Danfoss Basic Heating Systems Compendium

MAKING MODERN LIVING POSSIBLE

Basic™ Heating Systems

Danfoss Heating Solutions

Handbook

Handbook	Basic™ Heating Systems

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Handbook	Basic™ Heating Systems
Index		Page
	Underfloor heating with heated screed as liquid or cement screed	4
	Basic heating systems	4
	Advantages	4
	Relevant standards for underfloor heating	5
	Minimum thermal resistance of insulation
	under floor heating systems from EN 1264, Part 4	5
	BasicRail	5
	BasicClip	5
	BasicGrip	5
	Basic insulation overlap panels	6
	Floor constructions	6
	Thermal resistance	7
	Basic perimeter insulation	8
	Tanking for liquid screed	8
	BasicRail - types of installation	8
	Application sheet - BasicRail, Room with floor meeting window	9
	BasicClip and BasicGrip - types of installation	9
	Application sheet - BasicClip, Conservatory	10
	Application sheet - BasicGrip, Conservatory	11
	Advice on installing BasicGrip	12
	Tools	13
	Installation times	14
	Heated screed	14
	Danfoss screed additives	14
	Installation	15
	Screed joints	15
	Movement gap strips for BasicRail and BasicClip	15
	Important! Before and after installation of screed
	16+Heating up screed	16
	Active load and height of screed	16
	Categories of loaded areas, in accordance with EN 1991	17
	Minimum nominal thickness in mm for active loads in heated screed with Basic heating systems	17
	After installation	17
	Information for finished floors	18
	Thermal resistance Rfinished floor of different finishes fully bonded to the floor	18
	Output tables, BasicRail heating system	19
	Output tables, BasicClip and BasicGrip heating systems	27

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Underfloor heating with heated screed as liquid or cement screed

Underfloor heating, with its low supply temperature, has many advantages. It runs maintenancefree, is energy saving and ensures comfortable room temperatures.

Rooms with underfloor heating allow greater freedom for interior design. The Danfoss FH pipes enclosed in cement or liquid screed give off

comfortable warmth without any drafts, - creating a dustfree, hygenic environment.

Basic heating systems The Danfoss underfloor heating systems with heated screed - Basic heating systems - are low temperature underfloor heating systems suitable for all new buildings. They can be installed in all rooms and floors of blocks of flats or in business premises.

The grey Danfoss composite pipes are installed, according to worked out distances, using BasicClip, BasicGrip or BasicRail on insulation panels giving the pipe lay-out. The water flowing though the composite or PE-RT pipes gently warms the screed which works as heating element. It is possible to lay all common floor

coverings on top of Danfoss underfloor heating, except perhaps heavy exotic carpets or special engineered wood flooring which would need extra calculations when planning the system. Since low water temperatures are required to achieve the required room temperatures, Danfoss underfloor heating systems are ideal for use with boilers, solar energy and heat pumps. This means that producers of energy saving heat will find an ideal partner in underfloor heating.

Advantages	• Low energy saving temperature
	• Cost effective, no additional costs
	• 100% impervious to air, no heat exchanger
	necessary
	• Comfortable, clean and healthy air
	• Greater freedom of interior design, more living
	space for whole family
	• Maintenance-free

Relevant standards for underfloor heating

The following regulations and EN Standards should be observed when planning and installing floor heating:

EN 1991 Action on structures

EN 1264 Underfloor Heating, Systems and

Components

DIN 4109 Sound Insulation in the Building

industry

ISO EN 140-8 Measurement of sound insulation in buildings and building elements

EN 13813 Screed Material and Floor Screeds

local building regulations.

Professional information on interface co-ordination when planning heated underfloor construction (ref: BVF).

For underfloor heating the EN 1264, part 4 standards are applicable.

Three Danfoss basic constructions are possible: A, B and C.

They meet the minimum insulation requirements in relation to use and position in the house.

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Minimum thermal resistance of insulation under floor heating systems from EN 1264, part4

Construction	A	B		C
	Heated room	Unheated or	Outside air temperature below construction
	below	occasionally
			Design	Design	Design
		heated room
		below or	outside	outside	outside
		room on	temperature	temperature	temperature
		ground floor*	Td > 0° C	0° C > Td ≥ -5° C	-5° C > Td ≥ -15° C
Thermal
resistance	0.75	1.25	1.25	1.5	2
(m2 K/W)

* When groundwater table is < 5 m this value should be raised!

