Page 22
Thermostat
Install the room thermostat according to the instructions 
provided with the thermostat. See FIGURE 22 and or 
FIGURE 23 for thermostat designations. If the furnace is 
being matched with a heat pump, refer to the FM21 in-
stallation instruction or appropriate dual fuel thermostat 
instructions.
Indoor Blower Speeds
1 -   When the thermostat is set to “FAN ON,” the indoor 
blower will run continuously on the fan speed when 
there is no cooling or heating demand. See TABLE 
12 for allowable continuous circulation speeds.
2 -  When the EL180UHNE is running in the heating 
mode, the indoor blower will run on the heating 
speed.
3 -  When there is a cooling demand, the indoor blower 
will run on the cooling speed.
FIGURE 22 
EL180UHNE-060, -080, -100 Schematic Wiring Diagram