Fonterra Reno
For Fonterra radiant heating and cooling systems
Year built (from): | 14.12.2009. |
Trade mark rights exist for this document; for further information, go to viega.com/legal .
The information in this instruction manual is directed at the following groups of people:
Heating and plumbing experts and trained personnel
Individuals without the abovementioned training or qualification are not permitted to mount, install and, if required, maintain this product. This restriction does not extend to possible operating instructions.
The installation of Viega products must take place in accordance with the general rules of engineering and the Viega instructions for use.
Warning and advisory texts are set aside from the remainder of the text and are labelled with the relevant pictographs.
This symbol warns of possible life-threatening injury.
This symbol warns of possible serious injury.
This symbol warns of possible injury.
This symbol warns of possible damage to property.
This symbol gives additional information and hints.
This instruction for use contains important information about the choice of product or system, assembly and commissioning as well as intended use and, if required, maintenance measures. The information about the products, their properties and application technology are based on the current standards in Europe (e.g. EN) and/or in Germany (e.g. DIN/DVGW).
Some passages in the text may refer to technical codes in Europe/Germany. These should serve as recommendations in the absence of corresponding national regulations. The relevant national laws, standards, regulations, directives and other technical provisions take priority over the German/European directives specified in this manual: The information herein is not binding for other countries and regions; as said above, they should be understood as a recommendation.
The following standards and regulations apply to Germany / Europe and are provided as a support feature.
Scope / Notice | Regulations applicable in Germany |
---|---|
Determination of bending tensile and compression strength | DIN EN 13892‑2 |
Use of system panels in damp locations | Merkblatt Zentralverband des Deutschen Baugewerbes (ZDB) |
Fire rating class (A1) | EN 13501‑1 |
Fire rating class (A2) | DIN 4102‑1 |
Operating conditions (permissible pressures) | ISO 10508 |
Scope / Notice | Regulations applicable in Germany |
---|---|
Installation of underfloor heating | DIN EN 1264‑4 |
Scope / Notice | Regulations applicable in Germany |
---|---|
Installation of underfloor heating | DIN EN 1264‑4 |
Minimum heat insulation requirements | Gebäudeenergiegesetz (GEG) |
Scope / Notice | Regulations applicable in Germany |
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Flatness tolerances in surface-finished floors | DIN 18202, Table 3, line 3 |
Scope / Notice | Regulations applicable in Germany |
---|---|
Flatness tolerances in surface-finished floors | DIN 18202 Table 3, line 3 |
Execution of the construction work | Vergabe- und Vertragsordnung für Bauleistungen (VOB), part C |
Flooring work | DIN 18365 |
Scope / Notice | Regulations applicable in Germany |
---|---|
Pressure test | DIN EN 1264‑4 |
Damage due to incorrect installation or insufficient communication
Viega radiant heating and cooling systems should be dimensioned by a planning engineer and may only be installed and commissioned by authorised specialist companies.
Observe the following instructions during execution:
Mount the fitting in accordance with the instructions and agreement of the planning engineer employed by the builder.
Pay attention to the product instructions of the components used.
Agree the beginning of the mounting and the handover to the subsequent workers with the site management.
Document the mounting process and the results of the final leakage test.
Hand over the planning documentation used as well as the mounting and testing reports to the site management after completion of the work.
Fonterra Reno is a dry-construction radiant heating and cooling system for floors in residential and commercial premises, offices and medical practices. The heating pipes PB 12 x 1.3 mm are laid in pre-assembled 18 mm thick system panels made of plaster board; they are suitable for heating circuit lengths of up to 80 m. The pipes can be covered with construction panels, casting compound or tile surface. Due to the low construction height, Fonterra Reno is particularly suitable for old buildings and for refurbishment purposes.
In addition to these instructions for use, the processing guidelines for the building materials used must be observed.
