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FV Floor heating calculator - explanatory notes

01

Overview of the building

Room name = any name of the calculated room can be entered
Area of the room (m 2 ) = considered heated area of the room in m 2
Pipe spacing (mm) = spacing or density of pipe laying

Pipe spacing
(laying density)

Pipe consumption

Application

100 mm

10 m/m2

  • Bathrooms and rooms with a higher interior temperature (around 24 °C).
    In case the floor covering has a high thermal resistance (hardwood parquet, marble tiles, stone, etc.).
  • Suitable for older buildings with a very high requirement for heat (uninsulated buildings, old stone buildings).
  • Family houses, and rooms where the floor will also be cooled.

150 mm

6.6 m/m 2

  • Usual density of pipes in ordinary rooms with an average need for heat = living rooms-rooms with permanent residence of people (rooms, living room, kitchen, bedroom).
  • Ideal for a heat pump, when it will work as efficiently as possible.
  • Suitable for floating floors with higher thermal resistance.

200 mm

5 m/m2

  • Usual density of pipes in ordinary rooms with an average need for heat (corridors, halls, staircases, laundry rooms, cloakrooms).
  • Modern low-energy and passive houses. 
  • Suitable for a gas boiler that does not have an issue with a higher heating water temperature compared to a heat pump.
  • Suitable for highly conductive floor coverings.

250 or 300 mm

3.3 m/m 2

  • Industrial, warehouse spaces, workshops, garages and temperature controlled rooms.
  • Other spaces where the required lower interior temperatures are sufficient (15-18 °C).

Edge zone (m 2 ) = the edge zone is placed against the window wall or in the corner of the building with a width of 0.5 to 1.0 m. It is used when higher heat loss and heat requirement are expected in this location.

It is up to you to assess whether it is necessary, it is not necessary for modern houses.

Edge zone piping spacing (mm) = spacing or - density of piping in the edge zone (ideal spacings are 100 and 150 mm)

Add room = adds another considered room for the calculation 

Next step = next step and calculation selection procedure

02

Choice of floor heating system

The FV system roll and the FV EPS system roll are for laying in the form of TACKER clips, on both of them there is a geometry with a 5x5 cm grid for the orientation of the laying - the pipe laying spacing can be made as desired. Roll and foil are glued together.

FV NOP SOLO, FV NOP ISO, FV NOP ISO PLUS have NOP protrusions = direct laying and placement of pipes of dimensions 16, 17, 18 in the protrusions. Spacing of protrusions in the board 5 cm. NOP boards are connected to each other by the NOP protrusions of two adjacent boards over each other.

Next step = next step and calculation selection procedure

03

Pipe type and diameter

MULTIPERT-AL :

A unique 5-layer pipe combining all the advantages of polyethylene and metal pipes. The outer and inner layers are made of modern material PE-RT, modified polyethylene of medium density, which shows excellent temperature and mechanical resistance. The AL layer ensures the temperature and pressure resistance and formability of the pipe. Extremely low temperature expansion, high resistance to fracture and abrasion, perfect tightness of the oxygen barrier from EVOH. T max 95 °C - Maximum temperature of use 95 °C.

THE PIPE HAS SHAPE MEMORY, EASY SHAPING AND HIGH MECHANICAL RESISTANCE.

Quality PE-RT type II system pipes for floor, wall or ceiling heating or cooling, connections to radiators and fan coils. 5-layer construction - long-term durability and perfect tightness of the oxygen barrier from EVOH. T max 95 °C - Maximum temperature of use 95 °C.

HIGH FLEXIBILITY, AGAINST MULTIPERT-AL HAS NO SHAPE MEMORY

04

Distribution cabinet

Concealed:

Positioning and installation under the plaster / in the wall.
The cabinet is embedded in the wall, the front side with the door is parallel to the wall level.
Rear wall with fastening bracket for mounting the distributor and electrical accessories.

On plaster

Placement on the wall, the cabinet is admitted and protrudes through the depth of the structure from the wall.
Rear wall with fastening bracket for mounting the distributor and electrical accessories.

05

Other accessories/additional accessories

THM fastening bar 16-20
To store system pipes with fixation. On the back side with adhesive tape for quick attachment to the substrate. Minimum pipe spacing 50 mm, bar length 1000 mm. Universal for pipes with diameters of 16 - 20 mm. Use for pipe fixation or pipe wall mounting. ( additional accessories)

THM clip for fastening bar
Clip for anchoring the THM fastening bar. The clip securely holds the fastening bar in the EPS boards even when used in a dusty environment. ( additional accessories)

THM mixing kit
Mixing kit for underfloor heating distributor.
It is used in the case of a combination of floor heating with radiators or a circuit with a need for a higher flow rate (circulation of medium) other than for floor heating. It serves as a by-pass for heating.
Adjustable circulation pump for 100 to 200 m 2. The kit includes a control valve (bypass control valve), a Wilo circulation pump, an electric pump control unit, and a water supply thermometer. Connection 1".  

THM thermometer adverbial blue
Additional thermometer for the manifold for the return circuit (blue color). The floor heating distributor is already equipped as standard with a basic stick-on thermometer with a scale (the temperature is displayed by changing the color of the scale).
( additional accessories)

THM thermometer adverbial red
Additional thermometer for the distributor for the supply circuit (red color). The floor heating distributor is already equipped as standard with a basic stick-on thermometer with a scale (the temperature is displayed by changing the color of the scale).
( additional accessories)

THM expansion strip 100 mm × 2000 mm
Joint profile for separating individual dilating fields.
Creates permanently elastic joints in concrete and anhydrite floors
( additional accessories)

THM thermal drive
For electronic control of individual distributor valve circuits.
NC variant (no current closed). ( additional accessories)

THM room thermostat
Basic electronic temperature controller 230 V for individual rooms in combination with thermal actuators. An adapter for plaster installation is also an accessory. Working range: 5–30 °C The possibility of controlling up to 15 thermal heads.

THM distributor plug KZI 3/4"
It is used to close an unused circuit on the floor heating distributor. The possibility of creating a reserve for future expansion of the heated space.

FV ball valve 1" in red/blue design
Ball valve for closing the floor heating distributor. It is installed in front of the supply and return parts of the distributor (1 distributor = 1 blue and 1 red ball valve)


06

RESULTS

A statement with a list of the necessary material with order codes for underfloor heating as specified.

  • Fields marked with an asterisk (*) are required.

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