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Installation manual 

M-WRG-II ventilation units

- 32 -

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

10.10  Plastering the internal wall

NOTICE

Prepare the substrate suitably before 

plastering.

 

►

Before plastering, close off both ends 

of the ventilation pipes with adhesive 

tape (item 1 in Fig. 28) or another 

suitable material.

 

►

Trim the expanding foam (item 2 in 

Fig. 28) flush with the unplastered 

wall.

 

►

Plaster the cable ducts.

 

►

Plaster the internal wall as far as the 

ventilation pipes.  

The plaster forms the airtight layer on the internal wall. The expanding foam does not 

act as an airtight layer.

NOTICE

When the ventilation unit is subsequently surface-mounted, the internal wall is already 

plastered.

 

►

In this case, remove the expanding foam as far as the unplastered wall and then 

plaster the gap around the ventilation pipe. The plaster forms the airtight layer on 

the internal wall. The expanding foam does not act as an airtight layer.

10.11  Cutting ventilation pipes on internal wall to length

 

►

Cut the ventilation pipes (item 1 in 

Fig. 29) to length on the internal 

wall so that they end flush with the 

internal plaster.

 

►

Deburr the ventilation pipes on the 

internal wall. 

NOTICE

If you do not deburr the ventilation 

pipes there is a risk of damaging the 

seals at the ventilation unit.

Fig. 28:  Plastering the internal wall

1

2

Fig. 29:  Cutting ventilation pipes on internal wall to 

length

1

Содержание M-WRG-II

Страница 1: ...A T R E C O V E R Y INSTALLATION MANUAL HOME VENTILATION WITH HEAT RECOVERY M WRG II ventilation units Surface mount installation Surface mount installation with ductwork connection Flush mount installation Flush mount installation with ductwork connection U2 integrated into wall installation with ductwork connection Part no 744004EN Week 13 2020 EN ...

Страница 2: ... Operation with fireplaces 9 2 2 3 Installation in wet areas 10 2 2 4 Condensate drain 10 2 2 5 Starting and using the ventilation unit 10 2 3 Notes on using the ventilation units 10 2 4 Note on use in conjunction with room air conditioners 11 2 5 Intended use 11 3 Planning notes 12 3 1 Surface mount installation 12 3 1 1 Requirements for the installation wall 12 3 1 2 Positioning the ventilation ...

Страница 3: ... cables 23 10 Surface mount installation 24 10 1 Marking positions of core drill holes with drilling template 24 10 2 Drilling core drill holes 25 10 3 Drilling holes for dowels and making marks for connecting cables 25 10 4 Condensate drain on the exhaust air pipe 26 10 5 Chasing out channels for connecting cables 27 10 6 Inserting the ventilation pipes 27 10 7 Drilling the holes for the outer wa...

Страница 4: ...he mains cable and control cable if used 40 11 8 Connecting the M WRG II O EGG AUS option 41 11 9 Fixing the electronics compartment cover plate 41 11 10 Attaching the unit cover pull out straps for U2 integrated into wall installation only 42 11 11 Attaching the unit cover to the ventilation unit 42 11 12 Attaching the U2 cover plate for U2 integrated into wall installation only 43 11 13 Connecti...

Страница 5: ...roperty 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 section 2 Safety instructions on page 9 carefully 1 2 Description This manual describes the installation of the following variants of decentralised ventilation units from the M WRG II series...

Страница 6: ...ollowing qualifications Training in the installation and commis sioning 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 EU declaration of conformity The ventilation units from the M WRG II P and M WRG II E series manufactured by Mel...

Страница 7: ...he ventilation unit before it is installed in Germany This approval can be provided upon request or can be downloaded from our website at www meltem com waermerueckgewinnung downloads see also the QR code on the back page of these instructions The approval number is Z 51 3 431 see item 1 in Fig 7 For installation outside Germany the national regulations applicable in your country should be followe...

