Global Commander PXG Series Manual

1 800 463-7043 • www.globalcommander.ca
I.GENERAL
"PXG Series" Explosion-proof sloped top convector heaters are
cCSAus certified Class I, Division 1, Groups. B, C & D, and Class
II, Division 1, Groups E, F & G; Class I, Zone 1 & 2, Group IIB+H2.
The heaters are also available in corrosion resistant construc-
tion, suitable for NEMA 3, and corrosive environments.
The specific heater ratings are shown on the data plate.
The heaters are intended for horizontal wall or floor mounting
in industrial applications only. Surface temperatures of the
cabinet may exceed those normally expected with residen-
tial equipment, so the heater should never be installed in a
residential or similar environment where drapes or upholstery
may come into contact with the heater or where unintended
personnel contact may occur.
The maximum operating temperature ignition code is stam-
ped on the data plate. NEVER operate the heater in an atmos-
phere with an ignition code temperature lower than this
rating. The heaters are designed for convection airflow in a
maximum ambient temperature of 40°C (104°F).
NEVER operate the heater in a vertical mounting orientation
or where the ambient temperature may exceed 40°C (104°F).
For details on the particular hazardous environments having
the potential for explosion, refer to Articles 500 through 516
of the National Electrical Code, and/or Section 18 of the
Canadian Electrical Code, Part I.
A. Explosion-proof sloped top convector heaters are intended
to be permanently mounted to a wall by mounting brackets
supplied with the heater or floor mounted with the optional
floor mounting brackets. A high temperature limit control is
built into the heater.
All heaters connected to a 3 phase voltage source and all
single phase heaters above 277 Volts or 25 Amps will require
a control contactor, operated by the limit control, to control
the heater. Certain optional controls such as a thermostat
and/or contactor and control voltage transformer are avai-
lable and when supplied with the heater they are supplied
inside their own rated enclosures mounted on the right side
of the cabinet or supplied as remotely mounted items. When
mounted on the cabinet the enclosures are connected to
the heater terminal box using rigid metal conduit and the
controls are factory wired.
INSTALLATION, OPERATING
AND MAINTENANCE INSTRUCTIONS
FOR EXPLOSION-PROOF SLOPED TOP
CONVECTOR HEATER
"PXG" SERIES
Remotely located controls, outside the hazardous
area, may be in a standard enclosure, area permitting.
All wiring connections to the heater must be made using rigid
metal conduit, and an explosion-proof conduit seal must be
located immediately adjacent to the heater. All wiring must
comply with all national and local codes for equipment in
hazardous locations.
The Explosion-proof heaters are specifically designed for each
application
and should be properly installed, operated and maintained
for optimum service life.
B. Disassembly of the unit for installation is not required
or authorized. When installing:
1. Observe all heater nameplate ratings, warnings and notes.
2. Follow the wiring diagram supplied with the heater in
making all electrical connections.
3. Keep all electrical connections tight.
4. Keep the heater terminal enclosure and heating elements
clean.
5. Never cover the heater while in operation.
6. Carefully read and comply with all warnings.
II. INSTALLATION
A. Site Selection:
1. "PXG Series" Explosion-proof sloped top convector heaters
are designed for use only while permanently mounted in a
horizontal orientation at a minimum of 6" (152 mm) above
the floor.
2. The site must allow sufficient free space around the hea-
ter for safe and easy installation and maintenance access.
Workspace for heater maintenance should be at least 36"
(914 mm) all around the front of the heater cabinet and
terminal box.
3. Airflow through the heater should not be restricted or
blocked in any manner.
4. The site must have adequate means to support the weight
of the heater, and provide physical protection to the heater.
THE MANUFACTURER strongly recommends this heater
be installed by qualified personnel familiar with the National
Electrical Code and/or the Canadian Electrical Code
requirements for hazardous locations as well as any local
codes. It is the responsibility of the installer to verify
the safety and suitability of the installation.
-WARNING-