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Vaillant geoTHERM VWS Series, Installation Instructions Manual

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11

Installation instructions geoTHERM VWS/VWW 0020057444_01

3.2 Regulations, 

rules, 

guidelines 

3.2.1 

Preliminary remarks for room
sealed appliances

This appliance should only be installed in conjunction 
with either a Vaillant flue system or an alternative ap-
proved system (details of flue approval categories can 
be found in the technical section of the installation man-
ual). Install the flue system as detailed in the separate 
flue installation instructions supplied with this boiler.

3.2.2 Related 

documents

The installation of the boiler must be in accordance with 
the relevant requirements of Gas Safety (Installation 
and Use) Regulations 1998, Health and Safety Document 
No. 635 (The Electricity at Work Regulations 1989), 
BS7671 (IEE Wiring Regulations) and the Water Supply 
(Water Fitting) Regulations 1999, or The Water Bylaws 
2000 (Scotland). It should also be in accordance with 
the relevant requirements of the Local Authority, Build-
ing Regulations, The Building Regulations (Scotland), 
The Building Regulations (Northern Ireland) and the rel-
evant recommendations of the following British Stand-
ards:
BS 6700: Services supplying water for domestic use 
within buildings and their curtilages.
BS 6798: Specification for installation of gas fired boil-
ers not exceeding 60 kW input.
BS 6891: Specification for installation of low pressure 
gas pipework up to 28 mm (R1) in domestic premises 
(2nd family gas).
BS 7593: Treatment of water in domestic hot water cen-
tral heating systems. Institute of Gas Engineers Publica-
tion IGE/UP/7/1998: "Guide for gas installations in tim-
ber framed housing"
BS. 5482 Pt. 1 Domestic butane and propane gas burn-
ing installations.
IGE/UP1 Soundness testing and purging of industrial and 
commercial gas installation.
IGE/UP2 Gas installation pipework, boosters and com-
pressors on industrial and commercial premises.
IGE/UP10 Installation of gas appliances in industrial and 
commercial premises.
BS. 6644 Installation of gas fired hot water boilers of 
rated inputs between 60 kW and 2 MW (2nd and 3rd 
family gases).
BS. 5449 Forced circulation hot water central heating 
systems for domestic premises. Note: only up to 45 kW.
BS. 6880 Low temperature hot water heating systems 
of output greater than 45 kW.
Part 1 Fundamental and design considerations.
Part 2 Selection of equipment.
Part 3 Installation, commissioning and maintenance.
BS. 4814 Specification for: Expansion vessels using an 
internal diaphragm, for sealed hot water heating sys-
tems.
BS. 5440 Installation and maintenance of flues and ven-
tilation for gas appliances of rated input not exceeding 
70 kW net (1st, 2nd and 3rd family gases).

Part 1 Specification for installation of flues.
Part 2 Specification for installation and maintenance of 
ventilation for gas appliances.

3.3 Coolant

The heat pump is delivered with an operational filling of 
R 407 C coolant. This is a chlorine-free coolant which 
does not affect the Earth's ozone layer. R 407 C is nei-
ther a fire hazard nor an explosion risk.
However, maintenance work and interventions into the 
coolant circuit may only be undertaken by an expert 
technician with appropriate protective equipment.

d

 Danger!

R 407 C coolant!
Do not inhale gases or vapours emanat-
ing from leaks in the coolant circuit. 
Risk to health! Avoid contact with the 
skin and eyes. Escaping coolant can 
cause freezing if the exit point is 
touched! R 407 C coolant presents no 
danger in normal use and under normal 
conditions. With improper use, however, 
it can cause injury and damage.

a

 Caution!

This appliance contains the coolant, 
R 407 C. The coolant must not be al-
lowed to escape into the atmosphere. 
R 407 C is a fluorinated greenhouse gas 
covered by the Kyoto Protocol, with a 
GWP of 1653 (GWP = Global Warming 
Potential).
Before the appliance is disposed of, the 
coolant it contains must be  completely 
drained into a suitable vessel so that it 
can then be recycled or disposed of in 
accordance with the regulations.
The relevant work in connection with the 
coolant may only be carried out by offi-
cially certified specialists.
Draining or filling with new coolant (see 
identification plate for quantity) may 
only be carried out via the service 
valves. All warranties become void if any 
approved replacement coolant other 
than the R 407 C recommended by Vail-
lant is used.

Safety instructions and regulations 3

Summary of Contents for geoTHERM VWS Series

Page 1: ...For the heating engineer Installation instructions geoTHERM Heat pump VWS VWW GB ...

Page 2: ... 6 4 1 Unblocked mains supply Electroplan 1 26 6 4 2 Dual circuit feed heat pump tariff Electroplan 2 27 6 4 3 Dual circuit feed special tariff Electroplan 3 28 6 4 4 Connecting external components 29 6 5 Connecting the start up current limiter accessory 29 6 6 Controller PCB at a glance 30 6 7 Wiring the controller PCB 31 6 7 1 Connecting the VR 10 standard sensor 31 6 7 2 Direct heating operatio...

