REHAU catalog

Technical specification Peroxide-Crosslinked Polyethylene for Hot and Cold Water System

REHAU Specification Texts

RAUTITAN pink Under Floor Heating SystemSystemPage

RAUTITAN pink In-slab system2RAUTITAN pink Tacker system7RAUTITAN pink RAUFIX system13RAUTITAN pink Concrete Core Tempering system19RAUTITAN pink Floating floor system24RAUTITAN pink Diffusion plate system25Technical specification REHAU Under Floor Heating/Cooling System

REHAU Under Floor Heating / Cooling RAUTITAN pink In-slab system

1 GENERAL

This section relates to REHAU Under Floor Heating / Cooling (UFH/C) system.

2 SYSTEM DESCRIPTION

The REHAU RAUTITAN system for under floor heating and cooling applications consists of:

RAUTITAN pink pipe, fittings and accessories

REHAU manifolds

REHAU flow temperature control REHAU zone controlMain supply and return pipes including valves and fittings, main circulation pump, heat source and all other components required to render the system fully operational are not included in this section.

3 REFERENCE DOCUMENTATION

The documents referred to in this section are:

NCC / BCABuilding Code of Australia

BS EN 1264 Floor heating - Systems and components

BS 7291 Thermoplastic pipes and associated fittings for hot and cold water for domestic purposes and heating installations in buildings

3.1 Manufacturers documentation

Manufacturers and suppliers documents relating to work in this section are:

REHAU Piping, Connection and System Guidelines Technical information

REHAU Under Floor Heating/Cooling Technical Information

The above information is available from REHAU:

Web:www.rehau.com.auPhone: 1300 768 033 (Australia only) or +61 2 8741 4500

4 General system design, installation and commissioning

Planning, installation and commissioning must comply with the following documents:




Installers to be a member of the REHAU Authorised Installer Network RAIN, familiar with the materials and the techniques specified. The installer is responsible to ensure any equipment connected to the REHAU controls and supplied by others is suitable for the purpose and installed to manufacturer's requirements.

5 PROJECT SPECIFIC DESIGN PARAMETERS

PipeREHAU RAUTITAN pink

Pipe dimensions16 x 2.2mm or 20 x 2.8mm

SystemIn-Slab

Covered floor area. m2 with a total output of W

Pipe laying patternReverse Spiral

Double Meander

Single Meander

Pipe spacing100mm, 150mm, 200mm, 300mm

Number of zones

Number of manifolds

Number of circuits

Max. length per circuit100m (16 x 2.2mm)

150m (20 x 2.8mm)

Max. floor temperature29 C

Total flow rate m3/h

Flow control type3-Way mixing valve

Compact Mixer Unit with circulating pump

Universal Flow Control with circulating pump

Zone controlRAUMATIC M

Room thermostat typeStandard

Control

Comfort (optional with floor sensor)

Material selection as described in section MATERIALS,

Installation as described in section INSTALLATION AND COMMISSIONING,

Documentation as described in section DOCUMENTATION.

6 MATERIALS

6.1 PE-Xa cross-linked polyethylene pipe

Pipe materials shall be a PE-Xa inner layer and an outer EVOH oxygen barrier with pink adhesive for clear distinction as radiant heating/cooling pipe. Oxygen-tight according to DIN 4726.

Suitable for use in heating and cooling applications in residential and commercial applications in accordance with BS EN 1264 and BS 7291.

6.2 Pipe performance specification

ProductRAUTITAN pink

ColourPink

MaterialFlexible, high-pressure cross-linked polyethylene pipe PE-Xa (in accordance with DIN 16892/16893)

Pressure ratingPN20 (in accordance with AS/NZS 2492)

Design pressureA Class.1-5/10bar (in accordance with ISO 15875)

Continuous operation70 C at 1,000 kPa

Maximum operating temperature90 C

short-term maximum temperature100 C

Operational life time (at 70C / 1,000 kPa)50 years

Available sizes in mm16 x 2.2mm32 x 4.4mm 50 x 6.9 mm*

20 x 2.8mm40 x 5.5mm63 x 8.6 mm*25 x 3.5mm

* Non-standard item in Australia. Check for availability.

