Carrier 58HDV installation instructions Thermostat Wiring Guide, Dehum Note

Thermostat Wiring Guide

1.These diagrams are for reference. See thermostat wiring instructions for specific terminal assignments, connections or operation.

2.Humidifier/humidistat is optional and not included with the furnace.

3.Dehumidify feature requires thermostat with DEHUM feature or a separate dehumidistat to get the dehumidification operation. Dehumidistat is optional and not included with the furnace.

4.Underlined terminal indicates intended use for multiple function terminals.

5.TSIB terminals only available on 58HDV/359BAV models.

6.Two-stage Air Conditioning or two-stage Heat Pump compatible.

7.W2 furnace operation is from furnace control algorithm SW1 DIP switch #3 (TT) set to OFF. Furnace runs in Low Heat for 12 minutes then switches to High Heat if heating call still exists.

8.24V 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.

9.DEHUM provides a 20% reduction in airflow (when Y1 or Y1 + Y2 is energized) when the furnace control DEHUM terminal is energized with 24V.

10.If no DEHUM thermostat option is available, a dehumidistat that has closed contacts on a call for dehumidify may be used

11.O provides a 10% reduction in airflow 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.)

12.For Heat Pump/Furnace systems, refer to Fossil Fuel Kit or Dual Fuel Thermostat Installation Instructions for wiring.

58HDV

	TSIB NOTE 5
NO CONNECTION
		Y1
NO CONNECTION		O
		NOTE 11

TWO-STAGE or VS
	FURNACE
SINGLE-STAGE	CONTROL
THERMOSTAT	W2
	NOTE 7	SINGLE-STAGE
W	W1
		AIR CONDITIONER
Y	Y/Y2	Y
G	G
R	R
DEHUM NOTE 3, 9, 10	DEHUM
C	COM	C
HUM	24V HUM
		OPTIONAL
		HUMIDIFIER
		24V in
		COM
		NOTE 2

A07787

Fig. 56 - HUM and DEHUM Terminal available from Thermostat. Humidifier Wiring Models and Dehumidify Wiring

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