Страница 8: ...anual Date 3rd edition Installation manual for M WRG II ventilation units Week 13 2020 EN 1 10 Explanation of the symbols used This symbol indicates an action to be taken This symbol indicates a list 1 11 Supplementary documents Manual Part no Installation manual for flush mount installation kit with plastering trim solid construction M WRG II M MB 744001EN Installation manual for flush mount inst...

Страница 9: ...ided 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 fire safety requirements when planning and installing the unit 2 2 2 Operation with firepla...

Страница 10: ...ction 10 4 on page 26 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 11 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 a...

Страница 11: ...of removing 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 perpendic...

Страница 12: ... mount installation is possible even with very thin walls e g installation on cladding panels The minimum thickness will be determined by the outer wall terminal used Outer wall terminal Minimum thickness of the wall or cladding panels M WRG II ES 30 mm M WRG ESR 20 mm M WRG II KSR 20 mm Table 2 Minimum thickness of the external wall For wall structures including internal plaster external render a...

Страница 13: ...etween two ventilation units dimensions in millimetres min 200 Dividing wall min 50 min 150 NOTICE Follow the notes in Table 4 on page 30 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 1 3 Unrestricted access to the ventilation unit The ventilation unit must always be freely accessible ...

Страница 14: ...it breaker must be integrated into the perma nently installed electrical system in accordance with the installation regulations The isolating unit must be identified as such and easy to access 3 2 Flush mount installation An M WRG II flush mount installation kit is needed to flush mount the ventilation unit optionally with ductwork connection Also read and follow the Planning notes section of the ...

Страница 15: ...n 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 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 m...

Страница 16: ... 4 D 82239 Alling info meltem com 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 5 Dimensions 5 1 Ventilation unit without duct adapters Fig 9 M WRG II ventilation unit without duct adapters dimensions in millimetres 40 364 590 575 58 160 218 125 149 210 194 5 ...

Страница 17: ...ION 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 5 2 Ventilation unit with duct adapters for surface mount and U2 integrated into wall installation Fig 10 M WRG II ventilation unit with duct adapters for surface mount and U2 integrated into wall installation dimensions in millimetres 40 218 610 590 575 58 160 125 149 12 208 5 194 5 210 364 ...

Страница 18: ...ILATION 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 5 3 Ventilation unit with duct adapter for flush mount installation with ductwork connection Fig 11 M WRG II ventilation unit with duct adapter for flush mount installation with ductwork connection dimensions in millimetres 40 364 590 575 58 160 218 80 149 125 208 5 210 194 5 710 120 ...

Страница 19: ...tion unit Fig 12 Items supplied with the M WRG II ventilation unit 1 2 3 4 5 6 Item Description Quantity 1 Ventilation unit 1x 2 Dowel S8 4x 3 Centring guide 4x 4 Washer 5 3 x 10 mm 4x 5 Cross head screw 5 x 120 mm for surface mount installation 4x 6 Cross head screw 5 x 100 mm for flush mount installation 4x Operating instructions 1x Installation manual 1x Installation manual for connecting the c...

Страница 20: ...ing surface mount flat ductwork for surface mount units connection via fitting with sleeve or flat ductwork bracket M WRG FK W 6 2 2 Surface mount installation for units from the M WRG II E series Type Part no Description M WRG II M AP 735002 Surface mount installation kit consisting of drilling templates for unit and outer wall terminal stainless steel pod including outdoor air and exhaust air pi...

Страница 21: ...ation unit with cover removed Item Designation 1 Extract air grille 2 Extract air filter with filter ring 3 Cover plate for top electronics compartment 4 Mains switch 5 Cover plate for bottom elec tronics compartment 6 Outdoor air filter with filter cover 7 Supply air grille 7 3 Outer wall terminal Fig 15 shows the M WRG II ES outer wall terminal by way of example Item Designation 1 Opening for bl...

Страница 22: ...es to length Hammer drill with 8 mm masonry bit Set of slotted screwdrivers Torx screwdriver TX10 Spirit level 8 2 Flush mount installation Set of cross head screwdrivers Set of slotted screwdrivers Torx screwdriver TX10 9 General installation instructions NOTICE The unit must be installed in accordance with the generally acknowledged rules of technology Connections with adjacent components must b...

