Thermostat W Iringguide - ICP 8MPT Installation Insrtuctions

18. Thermostat Wiring Guide
1. These diagrams are for reference. See thermostat 8.
wiring instructions for specific terminal assignments,
connections or operation.
2. Humidifier/humidistat is optional and not included 9.
with the furnace.
3. Dehumidify feature (MPV models only) requires ther-
mostat with DEHUM feature or a separate dehumidis- 10.
tat to get the dehumidification operation. Dehumidis-
tat is optional and not included with the furnace.
4. Underlined terminal indicates intended use for multi-
ple function terminals. 11.
5. TSIB terminals only available on MPV models.
6. Two-stage Air Conditioning or two-stage Heat Pump
capability only available with MPV models.
7. W2 furnace operation is from furnace control algo-
rithm SWl DIP switch #3 (TT) set to OFF. Furnace 12.
runs in Low Heat for 12 minutes then switches to High
Heat if heating call still exists.
24V HUM terminal on furnace control is used to power
a humidifier (on call for heat and pressure switch
closed) if no HUM thermostat option is available.
DEHUM provides a 20% reduction in airflow (when Y1
orY1 + Y2 is energized) when the furnace control DE-
HUM terminal is energized with 24V.
If no DEHUM thermostat option is available, a dehu-
midistat that has closed contacts on a call for dehu-
midify may be used
O provides a 10% reduction inairflow when Y1 or Y1 +
Y2 is energized and O is NOT energized. (J2 jumper
on TSIB must be in HP COMFORT position to get this
function. AC/HP EFFICIENCY position results in no
reduction of airflow for Y1 or Y1 + Y2 calls regardless
of O being energized or not.)
For Heat Pump/Furnace s/stems, refer to Fossil Fuel
Kit or Dual Fuel Thermostat Installation Instructions
for wiring.
HUM and DEHUM Terminal available from Thermostat. Humidifier Wiring (*MPT/MPV)
Models and Dehumidify Wiring (*MPV Models only)
TSIB
NOTE 5
NO CONNECTION [_
NO CONNECTION
SINGLE-STAGE
THERMOSTAT
I
i
i
i
I
i
i
L
TWO-STAGEorVS
FURNACE
CONTROL
NOTE 3, 9, 10
I I
._ DEHUM
24VHUM
SINGLE-STAGE
AIR CONDITIONER
OPTIONAL
HUMIDIFIER
NOTE 2
441 01 2023 01
Specifications are subject to change without notice 40