Viessmann VITOCAL 222-G Fiche technique

VIESMANNInstallation and serviceinstructionsfor contractorsVitocal 242-G/222-GType CHECompact Energy Tower for low energy housesFor applicability, see

Top panel dimensions (plan view)A Cable entry (length of cables inunit approx. 1300 mm)B Primary outletC Primary inletD Hydraulic connection arrayPosi

Commissioning stepsInspection stepsMaintenance steps Page! ! !• • 19. Checking the secondary pump. . . . . . . . . . . . . . . .

Removing the front panelsDangerTouching 'live' components canresult in the transfer of danger-ous body currents.Never touch the connectionsi

Filling the primary circuit, venting it and checking its pres-sure!Please noteTo prevent equipment damage,it is vital to prevent the com-pressor from

Filling and venting the heating side of the equipmentVitocal 242 Vitocal 222A Electrical component coverB Non-return valve (only withVitocal 242)C Boi

G Sight hose, Tyfocor drip container(only with Vitocal 242)H Three-way diverter valve (manual)(only with Vitocal 242)1. Open any non-return valvesinst

Filling and venting the solar side of the system (only for theVitocal 242)DangerOverheated collector areasand overheated heat transfermedium can cause

Checking the diaphragm expansion vessel of the heating cir-cuit and its pressureCarry out this test on a cold system.NoteOnly use anti-corrosion agent

CommissioningObserve the static head of the solarcircuit.Pre-charge pressure of the diaphragmexpansion vessel for the solar circuit:1.0 bar + 0.1 x st

Checking the safety valve and siphon functionVitocal 242Vitocal 222Vitocal 242:Check the function of the safetyvalves on the solar A, heating waterB a

System configurationEnable the system design used (see from page 13) and any optional compo-nents and functions at the control unit.Only required outs

Clearance dimensions (plan view)A min. 1000 mmB Vitocal 242:The required clearance for theremoval of the front panels is20 mm. Also maintain this dime

4.&Press the following keys one afterthe other:&"v" and "º"&Enter the code for heating con-tractors ("SERVICE&quo

2. Only if the code request is dis-played:Enter the code for heating contrac-tors ("SERVICE"; for details seepage 142).3. Select the require

2. Select or deselect the componentdisplayed above the keys (area C,see diagram) with "YES"/"NO".NoteThe relevant component is not

Checking the secondary pump1. Start the test program:Menu item&"Device settings"&"Contractor level"&"Commissionin

Checking the solar circuit pump (only for the Vitocal 242)1. Start the test program:Menu item&"Device settings"&"Contractor lev

1. Start the test program:Menu item&"Device settings"&"Contractor level"&"Commissioning"&"Further m

3. Start the compressor by pressing"ON".NoteThe compressor will start automati-cally after expiry of the 250 s longtest.4. Determine the tem

4. Check the following temperatureand record it in the service reportfrom page 216:The temperature at the "Sec-ondary flow" must rise (obser

Checking the compressor casing temperature1. Release the front top panel.2. Undo the screws and the crossbar.3. Start the heat pump and let it runfor

Vitocal 242Vitocal 2221. Drain the DHW cylinder from theDHW side. For this, close shut-offvalve A (only for the Vitocal 242internal) and open drain va

On-site connection requirementsA Appliance dimensionsB Recommended outlet area of on-site hydraulic connections (com-pulsory when installing with a co

6. Use a chemical cleaning agent toremove hard deposits that cannotbe removed with a high pressurecleaner.!Please noteCleaning agents contain-ing hydr

16. Record the work carried out in thecommissioning/service reportfrom 216.Replacing the impressed current anode1. Dismantle the flange lid in accor-d

1. If required, change over the three-way valve (see Fig.).2. Change the control settings (seepage 169, section "Cylinder volumefor heat pump&quo

Programming unit overviewA DisplayB Rotary selector "Reduced roomtemperature"C Rotary selector "Standard roomtemperature"D Operati

If more faults than that have occurred,the control unit acts as follows:&Messages with lower priority will bedeleted if there are messages withhig