Short drying times, fast further processing
Low surface weight
Suitable as a pure dry construction system, no permeating of moisture into the basic structure
Easy and quick mounting of the system panels
Meandering pipe installation at a clearance of 100 mm
Fonterra Reno offer three different processing options and a multitude of combinations for the floor sub-construction:
Installation of a construction panel
Construction heights of 28 mm and up are possible
Suitable for all types of floor coverings
No waiting times
Direct tiling
Construction heights of 21 mm and up are possible
Suitable for tile surface
Short waiting times
Covering with casting compound
Construction heights of 21 mm and up are possible
Suitable for all types of floor coverings (except solid parquet)
Application of primer and casting compound
Can be walked on two to four hours after application of the casting compound
After 24 hours, ready for laying tiles, PVC or carpet; after three days for laying laminate or parquet
Use |
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Material |
Dimensions L x W x H |
Model |
Fonterra Reno basic panel |
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for dry underfloor heating with milled grooves for PB 12 pipe |
Gypsum board |
1000 x 620 x 18 mm |
1238.10 |
Use |
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Material |
Dimensions L x W x H |
Model |
Fonterra Reno manifold panel |
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for safely guided pipe-laying in front of the manifold, 4–10 heating circuits Depending on the quantity of heating circuits and positioning usable as 2- or 3-part |
Gypsum board |
3-part, 310 x 620 x 18 mm each |
1238.12 |
Use |
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Material |
Dimensions L x W x H |
Model |
Fonterra Reno top panel |
---|
for dry underfloor heating with milled grooves for PB 12 pipe |
Gypsum board |
620 x 310 x 18 mm |
1238.11 |
Use |
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Material |
Dimensions L x W x H |
Model |
Plaster board |
---|
for dry underfloor heating unmilled, for inactive areas |
Gypsum board |
1000 x 620 x 18 mm |
1238.2 |
Use |
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Material |
Pipe size |
Model |
Pipe PB |
---|
For Fonterra radiant heating and cooling |
Polybutene (red) |
Ø 12 x 1.3 mm |
1405 |
Use |
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Material |
Pipe size |
Model |
Pipe PB in protective pipe |
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For Fonterra radiant heating and cooling |
Pipe: polybutene (red) Protective pipe: polyethylene protective pipe (black) |
Pipe: Ø 12 x 1.3 mm Protective pipe: Ø 21 mm |
1203 |
Use |
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Material |
Pipe size |
Model |
Protective pipe for joints |
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For Fonterra pipe (Ø 12 mm) in the joint area |
Polyethylene (black / slit) |
d 18 |
1404 |
Use |
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Material |
connection |
Dimension |
Model |
connection screw fitting |
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For Fonterra radiant heating and cooling, manifold DN 25 |
nickel-plated brass |
With euro cone and clamping connection |
12 x 1.3 mm |
1037 |
Use |
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Material |
connection |
Dimension |
Model |
Plug-in piece with SC‑Contur |
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For Fonterra radiant heating and cooling Adapter for PB pipe 12 x 1.3 mm to Sanpress, Sanpress Inox, Profipress (d15) |
Gunmetal/silicon bronze |
With press connection and plug-in end |
12 x 1.3 mm |
1213 |
Use |
---|
Material |
connection |
Dimension |
Model |
Adapter |
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For Fonterra radiant heating and cooling, PB pipe 12 x 1.3 mm onto external thread |
Gunmetal/silicon bronze matt nickel-plated |
With press connection and R-thread, ½ inch |
12 x 1.3 mm |
1213.5 |
Use |
---|
Material |
connection |
Dimension |
Model |
Coupling with SC‑Contur |
---|
For Fonterra radiant heating and cooling, connection of PB pipe 12 x 1.3 mm |
Gunmetal/silicon bronze |
With press connection |
12 x 1.3 mm |
1223 |
Use |
---|
Material |
connection |
Dimension |
Model |
Connection screw fitting with SC‑Contur |
---|
For Fonterra radiant heating and cooling, PB pipe 12 x 1.3 mm, manifold DN 25 |
Gunmetal/silicon bronze nickel plated |
With press connection and euro cone |
12 x 1.3 mm |
