product range solex - sundial finland oy · product range solex the solar circuit in a solar...

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dwerkergarantie •5 Years Quality made in Germany

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Product range SolexTechnical data and dimensioning

2We reserve the right to make technical changes without notice! • Printed in Germany • 03/2014

PAW GmbH & Co. KG • D-31789 Hameln • Germany • Phone: +49-5151-9856-0 • Fax: +49-5151-9856-98 • [email protected] • www.paw.eu

SolexMini

SolexMidi / SolexMaxi

SolexMega

Product range Solex

Applications of solar transfer stations Product range Solex

The solar circuit in a solar thermal installation must be filled with a water and propylene glycol mixture to prevent frost damage. The heating installation is normally operated with water. To transfer the heat energy from the solar circuit to the heating circuit a heat exchanger is used. In small systems a smooth pipe heat exchanger integrated in the storage tank transfers the heat energy. With larger collector fields the heat transfer capacity of those heat exchangers is no longer sufficient.In large systems solar transfer stations transfer the collected heat energy from the collectors to the heating water circuit.

The centre piece of those modules is a plate heat exchanger, which allows an efficient heat transfer by means of its cross-flow operation mode.

The operating conditions vary due to fluctuation in heat radiation, buffer temperatures and individual system requirements. To operate the entire system at its optimum you have to set the flow rates at the heat exchanger depending on the individual control target and the current conditions.

For this purpose the Solex modules use high-efficiency pumps, which offer an extremely broad adjustment range. Thus the controller adjusts efficiently the pumps to the current required flow rates.Additionally the used pumps save more than 50% of electrical driven energy compared to conventional asynchronous pumps. Those pumps already meet the energy efficiency guidelines (EuP / ErP READY) of 2015.The controller is delivered preset, mounted and prewired to guarantee an easy adjustment to the real system.

The use of flow rate sensors in the Solex modules allows a power adjusted control, an efficient system monitoring and an integrated heat quantity measurement.

For a safe and quick commissioning, the Solex modules are equipped with pressure relieve valves, ball valves as well as fill and drain valves.

3We reserve the right to make technical changes without notice! • 03/2014 • Printed in GermanyPAW GmbH & Co. KG • D-31789 Hameln • Germany • Phone: +49-5151-9856-0 • Fax: +49-5151-9856-98 • [email protected] • www.paw.eu

150 mbars1000 l/m2

400 mbars500 l/m2

Product range SolexDimensioning

High-Flow system with harp collectors Low-Flow system with meander collectors

Dimensioning of a Solex module

Different collector types with the same size of collector field need very different flow rates for an effective operation without interruption. The hydraulic connection of the collector field as well as the shape of the collector can influence the optimal flow of the solar circuit, too. Corresponding values should be agreed with the manufacturer of the collectors. They can also be found in the technical documents of the collectors.

The solar systems are roughly divided into High-Flow systems and Low-Flow systems. High-Flow systems are operated with a higher flow rate and a small temperature difference between collector inlet and collector outlet. In reality, these systems have less pressure drop than Low-Flow systems. Accordingly, Low-Flow systems work with low flow rates and a higher tempera-ture difference. The Solex transfer stations can be used for High-Flow solar thermal systems as well as for Low-Flow systems.

The values for the specific flow rate given below refer to the no-minal flow rate. Depending on the control target and the basic conditions, the flow rate in the partial-load range is adapted by the controller and can be much smaller than the calculated nominal flow rate.

High-Flow systems have a flow rate of 25 to 40 litre per square metre and hour or 0.42 up to 0.67 litres of collector surface and minute.

Low-Flow systems have a flow rate of 10 to 20 litre per square metre and hour or 0.17 up to 0.33 litres of collector surface and minute.

The total flow rate in a solar thermal system depends on:

• System operation mode (High-Flow/Low-Flow)

• Collector surface

• Performance of the heat exchanger (secondary)

The circulation pump dimensioning depends on:

• Flow rate

• Pressure drop of heat exchanger, collector, piping system

For the selection table of the proper Solex, we assumed a minimum head of ~5 m wc (~50 kPa). If the real collector field (including pipes) has a higher pressure drop, a detailed dimensioning is inevitable.

