Hydraulic installation

How to install DualSun SPRING3 panels?
It is important to distinguish between our two generations of SPRING currently available: The SPRING3 , with its polymer exchanger, sold from July 20...
What are the differences between the installation of conventional solar thermal and DualSun SPRING hybrid panels?
DualSun hybrid modules are installed according to the general rules of conventional solar thermal, but have specificities: Maximum number of panels  i...
What is the maximum number of SPRING panels that can be connected in series on the same branch?
It is important to distinguish between our two generations of SPRING currently available: The SPRING3 , with its polymer exchanger, sold from July 20...
What are the different hydraulic layouts for DualSun panels on residential roofs?
Here are the hydraulic notebooks to be preferred for the residential. Installation on one line Install on one line Installation on 2 lines If it is n...
What is the equipment for a solar water heating system ?
You will find below the diagram for an Individual Solar Water Heater (ISWH), which produces Domestic Hot Water (DHW), with our DualSun SPRING hybrid s...
What does the DualSun Essential Kit contain?
The DualSun Essential Kit consists of :  The DualSun SPRING temperature probe which is to fit in a panel and to connec to the S1 terminal block of t...
How do DualQuickFit interpanel connectors work?
To connect SPRING panels to each other, DualSun has developed DualQuickfit quick couplings, mounted on flexible lines packaged in the form of crowns. ...
How to install the inlet - outlet fittings kit on the DualQuickfit hydraulic links?
A kit of brass inlet / outlet fittings is used to connect the inter-panel links to the transfer circuit. M3/4’’ for DN15 inter-panel links M1’’ for DN...
What are the pressure losses of the DualSun SPRING panel?
The pressure losses of the DualSun SPRING panels were measured with a heat transfer fluid comprised of 40% propylene glycol and 60% water at 30 ° C. R...
Is the DualSun SPRING panel drainback compatible?
Yes,  the DualSun SPRING panel is drainback compatible!   The design of the DualSun SPRING panel was conceived in large part for pool heating installa...
Can the DualSun panel be installed with a drain-back system?
Nowadays, the main reasons that push installers to prefer a drain-back system concern the overheating and subsequent denaturation of the glycol. With ...
Is the DualSun solar station equipped with a non-return (or anti-thermosyphon) valve?
Yes, the DualSun SLL solar station is equipped with anti-thermosyphon check valves on each hydraulic line, as specified in the data sheet . When the...
Is the DualSun SPRING panel compatible with Kilfrost GEO antifreeze fluid?
YES . SPRING heat exchanger materials and DualSun DualQuickfit inter-panel links are all compatible with Kilfrost GEO antifreeze fluid.   What materia...
What is the maximum number of Wave panels that can be connected in series on the same branch?
We recommend limiting the hydraulic chains to maximum 6 Wave panels in series to respect the recommended flow rates while keeping reasonable load loss...
Can the refrigerant from the heat pumps be circulated through the SPRING panels?
No, the refrigerant used in heat pumps cannot be circulated in SPRING panels.    The refrigerant cycles thermodynamically by absorbing heat at low te...
Is there a direction of hydraulic connection to respect on an installation of Dualsun SPRING panels?
It is important to distinguish between our two generations of SPRING currently available: The SPRING3 , with its polymer exchanger, sold from July 20...
Is it possible to install the solar water tank horizontally?
We do not recommend the use of horizontal tanks (except in thermosiphon applications). Indeed, the stratification (a consequence of the fact that hot ...
Do I need to put a drain at the top of the panel?
A solar thermal installation can be filled by means of a station that during the filling operation compresses and expels a large part of the air from ...
Is it necessary to install a hot water/cold water mixing valve at the outlet of a DualSun water tank?
Current building codes in France require the installation of a hot/cold water mixer at the outlet of solar tanks, so YES we recommend the installation...
How is the temperature probe connected to the SPRING panel?
In order to Install the system, a PT1000 probe is provided in the essential kit for each DualSun installation. This probe is to be inserted into the...
Is it necessary to insulate hydraulic lines with SPRING?
The insulation of the pipes depends on the type of application (therefore the temperatures of the heat transfer fluid) of the different systems and th...
What is the recommended diameter of the pipes between DualSun SPRING panels and the technical room?
The choice of the diameter of the hydraulic lines between the DualSun SPRING3 or SPRING4 panels and the technical room directly influences the hydraul...
What is the diameter of the S2 probe at the bottom of the tank provided by DualSun?
The S2 probe provided by DualSun to measure the temperature at the bottom of the hot water tank is an FKP6. It has a diameter of 6mm.     D  L1  L2 M...
How to properly install the probe at the bottom of the DualSun 200-300 2E water heater?
The thermowells of the DualSun 200-300 2E water heater have a diameter of 12 mm, the bottom tank probe supplied in the DualSun essential kit is a PT1...
How to adjust the flow balancing of a DualSun multi-field installation ?
Depending on the application and the layout (arrangement of the panels on the roof), several cases can be distinguished and several solutions are poss...
What happens if there is a leak in the panel?
The DualSun panel has undergone numerous accelerated ageing tests to guarantee that the  heat exchanger will not have any leak issues . In the case a ...
What piping is recommended between the solar panels and the technical room?
The transfer circuit lines transport the heat transfer fluid between the panel field and the elements of the solar circuit in the technical room. Once...
Is it possible to install the hydraulic lines in front of the building?
Yes , it is possible to pass the hydraulic lines on the front of the building.   Depending on the edifice, it is not always possible or obvious to run...
Is the DualSun Wave panel drainback compatible?
No , the DualSun Wave panel is not drainback compatible. It should be noted, however, that the main reasons installers prefer a drainback system conce...
Are the Wave inter-panel hoses airtight?
Our Wave hydraulic hoses are made of butyl and surrounded by a stainless steel braid to guarantee pressure resistance and prevent any damage to the ho...