1236 |
Use |
---|
Model |
Pipe guide d12 |
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for diversion of the pipe in the manifold area |
Model 1272 |
Use |
---|
Model |
Press jaw d12 |
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for press machines for establishing press connections with Fonterra press connectors |
Model 2799.7 / 2484.7 |
Use |
---|
Model |
hand press tool |
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for establishing press connections with Fonterra press connectors for Fonterra pipes PB 12 x 1.3 mm |
Model 2782 |
Use |
---|
Model |
Pipe shear |
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for cutting all sizes of Fonterra pipes to length with protective pipe cutter |
Model 5341 |
Use |
---|
Model |
Spreading tool |
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for casting compound, setting of the covering height, with pins height-adjustable from 0–10 mm |
Model 1200.2 |
Use |
---|
Model |
Rubber squeegee |
---|
for flush levelling of the casting compound |
Model 1200.3 |
Use |
---|
Model |
Pipe reel |
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for Fonterra radiant heating and cooling, pipe coils holder Folding, detachable, three-armed, with stabilising spring, carrying capacity max. 70 kg |
Model 1452 |
Use |
---|
Model |
Drywall screw |
---|
for fastening on plaster board, length 25 mm |
Model 1259 |
Use |
---|
Model |
Joint protection 12 |
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for Fonterra radiant heating and cooling, joint area self-adhesive, suitable for 12x1.3 mm PB-pipe |
Model 1273 |
Use |
---|
Model |
Edge insulation strip 90/10 |
---|
for Fonterra radiant heating and cooling, special application PE foam perforated, self-adhesive |
Model 1456.1 |
Use |
---|
Contents |
Consumption |
Model |
Fonterra Reno casting compound |
---|
for Reno panel, internal area, for all types of floor covering, layer thickness 2–10 mm calcium sulphate bonded |
25 kg |
10 kg/m2 (usage at 3 mm overlapping) |
Model 1237.6 |
Use |
---|
Contents |
Consumption |
Model |
Fonterra Reno primer |
---|
for Reno panel, EC1 – extremely low-emission, one-pieced, water-dilutable |
1 kg |
75 g/m2 |
Model 1235.23 |
Use |
---|
Contents |
Consumption |
Model |
Fonterra Reno screed adhesive |
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for Fonterra Reno system panel and plaster boards, not labelled |
1 kg |
100 g/m2 |
Model 1237.4 |
jigsaw
Circular hand saw with guide rail and extraction
Agitator (for casting compounds)
High mixing bucket 30 l
Dimension |
---|
Weight |
Weight incl. casting compound |
Material |
Fire rating class 1) |
Pipe clearance |
Max. permissible supply temperature |
Max. heating circuit length |
Damp rooms 1) |
Top panel: 620 x 310 x 18 mm Basic panel: 620 x 1000 x 18 mm Manifold panel 3-piece: 620 x 310 mm per panel |
Top panel: approx. 15 kg/m2 Basic panel: approx. 19 kg/m2 Manifold panel 3-piece: approx. 3.5 kg/panel |
approx. 35 kg / m² |
Gypsum board |
A1 / A2 |
100 mm |
50 °C |
80 m / 8 m2 |
suitable for residential areas |
1) | according to the applicable directives, see Regulations from section: Technical data |
Dimensions |
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Minimum bending radius |
Operating condition 1) |
Max. operating temperature |
Mounting temperature |
Water content |
Heat conductivity λ |
Linear expansion coefficient |
Weight |
12 x 1.3 mm |
5 x da |
Class 4: 1 MPa (10 bar) Class 5: 0.8 MPa (8 bar) |
95 °C |
min. -5 °C |
0.069 l/m |
0.22 W/(m·K) |
1.3 x 10-4 K-1 |
50 g/m |
1) | according to the applicable directives, see Regulations from section: Technical data |
Pressure resistance class 1) |
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Processing temperatures (up to one week after processing) |
Processing time at 20 °C and 65 % relative humidity |
Colour |
Mixing ratio |
Layer thickness |
Usage at 3 mm with covering |
Can be walked upon after |
Cannot be covered for at least |
CA-C25-F7 / C25 |
10–30 °C (air) |
10–25 °C (subfloor and material) |
25‑30 minutes |
whitish-grey |
6.25 l water |
2–10 mm |
approx. 10 kg/m2 |
approx. 3 h |
24 h |
1) | according to the applicable directives, see Regulations from section: Technical data |
The following floor sub-constructions correspond to the applicable directives for surface heating, also see Regulations from section: Floor structures with insulation . A level, firm, non-swinging sub-construction is the precondition for all these floor sub-constructions, Underground .