Page 3: ... serious injury or death e Danger Danger of death by electric shock H Danger Danger of burning and scalding a Caution Potentially dangerous situation for the product and environment h Note Useful information and instructions Symbol for a necessary task Contents Notes on the documentation 1 8 10 Parameters that can be set with vrDIALOG 810 2 66 9 Inspection and maintenance 68 9 1 General notes 68 9...

Page 4: ...egulations Nevertheless there is still a risk of death or serious injury to the user or others or of damage to the device and other property in the event of improper use or use for which it is not intended This unit is not intended for use by persons including children having limited physical sensory or mental ca pacities or who have inadequate experience and or knowledge unless they are supervise...

Page 5: ...d maximum power Rated power compressor pumps and controller Rated power auxiliary heating Start up current without start up current limiter 16 A Start up current with start up cur rent limiter Service water tank capacity Permissible rated overpressure Coolant type Filling quantity Permissible rated overpressure COP B0 W35 Performance figure at a brine tem perature of 0 C and a heating flow tempera...

Page 6: ...m consists of separate circuits which are cou pled to one another by means of heat exchangers These circuits are The heat source circuit by means of which the energy from the heat source is transported to the coolant cir cuit The coolant circuit which releases its heat to the heating water circuit by means of evaporation com pression liquefaction and expansion The heating water circuit which suppl...

Page 7: ...g can be switched in by means of the integrated controller To prevent the formation of condensate in the interior of the unit the pipes of the heat source circuit and the coolant circuit are insulated Should condensate appear however it is collected in a pan inside the unit see Fig 2 7 and fed away underneath it Drop formation under the unit is thus possible 2 3 Design of the heat pump The Vaillan...

Page 8: ...feed 2 3 1 Component groups VWS 15 16 14 13 12 11 1 9 3 2 5 4 6 7 8 10 Fig 2 6 VWS Front view covers removed Key to Fig 2 6 1 Electrical connections 2 Controller PCB under cover plate 3 Contactors 4 Safety thermostat STL for the auxiliary heating 5 Electric auxiliary heating 6 Condenser 7 CH pump 8 Fill drain valve for heating circuit 9 Identification plate 10 Compressor 11 Condensate pan 12 Expan...

Page 9: ...ede termined values so that the heat pump can work opti mally However you can individually set and adapt the operating modes and functions afterwards You will find all the information on operating modes auxiliary and special functions in Chapter 8 Control system The heat pump is equipped with numerous automatic auxiliary functions to ensure trouble free operation see also Chap 8 2 Automatic auxili...

Page 10: ...ilure to observe these instructions Find out the transport and operating weights of the heat pump from the Technical Data and take heed of them during transportation and installation Pay particular at tention to Chap 4 2 Requirements of the installation site before assembly d Danger The coolant circuit is pressurised Fur thermore high temperatures can arise The appliance may only be opened and ser...

Page 11: ...culation hot water central heating systems for domestic premises Note only up to 45 kW BS 6880 Low temperature hot water heating systems of output greater than 45 kW Part 1 Fundamental and design considerations Part 2 Selection of equipment Part 3 Installation commissioning and maintenance BS 4814 Specification for Expansion vessels using an internal diaphragm for sealed hot water heating sys tems...

Page 12: ...idge over the power company blocking periods VIH and VDH domestic hot water cylinder The Vaillant VIH coiled tube tank and the Vaillant VDH double wall tank are specially designed to be combined with heat pumps and are used for heating and storing hot water VPA combination cylinder The Vaillant VPA combination cylinder can be fed from various energy sources and is used for heating both heating wat...

Page 13: ...ctions geoTHERM VWS VWW 0020057444_01 4 3 Dimensions and clearances 600 100 140 140 75 75 1200 0 10 1 600 835 650 Fig 4 1 Dimensions and clearances 1 Adjustable feet adjustable in height by 10 mm Assembly and installation 4 ...

Page 14: ...a 1 1 2 3 3 Fig 4 3 Preparatory work in the installation area Make sure that the substrate is sufficiently stable see Chap 4 2 Requirements for the installation site Make at least two bore holes bearing in mind the di mensions of the unit and its connections 1 Each pipe from the heat source requires its own bore hole Special pipe feedthroughs must be used if there is a risk of ground water penetra...

Page 15: ...pliance an air dirt separator in the return line of the heating circuit To avoid energy losses in accordance with the Energy Saving Order EnEV and to protect against freezing all connection lines must be provided with thermal insula tion The pipes must be dirt free if necessary flush them thoroughly before filling a Caution Risk of damage Do not add any antifreeze or corrosion protection agents to...

