Initial Cleaning, Steam Boilers; Initial Cleaning, Water Boilers - Burnham 4FHL-63A Installation And Operating Instructions Manual

A. Check Operating Control Raise and lower
operating control setting as required to start and
stop burner.
B. Warning Check High Limit Control
Jumper Operating Control Terminals. Allow
Burner to operate until shut down by limit.
Installation is not considered complete until this
check has been made. REMOVE JUMPER.
C. Check Low Water Cut-Off control with water
level at normal waterline. Raise operating control
setting to allow burner to operate. Open boiler
drain to allow water level to drop until burner
operation is shut down by low water cutoff.
DO NOT ALLOW THE BOILER TO OPERATE BELOW THE
MINIMUM PERMISSIBLE WATER LEVEL AS INDICATED
ON THE BOILER.
NE PAS LAISSER LA CHAUDIÈRE FONCTIONNER
LORSQUE LE NIVEAU D'EAU EST PLUS BAS QUE LE
SEUIL INDIQUÉ SUR LA CHAUDIÈRE.
Close boiler drain and refill to normal water line.
Unless boiler is equipped with a manual reset low water
cutoff, burner should automatically restart during fill.
Reset operating control.
PROBE AND FLOAT TYPE LOW WATER CUT-OFF
DEVICES REQUIRE ANNUAL INSPECTION AND
MAINTENANCE. Refer to Service Instructions,
Section IV for proper cleaning instructions.
LES INTERRUPTEURS À BAS NIVEAU D'EAU DE
TYPE SONDE ET DE TYPE FLOTTEUR DOIVENT ÊTRE
INSPECTÉS ET ENTRETENUS ANNUELLEMENT. Se
reporter aux directives sur l'entretien, à la section IV,
pour connaître les directives de nettoyage adéquat.
D. Check Operating Control on boiler equipped
with a tankless heater. With burner off, draw hot
water until burner starts, then turn off hot water
and check burner shut down.
5. CLEANING A NEW STEAM BOILER
Oil, grease & sediments which accumulate in a new
boiler and piping must be removed from the system in
order to prevent an unsteady water line and carryover of
the water into the supply main above the boiler. Operate
the boiler with steam in the entire system for a few days
allowing the condensate to return to the boiler. If the
condensate can temporarily be wasted, operate the
boiler only for the length of time it takes for condensate
to run clear. If the latter cannot be achieved or if the
condensate is returned to the boiler, boil out the boiler
using the SURFACE BLOWOFF connection on the
boilers so equipped.
A. Drain boiler until water is just visible in gauge
glass. Run temporary pipe line from the surface
blow-off to an open drain or some other location
where hot water may be discharged safely.
Do not install valve in this line.
Certain state and local codes may restrict
the use of some chemicals listed for cleaning
and maintaining the boiler. Check with local
authorities before proceeding with the use of
any chemicals.
B. Drain about 5 gallons of hot water from boiler into
a container and dissolve into it 1 pound o caustic
soda and one pound of trisodium phosphate
for each 50 gallons of boiler water. Additional
containers may be required to dissolve sufficient
chemicals for large models. Remove safety valve
and add solution to boiler water through exposed
tapping.
Use extreme care in handling these chemicals.
Caustic soda is harmful to skin, clothing and
eyes. Do not permit the dry material or the
concentrated solution to come into contact with
the skin or clothing.
C. Close all valves leading to and from the system to
isolate the cleaning solution from the system.
D. Start Burner and operate sufficiently to boil the
water without producing steam pressure. Boil for
about 5 hours. Open boiler feed pipe sufficiently
to permit a steady trickle of water from the
surface blowoff pipe. Continue this slow boiling
and trickle of overflow for several hours until the
water coming from the overflow is clear.
E. Stop burner and drain boiler in a manner and
location that hot water can be discharged safety.
F. When the boiler has cooled to 120°F or less refill
boiler to normal water line. If water in gauge glass
does not appear to be clear, repeat steps A thru
E, boiling out the boiler for a longer time.
G. Remove temporary piping, plug tapping and/or
reinstall safety valve. Boil to bring water
temperature to 180ºF promptly in order to drive
off any dissolved gases in the fresh water.
6. CLEANING A WATER BOILER
The oil and grease which accumulate in a new hot
water boiler can be washed out in the following manner.
A. Remove safety relief valve using extreme care to
avoid damaging it.
17