Site Selection
Install furnace on a sturdy surface and allow space for
ventilation.
The electrical specifications are located on the specifica-
tion plate on the back of the furnace. Consult Barnstead
International if your electrical service is different than
those listed on the specification plate. Prior to connecting
your Type 46100 or 46200 furnace to your electrical sup-
ply, be sure the front circuit breaker is in the OFF posi-
tion.
Furnace Connection
Remove cover plate for access to the electrical connec-
tions. Connect electricity to the three terminals found
behind this plate; one side of the 208 or 240 volt service
to the top terminal, L1; the other side of the 208 or 240
volt service to the bottom terminal, L2, and the ground
(usually green wire) to the center terminal marked GND.
For 220 volt service, connect the neutral to the top termi-
nal (marked L2); the 220 volt line to the bottom terminal,
L1, and the ground to the center terminal marked GND.
Electricity must be brought to the furnace through an ap-
propriate conduit system, through the hole in the back
panel at the bottom left rear of the furnace, and connect-
ed as described. Be sure to observe local wiring codes in
connecting.
Initial Heatup Procedure
The elements may bend slightly sideways due to electro-
magnetic forces generated between the element shanks.
To prevent this bending, heat the furnace up to 1650°C
for 10-20 minutes. Then let furnace cool to ambient tem-
perature. See Operation for your particular controller for
information on setting temperature setpoints.
12
Installation
Note
The type 41600 and 46200 furnaces
do not come with an electrical cord
because current requirements are too
great to be handled by ordinary elec-
trical cords and standard wall electri-
cal outlets.
Caution
Be sure ambient temperature does not
exceed 104°F (40°C). Ambient temper-
atures above 104°F (40°C) may result
in damage to the controller. Allow at
least six inches (15 cm) of space
between the furnace on all sides and
the top. This permits the heat from the
furnace case to escape.
Warning
To avoid electrical shock, this furnace
must be installed by a competent,
qualified electrician who ensures com-
patibility among furnace specifications,
electrical source and grounding code
requirements. Ensure unit is properly
grounded.
Caution
For supply connections, use AWG or
larger wires suitable for at least 90°C.
Failure to observe this caution could
result in damage to the furnace.