Page 16: ...al support rings for heat source circuit connection elbows Table 4 2 Scope of delivery The frame for the operating console is already fastened to the heat pump casing on delivery 4 8 Unpacking the unit and checking the delivery 2 x Fig 4 5 Removing the transport securing device Carefully remove the packaging and padding taking care not to damage any parts of the unit Unfasten the transport securin...

Page 17: ... is appropriately constructed When using a barrow take note Only use the barrow on the rear side of the heat pump as the weight distribution is then the most fa vourable Fasten the heat pump with a restraining strap Use a ramp when pushing the barrow from the pallet e g a batten and a sturdy board 4 10 Installing the heat pump 0 10 mm Fig 4 8 Adjusting the feet Pay attention to the minimum wall cl...

Page 18: ...ps by pulling it gently upwards Unfasten the screws for the upper cover which are concealed beneath it Remove the upper cover in an upwards direction Fig 4 10 Removing the front lower cladding Unfasten the two screws on the console frame and pull it together with the front lower cladding away from the casing Fig 4 11 Removing the front upper cladding Unfasten the two screws on the front of the fro...

Page 19: ...ces the heating output Fit bleed valves as required 3 4 5 6 7 2 1 Fig 4 12 Fitting the connection elbows Key to Fig 4 12 1 Heating feed 2 Heating return 3 Return to domestic hot water cylinder 4 Heat source to the heat pump 5 Heat source from the heat pump 6 Insulating pad 7 Blanking plugs a Caution To avoid leaks take care that the cor rect seals are used on the connecting el bows Leaks can resul...

Page 20: ...14 Fitting the brine expansion tank h Note The brine expansion tank has a capacity of approx 6 litres and is thus adequate for brine circuits up to a maximum of 1900 litres a Caution Material damage resulting from escaping brine The screw couplings on the brine expansion tank must be sealed with hemp Sealing with e g teflon tape can lead to leaks in the brine circuit Fit the bracket for the brine ...

Page 21: ...ciated heating circuit timer programme heating curve etc and to select the special functions party etc In addition it is possible to query the heating circuit and to display service and fault messages For assembly of the VR 90 remote control unit see its enclosed installation instructions Regarding installation see Chapter 6 9 1 4 15 Installing the VR 60 mixer module With the mixer module you can ...

Page 22: ...30 ethylene glycol water max 33 propylene glycol water potassium carbonate water max 60 ethanol water Heat source to the heat pump Heat source from the heat pump 66 64 58 62 59 60 29 57 61 67 65 Fig 5 1 Brine circuit Key to Fig 5 1 29 Brine pump 57 Stop valve 58 Bleed valve 59 Brine expansion tank 60 Expansion relief valve 61 Stop valve 62 Stop valve 64 Stop valve 65 Brine collecting tank 66 Brine...

Page 23: ...pump 67 Take care that the pressure does not exceed 3 bar Now close valve 62 as well Switch off the filling pump 67 and remove the filling hose Open the expansion relief valve 60 to allow any pos sible overpressure to discharge The brine expansion tank must be 2 3 full of fluid Make sure that valve 61 is closed Fill any remaining brine fluid into a suitable container e g plastic canister for toppi...

Page 24: ...pump controller and for this reason the sensor lines must be run absolutely correctly Low current lines must be run at an ade quate distance from high current lines If low and high current lines are run in par allel a minimum distance of 25 cm ap plies for lengths greater than 10 m At start up the controller automatically checks for the correct phase sequence Switch two phases over if there is an ...

Page 25: ...e the control box not shown here small two way plug connecting cable for the operating console large three way plug power supply for vrnetDIALOG A control cable for the vrnetDIALOG is also supplied ac cessories 6 4 Connecting the power supply Different types of power supply are provided for heat pumps by the power companies The heat pump can be operated with various types of mains feed Three types...

Page 26: ...s on a single tariff one consumer meter 1 The power company re serves the right to switch off the compressor and the auxiliary heating as required by means of a ripple con trol signal The duration and frequency of the shut downs is determined by the company or should be clari fied with them Connect the power supply to the principal mains feed 1 Connect the ripple control signal relay to terminal 1...

Page 27: ...ry consumers auxiliary heating circulation pumps controller etc must be ensured via a meter The low tariff supply 1 for the compressor is effected via a second meter and can be interrupted by the power company at peak times Remove the jumpers dashed lines 3 Connect the permanent power supply to the high tar iff mains feed 2 Connect the low tariff power supply to the low tariff mains feed 1 Connect...

Page 28: ...sumers circulation pumps controller etc must be ensured via a meter The low tariff sup ply 1 for the compressor and the auxiliary heating is effected via a second meter and can be interrupted by the power company at peak times Remove the jumpers dashed lines 3 Connect the permanent power supply to the controller mains feed 2 Connect the low tariff power supply to the low tariff mains feed 1 Connec...

