Heat Transfer Phoenix, Installation & Operation Manual

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Installation Manual
recommended that the storage tank high limit set point is not set any lower the 160° F. A lower set point
could lower the performance of the solar water heater and could cause over heating of the collector
system. You must install an anti-scald valve on the hot water outlet as temperature within the storage
tank can cause injury – please see warning below on temperature outlet temperature restriction.
PART 4: MAINTENANCE
A properly maintained solar water heating system can provide years of dependable trouble free
service. It is suggested that a routine preventive maintenance program be established and followed
by the end user with his contractor. Below is the maintenance check list that outlines the primary
components of the solar system that need to be inspected annually.
1. HTF Glycol - It is very important that the quality of the HTF Glycol is maintained to avoid
damage to the collector loop and related components which come in contact with the fluid.
See the Dow Frost data sheet located in the back of the manual for further details.
2. Water Quality can effect the operation of the solar heat exchanger over time. In very hard water
areas, it is recommended you drain (#14) a few gallons from the water to keep the bottom of
the water heater free of sediment.
3. Clean and inspect the solar collector (#1). Dirt or film which may have settled on the surface
and may affect the performance. Check Collector supplier for cleaning procedures.
4. Check Insulation for deterioration.
5. Check Solar Tank Sensor to assure that they are secure and have not moved or loosened.
6. Inspect the T&P (#19) on the water heater. Lift the release handle lever and make sure
discharge is directed to an open drain.
7. The area near the water heater must be kept free of flammable liquids such as gasoline, paint
thinners, adhesive or other combustible materials.
SHUT DOWN PROCEDURES
The Solar System is designed to be easily isolated for emergency repairs or routine maintenance.
To isolate the water heater simply shut down supply water shut off valve (Number #21) which iso-
lates the water heater from the pressurized cold water supply.
The collector loop can be isolated from the solar storage tank by closing (#6 and #11). If the pres-
sure in this loop drops or you find a glycol leak, shut these valves and contact your installation con-
tractor. Turn the circulating pump off on your solar control.
VACATION SHUT DOWN
Solar water heaters can build up very high temperatures when there is no daily draw on the system.
The best way to dissipate heat in the system is set the control to run your circulator pump 24 hours
PART 3: PHOENIX SOLAR WATER HEATER INSTALLATION
(CONT’D)
n
DANGER
Water temperature over 125 degrees F. can cause severe burns
instantly, or death from scalds. Children, disabled, and elderly
are at highest risk of being scalded. See instruction manual
before setting temperature at water heater. Feel water before
bathing or showering! Temperature limiting valves are available.