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QM Packaged Propane-Air Back-Up System
The Algas-SDI QM natural gas replacement system is a combination gas fired waterbath
LPG vaporizer and atmospheric venturi LPG/air mixer. All QM models feature an Eclipse
Combustion ThermAir forced draft burner and Algas-SDI optimized venturi mixers.
Operation of these units has been proven in -40°F climates. PLC controls with an
easy to use operator interface are provided in a temperature controlled enclosure
to ensure long-term reliable operation. A "Smart-Start" cold start feature
automatically senses and controls the inlet propane pressure to make sure only
vapor is fed to the burner until the bath is warm enough for full vaporization.
When the bath has reached operating temperature an output is switched by the PLC
that turns on the LPG pump (STABILAIRE). A maintenance program tracks the hours
used, venturi cycles, and burner cycles to allow the user to schedule service
accordingly. Flow totalization is also provided for convenience.
Features
Compact system comprised of vertical waterbath vaporizer and atmospheric venturi mixer
A forced draft burner keeps the waterbath at optimum vaporizing temperature
Powder coated galvanized steel cabinet
Easy to use Operator Interface with PLC and smart controls
Integral heavy ends trap keeps the "gunk" out of the venturi controls
Heavy duty water pump provides circulation and prevents temperature stratification
Systems 100 million and larger use a single pilot operated venturi regulator for robust, consistent control and easy adjustment
Delivery pressures up to 15 PSIG available with commercial propane feedstock, up to 8 PSIG with butane rich LPG, and up to 40 PSIG with compressed air
FM Approved
Capacities
28 - 150 MMBTU/hr
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Date Last Edited:
11/16/07
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