43
Annual Shut Down Procedure (End Of Each Heating
Season)
Follow the instructions in “WHAT TO DO IF YOU SMELL
1.
GAS” on page 23.
If heating system is to remain out of service during
2.
freezing weather, and does not contain antifreeze,
drain system completely. If boiler will be exposed
to freezing temperatures, drain condensate lines.
Otherwise, do not drain system or boiler.
Annual Examination And Cleaning Of Boiler
Components
Examine fl ue passages. Remove blower assembly from
1.
casting. Follow procedure for examining and cleaning
burner is described below.
Any buildup of sediment or aluminum oxide (white powdery
or fl aky substance) in fl ue passages must be cleaned as
follows:
Remove jacket front and top panels.
A.
Confi rm manual gas valve is closed and disconnect
B.
gas line to gas valve at union.
Disconnect wires to gas valve and igniter.
C.
Remove air inlet assembly from gas valve.
D.
Loosen, do not remove fi ve nuts attaching blower
E.
adapter assembly to boiler.
Remove two igniter screws. Carefully remove
F.
igniter. Do not touch igniter element with your
fi ngers or hands as oils or debris will cause
premature failure.
Remove fi ve nuts and blower adapter assembly.
G.
Remove burner and gaskets.
Aluminum oxide deposits are water soluble and
H.
may be rinsed away with spraying or running
water.
Use fl exible handle nylon brush to loosen sediment
I.
and aluminum oxide on all exposed heating
surfaces of boiler. Take care brush does not get
stuck in heat exchanger.
After brushing and rinsing, remove any remaining
J.
loosened sediment using vacuum with snorkel
attachment.
Inspect burner for foreign matter in fl ame ports
K.
or inside burner. Remove any foreign matter by
blowing with compressed air or vacuuming.
Install burner and gaskets. Position blower adapter
L.
assembly over studs. Install fi ve nuts, do not
tighten. Install igniter and igniter gasket and fasten
with two screws. Do not touch igniter element with
your fi ngers or hands as oils or debris will cause
premature failure. Tighten fi ve nuts holding blower
adapter assembly.
Connect gas line to gas valve; air inlet assembly
M.
to gas valve (using 2” x 1½” fl exible coupling);
pressure switch hose to gas valve and air inlet
assembly; 2” fl exible coupling to boiler exhaust
port; igniter wires; and gas valve wires.
Visually inspect condensate trap. Clean out any visible
2.
foreign material or debris from condensate lines as
described below.
Inspect for sediment or blockage.
A.
Flush out with water or vacuum.
B.
Follow instructions in “Near Boiler Piping” on page
C.
8,
for fi lling condensate trap with water.
Inspect fl ue connector using following steps.
3.
Loosen clamp on draft inducer end of 2” fl exible
A.
coupling connecting vent tee to exhaust port.
Inspect interior of vent tee. Clean any buildup of
B.
sediment on inside surface.
Connect 2” fl exible coupling to draft inducer outlet.
C.
16 - MAINTENANCE AND CLEANING
DANGER
Before servicing, turn off electrical power to boiler at
service switch. Close manual gas valve to turn gas supply
OFF to boiler. Failure to comply will result in death or
serious injury.
!
NOTICE
Perform regular service and maintenance by
qualifi ed service agency at least once every
12 months to assure safe, trouble free opera-
tion and maximum effi ciency.
NOTICE
Verify proper operation after servicing.
WARNING
Following service procedures must be performed
by qualifi ed service agent. Boiler owner shall not
attempt these steps. Failure to do so could result in
death or serious injury.
!