Australia and New Zealand approvals and certificationsAS/NZS 2492:2007BRANZ appraisal no. 434

6.3 Fittings and sleeves

Connections shall be axial compression sleeve mechanism, featuring the following benefits:

Permanently sealing compression sleeve jointing technique

Self-sealing pipe material connection without the use of an O-ring

Increased hydraulic properties based on expansion technology

Approved for flush-mounted installation

Robust jointing technique highly suitable for construction sites Simple visual inspection

Joint can be pressurised immediately after installation

Requires no calibration or deburring

Same jointing technique and tools for water services, gas and heating installation

Fittings and sleeves shall be REHAU RAUTITAN PX or MX.

RAUTITAN PX polymer fittings made of PPSU (colour: black) with tool tabs for precise attachment of the assembly tool RAUTOOL shall be used for threadless connections from 16 to 40mm.

RAUTITAN PX multi directional polymer sleeves made of PVDF (colour: black) with laser engraved production date shall be used for all connections from 16 to 40mm.

RAUTITAN MX DZR Brass fitting made of special dezincification-resistant brass, manufactured in accordance with AS 2345, DIN EN 12164, DIN EN 12165 and DIN EN 12168 grade A (equivalent to highest requirement category) shall be used for all threaded connections from 16 to 40mm.

6.4 REHAU manifold

Manifolds shall be installed at a location approved by the Architect. The number of manifold outlets shall correspond to the number of circuits served by that manifold.

Option 1: BrassREHAU manifold manufactured from standard (CW508L) brass as a distributor and collector for the individual heating and cooling circuits. Pre-assembled and mounted on sound-insulated galvanised steel brackets. Combined flow meter 0-4 l / min and quick stop in the supply header, thermostat insert with flow rate control in return header. 2 to 12 outlets male thread euro-cone. Maximum operational pressure 600kPa (6 bar) at 80C. N.B. 7-port, 9-port and 11-port manifolds are non-standard items in Australia and New Zealand, please check with your local REHAU Sales Office for availability.Option 2: PolymerModular REHAU manifold manufactured from corrosion resistant and thermal resistant reinforced fibreglass as a distributor and collector for the individual heating and cooling circuits. Supply modules in red colour with integrated shut-off valve, attachment of actuator possible. Return modules in blue colour with integrated, adjustable flow meter, lead-sealable cap. 2 to 17 outlets male thread euro-cone. Operating temperatures from -20 to +90C. Maximum test pressure 1,000kPa (10 bar), maximum operational pressure 600kPa (6 bar). 6.5 REHAU Flow temperature controlProvide flow temperature control for every manifold to maintain the supply temperature delivered to the underfloor heating circuits to the designed level. Use the following components:Option 1: For brass manifolds

Compact mixer unit, pre-assembled pump module fitted with circulating pump, integral thermostat limit and mixing valve to control supply temperature, pump and flow temperature exceeding safety limits. Ready to fit to left or right side of REHAU brass manifolds.Option 2: For polymer manifolds

Universal flow temperature controller with pump, control valve, throttle valve, actuator, bypass, sensor and temperature limiter. This digital electronic type can work in 3 different modes: 1. Outside Temperature controlled flow temperature, 2. Constant flow temperature, 3. Boiler controlled flow temperature. Connection to the left or right side of the REHAU polymer manifold.

6.6 REHAU Zone controlProvide control zones with 2-channel timer function with night set-back mode as per the drawings based on the following components:

REHAU Room thermostats:Room Thermostats Standard, Comfort or Control complete with setback temperature reduction mode, including programmable models and models with floor sensor. Operating voltage 24 VAC

RAUMATIC M Distribution controller:

The REHAU distribution controller, fixed above the manifold, connects wiring from up to 6 REHAU room thermostats, up to 14 thermal actuators and optional boiler and pump, and manages the control of the UFH system. Extendable with attachable RAUMATIC modules for timer function and further functionality. Colour housing: silver-gray (RAL 7001), colour cover: transparentInput voltage 230 VACOperating voltage 24 VACPower transformer 50 VAWidth 305 mmHeight 75 mmDepth 70 mm

REHAU Thermal actuators:

