2
Dangerous Heights
Solar collector(s) are often installed on the roof of a building. Unless you’re familiar with working on roofs and
have the proper ladders and safety equipment for such work, you should hire someone with the necessary
experience to do the installation. Failure to observe safe practices on a roof or other elevated structures may
result in falling and serious injury. Working alone increases the chance of an accident happening. Be sure to
have help or someone nearby to assist you.
High Voltage
Some aspects of installation involve working around and with high voltage. Electrical connections to the hot water
heater (if electric) are typically 240 VAC and CAN KILL YOU. Use precautions and ensure that all electricity is
shut off to the area in which you’re working. Use the breaker box and remove the breaker if you have to. Check
with a voltmeter to verify the voltage is off before contacting any electrical connections. Consult with a licensed
electrician if you have any doubts about the process. Check your local building codes.
High Water Pressure and Temperature
Electric and gas water heaters operate at high water pressure and temperature. Be sure to turn off your water
supply and open drain valves to depressurize the system before unthreading or cutting into any part of the water
heater plumbing. Consult a licensed plumber if you have any doubts. Check your local building codes.
Hot water is dangerous. Water temperature to the home
can be regulated by adjusting the temperature control
valve. The recommended set point is 120° F. There is
a scald potential if the temperature control valve is set
too high.
Hot water can produce first degree burns within:
• 120° F (49°C) more than 5 minutes
• 130° F (54°C) at 20 seconds
• 140° F (60°C) at 3 seconds
• 150° F (66°C) at 1-1/2 seconds
• 160° F (71°C) at less than 1 second
!
WARNING
!
WATER TEMPERATURE REGULATION
Safety
Extended periods of cold weather, including ambient air temperatures below minus 20
o
F may cause freezing in
exposed parts of the system. For installatins where plumbing cannot completely drainback tank, add 3 gallons of FAFCO
HTF (Heat Transfer Fliud) which equates to a 35% mixture. Use of any other heat-transfer fluid will void warranty, and
may result in poor performance and/or equipment damage. Freeze protection with 35% FAFCO HTF is conservatively es-
timated down to -20
o
F.
Freeze tolerance limits are based upon an assumed set of environmental conditions.
MSDS
is available at www.fafco.com for information on disposal and First Aid. FAFCO system is overheat protected and has little
metal in contact with fluid. It therefore does not promote deposits, corrosion, or degradation of fluid mixture.
FREEZE PROTECTION
Summary of Contents for Drainback 200 Series
Page 33: ...31...
