Danfoss FH-WS Datasheet

Data sheet
Application:
Ordering
Information:
Accessories:
Technical Specifications:
Temperature Limitation:
FH-WS
Electronic Room Thermostat
Code No. Description
088H0024
FH-WS
Electronic
088H0034 Thermostat
Code No.
Optional floor sensor for FH-WS thermostat. Sensor provides minimum or
088H0025
Power Supply
Mounting
Wiring Requirements
Temperature Range
Temperature Differential
Ambient Temperature
Freeze Protection
Min. / Max. Floor Setting
Night Setback
Sensor FH-WS
*The floor sensor can be extended to a maximum length of 33 ft. A wire size of 18-gauge should be used as an extension to the
floor sensor.
Blue
VDSGA122 © Danfoss 03/10
The Danfoss FH-WS is a hard wired low voltage
electronic thermostat used with hydronic
heating systems. FH-WS is typically used to
control the operation of electrical zone valve
actuators in hydronic heating systems. The
thermostat senses air temperature and with
the addition of the optional floor sensor, it
is capable of floor temperature limitation.
Beneath the front cover flap is a LED that
illuminates when there is a heat demand.
Limitation tabs are built-in to allow the setting
of the minimum and maximum air temperature.
The thermostat provides a cost effective and
efficient means of controlling comfort within a
heated room.
Power Scale
°C
24 VAC,
50-60Hz
°F
Description
maximum regulation of floor temperature
24 VAC (50-60Hz)
Surface mounted
3-wire, 4-wire if optional timer is used
50° - 86°F (6° - 30°C)
± 1.75°F
32° - 122° (0° - 50°C)
40°F (4°C)
68° - 113°F (20° - 45°C)
Manual, (Automatic is possible with external timer -
not supplied)
NTC, 30 ohms 68°F (20°C), with 10 ft (3m) cable*
The setting range for the thermostat can be
limited by means of the blue and red limitation
rings located beneath the front cover. By setting
them the temperature range is reduced. The
settable limitation range is 50° - 86°F (6° -30°C).
Red
Temperature
Floor Sensor
Range
6° - 30°C
Optional
50° - 86°F
1