Thermal actuators to allow the individual control of circuits by opening and closing the corresponding isolating valve on the manifold. The RAUMATIC actuator is controlled by room thermostat Standard, Comfort or Control. Operating voltage 24 VAC7 INSTALLATION AND COMMISSIONING

7.1 Installation

Make sure installation area is fully cleared, flat even floor and surface free of irregularities. Co-ordinate with builder at shop drawing stage to identify all construction joints and saw cuts with concrete floors. Mark all heated and non-heated areas and floor joints on the floor area. Install the manifold straight at the designated position by firmly attaching it to the ground. Underslab insulation, damp proof membrane, chairs and reinforcing mesh to be provided and installed by main contractor.Pipework Layout

Pipework to be cable tied to the concrete mesh. Lay pipes in a continuous length from the manifold in the pre-designed configuration. REHAU fittings can be embedded into concrete if agreed with designer. Fittings to be wrapped with PVC tape. Pipes start and finish at the manifold position. Pipes must run to the corresponding port on the manifold. Do not cross pipes over in the floor. Pipe depth in concrete should provide a minimum thickness of 45mm above the crown of the pipework. Note the real pipe length of each circuit to adjust the hydraulic balancing of the manifold. Mark the name of each circuit on the corresponding manifold outlet. All coils in floors shall be installed strictly in compliance with the requirements of the structural engineer and in accordance with the recommendations of REHAU for concrete floor heating applications. Piping shall be installed completely free of twists, warps or buckles.

Conduit Sleeving

Sleeve all flow pipes with REHAU conduit sleeving where the pipe enters and returns from concrete for the first metre to REHAU requirements. Sleeve across construction joints in floor. When installing pipe in door frames or through walls install a section of corrugated sleeving in this area to allow free movement of the pipe.

Connection to main supply and return lines

Provide total flow rates and head losses for each manifold to the contractor of the main supply and return lines to enable them to design pump sizes, pipe dimensions and all other components required to render the system fully operational. The connection of the UFH/C system to the main supply and return pipes is the duty of the mechanical contractor. 7.2 Filling and Pressure Testing

Pressure test the system with water before the slab is laid to ensure all joints are watertight and no damage has occurred to the pipe during installation. In case of freezing conditions, add antifreeze to avoid freezing of the water in the pipes. Make sure antifreeze is suitable for PEX and brass materials. Allow for pressure testing of the underfloor heating pipe circuits to 600kPa. Lay the slab as soon as possible, in good contact to the pipes, without any airpockets, after laying the pipe circuits and completion of a pressure test. Leave pipe circuits under pressure until concrete is cured. Provide signed and witnessed pressure testing protocol.7.3 Initial Warm-Up

Allow the concrete to dry for 3 weeks. Balance the system via the valves on the manifold to achieve an even flow and heat up. Start the warm-up procedure according with BS EN 1264 and REHAU requirements. Provide signed and witnessed warm-up protocol.7.4 Commissioning

Ensure the complete central heating system, including main supply circulation pump and radiators if present, is working. Based on the real pipe length noted during laying of the pipework, adjust each circuit slowly via the valves on the manifold to ensure an even flow and heat up is achieved (hydraulic balancing). Provide commissioning certificate.Run the system for at least two weeks before the floor covering is finally laid. For floor coverings use adhesive suitable for temperatures up to 40C.

8 DOCUMENTATION

8.1 Design Data

Installer to provide pipe layout drawing to main contractor prior to installation.

8.2 As-Built documents to main contractor

Installer to provide as-built information to the main contractor on completion of the UFH/C installation, including:

a) Photographs recording actual layoutb) Drawings showing the as built layoutc) Protocols for Pressure Testing, Warm-up and Commissioning

8.3 As-Built documents to owner

Installer to provide as-built information to the owner within 10 working days of practical

completion, including:

a) Photographs recording actual layoutb) Drawings showing the as built layoutc) Protocols for Pressure Testing, Warm-up and Commissioning9 MANUFACTURER WARRANTY

25 years Pipe warranty period from date of completion of system test, based on the Terms and Conditions of the REHAU RAUTITAN Warranty Certificate in the manufacturers standard form.

