Specifications

INSTALLATION – SOLAR STORAGE TANK
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If a combination isolation valve and non return valve (duo or trio valve) is installed on the cold water line to
the solar water heater and the cold water line to the temperature limiting device branches off after this valve,
then a second non return valve must be installed between the cold water branch and the solar storage tank.
Due to the higher water temperatures generated under certain conditions in the solar collector(s) of this solar
water heater, an effective back-flow prevention device should be used as the second non return valve as an
extra safeguard. Valve manufacturer RMC recommends Dual Check Valve model N7150, as being suitable
for this application.
If a pressure limiting valve is installed on the cold water line to the solar water heater and the cold water line
to a temperature limiting device branches off before this valve or from another cold water line in the
premises, then a pressure limiting valve of an equal pressure setting may be required prior to the
temperature limiting device.
LEGEND
Integrated In-series Gas Booster as part of a Direct VS160 Solar Water Heater Installation
Two Temperature Zones Using a Temperature Limiting Device
LEGEND
Remote In-series Gas Booster as part of a Direct VS160 Solar Water Heater Installation
Two Temperature Zones Using a Temperature Limiting Device