Operating instructions
INSTALLATION – WATER HEATER 
41 
Circulated Hot Water Flow and Return - Continuous Flow Gas Water Heater 
Circulated Hot Water Flow and Return 
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. 
from solar 
storage tank 










