(1) Power button
(2) System switch
(HEAT, COOL)
(3) Fan switch
(AUTO, ON)
(4) Sleep operation button
(5)
▲
Raises Temperature setting
(6)
▼
Lower Temperature setting
(7) Room temperature
(8)
Shows temperature display in
℃
or
℉
(9) Setting temperature
(10) Indicate fan switch position
(11)
Heat on
shows when the thermostat
is calling for heat
Cool on
shows when the thermostat
is calling for cool.
(12)
1
: Shows when thermostat is in the 1st
stage cool or heat mode.
1+2
:Shows when both stages begin to
operate in cool or heat.
(13) Shows system mode
(14) Shows thermostat is in configuration
mode.
I
NSTALL THE THERMOSTAT
ATTACH THERMOSTAT BASE TO WALL
1.. Remove 2 screws from the bottom of
thermostat. Gently pull the control panel
straight off the base. Forcing or prying on the
thermostat will cause damage to the unit.
2. Connect wires beneath terminal screws on
power supply module using appropriate
wiring schematic. See figure 4
3. Push power base into 86mmX86mm
conduit box.
4. Using two mounting screws mount the power
base to the wall. Place a level against bottom
of base, adjust until level, and then tighten
screws. (Leveling is for appearance only and
will not affect thermostat operation.)
5. Replace control panel on the power base
and fix power base and control panel by
removed two screws in item 1
WIRING DIAGRAM
Screw for mounting thermostat to conduit box
Figure 3
Screw for fixing control panel and power base
Panel base
Control panel
R
9
2nd STAGE
HEATING
Y1
W1
G
Y2
W2
C
FAN CONTROL
CIR CUIT
6
5
2nd STAGE
COOLING
4
1st STAGE
HEATING
2
24VAC
COMMON
1st STAGE
COOLING
2 4 V A C
3
1
7
8
Figure 4
2
Summary of Contents for ONX908MTW-0/24V
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