Chapter 2 — Burner Operation and Control
Part No. 750-184 2-13
properly maintain the required fuel oil temperature. The regulator
and the pressure gauge are not furnished on 15 psi units.
11.Steam Heater Solenoid Valve: A normally open solenoid valve
opened by the steam oil heater thermostat to allow flow of steam
to the steam heater to maintain temperature of fuel oil.
12.Steam Pressure Gauge: Indicates steam pressure entering the
heater.
13.Oil Relief Valve: Allows release of excessive pressure to the
return side of the oil line piped to the tank.
14.Low-Oil-Temperature Switch: Thermostatic switch that prevents
burner from starting, or stops burner firing if fuel oil temperature
is lower than required for oil burner operation.
15.Oil Supply Pressure Gauge: Indicates fuel oil pressure in the oil
heater and supply pressure to the fuel oil controller’s pressure
regulator.
In addition to the components of the fuel oil controller mentioned in
Section E, the following are used with a heavy oil fired burner.
A. High-Oil-Temperature Switch (Optional): Switch contacts open when
fuel oil temperature raises above a selected temperature. Switch will
interrupt the limit circuit in the event fuel oil temperature rises above
the selected point.
Figure 2-15 Oil Heating Assembly (Steam)
1. OIL HEATER (ELECTRIC)
2.
OIL HEATER THERMOSTAT (STEAM)
3.
OIL HEATER THERMOSTAT (ELECTRIC)
4.
OIL HEATER SHELL
5. OIL RETURN TO TANK
6. OIL INLET FROM TANK
7. CHECK VALVE
8. STEAM TRAP
9. CHECK VALVE
10. STEAM HEATER PRESSURE REGULATOR
11. STEAM HEATER SOLENOID VALVE
12. STEAM PRESSURE GAUGE
13. OIL RELIEF VALVE
14. LOW OIL TEMPERATURE SWITCH
15. OIL SUPPLY PRESSURE GAUGE
16. OIL RETURNED FROM FUEL OIL CONTROLLER
17. HEATED OIL TO BURNER
18. FUEL OIL STRAINER
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