RT-SVD03G-EN 65
Thermostats and Sensors
BAYSENS108A/ASYSTAT108A
Accessory Heat / Cool Zone Sensor Module (ZSM) dual set point, manual / auto changeover. Five
conductors required.
BAYSENS109A/ASYSTAT109A
Accessory Heat Pump Zone Sensor Module (ZSM) dual set point with LEDs, manual / auto
changeover. Ten conductors required.
Figure 39. BAYSENS108A/ASYSTAT108A
Figure 40. BAYSENS109A/ASYSTAT109A
2
4
3
5
Signal common
Cool setpoint (CSP)
Calibration
Pot 1 (see )Note 1
R7, 3.92 k
Note 1:
Pot 1 and
Pot 2 are
factory
calibrated.
Field
adjustment
voids
warranty.
Heat
Setpoint (HSP)
R6, 8.45 k
Auto
On
R8, 3.92 k
Calibration Pot 2 (see )Note 1
R1, 4.87 k
R2, 2.32 k
R3, 7.68 k
R4, 19.6 k
Heat
Auto
Off
Cool
RT1 thermistor,
10 k at 25°C
Zone
temperature
1
R11, zero
TB1
Mode
(Sys/Fan switch)
Cool setpoint
Pot 4,
1 k
Heat setpoint
Pot 3,
1 k
System
SW1
Fan
SW2
Part Number – SEN01513
RT1 thermistor,
10 k at 25°C
1
2
4
Calibration
Pot 1 (see )Note 1
R7, 3.92 k
Note 1:
Pot 1 and
Pot 2 are
factory
calibrated.
Field
adjustment
voids
warranty.
3
5
R6, 8.45 k
Auto
On
R8, 3.92 k
Heat Setpoint
Pot 3,
1 k
Calibration Pot 2 (see )Note 1
R1, 4.87 k
R2, 2.32 k
R3, 7.68 k
R4, 19.6 k
Heat
Auto
Off
Cool
CR2
Green
CR4
Green
CR3
Green
CR1
Red
6
7
9
8
10
LED Service
LED Heat
LED Common
LED Sys_On
LED Cool
R5, 34.8 k
EM Heat
R9, zero
Signal common
Cool setpoint (CSP)
Heat
Setpoint (HSP)
Zone
temperature
TB1
Mode
(Sys/Fan switch)
System
SW1
Fan
SW2
Cool setpoint
Pot 4,
1 k
Part Number – SEN01523
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