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V. ELECTRICAL CONNECTIONS
All electrical wiring and connections MUST be performed by
qualified personnel in accordance with the latest edition of the
National Electrical Code ANSI/NFPA No. 70 or, in Canada, the
Canadian Electrical Code, Part 1-C.S.A. Standard C22.1 and local
codes and regulations.
MAKE SURE THE CORRECT
VOLTAGE AS MARKED ON THE UNIT IS USED.
A.
A separate line voltage supply with a suitable branch
circuit protection device should be run directly from the
main electrical panel to the unit. A disconnect switch for
each branch circuit is a required part of this installation.
See the voltage label on the unit for circuiting and total
electrical load. The wiring diagram is located in the
junction box. See Figure 6.
B.
All field wiring must be copper with a minimum
insulation of 60°C within approved conduit. If any of the
wire supplied with the unit must be replaced, it must be
replaced with copper wiring with a minimum insulation
of 90°C.
C.
Electric, steam and hot water heated air curtains are
factory equipped with an air curtain mounted solid state
temperature sensor cable located in the junction box.
Depending on where the temperature is to be measured,
the sensor may be left on the endplate or positioned
elsewhere. Do not put any clamps on the rubber coated
tip.
Access the wiring compartment, See Figure 6, by
D.
lowering the bottom hinged access cover. Remove the
two ¼" bolts located on the intake side of the unit and
the access cover will swing down to rest in the vertical
position exposing the wiring compartment. If desired,
the access cover may be removed by grasping both
sides of the access cover and pressing in on the spring
loaded hinges. See Figure 6. The top of the unit has two
knockouts on each side allowing for a left hand or right
hand power connection. Remove the required knockout
and connect the power supply to the unit.
A wiring guard, See Figure 7, is mounted on the right of
E.
the air intake of the unit. The wiring guard is reversible,
so it may be mounted on either side of the unit. Remove
the ¼" mounting bolt. Clearance holes enable the wiring
guard to be removed without disturbing the ¼" shoulder
bolts.
F.
Route wiring into the wiring tray through plastic
snap ring bushings directly below the power supply
connection.
G.
Connect all supply and control circuit wires according to
the wiring diagram provided.
H.
Reinstall the wiring guard so that it covers all of the
wires used to make the connections to the terminal strip.
Reinstall the ¼" mounting bolt. See Figure 7.
I.
Reinstall the hinged access cover by positioning one
hinge into the corresponding catch located on the unit.
Raise the other hinge to the unit, when the catch is
located press in the hinge and release it into the catch.
Swing the access cover into place and align the mounting
holes with the threaded inserts on the unit. Reinstall the
two ¼" bolts. See Figure 6.
FIGURE - 6 Access Cover Removal
FIGURE 7 - Wiring Guard
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