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Installation and operating instructions

Fresh water station WHI freshaqua 22

4 Dimensioning and Planning

83514302 ▪ 1/2017-08 ▪ Ext. PAW

13-32

Dimensioning and Planning

The WHI freshaqua is a fresh water station that heats the domestic water according to

the continuous flow heater principle.
The system must fulfil certain requirements for the trouble-free function of the fresh water

station. Take a little time for the planning before assembly.
Due to their construction, the WHI freshaqua modules reduce the precipitation of scale in

the heat exchanger. For systems with a high total domestic water hardness and/or high

temperatures, a water treatment is recommended, in order to prevent scale formation.

WARNING

Risk of scalding from hot water!
Due to the third party circulation, up to 90 °C hot water may run

out at the tapping point in the primary circuit.



No external pump may be installed between the fresh

water station and the buffer tank.



The fresh water station must not be connected to a

heating circuit distributor.

The WHI freshaqua stations in the following table differ in the soldering material used for

the plate heat exchangers.

The choice of the heat exchanger depends on the requirements of the installation

location. Depending on the chemical composition of the water on the installation location,

an appropriate plate heat exchanger must be chosen.

Please observe the following table:

Heat exchanger

with copper soldering

Heat exchanger

with nickel soldering

Maximum chloride content

in the potable water

≤ 80 ppm

≤ 300 ppm

pH value

7.0 - 9.0

No limitation

Conductivity

≤ 500 μS/cm

No limitation

Zinc-galvanised piping

Unsuitable

Suitable

Maximum pressure at 95 °C

17 bars

12 bars

Plate material

1.4401 (AISI 316)

Overview of the WHI freshaqua stations and the integrated heat exchangers:

Fresh water station

-w- Part number

Soldering material

of the heat exchanger

WHI freshaqua 22 #1

40900015012

Copper

WHI freshaqua 22 #2

40900015022

Copper

WHI freshaqua 22 #3

40900019012

Nickel

WHI freshaqua 22 #4

40900019022

Nickel

Содержание WHI freshaqua 22 #1

Страница 1: ...Mounting and operating instructions Fresh water station WHI freshaqua 22 83514302 1 2017 08 ...

Страница 2: ...issuing this conformity declaration lies with the manufacturer The content of the statement described above complies with the relevant harmonisation legislation of the European Union EMC 2014 30 EU LVD 2014 35 EU Standard applied EN 60335 1 Schwendi 17 08 2016 Signed for and on behalf of MAX WEISHAUPT GMBH ppa Dr Schloen Manager research and Development ppa Denkinger Manager Production and Quality...

Страница 3: ... 9 3 4 Technical Data Pumps 11 3 5 PWM input signal solar profile 11 3 6 Hydraulilc performance data 12 4 Dimensioning and Planning 13 4 1 Dimensioning the storage 15 4 2 Circulation mode 16 5 Installation 17 5 1 Assembly 18 5 2 Connection 19 5 3 Controller connection 19 6 Operation 20 7 Commissioning 20 7 1 Filling the primary circuit 21 7 2 Commissioning the controller 22 7 3 Maximum tapped flow...

Страница 4: ...be observed by anyone working on the machine Work on the machine may only be performed by persons that have received the required training or instruction Persons with restricted physical sensory or mental abilities may work on the machine if supervised or instructed by an authorised person Children may not play with the machine 1 2 Warranty and liability Warranty and liability claims for personal ...

Страница 5: ...le materials that can be recycled by standard recycling operations 2 2 Safety instructions The following must be observed during installation and commissioning Relevant local and national regulations Accident prevention regulations of the employers liability insurance association Instructions and safety instructions mentioned in these instructions WARNING Risk of scalding from hot water Due to the...

Страница 6: ...al equalisation of the electrical installation If this is not ensured by the connected pipework than establish a correct potential equalisation connection to the main potential connection 2 3 Safety measures Immediately eliminate safety relevant defects and replace safety relevant components when they have reached the end of their service life due to their construction 2 4 Electrical connection Wh...

Страница 7: ...water supply Temperature sensor on the heating supply Flow meter on the warm domestic water outlet Lockable primary pump Fill and drain valve for venting the heat exchanger and the pump Connections 1 Secondary side hot water outlet 2 Primary side supply from buffer tank 3 Primary side return to buffer tank 4 Secondary side cold water inlet Equipment A Piston valve warm water outlet B Fill and drai...

Страница 8: ...water tap The speed of the highly efficient EC pumps of the latest generation is controlled by a high performance closed loop control always allowing the heating flow rate to be optimal ly set to the current tap capacity The closed loop control receives the necessary information for adjusting the system from a flow rate sensor and extremely fast temperature sensors that detect the smallest tempera...

