SOLARAY 2
DOMESTIC SOLAR WATER
HEATER SYSTEM
INSTALLATION, OPERATION AND MAINTENANCE MANUAL
The SolaRay 2 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 SolaRay
2 system is intended to be executed by properly licensed and experienced professional contractors in accor-
dance with SRCC Standard OG-300, “Operating Guidelines and Minimum Standards For Certifying”, and
shall conform to applicable federal, state and local regulations, codes, ordinances and standards governing the
installation 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.
SunEarth SolaRay 2 solar water heating systems can be protected against freeze damage to temperatures as low
as -60°F (-51°C). This system should not be installed in any area that has experienced ambient air tempera-
tures below -60°F. Use Table 4, 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.
Propylene Gycol 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, expressed or implied, are voided if uninhibited propylene glycol, potable or dis-
tilled 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 manufacturers 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.
