Table of Contents
Advertisement
1.
Pre-start Checkout
2.
Linkage Adjustments
3.
Fuel Cam Adjustments
4.
FGR Adjustment
5.
Burner Drawer Adjustments
6.
Single Fuel Setups
7.
Combination Gas and Pressure Atomized Oil
8.
Combination Gas and Air Atomized #2 Oil
9.
Gas Setup
10.
Pressure Atomized Oil Setup
11.
Air Atomized #2 Oil Setup
12.
Operating Control Adjustments
13.
Limit Tests
14.
Pilot Test
15.
Burner Shutdown
16.
Restart After Extended Shutdown
This section covers the startup and operating adjustments
of the Webster Model JBE(X) burner.
WARNING
BURNER STARTUP, COMBUSTION ADJUSTMENTS
AND LIMIT CONTROLS ADJUSTMENTS SHOULD
ONLY BE PERFORMED BY TRAINED AND EXPE-
RIENCED SERVICE TECHNICIANS. ATTEMPTING
TO PERFORM THESE FUNCTIONS WITHOUT THE
PROPER TRAINING AND EXPERIENCE CAN RE-
SULT IN EQUIPMENT DAMAGE, PERSONAL INJURY
OR DEATH.
Before proceeding with the startup and adjustment, be
sure that the overall installation is complete. Review the
boiler operating and installation manual, as well as all
control manuals to verify that all equipment is ready for
operation. These manuals must be read and understood
prior to starting the equipment.
If you are not qualified to service this equipment, DO
NOT TAMPER WITH THE UNIT OR CONTROLS. CALL
YOUR SERVICEMAN.
At the conclusion of the startup, document valve and
linkage positions, pressures and settings for future
reference.
READ AND SAVE THESE INSTRUCTIONS FOR
FUTURE REFERENCE.
1. Pre-Start Check List
Before starting the burner, a complete review of the
installation, wiring and piping of the burner, boiler and all
supporting equipment must be complete and all of these
items must be ready for operation prior to starting. The
following is a general review:
______All wiring is connected. Test pulls on wire show
them to be tight.
______All fuel lines are connected and tight.
______Pilot gas is connected.
JBE(X) Manual
F. STARTUP and OPERATING ADJUSTMENTS
Page 40
______Burner is mounted to vessel and floor, with all
bolts secured.
______The linkage is correct (in low fire position) and
tight.
______The stack is connected and routed to the outside.
Draft controls are installed and operational.
______Gas vent lines are connected and routed to the
outside.
______Do not start the unit unless all cleanout doors are
in place and secured.
______The vessel is completely installed, filled with
water and operating controls checked.
______Support equipment is in place and ready (feed
pumps, draft controls, steam/hot water systems, boiler
limits and controls and feedwater systems).
______A load must be available for the burner startup
and adjustment process. The burner must be operated
at high rates for extended periods of time and the load
must be capable of using this energy.
______A combustion analyzer with O2 and CO (for gas)
must be available to tune combustion. A smoke spot
tester must be available for oil firing. If this is a low NOx
burner, a NOx analyzer must be available. All of these
analyzers must be recently calibrated and able to provide
accurate readings.
______Other test equipment, including manometers,
gauges and volt meter shall be available.
______Manometer or gauge on the gas manifold.
______Manometer or gauge before and after gas pres-
sure regulator.
______Draft gauge or manometer (at stack outlet).
______Draft gauge or manometer for furnace pressure.
2. Linkage Adjustments
Adjusting the air damper and FGR control valve on a
linkage system requires an understanding of linkage set-
ups. The rate of change for the fuel valve, air damper and
FGR valve must be matched by how the linkage is setup.
If the air damper or FGR valve opens too quickly, the
flame may become unstable or the NOx levels may not
meet the requirements. There are a few general guide-
lines that should be followed in setting up the linkage of
a burner.
a. The linkage must provide the correct stroke of the
valve, from low to high fire. Increasing the length of the
drive crank arm (B) or decreasing the length of the driven
crank arm (C) will increase the valve travel. To reduce
valve travel, decrease B or increase C (Figure F-1).
Section F - Startup and Operating Instructions
Advertisement
Table of Contents
