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installation instructions
Figure 12
80
80
ONLY USED IN ESDW2 MODEL
GLYCOL LOOP
DISTILLED WATER LOOP
CauTiOn: Hazards caused by neighboring
building components, electrical, gas, water, or
heating pipes must be prevented.
1.
Select the installation location. Refer to Figure
12 for recommended layout.
!
nOTE: Access to the Solar Controller, pressure
relief valves, and the connecting cables must be
ensured.
2.
Align and mark the mounting holes using the
back insulation shell.
3.
Drill mounting holes and install wall anchors, if
necessary.
!
nOTE: Run electrical cables through the outer
insulation access holes in the back insulation shell
before mounting unit to wall.
4.
Secure the insulation shell and mounting brack-
et to the wall and into the mounting holes.
CauTiOn: Connect all piping and ensure there
are no leaks before making any electrical connec-
tions.
5.
Connect the Solar Collector piping to the top
portion of the Solar pumping Station (Figure
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80
80
WIRING (POWER AND SENSORS)
11).
!
nOTE: Instructions for piping connections to the
HXA pumping Station unit can be found in the HXA
pumping Station installation section, if applicable.
6.
The Solar pumping station requires two addi-
tional components to ensure safe and hazard
free operation:
•
Expansion Tank - See Solar Loop Expan-
sion Tank section for Installation Instruc-
tions.
•
pressure relief collection container - It is rec-
ommended to have a container 0.26 gal (1L)
in size - Installer Supplied.
!
nOTE: The pressure relief valve is factory set to
87 psi (6 bar).
Warning: The liquid in both of these contain-
ers can be hot and the risk of scalding will be
present. When choosing the type of piping and
collection container this should be taken into
account.
Warning: The liquid being collected is high
pressure and high temperature polypropylene
glycol and all associated safety precautions
should be exercised.
CauTiOn: To operate the system, the Flush
and Fill ball valves must be completely closed (Fig-
ure 11H) - See Commissioning Section for addi-
tional operational instructions.
CauTiOn: Refer to tank labels and valve label-
ling for proper fluid flow directions.
7.
See Solar Controller Installation section for Wir-
ing Instructions.
8.
Install the provided insulating cover onto the
solar pumping station.
!
nOTE: Ensure all connecting piping is insulated
to reduce heat loss.
Solar Loop Expansion Tank
The Solar Loop Expansion Tank is an important
safety component to the Solar Domestic Hot Water
System. As the temperature of the polypropylene
Glycol increases the volume does as well, the
Solar Loop Expansion Tank compensates for this
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