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INSTALLATION INSTRUCTIONS
Compare the sales package number(s) for schedules heater
modules against the approved usage table on unit's
dataplate. If the schedules heater usage does not appear on
units dataplate label, STOP. Contact the project engineer
or the local distributor sales office for clarification.
Open the cartons and inspect for damage.
Disconnect field power supply
1. Disconnect power to the unit. Lock- out/tag- out on
unit disconnect switch.
2. Remove the outdoor access panel, control box cover,
and indoor access panels from the unit. Save screws.
See Fig. 39.
3. Use a voltmeter to check that no power is present at
unit terminal block.
4. Remove control box cover and center post. Save
screws.
5. Add seal strip to the rear bottom corner of the control
panel as shown in Fig. 41. Foil tape open screw holes
on the back of the single point box as shown in Fig.
44. Different single point boxes will have different
screw holes open.
Fig. 41 - Seal Strip and Foil Tape Location
6. All bushings in the area of the control box where the
single point box (SPB) mounts must be removed prior
to securing the SPB to the control box. See Fig. 42.
Also, for units installed in the snow belt, all
unplugged holes in the bottom of the control box,
which are not used, must be plugged before installing
the SPB. Use foil tape or reinstall the bushings from
the outside of the control box prior to securing the
SPB. See Fig. 43.
Fig. 42 - Control Box - Bushings to Remove
7. Remove the single point box cover. Secure single
point box to the underside of the control box with the
two screws provided. Re- install bushing on the SPB
tap conductors. See Fig. 40.
Fig. 43 - Bushings Replaced from Outside Control
8. Secure the rainshield (conduit drip boot bracket)
assembly to the back of the single point box with 2 of
the screws provided. The channel portion of the
bracket assembly extends to the top panel behind the
control box. Secure all wires to bracket with
field- supplied wire tie as shown. See Fig. 44.
33
Box
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