3
4. DIP Switch Configuration
4.1 The DIP switch is located at the bottom
right corner of the board as shown in the
drawing. (Inside the thermostat)
DIP switch S1 (3 switches) configuration
DIP
Switch
settings
FUNCTION
1 2 3
Internal temp. sensor
(Default)
ON OFF
ON
external temp. sensor
OFF
ON OFF
DIP switch S2 (4 switches) is not in use – all switches OFF
5. External sensor connection
The sensor must be MEITAV-TEC type.
N.TC. Sensor; Temperature ~ Resistance Characteristics
Temp
°
C
7.2 10.0 12.8 15.6 18.3 21.1 23.9 26.7 29.4 32.2
Temp
°
F
45 50 55 60 65 70 75 80 85 90
Res. k
115.8
100.9 88.1 77.1 67.7 59.6 52.5 46.4 41.2 36.6
The default from factory is INTERNAL SENSOR.
- Disconnect power to the thermostat 24 Vac.
- Move DIP switch S1 to external sensor position (1-off, 2-on, 3-off)
- Connect external sensor to terminals T - To.
- Reconnect power to the thermostat.
The length of the cable for the external sensor is 100 feet (30 meters) with standard cable.
If longer distance is needed then the cable MUST be shielded.
1 2 3
ON
* default
DIP switch S1
