lp-606 Rev. 000 Rel. 006 Date 2.19.20
7
D. Potable Water Piping Application
Figure 3 - Potable Water Piping Application. Meant to demonstrate
piping concept only. Installer is responsible for all equipment and
detailing per local codes.
E. Tank Sensor Placement
Make sure the sensor is secured on the stud located in the
lower section of the water heater. Secure the sensor by packing
Armaflex insulation behind it. This will also help the sensor react to
temperature change.
Non-toxic freeze protection fluid must be used to protect the system
from freezing. Use a mixture appropriate for your climate. Do not
use a higher glycol to water concentration than necessary, as this
will adversely impact heat transfer efficiency. See the manufacturer’s
data sheet for recommended concentrations. A copy of this sheet
must be left with the end user of the solar system.
The collector loop must be charged with HTF. Use potable water
as a mixing agent ONLY. Regular scheduled maintenance must be
established to monitor and maintain the proper pH level of HTF in
the system to protect the heat exchanger and other components in
the system.
return line should be approximately 5 – 12
o
F warmer than the water
in the collector supply line. Compare the temperature readings in
the two line thermometers. The ¾” cold water supply line to the
storage tank must be insulated with a minimum 7/8” x ½” pipe
insulation to a minimum distance of 5’ behind the storage tank, or to
the wall if closer than 5’.