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FH-RT Wireless Room Thermostat
FH-BU Wireless Base Unit

Installation & Operating Instructions

Specification

Base unit (230 V) 

Order Code: 

088H011901

Primary voltage:  

230 V a.c.

Secondary voltage:  

230 V a.c.

Outputs 1-6:  

230 V a.c., 1 A max., relay  

 

controlled

Outputs 7-8:  

8 A, 230 V a.c./50 Hz, relay  

 

controlled, convertible to  

 

volt-free outputs

Max. no. of thermostats:  

8 (wireless)

Max. no. of thermal actuators:  

20

Max. no. of thermal actuators  
per output:  

4

Output 8 run-on time:  

10 min

Thermal actuator & pump exercise  

Once daily (approx. every 24  

 

hours after connecting the  

 

power supply for the first  

 

time)

Settings after power failure:  

User settings are retained

Enclosure: 

IP20 

Dimensions [mm]  

310 x 110 x 55

Ambient temperature:  

0-50°C

Humidity:  

Less than 85%

Thermostat 

Order Code: 

088H012100

Temperature scale:  

6-30°C +/- 2K

Hysteresis:  

+/- 0.5°C

Scale accuracy:  

2K around set point

Night set-back:  

4K at 20°C

Frequency:  

433.70 MHz

Battery life:  

Min. 5 years

Battery type:  

3.6 V lithium battery, 2100  

 

mAh, size AA

Transmission range:  

Up to 30 m (radius)

Transmission interval:  

2-30 min

Ambient temperature:  

0-50°C

Humidity:  

Less than 90%

System Schematic

Power

Mode

OK

1

2

3

4

5

6

7

8

80 mm 

80 mm 

60 mm 

30 mm 

10

20

30

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