Technical specification REHAU Under Floor Heating/Cooling System

REHAU Under Floor Heating / Cooling

RAUTITAN pink - Tacker system

10 GENERAL



The REHAU tacker system for under floor heating and cooling applications consists of:

RAUTITAN pink pipe, fittings and accessories REHAU tacker sheet

REHAU tacker staples REHAU edge insulation strip

REHAU expansion joints REHAU manifolds

REHAU flow temperature control

REHAU zone control

Main supply and return pipes including valves and fittings, main circulation pump, heat source and all other components required to render the system fully operational are not included in this section.





BS EN 13163 Thermal insulation products for buildings. Factory made products of expanded polystyrene. Specification

















SystemTacker



Double Meander

Single Meander


Number of zones

Number of manifolds

Number of circuits


150m (20 x 2.8mm)








Control





15 MATERIALS






ColourPink









20 x 2.8mm40 x 5.5mm63 x 8.6 mm*25 x 3.5mm










Joint can be pressurised immediately after installation Requires no calibration or deburring






15.4 REHAU tacker system

Tacker sheet:

Expanded polystyrene EPS insulation sheet laminated with a fabric reinforced foil made from polyethylene to REHAU requirements. The water resistant foil prevents moisture and water from the screed reaching the EPS floor insulation. One side foil overlap. A grid system is printed onto the clear foil to aid correct pipe spacing at laying intervals of 50mm and multiples thereof.

Thickness 25mm, grade SL (compressive strength 70 kPa acc AS 1366), R-value 0.6

For other Tacker sheet options check with REHAU for availability.

Pipe fixing staples:

Pipe fixing staples to fasten the pipe firmly to the Tacker sheet and to prevent the pipe from floating. For pipe dimensions 16mm or 20mm.

REHAU Edge insulation strips:

To prevent sound and heat bridges. Made of closed cell polyethylene foam, with profiled wall, a self-adhesive strip on back and foil flaps. The tear-proof foil flaps with self-adhesive film base prevents moisture and water from the screed reaching the EPS floor insulation. Height 180mm, thickness 10mm, length 25m supplied in rolls.

REHAU Expansion joint profile:

To provide a thermal break between adjoining heated screeds and/or controlled zones and to form permanently elastic joints between screed fields. Self-adhesive base to ensure secure retention on the REHAU insulation layer. Height 100mm, thickness 10mm, length 1200mm.

15.5 REHAU manifold


Option 1: Brass

REHAU manifold manufactured from standard (CW508L) brass as a distributor and collector for the individual heating and cooling circuits. Pre-assembled and mounted on sound-insulated galvanised steel brackets. Combined flow meter 0-4 l / min and quick stop in the supply header, thermostat insert with flow rate control in return header. 2 to 12 outlets male thread euro-cone. Maximum operational pressure 600kPa (6 bar) at 80C. N.B. 7-port, 9-port and 11-port manifolds are non-standard items in Australia and New Zealand, please check with your local REHAU Sales Office for availability.

Option 2: Polymer

Modular REHAU manifold manufactured from corrosion resistant and thermal resistant reinforced fibreglass as a distributor and collector for the individual heating and cooling circuits. Supply modules in red colour with integrated shut-off valve, attachment of actuator possible. Return modules in blue colour with integrated, adjustable flow meter, lead-sealable cap. 2 to 17 outlets male thread euro-cone. Operating temperatures from -20 to +90C. Maximum test pressure 1,000kPa (10 bar), maximum operational pressure 600kPa (6 bar).15.6 REHAU Flow temperature control

Provide flow temperature control for every manifold to maintain the supply temperature delivered to the underfloor heating circuits to the designed level. Use the following components:Option 1: For brass manifolds

Compact mixer unit, pre-assembled pump module fitted with circulating pump, integral thermostat limit and mixing valve to control supply temperature, pump and flow temperature exceeding safety limits. Ready to fit to left or right side of REHAU brass manifolds.

