Rheem GAS BOOSTED SOLAR WATER HEATER - Manual (Page 37)

COMMISSIONING
37
Warning: Although non-toxic, the following first aid advice and procedures should be followed if the
closed circuit fluid concentrate comes into human contact or is spilt:
• Swallowed - give milk or water and seek medical attention.
• Eyes - wash with running water.
• Skin - remove contaminated clothing and wash skin with water and soap.
• Inhaled - seek fresh air, rest and keep warm.
• Spilt - immediately remove contaminated clothing, stop leak source, absorb with a dry agent and
eliminate any ignition sources nearby.
PRE-COMMISSIONING WARNINGS
• It is recommended to conduct the solar circuit commissioning procedure with the solar collectors
covered, otherwise during the commissioning and checking procedure of the solar circuit, the
closed circuit fluid may experience solar gain as it passes through the solar collectors. This will
increase both the temperature and pressure of the closed circuit fluid and air inside of the solar
circuit.
• The electrical supply must be switched off before the solar circuit is opened either at the solar
circuit relief valve or at the compression nut on either of the solar hot or solar cold pipes at the top
of the solar storage tank.
• If it is necessary to open the solar circuit at the solar circuit relief valve or at the compression nut on
either of the solar hot or solar cold pipes at the top of the solar storage tank, then care must be
taken so as not to be scalded by either the closed circuit fluid or the air escaping from the solar
circuit.
Pre-Commissioning Notes
• Before commencing the solar circuit commissioning procedure, check the solar cold and solar hot
pipe work to ensure:
ƒ there is a continuous fall from the solar collectors to the solar storage tank of a minimum 5 °
(1 in 10 grade).
ƒ the maximum recommended pipe length is not exceeded.
ƒ the maximum height from the base of the solar storage tank to the solar collector is not
exceeded.
Rectify the solar pipe work if there is either insufficient fall or not a continuous fall of at least 5°
from the solar collectors to the solar storage tank or if either of the maximum pipe length or
maximum height of the system has been exceeded, before commencing the solar circuit
commissioning procedure. Refer to
“Pipe Lengths” on page 27.
• The solar collectors will gain a high level of heat during periods of solar radiation. If the solar pump
is activated during a period of high solar radiation and the solar collectors have not been covered,
the initial flow of closed circuit fluid will absorb this heat and a rumbling sound may be heard. This
is normal and the solar circuit will achieve a stable operating condition once full flow through the
solar circuit is established.
• The solar pump is set on the speed setting 3. This speed setting must not be adjusted. The solar
control unit automatically controls and adjusts the speed of the pump to maximise solar
contribution. Manual adjustment of the speed dial setting may result in the system not operating
correctly or efficiently.