Page 40
Integrated Control 107048-XX
Flame Sense
Humidifier
ECM DRIVE - 24VAC
Accessories
Line Voltage
Line Voltage
Ignitor and Combustion
Air Inducer
Neutrals
On Board Links
Thermostat Connections
3/16” QUICK CONNECT TERMINALS
HI COOL (24VAC)
LO COOL (24VAC)
HI HEAT (24VAC)
LO HEAT (24VAC)
PARK (two un-powered terminals for unused motor
speed taps)
FLAME SENSE
¼” QUICK CONNECT TERMINALS
HUM (two un-powered, normally open/dry contacts)
ACC (120VAC output terminal for optional accessory)
L1 (three 120VAC line terminals)
Neutrals (five 120VAC neutral terminals)
THERMOSTAT CONNECTIONS
DS= Dehumidification signal
W2= Heat demand from 2
nd
stage Tstat
W1= Heat demand from 1
st
stage Tstat (white)
R= Class 2 voltage to thermostat
G= Manual fan from Tstat (green)
C= Tstat signal ground connected to transformer
Ground (TR) & Chasis ground (GRD)
Y1= Tstat 1
st
stage cool signal
Y2= Tstat 2
nd
stage cool signal
DH= NOT USED
H= NOT USED
L= NOT USED
UTEC TWO-STAGE CONSTANT TORQUE INTEGRATED FURNACE CONTROL
FIGURE 59
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