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UTEC TWO-STAGE CONSTANT TORQUE INTEGRATED FURNACE CONTROL
ECM DRIVE - 24VAC
Flame Sense
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 (one 120VAC output terminal for optional accessory)
L1 (three 120VAC line terminals)
Neutrals (five 120VAC neutral terminals)
Page 28 of 38
Accessories
Humidifier
Figure 25. UTEC Integrated Furnace Control 107047-xx
Line Voltage
Thermostat Connections
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) & Chassis 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
Issue 2220
Ignitor and Combustion
Air Inducer
Neutrals
Line Voltage
On Board Links
508145-01G / 31-5000660
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