Scanning all stored ("historic") fault messagesMenu item&"Information"&"Statistics"&"Fault history"

Fault messages Cause Measures38 Primary insensorLead broken Check the terminals and re-place the sensor, if required40 Heating circuit2 flow sensor(mi

Fault messages Cause MeasuresA6 SecondarypumpSecondary pump faulty Check the secondary pump(see page 113); replace thepump, if requiredA7 Solar heatin

Fault messages Cause MeasuresBA KM BUS mixerHC 2Communication fault mixerHC 2Check the extension kitconnections; start the ex-tension kitBB KM BUS NCm

Fault messages Cause MeasuresD3 Safety chain Fault at one of the con-nected componentsExternal safety chain;check connected compo-nents and circuits (

D Only Vitocal 242:Position (centre pipe) of the on-site drain connection DN 32 forcondensate with a wall clearancefrom 15 to 45 mmE Possible exit are

The illustration shows the position ofthe high limit safety cut-out (A: K6,B: K7, K8) on the heater rods. Forthe location of the heater rods, seepage

3. Check whether there is voltage atthe power feed to the control unit/electronics; provide power ifrequired.4. Check the plug-in and threadedconnecti

Closing the service valve&Use a new copper seal B.&When refitting the sealing cap A,counterhold the hexagon C with aspanner.&Required torq

A see page 134 B see pages 135, 136 and 137C see pages 138, 139, 140and 141Menu structure overview – Main menu133Control settings5592 969 GBService

Main menu > InformationA only for the Vitocal 242Menu structure overview – information134Control settings5592 969 GB

Main menu > Equipment settings > ProgrammingA see page 136 B see page 137C only for the Vitocal 242Menu structure overview – Programming135Contr

Main menu > Equipment settings > ProgrammingA see page 135 B see page 137C only for the Vitocal 242Menu structure overview – Programming (cont.)

Main menu > Equipment settings > ProgrammingA see pages 135 and 136 B only for the Vitocal 242Menu structure overview – Programming (cont.)137Co

Main menu > Equipment settings > Technical service levelA see pages 140 and 141 B see page 139C only for the Vitocal 242Menu structure overview

Main menu > Equipment settings > Technical service levelA see page 138 B see pages 140 and 141C only for the Vitocal 242Menu structure overview

NoteNever operate 230 V units in d.A pre-requisite for operating 230 V units in some countries is that starting cur-rents of up to 45 A are permissibl

Main menu > Equipment settings > Technical service levelA see pages 138 and 139 B see page 141C only for the Vitocal 242Menu structure overview

Main menu > Equipment settings > Technical service levelA see page 138 B see page 140Menu structure overview – Contractor level (cont.)141Contro

C see pages 135 to 137D only for the Vitocal 242Control settings by contractorsOnly those settings are described onthe following pages that are theexc

2. Enter code:Menu item&"Device settings"&"Access rights"&Enter code: SERVICE&press each 1 x&&2 x "OK

The system can be checked using this menu. For example, in case of a fault,you can check whether the cause has been removed. This check can only becar

"Relay" sub-menuNoteHere, the relays can be activated at random.Some actuators may still be switched ON when this menu is called up.!Please

&"Mixer"– – Select a mixer by pressing xand y, then select the requiredmixer position in % using the keysV/W.– – Key c puts the mixer in

As well as the procedure described in "system configuration" (see page 109),the system design can be modified at this point or additional co

The heating limit temperature defines the value of the outside temperaturebelow which central heating commences.The heating limit temperature is the r

Access&"Device settings"&"Programming"&"System definition"&"Temperature limit for red. BA"&

Heating water buffer cylinder operated in parallelHeating water buffer cylinders providea hydraulic separation of the flow inthe heat pump and heating

With activated power-OFF ("power-OFF: YES") the power supply utility canswitch off the heat that is being generated by the heat pump. This r

NoteIf the minimum return temperature has been set too low, there is more compres-sor wear due to the increase in the number of low-pressure shutdowns

Setting the minimum heat pump runtime. The heat pump only switches off whenthis time has elapsed.This setting is designed to reach long heat pump runt

