Explosion-Proof Conduit Seal - Honeywell STT750 Quick Start Installation Manual

EXPLOSION-PROOF CONDUIT SEAL

When installed as explosion proof in a Division 1 Hazardous Location, keep
covers tight while the Transmitter is energized. Disconnect power to the
Transmitter in the non-hazardous area prior to removing end caps for service.
When installed as non-incendive equipment in a Division 2 hazardous location,
disconnect power to the Transmitter in the non-hazardous area, or determine that
the location is non-hazardous before disconnecting or connecting the Transmitter
wires.
Transmitters installed as explosion proof in Class I, Division 1, Group A Hazardous
(classified) locations in accordance with ANSI/NFPA 70, the US National Electrical
Code, require a LISTED explosion proof seal to be installed in the conduit, within 18
inches (457.2 mm) of the Transmitter. Crouse-Hinds type EYS/EYD or EYSX/EYDX
are examples of LISTED explosion proof seals that meet this requirement.
Transmitters installed as explosion proof in Class I, Division 1, Group B, C or D
hazardous (classified) locations do not require that explosion proof seal be installed
in the conduit.
Step
1
See Figure
using a 1.5 mm Allen wrench.
2 Remove the end cap cover from the terminal block end of the
Electronics Housing
3
Feed loop power leads through one end of the conduit entrances on
either side of the Electronics Housing. The Transmitter accepts up to
16 AWG wire.
4
Connect the positive loop power lead to the positive (+) terminal and
the negative loop power lead to the negative (-) terminal.
Note that the Transmitter is not polarity-sensitive.
5
Feed input sensor wires through the 2
connect wire per wiring diagrams.
6
Replace the end cap, and
secure it in place
12
Action
8, above, for parts locations. Loosen the end cap lock
Quick Start Installation Guide
SmartLine Temperature Transmitter
nd
conduit entrance and