Viessmann NC-Box Installation And Service Instructions For Contractors Download Page 1

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Installation and service instructions

for contractors

VIESMANN

NC-Box

Pre-assembled unit for implementing the natural cooling function in conjunction
with brine/water heat pumps up to 17 kW

For applicability, see the last page

NC-Box

5675 869 GB

2/2015

Please keep safe.

Summary of Contents for NC-Box

Page 1: ...ions for contractors VIESMANN NC Box Pre assembled unit for implementing the natural cooling function in conjunction with brine water heat pumps up to 17 kW For applicability see the last page NC Box 5675 869 GB 2 2015 Please keep safe ...

Page 2: ...Isolate 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 several load circuits Danger Contact with live components can result in severe injuries Some components on PCBs remain live even after the power supply has been switched off Wait at least 4 minutes before...

Page 3: ...draulic connection 8 Preparation for retrofitting 8 Required connections 9 Connection with hydraulic connection set 10 Installing the contact humidistat 24 V 10 Electrical connection 12 Required connections 12 Power supply 14 Closing the NC Box 15 4 Commissioning and adjustment 16 5 Parts lists Overview of assemblies 18 Parts not shown 19 Hydraulics 20 Electrical equipment 22 Connection set 24 6 C...

Page 4: ...pump The temperature level of the primary circuit is directly transferred to the cooling circuit for central cooling Hydraulic connections The heating cooling circuit or the separate cooling cir cuit and the primary circuit brine are hydraulically connected directly to the NC Box The hydraulic con nection between the heat pump and the NC Box can be made on site or via the hydraulic connection set ...

Page 5: ... 200 G Vitocal 300 G and Vitocal 350 G with sufficient installation space above the heat pump See page 7 223 Fig 1 A NC Box B Return heating cooling circuit or separate cooling circuit C Flow heating cooling circuit or separate cooling circuit D Primary circuit flow NC Box brine entry E Secondary circuit return to heat pump F Secondary circuit flow to the NC Box G Heat pump H Primary circuit flow ...

Page 6: ...s Please note Unfavourable ambient conditions can lead to malfunctions and appliance damage The installation room must be dry and free from the risk of frost Ensure ambient temperatures between 0 and 35 C Danger Dust gases and vapours can be damaging to health and trigger explosions Avoid dust gases and vapours in the installation room Preparing for installation Siting and transport requirements 5...

Page 7: ... near the heat pump on a wall capable of bearing the load Installation with hydraulic connection set Fit the NC Box above the heat pump with the clear ances shown in Fig 2 160 760 2 2 3 2 2 1 Fig 2 Installation sequence Fitting the NC Box 5675 869 GB Installation ...

Page 8: ...Panel with cable entries and strain relief fittings Hydraulic connection To prevent corrosion damage provide all hydraulic pipes with thermal insulation as vapour diffusion proof installation on the brine and cold water sides in accordance with current engineering standards Preparation for retrofitting 1 Close ball valves and sliders 2 Open the primary circuit brine and the secondary circuit heati...

Page 9: ...cuit flow and return Separate cooling circuit e g fan convector Required hydraulic connection between the NC Box and heat pump Primary circuit flow For this note the following Seal the secondary circuit connector on the NC Box Connect the secondary circuit flow and return directly on the heat pump Equip a separate cooling circuit with a dedicated expansion vessel and a safety valve 2 5 bar 0 25 MP...

Page 10: ...s it may become necessary to provide several contact humidistats Where several contact humidistats are used connect all contact humidistats electrically in series In the delivered condition the contact humidistat switches at a relative humidity of 80 This value can be adjusted Contact humidistat installation instructions Note In the delivered condition the contact humidistat is located outside the...

Page 11: ...bove the NC Box to the flow of the heating cooling circuit or the separate cooling circuit If necessary remove parts of the thermal installation in order to provide direct contact with the pipe 2 Thermally insulate all lines on site with vapour diffu sion proof material Thermally insulate the pipe joints and the area around the contact humidistat with vapour diffusion proof adhesive tape Installat...

Page 12: ...le tightly to the corresponding termi nals If 2 components are connected to the same terminal press both cores together in a single wire ferrule Danger Incorrect wire assignment can result in serious injury and damage to the appliance Never interchange cores L and N Colour coding to IEC 60757 L BN Brown N BU Blue GNYE Green yellow Required connections Heat pump connecting cable NC signal Switching...

Page 13: ...wer supply 1 N PE 230 V 50 Hz across X2 1 and X2 2 via on site power distribution board Switching the NC Box NC signal across X2 3 and X2 4 by the heat pump control unit X5 Earth conductor terminal strip D Cross connect PCB or luster terminals X1 Earth conductor terminal strip X2 Neutral conductor terminal strip E Main PCB function components 230 V F Controller and sensor PCB G Vitotronic 200 heat...

Page 14: ...the power is switched off For this take the power consumption of the connected consumer into account fuse protec tion heat pump control unit max 16 A Heat pump installation and service instructions Danger Incorrect electrical installations can lead to seri ous injury from electrical current and result in appliance damage Connect the power supply and implement all safety measures e g RCD circuit in...

