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Operating and installation instructions

M-WRG-II P-T (-F, -FC), M-WRG-II E-T (-F, -FC) ventilation units

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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

4

Dimensions

4.1

Ventilation unit without duct adapters

Fig. 5:

M-WRG-II ventilation unit without duct adapters, dimensions in millimetres

40

364

590

58

160

218

125

210

194,5

149

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Summary of Contents for M-WRG-II E-F

Page 1: ... 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 OPERATING AND INSTALLATION INSTRUCTIONS HOME VENTILATION WITH HEAT RECOVERY Ventilation units M WRG II P T F FC M WRG II E T F FC Part no 744008EN Week 43 2019 EN ...

Page 2: ...lters 11 1 8 Storage 11 1 9 Environmentally friendly disposal 11 1 10 Revision index 11 1 11 Explanation of the symbols used 11 1 12 Supplementary documents 11 2 Safety instructions 12 2 1 Hazard classification 12 2 2 Notes on using the ventilation units safely 12 2 2 1 Fire protection 12 2 2 2 Operation with fireplaces 12 2 2 3 Installation in wet areas 13 2 2 4 Condensate drain 13 2 2 5 Starting...

Page 3: ...ilation unit before switching on for the first time 28 8 2 Switching on the ventilation unit 28 9 Operating the ventilation unit 29 9 1 Selecting the ventilation level program 29 9 2 Setting the ventilation unit to Standby mode 29 9 2 1 Activating Standby mode with the InControl pushbutton sensor 29 9 2 2 Activating Standby mode with the three step rotary switch 29 9 3 Optional pushbutton for inte...

Page 4: ...Control pushbutton sensor to M WRG II P T M WRG II E T 46 15 5 2 Connecting the InControl pushbutton sensor to M WRG II P T F M WRG II E T F 47 15 5 3 Connecting the InControl pushbutton sensor to M WRG II P T FC M WRG II E T FC 48 15 6 Connection of 2 to 5 ventilation units 49 15 6 1 Connecting the InControl pushbutton sensor to M WRG II P T M WRG II E T 49 15 6 2 Connecting the InControl pushbut...

Page 5: ...ad section 2 Safety instructions on page 12 carefully 1 2 Description These instructions describe how to set up and operate the decentralised venti lation units M WRG II P T F FC and M WRG II E T F FC see Fig 1 They also explain how to connect the InControl pushbutton sensor and the three step rotary switch with zero posi tion electrically to the ventilation unit M WRG stands for Meltem heat recov...

Page 6: ...he membrane touch pad on the side of the unit are used to set different ventilation levels programs and a time limited intensive ventilation program It therefore allows you to adapt the air flow to your needs Beside each button is an LED that displays the active ventilation program and further information about the unit s status air filter change fault etc The ventilation units from the M WRG II P...

Page 7: ... of operating hours 5478 20 M WRG FT The 4 way wireless pushbutton switch with LED feedback allows the M WRG II units to be operated wirelessly 5478 11 M WRG ALGH The mobile reader is used to read the number of hours for which the M WRG II units have been in use Table 1 Optional accessories 1 3 Target group These operating and installation instructions are aimed at two target groups Chapters 1 Int...

Page 8: ...E R Y 1 5 National technical approval for Germany An application for a national technical approval is made to the Deutsches Institut für Bautechnik DIBt quoting reference III 57 1 51 3 57 17 For installation outside Germany the national regulations applicable in your country should be followed 1 6 Nameplate You will find the nameplate on the intermediate plate on the inside of the housing see item...

Page 9: ...ated into wall U installation version Energy efficiency class ErP B A 1 7 2 Dimensions and weight Unit dimensions excluding air connectors see also section 4 on page 16 364 x 590 x 218 mm W x H x D Visible unit depth when surface mounted 218 mm Visible unit depth when flush mounted 58 mm Visible unit depth when integrated into wall Outdoor air exhaust air connectors DN 100 Weight Approx 8 3 kg 1 7...

Page 10: ...ccessories 5 level on the unit 10 level with accessories infinitely variable with humidity CO2 sensors Interface for connecting external controls InControl pushbutton sensor three step rotary switch with zero position pushbutton for intensive ventilation Supply air exhaust air fan EC direct current radial fan Heat exchanger Cross counterflow plate heat exchanger on M WRG II E T F FC with enthalpy ...

