Rheem 511161 Owner's Manual And Installation Instructions page 27

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.
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.
Integrated In-series Gas Booster as part of an Open Circuit Solar Loline Water Heater Installation
Two Temperature Zones Using a Temperature Limiting Device
LEGEND
Remote In-series Gas Booster as part of an Open Circuit Solar Loline Water Heater Installation
Two Temperature Zones Using a Temperature Limiting Device
LEGEND
INSTALLATION – SOLAR STORAGE TANK
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