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Australian Hydronic Supplies 

10 Frankston Gardens Drive 

Carrum Downs, Victoria,  

Australia  3201 

 

 

HYDRONIC RADIANT HEATING SYSTEM

 

 

Hydronic radiant heating & cooling systems can be installed in many ways to create a wonderfully 
warm room environment

 

These include: 

 

1.

 

Pipes embedded in the concrete floor. 

2.

 

Pipes in a floating floor system. 

3.

 

Pipes fixed to the underside of a wooden floor. 

4.

 

Pipes embedded in the walls of a room. 

5.

 

Pipes embedded in the ceiling of a room. 

6.

 

All these methods offer many practical benefits to suit the needs of all.  

7.

 

Hydronic radiant heating has been used for centuries. In the last few years, significant improvements in 
the technology together with the realisation of the benefits of this form of heating and cooling have created 
a rapid rise in installations. 

Tiemme

 has been one of the companies leading the way. 

 

Benefits

 - 

Tiemme 

radiant

 floor, wall or ceiling 

heating, provides energy saving with comfort, quiet 
and clean operation, with room versatility and choice 
of energy usage.  

Energy Saving

 -

 

Room temperatures can be set as 

much as 3 degrees lower and still maintain the 
required comfort level. In houses with high ceilings the 
savings can be significant. 

Ultimate Comfort 

-

 

Rooms can be heated to different 

temperatures according  to  their  usage.  Zones  can  be 
set  to  heat  rooms  at  different  times  to  eliminate  cold 
rooms  often  during  a  relative  short  period  of  usage. 
The  floors  are  always  comfortably  warm  no  matter 
what the floor coverings are. 

Quiet  Operation 

Tiemme 

radiant  floor  heating 

systems operate without noise and draughts. Air movement is kept to a minimum so dust and germs are not spread 
around the house. 

Choice  of  Surfaces 

-

 

Tiemme

  radiant  heating  systems  can  be  installed  in  a  concrete  floor  on  the  ground  or 

suspended below with wooden floors and even in the walls or ceiling. The choices are unlimited. 

Freedom  to  decorate 

-

 

As  the  heat  gently  radiates  from  the  whole  of  the  floor  there  are  no  obstructions  or 

limitations for the placement of furniture. 

Choice of energy 

 

Tiemme

 radiant systems can be powered by a gas-fired boiler, a combination of heat pump 

and  solar  collectors,  solid  fuel  boiler  or  any  new  energy  system  yet  to  be  discovered.  This  means  your  heating 
system is always ready for the future. 

Healthy Choice 

-

 Over the years people who have switched from forced air to floor radiant heating have greatly 

improved their allergy problems. This is attributed to less dust blowing around. 

Zero  maintenance 

-

 

Once  installed 

Tiemme

  radiant  floor  heating  does  not  require  routine  maintenance  or 

cleaning. 

 

Summary of Contents for TIEMME

Page 1: ... be significant Ultimate Comfort Rooms can be heated to different temperatures according to their usage Zones can be set to heat rooms at different times to eliminate cold rooms often during a relative short period of usage The floors are always comfortably warm no matter what the floor coverings are Quiet Operation Tiemme radiant floor heating systems operate without noise and draughts Air moveme...

Page 2: ...f u l l y 1 0 INTRODUCTION 3 2 0 RADIANT UNDER FLOOR HEATING 4 3 0 HEAT LOSS CALCULATIONS 6 4 0 PLANNING LAYING OUT THE SYSTEM 11 5 0 USEFUL INFORMATION 1 5 0 USEFUL INFORMATION 12 6 0 SELECTING A HEAT SOURCE 13 7 0 INFORMATION FOR THE BUILDER 15 8 0 HOW IT IS INSTALLED 16 9 0 MANIFOLD SYSTEM 20 10 0 EXPANSION VESSELS SIZING 24 11 0 FLOOR COVERINGS 25 12 0 HOW IS IT OPERATED 26 13 0 OTHER FORMS OF...

Page 3: ...m Coil length 120 300 600M Volume content l 100M Weight kg 100M Bending radius at 20oC 14 diameters Oxygen diffusion Barrier EVOH The COBRAPEX pipe with oxygen barrier EVOH is made of high density polyethylene chemically cross linked silani reticulation The COBRAPEX pipe reticulation is type b PE Xb this process modifies the chemical structure in order to Increase the maximum working temperature 9...

Page 4: ...a cooler surface Our human comfort relies just as much on radiant heat transfer as it does on air temperature yet the majority of heating and air conditioning professionals think only in terms of air temperature As a result Australians are missing the ultimate comfort available from radiant floor heating in their own homes or places of business By controlling both the air temperature and the radia...

