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PHASE III — Commissioning
Diverter Valve
The diverter valve is critical to the function of the ther-
mal system. Ensure it functions properly.
1. Check that the actuator repositions the valve when
directed.
2. Check that the set positions direct flow as ex-
pected.
Pressure & Leak Check
Test that the thermal system will hold under normal oper-
ating pressure without leaking (no greater than 30 psi
with the system below 100°F).
CAUTION: Over-pressurizing Panels will void the war-
ranty.
1. Open the isolation valve and direct the diverter
valve to allow flow into the thermal loop.
2. Turn on pool pump.
3. Allow the system to run, checking all pipes, con-
nections, and Panels for signs of leaking.
4. If no leaks appear then the system is ready for op-
eration. If leaks do occur, address the issue and
repeat the test procedure.
Placement of Sensors
When automating a system it is critical that tempera-
ture sensors be placed in appropriate positions. Please
refer to the manufacturer's installation manual of your
chosen controller.
Pool Temperature Sensor
A pool temperature sensor is used by the automation
controller to decide when to turn the system on or off
for efficient temperature control and energy use.
Solar Temperature Sensor
By taking measurements of the roof, the controller can
compare the solar temperature to the current pool tem-
perature. This information allows the system to achieve
the desired, final pool temperature.
System Automation
To ensure optimum performance, it is highly recom-
mended to automate all solar thermal systems with an
automation package of choice. There are many auto-
mation packages which are available from pool suppli-
ers such as Pentair, Jandy, and Hayward. It is recom-
mended by FAFCO
to source from a supplier of your
®
preference.
A Solar Pool Automation Kit should include a mini-
mum of the following:
1. A Diverter Valve Actuator (180° or 90°)
2. An in-plumbing Pool Temperature Sensor
3. An ambient Solar Temperature Sensor
4. A Programmable Automation Controller
It is common to program the controller so that the so-
lar system will run if roof temperatures are 6°F or
greater above the pool temperature and to bypass the
solar loop if the roof is less than 3°F above pool tem-
perature. For further system automation, see instruc-
tions from the Manufacturer of the equipment being
used.
Commissioning Checksheet
Ensure the full solar pool system is operational. Refer
to the associated installation manuals as necessary.
Once everything is functioning as intended for normal
operation, fill out the Commissioning Check Sheet lo-
cated in Appendix A.
The Commissioning Check Sheet has been provided as
an aid to make sure that your system is installed cor-
rectly. In addition, the Commissioning Check Sheet
can be used as a supplementary reference document
for future service work.
®
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