KORAFLEX Variant F4V

KORAFLEX Variant F4V is designed for heating and cooling rooms. It is capable of high heating and cooling performance. It is designed for 4-pipe systems and is equipped with a stainless steel condensation drainage canal. The KORAFLEX Variant F4V can be controlled using a BMS (Building Management System), and are to be installed solely in dry environments.

ECONOMIC version – black lacquered galvanized steel casing, non-lacquered heat exchanger
EXCLUSIVE version – black lacquered galvanized steel casing, RAL 9005 black lacquered heat exchanger

F4V - ikonky

ECONOMIC version

galvanized steel casing RAL9005 black lacquered steel casing, lower AISI 304 stainless steel condensation drainage canal - non-lacquered,

non-lacquered Al/Cu heat exchange with bleed valve

EXCLUSIVE version

galvanized steel casing RAL9005 black lacquered steel casing, lower AISI 304 stainless steel condensation drainage canal - non-lacquered,

RAL 9005 black lacquered Al/Cu heat exchanger with bleed valve

Depth [mm] 130 mm
Width [mm] 340 mm
Length [mm] 1 200, 1 500, 2 000, 2 500, 3 000 mm
Heat output [W] from 173 W to 7 883 W
Cooling output [W] from 242 W to 1983 W
Max. operating pressure [MPa] 1.2 MPa
Max. operating temperature [°C] 110 °C
Connecting thread​ inner G 1/2"
IP rating IP 20
Cover grilles Optimal PM
picto info

Cross grille - design solutions - Cross grilles must be ordered with trench heaters, as casing must undergo alteration.

These trench heaters will be fitted with Cross frame suitable for Cross grille.

 

 Where a linear grille is required, technical consultation is necessary, as the casing may need to undergo alteration.

Linear grilles must be ordered together with trench heaters.

Heat output [W] where t1/t2/ti / EN 16430. Measurements shown in mm including U-frame.

Heat output

Height 130 / Width 340
Length Degree of rotation Heat output Input power / 24 V DC Acoustic pressure [dB(A)] Acoustic performance [dB(A)]
1200 0 0 - -
1200 1 2 25,0 33,0
1200 2 4 33,4 41,4
1200 3 9 43,4 51,4
1500 0 0 - -
1500 1 3 26,0 34,0
1500 2 5 34,8 42,8
1500 3 11 44,9 42,9
2000 0 0 - -
2000 1 5 26,8 34,8
2000 2 8 36,0 44,0
2000 3 17 46,1 54,1
2500 0 0 - -
2500 1 5 27,7 35,7
2500 2 10 37,4 45,4
2500 3 23 47,4 55,4
3000 0 0 - -
3000 1 6 28,2 36,2
3000 2 12 38,1 46,1
3000 3 29 48,2 56,2

Cooling performance

Height 130 / Width 340
Length Degree of rotation Cooling performance Input power / 24 V DC Acoustic pressure [dB(A)] Acoustic performance [dB(A)]
1200 0 - 0 - -
1200 1 2 25,0 33,0
1200 2 4 33,4 41,4
1200 3 9 43,4 51,4
1500 0 - 0 - -
1500 1 3 26,0 34,0
1500 2 5 34,8 42,8
1500 3 11 44,9 42,9
2000 0 - 0 - -
2000 1 5 26,8 34,8
2000 2 8 36,0 44,0
2000 3 17 46,1 54,1
2500 0 - 0 - -
2500 1 5 27,7 35,7
2500 2 10 37,4 45,4
2500 3 23 47,4 55,4
3000 0 - 0 - -
3000 1 6 28,2 36,2
3000 2 12 38,1 46,1
3000 3 29 48,2 56,2

Standard contents

  • galvanized steel casing RAL9005 black lacquered steel casing, lower AISI 304 stainless steel condensation drainage canal - non-lacquered
  • Economic – non-lacquered Al/Cu heat exchange with bleed valve
  • Exclusive – RAL 9005 black lacquered Al/Cu heat exchanger with bleed valve
  • aluminium U-frame, silver elox
  • metal cover plate
  • set of low-energy EC fans 24V DC
  • 24 V DC terminal block and regulator (FCR BOX)
  • levelling set screws and 4 anchors
  • spacers for correct installation and concreting
  • hardboard cover to protect trench heater from contamination
  • durable packaging, installation instructions