Страница 9: ...e outlet G female thread Operating data Max admissible pressure primary 6 bars secondary 10 bars Min flow rate 2 l min Operating temperature 2 95 C Max power Qmax 80 kW at Flowprim 75 DHWsec 60 DCWsec 10 Flow rate at Qmax primary 1400 l h secondary 22 l min Operating temperature sensors 25 C to 120 C Equipment Safety valve secondary 10 bars suitable for domestic water Primary pump High efficiency ...

Страница 10: ...d 2 Plates connecting pieces 1 4401 AISI 316 Solder 99 99 pure copper Heat exchanger with nickel soldering WHI freshaqua 22 3 and 4 Plates connecting pieces 1 4401 AISI 316 Solder 99 99 nickel Admissible medium WHI freshaqua 22 1 and 2 primary heating water according to VDI 2035 Ö Norm H 5195 1 secondary domestic water with a max chloride content 80 ppm Admissible medium WHI freshaqua 22 3 and 4 p...

Страница 11: ...ection class IP 44 Max pressure 1 0 MPa 10 bars Max temperature 95 C TF 95 I 1 1 0 04 0 52 A P1 3 70 W Use in WHI freshaqua 22 1 and 3 Prim WHI freshaqua 22 2 and 4 Prim Sec Prim Primary side accumulator circuit Sec Secondary side circulation 3 5 PWM input signal solar profile PWM input signal Pump status 6 Standby 6 8 Hysteresis 9 15 Min speed 16 90 Linear increase in speed from rpm min to rpm ma...

Страница 12: ...reshaqua 22 3 Product description 83514302 1 2017 08 Ext PAW 12 32 3 6 Hydraulilc performance data WHI freshaqua 22 Flow rate l h Pressure drop domestic water side Residual delivery pressure or pressure drop mbars Circulation UPM2 15 75 CIL Heating UPM2 15 75 LowFlow ...

Страница 13: ...ater station and the buffer tank The fresh water station must not be connected to a heating circuit distributor The WHI freshaqua stations in the following table differ in the soldering material used for the plate heat exchangers The choice of the heat exchanger depends on the requirements of the installation location Depending on the chemical composition of the water on the installation location ...

Страница 14: ...8 Ext PAW 14 32 Assembly example Fresh water station WHI feshaqua 22 2 with circulation kit and with optional return distribution In order to guarantee optimum closed loop control where possible no hydraulic pressure drop should occur on the primary side e g from the installation of a mud strainer dirt trap or mixing valve ...

Страница 15: ...t water 50 C 45 C 1 5 litres 45 C 0 9 litres 60 C 50 C 1 2 litres 55 C 1 6 litres 45 C 0 7 litres 70 C 50 C 0 9 litres 55 C 1 0 litres 45 C 0 6 litres 80 C 50 C 0 7 litres 55 C 0 8 litres Calculation example for dimensioning the buffer tank Buffer tank temperature 60 C Required tapped flow rate at the tap 20 l min Domestic hot water temperature set on the controller 45 C How large does the tank ha...

Страница 16: ... has elapsed Temperature dependent operation With this operating mode the circulation is only started if the minimum temperature that can be set on the circulation temperature sensor is not exceeded within the operating period The circulation is switched off after reaching the nominal temperature that can be set or after the set time period has elapsed The operating modes can be combined as desire...

Страница 17: ...IN 1988 NOTICE Material damage The safety valve integrated into the station does not replace the safety equipment of the domestic water connection according to DIN 1988 The safety valve merely protects the station from excess pressures when maintenance is required Fresh water station Service water fitting Drain valve Safety valve Non return valve Pressure reducing valve if necessary Test valve Shu...

Страница 18: ...nteed at all times during operation If tapping points are connected to the same network as the fresh water station in which pressure surges are possible e g flushing valves washing machines or dishwashers we recommend the installation of water hammer dampers near the device causing the pressure surges 1 Place the installation site of the fresh water station near the buffer tank With long connectin...

Страница 19: ...nnection male thread flat sealing Pipe gap from the wall primary 67 mm 5 3 Controller connection WARNING Risk to life and limb due to electric shock Prior to performing electrical work on the controller de energise the system For more information see enclosed installation and operation instructions of the station controller Connect the fresh water station to the power supply system 230 V 50 Hz onl...

Страница 20: ...ion The primary circuit is equipped with a gravity brake in ball valve G in order to prevent undesired gravity circulation The gravity brake must be opened for venting and flushing the system For this purpose turn the ball valve to position 45 The gravity brake is not in operation All ball valves and valves must be opened completely for operating the system position 0 Ball valve with integrated ch...