Страница 23: ...llow the steps in section 11 Installing the ventilation unit from page 34 The ventilation unit is installed once the work described in the installation manual for the U2 flush mount installation kit is complete see section 1 11 Supplementary docu ments on page 8 9 2 Electrically disconnecting mains cables During installation the ventilation unit is connected to the power supply with a mains cable ...

Страница 24: ...00 mm from the ceiling and at least 50 mm from the side wall Use the spirit level to align the drilling template item 3 in Fig 16 Fix the drilling template in place with adhesive tape item 4 in Fig 16 Using the spirit level check again that the drilling template is aligned Mark the outlines item 1 in Fig 17 of the pre punched contours for the core drill holes on the internal wall Mark the six notc...

Страница 25: ...xhaust air pipe 10 3 Drilling holes for dowels and making marks for connecting cables Position the drilling template item 1 in Fig 19 precisely over the two core drill holes Mark the four holes item 2 in Fig 19 for the dowels for fixing the ventilation unit to the internal wall Mark the position of the cable outlet for the mains and control cables item 3 in Fig 19 for the ventilation unit This mar...

Страница 26: ...em 4 in Fig 20 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 11 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 cr...

Страница 27: ...hesive tape 10 6 Inserting the ventilation pipes Fig 22 Ventilation pipes on the inside of the wall 1 1 3 3 3 3 2 Fig 23 Ventilation pipes on the outside of the wall 1 NOTICE Prepare the breakthrough surfaces suitably for the ventilation pipes Push the two ventilation pipes item 1 in Fig 22 through the core drill holes so that they protrude on both the inside and the outside of the wall The ventil...

Страница 28: ...s length 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 Plastic pipe set M WRG II KSR 20 27 mm from the plastered external wall Table 3 Excess length of ventilation pipes protruding from the external wall If necessary correct the excess length by moving the ventilation pipe 10 8 Fixing ventilatio...

Страница 29: ... 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 25 and the control cable if used item 2 in Fig 25 The cables should extend roughly 250 mm ...

Страница 30: ...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 4 Types of mains cable and control cable f...

Страница 31: ... part no 721005 M WRG II O EST 2 without run on time part no 721006 Windowless rooms can be ventilated in accordance with DIN 18017 3 in combination with the M WRG II O NOF option part no 721004 10 9 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 P...

Страница 32: ...al wall The expanding foam does not act as an airtight layer NOTICE When the ventilation unit is subsequently surface mounted the internal wall is already plastered In this case remove the expanding foam as far as the unplastered wall and then plaster the gap around the ventilation pipe The plaster forms the airtight layer on the internal wall The expanding foam does not act as an airtight layer 1...

Страница 33: ...ling joints with permanently elastic sealant Fill the chamfers of the pipe break through edges all round with perma nently elastic sealant on the outside NOTICE Only use a solvent free sealant if the sealant is applied to polystyrene 10 13 Attaching the outer wall terminal WARNING Do not run without the outer wall terminal Please note that the ventilation unit must not be used without the outer wa...

Страница 34: ...ake the four 5 x 100 mm or 5 x 120 mm cross head screws four washers and four centring guides see Fig 12 on page 19 from the ventilation unit set NOTICE Note the following points when selecting the cross head screws Use the 5 x 120 mm long cross head screws for surface mount installation Use the 5 x 100 mm long cross head screws for flush mount optionally with ductwork connection or U2 integrated ...

Страница 35: ...m 3 in Fig 34 on the air spigots 11 4 Removing the electronics compartment cover plate Use the screwdriver to loosen the Torx screw item 1 in Fig 35 on the electronics compartment cover plate item 2 in Fig 35 Remove the electronics compartment cover plate 11 5 Threading in cables through the opening Hold the ventilation unit in front of the installation location Thread the mains cable into the ope...

