Cleaning Heating Surfaces And Flue-Ways; Cleaning The Water Side Of The Boiler; Cleaning Float-Type Low Water Cut-Offs - Weil-McLain 4 Series Manual

mainTenanCe
Boiler Service and Maintenance, continued
1

Cleaning Heating Surfaces and Flue-ways

NOTICE
Do not brush or vacuum the firebox or combustion
chamber area of those boilers using fibrous
combustion chamber material.
2
NOTICE
Do not use stick-type thermal bombs in this boiler.
Soot is an effective insulator that prevents flue
gases from heating the boiler water as efficiently
3
as possible The frequency of cleaning will depend
upon the fuel used, the burner adjustments, boiler
temperature, draft conditions, and other job factors
1 Remove top or side jacket panels
2 Remove the flue-way opening covers
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3 Cover the burner and controls
4 Using a wire flue brush, thoroughly brush the flue-
ways at all angles
5 Remove any soot or scale from the horizontal and
vertical flue-ways
6 Remove the access panel and enter the boiler to
clean the combustion chamber with the special
5
flue brushes provided.
7 Clean the base of the chimney using a vacuum
cleaner or brush
8 Replace the flue-way opening covers, access
panels, and jacket panels Ensure the original
gas-tight seal is maintained
6
9 If additional cleaning is required, follow the steps
below
a Replace access panels and start the boiler
following all instructions in this manual
b Heat the boiler water to 180°F, then turn the
boiler off and disconnect electrical power and
fuel supplies
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c Remove the flue-way opening covers
d Use a garden sprayer or hose with nozzle and
spray the sooted flue-ways with a fine mist of
water
e The soot will become loosened and fall to the
floor of the firebox and around the horizontal
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flue-ways
f Remove the loosened soot
56
sTeam series
94

Cleaning the Water Side of the Boiler

1 If the water side of the boiler must be cleaned or
inspected, open the blowdown valve and drain
the boiler
2 Hose the inside of the boiler with high pressure
water to remove sludge and sediment, then flush.
3 Dry the boiler water side thoroughly, or refill with
fresh water and heat to release dissolved gases
Follow the procedures in this manual for filling the
system
IMPORTANT
Repeated draining and filling of the boiler or the
heating system can lead to the same consequences
as adding too much makeup water, and is the worst
with hard water.

Cleaning Float-Type Low Water Cut-offs

Accumulated sediment in the LWCO should be
flushed out through a blow-off valve provided for this
purpose; this should be done at least once a month
during heating system operation
boiler manual
4
550-100-157/0523