Front Head And Panel - CleaverBrooks CBEX Elite Operation And Maintenance

The burner control circuit operates on 115 volt, single-phase 60 Hz (or 50 Hz when equipped) alternating cur-
rent. The forced draft fan motor is generally operated on 3-phase service at the available main power supply volt-
age.
2.2 — Front Head and Panel
Front head, control/entrance panel, and additional components associated with the combustion process are
described below. Boilers with optional features may have components not listed here.
3
3
9
3
CBEX Steam Boiler
FIGURE 2-1.
Component
1. Forced Draft Fan Motor
2. Forced Draft Impeller
3. Actuators
4. Ignition Transformer
5. Flame Detector
6. Stack Thermometer
2-2
3
10
5
4
Drives forced draft fan directly to provide combustion air. Also referred to as a
blower motor.
Provides all air, under pressure, for combustion of pilot fuel and main fuel, and for
purging.
Independent actuators for fuel, air, and FGR operate to provide proper air/fuel
ratios under all boiler load conditions.
Provides high voltage spark for ignition of gas pilot or light oil pilot.
Monitors gas or oil pilot and energizes the programmer flame relay in response to
a flame signal. It continues to monitor main flame (oil or gas) after expiration of
pilot providing period. A standard equipped boiler has a lead sulfide (infrared sen-
sitive) detector.
Indicates temperature of vented flue gases.
2
1
Description
CBEX Elite 100-1200 HP
Burner and Fuel System
6
7
8
750-368