Page 29: ... terminals 1 The well pump is connected to the 400 V three phase supply via the well pump contactor A motor protection switch in the heat pump see Fig 6 1 Item 5 protects the well pump from overload The switch should be set to the well pump s rated current 0 8 2 7 A a Caution Risk of damage The well pump will not be protected from overload unless the motor protection switch is properly set VWS onl...

Page 30: ... 13 EVU EVU contact supply interruption ripple control sig nal from power company open compressor operation permitted closed compressor operation blocked 14 1xZP Contact for non recurring request for the circulation pump e g via pushbutton PCB components 15 eBUS vrDIALOG 16 eBUS address rotary switch set to 1 factory setting 17 Fuse T 4A 250 V 18 Check LED for power supply lights green if OK 19 Fu...

Page 31: ...ional sensors are required as flow return collector or cylinder sensors depending on the configuration of the system The VR 10 standard sensor is so designed that it can be used as an immersion sensor e g as a cyl inder sensor in a cylinder sensor tube or as a flow sen sor in a hydraulic switch Using the enclosed cable tie you can also attach it as a contact sensor to the heating flow or return pi...

Page 32: ...alve with position indication 32 Cap valve 33 Air separator Dirt filter 42a Expansion relief valve 42b Expansion vessel 43 Safety group for hot water pipe VF2 Supply temperature sensor WQ Heat source circuit optional for hydraulic decoupling 27 Heating circuit pump with control line to the heat pump 39 Low loss header h Note Should hydraulic decoupling of the heat ing circuit be necessary then fit...

Page 33: ...nds to a demand for heat from the buffer cylinder VF1 46 VF2 27 RF1 42b 42a 32 33 30 31 30 31 M 400 V 400 V AF WQ 16 Fig 6 9 Hydraulic plan 2 Key to Fig 6 9 16 External sensor AF 27 CH pump 30 Non return valve 31 Control valve with position indication 32 Cap valve 33 Air separator Dirt filter 42a Expansion relief valve 42b Expansion vessel 46 3 way mixer valve VF1 Buffer cylinder head temperature ...

Page 34: ... pump 30 Non return valve 31 Control valve with position indication 32 Cap valve 33 Air separator Dirt filter 42a Expansion relief valve 42b Expansion vessel 43 Safety group for hot water pipe VF2 Supply temperature sensor SP Cylinder temperature sensor WQ Heat source circuit KW Cold water optional for hydraulic decoupling 27 Heating circuit pump with control line to the heat pump 39 Low loss head...

Page 35: ...linder SP 42a AF 43 25 KW 42b 32 VF1 46 VF2 27 RF1 55 30 31 30 30 31 M WQ 33 400 V 400 V Fig 6 11 Hydraulic plan 4 Key to Fig 6 11 16 External sensor AF 25 Circulation pump 27 CH pump 30 Non return valve 31 Control valve with position indication 32 Cap valve 33 Air separator Dirt filter 42a Expansion relief valve 42b Expansion vessel 43 Safety group for hot water pipe 46 3 way mixer valve VF1 Buff...

Page 36: ...control the first eight heating circuits vrnetDIALOG 840 2 or 860 2 Connection in each case to the eBUS terminal Fig 6 6 Item 11 connected in parallel 6 9 1 Installing the VR 90 remote control unit The VR 90 remote control units communicate with the heating controller via the eBus You can connect them to any interface in the system You need only make sure that the bus interfaces are connected to t...

Page 37: ...tDIALOG to the mounting panel of the operating console using the self tapping screws 1 and 2 from the accessory bag For fixing see also the vrnetDIALOG manual Pass the power supply cable present within the heat pump 5 through the opening in the upper front clad ding and connect it to the vrnetDIALOG unit Next pass the connecting cable 6 from the operating console through the opening in the upper f...

Page 38: ...L2 L3 L1 N ABB A12 30 01 ABB A12 30 01 1 L L L L L 1 L N N N N N 2 N 2 1 2 1 L N 2 3 4 5 SCH 6 7 8 ASB N N Auf Zu L N 1 2 1 2 1 2 1 2 1 2 1 2 DCF OT AF Auf Zu ZH N L ZP N L SK2 P N L HK2 P HK2 M VF2 RF1 VF1 SP BUS DCF AF EVU 1xZP LP UV 1 N N Auf Zu L ZH LP UV 1 Fig 6 19 Connecting to a boiler without an eBUS interface Key to Fig 6 19 1 Isolating relay Accessory No 306249 In both cases the heat pum...

Page 39: ...y must remain secured inside the heat pump Fig 6 22 Fitting the front lower cladding Press the lower cladding panel into the spring retainer on the casing and securely screw the console frame to the casing using the two screws as shown in Fig 6 5 Fig 6 23 Fitting the upper cover Attach the upper cover and screw it down securely with the two associated screws Press the pipe access cover into the sp...

