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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

V E N T I L A T I O N & H E A T R E C O V E R Y

7

Tools and equipment required

— Permanently elastic sealant, solvent-free if applied to polystyrene

— Wedges for fixing the wall box, 8x

alternatively use inflatable air cushions, 4x, e.g. Amo-Bag from Würth,

part no. 07156780

— If necessary, wedges for fixing the filler piece, 4x

alternatively use inflatable air cushions, 2x, e.g. Amo-Bag from Würth,

part no. 07156780

— Wall chaser

— Expanding foam with abP (national technical test certificate 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, profiles or sealants

such that they offer sufficient 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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Summary of Contents for M-WRG-II M

Page 1: ...TILATION THE RIGHT WAY V E N T I L A T I O N H E A T R E C O V E R Y INSTALLATION MANUAL HOME VENTILATION WITH HEAT RECOVERY Flush mount installation kit with plastering trim solid construction M WRG II M MB for flush mounting ventilation units from the M WRG II series Part no 744001EN Week 17 2019 EN ...

Page 2: ... 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 flush mounting the installation kit 12 3 5 E...

Page 3: ...er 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...

Page 4: ...tructions 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 flush mount the M WR...

Page 5: ... 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 th...

Page 6: ...mbols used This symbol indicates an action to be taken This symbol indicates a list 1 8 Supplementary documents Manual Part no Installation manual for flush mount installation kit M WRG II M frame construction 744002EN Installation manual for flush mount installation kit M WRG II M U2 744003EN Installation manual for M WRG II ventilation units 744004EN Installation manual for outer wall terminals ...

Page 7: ...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 t...

Page 8: ...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 fulfilled 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 usin...

Page 9: ...ing both sensible and latent heat from the supply air As a result the air is dehumidified 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 pos...

Page 10: ... 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 fixed in place When fitting 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 mounti...

Page 11: ... that the unit can be operated and filters 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 acces...

Page 12: ...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 o...

Page 13: ...or ventilation unit Repairs were not carried out by Meltem or by an authorised specialist company The ventilation unit was operated without air filters and outer wall terminals The warranty does not cover wearing parts such as air filters 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 ...

Page 14: ... 2 Signal cover 1x 3 Cardboard insert 1x 4 Wall box 1x 5 Protective sleeve 2x 5 2 Options Item Description Part no 6 Installation kit filler 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 flush mount installation These must be ordered separately Item Description Part no Outdoor air and exhaust air pip...

Page 15: ...E C O V E R Y 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 ...

Page 16: ... 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 Connectio...

Page 17: ...g 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 filler piece dimensions in millimetres 460 680 min 50 200 410 approx 300 min 150 Fig 9 Wall breakthrough for installation kit with filler piece dimensions in millimetres 460 680 min 50...

Page 18: ...ging 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 ...

Page 19: ...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 F...

Page 20: ...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 Modb...

Page 21: ...n be ventilated in accordance with DIN 18017 3 in combination with the M WRG II O NOF option part no 721004 9 3 3 Option M WRG II O EGG AUS Part no Option M WRG II O EGG AUS Type of control cable 721003 Unit OFF input e g via an external smoke detector or window contact J Y St Y 2x2x0 6 mm J Y St Y 2x2x0 8 mm Potential free fault indicator output J Y St Y 2x2x0 6 mm J Y St Y 2x2x0 8 mm Table 3 Opt...

Page 22: ...h the wall box item 5 in Fig 14 fully into the wall breakthrough 9 5 Inserting the cardboard insert and plaster cover Insert the cardboard insert item 1 in Fig 15 into the wall box item 3 in Fig 15 as far as it will go Insert the plaster cover item 2 in Fig 15 into the wall box item 3 in Fig 15 as far as it will go NOTICE When the gaps around the wall box are filled with foam see section 9 7 on pa...

Page 23: ...e wall box is perpendicular as this is the only way to ensure that any condensa tion will be carried outside by the 2 pipe fall Fix the filler piece if needed to the external wall with wedges or air cushions NOTICE 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 sufficiently out of the solid wall If you do no...

Page 24: ...er cover item 1 in Fig 15 on page 22 is inserted before filling with foam Check that the wall box is seated correctly Once you have used the foam you will not be able to align it 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 filling material Once the foam has hardened remove any wedges tha...

Page 25: ...n Fig 19 for retaining the condensate The condensate drain is not needed for M WRG II E units under the following conditions 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 NOTICE Note the following points when creating ...

Page 26: ... 20 to the installation kit and the solid wall NOTICE Applying plaster scrim will minimise subsequent cracking of the plaster Plaster the internal wall The plaster forms the airtight layer on the internal wall The expanding foam does not act as an airtight layer When plastering make sure that the plaster ends flush with the plastering trim The following situations are not permitted The plastering ...

Page 27: ...es with a 2 fall to the external wall If the unplastered wall is thin 24 cm or less do not cut off the wall box flush with the unplastered wall Allow the wall box to protrude into the external thermal insula tion composite system ETICS as this is the only way to allow the ventilation pipes to pass far enough through and so be fixed in place When fitting the ETICS make sure that the ventilation pip...

Page 28: ...26 to the outside of the wall box to the masonry and to the facade insulation NOTICE Applying plaster scrim will minimise subsequent cracking of the plaster Plaster the external wall The plaster forms the windtight layer on the external wall 9 12 Preparing the installation kit for connecting the ventilation pipes Work on the internal wall Remove the signal cover item 1 in Fig 27 on page 29 Use a b...

Page 29: ...9 On the outer wall mark the excess length of the ventilation pipes to suit the outer wall terminal see Table 4 Outer wall terminal Excess Stainless steel pod M WRG II ES 5 10 mm from the plastered external wall Stainless steel pipe set M WRG ESR 25 30 mm from the plastered external wall Table 4 Excess length of the ventilation pipes from the external wall Remove the ventilation pipes from the ope...

Page 30: ...they end flush with the inside of the installation kit item 2 in Fig 30 Remove any excess sealant 9 15 Sealing ventilation pipes on external wall NOTICE If the external plaster encloses the ventilation pipes all round and without gaps you can skip the steps described in this section Chamfer both pipe breakthrough edges item 1 in Fig 31 to roughly 5x45 to create enough space for the sealing joints ...

Page 31: ...ilation unit must not be used without the outer wall terminal for safety reasons Attach the outer wall terminal to the external wall Installation of the outer wall terminal is described in a separate installation manual see 1 8 Supplementary docu ments on page 6 10 Installing the ventilation unit NOTICE Installation of the ventilation unit in the installation kit is described in the M WRG II Venti...

Page 32: ...so we cannot guarantee complete accuracy The information in this publication is regularly checked and any necessary corrections are made in subsequent editions Copyright Meltem Wärmerückgewinnung GmbH Co KG We reserve the right to make changes Meltem Wärmerückgewinnung GmbH Co KG Am Hartholz 4 D 82239 Alling Germany Tel 49 0 8141 404179 0 Fax 49 0 8141 404179 9 Internet http www meltem com Email i...

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