A Heating commandB Primary pumpC Secondary pumpD CompressorE Start delayF Secondary pump flowG Primary pump flowH OFFK ONAccess&"Device setti

A Optimum operating rangeB Primary temperature dropC Optimum runtimeAccess&"Device settings"&"Programming"&"Heat

This parameter informs the equipment as to whether an instantaneous heatingwater heater is installed.NoteNever modify this parameter. The use of the e

Access&"Device settings"&"Programming"&"Electric heater"&"Heating with electric power"("Y

Adjustment of the time during which the electric heating is not switched ONafter changing the operating mode (reduced/standard).Access&"Devic

This setting determines, with what output (stage 1, 2 or 3, see from page 222)DHW and heating water will be boosted.Access&"Device settings&q

This setting determines whether the heat pump is used to dry the building aswell as the instantaneous heating water heater.This function must be set t

The cooling capacity depends on theheat source temperature, which itselfis subject to seasonal fluctuations.Experience has shown that the cool-ing cap

The set flow temperature of the secondary circuit is determined by the controlunit in accordance with the current heat demand.The "Flow hysteresi

Access&"Device settings"&"Programming"&"Heat pump"&"Max. step 3-way valve" (l/m)Standard setti

Any installed solar collector must be enabled in the control unit. A number ofother parameters that must be defined to make the integral solar control

A Temperature differential solar col-lector/cylinder (cylinder colder)B Start hysteresisC Stop hysteresisD Solar circuit pump switching timeE Solar ci

A Temperature differential solar col-lector/cylinder (cylinder colder)B Pump kick start hysteresisC Solar circuit pump stop hysteresisD Solar circuit

&"Solar collector"&"Pump kick runtime"&(l/m)Standard setting 00:02 minSetting range 00:01 to 00:20minPump kick dead ti

Operating instructionsDHW program temperatureOperating instructionsDHW circulation pump programOperating instructionsOperating modeDetermining the DHW

Setting of the maximum temperature inside the DHW cylinder.Renewed heating will be prevented after this temperature has been reached,until the tempera

A Set DHW temperatureB Heat pump switching hysteresis("Hysteresis")C Instantaneous heating water hea-ter switching hysteresis ("Hys-ter

Operating instructionsStop optimisationOperating instructionsDHW auxiliary functionOperating instructionsSet DHW temperature 2Operating instructionsHe

Overview of the internal componentsHR Heating returnHV Heating flowKW Cold water (connections, seefrom page 94)RL Solar return (only Vitocal 242)VL So

Coordination of the heat drawn off in the secondary circuit when the heat pumpproduces an excess of heat or the heat drawn by the secondary circuit is

Access&"Device settings"&"Programming"&"DHW"&"Max. DHW interruption"&(P/Q)Standard setting

Operating instructionsReduced temperatureOperating instructionsTemperature program, heating circuitOperating instructionsRemote controlIf a remote con

Setting FunctionStandby Equipment frost protectionReduced Constant reduced room temperatureStandard Constant standard room temperatureFixed value Oper

NoteThis setting influences the natural cooling function. If the setting is too low, thedew point monitor switches the cooling function off prematurel

Access&"Device settings"&"Programming"&"Heating circuit"&"Heating circuit 1/2"&"Exces

Preconditions: Room temperature sensor installed and enabled.This setting determines when the room temperature hook-up should be enabledin addition to

A Flow temperatureB Differential between set roomtemperature and outside tempera-tureC Heating curveD Possible positive correction range(0.1 to 10.0 K

Operating instructionsIntegral room temperature controllerPrecondition: "Room temperature control" set to "Yes".Integral proportio

NoteThis setting is only used if parameter set "1" (free parameters) has beenselected under "Mixer parameters".Setting of the time

Hydraulic diagramA Heat pump interface (see frompage 19)2 Brine accessory pack3 Brine distributor for geothermalprobes/collectors4 Geothermal probes/g

NoteObserve the requirements of DIN 1264-4. The report to be provided by the heat-ing contractor must contain the following heat-up details:&Heat-

