Rheem 612 Owner's Manual And Installation Instructions page 51

In-series Gas Booster as part of a Solar Water Heater Installation
REDUCING HEAT LOSSES
The hot water line from the water heater and the pipe work between the solar storage tank, if one is installed,
and the in-series gas booster must be insulated in accordance with the requirements of AS/NZS 3500.4. The
insulation must be weatherproof and UV resistant if exposed. The insulation must be fitted up to the
connections on the both the underside of the water heater and the solar storage tank.
Circulated Hot Water Flow and Return
Continuous Flow Gas Water Heater
Circulated Hot Water Flow and Return
51
INSTALLATION – WATER HEATER
from solar
storage tank