21
REGULATION
When the boiler has reached a sufficient pressure, the gate valve is opened to allow the steam to flow to the oil
heater. The air discharge gate valve on the condensation outlet piping must be opened slightly.
While the steam is being discharged from the slightly open gate valve, the pressure regulator is set to a value
allowing the fuel oil to be heated to a temperature a little higher (about 10 - 15° C) that the setting on the regulation
thermostat for the electric heater.
An initial setting can be carried out using the pressure reducer according to the value given on the pressure gauge.
If necessary, this setting must be corrected after checking the temperature of the fuel leaving the steam heater.
Steam pressure on the
pressure gauge bar
1
1.5
2
2.5
3
3.5
4
4.5
5
6
7
8
Approximate
corresponding
temperature °C
120
127
133
138
143
147
151
155
158
164
169
174
Once the adjustment has been completed, close the air discharge gate valve.
The (minimum and regulation) thermostats on the electric pre-heater must normally be set as described in the
chapter “Ignition and Regulation”.
SCHEMATIC LAYOUT FOR STEAM PRE-HEATER INSTALLED UPSTREAM
FROM THE ELECTRIC PREHEATER
N° BT 8576
