lp-445-r4 Rev. 006 Rel. 027 Date 7.21.20
56
g. Turn boiler power back on and create a heat demand. When
boiler is lit observe condensate flow from the boiler. Be sure the
boiler is operating properly.
h. Reconnect the condensate piping to the outside condensate
connection.
Do not use solvents to clean any of the burner components. The
components could be damaged, resulting in unreliable or unsafe
boiler operation, substantial property damage, severe personal
injury, or death.
Figure 31 - Heat Exchanger Detail
C. Cleaning Water Side of Heat Exchanger
1. Make sure power is
turned off to the boiler.
Run water through the
hot water system to
ensure it is below room
temperature.
2. Close isolation valves
on the return and supply
connections to the
boilers as shown in the
piping diagrams in this
manual. Slowly open the
ball valves and release
pressure into a bucket.
Once pressure is released,
connect a hose to the
water line to flush the
boiler. Scale removing
solution may be used, but
must be approved for use
with stainless steel and
FDA approved for use in a
potable water system.
3. Thoroughly flush the
heat exchanger before
commissioning the unit
back in service.
