Trane manual LS-90 Features, 24VAC is Required, To change your Thermostat Calibration

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PG 10

Congratulations, you have successfully installed your unit. Please proceed to the OPERATING Guide to initialize the LS-90.

IMPORTANT: After you have labeled and connected your wires, and followed the correct HVAC set-up, if these check procedures do not operate your system call support at 1-877-602-5028 8am-12am EST.

LS-90 Features

SAVE ENERGY

HVAC STATUS

NORMAL
$0.	FAN
05 KWH		12:30pm
		WED
	o	TARGET
	F	77
		o
		TEMP
		HUMID
Power		23%
		HEAT
Status	Normal $.
	05/kWh

MENU

This thermostat can be used with all 24VAC and millivolt (24VAC external power) heating and cooling systems. It

cannot be used with line voltage systems. This thermostat is digital and your desired heat or cool temperatures can easily be set on the large touch screen with the +/- buttons. A minimum 4 minute off time protects heating and cooling compressors from damage. This thermostat uses a new technique called sequential staging for more comfort with faster reaction to requested temperature changes.

24VAC is Required -

This thermostat must be run on the HVAC systems 24VAC (C wire) or external 24VAC transformer connected to the C and RH terminals. The 24VAC “C” wire is the other side of the 24VAC heating transformer and can be found where the other thermostat wires connect at the wall or at the furnace. Do not use the common or ground side of the line voltage.

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Calibration -		Calibrate controls
Your thermostat was accurately calibrated at the
factory to ±1° F of actual ambient temperature.
	CALIBRATE		75o
You do have the option, however, to change the
			1 2 :3 0 pmW ED
display temperature to match that of a previous	DELTA
thermostat, or to match another thermostat			o
already in your home, from ±1 - 9°F.	FACTOR
			F
To change your Thermostat Calibration:	-2
	AC TU AL
1. Press MENU and then touch CALIBRATE				MENU
2. Use the + / - buttons to adjust the displayed	TEMP	DISPLAYED TEMP
temperature up or down, as desired.	77.	<CONTRAST 5> BACK>
3. The DELTA FACTOR that appears on the
screen will also automatically increase or

decrease for each 1° adjustment. The large display will show the modi�ed temperature reading that will be displayed on the HOME screen in normal operation.

4. Press HOME to return to the Home screen .

LCD Screen CONTRAST can be adjusted.

To change LCD Screen CONTRAST

From the CALIBRATE screen:

1.Select CONTRAST and adjust by touching the on-screen < and > controls for best viewing.

2.Press HOME to return to the Home screen.

PG 11