CCI Thermal Technologies CXF - Flange Heater (Incoloy Sheath, Low, Medium Density) - Manuel

CCI Thermal Technologies Inc. 2767 Brighton Road, Oakville, ON L6H 6J4 Tel. (905) 829-4422 Fax (905) 829-4430
www.ccithermal.com
MI180 REV. 4
INSTALLATION AND MAINTENANCE INSTRUCTIONS
SPECIAL LOW WATT DENSITY TYPE CXF HEATER
FOR AIR HEATING APPLICATIONS
1.0 INSTALLATION
1.1 These heaters are specifically designed for operation in a forced air stream. Never allow the heating
elements to operate unless there is a positive flow of air over the elements or failure will result.
1.2 CAUTION:
Use the heater only at the temperature and pressure for which it was designed. A
heater of this type, if allowed to operate without airflow, could cause a fire hazard.
1.3
The terminals must be protected at all times from moisture or vapour. In hazardous locations,
explosion resistant terminal housings must be used. In outdoor locations, moisture resistant housings
are required.
1.4
Protect terminals of heating elements from drippings, condensation, fumes, spray or any other
substance which could result in element contamination.
2.0 WIRING AND CONTROL
2.1 Heaters must be wired by qualified personnel to electrical code requirements.
2.2 Check supply voltage for compliance with heater nameplate voltage.
2.3 A line voltage or pilot duty thermostat should be used to control the heater. The pilot duty thermostat
must be used with a contactor and (if required) a transformer. Generally, heaters supplied with built-in
thermostats will be factory prewired if suitable for line voltage operation. Integral thermostats not factory
prewired are usually intended for pilot duty.
2.4
It is recommended that the control circuits be supplied from the isolated secondary windings of
transformers obviating the need for two supply circuits, or as an alternative, that mechanical or electrical
interlocking be provided so that both supplies must be disconnected before live parts can be made
accessible.
2.5
If there is even the slightest possibility that the air flow may be interrupted, an air flow switch or over-
temperature sensing device must be incorporated in the system. Check factory for recommendations.
2.6
Heaters with explosion resistant terminal housings must only be used in locations for which the
heaters are certified.
a)
Check heater nameplate information for approval code.
b) Never energize an explosion resistant heater unless the terminal housing cover is properly tightened.
c) A heater for hazardous locations is approved for use only if an approved high temperature cutout is
used to de-energize the heater under abnormal conditions.
3.0 START-UP INSPECTION
3.1 Check that all terminal connections are tight.
3.2 Heaters stored for prolonged periods may absorb moisture. Using a megger (insulation resistance
tester) check the value of the insulation resistance to ground for each circuit. Initial readings of over 500,000
ohms to ground are normally acceptable. Should lower readings be observed, check factory for
instructions.