Selection table solar transfer stations - Solex

Specific flow rate in l/(m² x h)

Collector surface in m2

15 20 25 30 40 50 60 70 80 90/ 100

120 140/ 160

180/ 200

240 280 320 360/ 400

15 Mini Mini Mini Midi Midi Midi Maxi Maxi Maxi Maxi Mega Mega Mega 2x Mega

2x Mega

2x Mega

2x Mega

20 Mini Mini Mini Midi Midi Midi Maxi Maxi Maxi Maxi Mega Mega Mega 2x Mega

2x Mega

2x Mega

2x Mega

25 Mini Mini Mini Midi Midi Maxi Maxi Maxi Maxi Mega Mega Mega 2x Mega

2x Mega

2x Mega

2x Mega

***

30 Mini Mini Mini Midi Midi Maxi Maxi Maxi Mega Mega Mega 2x Mega

2x Mega

2x Mega

*** / /

35 Mini Mini Midi Midi Maxi Maxi Maxi Mega Mega Mega 2x Mega

2x Mega

2x Mega

*** / / /

40 Mini Midi Midi Midi Maxi Maxi Mega Mega Mega Mega 2x Mega

2x Mega

2x Mega

*** / / /

*** precise dimensioning required



Product range SolexMini Basic HZ up to 25 m2 / Premium HZ up to 30 m2 of collector surface

Technical data SolexMini Basic HZup to 25 m2 of collector surface

SolexMini Premium HZup to 30 m2 of collector surface

MaterialsValves and fittings Brass

Gaskets Klingersil / EPDM

Insulation EPP

Check valves BrassHeat exchanger Plates + connecting pieces: 1.4401 (AISI 316)

Solder: 99.99 % copperTechnical dataMax. pressure primary: 6 bars, secondary: 3 bars

Max. operating temperature primary: 120 °C, secondary: 95 °C

DimensionsConnections primary: ¾ " int. thread / secondary: ¾ " int. thread

427 mm680 mm249 mm

Width

Height

Depth

EquipmentHeat exchanger 24 plates (IC8T)

Check valves primary: 2 x 200 mm wc, secondary: 1 x 200 mm wc

Pressure relief valve primary: 6 bars, secondary: 3 barsPressure gauge 0-6 bars, resistant to high temperatures

Measurement of flow rate primary / secondary: FlowCheck,measuring range: 1 - 20 l/min

primary: FlowRotor with Hall sensor,measuring range: 0.5 - 15 l/min

Sensors 1 PT1000 (mounted)2 PT1000 (enclosed)

1 PT1000 (mounted)3 PT1000 (enclosed)

Controller SC3.6 SC4.16

Dimensioning*Specific flow rate Max. flow rate of 750 l/h

15 l/m2h 25 m2 of collector surface






*at approx. 5 m wc residual head

SolexMini Basic HZ (heating installation) SolexMini Premium HZ


Features - OverviewSolexMini Basic / Premium

Airstop

for permanent deaerationof the solar fluid

Heating pressure relief gauge 3 bars

Premium: high-efficiency pump

• with serial number• ErP and EuP READY• up to 50% saving in energy• better controllability• works silent

Premium Solar controller SC4.16

• with temperature controlled charging of the storage tank and heat quantity balancing

• easy PC connection via USB and LAN• connection to the building management system

Pressure relief valveapproved by TÜV (German Technical Inspection Agency), 6 bars

Full metal thermometersto the solar circuit 0-160 °Cto the heating circuit 0-120 °C

Detailed and illustrated instruction manualsfollowing languages are available:

Solar pressure gauge 0-6 bars

Generously dimensioned high-efficiency plate heat exchanger:

• with long thermal length for a low return flow temperature • made of stainless steel

AISI 316• Basic/Premium: 24 plates

Solar fill valve

Connection for expansion tank

¾" ext. thread

Solar drain valve

Thermometer ball valve, ¾":

