16
Installation Manual
CHARGING THE SYSTEM
Solar Tank
Fill the solar tank with water. Do this by opening the cold water isolation ball valve to the solar tank.
See Fig. 3-1. Inspect all fittings for leaks. The solar collector loop should be pressure tested with air
(25 lbs.) before you pressurize the solar collector loop with glycol. Mix the DowFrost Propylene gly-
col and distilled water in accordance with the DowFrost Data Sheet in the back of this manual. The
charging process will require a low flow diaphragm pump to fill and pressurize the collector loop.
Solar Collector
Connect the discharge side of the pressure pump to the fill valve. Place the pump suction side hose
in the glycol solution. Close the ball valve (#11). Connect a second hose to the drain valve (#10) and
place the other end of the hose in the empty bucket.
TOTAL COLLECTOR LOOP FLUID CAPACITY IN GALLONS*
1. One Collector System
3.5 gallons
2. Two Collector System
4.5 gallons
*Assumes a total 100’ pipe run using ¾” Type M hard copper tubing.
The Solar heat exchanger has a 1.5 gallon fluid capacity
Open the upper fill valve (#18) and allow the pressure from the expansion tank to push the water in
the glycol loop back to prime the pressure pump. When the hose in the bucket containing the gly-
col mixture stops bubbling, you may begin charging the collector loop with glycol. With both fill and
drain valves open, run the low flow diaphragm pump until the glycol mixture begins flowing into the
empty bucket. Quickly switch the hose from the empty/return bucket to the bucket containing the
glycol mixture. Continue to circulate the fluid using the pressure pump until the bubbling has
stopped and the air has been purged.
After charging the collector loop, shut the lower drain valve (#10) and let the pressure pump drive
up the loop pressure to the appropriate level (generally in the range of 25 PSI). To more accurately
calculate the proper pressure, measure the height of the solar collector above the Phoenix Solar
Tank and divide this number by 2.31, then add 20 PSI to this number.
After pressurizing the solar system, run the circulator and allow the air to purge out of the air vent.
Once purged, monitor pressures and check for leaks before insulating pipes. Pressure should then
be about 25 PSI.
Above ground piping must be insulated with a wall thickness of at least ¾". A 1" thickness is required
in areas prone to hard freeze conditions. Above ground insulation must be protected from ultravio-
let degradation. All piping must be supported at a maximum interval of 10 feet and the piping sup-
ports must not crimp or compress the insulation.
COMMISSIONING THE SYSTEM
After the glycol loop has been charged and pressure is around 25 PSI (Check Gauge on Solar Heat
Exchanger) set the solar control to the desired settings. Solar controls come with default settings that
will work in most installations. If it is a cloudy day, you may have to activate the circulator pump. Once
the pump is running and the system is fully purged, set the control to the desired settings. It is
PART 3: PHOENIX SOLAR WATER HEATER INSTALLATION
(CONT’D)
n
CAUTION
The pressure in the glycol loop should not exceed 45 PSI when the system is in
operation on a sunny day. Contact your Solar Contrator if your collector loop exceeds
this threshold.
Summary of Contents for Phoenix
Page 1: ... Installation Operation Maintenance 2007 Heat Transfer Products Inc ...
Page 31: ...30 WIRING F INTERNAL WIRING PART 6 START UP PROCEDURE CONTINUED Phoenix Connector Diagram ...
Page 41: ...40 MAINTENANCE NOTES ...
Page 42: ...41 MAINTENANCE NOTES ...
Page 43: ...42 MAINTENANCE NOTES ...
Page 44: ... 2008 2007 Heat Transfer Products Inc www htproducts com LP 179 REV 4 5 08 ...
Page 68: ...23 ...
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Page 73: ...28 MAINTENANCE NOTES ...
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