Option 2: For polymer manifolds


15.7 REHAU Zone control

Provide control zones with 2-channel timer function with night set-back mode as per the drawings based on the following components:

REHAU Room thermostats:Room Thermostats Standard, Comfort or Control complete with setback temperature reduction mode, including programmable models and models with floor sensor. Operating voltage 24 VAC

RAUMATIC M Distribution controller:



Thermal actuators to allow the individual control of circuits by opening and closing the corresponding isolating valve on the manifold. The RAUMATIC actuator is controlled by room thermostat Standard, Comfort or Control. Operating voltage 24 VAC

16 INSTALLATION AND COMMISSIONING

16.1 Installation

Make sure installation area is fully cleared, flat even floor and surface free of irregularities. Co-ordinate with builder at shop drawing stage to identify all construction joints and saw cuts with concrete floors. Install the manifold straight at the designated position.

Ensure the area for installation remains dry and weathertight by incorporating a dampproof membrane in the floor slab. Lay insulation to the total area of the installation, with edge insulation on all internal and external wall lines. If the floor construction is a two part slab with the walls already in place, edge insulation is required around the walls to prevent heat loss up the walls and to allow the screed for expansion.

Confirm suitable insulation material and thickness with REHAU before installation of UFH/C. Lay Tacker sheets tightly butted up to each other over substrate with foil overlapping adjacent sheet. Ensure printed foil faces upwards and the grid lines up across the joints. Stagger the joints as in a brick laying pattern. Tape down foil overlaps so no water will penetrate through the insulation. Fix down pipes to the Tacker sheet with specially designed Tacker staples fixed with a REHAU Tacker staple gun to ensure a secure fixing on the Tacker sheet. Staples are specific to the pipe size (grey staples for 16mm pipe and black staples for 20mm pipe). When fixing the pipe, staples should be positioned at a maximum of 400mm centres along the pipe. Mark all heated and non-heated areas and floor joints on the floor area. Assemble the REHAU expansion joint profile. Pipework Layout

Pipework fixed onto the insulation board to REHAU's recommendations. Lay pipes in a continuous length from the manifold in the pre-designed configuration. REHAU fittings can be embedded into concrete if agreed with designer. Fittings to be wrapped with PVC tape. Pipes start and finish at the manifold position. Pipes must run to the corresponding port on the manifold. Do not cross pipes over in the floor. Note the real pipe length of each circuit to adjust the hydraulic balancing of the manifold. Mark the name of each circuit on the corresponding manifold outlet.

All coils in floors shall be installed strictly in compliance with the requirements of the structural engineer and in accordance with the recommendations of REHAU for concrete floor heating applications. Piping shall be installed completely free of twists, warps or buckles. Screed height should provide a minimum thickness of 45mm above the crown of the pipework. Depending on structural loads the screed thickness must eventually be increased.

Conduit Sleeving

Sleeve all flow pipes with REHAU conduit sleeving where the pipe enters and returns from screed/ concrete for the first metre to REHAU requirements. Sleeve across construction joints in floor. When installing pipe in door frames or through walls install a section of corrugated sleeving in this area to allow free movement of the pipe.


Provide total flow rates and head losses for each manifold to the contractor of the main supply and return lines to enable them to design pump sizes, pipe dimensions and all other components required to render the system fully operational. The connection of the UFH/C system to the main supply and return pipes is the duty of the mechanical contractor.

16.2 Filling and Pressure Testing

Pressure test the system with water before the slab is laid to ensure all joints are watertight and no damage has occurred to the pipe during installation. In case of freezing conditions, add antifreeze to avoid freezing of the water in the pipes. Make sure antifreeze is suitable for PEX and brass materials. Allow for pressure testing of the underfloor heating pipe circuits to 600kPa. Lay the slab as soon as possible, in good contact to the pipes, without any airpockets, after laying the pipe circuits and completion of a pressure test. Leave pipe circuits under pressure until concrete is cured. Provide signed and witnessed pressure testing protocol.

16.3 Initial Warm-Up

Allow the concrete to dry for 3 weeks. Balance the system via the valves on the manifold to achieve an even flow and heat up. Start the warm-up procedure according with BS EN 1264 and REHAU requirements. Provide signed and witnessed warm-up protocol.

16.4 Commissioning

Ensure the complete central heating system, including main supply circulation pump and radiators if present, is working. Based on the real pipe length noted during laying of the pipework, adjust each circuit slowly via the valves on the manifold to ensure an even flow and heat up is achieved (hydraulic balancing). Provide commissioning certificate.

