Control Wiring - Carrier 40KMC Installation Instructions Manual

Control Wiring
The control circuit is 24 volts AC (minimum 40VA) supplied from
the indoor unit.
1. Make sure you have enough control wires to cover the dis-
tance between the indoor and outdoor unit.
Indoor
Terminal
Board
Indoor ~
Board i
ae ae \
Outdoor |
Terminal ——>
Board |
a Lee TES AE ISHIRAL Ewen mm mr rr rr rn |
foo 7) HEGHMALL Fe © TT
A09508
Fig. 19 - 38HDF Control Terminal Strip
2. Route one end of the control wiring through the opening
rovided in the unit side panel and connect to the control
Pp Pp
terminal strip using either Fig. 19 for 33HDF units and Fig.
20 for 38ORF units.
Indoor
Board
\ Indoor
Terminal
Board |
EH — v0 siseeiai @ - ~ — — — — — — — =|
ae wos TO HEGHGRLL & —_
vow TO HLSOGRLA, OF _T TTT TT TT
Outdoor 1G MIG, & = —— — $s —— S$ —— S$ —— ss
Terminal —+> 09 teil ¢ = < —— —— —— —— — — — —|
Board [EB] 80 AEGHWALL Ro |
[ B p l e n #0 wisewL @ © ) —— ——- —- ——- —— —— —— —
A09509
Fig. 20 - 38QRF Control Terminal Strip
NOTE: Use No. 18 AWG color-coded, insulated 35°C minimum) wire. If the distance between the indoor and outdoor unit is
greater than 100 ft. 30.5 m), as measured along the control voltage wires, use No. 16 AWG color-coded wire to avoid excessive
voltage drop.
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