Danfoss ECtemp 330 User manual

ECtemp 330 (+5 to +45°C)
Electronic Thermostat
Installation Guide
electricheating.danfoss.com

ECtemp 330 (+5 to +45°C)
Installation Guide2
Danfoss A/S is not liable or bound by warranty if these in-
structions are not adhered to during installation or service.
The English language is used for the original instructions.
Other languages are a translation of the original instructions.
© 2013 Copyright Danfoss A/S

ECtemp 330 (+5 to +45°C)
3Installation Guide
1 Introduction
ECtemp 330 is an electronic thermostat to be installed in
electric cabinets with DIN rail attachment. The thermostat
must be installed via an all-pole disconnection switch. Ei-
ther a floor sensor or an external room sensor must be used
to measure and control the desired temperature.
The thermostat has a button to adjust the temperature
setting with a scale from +5 to +45°C. An LED indicator
shows standby periods (green light) and heating periods
(red light).
More information on this product can also be found at:
ectemp.danfoss.com
Table of Contents
1 Introduction . . . . . . . . . . . . . . . . . . . . . 3
1.1 Technical Specifications . . . . . . . . . . . 4
1.2 Safety Instructions . . . . . . . . . . . . . . . 5
2 Mounting Instructions . . . . . . . . . . . . . . . 6
3 Settings . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Warranty. . . . . . . . . . . . . . . . . . . . . . . . 9
5 Disposal Instruction . . . . . . . . . . . . . . . . 9

ECtemp 330 (+5 to +45°C)
Installation Guide4
1.1 Technical Specifications
Operation voltage 220-240V~, 50Hz
Standby power consumption Max 0.25W
Relay:
Resistive load
Inductive load
Max 16A / 3680W @ 230V
cos φ= 0.3 max1A
Sensing units NTC 15kOhm at 25°C
Sensing values:
0°C
25°C
50°C
42kOhm
15kOhm
6kOhm
Hysteresis ± 0.2°C
Ambient temperature 10°C to +50°C
Lowering in economy periods -5°C
Temperature range +5 to +45°C
Cable specification max 1x4mm² or 2x2,5mm²
Ball pressure temperature 75°C
Pollution degree 2 (domestic use)
Type 1C
Storage temperature -20°C to +65°C
IP class 20

ECtemp 330 (+5 to +45°C)
5Installation Guide
Protection class Class II -
Dimensions 86 x 36 x 58mm
Weight 83g
The product complies with the EN/IEC Standard“Automatic
electrical controls for household and similar use”:
• EN/IEC 60730-1 (general)
• EN/IEC 60730-2-9 (thermostat)
1.2 Safety Instructions
Make sure the mains supply to the thermostat is turned off
before installation.
IMPORTANT: When the thermostat is used to control a
floor heating element in connection with a wooden floor or
similar material, always use a floor sensor and never set the
maximum floor temperature to more than 35°C.
Please also note the following:
• The installation of the thermostat must be done by an
authorized and qualified installer according to local
regulations.
• The thermostat must be connected to a power supply
via an all-pole disconnection switch.
• The sensor is to be considered as live voltage. Have
this in mind if the sensor must be extended.

ECtemp 330 (+5 to +45°C)
Installation Guide6
• Always connect the thermostat to continuous power
supply.
• Do not expose the thermostat to moisture, water,
dust, and excessive heat.
2 Mounting Instructions
Please observe the following placement guidelines:
• Install the thermostat in an electric cabinet with DIN
rail attachment or a separate DIN attachment accord-
ing to local regulation on IP classes.
• Do not place the thermostat in a way that it will be
exposed to direct sunlight.
Follow the steps below to mount the thermostat:
1. Click the thermostat on to the DIN rail attachment.
2. Connect the thermostat according to the connection
diagram.
+5°C to +45°C

ECtemp 330 (+5 to +45°C)
7Installation Guide
N
L
PE
The screen of the heating cable must be connected
to the earth conductor of the power supply cable by
using a separate connector.
Note: Always install the floor sensor in a conduit in
the floor.
3. Turn on the power supply.
3 Settings
If a floor sensor is used, please be aware of the following:
• The floor temperature is measured where the sensor
is placed.
• The temperature of the bottom of a wooden floor can
be up to 10 degrees higher than the top.

ECtemp 330 (+5 to +45°C)
Installation Guide8
• Floor manufactures often specify the max tempera-
ture on the top surface of the floor (usually 27-28˚C).
• Always use a floor sensor to control floor heating.
Without a floor sensor, the temperature control may
be less accurate and you risk overheating the floor.
Thermal
resist-
ance
[m²K/W]
Examples of
flooring
Details Approximate
setting for
25˚C floor
temperature
0.05 8 mm HDF based
laminate
> 800 kg/m³ 28˚C
0.10 14 mm beech
parquet
650 - 800
kg/m³
31˚C
0.13 22 mm solid oak
plank
> 800 kg/m³ 32˚C
< 0.17 Max. carpet thick-
ness suitable for
floor heating
acc. to EN
1307
34˚C
0.18 22 mm solid fir
planks
450 - 650
kg/m³
35°C

ECtemp 330 (+5 to +45°C)
9Installation Guide
4 Warranty
5 Disposal Instruction

ECtemp 330 (+5 to +45°C)
Installation Guide10