Page 40: ...ting and connecting the operating console Connect the connecting cable to the operating con sole Fig 6 25 Fitting the front panel of the operating console Insert the front panel of the operating console into the spring retainer on the console frame 6 Electrical installation ...

Page 41: ...the points noted there have been satisfied Before you actually start up the heat pump familiarise yourself with the controller interface described below 7 2 Operating the controller 7 2 1 Finding your way around the controller Basic data Date Day of week Time Set day 2 1 3 4 5 6 Fig 7 1 Operating overview Key 1 Menu name 2 Cursor indicating the selected parameter 3 Menu number 4 Dial Set parameter...

Page 42: ...ctioning of the sensors in use is checked If the self test was not successful an error message ap pears on the controller display see Chap 10 Trouble shooting and diagnosis Switch on the circuit breaker so that the heat pump is supplied with power The heat pump starts the controller software is initial ised Vaillant Loading Fig 7 2 Controller being initialised After a short time the controller is ...

Page 43: ... the end Installation completed A9 Exit mode yes Values can be set Fig 7 5 Menu A9 Ending the installation Only set Exit mode to YES if you are sure that everything has been set correctly Once you have confirmed with YES the controller switches to the graphics display The heat pump starts under its autonomous control system 7 4 Bleeding the brine circuit VWS only To bleed the brine circuit activat...

Page 44: ...s below 3 C Cylinder frost protection This function starts automatically if the current DHW temperature falls below 10 C The cylinder is then heat ed to 15 C This function is also active in the Off and Auto operating modes regardless of the timer pro grammes Checking the external sensors The necessary sensors are configured using the basic hydraulic circuit that you specified during the initial co...

Page 45: ...uring the period of absence See Table 8 3 Menu 4 Holiday programming Party function The party function permits you to extend the current heating and hot water periods beyond the next switch off time to the start of the next heating period See Chap 8 9 Energy saving function This function allows you to set back the heating for an adjustable period of time See Chap 8 9 Cooling Cooling mode is only p...

Page 46: ... operating mode simplifies the diagnosis of heat pump functions by speeding up the energy balancing in hydraulic plan 1 or 3 by a factor of 60 It is used as a test function See Chap 8 10 Fixed value controlling Using this function you can set via vrDIALOG a fixed flow temperature independently of the weather control led control system See Chap 8 10 8 4 Description of the controller 8 4 1 Possible ...

Page 47: ...his display reappears automatically if you do not actuate any of the dials for a long time when setting values In the following illustrations you can see all the control ler screens in an overview in the form of a flow chart You will find descriptions of the individual screens in the sections that follow them Controller operation is subdivided into three levels The Operator level is intended for t...

Page 48: ...y of the week 2 HK2 Time programme 5 Mo 1 00 00 24 00 3 Select day of the week 2 HK2 Time programme 5 Mo 1 00 00 24 00 3 Select day of the week 2 Domestic hot water Time programme 5 Mo 1 06 00 22 00 3 Select day of the week 2 Circulation pump Time programme 5 Mo 1 06 00 22 00 3 Select day of the week 2 Holiday programming for cpl System 6 Periods 1 06 01 08 08 01 08 12 ºC Room Temp setpoint Set st...

Page 49: ...int flow temp 41 C Current flow temp 29 C Status of pump OFF Status hydr mixer OPEN HK2 Information C4 Setpoint flow temp 41 ºC 30 ºC Flow Temp VF2 OFF Status of pump 183ºmin mins lag gain HK2 Parameterss C5 Raumaufschaltung Keine Fernbedienung JA 23 C Values can be set HK2 Parameterss C5 Raumaufschaltung Keine Fernbedienung JA 23 C Values can be set HK2 Parameters C5 Switch on room temp None Remo...

Page 50: ...7 Venting prog Select OFF Ventilation Installation assistent Language selection A1 Language GB english Select language I5 Reset NO Code 1 0000 Code 2 FFFF Codes accepted Select NO Tool Component Test 1 A5 HK2 P ON ZP OFF ZH OFF SK2 P OFF Tool Component Test 2 A6 Component VR60 Adr 4 Actuators OFF Sensors VFa 29ºC Select Diagnosis D1 Test Comp High Pressure 0 ºC T outlet compresor 66 ºC Refrigerant...

Page 51: ... with the output of the heat source the compres sor output When the compressor or the electric auxiliary heat ing is switched on the arrow is shown filled Left and right flash when the compressor is switched on and energy is consequently being taken from the environment and fed to the heating system Right flashes when energy is being supplied to the heating system e g only from the electric aux il...

Page 52: ...w tem perature the heating system pressure and the heat source pressure are displayed Current flow temp Current flow temperature in the unit CH pressure Heating circuit pressure sensor Brine pressure Heat source pressure Pressure sensor for heat source circuit brine pressure CH comp only this status message gives information about the current operating status Possible messages are CH comp only CH ...

