Schluter Systems DH E RS D Bedienungsanleitung

DH E RS D/BW

Smart Programmable Electronic Thermostat

for Heating Cable

User’s Guide

For further information or to consult this guide online,

please visit www.schluter.com

554586 01/2014

1.Description

The DH E RS D/BW electronic thermostat can be used to control

heating ﬂoors with electrical current − with a resistive load −

ranging from 0 A to 16 A at 120/208/240 VAC. It has an easy

user interface and can manage up to four programming periods

a day. It keeps the temperature of a room ( mode) and a

ﬂoor ( mode) at a requested set point with a high degree

of accuracy.

Floor Mode (factory setting): this control method is ideal

in areas where you want a warm ﬂoor at any time and when

the temperature of the ambient air can be high without causing

discomfort. For example, in a bathroom.

WARNING WARNING

Before installing and operating this product, the owner

and/or installer must read, understand and follow

these instructions and keep them handy for future

reference. If these instructions are not followed, the

warranty will be considered null and void and the

manufacturer deems no further responsibility for this

product. Moreover, the following instructions must

be adhered to in order to avoid personal injuries or

property damages, serious injuries and potentially

fatal electric shocks. All electric connections must

be made by a qualiﬁed electrician, according to the

electrical and building codes effective in your region.

Do NOT connect this product to a supply source other

than 120 VAC, 208 VAC or 240 VAC, and do not exceed

the speciﬁed load limits. Protect the heating system

with the appropriate circuit breaker or fuse. You

must regularly clean dirt accumulations on or in the

thermostat. Do NOT use ﬂuid to clean thermostat air

vents. Do NOT use where exposed to water.

Ambient Mode (you only have to press down the

A/F button to switch from one mode to the other): this

control method is ideal when you want a stable ambient air

temperature (without ﬂuctuation). Usually, this mode is used in

large and often occupied rooms where temperature variations

can be uncomfortable. For example, in a kitchen, a living room

or a bedroom.

Some factors cause variations in ambient air temperature. They

include large windows (heat losses or gains due to outside

temperature) and other heat sources such as a central heating

system, a ﬁreplace, etc. In all these cases, the mode will

ensure a uniform temperature.

This Thermostat is not Compatible with the Following

Installations:

• electrical current higher than 16 A with a resistive load (3840 W

@ 240 VAC, 3330 W @ 208 VAC and 1920 W @ 120 VAC);

• inductive load (presence of a contactor or relay); and

• central heating system.

Parts Supplied:

• one (1) thermostat;

• two (2) mounting screws;

• four (4) solderless connectors suitable for copper wires;

• one (1) ﬂoor sensor.

2. Installation

Selection of Thermostat and Sensor Location

The thermostat must be mounted on a connection box, at

around 1.5 m (5 feet) above the ﬂoor level, on a section of the

wall exempt from pipes or air ducts.

Do not install the thermostat in a location where temperature

measurements could be altered. For example:

• close to a window, on an external wall, or close to a door

leading outside;

• exposed directly to the light or heat of the Sun, a lamp, a

ﬁreplace or any other heat source;

• close or in front of an air outlet;

• close to concealed ducts or a chimney; and

• in a location with poor air ﬂow (e.g. behind a door), or with

frequent air drafts (e.g. head of stairs).

To install the sensor, refer to the installation guide of your

heating ﬂoor.

Thermostat Mounting and Connection

1. Cut off power supply on lead wires at the electrical

panel in order to avoid any risk of electric shock;

Ensure that the thermostat will be installed on a

junction box located in an uninsulated wall;

2. Ensure that the air vents of the thermostat are clean and clear

of any obstructions;

3.Using a screwdriver, loosen the screw retaining the mounting

base and front part of the thermostat. Remove the front part of

the thermostat from the mounting base by tilting it upward;

4. Align and secure the mounting base to the connection box

using the two screws supplied;

5. Route wires coming from the wall through the hole of the

mounting base and make the required connections using

the “Four-wire installation” ﬁgure, and using the supplied

solderless connectors. A pair of wires (black) must be

connected to the power source (120-208-240 VAC) and

another pair (yellow) must be connected to the heating

cable (refer to the drawings displayed on the back of the

thermostat). For connections with aluminum wires, you must

use CO/ALR connectors. Please note that thermostat wires

do not have polarity, meaning that any wire can be connected

to the other. Then, connect the wires of the ﬂoor temperature

sensor at the indicated location behind the thermostat.

Four-wire installation

6. Reinstall the front part of the thermostat on the mounting base

and tighten the screw at the bottom of the unit;

7. Turn on the power;

8. Set the thermostat to the desired setting (see the following

section).

3. Operation

Security mode

Ambient

temperature

(Ambient mode)

Floor

temperature

(Floor mode)

First Start-up

At the ﬁrst start-up, the thermostat is initially in the Man (manual)

and modes. The temperature is displayed in degrees Celsius

and the standard factory set point adjustment is 21°C (70°F).

The hour displays --:-- and must be adjusted before switching

to the Auto or Pre Prog mode. The maximum ﬂoor temperature

is limited to 28°C (82°F).

Ambient and Floor Temperature

The ﬁgures displayed below the icon indicate the ambient

temperature, ±1 degree. The ﬁgures displayed below the

icon indicate the ﬂoor temperature, ±1 degree.

Both temperatures can be displayed in degrees Celsius or

Fahrenheit (see “Display in degrees Celsius/Fahrenheit”).

Temperature Set Points

The ﬁgures displayed beside the icon indicate the ambient

() or the ﬂoor ( ) temperature set points. They can be

displayed in degrees Celsius or Fahrenheit (see “Display in

degrees Celsius/Fahrenheit”).