Run the system for at least two weeks before the floor covering is finally laid. For floor coverings use adhesive suitable for temperatures up to 40C.

17 DOCUMENTATION

17.1 Design Data









18 MANUFACTURER WARRANTY




RAUTITAN pink RAUFIX system

19 GENERAL



The REHAU RAUFIX system for under floor heating and cooling applications consists of:

RAUTITAN pink pipe, fittings and accessories REHAU RAUFIX rails REHAU RAUFIX retaining pins REHAU manifolds

REHAU flow temperature control

REHAU zone control






















SystemRAUFIX


Pipe laying patternDouble Meander

Single Meander


Number of zones

Number of manifolds

Number of circuits


150m (20 x 2.8mm)








Control





24 MATERIALS






ColourPink









20 x 2.8mm40 x 5.5mm63 x 8.6 mm*25 x 3.5mm
















24.4 REHAU RAUFIX system

RAUFIX rails:

Rails made of impact-resistant and highly stable polypropylene, CFC, HFC and PVC free. With barbs and pins, or alternatively flat bars with molded connectors, to securely hold the pipe and to prevent the pipe from floating. Rails can be connected and provide a pipe spacing of 50mm and multiples thereof. Suitable for REHAU pipes 16 to 20mm.Rail length 1000mm, width 50mm, height 27mm, pipe lift 5mm.

RAUFIX retaining pins:

Fixing pins made of polypropylene to fasten the RAUFIX rails to the insulation sheet. Length 50mm, tip distance 20mm.REHAU Edge insulation strips:

To prevent sound and heat bridges. Made of closed cell polyethylene foam, with profiled wall, a self-adhesive strip on back and foil flaps. The tear-proof foil flaps with self-adhesive film base prevents moisture and water from the screed reaching the EPS floor insulation. Height 180mm, thickness 10mm, length 25m supplied in rolls.

REHAU Expansion joint profile:

To provide a thermal break between adjoining heated screeds and/or controlled zones and to form permanently elastic joints between screed fields. Self-adhesive base to ensure secure retention on the REHAU insulation layer. Height 100mm, thickness 10mm, length 1200mm.

24.5 REHAU manifold


Option 1: Brass

REHAU manifold manufactured from standard (CW508L) brass as a distributor and collector for the individual heating and cooling circuits. Pre-assembled and mounted on sound-insulated galvanised steel brackets. Combined flow meter 0-4 l / min and quick stop in the supply header, thermostat insert with flow rate control in return header. 2 to 12 outlets male thread euro-cone. Maximum operational pressure 600kPa (6 bar) at 80C. N.B. 7-port, 9-port and 11-port manifolds are non-standard items in Australia and New Zealand, please check with your local REHAU Sales Office for availability.

Option 2: Polymer

Modular REHAU manifold manufactured from corrosion resistant and thermal resistant reinforced fibreglass as a distributor and collector for the individual heating and cooling circuits. Supply modules in red colour with integrated shut-off valve, attachment of actuator possible. Return modules in blue colour with integrated, adjustable flow meter, lead-sealable cap. 2 to 17 outlets male thread euro-cone. Operating temperatures from -20 to +90C. Maximum test pressure 1,000kPa (10 bar), maximum operational pressure 600kPa (6 bar).24.6 REHAU Flow temperature control

Provide flow temperature control for every manifold to maintain the supply temperature delivered to the underfloor heating circuits to the designed level. Use the following components:

Option 1: For brass manifolds

Compact mixer unit, pre-assembled pump module fitted with circulating pump, integral thermostat limit and mixing valve to control supply temperature, pump and flow temperature exceeding safety limits. Ready to fit to left or right side of REHAU brass manifolds.

Option 2: For polymer manifolds


24.7 REHAU Zone control

Provide control zones with 2-channel timer function with night set-back mode as per the drawings based on the following components:

REHAU Room thermostats:Room Thermostats Standard, Comfort or Control complete with setback temperature reduction mode, including programmable models and models with floor sensor. Operating voltage 24 VAC.RAUMATIC M Distribution controller:



Thermal actuators to allow the individual control of circuits by opening and closing the corresponding isolating valve on the manifold. The RAUMATIC actuator is controlled by room thermostat Standard, Comfort or Control. Operating voltage 24 VAC.25 INSTALLATION AND COMMISSIONING

25.1 Installation

Make sure installation area is fully cleared, flat even floor and surface free of irregularities.