Page 53: ...n the Heating and Energy saving modes in accordance with a presettable timer programme Eco the operation of the heating circuit alternates between the Heating and Off modes in accord ance with a presettable timer programme The heating circuit is switched off during the set back period provided the frost protection function which depends on the outside temperature is not activated Heating the heati...

Page 54: ...r cylinder Min hot water temp 44 C HK2 5 Time programme Mo 1 00 00 24 00 2 3 Select day of the week You can set the heating times for each heating cir cuit in the HK2 timer program menu Up to three heating times can be programmed per day or block The control system operates according to the heating curve and the room setpoint tempera ture Mon Fri 0 00 24 00 DHW loading 5 Time programme Mo 1 06 00 ...

Page 55: ...od 1 01 01 2003 01 01 2003 Period 2 01 01 2003 01 01 2003 Room Temp set point 15 C Basic data 7 Date 21 04 08 Day of week Mo Time 09 35 Values can be set In the Basic data menu you can set the current date the day of the week and if no DCF radio re ception is possible the current time for the control ler These settings apply to all connected system compo nents Code layer 8 Code number 0 0 0 0 Stan...

Page 56: ... will not be able to make any more changes in the code level 1000 HK2 C2 Parameters Type direct circuit Heating curve 0 80 Max limit outs temp 21 C Comp start at 120 min Values can be set Type Direct circuit for direct hydraulics Mixer circuit for buffered hydraulics Fixed value can only be set via vrDIALOG 810 2 Heating curve Adjustable heating curve not with fixed value Maximum limit outside tem...

Page 57: ...ral times for each heating circuit HK2 C5 Parameters Switch on room temp None Remote control Yes 23 C Values can be set Only when using the VR 90 VR 80 remote control Switch on room temperature None Room temperature from the remote control is not taken into account Switch on In addition to the selected heating curve the heating flow temperature is also affected by the difference between the setpoi...

Page 58: ...d for post heating in heating mode below this temperature can be set in Menu A3 no CH no CH Cooling C8 Max Flow Setpoint 22 C Select The menu is only displayed for hydraulics with cool ing mode Flow temperature Display of target flow tempera ture The value can be changed Cooling mode is only possible when using the VWZ NC 14 17 accessory and only for VWS 14 and VWS 17 heat pumps 20 C Legionella pr...

Page 59: ...y of temperature sensor T2 diagnosis D2 refrigerant circuit overheat 4 K Subcooling 10 K Temp TEV inlet 10 C Superheating of the coolant calculated from T2 and low pressure sensor Only displayed when the com pressor is operating Subcooling of the coolant calculated from T4 and high pressure sensor Only displayed when the com pressor is operating Temp TEV inlet Temperature at the inlet of the therm...

Page 60: ...ch the errors occurred The error code identifies the error You will find a listing in Chap 10 Turning the dial shows the next error Statistics I2 Compressor hours 7 hours Compressor starts 33 Aux heating hours 2 hours Aux heating starts 21 Compressor hours Compressor operating hours to date Compressor starts Number of compressor starts Aux heating hours Auxiliary heating operating hours to date Au...

Page 61: ...t pump type has already been set at the fac tory and may not be changed Hydraulic plan 1 no buffer cylinder no DHW cylinder 2 with buffer cylinder no DHW cylinder 3 no buffer cylinder with DHW cylinder 4 with buffer cylinder with DHW cylinder See Figs 6 8 to 6 11 Note Other hydraulic plans may only be set if the VWZ NC 14 17 accessory is used More detailed infor mation regarding this can be found ...

Page 62: ...ost heating in the heating mode if the out side temperature is below this value intern 5 C Installation assistant A4 Geothermal settings Freeze protect temp 10 C Values can be set VWS only Freeze protect temp Minimum permissible heat source outlet temperature If the temperature falls below this value error mes sage 21 22 or 61 62 appears and the compressor switches off VWW Freeze protect temp 4 ºC...

Page 63: ...sary Tool A8 Outside temperature 0 0 K DHW sensor SP 0 0 K T Flow Mix OffsetVF2 0 0 K Buffer sensor RF1 0 0 K Manual adjustment of the displayed temperatures Offset adjustment range Outside temperature 5 K step size 1 0 K all others 3 K step size 0 5 K Flow sensor VF2 temp is always displayed Internal sensors can only be changed via vrDIALOG buffer sensors and cylinder sensors only if the corre sp...

Page 64: ...tion has completed time expires or if the dial is pressed Display shown Description We 16 02 08 9 35 Energy saving enabled Select stop time Energy saving function You can reduce the heating times for a presettable period using the energy saving function Enter the time for the end of the energy saving function in the format hh mm hours minutes We 16 02 08 9 35 Party function enabled Party function ...

Page 65: ...settings Keep the dial and the dial pressed down simultaneously for longer than 5 seconds After that you can select whether to reset only the timer programs or all values to the default settings Display shown Description We 21 04 08 9 35 Factory setting cancel NO YES Time programme NO YES Everything NO YES Values can be set The default settings will be reinstated Caution Leave the resetting of the...

