Carrier 59TN6A - Example of Variable Speed Furnace Control

MODEL PLUG
CONNECTOR _
SWI SETUP
SWITCHES AND
BLOWER OFF- _DELAY
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
f
24-V THERMOSTAT
TERMINALS <
STATUS AND COMM
LED LIGHTS
COMMUNICATION
CONNECTOR
\
CONTINUOUS FAN
(CF) AIRFLOW
SETUP SWITCHES
OUTDOOR SW4 SETUP
AIR TEMP SWITCHES
ACRDJ
m
[]
[]
[]
[]
[]
n
FUSE3-AMP
3-AMP FUSE _ SEC-2 SEC-1 _D I I I I
" z "T E_Cq
TRANSFORMER_4_VAC'_"E_I=_-- ' = __L_ I I
/ I I
CONNECTIONS
====F_I_ 1 ,--. Iq_oo_ I I
_V Iv17HK42FZ0433411 == -_'X&I VS.S,HI LO_%
115-VAC (L2) NEUTRAL _,---4 _Z m . . 'k
c /,oil T \ \\
PLH_ARNLOWsVcOoLTNAGcETMoAR_N/ "---1/ PA_TNUMB_ANyD VOL_I_VACo(L_L;NT_oNS\
SOFTWARE EAC-I TERMINAL
VERSION (115-VAC 1.0 AMP MAX.)
HUMIDIFIER
_-_ TERMINAL (24WAC
0.5 AMP MAX.
ACRDJ - AIR
CONDITIONING
RELAY DISABLE
JUMPER
O_ FLASH
UPGRADE
CONNECTOR
(FACTORY
ONLY)
\
PL3-ECM BLOWER
HARNESS
CONNECTOR
PL2-HOTSURFACE
IGNITER&INDUCER
MOTOR CONNECTOR
Al1617
Fig. 35 - Example of Variable Speed Furnace Control
H
37