Co-ordinate with builder at shop drawing stage to identify all construction joints and saw cuts with concrete floors. Install the manifold straight at the designated position.Ensure the area for installation remains dry and weathertight by incorporating a dampproof membrane in the floor slab. Lay insulation to the total area of the installation, with edge insulation on all internal and external wall lines. If the floor construction is a two part slab with the walls already in place, edge insulation is required around the walls to prevent heat loss up the walls and to allow the screed for expansion.

Screed insulation and damp proof membrane not part of REHAU product range and to be chosen according to separate specification.

Connect RAUFIX rails to form the desired length and lay parallel on the floor with a spacing of 1m. Secure RAUFIX rails with RAUFIX retaining pins with a spacing of 400mm. Connect one end of the pipe to the manifold and clip the pipe into the moulded connectors of the RAUFIX rail. Secure the pipe in areas of direction change with additional REHAU Tacker staples or RAUFIX retaining pins. Mark all heated and non-heated areas and floor joints on the floor area. Assemble the REHAU expansion joint profile. Pipework Layout

Pipework fixed onto the insulation board to REHAU's recommendations. Lay pipes in a continuous length from the manifold in the pre-designed configuration. REHAU fittings can be embedded into concrete if agreed with designer. Fittings to be wrapped with PVC tape. Pipes start and finish at the manifold position. Pipes must run to the corresponding port on the manifold. Do not cross pipes over in the floor. Note the real pipe length of each circuit to adjust the hydraulic balancing of the manifold. Mark the name of each circuit on the corresponding manifold outlet.

All coils in floors shall be installed strictly in compliance with the requirements of the structural engineer and in accordance with the recommendations of REHAU for concrete floor heating applications. Piping shall be installed completely free of twists, warps or buckles. Screed height should provide a minimum thickness of 45mm above the crown of the pipework. Depending on structural loads the screed thickness must eventually be increased.

Conduit Sleeving

Sleeve all flow pipes with REHAU conduit sleeving where the pipe enters and returns from screed/ concrete for the first metre to REHAU requirements. Sleeve across construction joints in floor. When installing pipe in door frames or through walls install a section of corrugated sleeving in this area to allow free movement of the pipe.


Provide total flow rates and head losses for each manifold to the contractor of the main supply and return lines to enable them to design pump sizes, pipe dimensions and all other components required to render the system fully operational. The connection of the UFH/C system to the main supply and return pipes is the duty of the mechanical contractor.


Pressure test the system with water before the slab is laid to ensure all joints are watertight and no damage has occurred to the pipe during installation. In case of freezing conditions, add antifreeze to avoid freezing of the water in the pipes. Make sure antifreeze is suitable for PEX and brass materials. Allow for pressure testing of the underfloor heating pipe circuits to 600kPa. Lay the slab as soon as possible, in good contact to the pipes, without any airpockets, after laying the pipe circuits and completion of a pressure test. Leave pipe circuits under pressure until concrete is cured. Provide signed and witnessed pressure testing protocol.



25.4 Commissioning



26 DOCUMENTATION

26.1 Design Data








a) Photographs recording actual layoutb) Drawings showing the as built layout

c) Protocols for Pressure Testing, Warm-up and Commissioning




REHAU Under Floor Heating / Cooling RAUTITAN pink Concrete Core Tempering28 GENERAL

This section relates to REHAU Concrete Core Tempering (CCT) system.

