SUNEARTH SUNSIPHON
DOMESTIC SOLAR WATER
HEATING SYSTEM
INSTALLATION, OPERATION AND
MAINTENANCE MANUAL
The SunSiphon domestic solar water heating system has gone through an extensive design, technical and per-
formance review by the Solar Rating & Certification Corporation (SRCC). The installation of your SunSiphon
system is intended to be executed by properly licensed and experienced professional contractors in accordance
with SRCC Standard OG-300, “Operating Guidelines and Minimum Standards For Certifying”, and must con-
form to applicable federal, state and local regulations, codes, ordinances and standards governing the installa-
tion of solar water heating systems.
The solar energy system described by this manual, when properly installed and maintained, meets the mini-
mum standards established by the SRCC. This certification does not imply endorsement or warranty of this
product by the SRCC.
OG-300 system certification is granted to SunEarth by the SRCC. It may not be used for any commercial pur-
pose without the prior written consent of SunEarth. SunEarth must approve any deviation from the materials
and methods described in this manual in writing.
The SunSiphon solar water heating system should not be installed in any area that has experienced
ambient air temperatures below 15° Fahrenheit (-12° C) for an 18 hour period. Use Table 5, Section 4 of
this manual to determine the required concentration of propylene glycol and distilled water to provide
adequate freeze protection in your specific climate.
Dow Chemical “Dowfrost HD” propylene glycol heat transfer fluid shall be used in this system as the primary
freeze protection agent. Unauthorized fluid substitutions can result in a threat to health, welfare and safety and
may cause the system piping to freeze.
All component warranties express or implied, are voided if uninhibited glycol, potable or distilled water are
substituted for the specified heat transfer fluid described in this manual, or if the heat transfer fluid is not
maintained in accordance with the manufacturer’s specific instructions.
Freeze tolerance limits are based upon an assumed set of environmental conditions. Extended periods of cold
weather, including ambient air temperatures above the specified limit may cause freezing in exposed parts of
the system. It is the owner’s responsibility to protect the system in accordance with SunEarth’s instructions if
the ambient air temperature approaches the specified freeze tolerance limit.
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