Out of any adjustment mode, press down the + button to

increase the set point, or the - button to decrease it. Set points

can only be adjusted by increments of 1 degree. To quickly scroll

through the set point values, press and hold down the button.

Maximum Floor Temperature Limitation

At any time, the ﬂoor temperature (in mode) is maintained at

less than 28°C (82°F) in order to avoid overheating caused by an

excessive heating request, which could damage some materials

or be detrimental for health.

Adjustment of the Hour and the Day of the Week

Adjustment procedure of the hour and the day of the week.

1.Press down the Day/Hr button, whether it is in Man, Auto or

Pre Prog mode.

2.At this moment, the icon and the day of the week blinks and

you can adjust the day of the week using the + or - button and

conﬁrm your choice by pressing down the Mode or Day/Hr

button. You can also press down the desired day of the week

button without using the + or - button and conﬁrm your choice

using the Mode or Day/Hr button.

3.The two ﬁgures indicating the hour blink. You must adjust

them using the + or - button and conﬁrm your choice by

pressing down the Mode or Day/Hr button.

4.The two ﬁgures indicating the minutes blink. You must adjust

them using the + or - button and conﬁrm your choice by

pressing down the Mode or Day/Hr button. The adjustment

is then completed and the thermostat returns to the previous

mode.

At any time, you can exit the adjustment mode of the day and the

hour by pressing down the Exit button or by not pressing any

button during 1 minute.

In case of a power failure, the thermostat is self-sufﬁcient for 2

hours. If the failure lasts less than 2 hours, the thermostat saves

the adjustment of the hour and the day of the week. When the

power is restored after an extensive failure (more than 2 hours),

the hour and the day of the week are recovered, but you must

update them.

Display in Degrees Fahrenheit/Celsius

The thermostat can display the ambient temperature and the set

point in degrees Fahrenheit (standard factory setting) or Celsius.

Adjustment procedure for degrees Fahrenheit/Celsius display.

1.To switch from the degrees Fahrenheit to the degrees Celsius,

and conversely, simultaneously press down the + and -

buttons for more than 3 seconds until the icon blinks.

2.Press down the + button to switch from the degrees Fahrenheit

to the degrees Celsius, and conversely. The degree Fahrenheit

or Celsius symbol is displayed.

3.When the adjustment is completed, press down the Exit

button or do not press down any button during 5 seconds to

exit the adjustment function.

This adjustment can be done from any of the three principal

modes.

Manual Mode (Man)

From the Manual mode, you can manually adjust the thermostat

set point by pressing down the + or - buttons to increase the

value, or to decrease it. Please note that if the backlight is

off, the set point will not change when you press down these

buttons for the ﬁrst time instead, the backlight will be activated.

To quickly scroll through the set point values, press and hold down

the button. From mode, the set points can range between

3 and 35°C and can only be adjusted by increments of 1°C (from

37 to 95°F; by increments of 1°F from the Fahrenheit mode).

From mode, the set points can range between 3 and 28°C

(from 37 to 82°F). The thermostat will turn off if the set point is

lowered below 3°C (37°F), and the set point value displayed will

be --. The standard factory set point adjustment is 21°C (70°F)

(mode). From this mode, the screen displays the /

mode temperature, the /mode set point, the hour and

the day of the week.

This mode is initially activated when the power is turned on for the

ﬁrst time. You must adjust the hour (as described in the section

“Adjustment of the hour and the day of the week”) before switching

to other modes by pressing down the Mode or Pre Prog button.

Automatic Mode (Auto)

To switch from the Manual mode to the Automatic mode, and

conversely, press down the Mode button. The Man or Auto icon

is displayed at the bottom of the screen as applicable.

From the Automatic mode, the thermostat adjusts the set points

according to the programmed periods. If no data is entered, the

thermostat acts as in Manual mode and the standard factory

set point adjustment is 21°C (70°F) ( mode). It is always

possible to manually adjust the set point using the + or - button.

The selected set point will be effective until one period is

programmed, which represents an hour and a day of the week.

Note that, if the set point is lowered to off (--), the programming

will not be effective. It is possible to program 4 periods a day,

meaning that the set point can change automatically up to 4

times a day. The period order is not important.

From this mode, the screen displays the temperature, the set

point, the hour, the day of the week and the current programmed

period number (1 to 4; as applicable).

After programming a day of the week, you can copy this setting;

see “Copy of the Programming”.

1.To access the Programming mode, press down the day of the

week button that you want to program (Mon to Sun). Once you

release the button, the selected day of the week is displayed,

the icon blinks and the period number 1 blinks too.

2.Select the period number (1 to 4) that you want to program

using the + or - button. For each period, the hour and the set

point are displayed. The hour displays --:-- and the set point

displays -- if there is no programming for the period. You must

conﬁrm the period by pressing down the Mode button.

3.The two ﬁgures representing the hour blink to indicate that you

can adjust them (from 00 to 23) using the + or – button. You must

conﬁrm the adjustment by pressing down the Mode button.

4. After conﬁrmation, the ﬁgures representing the minutes (the

last 2 ﬁgures) blink. You can adjust and conﬁrm them in the

manner described in point 3. Note that the minutes can only

be adjusted by increments of 15 minutes.

5. The period set point blinks and you can adjust it using the

+ or - button. You must conﬁrm the adjustment by pressing

down the Mode button.

6.After set point conﬁrmation, the programming is completed.

The following period number blinks. For example, if the

previously programmed period was 1, period 2 blinks. It is

then possible to continue the programming of this period by

pressing down the Mode button. You can also select another

period using the + or – button.

7.At the end of period 4 programming, you automatically exit the

Programming mode.

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