Specifications

Table Of Contents
INSTALLATION SOLAR COLLECTOR(S)
41
WARNING: Plumber Be Aware
A non return valve MUST BE installed on the cold water line to the solar storage tank AFTER the
cold water branch to a temperature limiting device. Due to the higher water temperatures generated
under certain conditions in the solar collector(s) of this solar water heater, an additional effective
back-flow prevention device also should be used as an extra safeguard. Valve manufacturer RMC
recommends Dual Check Valve model N7150, as being suitable for this application.
The pressure applied to the solar circuit and solar collector(s) during a pressure test of a direct open
circuit system MUST NOT exceed 1000 kPa, otherwise damage may result to the solar collector(s).
Refer to “Pressure Testing” on page 39.
Maximum height to collector(s)
The maximum height of a solar VS160 installation, from the solar controller (circulator) to the top of the solar
collector(s), is determined by the maximum recommended total pipe length for the system and the water
supply pressure.
The maximum recommended total pipe length of the solar circuit should not be exceeded and a minimum
water supply pressure of 200 kPa should be available at the inlet to the system, otherwise the system
performance may be reduced or the solar circuit may not be purged of air during the commissioning of the
system.
Direct Open Circuit Solar Pipe Work Installation Requirements