19A SERIES BOILER
INSTALLATION INSTRUCTIONS
19. OWNERS INSTRUCTIONS
A.
For best performance of the boiler, the following
suggestions should be performed by a qualified boiler room
technician, through a regular program of maintenance and
adjustment to obtain the following.
1. Oil burner combustion: 12 to 12 1/2 + % CO2, zero smoke,
smooth lightoff and operation.
Gas burner combustion: 10 to 10 1/2% CO2, 0.02% CO,
smooth lightoff and operation.
2. Keep boiler fireside surface clean. Flue gas temperature
reading above 450°F over boiler room temperature signals
the start of soot accumulation. Inspect at least twice each
year.
3. Steam boiler water condition should be observed. Unstable
water line, system steam hammer indicate dirty water.
Blow-down is recommended. However, the introduction of
excess raw water to a steam boiler can result in the deposit
of scale and inefficient operation of physical damage to
the boiler.
4. Float operated and probe type low water cutoff devices
should be maintained according to the instructions of the
manufacturer.
5. Limit control function should be checked on a regular basis.
6. Flame safeguard controls should be checked regularly.
B.
The products of combustion must be conducted to the
outdoors by means of a metal connector of at least the same
size as the boiler smokehood outlet and a chimney or stub-
stack. The boiler is constructed for pressurized operation
and the burners are selected for operation against a back
pressure of 0.10 ins. w.c. at the boiler outlet. If the actual
conditions cause a back pressure in excess of 0.10 ins. w.c.
at the boiler outlet, consult the Smith Co. for verification of
burner size. If the chimney has the ability to develop excess
draft, a barometric draft control should be installed in the
chimney. Check with the Smith representative for assistance.
18. CLEANING BOILER WATERWAYS
A.
STEAM BOILERS
NOTE
The boiler should be cleaned before connecting system
piping and installing steam trim.
1. Plug unused openings all around the boiler leaving a valved
overflow pipe connected to the safety valve tapping. Also
provide a valved blow-down connection to one of the
bottom tappings.
2. The fuel burning equipment should be installed and made
ready to operate in accordance with the burner instructions.
3. Fill the boiler with water to the middle of the upper port,
adding a boiler cleaning compound, as recommended in
A.S.M.E. Section VI.
4. Fire the boiler for at least one hour at a low rate to
circulated the cleaning compound through the boiler.
5. Blow off surface of boiler water through skimmer connection
or through safety valve opening by feeding clean water
into the boiler through a bottom fill connection.
6. When the water coming off the surface runs clear, shut off
the burner, close the top valve and open the bottom blow-
down valve. If there is a slight steam pressure in the
boiler, it will assist the blow-down.
7. When the sections have cooled after blow-down, flush the
interior of the boiler from the top by introducing water from
a hose through the top port. When the water runs clear,
complete the system piping, install the steam trim and
controls. Fill the boiler with clean water. Heat the boiler
water to at least 180°F to release corrosive gases.
B.
WATER BOILERS
NOTE
The system piping should be completed before cleaning
the boiler.
1. Add an approved boiler compound. Follow the compound
manufacturer's instructions for best results. Fill the system
and vent air wherever necessary.
2. Heat the water to at least 180°F and circulate through all
the piping system. After about one hour, drain the system
thoroughly. Wash the interior of the boiler with a hose
inserted through the top tapping. When blow-down water
runs clean, allow boiler to cool, then fill the system with
clean water.
3. Heat the water up to about 180°F and vent air as necessary
to purge the system. The boiler is now ready to operate.
PAGE 9
