back to top

back to top

• Higher energy absorption than conventional solar storage tanks
• High extraction volume
• Optimum heat transfer
• No water evaporation
• Extremely low heat losses due to the high thermal insulating hard foam core
• Supply during night time without additional heating from the central-heating boiler
• Easy to transport
• Easy to install
• Ready to be used - no insulation and connection work necessary
  
  

Operation
The inside of the glass vacuum tubes is coated with a stable layer of aluminium nitride, which act as the absorber surface of the system that converts sunlight into heat. The aluminium nitride ensures high sunlight absorbance (>92% of incoming radiation) and very low heat emission level (<6%). Heat loses are prevented, even at low ambient temperature, since the absorber layer is located on the inside of the evacuated glass tube. For the same reason, the aluminium nitrite coating cannot be damaged. Behind the tubes, a highly reflective CPC mirror is located that increases the performance of the system by guiding the Sun's radiation, from all directions, onto the absorber. This achieves optimum radiation collection even when sunlight emission angles are not favourable.

Advantages

• High performance:
  • Very low heat losses which means high efficiency even at low temperatures
  • Very high radiation absorbance (>92%)
• The vacuum tubes are completely closed and not connected to the collector by means of glass-to-metal joints:
  • Trouble free operation
  • Long lifespan
  • Replacement of a tube without shutting down or draining the system
• The vacuum tubes are ready assembled
• Easy to install

4. Pump groups and accessories

A. Pump group solar

WILO Star 25/6-3 insulated pump.
For installation along with a solar circuit system.
Maximum admissible pressure: 10 bar
Maximum admissible temperature: 110 °C (temporarily 130 °C)
Pressure gage: 0-10 bar
Thermometer: 0-150 °C
Gravity brakes: in supply/return ball valve
Flowmeter: Glycol 1 - 19 l/min; Water 1.5 - 22 l/min
Material: brass

 

B. Pump group solar with regulator

BIRAL MXS 13/-1 insulated pump.
To be installed along with a solar circuit.
Maximum admissible pressure: 6 bar
Maximum admissible temperature: 120 °C (temporarily 160 °C)
Pressure gage: 0-10 bar
Thermometer: 0-120 °C
Gravity brakes: in supply/return ball valve
Flowmeter: 2 - 15 l/min

Regulator: 7 pre-programmed hydraulic variants 3 mechanical relays for additional functions control e.g. transfer valve etc. 4 sensor inputs NTC 5 kOhm Background lighting Cascaded storage tanks Cascaded heat exchangers Change reversal Heating return flow Integrated calculation of solar yield

C. Pump group heating circuit

Solar pump Grundfos UPE 25-60 to be installed with a mixed heating unit (- with a 3-way mixing valve). It has integrated electronic power control, it is completely insulated and noise free.

Maximum admissible pressure: 8 bar
Maximum admissible temperature: - 15 to 110 °C (temporarily 130 °C)
Kvs-value: 6.2
Thermometer: 0-120 °C
Gravity brake: in return flow
Material: brass

D. Circulating pump group

Solar pump WILO Star RS 25/6-3 to be installed with an unmixed heating circuit or a storage tank charge. It is completely insulated.

Maximum admissible pressure: 8 bar
Maximum admissible temperature: - 15 to 110 °C (temporarily 130 °C)
Kvs-value: 9.7
Thermometer: 0-120 °C
Gravity brake: in return flow
Material: steel, brass

E. Pump group boiler

Boiler charging set for installation between solid-fuel boiler and heating circuits and/or storage tanks with self-regulating bypass valve for return control. The opening temperature of the valve can be set between 40-70 °C. The pump group (-Grundfos UPS 25-40 pump) is completely insulated.

Maximum admissible pressure: 8 bar
Maximum admissible temperature: 110 °C (temporarily 130 °C)
Kvs-value: 9.7
Thermometer: 0-120 °C
Gravity brake: in flow
Material: steel, brass

 

F. Digital thermostat

A compact, digital (- 3-digit) electronic thermostat for heating or cooling regulation, to be used on the solar stratified storage tank LATENTO XXL.

Size: 90mm x 22.5mm.

A resistance thermometer, thermocouples or signals of current/voltage units can be connected to the measurement input.
Customer specific linearization via table function in the setup programme.

PC interface available for configuration and parameterization on the PC.

G. Electric heating element (Item no. 878 700 036 and 878 700 037)

For electric reheating of the solar stratified storage tank LATENTO XXL.

 

H. Servo motor

The servo motor is used as an electromotive drive for the pump heating circuit by fitting on the 3-way mixing valve. The voltage supply is interrupted when the servo motor reaches either of the limit switches. It can also be put into manual operation

I. 3-way valve

The pressure-relieved Honeywell valves with open/shut function are installed in both residential buildings and heating/cooling applications in small single-purpose buildings. They work very silently and dampen water shocks due to their design for spindle-shaped adjustment travel. The drive only consumes current when it travels to a preset position. The driving head can be removed without interrupting the water circulation. The design of the valve cone allows sealing the water passages via the valve independently from the differential injection pressure. The valves are suitable for water distribution from AB to A or B. Control via on/off thermostat or via all-inclusive regulation.

