What is a roof mounted photovoltaic system guidance?

The guidance refers only to the mechanical installation of roof mounted integrated and stand-off photovoltaic systems; it provides best practice guidance on installation requirements and does not constitute fixing instructions.

How to install a solar photovoltaic system?

The installer should conform to all the safety precautions listed in this guide when installing the module. Local codes should also be followed in such installations. Before installing a solar photovoltaic system, the installer should become familiar with the mechanical and electrical requirement for such a system.

Can a PV system be integrated into a flat roof?

In some cases, PV systems can be integrated directly into flat roofs (Figure 25), although this is not common because the efficiency of PV modules is reduced because the optimum angle relative to the sun is not achieved.

Can a photovoltaic system be installed on a ul2703 certified roof?

A photovoltaic system composed of UL1703 certified modules mounted on a UL2703 certified mounting system should be evaluated in combination with roof coverings in accordance with UL1703 standard, with respect to meeting the same fire classification as the roof assembly.

How to mount solar modules on a roof?

Mounting diagram There are various possibilities for the arrangement of the mounting system and the modules on the roof. The most common option is to horizontally assemble type TF50+ carrier rails and arrange solar modules vertically. For this reason, any further mounting procedures describe such an arrangement.

How do you mount a solar thermal collector on a roof?

Above roof solar thermal collectors are generally mounted using hook or bolt-through fixings; these can be similar to those used on PV systems although the fixings tend to be of heavier construction to support the higher dead loads (Figure 28). Figure 28 Bolt fixing for solar thermal system.