Danfoss Indoor Heating Applications Operating guide

MAKING MODERN LIVING POSSIBLE

Installation Guide

Indoor Heating Applications Mats and cables

Installation Guide			Indoor Heating Applications & Pipe Tracing
	Table of Contents
1	Introduction			3
	1.1	Safety Instructions		3
	1.2	Installation guidelines		5
	1.3	System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		5
2	Installation step by step			6
	2.1	Calculating C-C distance for heating cables		6
	2.2	Planning the installation		7
	2.3	Preparing the installation area		7
3	Installing elements			7
	3.1	Installing heating elements		8
	3.2	Sensor Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .		8
4	Indoor applications			9
	4.1	Floor heating in thin beddings (< 3 cm)		10
	4.2	Floor heating in joist floor constructions		11
	4.3	Floor heating with Danfoss Reflect		12
	4.4	Floor heating in concrete floors (> 3 cm)		13
	4.5	Frost protection of pipe systems		14
5	Optional settings			17

Danfoss

VIEGC5XD202

Installation Guide	Indoor Heating Applications & Pipe Tracing

1 Introduction

In this installation manual, the word “element” refers to both heating cables and heating mats.

If the words “heating cable” or “heating mat” are used, the instruction in question applies only to this type of element.

All dimensioning, product selection, installation and commissioning of any given application are the responsibility of an authorized installer.

Any application using heating elements or thermostats purchased by end user must be approved by an authorized electrician prior to commissioning.

•Including type, size, installation and connection of the heating element.

•Including type, size, connection and settings of the thermostat controlling the heating element.

•Children shall not play with the heating element.

•This heating element can be used by children aged from 8 years and above and

persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction concerning use of the appliance in a safe way and understand the hazards involved.

•Cleaning and user maintenance shall not be made by children without supervision.

The intended use of the heating elements covered by this installation manual is floor heating, only.

•According to IEC 60335 the mats may not be installed in a metallic floor or storage heating application.

•Mats shall be fully embedded in at least 5 mm concrete, screed, tile adhesive or similar. incl. tiles

1.1Safety Instructions

Never cut or shorten the heating element

• Cutting the heating element will void the warranty.

• Cold leads can be shortened to suit requirements.

Danfoss

VIEGC502 VIEXD202

Installation Guide	Indoor Heating Applications & Pipe Tracing

Elements must always be installed according to local building regulations and wiring rules as well as the guidelines in this installation manual.

•Any other installation may hamper element functionality or constitute a safety risk, and will void the warranty.

Elements must always be connected by an authorised electrician using a fixed connection.

•De-energize all power circuits before installation and service.

•Each heating element screen must be earthed in accordance with local electricity regulations and connected to a residual current device (RCD).

•RCD trip rating is max. 30 mA.

•Heating elements must be connected via a switch providing all pole disconnection.

•The element must be equipped with a correctly sized fuse or circuit breaker according to local regulations.

			1.	Heating cable
			2.	Thermostat
5			3.	Sensor
			4.	Screen
6	2		5.	RCD
			6.	All-pole switch
	7		7.	Fuse
		3	Connections
			•	Phase - Brown
	4	1	•	Neutral - Blue
			•	Earth - Screen

The presence of a heating mat must

• be made evident by affixing caution signs or markings at the power connection fittings and/or frequently along the circuit line where clearly visible

• be stated in any electrical documentation following the installation.

Never exceed the maximum heat density (W/m2) for the actual application.

Danfoss

VIEGC5XD202

Installation Guide	Indoor Heating Applications & Pipe Tracing

1.2Installation guidelines

Prepare the installation site properly by removing sharp objects, dirt, etc.

Keep elements clear of insulation material, other heating sources and expansion joints

The elements and sensors shall be installed minimum 30 mm away from conductive parts of the building, e.g. water pipes.

Regularly measure ohmic resist-	Do not lay heating elements
ance and insulation resistance	under walls and fixed obstacles.
before and during installation	Min. 6 cm air is required

Elements may not touch or cross						The elements and especially the
	themselves or other elements					connection must be protected
and must be evenly distributed							from stress and strain.
			on areas.

A floor sensor is mandatory and	The element should be tempera-
must be connected to a thermo-	ture controlled and not operate
stat limiting the floor tempera-	at ambient temperature higher
ture to maximum 35°C.	than 10°C in outdoor applica-
	tions.

• Caution! Do not use M1 classified elements	• Store in a dry, warm place at temperatures
in areas subject to high mechanical loads or	between +5 °C to +30 °C.
impact, see section 1.3 for classification.

1.3System overview

Standards

ECcomfort

ECbasic

ECflex

ECheat

ECmat

ECaqua

(LXmat)

(EFSIC)

(EFTPC)

(EFSM)

(EFTM)

(EFTWC)

60800:2009 (cable)

+ (M1)

+ (M2)

-

-

+ (M1)

-

60335-2-96 (mat)

+

-

-

+

+

-

Danfoss

VIEGC502 VIEXD202

Installation Guide	Indoor Heating Applications & Pipe Tracing
M1		M2
For use in applications with low risk of mechani-		For use in applications with high risk of mechani-
cal damage, e.g. installed on even surfaces and		cal damage.

embedded in screeds with no sharp objects.

	Floor heating in:	ECcomfort	ECbasic	ECflex	ECheat	ECmat	ECaqua
		(LXmat)	(EFSIC)	(EFTPC)	(EFSM)	(EFTM)	(EFTWC)
Thin Beddings (< 3 cm)		+	+	-	+	+	-
Joist Floor Constructions		+	-	+	-	-	-
Danfoss Reflect		(+)	-	+	-	-	-
Concrete Floors (> 3 cm)		(+)	+	+	(+)	(+)	-
Frost protection of pipes		-	(+)	+	-	-	+
2	Installation step by step

2.1Calculating C-C distance for heating cables

	The C-C distance is the distance in centimetres	C - C [cm] =	Area [m2]	x 100 cm
	from the centre of one cable to the centre of the
			Cable length [m]
	next.

or

For heating of pipes, please refer to the number of cables per metre, see section 4.5.

C - C[cm] =		Cable output [W/m]	x 100 cm
		Heat density [W/m2]
Max. C-C distance
Thin beddings (<3 cm)			10 cm
Joist floor constructions			20 cm
Danfoss Reflect			20 cm
Concrete floors (>3 cm)			15 cm

•Heating cable bending diameter must be at least 6 times cable diameter.

•The actual cable length may vary +/- 2 %.

230V/400V

		C-C [cm]	W/m² @ 6 W/m	W/m² @ 10 W/m	W/m² @ 18 W/m	W/m² @ 20 W/m
		5	120	200	-	-
		7,5	80	133	-	-
		10	60	100	180	200
		12,5	48	80	144	160
		15	40	67	120	133
		Danfoss		VIEGC5XD202