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Installation manual

M-WRG-II M

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

6

Dimensions of the installation kit

Fig. 9: Installation kit dimensions in millimetres

365

165

410

B

135

120,5

208,5

125

148

194,5

434,5

660

A

200

208,5

117,5

M-WRG-II M/Fü,

optional,

part no. 735003

M-WRG-II AD-UP,

optional,

part no. 731003

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 26)

B

The installation kit can be shortened by up to 165 mm (to no less than 200 mm).

NOTICE

With the M-WRG-II WM-M option, part no. 720003, the kit can be shortened at the factory to a

minimum length of 185 mm.

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Summary of Contents for 710000

Page 1: ...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 M WRG II M frame construction for flush mounting ventilation units from the M WRG II series with optional ductwork connection for connecting flexible pipes or flat ductwork Part no 744002EN Week 44 2020 EN ...

Page 2: ...tioners 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 12 3 4 Additional planning notes when connecting a flexible pipe or flat ductwork system using the ductwork connection adapter M WRG II AD UP 12 3 4 1 Fire safety and soundproofing 12 3 4 2 Flat ductwork 12 3 ...

Page 3: ...er 30 9 6 Filling gaps around the wall box with insulating material 31 9 7 Connecting the wall box to the vapour barrier 31 9 8 Inserting M WRG II AD UP ductwork connection adapter and filling gaps with foam only when connecting a flat ductwork or flexible pipe system 32 9 9 Inserting flat ductwork into ductwork connection adapter only when connecting a flat ductwork system 33 9 10 Joining flexibl...

Page 4: ...nstructions on page 7 and 3 Planning notes on page 10 carefully 1 2 Description This manual describes how to flush mount the M WRG II M installation kit item 1 in Fig 1 in frame construc tions In a new build or a retrofit if a complete wall aperture is planned for the installation kit the optional filler piece M WRG II M Fü item 2 in Fig 1 can be used to pack out the wall Flush mount flat ductwork...

Page 5: ...ning 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 o...

Page 6: ...rame construction Week 44 2020 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 M WRG II ventilation units 744004EN Installation manual for outer wall terminals M WRG II ES M WRG II KSR 744005EN Installation manual for window reveal installation kit in preparation 74400...

Page 7: ...ld 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 fire safety requirements when planning and installing the unit 2 2 2 Operation with fireplaces An a...

Page 8: ... 12 on page 36 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 using...

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: ...n place When fitting the ETICS make sure that the ventilation pipes maintain their 2 fall 3 2 Positioning the ventilation unit indoors Fig 4 Minimum distances and options for positioning the M WRG II M installation kit dimensions in millimetres min 50 min 150 without ductwork connection min 300 with ductwork connection min 50 If a condensate connection see section 9 12 on page 36 is used the minim...

Page 11: ...The distance between the side and bottom edges of the wall box and adjacent surfaces should be at least 50 mm exception if a condensate connection is used see in Fig 4 on page 10 The ventilation unit will be easier to operate if this minimum distance is maintained It also allows the air filter to be replaced without obstruction The lateral distance between two wall boxes must not be less than 200 ...

Page 12: ...notes when connecting a flexible pipe or flat ductwork system using the ductwork connection adapter M WRG II AD UP 3 4 1 Fire safety and soundproofing WARNING Observe the relevant fire safety and soundproofing regulations Observe the regulations concerning the fire behaviour of building materials and components as defined in DIN 4102 EN 13501 Observe the regulations concerning soundproofing in bui...

Page 13: ...flush 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 aperture e g power gas or water Make sure that the wall aperture does not affect the local static loading require ments If you are installing the kit retrospectively run the flexible pipes in a suspended ceiling 3 6 Electrical connection The wo...

Page 14: ... 8 10 1 2 9 3 4 5 6 7 10 4 100 160 15 15 15 12 5 317 5 11 11 12 5 11 7 10 6 15 A A B B C Option M WRG II M Fü filler piece Note the excess pipe length specified in the installation man ual for the outer wall terminals M WRG II ES 5 10 mm 290 M WRG II M shortened List of components Item Description 1 15 mm external render 2 Wood fibre insulation 100 mm 3 15 mm OSB board 4 160 x 60 mm framing member...

