Coil Tube Boiler Operator's Manual: Models CB-200-CTB, CB-350-CTB, and CB-500-CTB
6-1
SECTION 6: STARTING AND ADJUSTING THE BURNER
Understanding Burner Startup and Adjustment
ATTENTION:
Before starting the burner, you must fill the coil tube boiler with water.
Refer to
Section 10 in this manual for more information on the hydronics system.
DO NOT bypass the CTB
controls to operate the burner!
FOR DUAL-STACKED UNITS ONLY:
Clean Burn recommends that you complete burner startup and
adjustment for one burner before starting the second burner.
Starting and adjusting the burner involves a series of separate procedures which must be accomplished
in sequence without interruption. Review all the procedures before attempting burner startup and
adjustment, paying careful attention to safety information statements.
The following procedure should be performed prior to burner startup to ensure that all key components
of the hydronics system are functioning properly. Ensure that air is purged from the system. If the CTB
circulator becomes air-bound, it will not produce sufficient flow to activate the flow switch, and the
burner will not start properly.
1.
Turn the load temperature controller (i.e. thermostat or aquastat) OFF.
2.
Set the operating aquastat (on the CTB) at 180 to 200
o
F
.
Preparing the Hydronics System for Burner Startup
Preparing the Burner for Startup
1.
If you have not already done so, disconnect one wire from the terminal block at the "thermostat"
connection. (This prevents the burner from running.) A wiring diagram is provided in
Appendix B.
2.
Turn the main power to the CTB ON (the green power light on the burner should be ON).
3.
Wait at least 15 minutes until the preheater block is thoroughly warmed up. (Feel the back of
the burner box to make sure the preheater is sufficiently warm. The proving switch on the
preheater block will not allow the burner to start until the block is at least 120
o
F
.)
NOTE:
The preheater block will remain warm as long as power is supplied to the burner. If the
main power supply is ever turned OFF, you must wait at least 15 minutes until the preheater
block is thoroughly warm before starting the burner.
(Continued)
Summary of Contents for CB-200-CTB
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