Installation
ACC-SVN67H-EN
11
16. In the unit control box, route the wires along the
existing harness to contactor CC1. Secure wires to
existing harness.
17. Locate the low voltage wire harness with polarized
plug in the electric heater section compartment.
Remove the factory installed jumper. Connect the low
voltage polarized plug from the unit to the polarized
plug on the electric heater assembly.
18. Wire the heater element assembly to the electric heater
control panel according to the wiring diagram attached
to the electric heater control panel door.
19. Secure the green ground wire from the electric heat
control panel to the right hand wall of electric heater
compartment with star washer and #10 grounding
screw.
20. Wire W1, W2 and W3 wires to CC1 according to the
wiring diagram attached to the unit control panel door.
21. Route single point power entry wires through the front
access opening of the support panel adjacent to the
electric heater section compartment. Using good
installation practices, provide strain relief for high
voltage wires where necessary. See
or
.
22. Wire according to the wiring diagram attached to the
electric heater control panel door. Ground unit at
grounding lug provided on electric heater control
panel assembly.
Important:
After heater is installed and before applying
power, verify that heating elements are not
damaged or pinched and that heating
elements are not short circuited to each
other or to the heater frame or equipment
cabinet by doing the following: Test every
heater element with ohmmeter and verify
that heater element terminals are
electrically isolated from cabinet and
ground (infinite resistance). On downflow
units with or without duct work installed or
horizontal units without ductwork installed,
remove horizontal supply cover and
carefully inspect elements after installation
for damage or proximity to supporting
structure or cabinet. At least 1/4” clearance
is required around electric heater coils.
Important:
Be sure to check tightness of all terminal
connections, clamps, screws, etc., as these
may have become loose in shipment.
Retighten all electrical connections after
equipment has been in operation and
components have reached operating
temperature.
23. Install the magnets into the door as seen in
or
. Magnets should lock into place once
installed. Close electric heater control panel access
door, replace heat section access panel and unit
control box access panel. Replace horizontal supply
cover. Be careful when replacing cover and make sure
gasketing is not torn or missing. Gasket must make
water tight seal.
24. Scratch out the square on unit nameplate showing
heater model installed in unit.
NOTICE:
Use Copper Conductors Only!
Unit terminals are not designed to accept other types
of conductors. Failure to use copper conductors could
result in equipment damage.
WARNING
Proper Field Wiring and Grounding
Required!
Failure to follow code could result in death or serious
injury. All field wiring MUST be performed by qualified
personnel. Improperly installed and grounded field
wiring poses FIRE and ELECTROCUTION hazards. To
avoid these hazards, you MUST follow requirements for
field wiring installation and grounding as described in
NEC and your local/state electrical codes.
Summary of Contents for Precedent BAYHTRA309
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