Page 5: ...s such will be suitable for floor coil heating It is important that a uniform cover be maintained between the top of the pipe and slab surface to ensure even floor temperature Minimum cover 30mm Maximum cover 50mm Minimum slab thickness 100mm The following information is to be provided at selection stage 1 Tiemme Cobra Pex pipe specified 2 Pipe dimensions 16 dia x 2 0 wall 3 Pipe spacing 4 Require...

Page 6: ...ration has to be made for the floor coverings to be used The most efficient materials to use for floor coverings are those that have a high rate of conduction a low thermal resistance thus can conduct the heat from the floor and radiate its warmth to you As a rule a maximum R value of 0 15m2K W is best for the floor covering The following table illustrates more common floor covering materials Actu...

Page 7: ... Insulation Compacted Fill Consolidated Earth Tiemme pipe Heated Room 3 1 2 Slab construction Examples of slab constructions are detailed below Moisture Barrier Compacted Fill Consolidated Earth Distance from top of pipe to surface of concrete Maximum 65 mm Minimum 30 mm Pip FIG 1 General installation Heated Room Pip FIG 1 General installation Heated Room ...

Page 8: ...f each method of construction should be considered by the heating engineer and your builder before construction commences FIG 2 pipe in slab with insulation Consolidated earth Concrete slab Moisture Barrier Insulation Polyethylene membrane Mortar Bed Tiles Screed Tiemme pipe FIG 3 Pipe in Screed installation Heated Room ...

Page 9: ...4 50 21 6 41 22 9 33 24 4 24 25 7 200 56 19 0 46 21 3 37 22 6 30 24 1 22 25 6 250 51 18 6 41 20 9 34 22 4 27 23 9 20 25 4 300 45 18 2 37 20 6 30 22 1 24 23 7 18 25 2 Calculate the heat output at various room and water flow temperature of 35oC Floor covering Pipe spacing Room temp 15oC Room temp 18oC Room temp 20oC Room temp 22oC Room temp 24oC mm W M2 Floor oC W M2 Floor oC W M2 Floor oC W M2 Floo...

Page 10: ...0 28 7 250 85 21 0 75 23 3 68 24 8 61 26 3 60 27 8 300 75 20 3 66 22 7 60 24 3 54 25 8 48 27 4 Calculate the heat output at various room and water flow temperature of 45oC Floor covering Pipe spacing Room temp 15oC Room temp 18oC Room temp 20oC Room temp 22oC Room temp 24oC mm W M2 Floor oC W M2 Floor oC W M2 Floor oC W M2 Floor oC W M2 Floor oC Masonry tiles 50 215 30 4 194 31 8 180 33 7 165 33 7...

Page 11: ...ating on the perimeter of the building to increase the comfort of the room FLO W RETU RN d System DLocalising the heat distribution Whatever system A C is used where possible avoid placing piping under places such as kitchen cupboards refrigerators and also in the bathroom Heat can be concentrate for an airing cupboard or sitting area This all makes Tiemme underfloor heating system a most practica...

Page 12: ...ing 30kPa Velocities and pressures above this will cause noise erosion and circulation problems This will depend on the type of circulator used the project conditions and function 5 2 Heat load calculator The following formula can be used to calculate the heat load of the room Room Length x width x height x Factor 1000 Where factor for bedrooms 40 for living rooms 50 Using the same example room a ...

Page 13: ...se can be categorised as the following TYPE D Condensing boilers These boilers offer the highest efficiency and are ideal for the low water temperatures required by the Tiemme floor heating system This type of gas boiler is easy to plumb and control and is highly recommended TYPE B Cast iron boiler Long lasting simple control system easy to plumb and control TYPE A Storage boiler Usually with dome...

Page 14: ...y of the Tiemme floor heating system giving a far better heat distribution than a direct air heater of similar capacity Simple to install and control Type D plumbing 3 Electric heat pumps These water heaters provide the efficiency of the refrigeration multiplier to give excellent running costs where natural gas is not available Further efficiency can be gained by using ground or water sourced heat...

Page 15: ...heck who is responsible for the installation of the insulation if specified 3 Mains water must be available for the flushing and pressure testing of the system 4 Any structural requirements are to be adhered to 5 No go zones for the piping are to be marked out with YELLOW LINES on the prepared site 7 2 Shopping list parts required for the project Item Description Quantity required Make Model size ...

