Meltem M-WRG-S/Z-S 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
OPERATING INSTRUCTIONS
HOME VENTILATION WITH HEAT RECOVERY
Ventilation units
M-WRG-S/Z-S
M-WRG-S/Z-24
M-WRG-S/Z-EIB
M-WRG-S/Z-KNX (-F, -FC)
Part no. 5302-27-01 Week 41/2017 EN

Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 2 -
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 ..................................................................................................................... 5
1.1 Notes on the operating instructions .................................................................................. 5
1.2 Description ........................................................................................................................ 5
1.3 Target group ..................................................................................................................... 6
1.4 EU declaration of conformity ............................................................................................ 6
1.5 National technical approval (for Germany) ....................................................................... 6
1.6 Nameplate ........................................................................................................................ 6
1.7 Technical data ................................................................................................................... 7
1.7.1 Electrical connection ......................................................................................................... 7
1.7.2 Dimensions and weight .................................................................................................... 7
1.7.3 Noise emission ................................................................................................................. 7
1.7.4 Unit properties .................................................................................................................. 7
1.7.5 Unit features ..................................................................................................................... 8
1.7.6 Airlters ............................................................................................................................ 8
1.8 Storage ............................................................................................................................. 8
1.9 Environmentally-friendly disposal ..................................................................................... 8
1.10 Revision index .................................................................................................................. 8
1.11 Explanation of the symbols used ...................................................................................... 8
2 Safety instructions ......................................................................................................... 9
2.1 Hazardclassication ......................................................................................................... 9
2.2 Notes on using the ventilation units safely ....................................................................... 9
2.3 Notes on using the ventilation units ................................................................................ 10
2.4 Intended use ................................................................................................................... 10
3 Warranty and liability .................................................................................................... 11
3.1 Warranty .......................................................................................................................... 11
3.2 Liability ............................................................................................................................. 11
4 Dimensions .................................................................................................................... 11
5 Structure and function ................................................................................................. 12
5.1 Overview of the modules ................................................................................................ 12
5.1.1 Ventilation unit – cover attached ..................................................................................... 12
5.1.2 Ventilation unit – cover removed .................................................................................... 12
5.1.3 Outer wall terminal .......................................................................................................... 12
5.2 Description of the functions ............................................................................................ 13
5.2.1 How the M-WRG ventilation unit works .......................................................................... 13
5.2.2 Howthecross-owplateheatexchangerworks ............................................................ 14
6 Rules for correct usage ............................................................................................... 14
6.1 General ........................................................................................................................... 14
6.2 Operation in high atmospheric humidity ......................................................................... 14
6.3 Operation at cold times of year ....................................................................................... 15
6.4 Airlters .......................................................................................................................... 15
7 Controls on the ventilation unit .................................................................................. 16
8 Starting up ..................................................................................................................... 16
8.1 Checkventilationunitbeforeswitchingonforrsttime .................................................. 16

Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 3 -
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
8.2 Switch on the ventilation unit .......................................................................................... 16
8.3 Checkpositionofairaps .............................................................................................. 17
9 Operating the M-WRG-S/Z-S ventilation unit ............................................................. 18
9.1 Three-step rotary switch with zero position .................................................................... 18
9.2 Optional pushbutton for intensive ventilation .................................................................. 18
10 Operating the M-WRG-S/Z-24 ventilation unit ............................................................ 19
10.1 Operation with control via building control system ......................................................... 19
11 Operating the M-WRG-S/Z-EIB ventilation unit .......................................................... 20
11.1 Operation with control via EIB bus ................................................................................. 20
12 Operating the M-WRG-S/Z-KNX, M-WRG-S/Z-KNX-F, M-WRG-S/Z-KNX-FC
ventilation units ............................................................................................................ 21
12.1 Operation with control via KNX bus ................................................................................ 21
12.1.1 “Reduced ventilation (people absent)” program ............................................................. 21
12.1.2 “Normal ventilation (people present)” program ............................................................... 21
12.1.3 “Increased ventilation” program ...................................................................................... 21
12.1.4 “Intensive ventilation (15 min)” program ......................................................................... 22
12.1.5 “Supply air operation (Summer mode)” program ............................................................ 22
12.1.6 “Extract air operation” program ....................................................................................... 22
12.1.7 “Humidity control” program ............................................................................................. 22
12.1.8 “Mixed gas/CO2control” program ................................................................................... 23
12.2 Set ventilation unit to Standby mode .............................................................................. 23
13 General notes on operation ......................................................................................... 23
13.1 Set ventilation level on unit’s stepping switch ................................................................. 23
13.2 Standby mode ................................................................................................................ 24
13.3 Frost protection function ................................................................................................. 24
14 Filter maintenance ........................................................................................................ 25
14.1 Choiceoflter ................................................................................................................. 25
14.2 Orderinglters ................................................................................................................ 25
14.3 Changingtheairlters .................................................................................................... 25
14.3.1 Remove cover from ventilation unit ................................................................................ 26
14.3.2 Removeairlters ............................................................................................................ 26
14.3.3 Insertnewairlters ........................................................................................................ 27
14.3.4 Attach cover to ventilation unit ........................................................................................ 27
14.3.5 Resetlterchangeindicator ........................................................................................... 28
15 Cleaning ........................................................................................................................ 28
16 Troubleshooting ........................................................................................................... 29

Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 4 -
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY

Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 5 -
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 the operating instructions
These original operating instructions contain important information that should be followed
when setting up and using the M-WRG-S/Z-S, M-WRG-S/Z-24, M-WRG-S/Z-EIB and
M-WRG-S/Z-KNX (-F, -FC) ventilation units.
►Read all the instructions carefully before starting up the ventilation unit to avoid possible
risks and mistakes.
►When assembly 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 section „2 Safety instructions“ on page 9 carefully.
1.2 Description
These instructions describe how to set up and
operate the decentralised ventilation units
M-WRG-S/Z-S, M-WRG-S/Z-24, M-WRG-S/Z-EIB
and M-WRG-S/Z-KNX (-F, -FC) (see Fig. 1).
M-WRG stands for Meltem heat recovery. Home
ventilation experience extending back over
35 years has been incorporated into this product
from Meltem Wärmerückgewinnung.
Using windows for ventilation, particularly during
periods of cold weather, is now a thing of the
past. This ventilation unit brings in outdoor air fully
automatically, and heats it by recovering heat from
the air that is extracted. Outdoor air and extract
air are routed in separate ducts through a cross-
owplateheatexchanger(seesection5.2.2on
page 14).
You save on heating costs, increase your living
comfort and are kind to the environment by
reducing CO2emissions.Anairlteralsoremoves
pollen, dust and other impurities from the outdoor air.
The ventilation units are designed for continuous operation and can be both surface-mounted and
ush-mounted.Theyarelow-maintenance,butregular air lter changes are important.
A stepping switch on the ventilation units is used to set three different power levels and a
time-limited intensive ventilation level. The ventilation units also have different communication
Fig. 1: M-WRG-S/Z-S, M-WRG-S/Z-24, M-WRG-S/Z-
EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units

Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 6 -
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
interfaces that can be used to control the ventilation, either via an external three-step rotary
switch (M-WRG-S/Z-S) or via the building control system (M-WRG-S/Z-24, M-WRG-S/Z-EIB,
M-WRG-S/Z-KNX (-F, -FC)).
1.3 Target group
These operating instructions are intended for users of the ventilation unit. No special prior knowl-
edge is needed.
1.4 EU declaration of conformity
The ventilation units described below
Type: Part number:
M-WRG-S/Z-S 5016-1-0
M-WRG-S/Z-24 5016-2-1
M-WRG-S/Z-EIB 5016-2-2
M-WRG-S/Z-KNX 5016-1-2
M-WRG-S/Z-KNX-F 5016-1-2-1
M-WRG-S/Z-KNX-FC 5016-1-2-2
manufactured by
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4
82239 Alling
conform to the regulations and standards listed in the EU Declaration of Conformity provided.
1.5 National technical approval (for Germany)
A valid national technical approval from the
Deutsches Institut für Bautechnik (DIBt) must be
obtained for the 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/down-
loads/ (see also the QR code on the back page of
these instructions).
The approval number is Z-51.3-138 (see item 1 in
Fig. 2).
►For installation outside Germany, the
national regulations applicable in your
country should be followed.
1.6 Nameplate
Youwillndthenameplateontheintermediateplateontheinsideofthehousing(seeitem2in
Fig. 2 on page 6).
Fig. 2: Approval number and nameplate

Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 7 -
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
1.7 Technical data
1.7.1 Electrical connection
Operating voltage 230 V AC
Mains frequency 50 Hz
Power consumption 3.8 - 37 W
Power consumption in relation
totheairvolumeow
0.17 W/m3/h (at 30 m3/h)
Maximum current consumption 0.16 A
Connecting cable NYM-J 3 x 1.5 mm2
IP rating IPX1
IPX4 with protective cap on mains switch
(optional, must be installed at the factory)
1.7.2 Dimensions and weight
Unit dimensions excluding air connectors
(see also Fig. 3 on page 11)
409 mm x 388 mm x 196 mm (H x W x D)
Visible unit depth when surface-mounted 196 mm
Visibleunitdepthwhenush-mounted 66 mm
Visible unit depth when integrated into wall (U2) –
Outdoor air/exhaust air connectors DN 100
Weight Approx. 8.1 kg
1.7.3 Noise emission
Sound pressure level LP, Aush-mount 15.5 - 46.5 dB(A)/Aeq 10 m2
Sound pressure level LP, A surface-mount 19 - 46 dB(A)/Aeq 10 m2
Sound insulation Dn,e,wush-mount/surface-mount 50/50 dB
1.7.4 Unit properties
Airow 15 - 100 m3/h
Heatrecoveryefciency Up to 76 %
Leakage 0.1 %

Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 8 -
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
1.7.5 Unit features
Output control 3 levels + intensive ventilation level
Supply air/extract air fan EC direct current motor, radial fan
Heat exchanger Cross-owplateheatexchanger
Filter change indicator (according to the level of
soilingofthelteroratleastoneyearsincethelast
lterchange)
Audible
Condensate drainage Via exhaust air pipe, no condensate trap
required
Fullyautomaticcoverapcontrolwhenswitching
On / Off, in Standby mode and if the power fails
Yes
Frost protection function Yes
1.7.6 Air lters
Designation Filter class Filter area
Standardlter G4 0.36 m2
Allergylter(optional) F7 0.32 m2
Activatedcharcoallter(optional) M6 0.12 m2
1.8 Storage
►Store the ventilation unit in its original packaging in a dry place where the temperature
ranges between 0 °C and +40 °C.
1.9 Environmentally-friendly disposal
The ventilation unit components must not be disposed of in the residual waste bin.
►In Germany, metal and plastic components should be disposed of at the local recy-
cling centre. The national regulations in other EU states should also be followed.
►In Germany, electrical components should be disposed of in accordance with
the Electrical and Electronic Equipment Act (ElektroG). In other EU states, the
national implementation of the Waste Electrical and Electronic Equipment Directive
2012/19/EU (WEEE) should be followed.
►In Germany, rechargeable batteries and accumulators should be disposed of in
accordance with the Batteries Act (BattG). The national implementation of the Battery
Directive 2006/66/EC should be followed in other EU states.
►The regulations and statutory requirements in your own country concerning disposal
should also be followed.
1.10 Revision index
Edition Manual Date
1st edition Operating instructions for M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
Week 41/2017 EN
1.11 Explanation of the symbols used
►This symbol indicates an action to be taken.
— This symbol indicates a list.

Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 9 -
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
These instructions contain 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.
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re-
places.
►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.
►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.

Operating instructions
M-WRG-S/Z-S, M-WRG-S/Z-24,
M-WRG-S/Z-EIB, M-WRG-S/Z-KNX (-F, -FC) ventilation units
- 10 -
Meltem Wärmerückgewinnung GmbH & Co. KG
Am Hartholz 4 · D-82239 Alling
[email protected] · www.meltem.com
VENTILATION THE RIGHT WAY
VENTILATION & HEAT RECOVERY
—Build-up of icicles and ice patches at low temperatures
The heat recovery process in our ventilation units causes condensation. This condensa-
tion 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.
CAUTION
—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.
2.3 Notes on using the ventilation units
— This unit may be used by children from 8 years old and by persons of restricted physical,
sensory or mental abilities or persons lacking experience and knowledge if they are super-
vised 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.
— 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.
►Make sure that the supply and extract air openings are not blocked, obstructed or
covered when the room is subsequently decorated and furnished.
2.4 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
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 instructions.
— Theventilationunitmustnotbeoperatedwithoutairlters.
— 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
components will work perfectly and correctly.