Sussman ES Installation, Operation And Maintenance Manual - page 11
Sussman Boilers
Installation, Operation & Maintenance Manual
11
Operation
With main disconnect “OFF”
tighten all electrical connections
before energizing boiler to prevent arcing, car-
bonizing 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 con-
tactor(s) will energize.
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 concentrations of minerals etc.) we recommend a consultation with a rep-
utable 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” posi-
tion, 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 blow-
down tank, consult with local plumbing codes regard-
ing 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.
NOTE:
THE USE OF CHEMICAL BOILER CLEANING
COMPOUNDS IN THESE BOILERS VOIDS ALL WAR-
RANTIES. SOME COMPOUNDS CAN/WILL DAMAGE
INCOLOY SHEATHED HEATING ELEMENTS AND
SHORTEN THE LIFE OF THE ELEMENTS.
AUTOMATIC BLOWDOWN INSTRUCTIONS
(PN ES81600)
1” NPT, Starts, stops and blows down the boiler auto-
matically, utilizing a programmable time clock a time-delay relay
and motorized ball valve.
If the blowdown valve is plumbed into a blow-
down tank, the boiler can be discharged at operating 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 automat-
ic 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 blowdown is acti-
vated. A red pilot light over the time clock will come on and
remain on while the motorized ball valve is open. The time dura-
tion 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.
!
CAUTION
6.
Boiler steam pressure will gradually increase to the
operating pressure control set point, at which time
the contactor(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.
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 automat-
ically during boiler operation.
9.
The boiler should be blown down daily. (See blow-
down instructions.)
!
CAUTION