Danfoss FHV-A, FHV-R Data sheet

Data Sheet

FHV-A/FHV-R

Application:

FHV-A FHV-R

Ordering
Information:

The oor-heating valve (FHV) provides an
economical method of incorporating a radiant
oor heating system into an existing hot water
or radiator system. FHV self-acting regulators
are well suited to handle underoor heating
temperature in single rooms, such as bathrooms,
entry ways or kitchens.

FHV control valves are exible to use, easily
installed and are available in two versions:

FHV-A control valves are ideally suited to control
individual underoor heated rooms. The FHV-A
is placed on the supply side of a oor heating
system, and is capable of providing hydraulic
balancing via the FHV-A’s integral pre-setting
feature. In controlling the room air temperature
a standard RA 2000 operator is tted to the

When ordering the FHV assembly order the valve body, appropriate operator, tail pieces and union nuts.

Valve bodies include wall box, cover and valve

Code No. Description Cv*

003L1001 FHV-A pre-settable valve body 0.05-0.92

003L1000 FHV-R retur temperature limiting valve 1.03

*Cv is the eater ow rat e through the fully o pen valve at a pressu re drop of 1 psi. To determi ne the pressure drop t hrough the valve at o ther ow rates use th e formula: ∆P = (Q/Cv)2, where Q = water o w in GPM

FHV-A valve.
FHV-R valves are designed for systems using
oor heating in conjunction with radiators. The
valve is place on the return side of the radiant
oor system. The valve’s operator, FJVR, senses
the return uid temperature of the system and
regulates the valve appropriately. When the
FHV-R is used for a radiant heating system,
the maximum oor heated area should not be
greater than 110 sq. ft.

Note: The ow temperature must not be
permitted to exceed the maximum supplied
water temperature as recommended by the oor
heating supplier. This can be accomplished via
use of Danfoss’ 3-way (MR) or 2-way (FTC with RA
2000 or RAVV with VMT) thermostatic valve and
a circulator in the oor heating loop.

Operators

Code No. Description Temperature Range

013G 8250 RA 2000 operator for, FHV-A 45° - 86°F (7° - 30°C)

003L10 40 FJVR operator for, FHV-R 50° - 122°F (10° - 50°C)

003L10 70 FJVR operator for, FHV-R 50° - 176°F (10 ° - 80°C)

VDUIE222 © Danfoss 10/17

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Data Sheet FHV-A / FHV-B Floor Heating Valve

Ordering
Information:
(Cont.):

Spare Parts
and Accessories:

System layout:

Tail pieces and union nuts require two of each

013U0496 1/2” Union Nut

013U8608 1/2” Solder Female Tailpiece

013U0496 1/2” Male Threaded Tailpiece

Code No. Description

013G 0290 Packing gland for FHV-A

013U 0070 Packing gland for FHV-R

In laying a radiant oor heating system with the FHV valve, it is recommended to utilize the double
parallel spiral pattern otherwise known as the counter ow tube layout.

Technical
Specication:

Pre-setting:

Installed on the supply side Installed on the return side

The water supply temperature for the system
should be properly monitored to ensure the
surface temperature is appropriate for the
nished oor material.

The installation of either valves should be on a closed loop system

Maximum Flow Temperature 194 °F (90°C)

Maximum Operating Pressure 87 psi (6 bar)

Maximum Dierential Pressure (water) 8.7 psi (0.6 bar)

The maximum square footage allowed for the
FHV-R application is 110 sq. ft. Since the FHV-R
valve monitors the uid temperature and not
the air, it will not completely close. The adjusted
set temperature for the operator should be
appropriate for the nished oor material.

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VDUIE222 © Danfoss 10/17