Carrier 40MBAA Installation Instructions Manual page 10

Air handler unit ductless system
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9. Insert the white plug of the electric heating control line into the
electric control box through the reserved crossing hole and insert
into the corresponding white plug in the electronic control box.
Fig. 28 — Insert the white plug
10. Connect the low voltage control wires of the electric auxiliary heat
module to the AUX terminals of the 24V module board (not
polarity sensitive). Figure 29 shows the module board terminal.
NOTE:
The control wire may be connected to the AUX terminals
in any order.
Fig. 29 — Connect the auxiliary heat wires
11. Power Wiring should be sized in accordance with NEC (CEC)
requirements and local codes (see Table 6 on page 11). Choose the
power cord and the power cord installation location (see Figure 30).
Each circuit breaker group needs to connect to the power input line.
Where needed, Jumper L1 and L2 to the terminals for the other
contactor.
10
Fig. 30 — Choose the power cord installation
12. See Figure 31 for the securing position of the power supply ground
wire. Secure the power input wires for each group, and make sure
that the cable is properly grounded.
Fig. 31 — Secure the power input wires of each
NOTE: After installing the electric auxiliary heat module, place
the circuit breaker label near the upper cover circuit breaker.
Fig. 32 — Circuit Breaker Label Placement
13. Remove the resilient cap and seal from the auxiliary heat module
accessory bag, and attach the seal to the resilient cap.
Specifications subject to change without notice.
location
group
Fig. 33 — Remove the resilient cap
IM-40MBAA-02

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