First ELTHERM AT8 Manuale utente

ELTHERM AT8ELTHERM AT8

Programmable room thermostat

ELTHERM AT8

User's manual

Installation and maintenance instructions

FIRŠT ROTOTEHNIKA

Radegunda 54,

SI-3330 MOZIRJE, SLOVENIJA

PM7-0242-22.AT8-ang

PE VELENJE

Koroška cesta 56a, SI-3320 VELENJE

tel. 03 / 898 35 00, fax. 03 / 898 35 35

e-mail:[email protected]

PROG. HEATING LEVEL

(HIGHER ) / (LOWER) H M DAY(S)

YOUR PROGRAM SCHEDULES

ELTHERM AT8ELTHERM AT8

DEAR CUSTOMER

Congratulations

You have bought a programmable room thermostat, manufactured according to the

latest quality and safety standards. It is made according to the state of art and efficiently.

We are convinced that the use of our product will satisfy your needs to.

Thanks for your confidence

FIRŠT

THE SET CONSIST OF:

- Programmable room thermostat

- Two wall screws with inlet-piece for fixing the thermostat on the wall

- Instruction for use

In case any of above specified elements are missing or are defective require your dealer

to replace it.

Read the instructions carefully in order to be able to make use of all advantages of the

product.

! WARNING!

All examples listed in the instructions are merely indicative. The manufacturer accepts

no responsibility for incorrect hydraulic connection of machine part of installations should

comply with all safety regulations defined by law and the rules.

We reserve the right to modify the instructions and the technical data of the product

without prior notice.

GENERAL

ELTHERM AT8 is programmable room thermostat with temperature display. It has pos-

sibility to set two temperature levels between 5°C and 30°C:

- lower or economic temperature level ,

- higher or comfort temperature level , ;

On the display is shown the correct time and temperature level. With the slide switch

(page 5) is possible to choose way of operation:

- protection against freezing

- non-stop working on lower - economic temperature

- non-stop working on higher - comfort temperature

- automatic working according set program

EXAMPLES FOR USE

Example of control the rotary actuator Example of leading the gas boiler

Example of regulation of low temperature boiler

with domestic hot water treatment with room

thermostat and electric operated diverter valve

EMV 110..710s or ROTODIVERT

District heating control for hot water heating with

electric motor ball valve and room thermostat

ELTHERM AT8

MV 120/210

ELTHERM AT8

ELTHERM

AT8 EMV 110/710

RELE

BOILER

THERMOSTAT

ELTHERM AT8

EMV 110/701

EMV 110/820

Technical data

Supply voltage: .............................. 3 x 1.5V, LR6 (Expired time of batteries is approximately 2 years)

Output: ........................................... relay SPDT

Relay rating: ................................... 5(2)A, 250VAC

Hysteresis of thermostat: .............. ± 0.5K

Montage: ........................................ bottom part of thermostat on the wall, upper part with notches

Connection: .................................... 3 wire (3 x 0.75 mm2)

Ambient temperature: .................... 0°C - 50°C

Adjustable temperature range: ...... 5°C - 30°C

Housing: ......................................... plastic material

Protection degree: ......................... IP 20

Dimensions: .................................... 80x150x42mm (high x width x depth)

Weight ............................................ 0.25 kg

BOILER

THERMOSTAT

ELTHERM AT8ELTHERM AT8

MONTAGE OF THERMOSTAT

Set the room thermostat on the wall with help of added screws

and model hools, which are drew on inside of packing cardboard.

It must be set 1.5m up from floor.

You must be careful where you montage the thermostat! Thermo-

stat should be placed on neutral place in the room, that means

that distance must be between thermostat and all heating bodies

(radiators, fireplace, ...), airing openings (window, door,...) and

chimneys at least 1m. Be careful on direct influence of the sun!

In case of incorrect montage, the room sensor will not perceive

correct room temperature, and will because of temperature influ-

ence come to differences, which will have for consequence to

high or in most cases to low actual temperature in the room.

Gas boilers, stove, kitchen-range or chimney also warm up the

wall. So you must be careful on these elements when you fixing

the thermostat on the wall. The thermostat must have at least 1m

distance from these elements!

Examples of incorrect montage

room thermostat room thermostat

gas

chimney

room thermostat

chimney

room thermostat

gas

boiler

Digital programmable timer makes possible to set heating regime for each day or group

of days. 20 program switches are available. The minimum setting of switching time is 1

minute. Digital programmable timer enables temporarily manual override of program

for switching between lower ( ,) and higher ( ,) temperature level. This manual

switching is active until next program switch.

Programmable room thermostat can be used for heating and cooling application with

suitable electrical connection.

Programmable room thermostat can control directly rotary actuator for mixing valve,

electric motor ball valve, circulation pump, burner, …

PROBLEM: SOLUTION

Days are flashing, pressing any key does

nothing except " " key turns output on

lower or higher temperature level.

Time of Day and Day of Week have not

been set. See “SETTING THE TIME”

Time of day was set while holding the

" " key down, but days are still flashing.

