Danfoss ECtemp 550 User manual

MAKING MODERN LIVING POSSIBLE

User Guide

ECtemp 550

Electronic Intelligent Thermostat

www.EH.danfoss.com

Table of Contents

1 Introduction ............... 4

1.1 Safety Instructions ........ 5

2Settings ................. 6

2.1 Frost Protection ......... 8

2.2 Time and Day of Week ...... 9

2.3 Periods with Lowering of Temper-

ature ................ 10

2.4 Minimum Floor Temperature .. 14

2.5 Safety Lock ............ 15

2.6 Turning the Thermostat On and

Off ................. 16

3Saving Clock Settings (Backup Bat-

tery) .................... 17

4 Error Messages ............. 17

5 Warranty ................. 18

6 Disposal Instruction .......... 19

ECtemp 550

User Guide 3

1 Introduction

ECtemp 550 is an adaptive temperature controller specially

designed for floor heating systems by using the built-in

room sensor and an external floor sensor . It can, however,

also be used for other heating systems (e.g. power heating

units).

The thermostat will measure the radiant temperature from

the floor combined with the air temperature in the room to

compensate for the outside weather condition. This means

that ECtemp 550 will automatically adjust the heating to

meet your comfort levels regardless of changing weather

conditions shortly after the settings are set and the desired

comfort temperature has been selected. A sudden temper-

ature drop in the room will also be detected. Instead of im-

mediately switching on the heating to compensate, infor-

mation is stored and a check will be made to detect wheth-

er this sudden drop of temperature may be caused by, for

instance, a window that has been opened for 10 minutes.

ECtemp 550

4 User Guide

Even the programming of economy temperatures (i.e. low-

ering of temperature at night and when you are at work) is

very simple. A calculation of the heating start is not needed

to reach a specific temperature at a specific time. Just tell

the ECtemp 550 when you want the comfort temperature,

and the rest will happen automatically; by identifying the

rate of heat loss from the room, ECtemp 550 knows when

to start heating in order to achieve the selected tempera-

ture at the right time.

1.1 Safety Instructions

Please observe the following guidelines:

▪Do not cover the thermostat, e.g. by hanging towels or

similar items in front of it! This will impair the ability of

the thermostat to sense and adjust the room tempera-

ture correctly.

▪Do not spill liquids of any kind into the thermostat.

▪Do not open, disassemble, or tamper with the thermo-

stat in any way.

▪If the thermostat is installed in a place frequented by

small children, use the safety lock.

▪Do not interrupt the power supply to the thermostat.

▪The installation of the thermostat must be done by an

authorized and qualified installer according to local

regulations.

ECtemp 550

User Guide 5

2 Settings

Using clear visual symbols, the display of the thermostat

shows active and selected functions, the actual tempera-

ture and the time:





















1. Symbol for frost protection.

2. Numeric display of time, temperature, text, etc.

3. Day of week.

4. Flashing indication of actual time.

5. Symbol for setting of time and day.

6. Symbol for timer mode.

7. Symbol indicating that the floor is being heated.

8. Symbol for degrees.

ECtemp 550

6 User Guide

9. Safety lock.

10. Economy periods (i.e. periods with lowering of tem-

perature).

Basic rules for changing thermostat settings

Accessing different

settings When you press and hold the but-

ton for a certain number of sec-

onds, different layers of settings will

appear.

To increase a value Turn the button to the right (clock-

wise).

To decrease a value Turn the button to the left (counter-

clockwise).

To confirm a value

or go to the next

setting

Press the button once.

The unit of meas-

urement for tem-

perature

The temperature is either shown in

celsius degrees (5°C to 35°C) if a

room sensor is used, or as a scale

from 1 to 10 (where each step cor-

responds to approximately 5°C) if

only a floor sensor is used .

ECtemp 550

User Guide 7

Network installation

If more ECtemp 550 thermostats have been installed, they

may be connected in a network. If so, one of the thermo-

stats is defined as the master unit controlling the time, day

of week and lowering of temperature during economy peri-

ods for the other so-called slave units. This means that

changes to these settings must be made on the master

thermostat and will then automatically take effect on all

"slave" thermostats.

Please contact the electrician to find out if the thermostats

in your house are linked in a network and, if so, ask which

thermostat is configured as master unit.

2.1 Frost Protection

How to set the thermostat in frost protection mode

1. Turn the button counter-clockwise un-

til the temperature reaches +5°C (or 1

if a scale from 1 to 10 is used).

A frost symbol will now appear on

the display.

ECtemp 550

8 User Guide

2.2 Time and Day of Week

The time and day of week is not set by default.

How to set the time and day of week

1. Press and hold the button for 3 sec-

onds.

The symbol for setting of time, the

time and the number of the day in the

week will be shown on the display

2. Turn the button to the right or left.

Every time the time passes 00:00, the day of week

number will go 1 day up/down depending on which

way you turn the button.

The number you choose will be the day of the current

day of the week, i.e. the numbers 1-7 do not corre-

spond to any specific day. For example, if today is

Tuesday and you select 2 on the display, Tuesday will

correspond to number 2.

3. Set the time correctly by turning the button.

ECtemp 550

User Guide 9

4. When the right time is found, press the button once to

save the settings.

2.3 Periods with Lowering of Temperature

With ECtemp 550 you have the possibility of either setting

the thermostat to keep a constant temperature, or let the

thermostat automatically switch between periods with a

lower temperature (also called economy temperature) and

periods with comfort temperature.

By default, the thermostat is set to the following comfort

periods:

▪Monday - Friday: 6:00 - 8:00 and 16:00 - 22:30.

▪Saturday - Sunday: 6:00 - 22:30.

In order to automatically switch between comfort tempera-

ture and economy temperature (e.g. when going to bed or

to work), the timer function is used.

The temperature will be lowered by a certain number of

degrees compared to the comfort temperature. By default

this number is preset to -5°C.

If the adaptive function is active (this is normally the case),

you only need to select the time at which you require com-

fort and economy temperatures. The thermostat will then

calculate when the heating should start in order to reach

the desired temperature at the specified time.

ECtemp 550

10 User Guide

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