J. Solenoid valve (closed when de-energised), Solenoid valve (-open when de-energised)

For automatic switch off of individual system circuits (prevents e.g. circulation via the heater at backup heating).

Type 1: The solenoid valve is closed in rest position
Type 2: The solenoid valve is open in rest position

The valve operates from 0 bar and higher, it does not require a minimum differential pressure. It is suitable for systems with low or fluctuating pressure conditions.

Material: stainless steel, PVDF and brass
Fluid temperature: -10 to 90°C
Ambient temperature: -10 to 50°C

PRINETO

Plastic Pipe System and Plumbing pipe system

PRINETO plastic piping system is a proven, patented, polyethylene piping system for plumbing and heating, used with flexible and rigid pipes. The fitting range covers all usage requirements in the field of plumbing, heating and underfloor heating systems and also for pressurised air and other applications. Available pipe diameter sizes: 16, 20, 25, 32, 40, 50 and 63 mm. The PRINETO sliding sleeve joint guarantees the highest reliability with simplest and fastest installation. No adhesives, welding or soldering necessary.

Detailed solutions developed with users to ensure standard-compliant, clean laying, time and money saving.

With a 10-year guarantee and strict internal and external monitoring by recognised European testing institutions, you can be certain that you are buying top quality products.

The PRINETO plumbing pipe system is ideal for hot and cold drinking water in buildings.  Flexible and rigid PE-X pipes and fittings of special brass (-TWVO Standard of 01/2003).

Continuous operating pressure up to 10 bar at 70°C.

All PRINETO pipes and fittings are corrosion resistant, toxicologically and physiologically safe.

Advantages

1. Cross-linked polyethylene
2. Extremely long durability compared to PE-RT, corrosion-resistant
3. DIN-tested and approved by European testing organizations
4. Nanoflex: the first patent-protected 100% oxygen impervious PE-X pipe worldwide
5. Nanoflex is UV-resistant
6. Flexible and rigid pipes can be used with the same kind of fitting

For more detailed information please see: "PRINETO Pipes/Sliding Sleeves"

Heater installation system

The PRINETO Heater installation system is an enhancement of the drinking water pipe system, based on the same fitting system. It consists of special MS 60 (brass) fittings for the heater connection. For the installation, flexible EVOH-coated PE-X heating pipes (red), flexible Nanoflex universal pipes (stainless steel coloured) and Stabil pipes (white multilayer-pipe) are used.

Advantages

1. All PRINETO pipes are oxygen impervious (-PRINETO heating pipes and Nanoflex universal pipes comply with DIN 4726/29)
2. Direct installation from heating boiler to radiators possible
3. Direct connection from heater with PRINETO Nanoflex pipe in stainless steel colour
4. Maximum connection capacity 60kW (with expansion 15K and 200 Pa/m) also for larger building and industry
5. Applicable in both hot water and building cooling systems
6. Completely insulated crossing Tees

Practical skirting board system for renovating old buildings

PRINETO Plumbing and Heating System

Surface heating system

 

The PRINETO surface heating system is an addition to the heating system. It is ideal for underfloor heating, using both the wet and dry laying methods. The pipes are secured either by tacker needles to the self-adhesive PRINETO tacker foil above the insulation, or using the PRINETO knobbed board or PRINETO fixing rail.

The PRINETO surface heating system is suitable for:

• Residential and industrial buildings
• Open spaces, sports facilities, public facilities etc.

Other supplementary components to the PRINETO pipes used for the surface heating system are:

• Thermostats
• Contact thermometer
• Distributor cabinets
• Electrical actuator
• Room temperature controllers
• Boarder insulating strip
• Heat and sound insulating board EPS 30mm DES
• Supplementary thermal insulating boards
• System reel with grid foil
• Self-adhesive tacker foil
• Tacker needle
• Plate-head plug for insulation
• Grooved board
• Knobbed board
• Levelling board
• U-turn element for internal insulation below screed without impact protection requirement; for dry floor heating with pipe grooves for tool-less fixing of Stabil pipe 16 at the bends
• Screed agent

Further information and product catalogue is provided in the document : "PRINETO Surface Heating System".

Tools
PRINETO Tools have been designed to make the implementation of the patented PRINETO sliding sleeve connection easier. The variety of products ranges from a simple tape holder to complete installation cases with electric gripper pliers. For working with dimension of 14 up to 32 there is a choice between manual, electric or cordless tools.

Advantages

• Developed and tested in cooperation with users
• Quick and easy handling even in "narrow" places
• No regular maintenance required
• Manual tools up to dimension 32
• Light weight
• Ensures optimum connections
• Cutting of pipes without burrs - no chamfering
• No residues in connections

A full product catalogue can be downloaded here:   "PRINETO Tools"

 

Complete solution

back to top