Mount the LS-90 to wall, Hvac Set-up on screen menu

PG 6

Mount the LS-90 to wall

1.Hold the LS-90 against the wall, with the wires coming over the top above terminal block. The LS-90 will cover the hole in the wall.

2.Position LS-90 for best appearance. Use the optional stand- offs if more space for wires is needed behind the LS-90.

3.Attach the LS-90 to the wall with the screws provided.

4.If you are mounting the LS-90 to sheet rock or if you are using the old mounting holes, use the plastic anchors provided.

5.Mark �rst and drill a 3/16-in.(4.8mm) hole for the insert at each screw location, then mount the LS-90.

Screw to wall

C	W	Y	RH	G
C	W

Wall

LS-90

Wires

Wall anchor

HVAC Set-up on screen menu

With all the wires connected (including the C wire), it is time to turn the AC power back on. Do this at the breaker you used to switch it off. The LS-90 will power-up in the control OFF mode. Your LS-90 is not con�gured to operate your HVAC system yet. You must now use the menu driven HVAC SET-UP function.

IMPORTANT: Make sure the LS-90 is powered up and is in the OFF mode before set-up. (To turn

your thermostat off, press the Power button in the middle of the control bar to the right of the display and touch OFF). Heating and cooling systems must be con�gured separately.

SET-UP for NORMAL systems (not a heat pump):

1.Press the purple MENU button on the control bar and then touch HVAC SET-UP.

2.Touch to highlight HEAT in the upper left corner of the display.

3.Touch to highlight NORMAL.

4.Select the appropriate number of stages for your heating system (from 1 to 3) by touching the number of STAGES (in brackets) to highlight, and using the +/- buttons to increase or decrease.

5.Touch the appropriate FAN CONTROL setting.

Select HVAC if your heating system controls the fan (appropriate for most gas, oil, propane and similar furnaces).

Select TSTAT if you want the thermostat to control the fan (for most electric heating systems). 6. Go on to con�gure COOL or press HOME to return to the Home screen.

PG 7