Temperature/time profile 3 (toÖNORM)A Flow temperatureB DaysTemperature/time profile 4A Flow temperatureB DaysAccess&"Device settings"&a

A Mixer permanently closedB Mixer closes (modulating)C Mixer motor at zero voltD Mixer opensE Mixer permanently openTV Flow temperatureTVs Set flow te

Precondition: The natural cooling function is enabled.The cooling limit temperature defines the outside temperature, exceeding ofwhich triggers the na

A Flow temperatureB Outside temperatureC Cooling curveD Cooling curve with a higher level(C offset)E Cooling curve with a greater slopeAccess&&quo

NoteThis setting is only used if parameter set "1" (free parameters) has beenselected under "Cooling mixer parameters".For functio

Precondition:The "NC mixer" function is enabled.At setting "0", the heat pump control unit utilises the function of the KM BUSmixe

NoteThis function is only available for system design 2.When selecting system designs 4 and 6, the buffer cylinder will be defined auto-matically as a

Access&"Device settings"&"Programming"&"Further menu items"&"Buffer cylinder"&"Fixed

Access&"Device settings"&"Programming"&"Further menu items"&"Buffer cylinder"&"Max. t

One directly connected heating circuit, DHW heating with solar boost(option) and natural cooling function (option)NoteSolar boosted DHW heating is onl

2 Heat will be drawn off, even if the excess heat being created is not criticalfor the heat pump.Access&"Device settings"&"Prog

Room temperature sensor (Ni 500)Outside temperature sensor (Ni500)Internal sensors, temperature sen-sor in the heating water buffercylinder and collec

The only replaceable fuse is located inside the fuse holder next to the systemON/OFF switch inside the programming unit.A Fuse holderB System ON/OFF s

NoteNo physical layout is shown.A Main PCBB Programming unitC Optolink interfaceD SensorsE Stepper motor (internal)F Sensors and control inputsG Power

A X50.109B X50.108C X90.109D X90.1081 Control unit power supply con-nectionMain connection area194Connection and wiring diagrams5592 969 GB

2 Instantaneous heating waterheater (400 V) power supplyconnection3 Instantaneous heating waterheater (230 V) power supplyconnection4 Brine circuit pr

A Corresponds to area qO in fig. onpage 194B Corresponds to area 5 and wW infig. on page 194C From the ON/OFF switch (seepage 194)D Phase monitorE Com

A Corresponds to area qO in fig. onpage 194B Corresponds to area 5 and wW infig. on page 194C From the ON/OFF switch (seepage 194)D Compressor protect

A Secondary return temperaturesensorB Cylinder primary pump for inte-gral cylinder loading systemC To X50., X60. and X80.D Solar circuit pump (only fo

X50. Terminals on the inner top hatprofile rail in the control panelX60. Main connection area for exter-nal connections on the controlpanelLeft part o

Please follow these safety instructions closely to prevent accidents andmaterial losses.Safety instructions explainedDangerThis symbol warns against t

A Primary side interface (see frompage 18)B Min. 500 mm (for hydraulicseparation)1 Compact Energy Tower5 Overflow valve6 Diaphragm expansion vesselhea

A Programming unitB Optolink interfaceC on H (impressed current anodePCB) on page 198D Power supply unitE Power supply to the power supplyunit 230 V~F

K Heating element 1 to K6L Neutral conductor, instantaneousheating water heater with sepa-rate RCD circuitsM Supply (L1) heating elements 1and 2*1N Su

A Flow temperature sensor, sec-ondary circuitB Lower cylinder temperature sen-sorC Return temperature sensor;solar circuitD Upper cylinder temperature

F alternatively with an internaljumperG Stepper motor mixer heating/DHWH Flow temperature sensor, pri-mary circuitK Safety chain jumper (DHWSHC)X60. M

When ordering spare partsQuote the part and serial no. (seetype plate) and the item number of therequired part (as per this parts list).Obtain standar

072 Full wave soft starter forBWT 108/110, 400 V073 Phase monitor 400 V074 Phase monitor strapping plug400 V075 Temperature sensor076 Safety spring077

