Gas Fired Boiler
Harsco Industrial, Patterson-Kelley Technical Service 1.877.728.5351
30
3.7.4 Flushing and Filling
Water Quality
The boiler’s heat exchanger is made of stainless steel. The heat exchanger requires proper water conditions
to remain efficient and function properly. For information, please refer to Harsco Industrial Patterson Kelley
Multi- Metal Systems Water Quality Standards as it appears in
Appendix 3
as this applies to the warranty of
your heat exchanger.
3.8 Pre-Start Checklist
Before attempting to start the boiler, make sure the following
items have been completed.
1. Inspect the gas train, blower, ignition electrode and boiler in general to
be sure there was no damage during shipment or installation.
2. Flue gas from the boiler is properly vented.
3. Gas connection has been made, pressure tested for leakage and the
line purged of air. Make sure all required vents have been installed.
4. Water connections are complete and the boiler and system have been
filled and purged of air.
5. The boiler is connected to the correct electrical power source listed on
the nameplate, a disconnect having adequate overload protection is
required.
6. Combustion air openings are not obstructed in any way and have
adequate capacity.
7. The boiler is placed the proper distance from any combustible walls.
8. Relief valves have been piped to an acceptable drain at a safe point of
discharge.
9. Condensate piping is properly connected.
10. Verify system water quality is within specifications.
3.9 Safety Checks
The following checks of safety systems must be made before putting
the boiler into normal operation.
Before firing the boiler refer to
Section 4
for information on the use of
the controls, lighting, and shut-down procedures.
3.9.1 Ignition Safety System Test
Test the ignition system safety shutdown as follows:
1. Cycle the boiler on by generating a heat request. (The method for
this will depend on your boiler configuration.)
2. During the pre-purge cycle (before ignition), smoothly close the
downstream manual isolation valve (inside the boiler cabinet) to
reduce the gas flow.
3. Closing the manual isolation valve will prevent a successful
ignition, and the NURO will display either:
109:
“Ignition Failed”
110:
“Ignition Failure Occurred”
These alarms indicate an ignition failure and the lockout will remain until the control is reset.
After completing
this test, turn the boiler off, open the downstream manual isolation valve, then turn the boiler back on.
Never attempt to operate a boiler
that has failed to pass all the safety
checks described below.
Operating a boiler that has failed a
safety checks could result in injury.
Bypassing safety mechanisms will
result in unsafe boiler operation
which could result in injury or
death.
After checking controls by manual
adjustment, make sure they are
always reset to their proper
settings.
N
OTICE
!
If the expected error code(s) do not
appear, call for qualified service.
The user should become
thoroughly familiar with the
operation of the boiler and controls
before attempting to make any
adjustments.
Changing parameters requires an
understanding of the parameters
and the functionality of the boiler.
The boiler may not function
properly if parameters are changed
from the factory values.
Summary of Contents for SC-2000
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