Page 15: ...itching the NC Box NC signal across X2 3 and X2 4 by the heat pump control unit X5 Terminal strip for earth conductor B Power distribution board on site C Heat pump control unit D Mains isolator optional E Fuse F1 max 16 A F Power supply 1 N PE 230 V 50 Hz Closing the NC Box Fit in reverse order to Fig 3 on page 8 Installation sequence Power supply cont 5675 869 GB Installation ...

Page 16: ...brine 1 Fill and vent the primary and secondary circuits of the system and check for leaks 2 Set the parameters for cooling operation at the heat pump control unit Vitotronic 200 service instructions Commissioning and adjustment Commissioning and adjustment 5675 869 GB Commissioning ...

Page 17: ...17 Commissioning and adjustment Commissioning and adjustment cont 5675 869 GB Commissioning ...

Page 18: ...late A Assembly from this parts list Position number of the individual part within the assembly from this parts list A B C D Fig 9 A Type plate B Hydraulic assembly C Electrical equipment assembly D Connection set assembly Parts lists Overview of assemblies 5675 869 GB Components ...

Page 19: ...rial no see type plate A in Fig 9 Position number of the part from this parts list Pos Part 0004 Touch up paint stick Vitosilver 0005 NC Box installation and service instructions 0006 Touch up spray paint Vitosilver Parts lists Overview of assemblies cont 5675 869 GB Components ...

Page 20: ...016 0016 0016 0016 0016 0016 0016 0029 0029 0012 0028 0013 0002 0007 0029 0010 0004 0027 0008 0005 0025 0012 0029 0001 0020 0022 0021 0023 0006 0018 0017 0019 0019 0003 0002 0024 0011 0015 0014 0026 Fig 10 Parts lists Hydraulics 5675 869 GB Components ...

Page 21: ...0013 Connection pipe mixer circulation pump 0014 Wall mounting bracket 0015 Mounting rail 0016 Gaskets A 21 x 30 x 2 mm set 0017 Threaded pipe clip 7 22 mm M6 set 0018 Spacer sleeves 12 mm long set 0019 Spacer sleeves 15 mm long set 0020 Strain relief fittings M16 set 0021 Plastic nut M16 set 0022 Cable entry panel 0023 Frost stat 0024 Terminal box with PCB and connecting cables 0025 Contact tempe...

Page 22: ...22 0002 0003 0005 0007 0006 0001 0008 0009 0010 Fig 11 Parts lists Electrical equipment 5675 869 GB Components ...

Page 23: ...st stat connecting cable 0006 Contact humidistat connecting cable 0007 Power cable 0008 High efficiency circulation pump connecting cable 960 mm long 0009 High efficiency circulation pump connecting cable 700 mm long 0010 Terminal box Parts lists Electrical equipment cont 5675 869 GB Components ...

Page 24: ...24 0002 0003 0001 Fig 12 Parts lists Connection set 5675 869 GB Components ...

Page 25: ...on line secondary circuit return to the heat pump 0002 Connection line secondary circuit flow to the NC Box 0003 Connection line primary circuit flow heat pump brine inlet Parts lists Connection set cont 5675 869 GB Components ...

Page 26: ... K2 S2 lJ lJ sÖ sÖ C D L N Fig 13 A Contact humidistat 24 V 10 mA B Frost stat 230 V 1 A C NC Box switching NC signal D Power supply 1 N PE 230 V 50 Hz E Frost protection valve brine F 3 way diverter valve heating cooling G Primary cooling circuit pump H Secondary cooling circuit pump Connection and wiring diagram Connection and wiring diagram 5675 869 GB Appendix ...

Page 27: ...ture Operation C 2 to 30 Storage and transport C 30 to 60 Hydraulic connections Primary circuit flow NC Box brine inlet outlet G 1 Flow return heating cooling circuit separate cooling circuit G 1 Flow return secondary circuit to the heat pump G 1 Power supply 1 N PE 230 V 50 Hz Specification Specification 5675 869 GB Appendix ...

Page 28: ...0 A16 2001 EN 50366 2003 11 EN 55014 2002 09 EN 60 335 2 40 1997 A1 2000 In accordance with the following Directives this product is designated with _ 73 23 EEC 98 37 EC 89 336 EEC 2002 95 EC 97 23 EC 2002 96 EC Details according to the Pressure Equipment Directive 97 23 EC Category I module A Allendorf 12 April 2011 Viessmann Werke GmbH Co KG Authorised signatory Manfred Sommer Declaration of con...

Page 29: ...Function 4 Fuse 15 H Heat pump control unit 14 15 Heat pump control unit fuse protection 14 Hydraulic connection 5 9 Hydraulic connections 4 8 Hydraulic connection set 5 7 10 I Installation 7 Installation room 6 Isolators 14 K KM BUS cable 12 KM BUS distributor 13 L Luster terminals 13 M Main PCB 13 Mains isolator 15 Mixer extension kit 13 Mounting rail 21 N Natural cooling 12 NC signal 26 P Param...

Page 30: ...8 11 13 15 21 23 Terminal strip Earth conductor 13 Neutral conductor 13 Tightening torques 10 Transport 6 Type plate 18 U Underfloor heating 9 V Validity 4 VDE regulations 14 W Wall mounting bracket 21 Weight 27 Keyword index Keyword index cont 5675 869 GB ...

Page 31: ...31 5675 869 GB ...

Page 32: ...ood 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 www viessmann com 5675 869 GB Subject to technical modifications ...

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