Algas SDI TORREXX TX100, Operation & Maintenance Manual

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ASDI Operations and Maintenance – TX Models – P/N: 52368
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SAFETY RELIEF VALVE
If the vaporizer is to be installed within an enclosure or building, VENT THE
SAFETY RELIEF VALVE OUTSIDE THE ENCLOSURE AND REDIRECT THE
DISCHARGE UPWARD. A pipe-away adapter must be used at the relief valve.
Always install a rain-cap or similar device to prevent water and other debris from
entering the relief discharge. If water enters, it may freeze and prevent the relief
valve from proper discharge, creating a potentially hazardous situation.
ELECTRICAL SERVICE
The rating plate on the vaporizer and the data sheet provided with the manual
provides your specific vaporizer’s electrical power requirements and the drawing
numbers of the appropriate wiring diagrams and schematics. This unit is
constructed to meet NFPA 70 Class I, Division 1, Group D requirements or ATEX
Zone I requirements (depending on model). All wiring to the unit, including the
ground connection, must meet the applicable codes for the area in which it is
being installed. Wire size and type must comply with the applicable codes for the
area in which it is being installed. The Tables 1 through 4 list the recommended
wire size for the different models. Those tables are to be used as guides only.
Provide a fused disconnect outside of the classified area. If it is not within sight
of the vaporizer, the fused disconnect must have a locking device. Run wire
within rigid conduit, and install a seal-off at the connection of the field conduit to
the vaporizer. Use separate breaker for each vaporizer!
WIRE SIZE
When selecting the type and size of wire used to install the TORREXX series
electric vaporizers, please take into account the following environmental
information:
■ Maximum enclosure surface temperature: 65º C (150ºF).
■ Maximum enclosure ambient temperature: 65º C (150ºF).
■ Maximum temperature allowed at contactor terminals: 90º C (195º F).
■ Current draw of vaporizer: Indicated on vaporizer rating plate and on the
data sheet.
■ Contactor terminal lug wire size range: #2 - 10.
As the length of the wire run affects the overall wire size requirements, always
refer to NFPA 70 (NEC) for proper wire selection. Several wire-sizing charts
have been provided for determining the size of wire required due to load and
length of wire.
When installing the wire it is important to have a good connection at the terminal
lugs. Loose terminals may cause an excessive temperature rise at the terminal
lugs, which can lead, to premature contactor failure, transformer failure, and/or
overheating and possible destruction of the transformer. For this reason it is
strongly recommended that the wire terminations be checked and re-tightened
periodically to prevent excessive overheating at the terminals due to loose
connections.