FAFCO Drainback 200 Series, Руководство по установке

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9: System Operation
The control component of your FAFCO solar water heating system features state-of-the-art microprocessor technology
and many flexible features to maximize the effectiveness and utility of your solar water heating system, with special
emphasis on “user friendliness” and reliability for years to come.
Controller Operation:
The system will activate whenever the roof temperature is at least 10 hotter than the lower tank temperature. The
system will continue to operate automatically until the tank reaches the selected MAX WATER TEMP or the roof tem-
perature is only 4 degrees hotter than the lower tank temperature. At that time, the system will shut-off automatically,
the green SOLAR ON light will go off, and the WATER TEMPERATURE will continue to be displayed. The system will
reactivate whenever the roof temperature is at least 10 hotter than the lower tank temperature.
Solar Setting:
The SOLAR switch is normally set in the AUTO position, and should remain set this way for automatic operation. The
ON position is normally for installation and maintenance purposes only and should only be used to test the system.
The OFF position is for maintenance only.
Maximum Tank Temp Setting:
This switch permits the user to set a maximum storage tank water temperature. This will depend on household
requirements or safety concerns. If the water reaches the set maximum temperature during solar operation, the solar
system will shut off automatically. .
Operating Indicators
To determine if the system is operating properly and providing solar heated water, verify the top tank water temperature
is warm. For single tank systems, verify the top tank water temperature is higher than lower tank water temperature
when the system is activated.
If the circulation module is turned on
by this controller when no water is in
the system the pumps can be
permanently damaged.
POTENTIAL PUMP DAMAGE