 

 

  REGULATION AND ACCESSORIES KORAFLEX FV

Optional accessories

  • choice of grilles
  • cross grille – design solutions – necessary to order together with trench heater
  • aluminium silver, light/dark bronze elox or other RAL colour chart lacquered U-frame
  • aluminium silver, light/dark bronze elox or other RAL colour chart lacquered F-frame
  • 24 V DC power supply
  • 24 V DC thermostat for regulation
  • 24 V DC thermoelectric actuator, 2.5 or 5 m cable length
  • NTC temperature sensor
  • external room sensor
  • infrared remote control
  • sound insulation sheet
  • raised floor structural supports
  • lockshield, thermostatic valve
  • ½"×½" 90° brass elbow for connection facilitation
  • 10, 12 or 30 cm flexible stainless steel hose
  • strengthened OSB cover for installation purposes

FRAMES 

Standard U-frame                               Optional F-frame                    Optional Cross grille frame (on request)

Optimal - rámečky

Suitable grilles

Optimal PM

KORAFLEX Variant  F4V

DEPTH 130 mm/WIDTH  340mm 

F4V 13_34 bok

 

F4V 13_34 pudorys

F4V - rozměry - 3  

CLOSED HEATING CIRCUIT

topný okruh f4v

CLOSED COOLING CIRCUIT
 

chladící okruh f4v

FV TRENCH HEATER INSTALLATION

Construction recommendations

To ensure correct operation, it is essential that the following principles are respected.
  • Trench heaters must be installed horizontally with the heat exchanger on the window side. For the grille to function correctly, the upper edge of the casing must be straight and level (not buckled or bent).
  • The maximum recommended distance of the trench heater from the wall/window is 100mm.
  • We recommend connecting the trench heater to the heating system using a lockshield and thermostatic valve. The heat exchanger connection is by an inner G½ thread. Following connection to the heating system, bleed and carry out a pressure test.
  • When concreting, the trench heater must be levelled using the set screws provided and fastened to the floor using the anchors provided. The anchors keep the trench heater in place while pouring concrete.
  • Using anchors will extend the bottom width of the trench heater by 42 mm from each side.
  • While pouring concrete, the trench heater may be weighed down.
  • While pouring concrete it is important to brace the trench heater to prevent longitudinal buckling. Trench heaters are fitted with spacers for this purpose. Following concreting, these spacers are easily removed.
  • While pouring concrete or anhydrite it is essential to seal all connection openings to prevent leakage. We also recommend insulating trench heaters against damp.
  • Where trench heaters are not concreted in, a raised floor supports are recommended to use. Standard models are not self-supporting.
  • We recommend insulating the outer side of the trench heater casing along the length of the heat exchanger with polystyrene to prevent heat loss into the floor.
  • For trench heaters with forced convection we recommend undertaking fastening and acoustic insulation by pouring thin concrete along the sides and under the base of the heater.
  • To avoid contaminating the trench heater, we recommend maintaining the protective hardboard cover in place during construction work. The cover, which is included in the standard contents, is not suitable for walking on and serves solely to protect the trench heater from contamination during installation. Strengthened OSB covers for installation purposes are available as optional extras.
  • KORAFLEX Variant F2V and F4V models with cooling and Pool-V FVP models installed in humid environments are equipped as standard with condensation drainage canals. The Variant F2V 11/20 and Pool-V models are fitted with drainage pipes facing the wall. During installation of all models, the pipe at the bottom of the trench heaters must be connected to a pipe with sufficient gradient to drain overflow water and/or condensation. We recommend installing a U-bend to prevent odour.
  • Fans are attached to the trench heater casing using magnets. For stainless steel models velcro is used. This system enables removal of the fans from the trench heater during installation to avoid damage or contamination, etc. Fans may also be removed this way for cleaning when the unit is switched off. With the exception of the Pool series, fans are installed to direct air towards the windows.
  • Electrical installation design must be carried out by suitably qualified persons in accordance with the relevant regulations.
  • Installation and servicing of the electrical installation must be carried out by persons with the  relevant electro technical qualifications.
  • Prior to commissioning, the electrical components must be thoroughly inspected in accordance with relevant regulations.

