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Viessmann HR A300, Service Instructions Manual

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Viessmann HR A300 Service Instructions Manual Download Page 34

34

Danger

Contact with 'live' components can lead to seri-
ous injury from electric current.
Before removing the cover 

pull out the mains

plug and safeguard against reconnection

.

1.

2.

3.

Fig. 32

Assemble in reverse order.

Checking the DIP switches and pressure hoses

The pressure hoses must be firmly seated on the con-
troller PCB connections. The pressure hoses must not
be kinked.

Maintenance

Removing the PCB cover

5793 605 GB

Maintenance

Summary of Contents for HR A300

Page 1: ...contractors VIESMANN Vitovent 300 W Mechanical ventilation system with heat recovery For a maximum air flow rate of 300 m3 h and 400 m3 h For applicability see the last page VITOVENT 300 W 5793 605 GB...

Page 2: ...olate the system from the power supply e g by removing the separate fuse or by means of a mains isolator and check that it is no longer live Note In addition to the control circuit there may be severa...

Page 3: ...verview of terminals 36 3 way diverter damper connection for geothermal heat exchanger on site 36 Temperature sensor resistance curve 37 5 Parts lists Vitovent 300 W overview 39 Vitovent 300 W parts 4...

Page 4: ...nance Intended use The appliance is only intended to be installed and operated in ventilation systems that comply with EN 1946 6 with due attention paid to the associated installation service and oper...

Page 5: ...ding This is achieved by closing the bypass damper This enables the inside of the building to be cooled by the outdoor air e g on cooler summer nights The constant flow rate control ensures a defined...

Page 6: ...air side 25 9 Shutting down the ventilation unit 26 10 Opening the appliance 26 11 Cleaning and replacing filters 27 12 Cleaning the countercurrent heat exchanger 28 13 Cleaning the interior 29 14 Cl...

Page 7: ...r duct Please note The simultaneous operation of extractor hoods or extracting tumble dryers and the Vitovent in rooms with an interconnected air supply results in negative pressure inside the room Ne...

Page 8: ...00 m3 h 100 m3 h Air Airflow 2 Standard ventilation standard air flow rate 150 m3 h 200 m3 h Air Airflow 3 Intensive ventilation maximum air flow rate 225 m3 h 300 m3 h Setting ranges Display Ventilat...

Page 9: ...f both fans is automatically adapted to maintain the selected air flow rate irrespective of the level of filter contamination In order to balance out pressure differences between the supply air and ex...

Page 10: ...60 80 10 Pressure drop in Pa Air flow rate in m h 2 A 15 30 70 4 6 12 9 Fig 2 A Width of annular gap in mm DN 100 air discharge angle 360 without deflector 10 50 40 30 20 20 40 50 60 80 10 Pressure d...

Page 11: ...A 12 15 70 90 30 6 2 Fig 4 A Width of annular gap in mm DN 125 air discharge angle 360 without deflector 10 60 50 40 30 20 20 40 50 60 80 100 10 Pressure drop in Pa Air flow rate in m h 4 9 A 12 15 70...

Page 12: ...Supply air valve for ceiling installation DN 125 360 air discharge angle Pressure drop 20 Pa Air flow rate 52 m3 h Annular gap to be set 6 mm 2 Set determined annular gap A at the supply air valve fo...

Page 13: ...nt the cal culated pressure drop and air flow rate for the indi vidual section Example Pressure drop 15 Pa Air flow rate 35 m3 h Aperture width to be set 6 mm 2 Remove the grille from the floor vent 3...

Page 14: ...drop and air flow rate for the individual section Example Pressure drop 15 Pa Air flow rate 27 m3 h Aperture width to be set 30 mm 2 Remove the slotted vent from the connecting cham ber 3 Set the det...

Page 15: ...selector C Slider at the back of the slotted vent Installation position Setting the rotary selectors Wall installa tion All rotary selectors set to C D Ceiling in stallation All rotary selectors set...

Page 16: ...Nominal diam eter Dimension a in mm Max flow rate in m3 h DN 100 134 45 DN 125 160 60 DN 100 10 50 40 30 20 20 40 50 60 80 10 Pressure drop in Pa Air flow rate in m h 5 5 10 12 A 0 30 70 10 Fig 12 A...

