TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS
62-0311—05 8
.
Fig. 13. Wiring diagram when missing a wire for
electromechanical retrofit (120/240 Vac shown).
24 Vac Wiring Diagrams (TB8575)
For the TB8575A1000 model, a 24 Vac Class 2 NEMA
rated transformer must be used.
Fig. 14. Two pipes Heat-only wiring diagram (24 Vac
shown).
Fig. 15. Two pipes Cool-only wiring diagram (24 Vac
shown).
Fig. 16. Two pipes (Heat or Cool) Manual Changeover
wiring diagram (24 Vac shown).
M31328
HEAT VALVE
FAN
COOL VALVE
REMOTE SETBACK
REMOTE SENSOR
L (HOT)
3
4
5
5
1
2
1
2
REMOVE PRE-WIRED WIRE FROM TERMINAL 5 (MID FAN SPEED).
JUMPER TERMINALS 5 AND 6 (MID AND HIGH FAN SPEEDS). FAN
MEDIUM SETTING WILL OPERATE ON HIGH SPEED.
CONNECT TERMINAL 7 TO THE MID FAN SPEED WIRE FROM THE
PREVIOUS SYSTEM.
REWIRE THE PREVIOUS MID SPEED FAN WIRE TO THE NEUTRAL
CIRCUIT IN THE SYSTEM.
CHANGE INSTALLER SETUP IS CODE 9 TO 2 FOR
2 SPEED FAN CONTROL.
3
4
N
L
W/Y
Y/A
GI
Gm
Gh
N
Rs
Sc
SB
Ps
24 VAC
M27573
HEAT VALVE
FAN
L1
(HOT)
L2
1
REMOTE SENSOR
REMOTE SETBACK
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
R
W/Y
Y/A
GI
Gm
Gh
C
Rs
Sc
SB
Ps
24 VAC
M27574
COOL VALVE
FAN
L1
(HOT)
L2
1
REMOTE SENSOR
REMOTE SETBACK
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
R
W/Y
Y/A
GI
Gm
Gh
C
Rs
Sc
SB
Ps
24 VAC
M27575
VALVE
FAN
L1
(HOT)
L2
1
REMOTE SENSOR
REMOTE SETBACK
1
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND
OVERLOAD PROTECTION AS REQUIRED.
R
W/Y
Y/A
GI
Gm
Gh
C
Rs
Sc
SB
Ps
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