R016600x

Supplement II

2.1.7 Steam Coil Heater When sufficient steam becomes available the steam heater raises the fuel temperature to the proper value. A Temperature Control Valve is used to respond to the temperature of the incoming oil. This valve is set to maintain the fuel oil at the predetermined value (see chart R-8571). Steam that con- denses inside the coil is discharged through a steam trap and must be piped to waste to avoid contamina- tion

NOTE All heavy oil fired units must be started and stopped using light Fuel Oil, #2 diesel.

2.1.8 Exhaust Stack The heavy oil-fired, steam generator exhaust stack should be free standing, with a side inlet and an ash collector. The first stack section attached to the machine must be removable. It should also have an access door for water washing and a port for a thermometer. Any stack section that is inside the building should be insulated to reduce radiant heat loss and noise from vibration. The stack should be constructed of stainless steel for longevity. A vertical stack height over thirty feet may require a barometric damper.

SII-7

04/22/2015

Supplmt02_HeavyOil_c.fm