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Manual - Solar hot water systems 0020009607_02

Immersion heater

The auroSTOR solar cylinders are equipped with an 
additional immersion heater of 3 kW, including the 
operating thermostat and energy cut-off device.The 
immersion heater is situated behind the front plate. It is 
designed for use in unvented cylinders and includes a 
thermostat control and thermal cut out for over heat 
protection.

Note:
In the event of a replacement, only the right 
immersion heater equipped with a thermal cut 
out for overheating protection may be used.

Secondary return

The water control pack has a connection for a secondary 
return.
•  Remove the 3/4“ dummy plug (BSP thread) from the 

water control pack.

•  Connect a WRAS-approved circulating pump, which 

contains a non-return valve, to the water control pack 
(see Fig. 5.1).

•  Establish the connection to the secondary return.

5.1.2 

Technical data of the auroSTOR solar cylinder

Entry

Unit 

VIH S GB 200 S 

VIH S GB 250 S 

VIH S GB 300 S 

Cylinder:

Size

l 200 

250 

300 

Maximum water supply pressure

bar 

10 

Operating pressure 

bar 

3.5 

Pressure limiting valve

bar 

3.5 

Expansion relief valve

bar 

6.0 

Hot water expansion vessel admission pressure

bar 4.0 

Temperature and pressure relief valve

°C/bar 

95 / 7.0 

Net weight

kg 

39 

44 

49 

Weight (full)

kg 

245 

310 

340 

Height mm 

1499 

1789 

2109 

Cylinder connections:

Cold water supply

22 mm pressure pipe

Hot water connection 

22 mm pressure pipe 

Pressure-controlled cold water outlet

22 mm pressure pipe  

Secondary return

Inches

G 3/4

Flow (boiler/solar circuit)

22 mm pressure pipe

Return (boiler/solar circuit)

22 mm pressure pipe

Electrical connections:

3 kW immersion heater (according to ENBS 60335)

230/240 V, 50 Hz 

Length of the immersion heater

mm 

430 

Motorised 2 port valve

230/240 V, 50 Hz 

Cylinder thermostat

230/240 V, 50 Hz 

Thermal cut out for solar pump

230/240 V, 50 Hz 

Heating coil:

Heat loss

kW/24 h 

1.9

2.1

2.4

Heat up time (boiler part)

mins 

21

26

30

Recovery (boiler part)

mins 

13

16

21

Table 5.4 Technical data of the auroSTOR solar cylinder

Note!
The heat-up time is based on a primary flow 
rate of 9 l/min at 80 °C.
Temperature rise from 15 °C to 65 °C

Installation 5

NOTE 
The water control group used is the same as on our uniSTOR  
cylinders and has a connection that can be used for secondary  
circulation on those cylinders, it may also be used for the  
connection of a legionella circulation pump connection. 
In solar systems secondary circulation is not recommended as it  
will waste energy and reduce solar gains. as it heats the cold store  
area but of course can be used for the connection of a legionella 
circulation pump. 
 
 

                                                                                                                                                             .

Summary of Contents for Solar System and auroSTOR unvented solar...

Page 1: ...For the installer owner Start up maintenance and troubleshooting manual notes for the operator Solar System and auroSTOR unvented solar cylinder Solar hot water systems GB...

Page 2: ...the solar circuit pipes 35 5 3 4 Connection of the collectors to the solar pump unit 35 5 3 5 Bleeding of the solar circuit 36 5 4 Installation of the reheating circuit piping 36 5 5 Installation of t...

Page 3: ...R solar cylinder The symbols used in the manual are explained below d Danger Immediate risk of serious injury or death e Danger Danger of death from electric shock e Danger Risk of burns or scalding a...

Page 4: ...national regulations and must be in stalled to suit site conditions Observe all national regulations including Working at Heights Regulations 2005 Health and Safety at Work Act 1974 Electricity at Wor...

Page 5: ...collector covered d Danger Risk of being burned or scalded by hot solar fluid or components Fill and flush the solar system when the collectors are cold Cover the collectors while doing so Danger Risk...