Page 17: ...ow rate for the individual section Example Engineering plans provide the following details for the individual section Extract air valve for wall or ceiling installation DN 100 Pressure drop 20 Pa Air...

Page 18: ...m3 h DN 100 100 60 DN 125 125 75 DN 100 80 70 60 50 40 30 20 20 40 50 60 80 100 10 Pressure drop in Pa Air flow rate in m h 10 E A C D B 30 70 90 Fig 15 A E Pressure drop curves for valve positions A...

Page 19: ...ls for the individual section Kitchen extract air valve DN 100 Pressure drop 20 Pa Air flow rate 40 m3 h Valve position C 2 Make the determined valve setting at kitchen extract air valve A E 3 Record...

Page 20: ...n boxes either at the front or at an angle of 90 1 2 5 5 1 0 210 4 4 7 0 6 3 0 A Fig 18 A DN 125 6 3 0 5 1 0 210 4 4 1 6 0 7 0 B Fig 19 B DN 160 6 3 0 6 0 2 300 4 4 7 0 1 8 0 C Fig 20 C DN 180 Commiss...

Page 21: ...125 B DN 160 C DN 180 Fully opening the metal supply air valve DN 125 Set the width of the annular gap to 15 mm see chap ter Metal supply air valve for ceiling installation Fully opening the metal ex...

Page 22: ...ng the air discharge angle at the plastic sup ply air valve The air discharge angle can be reduced from 360 to 180 e g for ceiling installation near walls by fitting a deflector supply air valve stand...

Page 23: ...pening the plastic extract air valve 1 3 25 2 Fig 24 On step 2 Open the extract air valve to the end of the scale Commissioning inspection maintenance Plastic ductwork flat presetting air flow cont 57...

Page 24: ...s carry out several tests across the area and calculate an average value 3 Based on the actual air speed look up the air flow rates in the diagrams or table from page 25 Record the determined values i...

Page 25: ...56 11 34 15 12 0 6 8 82 13 23 17 64 0 7 10 08 15 12 20 16 0 8 11 34 17 01 22 88 0 9 12 80 18 90 25 20 1 0 13 86 20 79 27 72 1 1 15 12 22 88 30 24 1 2 16 38 24 57 32 76 1 3 17 64 26 46 36 28 1 4 18 90...

Page 26: ...the air flow rates again if required Example Actual air flow rates Supply air side 176 m3 h Extract air side 154 m3 h Differential 22 m3 h 12 5 Required setting Set Unbalan Flow to 22 Vitovent 300 W...

Page 27: ...th a vac uum cleaner If the filters have already been cleaned several times replace both filters Replace both filters at least annually Dispose of contaminated filters through household waste 3 A B 2...

Page 28: ...stress can result in damage to the fins of the countercurrent heat exchanger Never grip the heat exchanger by its fins Only extract by means of the handle When inserting the heat exchanger push evenl...

Page 29: ...hand shower never clean mechanically Leave to drip dry prior to refitting it into the ventilation unit Cleaning the interior B A Fig 30 1 Pull out the outdoor air filter extract air filter and the co...

Page 30: ...ndensate drain C Condensate pipe 1 Check that the condensate can drain freely If nec essary clean the condensate pan see page 29 and the trap 2 Check the condensate pipe at the condensate drain connec...

Page 31: ...ting N O contact is being connected to input X15 1 X15 2 or X15 3 X15 4 see controller PCB on page 42 the following parameters must be set Parameter Delivered condition Setting value Input X15 1 X15 2...

Page 32: ...on the extract air fan and replace extract air fan if required E105 Supply air fan faulty Both fans stop The preheater coil is switched off Check the electrical connections on the supply air fan and...

Page 33: ...below 10 C the supply air flow is often reduced The ventilation unit frequently switches off at outside temperatures below 10 C Check the connections of the integral electric pre heater coil see page...

Page 34: ...pull out the mains plug and safeguard against reconnection 1 2 3 Fig 32 Assemble in reverse order Checking the DIP switches and pressure hoses The pressure hoses must be firmly seated on the con troll...

Page 35: ...oses blue DIP switch settings Vitovent 300 W With max flow rate 300 m3 h 400 m3 h ON 1 2 3 4 5 ON 1 2 3 4 5 Appliance type Vitovent 300 W 300 m3 h 400 m3 h Switch ON OFF ON OFF 5 X X 4 X X 3 X X 2 X X...