Page 11: ...Date 2nd edition Operating and installation instructions for M WRG II P T F FC and M WRG II E T F FC ventilation units Week 43 2019 EN 1 11 Explanation of the symbols used This symbol indicates an action to be taken This symbol indicates a list 1 12 Supplementary documents Manual Part no Installation manual for flush mount installation kit with plastering trim solid construction M WRG II M MB 7440...

Page 12: ...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 safe...

Page 13: ...ion kits and ventilation units in section 1 12 on page 11 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 14 and chapter 6 Rules for correct usage on page 21 There is no exceptional loading due to very high atmospheric humidity 2...

Page 14: ...This has the advantage 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 i...

Page 15: ...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 outer wall terminals The warranty does not cover wearing parts such as air filters 3 2 Liability The manufacturer s liability shall not apply in the following cases The installation kit was not installed as describe...

Page 16: ...ng 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 4 Dimensions 4 1 Ventilation unit without duct adapters Fig 5 M WRG II ventilation unit without duct adapters dimensions in millimetres 40 364 590 58 160 218 125 210 194 5 149 ...

Page 17: ...winnung 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 4 2 Ventilation unit with duct adapters Fig 6 M WRG II ventilation unit with duct adapters dimensions in millimetres 40 218 364 610 590 58 160 208 5 125 210 194 5 149 ...

Page 18: ...ules 5 1 1 Ventilation unit with cover attached Item in Fig 7 Designation 1 Housing 2 Unit cover 3 Membrane touch pad with 5 buttons for selecting the ventilation levels programs and 5 status indicator LEDs 5 1 2 Ventilation unit with cover removed Item in Fig 8 Designation 1 Supply air grille 2 Outdoor air filter with filter cover 3 Mains switch On Off 4 Extract air filter with filter ring 5 Extr...

Page 19: ...ate heat exchanger 4 Outdoor air 4 Exhaust air fan 5 Exhaust air 5 Outdoor air filter 6 Outer wall terminal The ventilation unit operates continuously transports outdoor air and extract air at the same time and guides and filters the outdoor air and extract air separately The self reg ulating fans which ensure a constant volumetric flow rate are arranged on the supply air and exhaust air sides The...

Page 20: ...rflow plate heat exchanger works The channels on the cross counterflow plate heat exchanger item 1 in Fig 11 are designed so that the air flows move in opposite directions This guaran tees the greatest possible exchange of thermal energy In the winter the highly thermally conductive plates transfer the heat from the extract air flow item 2 in Fig 11 to the supply air flow item 3 in Fig 11 The cool...

Page 21: ...the ventilation unit either in continuous mode or demand controlled via the humidity or CO2 sensors only if the unit has the appro priate sensors Energy saving motors and an innovative controller ensure a very low power consumption even in continuous mode Continuous removal of moisture from the interior is only guaranteed while the unit is in operation Run the intensive ventilation program in the ...

Page 22: ...ton sensor Modbus RS 485 bus or the M WRG FBH wireless remote control NOTICE In the summer months ventilate cellars and similar rooms only during the night Otherwise condensation from the atmospheric humidity can cause damage due to damp on the cold walls 6 3 Air filters Never run the ventilation unit without air filters Always use genuine Meltem filters These are precisely matched to your M WRG I...

Page 23: ...membrane touch pad the InControl pushbutton sensor or three step rotary switch can thus be adapted to suit the customer s requirements You will find more details in the user guide Wireless remote control M WRG FBH see section 1 12 on page 11 7 1 Controls and indicators on the ventilation unit On the left of the ventilation unit there is a membrane touch pad with 5 buttons items 1 to 5 in Fig 12 Th...

Page 24: ...program Air flow 1 Reduced ventilation people absent 10 m3 h 2 Normal ventilation people present 30 m3 h 3 Increased ventilation 50 m3 h 4 70 m3 h 5 Intensive ventilation 15 min 100 m3 h 7 1 1 2 M WRG II P T F M WRG II E T F Key in Fig 12 Ventilation program Air flow 1 Reduced ventilation people absent 10 m3 h 2 Normal ventilation people present 30 m3 h 3 Increased ventilation 50 m3 h 4 Humidity c...