Page 6: ...rating and installation instructions as well as all other applica ble documents and also compliance with the inspection and maintenance requirements a Caution Improper use of any kind is prohibited Yo...

Page 7: ...torised 2 port valve supplied together with the solar cylinder 4 Immersion heater 5 230 V motorised 2 port valve 6 auroTHERM collector 7 Solar pump unit 8 Protection vessel 9 Solar expansion vessel 10...

Page 8: ...third of the cylinder can be controlled by the VRS 560 or by a separate hot water programmer d Danger Risk of being scalded by hot water to provide effective protection against scalding install a ther...

Page 9: ...usive VTK 570 sho wing direction of flow Key 1 Thermal insulation 2 Receiving tank 3 Supply or return connection 4 Temperature sensor pocket 5 Vacuum tubes 6 Thermal baffle plate 7 CPC mirror 8 U tube...

Page 10: ...orption 95 1 0 Solar sensor sleeve mm 6 CE label 0036 Shutdown temperature according to prEN 12975 2 c 1 m s in the glass tube C 250 Shutdown temperature according to prEN 12975 2 c 1 m s at the colle...

Page 11: ...K Efficiency Fig 4 4 Efficiency of auroTHERM collector with radiation ener gy content of 800 W m2 Pressure loss mbar Flow rate l min VTK 1140 VTK 570 0 0 20 40 60 80 100 120 0 25 0 5 0 75 1 1 25 1 5...

Page 12: ...off line between the expansion relief valve and collection tank The size of the solar expansion vessel is based on the collector volume and the expansion volume of the solar system The expansion vess...

Page 13: ...the pump is interrupted at cylinder temperatures higher than 90 C 4 5 Flow rate meter 0 5 1 2 3 0 5 1 2 3 4 5 6 4 5 6 L min L min 1 1 l min 1 2 Fig 4 11 Flow rate meter 0 6 l min The flow rate meter...

Page 14: ...at exchanger reheating circuit 3 7 VIH S GB 250 S heat exchanger reheating circuit 3 7 VIH S GB 300 S heat exchanger reheating circuit 3 7 Solar pump unit 0 9 auroTHERM exclusive VTK 570 0 8 auroTHERM...

Page 15: ...he fire conditions Polluted fire water must be disposed of according to local official regulations 6 Measures to be taken if substances are released accidentally 6 1 Individual related measures No par...

Page 16: ...ividual components 12 3 Persistence and biodegradability information on elimination OECD 301 A test method new version Analysis method DOC acceptance Degree of elimination 70 28 d Assessment easily bi...

Page 17: ...perature differences not absolute temperature values are important for the operation of solar systems That is why solar systems are controlled by what is referred to as temperature difference controll...

Page 18: ...central heating override and the time control function of an additional circulation pump For wiring refer to Section 5 8 Electrical installation and the operating and installation manual of the VRT 36...

Page 19: ...VFK fixing sets auroSTOR solar cylinders VIH S GB 200 S VIH S GB 250 S VIH S GB 300 S Item no 307206 307207 307208 Safety group with tundish 1 1 1 Motorised 2 port valve for regulation of reheating c...

Page 20: ...Sp 2 temperature sensor immersion pocket 12 Adjustable feet 13 Return solar circuit 14 Supply solar circuit 15 Return gas fired wall hung boiler 16 Supply gas fired wall hung boiler 17 Immersion heat...

Page 21: ...maximum solar gains from your system If other controls are utilised then the VRS 560 2 can be employed as a solar only controller and wired to work with your chosen hot water control The temperature s...

Page 22: ...relief valve C bar 95 7 0 Net weight kg 39 44 49 Weight full kg 245 310 340 Height mm 1499 1789 2109 Cylinder connections Cold water supply 22 mm pressure pipe Hot water connection 22 mm pressure pipe...

Page 23: ...try to system Flow out litres min of the system 10 10 0 Fig 5 5 auroSTOR hot water flow rates at 60 C Static operating pressure of the cold water supply The displayed flow rates apply to installations...

Page 24: ...failure of the domestic water thermostat 5 1 6 Safety instructions and regulations This product has been checked for adherence to the building regulations for unvented hot water cylinder systems It m...