Installation situation I |
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over a heated room Rinsulation = 0.75 m2K/W |
Installation situation II + III + V |
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over an unevenly heated room, over an unheated room, and against soil Rinsulation = 1.25 m2K/W |
Installation situation IV |
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against outside air Rinsulation = 2.0 m2K/W |
The following combinations of insulation and supporting layer do not correspond to the minimum requirement specified in the applicable directives, see Regulation from section: Special constructions with reduced insulation layers . These special sub-constructions must be individually coordinated or agreed.
A level, firm, non-swinging sub-construction is the precondition for all these floor sub-constructions, Underground .
Fonterra Reno system panels on PCI rigid foam supporting panels |
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with direct tiling |
Fonterra Reno system panels on PCI rigid foam supporting panels |
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with wood or carpet as floor covering |
Fonterra Reno system panels on gypsum fibre construction panel |
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with direct tiling |
Fonterra Reno system panels on gypsum fibre construction panel |
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with wood or carpet as floor covering |
Fonterra Reno system panel with casting compound |
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with direct tiling |
Fonterra Reno system panels with casting compound |
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with wood or carpet as floor covering |
Fonterra Reno system panel on old-building floor boards |
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with gypsum fibre screed element and bulk product |
Fonterra Reno system panel on old-building floor boards |
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with insulation and levelling compound |
Observe the following instructions when laying Fonterra Reno system panels:
Lay the top panels in the room at a right angle to the connection pipes or pursuant to the installation plan.
Determine the number and arrangement of the top panel rows from the table in the following.
Lay the panels on a clean and level underground only, see Underground .
Start laying the manifold panels or top panel rows in the room where the manifold is installed.
In narrow rooms such as halls, it is recommended to arrange the basic panels lengthwise, or to use top panels only.
Lay Fonterra Reno system panel offset in staggered bond formation. Avoid cross joints (≥ 20 cm offset).
Usually, residual panels of one row can be arranged as the first element of the new row.
The pipe guiding grooves of adjacent system panels must fall in line.
Implement joints and straight-through forms pursuant to the laying plan.
Use keyhole saws and circular hand saws with extraction to make cutouts in system panels and cut them to length.
The number of the top panel rows is defined by the number of heating circuits. The table below helps you to find the most favourable panel arrangement:
Heating circuits | Row of top panels | Area top panels / | Top panel | PCI panel |
---|---|---|---|---|
1 | 1 | 0.31 m2/m | ½ top panel | entire PCI panel |
2 | 1 | 0.31 m2/m | ½ top panel | entire PCI panel |
3 | 2 | 0.62 m2/m | entire top panel | panel 45 cm wide |
4 | 3 | 0.93 m2/m | ½ top panel | panel 45 cm wide |
5 | 4 | 1.24 m2/m | entire top panel | panel 45 cm wide |
6 | 4 | 1.24 m2/m | entire top panel | panel 45 cm wide |
Lay the panels as specified in the table because a joint offset of minimum 15 cm must be provided, in particular in connection with PCI rigid foam supporting panels.
Start laying the top panels in the left corner of the room, at a right angle to the wall with the connection pipes.
