DUALSUN SPRING4 Installation And Commissioning Manual
Solar thermal heat pump system
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Summary of Contents for DUALSUN SPRING4
- Page 1 Solar thermal heat pump system installation and commissioning manual V1.0 April 2023...
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Page 2: Table Of Contents
3. Installation of solar components ..................17 3.1. Heat pump installation ................... 17 3.2. Installation of DualSun SPRING4 hybrid panels ............17 3.3. Installation of the DualSun solar thermal solar station ..........17 3.4. Installing the filter valve ..................17 3.5. Circuit isolation ..................... 17 4. -
Page 3: Introduction
Please read this installation manual thoroughly and in detail in order to be able to fully exploit the functionality of the product. DualSun disclaims all liability for defetcs and damages that would result from non-compliance with the installation instructions (improper use, incorrect installation, handling error, etc.). -
Page 4: Dimensional Conventions
Solar thermal heat pump system installation and commissioning manual 1.2.1. Photovoltaic solar standards • IEC / EN 61215 1 and 2: Design qualification and approval of crystalline silicon photovoltaic (PV) modules for terrestrial application. • IEC / EN 61730 1 and 2: Photovoltaic (PV) module safety qualification - part 1: Requirements for construction and part 2: requirements for tests. -
Page 5: Description Of A Solar Thermal System
2.1. Principle of operation of a solar thermal system and defini- tion of terms The purpose of this manual is to describe the operation and specificities of a coupling of DualSun hybrid solar panels on the primary (cold) circuit of a glycoled water to water heat pump. - Page 6 Solar thermal heat pump system installation and commissioning manual STANDARD CONFIGURATION SHOWN Information: In this manual, all dimensions and descriptions consider a configuration that we have defined as standard: Water/water heat pump supplying a DHW tank and a heating circuit via a buffer tank. This tank can be integrated into the storage tank.
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Page 7: List Of Components
Solar thermal heat pump system installation and commissioning manual 2.2. List of components The components of the system coupling the DualSun hybrid panels and the Water/Water heat pumps are described in the following diagram and table. Table 1. Heat pump coupling diagram... -
Page 8: The Heat Pump
Solar thermal heat pump system installation and commissioning manual Number Description Comment Thermostatic mixing valve included in the DualSun solar thermal station draining valve included in the DualSun solar thermal station Deaerator included in the DualSun solar thermal station Visual pressure gauge and safety valve... -
Page 9: Dualsun Spring4 Panel
2.4. DualSun SPRING4 panel 2.4.1. Description The DualSun hybrid panels constitute the unique cold source of the heat pump: they are hydraulically connected to the primary circuit (collection circuit) of the heat pump. The solar installation is thus sized according to the characteristics of the heat pump to supply its evaporator with heat. -
Page 10: Input-Output Kit
NOTE For more information on pressure losses as well as thermal performance of DualSun hybrid panels, refer Installation, use, maintenance instructions SPRING4. -
Page 11: Inter-Panel Connections
Solar thermal heat pump system installation and commissioning manual 2.5.2. Sizing You must count one hydraulic kit per hydraulic line of panels. 2.6. Inter-panel connections 2.6.1. Description Each kit contains 2 fittings. Inter-panel connections allow panels of the same hydraulic line to be connected in parallel to each other. -
Page 12: The Dualsun Solar Thermal Station
NOTE If you have ordered the DualSun solar thermal station, the elements detailed in the list of components are included in the kit and constitute a single element. 2.8.1. Thermostatic mixing valve The mixing valve is an essential element to protect the heat pump evaporator from excessively high temperatures coming from the solar field. -
Page 13: Filter Valve
A safety valve is essential to prevent overpressure in the hydraulic circuit, thus causing damage to pressure-sensitive components. The safety valve of the DualSun solar thermal station is calibrated at 6 bar. 2.8.4. Filling kit A filling kit is essential to ensure the filling and commissioning of the system. See the detailed filling and... -
Page 14: Hydraulic Lines
Solar thermal heat pump system installation and commissioning manual The filter valve is a ball valve equipped with an integrated filter. It ensures filtration of the fluid contained in the solar circuit by retaining any deposits or impurities. The filter mesh size should not be greater than 1 mm. -
Page 15: Coolant
10°C. The heat transfer fluid must also be able to withstand high temperatures (up to the stagnation tempera- ture of the solar panels, to be checked on the technical sheet depending on the SPRING4 model). NOTE We recommend the use of heat transfer fluids that are the least toxic to the environ- ment and the least viscous at negative temperatures. - Page 16 • Volume of external hydraulic pipes, which depends on their length and radius V = Pi x r • Volume of internal hydraulic lines V = Pi x r • Volume of solar panels SPRING4 SPRING4 • Heat pump evaporator heat exchanger volume • Filling volume of the expansion tank...
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Page 17: Installation Of Solar Components
It must be chosen according to the characteristics of the heat pump. The mixing valve is included in the hydraulic unit supplied by DualSun. There is therefore no need to add it if you ordered this group. -
Page 18: Commissioning Steps
Solar thermal heat pump system installation and commissioning manual 4. Commissioning steps Once the entire hydraulic circuit is connected and isolated, be sure to follow the steps for complete commissioning. The commissioning steps are as follows: Airtightness test [18] Filling the lower part of the circuit [19] Filling the upper part of the circuit [19] Pressure adjustment [20] NOTE... -
Page 19: Filling The Lower Part Of The Circuit
Solar thermal heat pump system installation and commissioning manual and connect to the filling valve (number 1). Once the circuit is under pressure, take the time to check and listen to make sure that there is no whistling noise anywhere on the circuit and that the pressure remains stable for at least 5 minutes. -
Page 20: Pressurizing The Circuit
Solar thermal heat pump system installation and commissioning manual 4.4. Pressurizing the circuit WARNING During this step it is important to take into account the maximum pressure of the heat pump and never exceed it. To pressurize you will need to: •...
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