 20 -
Installation manual
M-WRG-II M/MB
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
9.3.1 Cable types
Part no. Type of ventilation
unit
Type of mains cable Type of control cable
700000
700001
700002
701000
701001
701002
M-WRG-II P
M-WRG-II P-F
M-WRG-II P-FC
M-WRG-II E
M-WRG-II E-F
M-WRG-II E-FC
NYM-J3x1.5mm2
or
NYM-J4x1.5mm2(*)
No control cable
700010
700011
700012
701010
701011
701012
M-WRG-II P-T
M-WRG-II P-T-F
M-WRG-II P-T-FC
M-WRG-II E-T
M-WRG-II E-T-F
M-WRG-II E-T-FC
NYM-J3x1.5mm2
or
NYM-J4x1.5mm2(*)
— InControl pushbutton
sensor:
J-Y(St)Y10x2x0.6mm/
J-Y(St)Y10x2x0.8mm
— Three-step rotary switch:
J-Y(St)Y4x2x0.6mm/
J-Y(St)Y4x2x0.8mm
— BCD encoding:
J-Y(St)Y4x2x0.6mm/
J-Y(St)Y4x2x0.8mm
700020
700021
700022
701020
701021
701022
M-WRG-II P-M
M-WRG-II P-M-F
M-WRG-II P-M-FC
M-WRG-II E-M
M-WRG-II E-M-F
M-WRG-II E-M-FC
NYM-J3x1.5mm2
or
NYM-J4x1.5mm2(*)
Building management
system, Modbus, Loxone,
KNX:
J-Y(St)Y2x2x0.6mm/
J-Y(St)Y2x2x0.8mm
700030
700031
700032
701030
701031
701032
M-WRG-II P-S 485
M-WRG-II P-S 485-F
M-WRG-II P-S 485-FC
M-WRG-II E-S 485
M-WRG-II E-S 485-F
M-WRG-II E-S 485-FC
NYM-J3x1.5mm2
or
NYM-J4x1.5mm2(*)
Touch Control network:
J-Y(St)Y2x2x0.6mm/
J-Y(St)Y2x2x0.8mm
Table 2: Types of mains cable and control cable for each ventilation unit type
(*) If the external control input is used