Current day of week was not set while

holding down the key. See “SETTING

THE TIME”

It is 10.00 and a program switch for

higher temperature level " " at 8.00

was entered, but the output is on lower

level state " ". Display shows the

" " and " " symbols.

After programming, the timer does not

“look back” to determine if it should be

on higher temperature level. Press the

" " key (temporary override) to turn the

output on higher level; " and "

appears in display. The timer will

assume automatic operation at the next

programmed event.

A program for 8AM Monday thru Friday

was entered, but it will not accept it and

" " is flasing,

The higher ( )/ lower ( ) level

switch was not entered as part of the

program.

" " or " " must be selected.

At turning both knobs for setting

temperature you not hear switches of

relays

- slide switch is in position " "

- batteries are exploitated

Display is beginning to fade or relay is not

switching

- batteries are exploitated. Expired time

of batteries is approximately 2 years

PROG. HEATING LEVEL

(HIGHER ) / (LOWER) H M DAY(S)

1 (Higher) 06 00 Monday – Friday

2 (Lower) 22 00 Monday – Friday

3 (Higher) 07 00 Saturday, Sunday

4 (Lower) 23 00 Saturday, Sunday

FACTORY SETTINGS

Program switch 1: heating on higher level at 06:00 Monday thru Friday

Program switch 2: heating on lower level at 22:00 Monday thru Friday

Program switch 3: heating on higher level at 07:00 Saturday and Sunday

Program switch 4: heating on lower level at 23:00 Saturday and Sunday

Four programs switches need to be entered.

TROUBLESHOOTING

ELTHERM AT8ELTHERM AT8

POSSIBILITIES OF ELECTRICAL CONNECTION

Connection of electromotor ball valve EMV..110 or rotary actuator MV 120/..

Connection of burner or pump

Connection of cooling device

Connection of compressor or heating pump

ELECTRICAL CONNECTION

Unscrew the housing of connection cords and place the bottom of the thermostat on the

wall. Conduct of power supply connects on the middle con-

nection cord (2). Signal for open-

ing is on connection cord (1). Sig-

nal for closing is on connection

cord (3). Use wire 3x0.75m2.

Screw the housing back to his

place! (Housing serves as protec-

tion against high voltage and at

the same time separate low volt-

age part from high voltage).

DAY KEY SELECTION

REVIEWING PROGRAM SWITCHES

To review the programs at any time, press “Prog.” key. Programs switches will appear

in the order they were entered with repeated presses of the “Prog.” key. After all pro-

grams have been reviewed, the blank display (--.--) will appear to allow entering another

program. Another press of the "Prog." key will display the number of free program

switches available, such as "Fr 16" if 4 program switches have been entered.

MANUAL OVERRIDE

TEMPORARY: While is selector switch in position " ", pressing the " " key once

will reverse the output; higher level to lower level or lover to higher level. The symbol

"" appears in the display to indicate a temporary override. At the next scheduled

switching time, automatic control resumes, eliminating the override.

CHANGING A PROGRAM SWITCH

Select the program switch to be changed with the “Prog.” key. A new set of days may be

selected with the “Day” key just as in initial programming. Hour and minute can be changed

with the “h” and “m” keys.

Press “Prog.” to proceed to next program switch or " " key to store the new program.

DELETING A PROGRAM SWITCH

To delete only one or a few programs: press “Prog.” key until the desired program

switch is displayed.

Press “m” key to 59 and press once more to blank out (--).

Press “h” key to 23 and press once more to blank out (--).

Press " " key, display will flash for several seconds and then enter the Run Mode.

Using the “RESET” key will delete ALL programs, the time of day, and day of the week

and program is set to factory settings.

PRESS »DAY« KEY DISPLAY

SHOWS

DAYS

0 times 1 2 3 4 5 6 7 Every day

1 time 1 2 3 4 5 6 Monday-Saturday

2 times 1 2 3 4 5 Monday-Friday

3 times 6 7 Saturday and Sunday

4 times 1 Monday

5 times 2 Tuesday

6 times 3 Wednesday

7 times 4 Thursday

8 times 5 Friday

9 times 6 Saturday

10 times 7 Sunday

ELTHERM AT8ELTHERM AT8

DESCRIPTION OF CONTROL PANEL

Slide switch for choosing the way of operating

Four ways of operating are available:

Protection against freezing (8°C)

Non-stop working on lower (economic) temperature

Non-stop working on higher (comfort) temperature

Automatic working according set program

With key < > (8) is possible temporary switch of working after program. This function

switches the program from lower - economic ( ,) to higher - comfort ( ,) tempera-

ture operation or reverse, and it's active until next switch in program.

That switching between lower - economic to higher - comfort temperature operation is

working after set program, the slide switch (3) must be in position “ ”!

LEGENDA :

1 LCD display for exact time and state of

program

2 LCD display for room temperature

3 Slide switch for choosing way of operating

4 Knob for setting higher (comfort)

temperature ( , )

5 Knob for setting lower (economic)

temperature ( , )

6 - key for setting minutes

7 - key for setting hours

8 key for the temporarily manual

override of program

9 key for setting the day of the week

10 reset key - erasing of all settings

11 key for switching in summer time and back

12 key for input the program

13 key for setting the exact time

PROGRAMMING SETTING

It is helpful to write out the program schedules before beginning. See last page !