BasicRail The composite pipes are clipped onto the BasicRail self-adhesive clip rails at regular distances.

The maximum of 2 m between the clip rails should only be applied when using cement screed. When using liquid screed a maximum distance of 1m should be observed. Because of the fluid consistency of liquid screed it could run under the pipes and can push them upwards.

In accordance with EN 1264 Danfoss FH pipes should be laid more than

•50 mm away from vertical construction, such as walls

•200 mm from chimneys and open fire places, open and walled-up shafts, as well as lift shafts

BasicClip The BasicClip System is a tacker system where the pipes are tacked onto the insulation with u-shaped tacker pins. The insulation overlap panels are supplied as 2 x 1 m pre-folded panels. The foil clad panels give a perfect grip for the barbs in the EPS and under the foil.

The grid pattern on the panel foil is 50 mm which allows the different laying distances to be kept : 100 and 150 mm for Edge Zones, and 200, 250 and 300 mm for Comfort Zones.

Any additional insulation should be laid under the BasicClip overlap panels.

BasicClip insulation overlap panels are available in 2 variations:

•with 35 mm thermal and impact sound insulation EPS

•with 20 mm thermal and impact sound insulation EPS

For optimum installation of the system an expansion profile is available to overcome expansion gaps and door thresholds.

The system is suitable for liquid (CAF) and cement screeds (CT).

BasicGrip The BasicGrip panel system consists of deeply drawn foil with studs that allow perfect laying of pipes.

With their size of 1 x 1 m, the panels are easy to lay and can be installed by just one person.

The panels can be cut with the usual cutter knife. The studded panels facilitate correct pipe distances. Laying the pipes diagonally is possible without additional grips. It is safe to walk on the strong foam studded panels.

When using the BasicGrip panel without thermal insulation the deeply drawn foil is correspondingly thicker.

The laying distance is calculated in multiples of 50 mm, so that possible pipe distances in the Edge Zone are 100 and 150 mm and in the Comfort Zone 200, 250 and 300 mm are achieved.

Any additional insulation should be laid under the BasicGrip panels.

BasicGrip panels are available in 3 variations:

•with 35 mm thermal and impact sound insulation EPS

•with 11 mm thermal insulation EPS

•without insulation

For optimum installation of the system, the following additional products are on offer:

•An expansion profile to overcome expansion gaps and door thresholds

•Door and manifold panels with varying insulation thickness

•PE –String to seal perimeter insulation when using liquid screed

The system is suitable for liquid (CAF) and cement screeds (CT).

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Basic insulation overlap panels

The individual components of the overlap insulation panels are bonded and consist of the following layers:

•Bonded multi-layer foil with 5 cm grids to facilitate exact pipe laying

•A thermal and impact sound insulation layer made of polystyrene

What type of insulation is used, depends on the type of floor and the building. If the concrete is even and free of other installations, a single layer of insulation is sufficient. In 90% of all new buildings heating, sanitation and electrical services are installed which require double layer insulation.

Continuous sound impact insulation also has to be installed.

For height adjustment, thermal insulation, e.g. EPS 035 DEO 20 mm is laid between the pipe channels and gaps around the pipes are filled with Danfoss Dry Levelling Compound.

Finally, the Basic insulation overlap panels are installed. The surface of these 2 m2 (1 + 1 m2 foldable) insulation panels are very strong, safe to walk on, and form a very good surface for BasicClip and BasicRail heating systems.

The strong foil is a technically perfect base for cement and liquid screeds.