Start the first row with an entire system panel. Start the second row with a half system panel, .
Start laying the basic panels at the left side of the room, proceeding from the top panels to the opposite wall. The last basic panel of each row must have pipe deflections.
Use residual plates ≥ 20 cm in the next row. Pieces can be used later for fitting in between (see panels 4b and 7b).
Avoid cross joints (≥ 20 cm offset).
The pipe guiding grooves of adjacent system panels must fall in line.
Mark the heating circuit arrangement on the system panels.
Use a vacuum cleaner to clean the pipe guiding grooves.
Start laying the pipes at the heating circuit farthest away from the supply lines or the door - here: from left to right.
When using casting compound, prime the system panels first, Manufacturing a pipe cover with casting compound .
Wall projections in the area of the top panel rows:
Arrange additional top panels below the wall projection.
Columns in the area of the basic panels:
Arrange a row of top panels in front of and behind the column. At least two free pipe guiding grooves are required.
Connection pipes to narrow rooms running laterally to the pipe installation direction are laid in additional top panels.
The number of additional top panels is defined by the number of heating circuits.
Use additional top panels to balance out sloped sides in rooms with irregular geometries.
The Fonterra Reno manifold panel comes as a 3-piece mounting set.
Combine the parts in accordance with the number of heating circuits:
1 to 3 heating circuits: No manifold panel is required (use top panel).
4 to 6 heating circuits: Use the two outer parts only.
7 to 10 heating circuits: Use all three parts.
In the area of the manifold, arrange at least one row of top panels before the manifold panel.
Use pipe guides to make the weave-out from the concealed manifold cabinet.
In the area of the manifold, pay special attention to proper sealing of corners, edges, and joints to make sure no casting compound can flow behind the system panels.
Use the two side elements of the manifold panel.
Guide the connection lines to the manifold as shown in the illustration.
With a manifold located in a corner, you need to use all three panel elements also for six heating circuits.
Use all three elements of the manifold panel.
Guide the connection lines to the manifold as shown in the illustration.
The following notes apply when working with plaster board.
Transport system panels in vertical position.
Store system panels in flat position in a dry and frost-free environment.
For acclimatization, store system panels at the installation site for at least twelve hours before use.
For handling casting compound, observe the following note:
Do not store the casting compound below 5 °C.
For handling screed adhesive, observe the following note:
Store the screed adhesive in a temperature range of 5–25 °C.
Observe the manufacturer's information for all products used.
The following structural requirements must be met before installing the floor heating panels:
Windows and doors have been installed.
Electrical installations (wall breaking, empty pipe installation etc.), sanitary and other pipeline installations have been completed.
Plastering work has been completed.
The underground must be firm, dry, and non-resilient.
The underground must be clean (swept clean).
The underground must be level and have no raised points.
Any irregularities in height must be compensated for, e.g. with levelling compound or a suitable filling material (note levelness tolerances).
Apply an intermediate layer on top of filling material.
The levelness of the underground is particularly important for the installation. Observe the levelness tolerances pursuant to the applicable regulations, see Regulations from section: Structural preconditions .
Use a levelling staff (2 to 4 m, depending on room size) to check the surface for high points.
Determine the measuring point interval (I1, I2) between two high points (x1 and x2).
Use a V-head to determine the interval between levelling staff and low point (gauge for bore hole t1, t2).
Compare the resulting values to the values in the table below.
Measuring point interval l1, l2 [m] | Limit value gauge for bore holes t1, t2 [mm] |
---|---|
0.5 | < 3 |
1.0 | < 4 |
1.5 | < 5 |
2 | < 6 |
3 | < 8 |
4 | < 10 |
Repeat this process to check all the high points in the room. Deviations beyond the tolerances must be compensated before laying the system panels.