Parts list Vitocal 242-G (cont.)206Parts lists5592 969 GB

Parts list Vitocal 242-G (cont.)207Parts lists5592 969 GBService

Parts list Vitocal 242-G (cont.)208Parts lists5592 969 GB

Parts list Vitocal 242-G (cont.)209Parts lists5592 969 GBService

Electrical connection (400 V versions)Connections at the main connection area X60F Control unit power connection(230 V)G Instantaneous heating water h

When ordering spare partsQuote the part and serial no. (seetype plate) and the item number of therequired part (as per this parts list).Obtain standar

079 Heat pump module 200/108,230 V080 Heat pump module 200/110,230 V081 Brine circulation pump motor,BWT 108/110, 230 V082 Control unit AS7 for BWT 10

Parts list Vitocal 222-G (cont.)212Parts lists5592 969 GB

Parts list Vitocal 222-G (cont.)213Parts lists5592 969 GBService

Parts list Vitocal 222-G (cont.)214Parts lists5592 969 GB

Parts list Vitocal 222-G (cont.)215Parts lists5592 969 GBService

Setting and test values Set value Commis-sioningDHW cylinder interior cleaningAntifreeze concentration (brine med-ium)°C –15Testing the secondary pump

Setting and test values Set value Commis-sioningTemperature "DHW cylinder top" con-stant?Yes (±1 K)Temperature "Secondary flow" °C

Setting parameters Setting range StandardsettingCommission-ingPrimary pump flow 00:10 to 16:40 min 2:00 minSecondary pump flow 00:10 to 16:40 min 2:00

Setting parameters Setting range StandardsettingCommission-ingDHW circulation pumpprogram7-day program OFFOperating mode0 to 6*14DHW cylinder max. 20

qR Natural cooling extension kitqT Central fault message (230 V)qZ Power-OFFqI KM BUS: Vitotrol 200 remote con-trol (with room temperature sen-sor), s

Setting parameters Setting range StandardsettingCommission-ingRoom temperaturehook-up0 to 3*1Start optimisation No/Yes NoMax. flow correction 0.1 to 1

Setting parameters Setting range StandardsettingCommission-ingExcess reaction0 to 2*12Control parameter report (cont.)221Commissioning/service reports

Vitocal 242-G/222-G Type BWT 106 BWT 108 BWT 110Heat pump performance data*1Heat pump moduleType 200/106 200/108 200/110Rated outputkW 6.1 7.7 9.7Refr

Vitocal 242-G/222-G Type BWT 106 BWT 108 BWT 110Rated voltage (instanta-neous heating water hea-ter)3/N/PE 400 V/50 HzRated voltage (control cir-cuit)

Vitocal 242-G/222-G Type BWT 106 BWT 108 BWT 110&Weight, standard device kg 220 220 220&Weight, heat pump kg 50 60 65Weights Vitocal 222&T

Vitocal 242-G/222-G Type BWT 106 BWT 108 BWT 110ConnectionsPrimary flow and return(brine)optionally Rp ¾" or Multi-connect systemDN 20Heating flo

Vitocal 242-G/222-G Type BWT 106 BWT 108 BWT 110Heat pump performance data*1Heat pump moduleType 200/106 200/108 200/110Rated outputkW 6.2 7.6 9.7Refr

Vitocal 242-G/222-G Type BWT 106 BWT 108 BWT 110Rated voltage (instanta-neous heating water hea-ter)1/N/PE 230 V/50 HzRated voltage (control cir-cuit)

Vitocal 242-G/222-G Type BWT 106 BWT 108 BWT 110&Weight, standard device kg 220 220 220&Weight, heat pump kg 50 60 65Weights Vitocal 222&T

Please fax this order, together with the enclosed system layout, to your localViessmann sales office.We would ask that a competent employee of yours b

Information regarding other connectionsThe primary pump, the secondary pump, the instantaneous heating water hea-ter and the central heating/DHW three

Declaration of conformity for Vitocal 242-GWe, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, declare as soleresponsible body, that the product Vi

Declaration of conformity for Vitocal 222-GWe, Viessmann Werke GmbH&Co KG, D-35107 Allendorf, declare as soleresponsible body, that the product Vi

AAdjusting sensor temperatures. . . . 143Antifreeze concentration in the brinecircuit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Connections&Brine side . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98&Connection panel . . . . . . . . . . . . . . . . .