Page 15: ...58 76 210 84 102 Cutouts in the upper batten for flat ductwork Cutouts in the lower batten for flat ductwork Option M WRG II M Fü filler piece Note the excess pipe length specified in the installation man ual for the outer wall terminals M WRG II ES 5 10 mm 290 M WRG II M shortened List of components Item Description 1 15 mm external render 2 Wood fibre insulation 100 mm 3 15 mm OSB board 4 160 x ...

Page 16: ...scribed in the installation manual The ventilation unit was flush mounted without using a flush mount installation kit Genuine parts genuine air filters 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 filters and o...

Page 17: ... 1x 5 Protective sleeve 2x 5 2 Options Item Description Part no 6 Installation kit filler piece M WRG II M Fü 735003 7 Ductwork connection adapter for flush mount installation kit for the M WRG II series 731003 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 Descript...

Page 18: ...tres 365 165 410 B 135 120 5 208 5 125 148 194 5 434 5 660 A 200 208 5 117 5 M WRG II M Fü optional part no 735003 M WRG II AD UP optional part no 731003 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 26 B The installation kit can be shortened by up to 165 mm to no less than 200 mm NOTICE With the M WRG II WM M optio...

Page 19: ...ve tape Perforated tape for fixing flat ductwork or flexible pipes 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 Saw for cutting the channels in the frame construction Styrofoam saw Spirit level 8 General installation instructions NOTICE The unit must be installed in accordance with the...

Page 20: ...in the construction drawing Incorporate two wooden battens into the frame construction at the planned installation position The lower batten item 1 in Fig 10 acts as a support NOTICE Use a spirit level item 2 in Fig 10 to check that the lower batten is exactly horizontal as this is the only way to ensure that any condensa tion will be carried outside by the 2 pipe fall in the installation kit item...

Page 21: ... flat ductwork connection on the extract air side Various sample configurations are illustrated in section 9 2 1 and section 9 2 2 Saw a channel 215 mm wide and 105 mm deep in the upper batten item 1 in Fig 12 for the ductwork connection adapter on the extract air side Saw a channel 118 mm wide and 60 mm deep in the ceiling joist item 2 in Fig 12 for the extract air duct Check that the installatio...

Page 22: ...the two flexible pipes of a flexible pipe connection in parallel to one another The minimum distance between the flexible pipes must not be less than 3x the pipe diameter 9 2 1 Example of a flat ductwork connection on the extract air side multi room version only when connecting a flat ductwork system Create a channel 118 mm wide and 60 mm deep see Fig 13 for the extract air duct item 1 in Fig 13 C...

Page 23: ... the extract air side supply air side or on both sides Example Flexible pipe connection on the extract air side item 1 in Fig 14 Example Flexible pipe connection on the supply air side item 1 in Fig 15 Create one channel for the flexible pipe 170 mm wide and 85 mm deep as far as the flexible pipe outlet in the ceiling Check that the installation kit fits easily into the wall aperture Fig 14 Creati...

Page 24: ...rve the following recommendations when using flexible pipes to avoid unnec essary pressure losses in the pipes Always connect two flexible pipes to the flexible pipe connection As far as possible use flexible pipes with a diameter of 75 mm The total length of each flexible pipe should not exceed 10 m Minimise the number of bends in the flexible pipes Run the two flexible pipes of a flexible pipe c...

Page 25: ... 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 17 and the control cable if required item 2 in Fig 17 The cables should extend roughly 250 mm beyond the wall ...

Page 26: ...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...

Page 27: ...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 Option M WRG II O EGG AUS The connection board for the M WRG II O EGG AUS option has ...

Page 28: ... if required item 6 in Fig 20 through the cable inlet in the wall box item 7 in Fig 20 Insert the wall box between the two battens The structure of the subsequent internal wall cladding will determine how far the wall box needs to protrude above the batten This installation example shows the following configuration The internal wall cladding consists of a 15 mm thick OSB board item 1 in Fig 21 and...

Page 29: ... cladding If the top layer of the internal wall cladding item 2 in Fig 21 item 4 in Fig 22 is less than 15 mm thick the 15 mm gap item 5 in Fig 21 item 3 in Fig 22 between the front surface of the wall box and the inserted ventilation unit is not completely filled resulting in a shadow joint item 6 in Fig 22 This can be grout ed If the top layer of the internal wall cladding item 2 in Fig 21 item ...

Page 30: ... box item 3 in Fig 23 as far as it will go Insert the plaster cover item 2 in Fig 23 into the wall box item 3 in Fig 23 as far as it will go NOTICE There is a risk that the wall box will be deformed during the remainder of the installation process if the plaster cover is not inserted If this happens it will not be possible to insert the ventilation unit into the wall box Check that the red signal ...