Line | Reference | Gauges for bore holes as limit values in [mm] with measuring point distances in [m] up to | ||||
---|---|---|---|---|---|---|
0.1 | 1 | 4 | 10 | 15 | ||
3 | Finished floor surfaces, e.g. screeds as fit-for-use screeds, screeds for reception of floor coverings, floor coverings, tile surfaces, levelled-out and glued coverings | 2 | 4 | 10 | 12 | 15 |
4 | Same as line 3 but with stricter requirements. | 1 | 3 | 9 | 12 | 15 |
The mean relative humidity should be less than 70%.
The room temperature should be between 5 and 30 °C.
Building waterproofing is required for surfaces bordering the soil.
"Waterproofing against soil moisture" and "non-pressing water" must be specified by the building planner and provided before applying the screed. This work should be executed by a specialist company.
It is imperative that polystyrene heat and footfall sound insulation is protected with a PE foil against building waterproofing containing bitumen.
With heating screeds, the edge insulation strips must allow for at least 5 mm of movement. Corresponding edge insulation strips must be installed at the walls and other upright building elements, such as door frames or columns.
If you intend to process the Reno system panel with casting compound, then pay special attention to the leak tightness of edges and corners to prevent casting compound from flowing behind the panels.
Attach the edge insulation strip from the insulation of the upper edge of the covering.
The adhesive layer and the trailing sheet of the edge insulation strip must not be above the height of the finished floor covering.
Lay the trailing sheet free of tension over the entire surface in the room.
Use adhesive tape to seal the foil and the edge insulation strip tightly at the ends.
Let the foil overlap at the edges.
Attach additional sealing foil at the external edges.
Arrange the film flaps of the edge insulation strip under the base layer.
Expansion joints are required with room lengths of 15 m. Expansion joints are also required with marked projections (door passages, wall projections, constrictions). These joints separate the system surface down to the insulation below; they are generated by means of a suitable expansion joint profile.
Movement joints of building parts must be constructed along the same lines in the entire structure. Also, a movement joint is required in case of change of material in the sub-constructions or the floor coverings.
Before the start of the work, the final position of the expansion or movement joints must be determined on site by the planner in coordination with all stakeholders.
Heating pipes installed in door passages over expansion joints must be equipped with joint protection (model 1273).
The on-site conditions allowing, the connection pipes can alternatively be guided through the brick wall in a protective pipe.
With large-format tiles (edge length > 60 cm), the expansion joints must be coordinated separately with the planning department.
Gypsum fibre construction panels can be arranged on the Fonterra Reno system panels as additional underground for the floor covering. This floor construction has a high carrying capacity and is suitable for all types of floor covering.
Pressure test
Check the installation for leak tightness before covering the pipes. Add the pressure test report to the building documentation, Flushing / leakage test .
The floor has been prepared as follows:
Fonterra Reno system panels have been properly laid.
Edges and joints have been sealed.
The Fonterra Reno system panels have been cleaned and are free of dust.
The pipelines have been installed and connected to the manifold.
The pressure test has been successfully completed.
Apply Fonterra Reno screed adhesive (model 1237.4) at a distance of 10 cm diagonal to the pipe guiding grooves on the Fonterra Reno system panels.
Apply the first line of adhesive in approx. 3 cm distance from the panel edge.
Turn the gypsum fibre construction panels by 90° to the Fonterra Reno basic panels and lay them down.
Ensure that the edges of the gypsum fibre construction panels do not end on a pipe groove.
Apply Fonterra Reno screed adhesive in a distance of max. 1 cm along the connecting ends of the gypsum fibre construction panels.
Lay down the gypsum fibre construction panels with a joint offset of ≥ 20 cm.
Make sure to provide a panel offset to the Fonterra Reno system panels below of ≥ 20 cm. With top panels, a 15 cm offset is sufficient.
There are two different ways to fasten the gypsum fibre construction panels (1 or 2):
(1) Use drywall screws (model: 1259) spaced at ≤ 30 cm to fasten the gypsum fibre construction panels.
(2) Use expanding clamps spaced at ≤ 20 cm to fix the gypsum fibre construction panels.
