Algas SDI Direct Fired F6-ASME, Руководство по эксплуатации и техническому обслуживанию

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Operation
Algas-SDI Operation and Maintenance Manual – P/N – 54000 7
1. Install a UL listed shut-off valve with a Minimum 250 psig gas pressure
rating.
2. Install a thermometer after the vaporizer shut-off valve.
3. Install the first stage regulator as close to the vaporizer as possible, but not
further than 24” from the outlet of the vaporizer. The outlet pressure of the
regulator should be set at 4 to 6 psig lower than tank saturated vapor
pressure at lowest expected temperature; this may require periodic
adjustment.
4. The second stage (or low pressure) regulator should be installed as close to
the consuming equipment as practical.
5. A line relief valve may be installed (optional) to protect the regulators from
excessively high pressure. If a line relief valve is used, set the blow pressure
at approximately 10 psig above the first stage regulator delivery pressure.
VAPOR BYPASS LINE -
see Figure 3
1. Install a primary (first stage) regulator at the vapor outlet on top of the
storage tank. Set this regulator to deliver gas at a pressure of 2 to 4 psi
below the setting of the vaporizer regulator. Then if the vaporizer is
overloaded or its output pressure drops off, the regulator on top of the
storage tank will automatically take over.
2. Run a line from the regulator and tie it into the vapor service line downstream
from the vaporizer first stage regulator.
3. Although vapor bypass line is not required for proper operation, it is
recommended for all installations.
BURNER SUPPLY LINE (OPTIONAL)
The vaporizer burners are supplied with vapor from the outlet of the vaporizer
where the least possibility of condensation will take place. In regions where
there is a problem with a high content of heavy ends in the LP gas, a separate
vapor supply line to the burner control on the vaporizer may be installed. If a
separate burner supply line is used, the following is recommended:
1. Disconnect the ¼” line at the burner regulator inlet.
2. Disconnect the ¼” line at the tee on top of the heat exchanger and plug it
with ¼ NPT plug.
3. Install a first stage regulator as close to the tank vapor outlet as possible. A
manual shut-off valve should be installed ahead of the regulator.
4. Connect the supply line from the first stage regulator to the burner regulator
at the vaporizer. Make sure that the supply is sized properly to handle
maximum input rating of the vaporizer burner(s). See
Figure 1
.
5. For the vaporizer Thermostat Supply Regulator pressure adjustments please
refer to page 3.
LIQUID PUMP (OPTIONAL)