HHeat pump start delay. . . . . . . . . . . . . . . . . 152Heating circuit connection. . . . . . . . . . . . 96Heating circuit pump. . . . . . . . . .

RRemote control. . . . . . . . . . . . . . . . . . . . . . . . . . . 172Repair work. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

ApplicabilityApplicable for heat pumps:Brine/water heat pumpVitocal 242-G/222-G, type BWT 106, 108 and 110400 V and 230 VWith the standard equipment f

Electrical connection (230 V versions)*1Connections at the main connection area X60F Control unit power supplyG Instantaneous heating water hea-ter po

qQ Brine circuit pressure switch (ifthe pressure switch is notinstalled, use the jumper pro-vided)qE DHW circulation pumpqR Natural cooling extension

Components to be connected Connection descrip-tionConnect capacitor to full wave soft starter see page 89Only with natural cooling:Connect the require

Pos. Description NumberrQ Cooling circuit flow temperature sensor 1rW Cooling circuit mixer motor 1System version 2One directly connected heating circ

Hydraulic diagramA Primary side interface (see frompage 18)B Min. 500 mm (for hydraulicseparation)1 Compact Energy Tower6 Diaphragm expansion vesselhe

qO Room temperature sensorwP Extension kit for cooling circuitwith mixerwQ Outside temperature sensorwW Heating water buffer cylinder tem-perature sen

Working on the system&When using gas as fuel, also closethe main gas shut-off valve andsafeguard against unauthorisedreopening.&Isolate the sy

Electrical connection (400 V versions)Connections at the main connection area X60F Control unit power connection(230 V)G Instantaneous heating water h

qW Heating circuit pump, direct heat-ing circuitqE DHW circulation pumpqR Natural cooling extension kitqT Central fault message (230 V)qZ Power-OFFqI

Information regarding other connectionsThe primary pump, the secondary pump, the instantaneous heating water hea-ter and the central heating/DHW three

Electrical connection (230 V versions)*1Connections at the main connection area X60F Control unit power supplyG Instantaneous heating water hea-ter po

qQ Brine circuit pressure switch (ifthe pressure switch is notinstalled, use the jumper pro-vided)qW Heating circuit pump, direct heat-ing circuitqE D

Information regarding other connectionsThe primary pump, the secondary pump, the instantaneous heating water hea-ter and the central heating/DHW three

Pos. Description NumberqR Natural cooling extension kit 1wP Extension kit for cooling circuit with mixer 1eP Natural cooling contact humidistat 1eW Th

Hydraulic diagramA Primary side interface (see frompage 18)B Min. 500 mm (for hydraulicseparation)1 Compact Energy Tower6 Diaphragm expansion vesselhe

wP Extension kit for cooling circuitwith mixerwQ Outside temperature sensorwW Heating water buffer cylinder tem-perature sensorwU DHW circulation exte

Electrical connection (400 V versions)Connections at the main connection area X60F Control unit power connection(230 V)G Instantaneous heating water h

Installation instructionsPreparing for installationTransport...

qR Natural cooling extension kitqT Central fault message (230 V)qZ Power-OFFqI KM BUS: Vitotrol 200 remote con-trol (with room temperature sen-sor), s

Information regarding other connectionsThe primary pump, the secondary pump, the instantaneous heating water hea-ter and the central heating/DHW three

Electrical connection (230 V versions)*1Connections at the main connection area X60F Control unit power supplyG Instantaneous heating water hea-ter po

qQ Brine circuit pressure switch (ifthe pressure switch is notinstalled, use the jumper pro-vided)qE DHW circulation pumpqR Natural cooling extension

Information regarding other connectionsThe primary pump, the secondary pump, the instantaneous heating water hea-ter and the central heating/DHW three

Pos. Description NumberwE Solar collectors as requiredwR Collector temperature sensor 1wT Diaphragm expansion vessel for the solar circuit 1wZ Solar c

