Gas System - CleaverBrooks CBEX Elite Operation And Maintenance

2.3 — Gas System
Component
7. Control panel
8. Entrance box
9. Gas train
10. Oil system
The flame detector portion of the control monitors both oil and gas flames and provides protection in the event of
loss of a flame signal.
The control recycles automatically during normal operation, or following a power interruption. It must be manu-
ally reset following a safety shutdown caused by a loss of flame. An internal checking circuit, effective on every
start, prevents burner operation in the event anything causes the flame relay to hold in during this period.
2.3 — Gas System
Depending upon the requirements of the insurance carrier or other governing agencies, the gas flow control sys-
tem, or gas train, may consist of some, or all, of the following items. Refer to the Dimension Diagram (DD) pre-
pared by Cleaver-Brooks for the installation.
Item numbers refer to the table following the illustrations.
1
Pilot Gas Train
FIGURE 2-2.
750-368
CBEX Elite 100-1200 HP
Houses the touchscreen HMI and boiler control system. Controller automatically
programs each starting, operating, and shutdown period in conjunction with oper-
ating limit and interlock devices. Includes, in a timed and proper sequence, the
operation of the blower motor, ignition system, fuel valve(s), damper, and FGR.
The sequence includes air purge periods prior to ignition and upon burner shut-
down.
Houses high voltage equipment including motor starters and fuses.
See 2.3
See 2.4
3
4
2
Description
2-3