Heating with air and geothermal heat - Viessmann

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IntroductionSimple principle, great resultA heat pump works in a similar way to a fridge – simply the other way round.VITOCAL 300In a fridge, heat is transferred from theinside to the outside. With a heat pump,this happens exactly the other way round.Heat from the air or the ground is transferredinto the living space via the heating system.Vapour from a refrigerant is compressed toincrease the temperature, to make it highenough for central heating and DHW heating.In this process, the Vitocal 350-G reachesup to 72 °C; the Vitocal 350-A up to 65 °C.These heat pumps can therefore also beused for modernisation as they can provide asufficiently high flow temperature for centralheating with radiators.Highly efficient scroll compressorThe compression process is vital for theefficiency of a heat pump. For this, Viessmannuses a Compliant scroll compressor. Itis characterised by quiet operation, lowvibrations, low maintenance and an extremelylong service life.To generate heat, for example, heat isextracted from the ambient air and used toevaporate a refrigerant that boils at lowHeat pumptemperature. The gas created is compressedby the scroll compressor, which causes it toheat up. The gas heated in this way transfersits heat via the condenser to the heatingwater or DHW heating system, and therebycondenses again. Finally, the refrigerant,which is still under pressure, is expandedin an expansion valve, and the circuitbegins again.A heat pump can make use of thefollowing energy sources:• Air – practically unlimited availability;lowest investment costs• Ground – via geothermal collector orgeothermal probe; very efficient• Water – extremely efficient; observewater quality• Waste heat – subject to availability, volumeand temperature level of the waste heatThe best heat source for each individual casedepends on local conditions and the actualheat demand.Seasonal performance factorThe coefficient of performance (COP) isthe ratio of the heat transfer to the powerconsumption. The seasonal performancefactor is the average of all COPs occurringin a year.Compression processThe coefficient of performance is used tocompare heat pumps with regard to efficiency,yet only applies from a particular operatingpoint under defined temperature conditions.55 °CGroundtemperature all year round between 5 and 18 °C (at 2 m depth)Getting hotter towards the centre – from an initialtemperature of between 5 and 18 °C, a flow temperatureof up to 72 °C is achieved.For planning (for example, to be able tospecify the consumption costs arising fromusing a heat pump), it is necessary to considerthe heat pump operation over the wholeyear. For this, the heat volume transferredover the year is given in relation to the overallelectrical power drawn by the heat pumpsystem over the same period. This includesthe amounts of power used by pumps, controlunits, etc. The result is given as the seasonalperformance factor.
8/9Ground source(collector)Ground source(probe)1 2 3 1 2 3Ground source(ice store)5Air source411 2 3Ground source (groundwater)1 2 312345Vitocal heat pumpDHW cylinderHeating water buffer cylinderIce storeSolar/air absorber
Page 5: 4/5About this brochureHeat pumps fr
Page 14: Product rangeHeat pumps1.5 to 2000
Page 17 and 18: 16/17VITOCAL 350-GHeat pump with a
Page 19 and 20: 18/19Two-stage Vitocal 350-G (maste
Page 21 and 22: 20/21VITOCAL 343-GVITOCAL 333-G NCV
Page 23: 22/23The compact heat pumps Vitocal
Page 28 and 29: Heat pumpsVitocal 300-GEHPA quality
Page 30 and 31: Heat pumpsVitocal 300-G ProEasy-to-
Page 32 and 33: Heat pumps Vitocal 242-GVitocal 222
Page 34 and 35: Heat pumpsVitocal 242-GVitocal 222-
Page 36 and 37: Heat pumps Vitocal 200-G
Page 38 and 39: Heat pumps Vitocal 200-GTwo heating
Page 41 and 42: Heat pumps40/41Cooling with heat pu
Page 43 and 44: Active coolingAC-Box42/43The AC-Box
Page 45 and 46: 44/45VITOCAL 350-AThanks to high fl
Page 47 and 48: 46/47Impressive qualities: high ope
Page 49 and 50: 48/49VITOCAL 300-AWith modulating a
Page 51 and 52: 50/51The RCD system, the digital sc
Page 53 and 54: 52/53VITOCAL 242-SVITOCAL 222-SComp
Page 55 and 56: 54/55Vitocal 242-S split air source
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M56/57VITOCAL 200-SThe affordable a
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58/59Vitocal 200-S split air source
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60/61Two thirds less fuel oilInitia
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62/63The compact DHW heat pump, Vit
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64/65VITOVENT 300-FVITOVENT 300The
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66/67Vitovent 300-F domestic ventil
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68/69The Vitovent 300 provides a co
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70/71Vitocal 343-G brine/water heat
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72/73Vitocal 300-G single stage bri
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74/75Vitocal 242-G brine/water heat
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76/77Vitocal 350-A air/water heat p
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78/79Vitocal 160-A DHW heat pumpOut
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System technologyDomestic hot water
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System technologyControl convenienc
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System technologyData communication
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Service for everyaspect of heatingV
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Contacts andfurther informationVies
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The comprehensive Viessmann product
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The comprehensive Viessmann product
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The company
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The Viessmann GroupD-35107 Allendor
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Heating with air and geothermal heat - Viessmann

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