CCI Thermal Technologies FE2 - Explosion-Proof Electric Air Unit Heater - Manual (Page 4)

4
WARNING
Read and adhere to the following. Failure to do so may result in severe or fatal injury.
WARRANTY WILL BE VOID
I M P O R TA N T N O T I C E S
1. Read and follow all instructions in this manual.
2. Heater is to be used only in atmospheres having an
ignition temperature higher than the heater’s maximum
rated operating temperature as shown on the heater
data plate. Refer to applicable electrical codes for
additional information.
3. Heater to be used only in the hazardous locations
indicated on the heater’s data plate.
4. Heater is for dry indoor use only. Do not immerse in
water. Do not store or use in areas exposed to rain
or snow.
5. Heater is to be connected and serviced only by a
qualified electrician experienced with hazardous
location equipment.
6. Installation and wiring of the heater must adhere to
all applicable codes.
7. Disconnect heater from power supply at fuse box before
opening enclosures or servicing heater. Lock the switch
in the “OFF” (open) position and/or tag the switch to prevent
unexpected power application. Verify that power has been
disconnected at fuse box or main panel. Lock the switch
in the “OFF” (open) position and/or tag the switch to prevent
unexpected power application.
8. This heater is equipped with a single bimetal
over temperature high-limit. It is of the automatic reset
type and therefore the heater may restart without
warning. The heater is not to be operated with the
high-limit disabled or disconnected from the
control circuit.
9. Venting pressure of the pressure relief valve is factory
set. Do not tamper with lock nut.
10. Do not tamper or remove warning label indicator on the PRV.
11. Operate the heater only while it is permanently
mounted in an upright position. Refer to the
“Installation - Mechanical” section for details.
12. Heater must be kept clean. When operating in a dirty
environment, regularly clean the finned tubes, fan, and
fan guard. Follow the recommended maintenance
procedures. Refer to the “Heater Maintenance
Checklist” section for details.
13. The heater core is vacuum charged and contains
propylene glycol. If any fluid leakage occurs from the
heater, disconnect it from the power supply and have
the core replaced with a factory supplied core. Refer to
the “Repair and Replacement” section for details.
14. Do not operate the heater with any of the louvers fully
closed or overriding their stops.
15. Do not operate the heater in atmospheres corrosive to
steel or aluminum.
16. Do not operate heater in ambient temperatures above
40°C (104°F).
17. Unused apertures shall be closed with suitable blanking
elements. All cable entry devices and blanking elements
shall be certified in type of explosion protection flameproof
enclosure “d”, suitable for the conditions of use and
correctly installed.
18. Installer to provide certified Ex “d” sealing fittings and
stopping boxes for the same gas groups as the apparatus.
19. The distance from the face of the seal closest to the
enclosure (or intended end-use enclosure) and the outside
wall of the enclosure (or intended use-enclosure), shall be
as small as practical, but in no case more than the size of
the conduit or 50 mm, whichever is the lesser.
20. Use factory approved replacement parts only.
21. See applicable electrical codes for seal requirements in
field installed conduits. Factory installed conduits
require no further sealing.
22. Crackling or pinging noises within the heater core
during start up may occur. This is normal.
23. Air discharge near the bottom of the heater may be
warmer than the top. This is normal.
24. If there are any questions or concerns regarding the
heater, contact the factory. Refer to the last page of
this manual for details.
25. Contact original manufacturer for information on the
dimensions of the flame proof joints.
26. Heater must be permanently mounted in a level, upright
position for operation. See mounting section or mounting
instructions label located on the heater's control box.
FIGURE 1
PRV
PRV LOCK NUT
PRESSURE RELIEF VALVE
(PRV) LABEL INDICATOR