Tiles may be attached directly onto Fonterra Reno system panels using flexible adhesive in connection with fabric reinforcement. This floor construction is characterised by particularly efficient heat transmission and a low installation height.
Pressure test
Check the installation for leak tightness before covering the pipes. Add the pressure test report to the building documentation, Flushing / leakage test .
The floor has been prepared as follows:
Fonterra Reno system panels have been properly laid.
Edges and joints have been sealed.
The Fonterra Reno system panels have been cleaned and are free of dust.
The pipelines have been installed and connected to the manifold.
The pressure test has been successfully completed.
Fill the pipe guiding grooved with flexible adhesive (1).
Apply another coat of flexible adhesive as well as fabric reinforcement with a mesh width of 6‑10 mm (2).
The surface can be tiled immediately afterwards.
Fonterra Reno system panels covered with Fonterra casting compound create a sound floor construction suitable for all types of floor covering.
Pressure test
Check the installation for leak tightness before covering the pipes. Add the pressure test report to the building documentation, Flushing / leakage test .
The floor has been prepared as follows:
Fonterra Reno system panels have been properly laid.
Edges and joints have been sealed.
The Fonterra Reno system panels have been cleaned and are free of dust.
The pipes havenot been installed yet.
Spread the primer (model 1235.23) over the entire area of the panel surface and into the pipe guiding grooves until you reach the required colour value of the control chart.
For best results, apply with a pressure sprayer with a fine, cone-shaped spray jet.
Prepare the mixture in the ratio specified in the product information.
Required room temperature: 5–30 °C
Required panel temperature: 10–25 °C
As soon as the primer is dry to the touch, install the pipes in the pipe guiding grooves and connect them.
Make sure that the pipes snap home properly in to the pipe guiding grooves so that no pipe projects beyond the panel surface.
Prepare the casting compound as specified in the product information.
After primer application, wait for minimum 1 h and maximum 48 h before applying the casting compound.
Apply two coats of casting compound (total coat thickness at least 3 mm):
Required room temperature 10‑30 °C
Required panel temperature: 10–25 °C
Apply the first coat of casting compound. Using a rubber squeegee (model 1200.3) and applying light pressure, level the coat flush so that the primer is visible.
After approx. 2‑4 hours, apply the second layer and level by means of a height-adjustable spreading tool (model 1200.2) to 3 mm minimum.
If more than four hours have passed since the first layer has dried, apply another layer of primer.
Protect the casting compound from draughts and direct sunlight during curing.
By applying one layer of casting compound, the levelness tolerances according to the applicable directives are reached, see Regulations from section: Creating a pipe cover with casting compound .
Two-stage application of the casting compound provides for levelness tolerances in keeping with increased requirements.
In both cases, the floor layer may need re-working by the floor layer. Observe the manufacturers' product information and the applicable directives for flooring work, see Regulations from section: Creating a pipe cover with casting compound .
Flush all heating/cooling circuits individually and subsequently until the leaking water contains no more air.
Close the supply and return valves at the manifold.
Open the first supply valve or the first flow quantity gauge.
Via the boiler filling and draining tap (KFE tap) at the manifold, flush the circuit with filtered water until the leaking water contains no more air.
Close the valve again and repeat the process for all supply valves.
Open the supply and return valves at the manifold again and do a pressure test.
The leakage test of the heating circuits with water is carried out at a pressure of minimum 0.4 MPa (4 bar) and maximum 0.6 MPa (6 bar).
Retain the test pressure while applying the casting compound. Do not carry out the test at system units not designed for these pressure levels.
Keep the water temperature constant during the test.
Document the result of the pressure test in a log and enclose it with the total documentation.
Go to viega.de and the Fonterra product range to download a form on execution and documentation of the pressure test.
Functional heating is not required.
Separate the product and packaging materials (e. g. paper, metal, plastic or non-ferrous metals) and dispose of in accordance with valid national legal requirements.