Hydraulic diagramA Primary side interface (see frompage 18)B Min. 500 mm (for hydraulicseparation)1 Compact Energy Tower6 Diaphragm expansion vesselhe

7 Underfloor heating circuit tem-perature limiter8 Plate-type heat exchanger9 Heating water buffer cylinderqP Underfloor heating circuitqW Heating cir

Electrical connection (400 V versions)Connections at the main connection area X60F Control unit power connection(230 V)G Instantaneous heating water h

qW Heating circuit pump, direct heat-ing circuitqE DHW circulation pumpqR Natural cooling extension kitqT Central fault message (230 V)qZ Power-OFFqI

Control settingsMenu structure overview – Main menu ... 133Menu structure overview – information

Information regarding other connectionsThe primary pump, the secondary pump, the instantaneous heating water hea-ter and the central heating/DHW three

Electrical connection (230 V versions)*1Connections at the main connection area X60F Control unit power supplyG Instantaneous heating water hea-ter po

qQ Brine circuit pressure switch (ifthe pressure switch is notinstalled, use the jumper pro-vided)qW Heating circuit pump, direct heat-ing circuitqE D

Information regarding other connectionsThe primary pump, the secondary pump, the instantaneous heating water hea-ter and the central heating/DHW three

Pos. Description NumberwU DHW circulation extension 1Option solar heating circuit (only with Vitocal 242)wE Solar collectors as requiredwR Collector t

The following table provides an overview of all electrical connecting areas.A Full wave soft starter, 400 V or230 V versionB Junction box with X60 mai

A Clearance from the wall or frontedge of the recess.NotePosition the back of the unit tempora-rily approx. 500 mm from the on-sitedrain connection.1.

3. Pull the upper front panel at itslower edge forward and lift outupwards.4. Release the front top panel.Fitting the water drain (Vitocal 242)NoteTo

4. NoteMin. clearance between the walland the back of the equipmentwhen the drain connection islocated behind the equipment: 15mm, and when the drain

NoteTo prevent damage to the connectingcables with wall clearances of> 80 mm, the connecting cables mustbe provided with strain relief on site.1. F

Internal pump run-on... 160Max. steps; three-way valve ...

1. Remove the front part of the ther-mal insulation.2. Remove the top part of the thermalinsulation.3. Insert the strain relief with insertedcables (l

5. Lead the thermal insulation A ofthe primary inlets and outletsthrough the openings in the top partof the thermal insulation B.Position the top part

2. Suspend control module (with typeplate at the front) over the undonescrews.NoteIf the control module cannot befitted without touching internalcompo

1. Remove the control panel and put iton top of the heat exchanger.2. Remove the crossbar.3. Lift the edge protector and removethe l.h. retaining pane

5. NoteObserve information regarding thebrine connection on page 98.Insert the corrugated pipes of theconnection set for the brine circuit(supplied wi

1.!Please noteDamaged cable insulationcan cause damage to theunit.Route cables so that theycannot touch very hot,vibrating or sharp-edgedcomponents.Ro

3. Fit the control panel. 4. Make all external electrical connec-tions in accordance with theinstructions starting on page 66.Connecting the external

Information regarding the use of room temperature sensors and remotecontrols&If a room temperature sensor is being installed for a heating circuit

Collector temperature sensor (type Pt 500, only for the Vitocal 242)A Terminals in the control panelB Collector temperature sensorSolar collector inst

When using a separate heating circuit pumpTemperature limiter installationinstructionsCentral fault messageA Terminals in the control panelB Acoustic

Room temperature control ... 177Adjusting the heating curve level and slope...

Extension kit for a mixer circuit and/or Vitotrol 200 remotecontrol (via KM BUS)NoteGeneral information regarding the room temperature sensors and rem

Natural cooling with NC-BoxThe NC-Box is a fully assembled unitfor the implementation of the naturalcooling function, subject to versionwith (part no.