• in the heating and solar circuit• housing made of brass• spindle can be replaced under pressure• temperature measuring by means of

the spindle in the fluid

Brass check valve, can be opened

Return temperature sensor

Pt1000

Example SolexMini Premium

Basic: Solar controller SC3.6

• with temperature controlled charging of the storage tank and optimum heat quantity balancing

Premium: FlowRotor with Hall sensor and function control:

• for a precise flow rate measurement in the solar circuit

• Measuring range 0.5 - 15 l/min

Basic: FlowCheck

for balancing the flow rates• Measuring range 1 - 20 l/min

Solar drain valve

Basic: standard pump

• with serial number• proven asynchronous technology• works silent



Technical data SolexMidi HZup to 50 m2 of collector surface

SolexMaxi HZup to 100 m2 of collector surface

MaterialsValves and fittings Brass

Gaskets Klingersil / EPDM

Insulation EPP

Check valves BrassHeat exchanger Plates + connecting pieces: 1.4401 (AISI 316)

Solder: 99.99 % copperTechnical dataMax. pressure primary: 6 bars, secondary: 3 bars

Max. operating temperature primary: 120 °C, secondary: 95 °C

DimensionsConnections ¾" int. thread 1" int. thread

Width 674 mm 676 mm

Height 795 mm 828 mm

Depth 298 mm 298 mm

EquipmentHeat exchanger 30 plates (IC 25) 60 plates (IC 25)Check valves prim./sec.: 2 x 200 mm wc prim.: 2 x 200 mm wc

sec.: 1 x 200 mm wcPressure relief valve primary / secondary: 6 bars

Pressure gauge 0-6 bars, resistant to high temperatures

Measurement of flow rate primary / secondary: FlowRotor with Hall Sensor, measuring range: 2-50 l/min

Sensors 3 PT1000 (mounted)3 PT1000 (enclosed)

Controller SC4.16

Dimensioning*Specific flow rate Max. flow rate of 1200 l/h Max. flow rate of 2000 l/h

15 l/m2h 50 m2 of collector surface 100 m2 of collector surface






*at approx. 5 m wc residual head

Product range SolexMidi HZ up to 50 m2 / SolexMaxi HZ up to 100 m2 of collector surface

SolexMidi HZ (heating installation) SolexMaxi HZ


Features - OverviewSolexMidi / SolexMaxi HZ


Drain valve

Flow temperaturesensor Pt1000

rapid temperature measurement

Basic/Premium:Solar controller SC4.16

• with temperature controlled charging of the storage tank and heat quantity balancing

• easy PC connection via USB and LAN• connection to the building management

system

Pressure relief valve

approved by TÜV (German Technical Inspection Agency), 6 bars

Solar pressure gauge 0-6 bars

Solar fill valve


¾" int. thread

Airstop

for permanent deaeration of the solar fluid


• with long thermal length for a low return flow temperature

• made of stainless steel AISI 316• Basic: 30 plates• Premium: 60 plates

Thermometer ball valve, 1":

• in the heating and solar circuit• housing made of brass• spindle can be replaced under pressure• temperature measuring by means of

the spindle in the fluid

Brass check valve, can be opened

High-efficiency pump• with serial number• ErP and EuP READY• up to 50% saving in energy• better controllability• works silent

Thermometer ball valve

with brass check valve, can be opened

Drain valve



FlowRotor with Hall sensor:

for a precise flow rate measurement• Measuring range: 2-50 l/min

Example: SolexMaxi HZ



Product rangeSolexMega HZ (heating installation) up to 200 m2 of collector surface

TECHNICAL DATA SOLEXMEGA HZ - DN 32Materials

Valves and fittings Brass Gaskets EPDM or AFM 34, asbestos-free

Insulation EPPCheck valves BrassHeat exchanger Plates + connecting pieces: 1.4401

Solder: 99.99 % copperTechnical data

Max. pressure primary: 6 barssecondary: 3 bars

Max. operating temperature primary: 120 °Csecondary: 95 °C

EquipmentHeat exchanger 2 x 60 plates, type IC 25 Check valves 2 x 200 mm wc, primary

2 x 200 mm wc, secondaryPressure relief valve 6 bars, for solar thermal systems

3 bars, for heating installations Pressure gauge 0-6 bars, resistant to high temperatures