Page 66: ... ditional heating circuits appear in the display HK2 HK2 Software version The status provides information about the operating state of the heat pump software Elec Tariff switch Status of power interruption due to activation of the EVU contact blocking initiated by the power company no no blocking yes blocking active activation by means of e g ripple control signal receiver Phase Status Phase statu...

Page 67: ...Setpoint flow temperature Hysteresis 7 K Compressor starts Comp starts h max allowable no of compressor starts per hour 3 5 3 Max CH return temp HK46 C Max CH return temp HK Sets the return temperature limits for compressor operation This function should pre vent unnecessary short term operation of the compres sor 46 C Delta T T3 T7 Delta T T3 T7 Max permissible difference between the heat source ...

Page 68: ...lar intervals Check the dirt filter in the water circuit regularly Check the pressure in the heating circuit regularly 9 3 Servicing and repairs The Vaillant geoTHERM heat pump requires no servicing work To carry out repairs to defective parts on the inside of the heat pump Remove the heat pump cladding sections in the re verse order to that described in Chap 6 4 9 4 Test operation and restarting ...

Page 69: ... the ProE plugs on the PCBs check the sen sor for correct functioning replace sensor 5 XXXX setpoint not achieved XXXX setpoint not achieved Check temperature setpoint Check position of temperature sensor Deactivate temperature error detection C13 Table 10 1 Malfunctions of eBUS components 10 3 Displays in the error memory and under Warning message The heat pump including the compressor remains in...

Page 70: ...Check the plug contact on the PCB and the cable harness check the sensor for correct position and function resistance measurement using VR 11 characteristics see Appendix replace sen sor Check the volume flow of the well pump brine pump optimum temp difference approx 3 5 K Fit clean dirt filter 22 VWS only Heat source outlet frost protec tion monitoring Source outlet temperature T8 too low Freeze ...

Page 71: ...gged or in correctly dimensioned Clean dirt strainers Stop valves closed Open all stop valves Coolant flow rate too low e g ther mal expansion valve TEV incorrectly adjusted or defective Check coolant circuit 28 Coolant pressure too low The integral low pressure switch has tripped at 1 25 bar g Heat source providing too little heat Possible causes VWS only Air in heat source circuit Bleed the heat...

Page 72: ...e or not properly plugged into the PCB Check the plug contact on the PCB and the cable harness check the sen sor for correct position and function resistance measurement using VR 11 characteristics see Appendix re place sensor 41 Error heat source sensor T3 Short circuit in sensor possible The internal sensor for the source inlet temperature is defective or not properly plugged into the PCB 42 Err...

Page 73: ... pump or pump output has reduced Test heating circulation pump replace if necessary Existing dirt strainers clogged or in correctly dimensioned Clean dirt strainers Mixer behind buffer cylinder is defec tive Test mixer replace if necessary Max HK temp set too low Check Max HK temp setting 81 Coolant pressure too high Error 27 occurred three times in succession possible See Error 27 See Error 27 83...

Page 74: ...ry heating does not function even though it has been enabled by the con troller e g when the supply has been blocked by the power supply company Power company blockage the heating or the domestic hot water cylinder do not reach the desired temperature The auxiliary heating is tied to a low rate tariff which has been blocked by the power company Check whether the auxiliary heating is on a low rate ...

Page 75: ...resents no danger in normal use and under normal conditions With improper use however it can cause injury and damage a Caution Environmental hazard Before disposal of the heat pump the coolant must be disposed of at special facilities 12 Customer service and guarantee 12 1 Vaillant warranty Vaillant provide a full parts and labour warranty for this appliance The appliance must be installed by a su...

Page 76: ...essure min inlet temperature max inlet temperature MPa bar C C Ethylene glycol 30 0 3 3 10 20 Nominal flow rate dT 3K Residual head dT 3K Nominal flow rate dT 4K Residual head dT 4K Electrical power consumption pump l h mbar l h mbar W 1431 386 1073 464 132 1959 327 1469 426 132 2484 272 1863 386 132 3334 252 2501 428 205 3939 277 2954 487 210 CH circuit max operating pressure min flow temperature...

Page 77: ...N PE 230 V 50 Hz 3 N PE 400 V 50 Hz Fuse slow blow A 3 x 16 3 x 16 3 x 16 3 x 25 3 x 25 Start up current without start up current limiter with start up current limiter A A 26 16 40 16 46 16 64 25 74 25 Electrical power consumption min for W10W35 max for W20W60 Auxiliary heating kW kW kW 1 5 3 1 6 2 1 3 8 6 2 5 4 9 6 3 5 6 8 6 4 3 7 7 6 EN 60529 level of protection IP 20 Hydraulic connections Heati...

