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13
1
st
flush
IN
1
st
flush
OUT
2
nd
flush
IN
2
nd
flush
OUT
Top FRONT
Use one of the methods pictured below to flush the heat exchanger
OK
OK
OK
NOT OK
Flushing the heat exchanger
o
Flush water through the heat exchanger as directed below using warm water from i) a
shower head ii) garden hose iii) pressure washer
o
After the 1st and second flush, flush water in the reverse direction in the same manner,
i.e Front -top and bottom & back side top and bottom
Some visible dirt and stains will remain –
DO NOT BRUSH OR SCRUB the copper wire
Blast flush water down behind the
air guide up and down and on
both sides