Figure 40 _Example of Variable Speed Furnace Control for ECM Blower Motor - (F/G)9MVT
MODEL PLUG
CONNECTOR \
COMMUNICATION CONTINUOUS FAN OUTDOOR SW4 SETUP
CONNECTOR (CF) AIRFLOW AIR TEMP SWITCHES
SETUP SWITCHES CONNECTOR
SW1 SETUP
SWITCHES AND
BLOWER OFF-
DELAY
AIR CONDITIONING
(A/C) AIRFLOW
SETUP SWITCHES
24-V THERMOSTAT
TERMINALS
STATUS AND COMM
LED LIGHTS
3-AMPFUSE
TRANSFORMER
CONNECTIONS
115-VAC (L2) NEUTRAL
CONNECTIONS
I
ACRDJ
PL1- LOW VOLTAGE MAIN
HARNESSCONNECTOR
AND ECM BLOWER SOFTWARE
HARNESS CONNECTOR VERSION
/
HUMIDIFIER
TERMINAL (24A!AC
0.5 AMP MAX.
_ O_ FLASH
UPGRADE
CONNECTOR
(FACTORY
E_ _ ONLY)
K 2 Z0 33 11 _ _ _
kRT NUMBER AND _ t15-VAC (L1) LINE
DATE CODEVWVYY I VOLTAGE CONNECTIONS \ PL2 - HOTSURFACE
I
IGNITER & INDUCER
EAC-1 TERMINAL MOTOR CONNECTOR
(115-VAC 1 .O AMP MAX.)
Figure 41
Example of Two-Stage Furnace Control for ECM Blower Motor - (F/G)9MXT
SET UP SWITCHES
THERMOSTAT TYPE(TT)
AND HEAT OFF DELAY
SELECTCHART
TERMINALS
3 AMP
LED OPERATION
& DIAGNOSTIC LIGHT --
V '%L%PEE(
115 VAC (L2)
NEUTRAL
CONNECTIONS
TSTAT HEAT
SW TYPE 0FF-DELAY
0#F 1-STG 2 3 90
I_STAT I_ I_ SEO,
ON I2-ST6 2 3"12 0
OFF II $TAT III III SEC,
ON 2_S 1_0
OFF _ i SEC.
OFNF 2.s.180
* FACTORYSETTINGS
;_ I PLT
SWl 1 2 3 z _ o
_) _
I>II
LU _
_ _-g_o_>_ _
o _ _: _ STAT
TWINNING AND/OR
_ OMPONENT TEST
, TERMINAL
HUM _ HUMIDIFIER TERMINAL
(24 VAC 0.5 AMPS MAX)
TRANSFORMER
24 VAC CONNECTIONS
-O c_'_W_O_ i_ P I LOW VOLTAGE
lill;:Swvs°POWER,°L.
HI U COiNECTION 115 VAC
" /TRISNASRFyORMER
/ IP2NITIO/TN%%RcF;S E
EAC TERMINAL MOTOR CONNECTION
115 VAC 1.0 AMP / l
EAC 2 _^X I / _ /
-- . CD " }
L(_I B_L- 1X(_FFMR H(_UUM g_ [_
I I
115 VAC LINE (L1)
115 VAC RUM
INPUT
Ltl F081
L12F037
440 01 4001 04 Specifications subject to change without notice. 35
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