Version 1"Hard" shut-off of power supply for compressor and/or instantaneous heatingwater heater and OFF contact to control unit.Power-OFF w

Power-OFF with 230 V power connection (version 1)Instantaneous heating water heaterA No power-OFF in this positionB Control contact ripple controlrece

B Control contact ripple controlreceiver "power-OFF"C ContactorD The air and creepage gap mustexceed 8 mm, since the controlinput is a low v

Main isolator requirements (if necessary)If a main isolator is set, it must isolatethe power circuit with at least 3 mmcontact separation.If no main i

In negotiations with your power sup-ply utility, different feed tariffs for themain power circuits may be offered.The control unit/electronics feedmus

Control unit power supplyA Terminals in the control panelNoteThis supply must never be blockedMax. fuse rating 16 ACompressor power supplyA Terminals

Power supply 400 V~, one tariff&One common power cable with a large cross-section up to the vicinity of theheat pump.&The common power cable c

Control unit power supplyA Terminals in the control panelNoteThis supply must never be blocked.Max. protection 16 A.Compressor power supplyA Terminals

Commissioning/service reportsHydraulic parameter report ... 216Control parameter

230 V~ power supply, various tariffs&Three separate power cables&Selective power-OFF for compressor and instantaneous heating water heaterposs

Compressor power supplyA Terminals at the control moduleRecommended power cable: 3 x 4mm2NoteThe upstream fuses must have Zcharacteristics.Instantaneo

Adapt the cross-section of common power cable to the connected load of theinstantaneous heating water heater and the compressor. The connected load of

Compressor power supplyA Terminals at the control moduleRecommended power cable: 3 x 4mm2NoteThe upstream fuses must have Zcharacteristics.Instantaneo

Over/undervoltage 15 %Phase asymmetry 15 %Switching delay 4 sThe phase monitor shuts off if thesetolerance ranges are exceeded.If the values are withi

Version 1A Over/undervoltage in %B Phase asymmetry in %C Switching delay in sD Contact used in the safety chain(N/O)E Operating display ("Rel&quo

Version 2A Over/undervoltage in %B Switching delay in sC Phase asymmetry in %D Green LEDE Yellow LEDLEDs explained&LED "R" illuminates g

Relay switch contacts for activat-ing signalling equipment or forblocking the heat pump:A Contact used in the safety chain(N/O)Checking the rotating f

1. Fit the retaining bracket provided tothe left side of full wave soft starter.To do this:&Remove cable ties from the leftside of the full wave s

NoteIn accordance with the previously described installation procedure, the heatpump module must already be installed. The heat pump module cannot bei

Please transport the unit in the crateto protect it from damage. The cratecan be dismantled if the amount ofavailable space is limited.Leave the palle

4. DangerThe absence of componentearthing can transfer dan-gerous body currents,should an electrical faultoccur.It is important to connect theearth st

1. Only with model BWT 106 in400 V version:Push the compressor connectioninto pos. K at the control module(see page 22).2. Push the safety chain conne

1. The brine pressure switch is con-nected across terminals X60.11and X60.12 at the top of the controlpanel (see also page 69).If no brine pressure sw

VL Secondary circuit flow RL Secondary circuit return1. Route the corrugated stainlesssteel pipes of the secondary flowand return through both apertur

HR Heating returnHV Heating flowKW Cold waterRL Solar returnVL Solar flowWW DHWZ DHW circulationWe recommend the use of the con-nection panel (accesso

Connection of the Vitocal 242 on the DHW sideFor the DHW connection, observe DIN 1988 and DIN 4753.A Domestic hot waterB DHW circulation pumpC Spring-

A DHWB DHW circulation pumpC Spring-loaded check valveD Hydraulic connection array of theCompact Energy Tower (top view)E Diaphragm expansion vesselF

NoteDesign the heating circuit as a singleline heating circuit or with an overflowvalve (minimum flow rate 700 l/h) andfill via boiler fill & drai

A Primary outletB Primary inlet&The components used must beresistant to the "Tyfocor" heat trans-fer medium (never use galvanisedpipes f

For further information regarding the individual steps, see the page indicatedCommissioning stepsInspection stepsMaintenance steps Page! ! !