Set-up
16
Flushing of Existing Piping
Legend
Return
Supply
Gas pipe
Air vent (field supplied)
Circulating pump
Pressure relief valve
City water
Diaphragm expansion tank
Drain
Floor drain
Pressure gage
Vent connection
Before boiler is connected to a
piping/heating system which has
previously been in s ervice (the ECV is a
replacement boiler), the piping system
should be flushed thoroughly with
water in order to remove sludge or
other contaminants, especially in
large piping systems such as old gravity
pipe systems. Flush from the top of the
system with city water pressure. Failure
to flush out s y s t em can lead to deposits
in boiler resulting in boiler failure. This
type of failure is not covered under
warranty.
Typical boiler piping is shown in Fig.5.
The following list s typical water flow
rates for the ECV boiler series:
Model
Flow rate
(GPM) for
20°F rise
Flow rate
(GPM) for
30°F rise
ECV-65 5.3 3.5
ECV-80 6.6 4.4
ECV-100 8.3 5.5
ECV-115 9.5 6.3
ECV-140 11.6 7.7
ECV-155 12.8 8.5
ECV-180 14.9 9.9
ECV-200 16.6 11.0
The water pressure drop for
ECV-65 to -200 is:
GPM
Pressure drop (ft. of water)
10 .33
15 .60
20 1.20
5167 450 v1.4
Fig. 5
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