Page 25: ...5 1 9 Transport A cylinder carrier handle is supplied to make the transport to the installation site easier 1 Fig 5 7 Fastening the cylinder carrier handle Fasten the carrier handle 1 to the hot water...

Page 26: ...mperature and pressure relief valve 3 Immersion heater 4 Solar circuit flow Cylinder type A B C d A F g h R VIH S GB 200 S 1468 1499 454 384 314 589 1118 813 953 VIH S GB 250 S 1758 1789 454 384 314 5...

Page 27: ...3 230 V motorised 2 port valve supplied with the solar cylinder 4 Immersion heater 5 230 V motorised 2 port valve 6 auroTHERM collector 7 Solar pump unit 8 Protection vessel 9 Solar expansion vessel 1...

Page 28: ...lation of a motorised 2 port valve in the pipes of the solar system is not allowed since the safety devices in the solar circuit could be overridden by it 5 3 2 Material a Caution Risk of damage becau...

Page 29: ...ers may be necessary for relatively large distances between the boiler and the cylinder Since all wall mounted Vaillant boilers except ecoMAX pro with open ventilation have an installed circulating pu...

Page 30: ...xed with 10 l min cold water of 10 C if the measured static cold mains water pressure is 2 bar and the available flow rate 30 l min The solar cylinder operates satisfactorily at a mains water pressure...

Page 31: ...te In areas with high water pressure 4 bar or more a bath or shower mixer valve can also be connected to the pressure controlled cold water connection 4 Fig 5 16 of the water control pack to ensure th...

Page 32: ...risk of anyone coming in contact with hot water A suitable point is for example under a fixed grating above the trap of a trapped gully Low discharge pipes for example up to 100 mm above external surf...

Page 33: ...arth the solar cylinder for potential equalisation 5 8 1 Immersion heater The auroSTOR VIH S GB 200 300 S solar cylinders have been equipped with an immersion heater by the manufacturer 1 2 4 5 3 230...

Page 34: ...rsion heater You can find a wiring sheme on the inside of the cylinder cover 5 8 3 Combination options of the control components Boiler used eBUS capable boiler such as the Vaillant ecoTEC or a boiler...

Page 35: ...mum temperature if you use one of the wiring schemes 2 or 4 1 2 3 N L 1 7 2 10 3 To wiring box 1 2 3 1 Fig 5 21 Electrical connection of the cylinder thermostat Wiring of the control components Wiring...

Page 36: ...n the immersion sleeve for the bottom cylinder area Connect this temperature sensor to terminal SP 2 in the auroMATIC 560 solar control Attach the temperature sensor for the gain 2 to the return pipe...

Page 37: ...s of an additionally protected terminal strip Establish the connections to the mains supply h Note Programme the hot water channel of the Vaillant eBUS controller to constant Program me the auroMATIC...

Page 38: ...th Blue Brown Grey Orange Earth Blue Brown Grey Orange Hot Water 2 Port Valve VR 65 DHW add terminal strip LEG BYP Central Heating 2 Port Valve VR 65 CH auroSTOR cylinder 3 amp fused supply Boiler ter...

Page 39: ...o terminal SP 2 in the auroMATIC 560 solar control Attach the temperature sensor for the gain 2 to the return pipe of the solar circuit nearby the solar cylinder Connect this temperature sensor to the...

Page 40: ...2 Port Valve Central Heating Programmer 230 V 230 V 230 V LP UV 1 LEG BYP VRS 560 solar control 230 V EP Coll NTC auroSTOR additional terminal strip auroSTOR cylinder TCO collector pump additional ter...

Page 41: ...in the auroMATIC 560 solar control Push a VR 10 temperature sensor 3 in the immersion sleeve for the bottom cylinder area Connect this temperature sensor to terminal SP 2 in the auroMATIC 560 solar co...

Page 42: ...rogrammer to provide hot water when required by the cus tomer Consider carefully when the solar system might be running and try to time to HW pro grammer to run when there is unlikely to be any solar...

Page 43: ...ctor Pump Hot Water 2 Port Valve 3 amp fused supply 230 V any Vaillant boiler Central Heating 2 Port Valve Central Heating Programmer 230 V TCO collector pump VRS 560 solar control TCO and cyl thermos...