FlowRotor primary: 2-130 l/minsecondary: 2-130 l/min

Sensors 3 x PT1000-B (mounted),

Controller SC8.24Dimensions

Connections 1½" int. thread Width 710 mm

Height 1649 mmDepth 920 mm

Conditions: Irradiation = 800 W/m²; efficiency ŋ0,05 = 65%

SolexMega HZ - for installations up to 200 m²

SolexMega HZ6097460

Operating mode Collector surface Performance Temperature difference(collector inlet/collector outlet)

15 l/(m²xh) 200 m² 100 kW 33 K

25 l/(m²xh) 160 m² 80 kW 20 K


Features - OverviewSolexMega HZ (heating installation)


Flow temperaturesensor Pt1000

rapid temperature measurement

Solar controller SC8.24• for temperature-controlled charging of the storage tank and heat quantity balancing• easy PC connection via USB and LAN• optionally: connection to the building management system

Solar pressure gauge

0-6 bars


1" male thread

Airstop

for permanent deaeration of the heat transfer medium and for controlled venting of the installation


• with long thermal length for a low return flow temperature

• made of stainless steel AISI 316• 2 x 60 plates• additionally insulated heat exchanger

to increase the energy efficiency

High-efficiency pumps• with serial number• ErP and EuP READY• up to 50% saving in energy• better controllability• works silent

Ball valves

with integrated non return valve and fill and drain valve

Drain valve



FlowRotor with Hall sensor:

for a precise flow rate measurement• Measuring range: 2-130 l/min

Example SolexMega HZ

Compact design insulation with optimised function

• made of durable elastic EPP• insulating elements can be removed individually



Product rangeSolexMega-Kaskade HZ up to 400 m2 of collector surface

TECHNICAL DATA SOLEXMEGA-KASKADE - DN 50 Materials

Valves and fittings Brass Gaskets EPDM or AFM 34, asbestos-free

Insulation EPP

Check valves BrassHeat exchanger Plates + connecting pieces: 1.4401

Solder: 99.99 % copperTechnical data

Max. pressure primary: 6 barssecondary: 3 bars

Max. operating temperature primary: 120 °Csecondary: 95 °C

EquipmentHeat exchanger 4 x 60 plates, type IC 25 Check valves 4 x 200 mm wc, primary

4 x 200 mm wc, secondaryPressure relief valve 6 bars, for solar thermal systems

3 bars, for heating installations Pressure gauge 0-6 bars, resistant to high temperatures

FlowRotor 4 x 2-130 l/min Sensors 8 x PT1000-B (mounted),

Controller SC8.24Dimensions

Connections 2 " ext. thread / flange DN 50 - PN 6 Width 1420 mm

Height 1890 mm Depth 920 mm

Conditions: Irradiation = 800 W/m²; efficiency ŋ0,05 = 65%

SolexMega-Kaskade HZ - for installations up to 400 m²

SolexMega-Kaskade6097460

Operating mode Collector surface Performance Temperature difference(collector inlet/collector outlet)

15 l/(m²xh) 400 m² 200 kW 33 K

25 l/(m²xh) 320 m² 160 kW 20 K


Features - OverviewSolexMega-Kaskade HZ

Simple and quick installation due to premounted pipe set

Compact design insulation with optimised function

• insulating elements can be removed individually

For a double cascade only one controller is necessary!

Simple and quick installation of the floor-standing station.

Adjustable rack legs to compensate for unevenness of the floor.

Module with controller can be placed on the right or left side



Product range SolexFunction overview controller - SC3.6

Controller SC3.6 for solar transfer stations:for SolexMini Basic HZ up to 20 m2 of collector surface

The solar controller SC3.6 is completely mounted and preset so that only the collector field sensor and the storage tank sensor must be installed and connected. The graphically animated LCD display gives a quick and simple overview on the solar installation and the operating conditions. Icons facilitate the programming of the controller.The controller comprises 11 preset systems and can be used in solar installations with up to two collector fields or up to two domestic hot water or buffer storage tanks.It is possible to use a solar transfer station with an external heat exchanger and a tank for potable water or a buffer tank with two loading areas. The third relay output and a potential-free switch output for safety extra-low voltage allow additionally individual control and alarm functions. Not only temperature measurement, but also heat quantity balancing based on flow calculation is possible by means of the sensors. With demanding requirements a pulse sensor or PAW FlowRotor can be connected for heat quantity balancing.

