Chapter 2 — Burner Operation and Control
Part No. 750-184 2-3
The burner control circuit operates on 115 volt, single phase 60 Hz
(or 50 Hz when equipped) alternating current. The forced draft fan
motor is generally operated on 3-phase service at the available main
power supply voltage.
Indicator lights signaling load demand, fuel valve, low water, and
flame failure conditions are standard equipment.
In addition to the standard basic controls supplied, other devices
may be required to meet specific requirements of an insurance
carrier or local code. Refer to the Wiring Diagram (WD) prepared by
Cleaver-Brooks for your specific installation to determine the
specific controls in the burner and limit control circuits.
Figure 2-2 Controls/Components Common to All Boilers
1,2
3,4
5
6
7
8
9
10
1. Forced draft fan motor
2. Forced draft fan
3. Mod motor
4. Mod motor transformer
5. Combustion air proving switch
6. Junction box
7. Control panel
8. Flame Scanner
9. Ignition transformer
10. Ignition cable
11
11. Pressure gauge
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