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Solar hot water systems should be designed and sized correctly before commencing
installation. Proper design will ensure that a system is correctly sized to provide many
years of optimised performance and most or all of the required hot water when the most
solar radiation is available. However a supplementary heating system such as oil or gas
boiler, heat pump or wood boiler is required for months which have less solar radiation.
For large systems, Kingspan provides a system design service to technical design consultants.
This guide will illustrate and explain how a system should be installed to conform with the
Kingspan Environmental manufacturer guidelines for the Solar Thermal product models,
namely DF400, HP400, Varisol and FPW.
Using this guide
Stages of a solar installation are described in the following pages, with illustrations to
explain how to install the relevant components, and contains general recommendations
and important safety information.
Handling Guidance
❱Tube and manifold boxes should be transported horizontally to prevent damage.
❱Flat Plate Collectors should be stored vertically.
❱Heavy goods should not be loaded on top of the kit boxes.
❱Care should be taken when opening boxes to prevent scratches or sudden shocks to the glass.
❱Do not use sharp objects to open the tube boxes.
Installation Guidance
❱Unpack and install tubes and flat plates only after the manifold and pipe work has been
installed.
❱With the HP400 and HP450 only, tubes may be installed after the system has been
filled, pressure tested and is ready for operation.
❱The solar thermal system should have permanent power supply with a fused spur. It
should never be turned off except during maintenance.
❱Do not leave the solar collector exposed to solar radiation when the solar loop and
manifold have been drained. Collectors left exposed in a dry state must be covered to
prevent possible long term damage.
❱HP tubes must have a minimum elevation of 20˚ and a maximum of 70˚.
❱The dark blue side of the copper within the tube is the active surface.
❱For DF400 system and Varisol DF, a heat dissipation loop (heat dump) is strongly
recommended – please refer to the technical design guide. A heat dissipation loop is also
required for systems with a seasonal demand.
❱The pipework of the solar collector loop is to be earthed and the collector is to be
lightning protected in accordance to local regulations.
Health and Safety Precautions
A solar panel installation must be performed in accordance with all Health & Safety
legislation and local building/planning regulations for the relevant jurisdiction.
Furthermore, the necessary electrical work required to install control equipment should be
undertaken by a qualified electrical contractor.
Introduction