Страница 36: ... head screws item 3 in Fig 37 to fix the ventilation unit in the dowels item 4 in Fig 37 on the wall Lightly tighten the screws using a diagonal sequence NOTICE Use a spirit level to align the venti lation unit Tighten the cross head screws using a diagonal sequence 11 6 2 Flush mount installation Carefully push the ventilation unit as far as it will go into the wall box item 1 in Fig 38 Use the f...

Страница 37: ...rward and out Carefully push the ventilation unit as far as it will go into the wall box item 1 in Fig 39 Use the four 5 x 100 mm cross head screws item 2 in Fig 39 to fix the venti lation unit Lightly tighten the screws using a diagonal sequence Tighten the cross head screws using a diagonal sequence Remove any soiling e g remaining plaster from the ductwork connections in the wall item 1 in Fig ...

Страница 38: ...ly air side item 5 in Fig 42 and the air baffle cover on the extract air side item 6 in Fig 42 Ductwork connection on the extract air and supply air sides Remove the wall seal on the extract air side item 3 in Fig 42 and supply air side item 5 in Fig 42 Both air baffle covers items 4 and 6 in Fig 42 remain in the duct adapter Attach the duct adapter item 1 in Fig 43 so that the tabs item 2 in Fig ...

Страница 39: ...ews item 2 in Fig 44 to fix the ventilation unit Lightly tighten the screws using a diag onal sequence Tighten the cross head screws using a diagonal sequence Take the two duct adapters from the U2 adapter kit item 1 in Fig 46 Check that the seals item 2 in Fig 46 are seated correctly at the top of the duct adapters Attach the two duct adapters so that the tabs item 3 in Fig 46 line up with the re...

Страница 40: ...ms 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 NOTICE The ventilation unit may be damaged if the mains or control cable is connected incorrectly This will also invalidate the warranty No protective earth PE conductor is required Con...

Страница 41: ...am and description in section 10 9 3 on page 31 11 9 Fixing the electronics compartment cover plate WARNING The unit must not be used without the electronics compartment cover plate Please note that the ventilation unit must not be used without the elec tronics compartment cover plate The electronics compartment cover plate is designed to prevent contact with live parts Insert the electronics comp...

Страница 42: ...it cover pull out straps will make it easier to lift off the unit s cover at a later date e g to change the air filters 11 11 Attaching the unit cover to the ventilation unit Hold the ventilation unit cover with both hands and tilt the top edge of the cover towards the ventilation unit Insert the tabs item 1 in Fig 51 of the unit cover into the openings on the top of the ventilation unit Lightly p...

Страница 43: ... back of the cover plate against the top edge of the wall box Carefully lower the cover plate The recesses item 2 in Fig 52 on the retaining plates slide around the pins item 3 in Fig 52 of the wall box frame CAUTION Risk of injury from falling cover plate Slide the cover plate down very carefully and make sure that it is engaged securely 11 13 Connecting flat ducts to the ventilation unit for sur...

Страница 44: ... A T I O N H E A T R E C O V E R Y 11 14 Attaching the cover to the duct adapter for flush mount installation with ductwork connection only Place the cover item 1 in Fig 54 on the duct adapter item 2 in Fig 54 11 15 Starting up the ventilation unit Start up the ventilation unit as described in the instructions provided with the unit Fig 54 Attaching the cover to the duct adapter 1 2 ...

Страница 45: ...ual M WRG II ventilation units 45 Meltem Wärmerückgewinnung GmbH Co KG Am Hartholz 4 D 82239 Alling info meltem com 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 Space for notes ...

Страница 46: ...ual M WRG II ventilation units 46 Meltem Wärmerückgewinnung GmbH Co KG Am Hartholz 4 D 82239 Alling info meltem com 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 Space for notes ...

Страница 47: ...ual M WRG II ventilation units 47 Meltem Wärmerückgewinnung GmbH Co KG Am Hartholz 4 D 82239 Alling info meltem com 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 Space for notes ...

Страница 48: ...ces 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 meltem com Email info m...

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