Montáž FV

1- trench heater with forced convection, 2 - heat exchanger, 3 - fan, 4 - grille, 5 - F-frame, 6 - anchors,      7 - set screws, 8 - window, 9 - floor level, 10 - grout, 11 - expansion joint, 12 - insulation, 13 - concrete, 14 - sub-floor

RAISED FLOOR INSTALLATIONS KORAFLEX FV

Raised floor installations

Structural supports for raised floor trench heater installations offer stable and effective solutions. Structural supports are manufactured from non-lacquered steel and are suitable for raised floors of a depth up to 500 mm. Structural supports are suitable for Optimal-V, EnergyVariant F2V and F4V. For structural reasons, the KORAFLEX Pool-V model is not recommended for installation into raised floors.

FV - Zdvojene podlahy - stojanky SZP-03

SZP-03 low raised floor support
Trench heaters are fitted with reinforcing bars and set screws, which enable the trench heater to be installed at the required height. Set screws must be anchored to the floor to prevent movement. Reinforcing bars are not included as standard and cannot be fitted subsequently. The screws allow setting a maximum height which is max. 30 mm higher than the trench heater itself. Recommended for raised floors with a maximum depth 30 mm greater than the unit height of the trench heater.

FV - Zdvojene podlahy - stojanky SZP-10

SZP-10 higher raised floor support
Customized solutions for all projects dealing with raised flooring. This is a more robust model of the low raised floor support, equipped with one support at the base of the trench heater. The precise technical design depends on customer's requirements. Recommended for raised floors with a maximum depth 100 mm greater than the unit height of the trench heater.

FV - Zdvojene podlahy - stojanky SZP-30

SZP-30 high raised floor support
Customized solutions for projects dealing with high raised flooring. This is a more robust model of the higher raised floor support, equipped with two supports at the base of the trench heater. The precise technical design depends on customer's requirements. Recommended for raised floors with a maximum depth 300 mm greater than the unit height of the trench heater.

TRENCH HEATER MULTIPLE INSTALLATIONS

Casing types according to water connections and lowered faces for multiple installations

Lowered trench heater casing faces are used where invisible connections are desired between convectors (multiple convectors around a room, eg. in administrative buildings, restaurants, hotels, etc.). When ordering grilles, care must be taken to include information in the order code that the grilles required are to be used with trench heaters with lowered faces. Individual KORAFLEX Pool FKP trench heater casings cannot be combined in this way, and are available in P0 models only.

Napojování FV

NUMBER OF FANS PER TRENCH HEATER  NOISE LEVELS - ACOUSTICS KORAFLEX FV 

počet motorů

ORDER CODE

Example order code: F4V-120/13/34-V1U1P0R-RT​

KORAFLEX trench heater with fan (forced convection), Variant F4V - 4-pipe model for heating and cooling, length 120 cm, depth 13 cm, width 34 cm, counter-flow non-lacquered heat exchanger, U-frame silver elox, right-hand connection, without lowered face, roll-up grille, 24 V DC regulation.

KORAFLEX 4-pipe Ventilator   length/depth/width (cm)   Heat exchanger type Heat exchanger color Frames Frame colour Connection side Lowered face For grille Regulation  
F 4 V - 120/13/34 - V 1 U 1 P 0 R -RT  

 

 

 

 

 

 

V counter-flow

1 non-lacquered
5 RAL 9005
9 other colour RAL

U U-frame
F F-frame
C for Cross grille
0 without frame

1 silver elox
2 dark bronze elox
3 light bronze elox
9 other RAL colour
0 without frame

P right

L left

0 without lowered face
1 lower face - input aide
2 lower face - opposite input
   aide
3 both sides lower

R roll-up

L* linear

RT 24V DC regulation

 

 

L* – technical alterations to convector casing

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