Chromalox CXH-C-05S Installation And Operation Instructions Manual - Page 3
Browse online or download pdf Installation And Operation Instructions Manual for Heater Chromalox CXH-C-05S. Chromalox CXH-C-05S 19 pages. Cxh series
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CXH Forced Air Heater for Hazardous Locations
Failure to understand and follow these installation instructions
and the WARNING notes contained therein may result in se-
vere personal injury, death or substantial property damage.
1. To reduce the risk of ignition of hazardous atmospheres:
In accordance with applicable electric codes, do not in-
stall where operating temperature code exceeds the igni-
tion temperature of the hazardous atmosphere. Use only
in atmospheres having an ignition temperature higher
than 200°C (392°F).
2. Do not open when an explosive gas atmosphere may be
present.
3. Disconnect from supply circuit before opening enclosures.
4. HAZARD OF ELECTRIC SHOCK. Heater must be ef-
fectively grounded in accordance with applicable electric
codes to eliminate shock hazard.
5. Heat exchanger contains Propylene Glycol under pres-
sure at operating temperature. A material safety data
sheet (MSDS) is available from Chromalox upon request.
Should leakage occur, remove unit from service and in-
vestigate cause.
6. Keep all electrical enclosure covers tightly closed and
secured with all bolts and threads. Cover joints must be
clean before replacing covers.
Explosion-proof
motor
Explosion-proof
(NEMA 7 & 9)
controls enclosure
Motor connections
wiring access
Convenient terminal
block for room
thermostat protection
Protective housing
for immersion heater
terminal enclosure
Heavy duty immersion heater assembly
with high temperature cutout(s) and
NEMA 7 & 9 terminal enclosure
Mounting bolt
Integral, heavy duty
hanger connections
magnetic contactor
Built-in 120V control
circuit transformer
(Optional 24V available)
3
7. Install and operate in upright position only. Refer to Fig-
ure 3 for level requirements. Failure to comply will cause
overheating of the element and shutting down the unit by
tripping the high temperature cutout.
8. All unused threaded openings not used for supply wiring
must be fitted with threaded plugs approved for use in
hazardous locations.
9. All unit electrical installation fittings, conduit, wiring and
seals must meet applicable electric codes and local
codes for hazardous locations.
10. External line fusing or circuit breaker protection is re-
quired.
11. Hi limit cutouts must never be bypassed in the control
circuit.
12. Mounting clearances on nameplate must be observed.
13. Use copper wire for supply connections according to
size and rating on nameplate.
14. Do not install any type of gasket material on any of the
electrical junction box cover surfaces.
15. Do not attempt to override louver stops or operate unit
with louvers fully closed.
Polyester powder-coated
heavy gauge steel corrosion
resistant cabinet
aluminum-finned steel tubes
Optional service light to
indicate when unit
needs servicing
Overpressure
protection device
Heavy gauge adjustable
louver with minimum
opening stops to direct air flow
Removeable front cover
for ease of cleaning
High efficiency heat
exchanger with integral