Specifications

Armstrong International
IOM-706
Flo-Direct Water Heater
Page 17 of 45
Water Connections
Water Connections
Transfer pump assembly must
be installed on level surface
and at or below heater level to
maintain pump's prime.
Inlet water pipe must be at
least as large as heater's
water inlet piping. Maximum
recommended water velocity
is 9 ft/sec in inlet piping.
Suction hose between
heater and transfer
pump must be flexible
to isolate vibration.
Line from transfer
pump must be routed
to top of storage tank
to prevent backflow.
If large pressure swings
occur, install pressure
regulating valve in inlet
water line.
Lower canister
Storage tank
Note: Incoming water must not
contain any chloride compounds
above 100 ppm or salts. These
will destroy 304 stainless steel.
(Alternative metals are available.)
Warranty is void unless clean,
potable water is used.
Line from transfer
pipe must be at least
as large as transfer
pump pipe.