Ouellet OPX - Manual (Page 2)

2
=WARNING=
Do not install the heater in a residential or similar environment where
drapes or upholstery may come into contact with the heater or where
unintended personnel contact may occur.
B. Mechanical Installation. Once an acceptable
location has been determined, follow these
instructions to complete the mechanical installation.
=WARNING=
Disassembly of the unit for installation is not required or authorized.
1.) Wall mounted heater.
a.) Refer to Figure 1.
b.) Mark the mounting screw locations or the
wall mounting brackets on the vertical
surface.
c.) Center punch and/or pilot drill the
mounting screw locations.
d.) Using four screws (not supplied with the
heater) attach the wall mounting brackets
to the vertical surface.
e.) Lift the heater up and then down over the
mounting brackets so that the “V” lip at the
top of the brackets engage the slots in the
back of the heater cabinet.
f.) Make sure that the heater is resting in the
bottom of the “V” lip so that the mounting
holes at the bottom of the wall mounting
bracket align with the mounting holes in
the heater cabinet.
g.) Fasten the heater to the wall mounting
brackets using the 2 screws, washers and
nuts provided.
C. Electrical Installation. Follow these instructions
to complete the electrical installation:
=WARNING=
Potentially lethal voltages are present. Be sure to lock the branch
circuit disconnect switch in the off position and tag the circuit “Out for
Maintenance” before working on this equipment.
1.) Follow the wiring diagram and any Code
recommendations in making all electrical
connections.
2.) Use only an approved explosion-proof means of
wiring, such as insulated copper conductors in
rigid metal conduit with threaded connections
per Canadian Electrical Code to make the
electrical connections to the heater.
3.) Determine the voltage, phase and KW rating of
the heater from the heater data plate.
4.) The branch circuit voltage and phase must
match the heater voltage and phase rating.
5.) Calculate the rated load current of the heater
as follows:
Kilowatts x 1000
Single Phase units
Voltage
Rated Load Current
Kilowatts x 1000
Three Phase Units
Votalge x 1.73
Rated Load current
6.) Use branch circuit supply wires rated for 75°C
(167°F) and the rated load current to connect the
heater.
7.) For heaters without optional built on thermostat
or contactor:
=WARNING=
When making electrical connections to the heater, be sure to follow the
wiring diagram provided with the heater. The heater must not be operated
without the safety high temperature limit cutout properly connected in the
circuit.
a.) All 3 phase heaters and all single phase
heaters above 277 volts or 25 amps must have
a safety contactor to disconnect the power if
the temperature high limit opens. The
contactor, must be CSA approved for 150,000
cycles with a resistive rating per pole equal to
or greater than the heater rated load current.
The holding coil voltage rating of the contactor
cannot exceed 277 volts.
b.) Install an appropriately rated explosion-proof
conduit sealing fitting in the 3/4" NPT
connection hub in the bottom of the heater
terminal box.
c.) Remove the terminal box cover.
d.) Pull the heater power connection wires labeled
L1, L2 and if 3 phase L3 and the high
temperature control wires labeled C1 and C2
out of the terminal box through the cover
nipple.
e.) Run the branch circuit supply wires and the
contactor control wires, if any, through the
conduit and conduit sealing fitting into the
bottom of the terminal box and out through
the cover nipple.
f.) Select the appropriate wiring diagram that
matches the installation and make the wiring
connections using approved wiring connectors.
g.) Push the wires back into the heater terminal
box.
h.) Install the terminal box cover, making sure it
is screwed tightly in place.
i.) Pour the explosion-proof seal in the sealing
fitting.
j.) Before application of electrical power, recheck
all connections to ensure compliance with the
wiring diagram and any code requirements.
Remove any foreign objects from the terminal
enclosure. Reinstall cover tightly.
k.) See operating instructions, Section V, before
operating the heater.
8.) For heaters with optional built on thermostat or
contactor follow the instructions provided with the
control(s).
=WARNING=
When making electrical connections to the heater, be sure to follow the
wiring diagram provided with the heater.