29 SYSTEM DESCRIPTION The REHAU RAUTITAN system for Concrete Core Tempering consists of:

RAUTITAN pink pipe, fittings and accessories

REHAU manifolds






















SystemConcrete Core Tempering



Double Meander

Single Meander


Number of zones

Number of manifolds

Number of circuits


150m (20 x 2.8mm)



Flow control type

Zone control

Room thermostat type




33 MATERIALS






ColourPink









20 x 2.8mm40 x 5.5mm63 x 8.6 mm*25 x 3.5mm
















33.4 REHAU manifold


Option 1: Brass

REHAU manifold manufactured from standard (CW508L) brass as a distributor and collector for the individual heating and cooling circuits. Pre-assembled and mounted on sound-insulated galvanised steel brackets. Combined flow meter 0-4 l / min and quick stop in the supply header, thermostat insert with flow rate control in return header. 2 to 12 outlets male thread euro-cone. Maximum operational pressure 600kPa (6 bar) at 80C. N.B. 7-port, 9-port and 11-port manifolds are non-standard items in Australia and New Zealand, please check with your local REHAU Sales Office for availability.Option 2: Polymer

Modular REHAU manifold manufactured from corrosion resistant and thermal resistant reinforced fibreglass as a distributor and collector for the individual heating and cooling circuits. Supply modules in red colour with integrated shut-off valve, attachment of actuator possible. Return modules in blue colour with integrated, adjustable flow meter, lead-sealable cap. 2 to 17 outlets male thread euro-cone. Operating temperatures from -20 to +90C. Maximum test pressure 1,000kPa (10 bar), maximum operational pressure 600kPa (6 bar).

34 INSTALLATION AND COMMISSIONING

34.1 Installation

Make sure installation area is fully cleared, surface flat and even and free of irregularities. Co-ordinate with builder at shop drawing stage to identify all construction joints and saw cuts with concrete floors. Mark all heated and non-heated areas and floor joints on the floor area. Install the manifold straight at the designated position by firmly attaching it to the ground.

Any insulation layer, damp proof membrane, chairs and reinforcing mesh to be provided and installed by main contractor.

Pipework Layout

Pipework to be cable tied to the concrete mesh. Lay pipes in a continuous length from the manifold in the pre-designed configuration. REHAU fittings can be embedded into concrete if agreed with designer. Fittings to be wrapped with PVC tape. Pipes start and finish at the manifold position. Pipes must run to the corresponding port on the manifold. Do not cross pipes over in the floor. Pipe depth in concrete should provide a minimum thickness of 45mm above the crown of the pipework. Note the real pipe length of each circuit to adjust the hydraulic balancing of the manifold. Mark the name of each circuit on the corresponding manifold outlet.

All coils in floors shall be installed strictly in compliance with the requirements of the structural engineer and in accordance with the recommendations of REHAU for concrete floor heating applications. Piping shall be installed completely free of twists, warps or buckles.

Conduit Sleeving

Sleeve all flow pipes with REHAU conduit sleeving where the pipe enters and returns from concrete for the first metre to REHAU requirements. Sleeve across construction joints in floor. When installing pipe in door frames or through walls install a section of corrugated sleeving in this area to allow free movement of the pipe.


Provide total flow rates and head losses for each manifold to the contractor of the main supply and return lines to enable them to design pump sizes, pipe dimensions and all other components required to render the system fully operational. The connection of the CCT system to the main supply and return pipes is the duty of the mechanical contractor.


Pressure test the system with water before the concrete is poured to ensure all joints are watertight and no damage has occurred to the pipe during installation. In case of freezing conditions, add antifreeze to avoid freezing of the water in the pipes. Make sure antifreeze is suitable for PEX and brass materials. Allow for pressure testing of the underfloor heating pipe circuits to 600kPa. Concrete shall be poured as soon as possible, in good contact to the pipes, without any airpockets, after laying the pipe circuits and completion of a pressure test. Leave pipe circuits under pressure until concrete is cured. Provide signed and witnessed pressure testing protocol.



34.4 Commissioning



35 DOCUMENTATION

35.1 Design Data



Installer to provide as-built information to the main contractor on completion of the CCT installation, including:










RAUTITAN pink Floating floor system

37 GENERAL

Please ask your local REHAU sales office for specification texts for this system or callPhone: 1300 768 033 (Australia only) or +61 2 8741 4500



RAUTITAN pink Diffusion plate system

38 GENERAL

Please ask your local REHAU sales office for specification texts for this system or call

Phone: 1300 768 033 (Australia only) or +61 2 8741 4500Version: Mar-2012

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REHAU catalog

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Transcript of REHAU catalog