Armstrong International
IOM-706 V2.0
Flo-Direct Water Heater
Page 25 of 45
Operation
Description of Operation
Very efficient heat
exchange keeps exhaust
within a few degrees
of incoming water
temperature.
Water is dispersed
into upper canister
and is broken into
ever smaller droplets
by passing down
through palls.
Air and gas combine in burner
and enter dry flame tube, which
enables complete combustion
producing no undesirable gases.
System operation is
controlled by float
switches in remote
storage tank (not shown).
Water is heated as
combustion gases
pass up through
palls and out of
heater.
Temperature of
outgoing water
must be adjusted
by manually
changing volume of
incoming water.
Hot water
collects in
lower canister.
Pump runs
continuously
during heating
cycle.
Water level is controlled
by four float switches in
standpipe connected to
bypass loop.