Page 25: ...for 10 seconds and then goes out again 7 1 2 2 Status indicators An LED that lights up continuously or flashes indicates one of the following ventilation unit states LED in Fig 12 Status LED 1 lights up continuously Air filter change required LED 2 lights up continuously Unit fault e g faulty sensor or motor LED 3 flashes for 10 s The absolute atmospheric humidity of the supply air is greater than...

Page 26: ...the currently selected ventilation program 7 2 1 InControl pushbutton sensor for type M WRG II P T and M WRG II E T ventilation units Reduced ventilation people absent Standby mode Increased ventilation Supply air operation Summer mode Normal ventilation people present Intensive ventilation 15 min Extract air operation Fig 14 InControl pushbutton sensor for M WRG II P T and M WRG II E T 7 2 2 InCo...

Page 27: ...nsor for M WRG II P T FC and M WRG II E T FC CO 7 2 4 Status indicators on the InControl pushbutton sensor A flashing LED indicates one of the following ventilation unit states Ventilation program LED Status Reduced ventilation people absent LED flashes see Fig 14 Fig 15 and Fig 16 Unit fault e g faulty sensor or motor Normal ventilation people present LED flashes see Fig 14 Fig 15 and Fig 16 Air ...

Page 28: ...50 m3 h M WRG II P T F M WRG II E T F Humidity control 10 60 m3 h infinitely variable M WRG II P T FC M WRG II E T FC Automatic mode humidity and CO2 control 10 60 m3 h infinitely variable 8 Starting up 8 1 Checking the ventilation unit before switching on for the first time Check the ventilation unit for damage Check that the air grilles for extract air and supply air item 1 and 5 in Fig 8 on pag...

Page 29: ...he basis of its own measured values using the three step rotary switch with zero position see section 7 3 on page 28 The ventilation unit always carries out the most recently made selection 9 2 Setting the ventilation unit to Standby mode You can set the ventilation unit to Standby mode This triggers the following actions The current ventilation mode is ended The ventilation unit continues to be s...

Page 30: ... on the exhaust air side When an exhaust air temperature 5 5 C 7 0 C with M WRG II E is maintained for a period of 3 minutes the unit gradually switches back to the previous operating state If a value of 5 5 C 7 0 C with M WRG II E is not reached on the exhaust air side despite increasing the proportion of extract air within the unit s control range e g because the room has cooled down both the su...

Page 31: ...dour nuisance 10 4 Intensive ventilation temporary 15 min The ventilation unit runs at maximum ventilation level 100 m3 h After roughly 15 minutes or when another button is pressed the intensive ventilation is ended and the previously set ventilation program is resumed 10 5 Supply air operation summer mode The ventilation unit only transports supply air the extract air is switched off This oper at...

Page 32: ... O VOC AUL option ventilation units with a CO2 sensor can also detect volatile organic compounds in the outdoor air using a VOC sensor see section 11 4 on page 34 NOTICE When it is started up for the first time the ventilation unit must remain switched on for at least 15 hours without interruption so that the VOC sensor can be calibrated Make sure that the air is not severely contaminated during t...

Page 33: ...not switch to the previously active ventilation program until the set time has elapsed Windowless rooms can be ventilated in accordance with DIN 18017 3 in combination with the M WRG II O NOF option part no 721004 11 1 2 Factory defaults and possible adjustment ranges Parameter Factory defaults Possible adjustment ranges Air flow 60 m3 h 10 to 100 m3 h Switch on delay 1 min 0 to 240 min Run on tim...

Page 34: ...e ventilation program the unit temporarily reduces the supply air if the threshold for contamination with volatile organic compounds from biological decay and decomposition processes motor traffic exhaust fumes or vola tile by products from industrial and commercial operations is exceeded 1 500 ppm This option is only available for units with a CO2 sensor M WRG II FC It needs to be fitted at the f...

Page 35: ... higher ventilation levels A humidity program which increases the air flow as required runs continuously in background mode This option includes the mains switch without function so that the user cannot easily switch the unit off it can be switched off via the building s fuse box for example This option changes the button assignment on the ventilation unit control panels Button 1 2 3 4 20 40 60 80...

Page 36: ...The following air filters may be used or are available for selection for the M WRG II venti lation units Part no Type Filter type Filter class Application 750010 M WRG II FA Outdoor air filter ISO ePM1 60 F7 Effectively filters out respirable particulates such as pollen soot and bacteria from dust class PM1 750020 M WRG II FK Activated charcoal filter optional for outdoor air ISO ePM2 5 55 F7 Effe...

