Filter
Top Products
8
PG 8
SET-UP for NORMAL A/C cooling systems:
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.
5. Press HOME to return to the Home screen.
SET-UP for HEAT PUMP systems:
1. Press MENU and then touch HVAC SET-UP.
2. Touch HEAT in the upper left corner of the display.
3. Touch HEAT PUMP.
4. Select the number of stages of compression for your heat pump system (1
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.
12:30pm WED 77
.
HEAT PUMP
HEAT or COOL
NORMAL
FAN CTRL TSTAT
AUXILIARY
ELECT or GAS-OILAUX
BACK>
HVAC SET-UP
STAGES
[1]
[1]
[NONE]
9
PG 9
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:
1. Press the mode control
and select HEAT.
2. Press the
+ button to raise the target temp to 90
o
F. Allow the
system 2 minutes to respond
3. Verify that heat is blowing from the system.
4. Return mode control
to OFF (leave OFF for 4 minutes before checking COOL)
To check COOL mode (do not operate AC if outside temp is below 65
o
: )F
1. Press the
mode control and select COOL.
2. Press the blue
- button to lower the cool target temperature to 50
o
F.
Allow the system 5 minutes to respond.
3. Verify that cool air is blowing from the system.
4. Return
mode to OFF
SAV
E
E
N
E
RG
Y
HVAC
STAT
U
S
M
EN
U
NORMAL
$0.05 KWA
Power Status Normal $.05/kWh
EAT
12:30pm
5/25 WED
TARGET
77
o
TEMP
HUMID
23
%
F
A
N
o
F
Temperature
+ / - Buttons
Mode
control
Fan
control
H