Page 31: ...n Fig 17 or using another suitable filling material 9 7 Connecting the wall box to the vapour barrier The inner OSB board item 1 in Fig 25 is the vapour barrier and airtight layer The OSB board must be connected to the wall box item 2 in Fig 25 using a suitable and approved adhesive tape e g Rissan from SIGA Other wall structures may require different procedures Fig 25 Inner OSB board as the vapou...

Page 32: ...n the top of the wall box on the extract air side supply air side or on both sides as shown in the plans Push the ductwork connection adapter in until the flat ductwork elbow item 3 in Fig 26 item 1 in Fig 27 ends flush with the subse quent internal wall cladding item 2 in Fig 27 The flat ductwork elbow may be shortened if necessary Fill the gaps between the ductwork connection adapter and channel...

Page 33: ...n Fig 28 Insert a flat duct M WRG FK F item 5 in Fig 28 part no 5590 or the fitting adapter M WRG FSA lang part no 5375 00 into the flat ductwork bend Seal the join with a layer of sealing tape 30 mm wide item 6 in Fig 28 Push the flat ductwork bend item 3 in Fig 28 together with the attached flat ductwork element item 5 in Fig 28 back into the ductwork connection adapter item 4 in Fig 28 Push the...

Page 34: ...in Fig 29 M WRG FRA75 part no 5056 00 75 or M WRG FRA63 part no 5056 00 63 Insert the fitting adapter M WRG FSA lang part no 5375 00 item 7 in Fig 29 into the flat ductwork bend item 3 in Fig 29 NOTICE Make sure that you insert the fitting adapter so that the short side points up see item 7 in Fig 29 Attach the flexible pipe adapter item 6 in Fig 29 to the fitting adapter item 7 in Fig 29 and seal...

Page 35: ...o the openings in the flexible pipe adapter item 5 in Fig 30 Make sure that the first groove on the flexible pipe item 2 in Fig 30 engages with the locking ring item 3 in Fig 30 on the flexible pipe adapter Recommendation Seal the join with a layer of sealing tape 30 mm wide item 4 in Fig 30 Insert the assembled flexible pipe connectors item 1 in Fig 31 into the ductwork connection adapter item 2 ...

Page 36: ... Fig 32 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 t...

Page 37: ... the OSB board item 3 in Fig 33 with the same dimensions as the flat ductwork elbow item 4 in Fig 33 only when connecting a flat ductwork or flexible pipe system Make a cutout in the plasterboard item 5 in Fig 33 with the same dimensions as the plaster cover item 1 in Fig 33 If necessary make a cutout in the plasterboard item 5 in Fig 33 with the same dimensions as the flat ductwork elbow item 4 i...

Page 38: ...h 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 pipes mai...

Page 39: ...h with the subsequent plaster coat The protective sleeves provide the bonding surface for the external plaster NOTICE Prepare the substrate suitably before plastering Apply the plaster scrim item 2 in Fig 36 and Fig 37 to the outside of the wall box external wall and or facade insulation NOTICE Applying plaster scrim will minimise subsequent cracking of the plaster Plaster the external wall The pl...

Page 40: ...cting the ventilation pipes Work on the internal wall Remove the signal cover item 1 in Fig 38 Use a blade to score the plaster on the inside of the plastering trim item 2 in Fig 38 Carefully remove the plaster cover item 3 in Fig 38 and the cardboard insert behind it Work on the external wall Remove the two protective sleeves item 1 in Fig 39 Fig 38 Installation kit plastered on the inside 1 2 3 ...

Page 41: ...ilation pipes to suit the outer wall terminal see Table 4 Remove the ventilation pipes from the openings in the installation kit Shorten the ventilation pipes to the marked length Deburr the inner and outer ends of the ventilation pipes NOTICE If you do not deburr the ventilation pipes there is a risk of damaging the seals at the ventilation unit and outer wall terminal Outer wall terminal Excess ...

Page 42: ...hey end flush with the inside of the installation kit item 2 in Fig 41 Remove any excess sealant 9 19 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 42 to roughly 5x45 to create enough space for the sealing joints w...

Page 43: ...lation 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 ventil...

Page 44: ...heless still be differences 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 8141 404179 0 Fax 49 8141 404179 9 Internet www...

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