Page 37: ...lift the unit cover up and away from the housing Switch the ventilation unit off at the mains switch see Fig 13 on page 23 On ventilation units with the M WRG II O NOF option power to the unit must be switched off using the building s miniature circuit breaker 12 3 2 Removing the extract air filter Turn the filter ring item 1 in Fig 19 using the hand grip item 2 in Fig 19 anti clockwise until the ...

Page 38: ...ing tabs item 2 in Fig 21 on the back wall of the ventilation unit Place the filter ring item 3 in Fig 21 on the extract air filter Make sure that the filter ring lies flat on the interme diate plate item 4 in Fig 21 Turn the filter ring clockwise until the arrow on the filter ring item 5 in Fig 21 lines up with the arrow for the locking position item 6 in Fig 21 Make sure that the 4 tabs item 7 i...

Page 39: ...em 8 in Fig 22 on the intermediate plate Check the position of the filter cover The hand grip must be vertical and the arrow on the filter cover must line up with the arrow for the locking position see Fig 20 on page 38 NOTICE The ventilation unit will not work as well if the filter cover is not inserted correctly Only M WRG II FA part no 750010 and M WRG II FK activated charcoal filter part no 75...

Page 40: ...ion unit will beep three times as confirmation Monitoring of the period since the last air filter change is now restarted 13 Cleaning WARNING Switch off the power to the ventilation unit before cleaning When cleaning make sure that no moisture penetrates into the inside of the housing Never use a high pressure cleaner steam cleaner or steam jet The ventilation unit is made of high quality plastic ...

Page 41: ...safe mode after an EMC fault Switch the ventilation unit off wait 15 seconds then switch on Installation error Have the wiring checked by a qualified electrician Faulty switch motor or controller Check by a qualified electrician LED 2 lights up continuously Unit fault Contact Meltem The ventilation unit frequently activates the frost protection function Filter change interval exceeded Change air f...

Page 42: ...ntilation unit may be damaged if the control cable is connected incorrectly This will also invalidate the warranty Also follow the installation manual for the M WRG II ventilation units see section 1 12 on page 11 The installation must be carried out in accordance with the generally acknowledged rules of technology 15 1 Switching off power to the ventilation unit DANGER Potentially fatal voltages ...

Page 43: ...m of the ventilation unit The unit cover will come away At the same time push your index fingers into the gap between the unit cover and housing and lift the unit cover up and away from the housing 15 3 Removing the electronics compartment cover plate Use the screwdriver to loosen the Torx screw item 1 in Fig 25 on the electronics compartment cover plate item 2 in Fig 25 Remove the electronics com...

Page 44: ...LATION 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 15 4 Overview of the modules 15 4 1 Connection board in the ventilation unit with terminal assignment Fig 26 Connection board in the ventilation unit with terminal assignment LED OUT IN IN LED OUT RJ45 NOTICE The DIP switches and jumpers on the board are preset at the factory Do not change the position of any DIP switches or jumper...

Page 45: ...3 in Fig 27 as an orientation guide It is only in this position that the connections on the terminal blocks agree with the connec tions identified in the connection diagram Fig 28 15 4 3 Connection diagram Item in Fig 28 Designation 1 Terminal block for pushbuttons 2 Terminal block for LEDs 3 Optional bridge for backlight NOTICE The InControl pushbutton sensor has a backlight that can be activated...

Page 46: ...trol pushbutton sensor Wire colour Function Pushbutton LED 1 GND GND 2 24 V DC 3 1 Reduced ventilation 4 2 Normal ventilation 5 3 Increased ventilation 6 4 Intensive ventilation 7 1 LED 1 reduced ventilation 8 2 LED 2 normal ventilation 9 3 LED 3 increased ventilation 10 4 LED 4 intensive ventilation 11 5 Supply air operation 12 6 Extract air operation 13 Unused 14 Unused 15 5 LED 5 supply air ope...

Page 47: ...ton sensor Wire colour Function Pushbutton LED 1 GND GND 2 24 V DC 3 1 Reduced ventilation 4 2 Normal ventilation 5 3 Increased ventilation 6 4 Intensive ventilation 7 1 LED 1 reduced ventilation 8 2 LED 2 normal ventilation 9 3 LED 3 increased ventilation 10 4 LED 4 intensive ventilation 11 6 Supply air operation 12 Unused 13 5 Humidity control 14 Unused 15 6 LED 6 supply air operation 16 Unused ...

