SETUP TB6575/TB8575 SUITEPRO™ DIGITAL FAN COIL THERMOSTATS
9 62-0278—01
.
Fig. 21. Wiring diagram when missing a wire for
electromechanical retrofit (24 Vac shown).
Removing the Thermostat
WARNING
Risk of electrical shock.
Can cause severe injury, property damage or
death.
Disconnect power supply before servicing.
CAUTION
Equipment Damage Hazard.
Improper removal can damage the thermostat.
Carefully follow the thermostat removal directions.
If it is necessary to remove the thermostat from the sub-base,
refer to Fig. 22 on page 9 and perform the following steps:
1. Turn off the thermostat by pressing the system button until
OFF displays.
2. Remove the power source from the thermostat.
3. Remove the small safety screw at the bottom of the
thermostat.
4. Use both hands to pull the thermostat straight away from
the sub-base.
Fig. 22. Removing the thermostat.
SETUP
The thermostat provides an LCD display, two buttons below the
display for System and Fan control and two adjustment buttons
(Up and Down) to the right of the display. See Fig. 24.
Settings, including setpoints, are permanently retained in
EEPROM in case of a power outage.
Fig. 23 illustrates all the possible LCD display elements. Only
those elements pertinent to the current settings and status
(including the text for the two buttons, System and Fan), actually
display.
Fig. 23. LCD display with all possible elements shown.
Power-up
At power-up, the thermostat’s LCD shows all display segments
for two seconds, enters a self-test mode for a few seconds, and
then displays the current room temperature (default screen), as
shown in Fig. 24.
NOTE: If there is a temperature sensor failure or the tempera-
ture is outside of the operating range, the room tem-
perature display shows two dashes,
—
—
.
When the sensor returns to its operating range, the
temperature display resumes.
Fig. 24. LCD display showing default screen.
CAUTION
Equipment Damage Hazard.
Power overload will damage the thermostat.
The thermostat has a safety fuse rated at 15 A /
250 Vac. If the fuse blows, the thermostat must be
replaced. The fuse is not field replaceable.
This fuse is provided as a safety feature to prevent
fire if the thermostat is overloaded.
24 VAC
M27579
HEAT VALVE
FAN
COOL VALVE
REMOTE SETBACK
REMOTE SENSOR
L1
(HOT)
L2
5
3
4
1
2
1
2
REMOVE PRE-WIRED WIRE FROM TERMINAL Gm (MID FAN SPEED).
JUMPER TERMINALS Gm AND Gh (MID AND HIGH FAN SPEEDS). FAN
MEDIUM SETTING WILL OPERATE ON HIGH SPEED.
CONNECT TERMINAL C TO THE MID FAN SPEED WIRE FROM
PREVIOUS SYSTEM.
REWIRE THE PREVIOUS MID FAN SPEED WIRE TO THE NEUTRAL
CIRCUIT IN THE SYSTEM.
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD
PROTECTION AS REQUIRED.
3
4
5
R
W/Y
Y/A
GI
Gm
Gh
C
Rs
Sc
SB
Ps
M27592
M27584
Locked
Freeze Set to
Protect Setup
Set to RoomTemp
Test
Pipe
Sensor
Heat On Cool On
OffHeatAutoCool
LowMedHiAuto
Fan On
Economy
Setback
ºF ºC
ºF ºC
System
Fan
M27586
Set to
RoomTemp
Heat On
Heat
Auto
Fan On
ºF
ºF
UP AND DOWN
ARROW BUTTONS
SYSTEM
BUTTON
FAN
BUTTON
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