Страница 21: ...g pressure of approx 1 5 bars is reached Use heating water according to VDI 2035 Ö Norm H 5195 1 3 Attach a hose to fill and drain valve B Actuate fill and drain valve B carefully and allow the air to escape 4 Close fill and drain valve B 5 Close ball valve F by turning it to the 90 position 6 Open ball valve G slowly by turning it to the 45 position 7 Actuate fill and drain valve B carefully and ...

Страница 22: ...ion 7 If you can still hear air noises after that attach a hose to fill and drain valve B Actuate fill and drain valve B carefully when the pump is still running and allow the air to escape 8 If you cannot hear any air noises anymore turn off the pump For this purpose select manual mode H1 in the selection menu of the controller 9 Set the pump to automatic mode A 10 Open the warm domestic water ta...

Страница 23: ...nditions Cold water temperature 10 C Max pressure drop on the domestic water side of the WHI freshaqua 1000 mbars The correlation between the individual variables hot water temperature tapped flow rate and buffer tank temperature is explained and shown on the basis of the following examples such as which effect they have on the transmission power of the fresh water station Example 1 Hot water temp...

Страница 24: ...apped flow rate l min Power kW Hot water temperature 45 C after heating to 60 C and adding cold water 10 C Buffer tank temperature Boundary conditions Cold water temperature 10 C Example 1 Hot water temperature on the controller 60 C Temperature in the buffer tank 70 C WHI freshaqua maximum tapped flow rate 31 l min transmission power 74 kW Example 2 Hot water temperature on the controller 60 C Ma...

Страница 25: ...60 C Primary side The temperature in the buffer tank required on the primary side depends on the hot water temperature as well as the tapping quantity required The temperature in the buffer tank must be at least 5 K above the desired hot water temperature Secondary side The possible tapped flow rate l min at the tap depends on the water temperature set on the controller and the temperature availab...

Страница 26: ...18 l min 44 kW 60 C 45 C 30 l min 30 l min 73 kW 50 C 23 l min 27 l min 64 kW 55 C 17 l min 22 l min 52 kW 70 C 45 C 38 l min 38 l min 92 kW 50 C 33 l min 37 l min 91 kW 55 C 27 l min 34 l min 84 kW 60 C 22 l min 31 l min 74 kW 80 C 45 C 38 l min 38 l min 92 kW 50 C 38 l min 43 l min 105 kW 55 C 35 l min 45 l min 109 kW 60 C 30 l min 42 l min 102 kW at a cold water temperature of 10 C reheating no...

Страница 27: ...n and operating instructions Fresh water station WHI freshaqua 22 9 Spare parts 83514302 1 2017 08 Ext PAW 27 32 9 Spare parts 9 1 Spare parts list WHI freshaqua 22 1 40900015012 and WHI freshaqua 22 3 40900019012 ...

Страница 28: ... Seal 17 x 24 x 2 AFM34 2 40900021107 9 Seal 21 x 30 x 2 1 AFM34 2 40900021117 10 Seal 27 x 38 x 2 1 AFM34 2 40900021137 11 Domestic water controller FC3 8 660346 12 Name plate WHI freshaqua 22 1 40900015157 Name plate WHI freshaqua 22 3 40900019017 Not shown in drawing Thermo handle weishaupt 48002003132 Plug fuse connection cable PWM 48002002627 Plug cable for VFS sensor 650 mm 40900015137 Plug ...

Страница 29: ...allation and operating instructions Fresh water station WHI freshaqua 22 9 Spare parts 83514302 1 2017 08 Ext PAW 29 32 9 2 Spare parts list WHI freshaqua 22 2 40900015022 and WHI freshaqua 22 4 40900019022 ...

Страница 30: ...8 x 2 1 AFM34 2 40900021137 11 Domestic water controller FC3 8 660346 12 Name plate WHI freshaqua 22 2 40900015197 Name plate WHI freshaqua 22 4 40900019027 13 Name plate WHI freshaqua 22 40900015187 14 Circulation pump UPM2 15 75 CIL 40900019342 Not shown in drawing Non return valve DN 15 G Fl x G A with drain 40900015177 Seal 21 x 30 x 2 1 EPDM 90 40900015167 Thermo handle weishaupt 48002003132 ...

Страница 31: ...ther installations Circulation set Revolution speed of circulation pump Return distribution set Miscellaneous Have both circuits been correctly flushed and vented No air sounds in the pump Vented Are all shut off valves and fittings in the cold water line open Open Is there a minimum pressure of 1 5 bars available on the primary side Checked Is there a minimum pressure of 2 5 bars available on the...

Страница 32: ...d dual fuel burners operate reliably Solar systems The stylish flat plate collectors are the ideal complement for any Weishaupt heating system They are suitable for solar water heating and for combined heating support With versions for on roof in roof and flat roof installations solar energy can be utilised on almost any roof multiflam Burners up to 17 000 kW This innovative Weishaupt technology f...

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