Page 16: ...o the laying Tiemme pipes 2 Fix the header firmly in at the selected position preferably in the centre of the system in a cupboard storage room laundry room linen room or utility room 3 Cover the manifold to ensure that it is not damaged by wet concrete during the pour 4 Mark the manifold with the name of each circuit i e lounge bedroom 2 3 etc 5 Lay out the polystyrene insulation over site 6 Clea...

Page 17: ...t of entry and exit from the slab 6 Start the circuit installation from the header out to the room entering and exiting the selected room through the doorways only 7 The length of all circuits should be approximately the same ideally each circuit should be the full length of the pipe coil 100 metre 8 3 Construction expansion joints Where expansion joints in the concrete are required as part of the...

Page 18: ...aneously close the flow valve of circuit No 1 and open the flow valve of circuit No 2 Then open the return valve of No 2 to repeat the purging of air in that circuit 9 Repeat steps 4 to 6 until all circuits have been purged of air At this point the whole system should be full of water and all the circuit valves closed 10 Check that the main flow and return pipes from the manifold to the boiler con...

Page 19: ...ete floor 12 To minimize the possibility of accidental puncturing of pipes during the construction of the building the pipes should be marked on the concrete in areas where this could happen 13 If it is not possible to keep the system under pressure during the concrete pour then the system should be pressure tested again immediately after the pour has been completed 8 7 Commissioning of the system...

Page 20: ...n module valve Module system allows up to 15 circuits per manifold Valves built in to the manifold saving installation time Easy to extend later System can be installed left or right hand Easy connection to Multitherm pipe Custom made wall brackets Each module is manufactured from high temperature resistant fibreglass reinforced polyamide Temperature resistant from 20oC to 200oC Maximum operating ...

Page 21: ...e instructions carefully before commencing the assembly of the manifold Items required Item No Circuits 3 4 5 6 7 8 9 10 11 12 13 14 Part No No of Items required Starting Kit 6040 1 1 1 1 1 1 1 1 1 1 1 1 Flow Module 6042 3 4 5 6 7 8 9 10 11 12 13 14 Return Module 6045 3 4 5 6 7 8 9 10 11 12 13 14 Compression Fitting 6022 6 8 10 12 14 16 18 20 22 24 26 28 Isolation Valve 2 2 2 2 2 2 2 2 2 2 2 2 Cab...

Page 22: ...RESSURE LOSS Flow 1 2 3 4 5 T o t a l M a n i f o l d F l o w L H 30 66 108 150 180 300 400 500 600 700 800 900 L M 0 5 1 1 1 8 2 5 3 0 5 0 6 7 8 3 1 0 0 1 1 6 1 3 3 1 5 L S 0 008 0 018 0 030 0 417 0 5 0 0 8 0 1 1 0 1 3 0 1 7 0 1 9 0 2 2 0 2 5 Refer to Chart above for flows and pressure loss Pressure M Bar 20 40 60 80 1 0 0 1 2 0 1 4 0 Pressure kPa 2 4 6 8 1 0 1 2 1 4 ...

Page 23: ... e e l c a b i n e t w i t h d o o r S i z e s V K 6 5 0 0 5 0 0 w i d e 5 c i r c u i t s V K 6 7 0 0 7 3 0 w i d e 9 c i r c u i t s V K 6 7 0 0 9 7 0 w i d e 1 4 c i r c u i t s Reduce number of manifold circuits by two circuits if ball valves are used inside the cabinet All pipes should enter from the base and should not touch the sides of the cabinet as this may lead to noise during heating a...

Page 24: ...llowance between 5 and 10 of this value 5 Modern boilers usually have a build in expansion vessel of 7 10L capacity 6 Add an additional expansion to the return leg of the pipe work if the boiler expansion vessel is inadequate In operation this usually shows with boiler pressure of 3 Bar and water flowing through the pressure relief valve Australian Hydronic Supplies Pty Ltd is able to provide supp...

Page 25: ... for a minimum of 30 days 6 To ensure that all parquetry floors or other timber floor coverings are thoroughly kiln dried to eliminate shrinkage It is recommended that timber floor surfaces be laid whilst the heating system is operating 7 When laying timber flooring store the material in the room with the heating turned on To reduce the effects of shrinkage the moisture content of the wood must no...

Page 26: ...en the central room thermostat senses changes in room temperature from the set points 12 3 Multi zone control By placing an additional room clock thermostat in each of a number of zones electric valves fitted to the Multitherm manifolds for selected room circuits can be turned to low off or normal at pre determined times and temperatures 12 4 Climate controlled Using a modern Condensing Boiler and...

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