Algas SDI Direct Fired 120/60H, Operation & Maintenance Manual

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Installation
2-8
Algas-SDI Operation and Maintenance Manual
– P/N - 52642
BURNER REGULATOR SUPPLY LINE (OPTIONAL)
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 regulator 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).
LIQUID PUMP (OPTIONAL)
The liquid pressure to the inlet of the vaporizer must be a minimum of 6 psig (0.4
bar) higher than desired discharge pressure. If tank pressure cannot meet this
requirement, install a pump in the liquid line under the storage tank to maintain
the minimum pressure.
ECONOMY INSTALLATION (OPTIONAL)
A vaporizer with economy operation draws vapor from the tank as the primary
source and utilizes the vaporizer only when needed. The intent is to allow the
most economical operation and eliminate energy waste. For the Economy Valve
field installation kit, use P/N 41051. The valve modulates open and closed as the
tank pressure rises and falls. The Economy Valve is a mechanical device and
requires no electricity to operate. Make sure the Economy Valve is correctly
installed. Verify the flow direction on the rating plate during installation. Contact
Algas-SDI for set-point information.
CONTAMINANT SEPARATOR
– FILTAIRE (OPTIONAL)
FILTAIRE is a filtering device designed to trap heavy hydrocarbons commonly
present in LPG gas vapor. It also traps other materials, which may be in the gas
due to storage conditions and internal condition of the equipment.
Impurities are collected in the system and periodically removed through the
system blow down drain. Residual heavy end hydrocarbons with boiling points
higher than pure LPG are trapped by the filter and fall to the bottom for removal.
A complete FILTAIRE system consists of inlet and outlet connections, a blow-
down drain (5), a pressure gauge (4), a vent which is normally plugged (6), and a
bypass valve system for cleaning (1, 2, and 3). The bypass valves enable the
system to continue operating when the
FILTAIRE is removed for cleaning ( see
Figure 4).
Note: Items 4, 5 and 6 are included with FILTAIRE assemblies.