35
Fig. 41 - Control Box - Bushings to Remove
Fig. 42 - Bushings Replaced from Outside Control
Box
9. Connect power tap conductors to unit mai n control
box.
Single point box
Route power wires thru conduit opening in the unit
and connect to t he single point terminal block. For
main control box power, take two legs and run them
thru the grommet to the main power terminal block.
Inst alling Electric Heater
1. Identify heater cover(s) to re move (See Fig. 46).
a. All two- heater installations: Remove both heater
covers. Save covers and screws.
b. All single- heater installations: Remove the heater
cover at Heater 1 position. Save cover and screws.
2. Open the heater package(s) and remove the heater
module, heater support track (where provided), heater
cover (where provided), screws, wiring label,
miscellaneous parts.
a. Heaters 101A00- 109A00: To install module, insert
heater frame into location notch in heater bracket
opening in unit and slide heater through the opening.
Fasten heater m odule to heater mounting bracket
with the four screws saved from Step 1 (See Fig. 46).
c. All other heaters: To install module, engage flange
on heater with track in unit and slide heater through
mounting bracket opening. Fasten heater module to
heater mounting bracket with the four screws saved
from Step 1 (See Fig. 46).
3. Single- phase heater conversion 208/230- v heaters
101A00- 104B00 are factory- wired for 3- phase
applications but can be converted to single- phase by
changing one wire as described below.
Three- phase applications: Skip to Step 4. For
single- phase applications, rewire the heater as
follows (see Fig. 42):
a. Connec t RED wire provided with kit to Heater
Rela y (HR) and to L1 as shown.
b. Disconnect YELLOW wire from HR Terminal 2
and reconnect to HR Terminal 3.
c. Using the wire tie provided, fasten the RED wire
to heater power wire harness near existing wire tie on
heat er module. This provides strain relief for the
RED wire. (See Fig. 47).
Connect BLACK and RED conductors in heater power
wire harness to the same L1 pole on single point box TB
or fuse block. Connect BLUE and YELLOW conductors
in the heater power wire harness to the same L2 pole on
single point box TB or fuse block (See Fig. 43).
LEGEND
HR - Heater Relay
HTR - Heater
LS - Limit Switch
Control Wiring
Power Wiring
Fig. 43 - Single- Phase Heater Wiring
40QQ
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