Danfoss FH-WS User manual

VDSGA122 © Danfoss 03/10

Data sheet FH-WS

Electronic Room Thermostat

Application:

Ordering

Information:

Accessories:

Technical Speciﬁcations:

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.

Code No. Description Power Scale Temperature

Range Floor Sensor

088H0024 FH-WS

Electronic

Thermostat

24 VAC,

50-60Hz

°C 6° - 30°C

Optional

088H0034 °F 50° - 86°F

Code No. Description

088H0025 Optional ﬂoor sensor for FH-WS thermostat. Sensor provides minimum or

maximum regulation of ﬂoor temperature

Power Supply 24 VAC (50-60Hz)

Mounting Surface mounted

Wiring Requirements 3-wire, 4-wire if optional timer is used

Temperature Range 50° - 86°F (6° - 30°C)

Temperature Diﬀerential ± 1.75°F

Ambient Temperature 32° - 122° (0° - 50°C)

Freeze Protection 40°F (4°C)

Min. / Max. Floor Setting 68° - 113°F (20° - 45°C)

Night Setback Manual, (Automatic is possible with external timer -

not supplied)

Sensor FH-WS NTC, 30 ohms 68°F (20°C), with 10 ft (3m) cable*

*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.

Temperature Limitation: 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).

Blue

Red

Data sheet

Danfoss can accept no responsibility for possible errors in printed materials and reserves the right to alter its products without notice.

Danfoss

Baltimore, MD

Toll Free: 866-375-HVAC (4822)

Tel.: 443-512-0266, Fax: 443-512-0270

www.na.heating.danfoss.com

Danfoss

Toronto, ON

Toll Free: 866-676-8062

Tel.: 905-285-2050, Fax: 905-285-2055

www.na.heating.danfoss.com

2VDSGA122 © Danfoss 03/10

FH-WS

Electronic Room Thermostat

Wiring Diagram:

Dimensions

inches (mm):

Line

Neutral

Signal

Timer

Optional

Floor

Sensor

24V, Line

24V, Neutral

Floor

Sensor

Signal

Timer

Not Used

Optional

Floor

Sensor

Neutral

Line

24 Volt

Power

Source

Optional External

Timer

(not included)

Actuator

1.1

(28)

3.2

(80)

2.4

(60)

3.0

(77.5)

100

30 35 40 45 50 55 60 65

Temperature (˚F)vs Resistance (kOhms)

Floor Sensor for FH-WS

Temperature (˚F)

Resistance (kOhms)

70 75 80 85 90 95 100 105

Floor Sensor

Characteristics:

Table of contents

Other Danfoss Thermostat manuals

Danfoss

Danfoss ECL Comfort 210 User manual

Danfoss

Danfoss RT 103 User manual

Danfoss

Danfoss DEVIreg 610 User manual

Danfoss

Danfoss living connect User manual

Danfoss

Danfoss FHV-R User manual

Danfoss

Danfoss 102E7 Assembly Instructions

Danfoss

Danfoss ECtemp 550 User manual

Danfoss

Danfoss Icon Master User manual

Danfoss

Danfoss TP5000 si range Guide

Danfoss

Danfoss ECL Comfort 310, A367 User manual

Danfoss

Danfoss TP9000 User manual

Danfoss

Danfoss ECL Comfort 210 User manual

Danfoss

Danfoss RET2000 B User manual

Danfoss

Danfoss C37 User manual

Danfoss

Danfoss 100064 User manual

Danfoss

Danfoss CF-RF User manual

Danfoss

Danfoss RT 270 User manual

Danfoss

Danfoss ECL Comfort 210 User manual

Danfoss

Danfoss LX205T User manual

Danfoss

Danfoss TP5001RF User manual

Danfoss

Danfoss SET3M Assembly Instructions

Danfoss

Danfoss ECL Comfort 210 User manual

Danfoss

Danfoss TPONE-RF User manual

Danfoss

Danfoss FMT230D Operating instructions

Popular Thermostat manuals by other brands

EWELLY

EWELLY EW-181 manual

Prolon

Prolon T1100 Hardware guide

Computherm

Computherm Q20 operating instructions

Heatmiser

Heatmiser neoStat user manual

Aube Technologies

Aube Technologies TH111GFCI-NP 240 VCA user manual

Mars

Mars HEAT CONTROLLER IR Wireless Thermostat user manual

Saswell

Saswell SAS920XWHB-7-S-RF User manual and warranty card

Aircalo

Aircalo TFP1-ET85P2 operating manual

Honeywell

Honeywell CM721 user manual

Carrier

Carrier DEBONAIR 33CS Installation and operating instructions

Lennox

Lennox iHarmony Zone Thermostat Installation and setup guide

Gemtech

Gemtech GT7000 Operation

Rollei

Rollei Smartes 45000 manual

Sinope

Sinope TH1300RF user guide

Honeywell

Honeywell RLV4305 owner's guide

Honeywell

Honeywell Prestige 2.0 THX9421 manual

NuTone

NuTone NTBZ48 Installation & operation guide

Stelpro

Stelpro MAESTRO ASMT402AD user guide