Upon request a detailed system monitoring as well as data storage via Internet are available as an option.

OVERVIEW CONTROLLER FUNCTIONS

Controller SC3.6

Display graphically animated LCD display

Operation 4 pushbuttons

Relay outputs 2 x 230 V, semiconductor relays 1 x potential-free switch output 2 x PWM signal for speed control

Sensor inputs 5 x PT1000

Flow rate sensor(impulse), FlowRotor

yes

Heat quantity(pulse sensor, calculation)

yes

Back-up heating yes

Alarm output yes

Circulation(depending on time / temperature)

yes

Holiday (storage tank recooling) yes

Solid fuel boiler yes

Reduction of stagnation yes

Active cooling yes

Quick tank charging yes

Thermostat yes

Interval / tube collector yes

Internal heat exchanger, pump logic

For these systems you need an additional temperature sensor item no. E13170 (on the right):

External heat exchanger, pump logic

2 collector fields, internalheat exchanger, pump logic

Internal heat exchanger, pump logic, return temperature maintenance

Internal heat exchanger, zone charging, valve logic

2 storage tanks, internal heat exchanger, valve logic

Storage tank and swimming pool, stand-alone operation of the external heat exchanger, pump logic

Storage tank and swimming pool, stand-alone operation of the external heat exchanger, valve logic

Preset systems:


Product range SolexFunction overview controller - SC4.16 / SC8.24

Equipment Item no.

LAN modulefor remote control and system monitoringincl. FTP download access for PC and firmware (WIN XP / WIN 7) 1398882

Modbus serverfor connection of SC4.16 to the building technologyincl. 5 m bus cable and external power supply 1398889

Temperature sensor Pt1000 • Measuring range: -50 °C to + 180 °C• Connection: 1.5 m of silicone cable• Dimensions: d = 6 mm E13170

SC4.16 - Technical data SC8.24 - Technical data4 outputs (230 V) 3 x semiconductor, speed control for

conventional pumps8 outputs (230 V) 4 x semiconductor, speed control for

conventional pumps

1 x relay (normally open contact) 4 x relay (normally open contact)

4 outputs (10 V) 4 x 0-10 V / PWM (1.9 kHz), speed control for high-efficiency pumps (mode of operation can be freely selected for each output)

4 outputs (10 V) 4 x 0-10 V / PWM (1.9 kHz), speed control for high-efficiency pumps (mode of operation can be freely selected for each output)

8 inputs (Pt1000) 8 x Pt1000, temperature measurement by a resistance probe

8 inputs (Pt1000) 8 x Pt1000, temperature measurement by a resistance probe

8 analogue inputs(4 combined inputs T/V, T/P)

Temperature / pressure orflow rate sensorsChannel A: 0-5 VChannel B: impulse/0-5 V

8 analogue inputs(4 combined inputs T/V)

Temperature /flow rate sensorsChannel A: 0-5 VChannel B: impulse/0-5 V

8 analogue inputs(4 combined inputs T/P)

Temperature / pressure sensorsChannel A: 0-5 VChannel B: 0-5 V

Controller SC4.16 for solar transfer stations:for SolexMini Premium HZ up to 30 m2 of collector surfacefor SolexMidi HZ up to 50 m2 of collector surfacefor SolexMaxi HZ up to 100 m2 of collector surface

Controller SC8.24 for solar transfer stations:for SolexMega HZ up to 200 m2 of collector surfacefor SolexMega-Kaskade HZ up to 400 m2 of collector surface

The especially for solar transfer stations designed PAW controllers SC4.16 / SC8.24 offer the patented method for an exergy-optimised management of storage tanks. It is possible to charge up to 3 storage tanks via an external heat exchanger.A multitude of integrated sensors allows an effective system monitoring.The controller comprises an integrated event-driven data logger and USB interface. A LAN module for data transmission can be upgraded.The package also includes free software for programming and visualizing the controller.