Page 48: ...olour Function Pushbutton LED 1 GND GND 2 24 V DC 3 1 Reduced ventilation 4 2 Normal ventilation 5 3 Increased ventilation 6 4 Intensive ventilation 7 1 LED 1 reduced ventilation 8 2 LED 2 normal ventilation 9 3 LED 3 increased ventilation 10 4 LED 4 intensive ventilation 11 Unused 12 Unused 13 5 Humidity control 14 6 CO2 control or automatic mode 15 Unused 16 Unused 17 5 LED 5 humidity control 18...

Page 49: ...cable between the ventilation unit and InControl pushbutton sensor should be no more than 15 m long Ventilation unit 1 master must always be switched on It generates the feedback for the LED on the InControl pushbutton sensor Ventilation units 2 to 5 slaves only respond to switching commands from the InControl pushbutton sensor NOTICE Connect only to the first ventilation unit master Connect GND t...

Page 50: ...slave 4 slave 5 slave 2 1 3 3 3 3 3 2 4 4 4 4 4 3 5 5 5 5 5 4 6 6 6 6 6 5 13 13 13 13 13 6 11 11 11 11 11 GND 1 1 1 1 1 1 7 2 8 3 9 4 10 5 17 6 15 Table 9 Connecting the InControl pushbutton sensor to M WRG II P T F M WRG II E T F 15 6 3 Connecting the InControl pushbutton sensor to M WRG II P T FC M WRG II E T FC Terminal blocks InControl pushbutton sensor Number M WRG II P T FC M WRG II E T FC v...

Page 51: ...tholz 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 15 7 Final tasks Insert the electronics compartment cover plate once more and fix it in position with the Torx screw see Fig 25 on page 43 Close the ventilation unit with the unit cover see section 12 3 6 on page 39 ...

Page 52: ... 12 NOTICE The ventilation unit may be damaged if the control cable is connected incorrectly This will also invalidate the warranty Also follow the installation manual for the M WRG II ventilation units see section 1 12 on page 11 The installation must be carried out in accordance with the generally acknowledged rules of technology 16 1 Switching off power to the ventilation unit DANGER Potentiall...

Page 53: ...m of the ventilation unit The unit cover will come away At the same time push your index fingers into the gap between the unit cover and housing and lift the unit cover up and away from the housing 16 3 Removing the electronics compartment cover plate Use the screwdriver to loosen the Torx screw item 1 in Fig 25 on the electronics compartment cover plate item 2 in Fig 25 Remove the electronics com...

Page 54: ... the three step rotary switch DIP switch 2 must be set to the Schalter switch posi tion 16 4 2 Three step rotary switch with zero position To operate the ventilation units you will need a three step rotary switch with zero position provided by the customer A suitable example is available from BUSCH JAEGER or GIRA The three step rotary switch is used to select one of three different ventilation lev...

Page 55: ... 1 Terminal assignment example of a BUSCH JAEGER three step rotary switch with zero position Terminal on board Terminal on three step rotary switch with zero position BUSCH JAEGER Optional push button for intensive ventilation Optional LED for intensive venti lation feedback 24 VDC Function Wire colour 01 X cathode 0 V 02 2 X 24 V DC 03 1 Reduced ventilation 04 5 Normal ventilation 05 3 Increased ...

Page 56: ...d LED for intensive ventilation Optional LED for inten sive ventilation Ventilation level I Ventilation level II Ventilation level III Intensive ventilation NOTICE Connect terminal 02 24 VDC to one ventilation unit only NOTICE Feedback signals can not be switched togeth er to create a single group signal NOTICE One to five ventilation units may be connected to the three step rotary switch and to t...

Page 57: ...tholz 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 16 7 Final tasks Insert the electronics compartment cover plate once more and fix it in position with the Torx screw see Fig 25 on page 43 Close the ventilation unit with the unit cover see section 12 3 6 on page 39 ...

Page 58: ...M WRG II P T F FC M WRG II E T F FC ventilation units 58 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 ...

Page 59: ...M WRG II P T F FC M WRG II E T F FC ventilation units 59 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 ...

Page 60: ...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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