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Australian Hydronic Supplies
10 Frankston Gardens Drive
Carrum Downs, Victoria,
Australia 3201
4.0 Planning - laying out the system
Fig
4
Every system has to be precisely planned to maximise the comfort and energy efficiency of the
system. The flexibility of the underfloor heating allows heating to be concentrated where needed most
and reduced where little or no heat is required. The closer the pipe spacing or deeper the pipe is
embedded in the screed the more uniform the heat distribution. Increasing the water temperature
increases the heat output of the heating system.
The diagrams below illustrate some of these possibilities:
4.1 Piping laying patterns
c)
System C
Combination system
This method allows greater heat to be applied to
the coldest area of the room, being the outside
walls often where there are large full-length
windows. Cold air cascading down these windows
is quickly heated by the concentrated heating on
the perimeter of the building to increase the
comfort of the room
FL
O
W
RETU RN
d
)
System D
Localising 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 practical system.
SYSTEM - D
C UPB O AR DS
a)
System A
Spiral Laying Pattern
This the most common method used as it gives a more
even heat distribution across the floor. Always lay the flow
pipe (hottest) nearest to the outside wall, with a distance of
150-200 mm from the inside of the finished wall. This
system has mainly 90
o
bends which are easier to lay than
180
o
bends
.
SYSTEM - A
R
E
TU
R
N
FL
O
W
b)
System B
Serpentine Laying Pattern
This method is useful when laying above the concrete where
battens are used under a floating wooden floor. It also allows
the warmest floor to be closest to the coldest wall. Always lay
the flow pipe (hottest) nearest to the outside wall with a
distance of 150-200 mm from the inside of the finished wall
.
SYSTEM - B