Charge at the top without return switching Charge at the top with return switching3 storage tanks / 3-way

Control concepts solar controllers SC4.16 / SC8.24



Product range SolexOrder data

Illustration Item Item no.

SolexMini Basic HZprimary: Wilo-Star-ST 15/6 ECO-3, 3-speedsecondary: Wilo-Star-ST 15/6 ECO-3, 3-speed

SolexMini Basic HZ 6091803WS

Accessories SolexMini Basic HZ

Complete set for heat quantity measurementfor SolexMini BasicComplete set for heat quantity measurement. Consists of a flowmeter QN = 1.5 with impulse output 1 litres/impulse. Installation length 110 mm, ¾" ext. thread, flat-sealing, with thread connections for ½" ext. thread. For installation in the secondary circuit. Cannot be calibrated. 2 x clip sensor d = 18 mm.Can be used in solar systems with water and water-glycol-mixtures.

Complete set for heat quantity measurement for SolexMini Basic 131931

SolexMini Premium HZprimary: Grundfos Solar PM2 15-145, high-efficiency pumpsecondary: Grundfos Solar PM2 15-65, high-efficiency pump

SolexMini Premium HZ 6091805GH

SolexMidi HZprimary: Grundfos Solar PM2 15-145secondary: Grundfos Solar PM2 15-65

SolexMidi HZ 6095730

Accessories SolexMini Premium HZ / SolexMidi HZ

UV2 two-way valve with actuator - DN 20for connecting and disconnecting single storage tanks, DN 20, ¾" internal thread, setting time 90°: 30 sec, Kvs value = 41

UV2 two-way valve with actuator - DN 20 563532

UV3 switch valve with actuator - DN 20to switch between different storage tanks, DN 20, ¾" internal thread, setting time 90°: 18 sec, Kvs value = 7

UV3 switch valve with actuator - DN 20 563533


Product range SolexOrder data

Illustration Item Item no.

SolexMaxi HZprimary: Grundfos Solar PML 15-145secondary: Grundfos UPM2 25-75

SolexMaxi HZ 6096760

Accessories SolexMaxi HZ

UV2 two-way valve with actuator - DN 25for connecting and disconnecting single storage tanks, DN 25,1" internal thread, setting time 90°: 30 sec, Kvs value = 68


UV3 switch valve with actuator - DN 25to switch between different storage tanks, DN 25, 1" internal thread, setting time 90°: 18 sec, Kvs value = 11

UV3 switch valve with actuator - DN 25 563543

SolexMega HZ DN 32primary: Grundfos UPM XL 25-125, high-efficiency pump, PWM-Csecondary: Grundfos UPML 25-105, high-efficiency pump, PWM-C

SolexMega HZ 6097760

Accessories SolexMega HZ

UV2 two-way valve with actuator - DN 32for connecting and disconnecting single storage tanks, DN 32, 1¼" internal thread, setting time for 90°: 30 sec.


3-way switch valve with actuator - DN 40to switch between different storage tanks, DN 40, 1½" internal thread,setting time 90°: 35 sec, Kvs value = 35

3-way switch valve with actuator - DN 40 6404242

SolexMega-Kaskade HZ DN 50primary: Grundfos UPM XL 25-125, high-efficiency pump, PWM-Csecondary: Grundfos UPML 25-105, high-efficiency pump, PWM-C

SolexMega-Kaskade HZ 6098860

Accessories SolexMega-Kaskade HZ

3-way switch valve with actuator - DN 50to switch between different storage tanks, DN 50, 2" internal thread, setting time 90°: 35 sec, Kvs value = 40

3-way switch valve with actuator - DN 50 6404244

PAW GmbH & Co.KG Böcklerstraße 11D-31789 HAMELN GERMANY

+49-5151-9856-0 +49-5151-9856-98 [email protected] www.paw.eu Ve

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product range solex - sundial finland oy · product range solex the solar circuit in a solar...

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