Page 78: ...ance figure COP W10W35 dT10 Heating output Power consumption Performance figure COP W10W55 Heating output Power consumption Performance figure COP kW kW kW kW kW kW 8 2 1 6 5 2 8 5 1 5 5 6 7 5 2 3 3 3 11 6 2 1 5 5 11 6 2 1 5 7 10 2 3 0 3 5 13 9 2 6 5 3 14 0 2 5 5 5 13 3 3 5 3 8 19 6 3 7 5 3 20 1 3 5 5 7 19 2 5 1 3 8 24 3 4 6 5 3 23 9 4 3 5 6 23 4 5 9 3 7 Internal sound level dbA 46 48 50 52 53 Con...

Page 79: ...incorporated Were the pipes insulated with thermal insulation Was the heating circuit flushed filled and bled Was the heating circuit checked for leaks Were the pipes thermally insulated against vapour diffusion Brine circuit checklist VWS only Was the brine circuit pressure tested with water and checked for leaks Were the water antifreeze mixing proportions 2 1 adhered to Was the frost protection...

Page 80: ...fit ted on the customer side and was it appropriately labelled Were all electrical connections properly made and in accordance with the specified electrical circuit diagrams Was the protective earth properly connected Do all conductors have the required cross sections Were the required automatic safety devices used and labelled in accordance with the conductor cross sections and installation metho...

Page 81: ...n Please fill in the following tables to facilitate any servicing work that may arise Installation and commissioning were carried out by Heat source construction Date Company Name Telephone Electrical installation Date Company Name Telephone Start up Date Company Name Telephone Reference 15 ...

Page 82: ... heat pump Details regarding the domestic hot water cylinder Domestic hot water cylinder type Domestic hot water cylinder capacity Electric auxiliary heating Yes No Details regarding room thermostats VR 90 other none Details regarding the heat source system Details Ground probe number drilling depth spacing between probes Number of probes Spacing between probes Drilling depth of the probes Details...

Page 83: ... system Details Checks before handing over to the user Pressure of the heating circuit in a cold state Does the heating system get warm Does the water in the DHW cylinder get warm Controller settings Were the basic settings made on the controller Was the anti Legionella function programmed Interval and tem perature Handover to the user Details Was the user instructed on the following points Basic ...

Page 84: ...83 105 158 110 137 115 120 120 104 125 92 130 81 135 71 140 63 145 56 150 50 155 44 Table 1 Appendix VR 10 sensor characteristics VR 11 internal temperature sensors Temperature C Resistance ohms 40 327344 35 237193 30 173657 25 128410 20 95862 15 72222 10 54892 5 42073 0 32510 5 25316 10 19862 15 15694 20 12486 25 10000 30 8060 35 6535 40 5330 45 4372 50 3605 55 2989 60 2490 65 2084 70 1753 75 148...

Page 85: ...WW 0020057444_01 VRC DCF outside temperature sensor Temperature C Resistance ohms 25 2167 20 2067 15 1976 10 1862 5 1745 0 1619 5 1494 10 1387 15 1246 20 1128 25 1020 30 920 35 831 40 740 Table 3 Appendix VRC DCF sensor characteristics Appendix ...

Page 86: ...ump schematic VWS Key to Fig 1 Appendix 1 Heating circuit pressure sensor 2 Electric auxiliary heating 3 High pressure sensor 4 High pressure switch 5 Compressor 6 Low pressure sensor 7 Low pressure switch 8 Heat source circuit pressure sensor 9 Evaporator 10 Expansion Valve 11 Condenser 12 Filter drier 13 DHW return line 14 Heating return 15 Heating feed Appendix ...

Page 87: ...chematic VWW Key to Fig 2 Appendix 1 Heating circuit pressure sensor 2 Electric auxiliary heating 3 High pressure sensor 4 High pressure switch 5 Compressor 6 Low pressure sensor 7 Low pressure switch 8 Heat source circuit pressure sensor 9 Evaporator 10 Flow Switch 11 Expansion Valve 12 Condenser 13 Filter drier 14 DHW return line 15 Heating return 16 Heating feed Appendix ...

Page 88: ...een yellow green yellow green yellow green yellow green yellow green blue blue blue blue blue blue grey grey grey grey grey orange orange grey brown brown brown brown brown black black black black black black blue white white brown PE N L3 L2 L1 Main power inlet 3 x 400 V PE N Electric auxiliary heating vrnetDIALOG optional Links for starting current limiter Safety thermostat STB Heating pump Brin...

Page 89: ...n blue yellow green yellow green black orange brown grey yellow green yellow green blue blue blue blue blue blue grey grey grey grey grey brown brown brown brown black black blue grey brown black black black blue orange orange white white black brown PE N L3 L2 L1 Main power inlet 3 x 400 V PE N Electric auxiliary heating vrnetDIALOG optional Links for starting current limiter STB Heating pump Flo...

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Page 92: ...0020057444_01 GB 072008 ...

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