Page 44: ...Connect this temperature sensor to terminal SP 2 in the auroMATIC 560 solar control Attach the temperature sensor for the gain 2 to the return pipe of the solar circuit nearby the solar cylinder Conn...

Page 45: ...mmer Boiler Terminal Strip 230 V LP UV 1 additional terminal strip LEG BYP not used to 10 way wiring box NOT separate fused spur Central Heating 2 Port Valve 230 V Hot Water 2 Port Valve auroSTOR cyli...

Page 46: ...nal SP 1 in the auroMATIC 560 solar control Push a VR 10 temperature sensor 3 in the immersion sleeve for the bottom cylinder area Connect this temperature sensor to terminal SP 2 in the auroMATIC 560...

Page 47: ...programmer to provide hot water when required by the cus tomer Consider carefully when the solar system might be running and try to time to HW pro grammer to run when there is unlikely to be any solar...

Page 48: ...grammer Heating Pump if not in boiler 230 V Collector Pump additional terminal strip LEG BYP TCO collector pump EP additional terminal strip auroSTOR cylinder Coll NTC auroSTOR TCO and cyl thermostat...

Page 49: ...when using the Vaillant filling pump It is not permitted to use manual pumps for filling Expansion vessel admission pressure During the start up the gas side admission pressure pv of the expansion ve...

Page 50: ...d on the display 2 Table 6 1 and 6 2 provide reference values for possible pump speeds depending on the collector connection and pipe length and cross section If you use auroMATIC 560 solar control th...

Page 51: ...programming the flow rate on the solar control refer to Section 6 1 Setting system parameters of the auroMATIC 560 operating and installation manual 6 4 Filling the hot water secondary circuit a Cauti...

Page 52: ...cylinder 2 Fig 6 4 and immersion heater 1 Fig 6 4 to the middle position about 45 C for start up and to achieve maximum energy efficiency Start up the boiler refer to Section 6 7 until the solar cyli...

Page 53: ...owner that the immersion heater is intended as standby device for water heating and should not be used simultaneously with the boiler to heat up the water in the solar cylinder Tell the owner that the...

Page 54: ...Annually Secondary return reheating Check the circulation pump Annually Check the timer time programme settings Annually Reheating does it deliver the desired deactivation temperature Annually Solar...

Page 55: ...o max speed or unblock the rotor insert a screwdriver in the notch and turn it by hand 5 Pump dirty Dismantle the pump and clean it Close the flow rate meter and pump ball valve 6 Pump defective Repla...

Page 56: ...imiting valve and replace it if necessary Pressure limiting valve defective Replace the pressure limiting valve Blockage in the system Unblock the blockage and replace any blocked parts Check the syst...

Page 57: ...ing up Dirt on the valve seat of the expansion relief valve Check the expansion relief valve and reset it manually Pressure limiting valve defective Switch off the boiler and immersion heater and chec...

Page 58: ...ating system How to control the solar system is described in the manuals for each controller h Note In the event of leaks in the water pipework close the cold water stop valve at the cylinder immediat...

Page 59: ...You can clean the exterior of the solar cylinder with a damp cloth and a little soap a Caution Risk of damage Do not use any abrasives or solvents since they could damage the exterior or the connectio...

Page 60: ...set properly on the controller approx 60 C recommended Check the hot water thermostat mixer setting approx 60 C recommended If the settings are correct the cylinder maybe calcified In this case notif...

Page 61: ...ts Stuffing boxes at stop valve and fill vent valve checked for leaks retighten union nuts if necessary Temperature and pressure relief valve checked Stop valve for reheating source installed normally...

Page 62: ...ce designation Serial number Boiler system type Open Closed Installation location of pressure limiting valve System values Hot water temperature at the nearest tap C Achievable maximum cylinder temper...

Page 63: ...P1 min see installation manual of solar control C Switch on temperature difference Kelvin Switch off temperature difference Kelvin Other settings Important activated functions Name of the installer in...

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Page 65: ...Manual Solar hot water systems 0020009607_02 72 11 Start up protocol...

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