Floor constructions	A: Floor construction above rooms of equal use/ temperature; Minimum thermal resistance
	R	min	= 0.75 m2K/W
	Construction with insulation panels 20/35 mm plus additional insulation:
	Insulation panels 20/35 mm			20	20	20	20	35	35	35	35	mm
	R = 0.44 m2K/W; R = 0.77 m2K/W
				+	+	+	+	+	+	+	+
	EPS DEO λ =0.040 W/mK			20				-				mm
	EPS DEO λ=0.035 W/mK				20				-			mm
	PUR λ=0.030 W/mK					20				-		mm
	PUR λ =0.025 W/mK						20				-	mm
	Total thermal resistance R			0.94	1.01	1.11	1.27	0.77	0.77	0.77	0.77	m2 K/W
	Total insulation thickness			40	40	40	40	35	35	35	35	mm
	B: Floor construction above occasionally or permanently unheated rooms, cellars or ground-
	floor (ground water table > 5 m); minimum thermal resistance Rmin = 1.25 m2 K/W
	Construction with insulation panels 20/35 mm plus additional insulation :
	Insulation 20/35 mm			20	20	20	20	35	35	35	35	mm
	R = 0.44 m2K/W; R = 0.77 m2K/W
				+	+	+	+	+	+	+	+
	EPS DEO λ = 0.040 W/mK			40				20				mm
	EPS DEO λ = 0.035 W/mK				30				20			mm
	PUR λ = 0 .030 W/mK					30				20		mm
	PUR λ = 0.025 W/mK						30				20	mm
	Total thermal resistance R			1.44	1.30	1.44	1.64	1.27	1.34	1.43	1.57	m2 K/W
	Total insulation thickness			60	50	50	50	55	55	55	55	mm
	C: Construction for floors against outside air; minimum thermal resistance Rmin = 2.0 m2 K/W
	Construction with insulation panels 20/35 mm plus additional insulation:
	Insulation 20/35 mm			20	20	20	20	35	35	35	35	mm
	R = 0.44 m2K/W; R = 0.77 m2K/W
				+	+	+	+	+	+	+	+
	EPS DEO λ = 0.040 W/mK			70				50				mm
	EPS DEO λ = 0.035 W/mK				60				50			mm
	PUR λ = 0 .030 W/mK					50				40		mm
	PUR λ = 0.025 W/mK						40				40	mm
	Total thermal resistance R			2.19	2.16	2.11	2.04	2.02	2.2	2.1	2.37	m2 K/W
	Total insulation thickness			90	80	70	60	85	85	75	75	mm

λ = Thermal conductivity in W/mK.

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Thermal resistance	Other combinations are possible to achieve
	certain built-up heights. The following table
	indicates the thermal resistance of the different
	insulations, dependent on their thickness.

The final layer should always be the Basic insulation overlap panels 20/35 mm to guarantee a stable base for further installation.

RInsulation

=

d

EPS 045 DES

EPS 040 DEO

EPS 035 DEO

PUR λ = 0.03 W/mK

PUR λ = 0.025 W/mK

λ

Thickness

Rinsulation

Thickness

Rinsulation

Thickness

Rinsulation

Thickness

Rinsulation

Thickness

Rinsulation

[mm]

[m2 K/W]

[mm]

[m2 K/W]

[mm]

[m2 K/W]

[mm]

[m2 K/W]

[mm]

[m2 K/W]

[	Insulation thickness in (mm)	]	10	0.22	10	0.25	10	0.29	10	0.33	10	0.40
			15	0.33	15	0.38	15	0.43	15	0.50	15	0.60
	Thermal resistance in (W/mK)
			20	0.44	20	0.50	20	0.57	20	0.67	20	0.80
			25	0.56	25	0.63	25	0.71	25	0.83	25	1.00
			30	0.67	30	0.75	30	0.86	30	1.00	30	1.20
			35	0.78	35	0.88	35	1.00	35	1.17	35	1.40
			40	0.89	40	1.00	40	1.14	40	1.33	40	1.60
			45	1.00	45	1.13	45	1.29	45	1.50	45	1.80
			50	1.11	50	1.25	50	1.43	50	1.67	50	2.00
			55	1.22	55	1.38	55	1.57	55	1.83	55	2.20
			60	1.33	60	1.50	60	1.71	60	2.00	60	2.40
			65	1.44	65	1.63	65	1.86	65	2.17	65	2.60
			70	1.56	70	1.75	70	2.00	70	2.33	70	2.80
			75	1.67	75	1.88	75	2.14	75	2.50	75	3.00
			80	1.78	80	2.00	80	2.29	80	2.67	80	3.20
			85	1.89	85	2.13	85	2.43	85	2.83	85	3.40
			90	2.00	90	2.25	90	2.57	90	3.00	90	3.60
			95	2.11	95	2.38	95	2.71	95	3.17	95	3.80
			100	2.22	100	2.50	100	2.86	100	3.33	100	4.00
			105	2.33	105	2.63	105	3.00	105	3.50	105	4.20
			110	2.44	110	2.75	110	3.14	110	3.67	110	4.40
			115	2.56	115	2.88	115	3.29	115	3.83	115	4.60
			120	2.67	120	3.00	120	3.43	120	4.00	120	4.80
			125	2.78	125	3.13	125	3.57	125	4.17	125	5.00
			130	2.89	130	3.25	130	3.71	130	4.33	130	5.20
			135	3.00	135	3.38	135	3.86	135	4.50	135	5.40
			140	3.11	140	3.50	140	4.00	140	4.67	140	5.60
			145	3.22	145	3.63	145	4.14	145	4.83	145	5.80
			150	3.33	150	3.75	150	4.29	150	5.00	150	6.00
			155	3.44	155	3.88	155	4.43	155	5.17	155	6.20
			160	3.56	160	4.00	160	4.57	160	5.33	160	6.40
			165	3.67	165	4.13	165	4.71	165	5.50	165	6.60
			170	3.78	170	4.25	170	4.86	170	5.67	170	6.80
			175	3.89	175	4.38	175	5.00	175	5.83	175	7.00
			180	4.00	180	4.50	180	5.14	180	6.00	180	7.20
			185	4.11	185	4.63	185	5.29	185	6.17	185	7.40
			190	4.22	190	4.75	190	5.43	190	6.33	190	7.60
			195	4.33	195	4.88	195	5.57	195	6.50	195	7.80
			200	4.44	200	5.00	200	5.71	200	6.67	200	8.00

