Owner`s manual

ENGLISH
Conergy AS
Owners Manual
4
What is an Open Circuit System?
An Open Circuit System is one where the water used in the household circulates through the solar
collector panels, thus transferring solar energy to the storage tank. This system type is used in
locations where the ambient temperature never falls below freezing point (0°C or 32°F) and where
the water quality is good – less than 600 ppm Total Dissolved Solids (TDS).
What is a Closed Circuit System?
A Closed Circuit System is a system where two seperate circuits are contained within the solar
water heater. The first circuit is the household water storage tank which stores the heated
household water used within the household. The second circuit is the solar collector circuit which
is fully sealed and mechanically separated from the household water circuit by a heat exchanger
system. The fluid within the solar collector circuit is a mixture of household water and food
grade propylene glycol. This fluid mix transfers solar energy from the solar collectors to the heat
exchanger system and prevents damage to the solar collectors should the ambient temperature
fall below freezing point. This system type can be used in any climatic location and with any water
quality considered suitable for human consumption.
Open Circuit System
Closed Circuit System
1.3.1
1.3.2
1 Owners Information