Trane LS-90 manual SET-UP for HEAT PUMP systems, Check HVAC system, Touch HEAT PUMP

SET-UP for NORMAL A/C cooling systems:

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PG 8

1.	Press MENU and then touch HVAC SET-UP.
2.	Touch and highlight COOL in the upper left corner of the display.
3.	Select the number of stages of compression for your cooling system (1 or 2) by touching the
number of STAGES and using +/- buttons to increase or decrease.
4.	Touch to select the appropriate FAN CONTROL setting HVAC or TSTAT.
NOTE: Most cooling systems require that the thermostat TSTAT control the fan.			12:30pm WED 77.
5.	Press HOME to return to the Home screen.	HVAC SET-UP
SET-UP for HEAT PUMP systems:		HEAT or COOL		STAGES
		NORMAL
				[1]
			[1]
1.	Press MENU and then touch HVAC SET-UP.	HEAT PUMP
		AUXILIARY		[NONE]
2.	Touch HEAT in the upper left corner of the display.	AUX ELECT	or GAS-OIL
3.	Touch HEAT PUMP.	FAN CTRL TSTAT
4.	Select the number of stages of compression for your heat pump system (1				BACK>

or 2) by touching the number of STAGES, and using the +/- buttons to increase or decrease. NOTE: Most heat pump systems have one stage of compression.

5.If you have AUXILIARY heat, touch the number of stages (default is [NONE] ) use the +/- buttons to select 1-2 stages. (NOTE: The LS-90 controls a maximum of 3 stages total between pump and AUX.)

6.(If you have AUX) Select the type of auxiliary heat that you have - Electric or Gas-Oil.

NOTE: Most heat pump systems have electric heat strips for auxiliary heat.

7.Fan Control is set by the LS-90 (tstat) for heat pumps.

8.Press HOME button to return to the Home screen.

NOTE: For heat pump system your cooling is already con�gured since the heat pump unit provides both heating and cooling.

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Check HVAC system

Follow these procedures to verify you have correctly installed the LS-90.

To check Fan (If you connected the G wire - fan relay):

1.Touch the FAN icon on the HOME screen and select ON.

2.Verify that air is blowing from the system. Return fan to AUTO selection for normal operation. Press HOME.

To check HEAT mode:

Fan					Temperature
control
						+ / -	Buttons
ENERGY	NORMAL
SAVE	$0.	05
			KWA				FAN	12:30pm
								5/25 WED
								o	TARGET
								F	77
									o
									TEMP
									HUMID
HVAC	Power			Status				H	23%	M
STATUS											ENU
						Norma l		$.	EAT
								05/kWh

1.Press the mode controland select HEAT.

2.Press the + button to raise the target temp to 90oF. Allow the system 2 minutes to respond

3.Verify that heat is blowing from the system.

4.Return mode controlto OFF (leave OFF for 4 minutes before checking COOL)

To check COOL mode (do not operate AC if outside temp is below 65oF):

1.Press themode control and select COOL.

2.Press the blue - button to lower the cool target temperature to 50oF. Allow the system 5 minutes to respond.

3.Verify that cool air is blowing from the system.

4.Returnmode to OFF

Mode control

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