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Basic perimeter insulation

The Basic Perimeter insulation 150 mm consists of 8 mm PE-Foam. The double-sided adhesive tape on the back allows it to be easily attached to the wall. The adhesive tape on the room side of the foil attaches the perimeter insulation to the insulation panels.

In accordance with EN 1264 the perimeter insulation can be compressed by 5 mm and thus,

together with the insulation panels, forms the required tank for the screed as well as thermal and sound bridges.

When using a double layer of insulation, the additional insulation should be laid first. Should their thickness exceed 5 cm, the perimeter insulation is installed on top of the additional insulation.

Tanking for	When using liquid screed the insulation joints
liquid screed	should be taped over to accept screed with a
	very thin consistency.

BasicRail

- types of installation

The heating circuits are laid in meander form, which is an advantage when first installing the pipes in the edge zones of the room (Edge Zone) and then taking them to the centre of the room (Comfort Zone): the warmer temperatures of the heating circuit arrive at the outer zones (higher floor temperature), and the cooled down water heats the central zone (lower floor temperature).

To achieve higher output around the edges or in front of windows, you can lay the pipes in double pattern.

Please see recommended layout patterns in Danfoss application sheets.

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Application sheet

Application Sheet BasicRail

Room with floor meeting window

Heating circuit 1

Heating circuit 2

Legend

FH Composite pipe		Flow							BasicRail
CC CZ 2 = 250 mm									Distances between rails:

Liquid screed 1.00 m

Cement screed 1.50 - 2.00 m

Return

FH Composite pipe

CC EZ 1 = 88 mm

Perimeter insulation

Danfoss HES

VA.CT.H1.02

© Danfoss 11/2008

1

BasicClip and BasicGrip - types of installation

The Danfoss wet systems BasicGrip and BasicClip are laid in spiral form.

The Danfoss composite pipe is laid in spiral form starting from the edge, leading to the centre of the room. The pipe distance is twice that of the calculated pipe spacing. The pipe is then led out of the centre between the installed pipes.

The advantage is that pipes of higher temperature are next to those of lower temperature, thus

producing an even surface temperature (higher output).

Edge Zone: if a higher heat output is required, the pipes in the Edge Zone (up to 1 m from wall) can be laid closer, thus producing a higher surface temperature.

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Application sheet
	Application Sheet		BasicClip
			Conservatory
						Heating circuit 1
						Heating circuit 2
	Legend
		Pipe layout EZ 100			Supply	BasicClip clip,
		CC = 100 mm				2 clips per meter
					Return
		Pipe layout CZ 200
		CC = 200 mm			Perimeter insulation
	Danfoss HES			VA.EK.B1.02	© Danfoss 11/2008	1
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Application sheet

Application Sheet BasicGrip

Conservatory

Heating circuit 1

Heating circuit 2

Legend

Pipe layout EZ 100	Supply	BasicGrip panel
CC = 100 mm		Size: 1 x 1 m
	Return
Pipe layout CZ 200
CC = 200 mm	Perimeter insulation

Danfoss HES

VA.EL.A1.02

© Danfoss 11/2008

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