Operation
5-4
Raising “HTF” Fluid to Set Temperature
First, make sure that none of the portable heat exchanger fans are in operation. The portable heat exchanger fans must be turned on in succession.
Cold Structure
•
Plug in the first portable heat exchanger fan and
verify that the fan is running.
•
With the first portable heat exchanger fan running,
monitor the “return temperature” gauge (8-1) at the
control panel.
•
When the “return temperature” gauge (8-1) rises
above 130°F, plug in another portable heat exchanger
fan.
•
Repeat the first 3 steps with another portable heat
exchanger until the “return temperature” gauge (8-1)
does not rise to above 130°F. At this point, the water
heater will be operating at full capacity and will be
unable to maintain the minimum temperature of
130°F
•
Disconnect the last portable heat exchanger fan and
the return temperature will again rise above 130°F.
As the Structure Warms Up
•
More portable heat exchangers may be added at a
later date as the temperature in the structure rises.
•
If more portable heat exchangers are added, repeat the
steps in the previous “Cold Structure” section.
8 - return temperature gauge
8-1
