Danfoss FH-RT Wireless Room Thermostat Installation Guide
FH-RT Wireless Room Thermostat
FH-BU Wireless Base Unit
Installation & Operating Instructions
Specification
Power
1
2
3
4
5
6
7
8
Base unit (230 V)
Order Code:
088H011901
230 V a.c.
Mode
OK
Primary voltage:
Secondary voltage:
Outputs 1-6:
230 V a.c.
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:
Max. no. of thermal actuators:
Max. no. of thermal actuators
per output:
8 (wireless)
20
4
Output 8 run-on time:
Thermal actuator & pump exercise
10 min
Once daily (approx. every 24
hours after connecting the
power supply for the first
time)
20
10
30
Settings after power failure:
Enclosure:
User settings are retained
IP20
Dimensions [mm]
Ambient temperature:
Humidity:
310 x 110 x 55
0-50°C
Less than 85%
Thermostat
Order Code:
Temperature scale:
Hysteresis:
088H012100
6-30°C +/- 2K
+/- 0.5°C
Scale accuracy:
Night set-back:
Frequency:
2K around set point
4K at 20°C
433.70 MHz
Battery life:
Battery type:
Min. 5 years
3.6 V lithium battery, 2100
mAh, size AA
Up to 30 m (radius)
2-30 min
Transmission range:
Transmission interval:
Ambient temperature:
Humidity:
0-50°C
Less than 90%
System Schematic
1
| General | Details |
|---|---|
| Name | Danfoss FH-RT Wireless Room Thermostat Installation Guide |
| Make | Danfoss |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.32 MB |
(1 votes, average: 5.00 out of 5)
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Danfoss FH-RT Manual: Questions and Answers
Danfoss FH-RT specifications
| Batteries | 3.6 V lithium battery, 2100 |
| Battery life | Min. 5 years |
| Differential | +/- 0.5°C |
| Operating temperature | 0-50°C |
| IP rating | IP20 |
| Radio frequency | 433.70 MHz |
| Wireless range | Up to 30 m (radius) |
What is the battery life of the Danfoss FH-RT?
Minimum 5 years. Installation Guide, p. 1
How do I register a thermostat with the Danfoss FH-RT base unit?
Thermostats are dormant before first use. When first registered in the base unit, they begin measuring temperature and transmitting data, automatically entering test mode for immediate transmission testing. Installation Guide, p. 2
What do the MODE and OK buttons do on Danfoss FH-RT?
MODE cycles through outputs during testing and returns to normal mode. OK activates or deactivates the selected output. Installation Guide, p. 5
What does it mean when an LED indicator starts flashing instead of staying solid?
No signal has been received from that thermostat for 2 hours. The thermal actuator output then cycles 7 minutes on, 14 minutes off. Installation Guide, p. 5
What do the LED indicators on Danfoss FH-RT show?
Each LED represents a registered thermostat channel. Flashing means no signal for 2 hours. Rapid flashing during output testing means the relay is active. Installation Guide, p. 5
Danfoss FH-RT compared with other Danfoss thermostats
| Specification | Danfoss FH-RT | Danfoss 088U0210 CF-RS |
|---|---|---|
| Batteries | 3.6 V lithium battery, 2100 | Alkaline 2xAA, 1.5V |
| Operating temperature | 0-50°C | 0-50°C |
| Radio frequency | 433.70 MHz | 868.42MHz |
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