Page 36: ...ctions Floating N O contact e g for switching off the ventilation unit set V2 on off to 0 see oper ating instructions E Output 0 to 24 V max 4 5 VA X15 5 X15 6 F External temperature sensor NTC 10 k X...

Page 37: ...37 Temperature sensors NTC 10 k 100 10 20 10 0 10 20 30 Temperature in C 6 8 20 40 60 80 200 Resistance in k Fig 35 Maintenance Temperature sensor resistance curve 5793 605 GB Maintenance...

Page 38: ...38 Maintenance Temperature sensor resistance curve cont 5793 605 GB Maintenance...

Page 39: ...tails are required when ordering parts Serial no see type plate A Position number of the part from this parts list A Fig 36 A Type plate behind left front panel Parts lists Vitovent 300 W overview 579...

Page 40: ...40 0020 0019 0017 0014 0001 0011 0018 0002 0016 0003 0004 0005 0007 0010 0012 0015 0006 0013 0009 0008 Fig 37 Parts lists Vitovent 300 W parts 5793 605 GB Components...

Page 41: ...ng 2 high limit safety cut outs 0008 Front left door 0009 Front right door 0010 Remote control 0011 Condensate pan 0012 Wall mounting bracket 0013 Air duct left 0014 Air duct right 0015 Air duct cover...

Page 42: ...ut 0 to 24 V max 4 5 VA N Input changeover Input 0 to 10 V for humidity sensor delivered condition For V2 Vmin select 7 V See oper ating instructions Floating N O contact e g for switching off the ven...

Page 43: ...h Air Airflow 2 200 m3 h 0 to 400 m3 h Air Airflow 3 300 m3 h 0 to 400 m3 h Bypass damper Bypass temp 22 C 12 to 35 C Bypass Hyster 2 K 0 to 5 K Bypass mode AUTO AUTO open closed Pressure imbalance U...

Page 44: ...4 6 and 7 CN2 coupling 0 0 Note Never set 1 2 3 and 4 CN2 supply mode 5 0 and 5 Note Never set 1 2 3 4 6 and 7 CN2 extract mode 5 0 to 7 Note Never set 1 2 3 4 6 and 7 Geothermal heat exchanger 3 way...

Page 45: ...r Living room Living room Dining room Bedroom Study Child s room 1 Child s room 2 Intended flow rate m h Supply air Extract air valve Preset aperture width First test average Air velocity m s Air flow...

Page 46: ...e width Second test average Air velocity m s Air flow rate m h Total supply air Extract air Kitchen Bathroom Guest WC Utility room Total extract air Sample person 160 163 152 46 25 25 25 30 30 25 160...

Page 47: ...and thermal insulation EPS plastic Dimensions excluding connectors Total length depth mm 540 540 Total width mm 677 677 Total height mm 843 843 Total weight kg 39 39 Number of radial DC fans With cons...

Page 48: ...ply and allow components to cool down where appropriate All components must be disposed of correctly DE We recommend using the disposal system organ ised by Viessmann Operating fluids e g heat transfe...

Page 49: ...ndards EN 55 014 1 EN 60 335 2 40 EN 55 014 2 EN 60 335 2 80 EN 60 335 1 EN 61 000 3 2 EN 62 233 EN 61 000 3 3 In accordance with the following Directives this prod uct is designated with 2004 108 EC...

Page 50: ...2 13 14 19 24 45 46 Condensate drain 7 Condensate drain checking 30 Condensate drain connector 30 Condensate pan 41 Condensate pipe 30 Connection diagram 42 Connector 41 Controller PCB 32 34 41 42 Cou...

Page 51: ...ensor 32 R Radial DC fan 47 Radial fan 47 Rated voltage 47 Rate of temperature change 47 Remote control 5 41 42 Reports Appliance settings 43 Commissioning report 45 46 Resistance curve temperature se...

Page 52: ...onwood 30 Telford Shropshire TF1 7YP GB Telephone 44 1952 675000 Fax 44 1952 675040 E mail info uk viessmann com Viessmann Werke GmbH Co KG D 35107 Allendorf Telephone 49 6452 70 0 Fax 49 6452 70 2780...

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