Sussman ES Installation, Operation And Maintenance Manual - page 11
Operation
With main disconnect “OFF” tighten all
electrical connections before energizing boiler to prevent
arcing, carbonizing of contact and/or overheating
1. Set the desired operating pressure and differential pressure
on the operating pressure control.
2. Set the high limit pressure control. (Recommended to be
10 psig above the operating pressure setting.)
3. Turn on water supply.
4. Turn main disconnect switch on.
5. Turn boiler control switch on. The water feed will begin
and continue until the water level reaches half way up the
gauge glass. The water feed will automatically shut off and
the contactor(s) will energize.
6. Boiler steam pressure will gradually increase to the operat-
Installation, Operation & Maintenance Manual
Blowdown
A daily blowdown is an essential part of boiler operation.
It is the best and most important part of preventative
maintenance you can give your boiler and will add years
of life to the unit. Make sure a blowdown schedule is
established and followed regularly.
In extremely hard water areas, blowdown may be necessary
more than once a day. If there is a particular problem
that applies to your local water condition (i.e. high concentra-
tions of minerals etc.) we recommend a consultation with a
reputable local water treatment-engineering firm. Pre-treating
the boiler feed water may reduce mineral accumulation
enough to allow a daily blowdown to be sufficient.
MANUAL BLOWDOWN INSTRUCTIONS
1. At the end of the working day, while boiler is still operating,
turn boiler main switch to the “OFF” position, close water
supply valve and open disconnect switch.
2. If blow down valve is plumbed into a blowdown tank, the
boiler can be discharged at operating pressure.
3. If the blowdown valve is not plumbed into a blowdown tank,
consult with local plumbing codes regarding boiler discharge.
4. When discharge is complete and boiler is drained, close the
blowdown valve, open the water supply valve, turn boiler
main switch to “ON” position and close disconnect switch.
5. When refilling is complete, turn off the boiler unless further
operation is needed.
6. If boiler is equipped with a “Manual Re-set Auxiliary Low
Water Cut-off” (as required in some states) the re-set button
must be pushed before the boiler will begin developing
steam. Do not push re-set button until the boiler has refilled
with water.
AUTOMATIC BLOWDOWN INSTRUCTIONS
(PN ES81600) 1” NPT, Starts, stops and blows down the
boiler automatically, utilizing a programmable time clock
a time-delay relay and motorized ball valve.
If the blowdown valve is plumbed into
a blowdown tank, the boiler can be discharged at operat-
ing pressure. If the blowdown valve is not plumbed into a
blowdown tank, consult with local plumbing codes
regarding boiler discharge.
NOTE: The manual valves from the boiler drain and the
lower float control equalization tube must be fully open
for the automatic blowdown to be effective.
1. Program time clock by setting the time boiler is to turn
on and off daily. (Refer to instructions in time clock
insert.)
2. When the time clock turns the boiler “off” the blow-
down is activated. A red pilot light over the time clock
will come on and remain on while the motorized ball
valve is open. The time duration the valve is open is set
by an adjustable potentiometer built into the time delay
board. The water level in the boiler after blowdown is
complete, will be approximately at the lower gauge
glass valve. (Elements are not exposed to air between
operations.)
3. Boiler will automatically refill at next programmed on
cycle.
Blowdown program can be overridden to allow for
unscheduled blowdown or operational cycles. Refer to the
time clock instruction insert.
ing pressure control set point, at which time the con-
tactor(s) will de-energize.
7. With steam demand, the boiler steam pressure will
decrease. When the boiler pressure has dropped below
the operating pressure control differential set amount,
the contactor(s) will re-energize.
Note: Adjust steam outlet valve such that the boiler pres-
sure does not drop more than 20% below reset.
8. The boiler is equipped with float type liquid level con-
trols employing micro switches. They are extremely
sensitive and reliable and will maintain the proper
water level within the boiler pressure vessel automati-
cally during boiler operation.
9. The boiler should be blown down daily. (See blow-
down instructions.)
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