IMPORTANT: The current time of day and day of week must be set prior to programming.

See "setting the time"

Example:

Program switch 1:

heating on higher level at 7:00 Monday thru Saturday

Program switch 2:

heating on lower level at 17:00 Monday thru Friday

Program switch 3:

heating on lower level at 19:00 Saturday

Three programs switches need to be entered. For program setting press "Prog." key

only once. Display shows factory settings:

Program switch 1 (higher level at 7:00 Monday thru Saturday)

Press " " key until symbol appears

Press "h" key to 07

Press "m" key to 00

Press "day" key to 1 2 3 4 5 6 is displayed

Press "Prog." key to enter to next program switch

Program switch 2 (lower level at 17:00 Monday thru Friday)

Press " " key until symbol appears

Press "h" key to 17

Press "m" key to 00

Press "day" key to 1 2 3 4 5 is displayed

Press "Prog." key to enter to next program switch

Program switch 3 (lower level at 19:00 Saturday)

Press " " key until symbol appears

Press "h" key to 19

Press "m" key to 00

Press "day" key until only 6 is displayed

Press "Prog." key to enter to next program switch

Program switch 4 is factory set. So you have to delete it.

Press “m” key to :59 and press once more to blank out or

press “h” key to 23 and press once more to blank out

Press " " key display will flash for several sconds (--) and

then enter Run Mode (--)

IMPORTANT:

Timer is in the same state (temperature level), which was before program setting. New

program will be reflected on the next program switch (timer does not “look back” to

determine if it should be on higher or lower level after programming). If state of timer is

not accord to program then manually temporary override it with key “ “. At the next

scheduled switching time, automatic control resumes, eliminating the override.

ELTHERM AT8ELTHERM AT8

REPLACING OF BATTERIES

Replacing of batteries is recommended before every beginning of the heating sea-

son. That's how you assure reliability of working of thermostat!

With screwdriver you separate room thermostat from support on the wall with pushing

the screwdriver into notch on bottom part of thermostat, lift

it with hand and take it off. In room thermostat are placed

three alkali batteries LR06 1.5V. In upper part is placed

one battery for weekly timer and thermometer. You must

put the new battery in the empty spot and then pull out the

used one.

In lower part there are two batteries for the

electronics of thermostat relay. You must

replace both batteries at time.

Because of batteries working of thermo-

stat is not depending of power supply (in

case of falling out the power supply the program is saved

in thermostat). Expired time of batteries is approximately 2

years, exploitation of batteries can be noticed when dis-

play in beginning to fade or relay is not switching.

AFTER REPLACING THE BATTERIES, TURN BOTH KNOBS (for higher and lower tem-

perature) TO EXTREME RIGHT AND EXTREME LEFT AND TURN THEM IN ORIGINAL

POSITION. Turning of knobs is necessary for correct placing the exit of thermostat,

without erasing the set program from memory. Always use alkaline batteries LR06,

others can leak out and damage the electrical connections.

Temperature settings

Programmable room thermostat has possibility to set two temperature levels between

5°C and 30°C:

- Higher or comfort temperature level ( ,) with knob nr. 4

- Lower or economic temperature level ( ,) with knob nr. 5

Settings of lower and higher temperature are independent of each other.

ELEMENTS OF LCD DISPLAY

LCD incorporates a number of different elements to display various data and information.

Run mode symbol

Higher ( ,) /lower

( , ) temperature level

Manual override of

temperature level

operation

Day of the week

Daylight time symbol

Time of the day or

switching time

SETTING THE TIME

NOTE: If the “h” and “m” keys are held down longer than 2 seconds, the numbers will

advance rapidly.

Press and hold the key " " during the following:

1. Press “h” to advance to the current hour (while holding down " " the key)

2. Press “m” to advance to the current minute (while holding down " " the key)

3. Press “Day” repeatedly to advance to current day (while holding down " " the key)

NOTE: If the days are flashing, it indicates the day of the week was not set when setting

the time. The timer cannot be programmed unless days of the week is entered.

MANUAL DAYLIGHT TIME CHANGEOVER

Each year, in the spring, press "±h" to advance the time an hour. In the fall, press "±h" to

set back an hour.

PROGRAM SETTINGS

The programmable weekly timer will accept up to 20 programs switches.

For every program switch is necessary to set

1. Heating level: lower ( ,) or higher ( ,) temperature level

2. Time of day (Hour and Minutes)

3. Single day or multiple days

A program is required for each higher-level event ( ,), and a program is required for

each lower-level event ( ,).

NOTE: MULTIPLE EVENTS MAY BE PROGRAMMED.

For example,

Program switch 1 may turn the office heating on higher level at 08.00 Mon.-Fri.

Program 2 may turn the heating on lower level at 17.00 Mon.-Fri.

If someone is working late, they may press the override key " " to turn the office heating

on higher level. If they forget to press the override key " " again when they leave, the

heating will stay on higher level all night or all weekend.

To prevent this from occurring, additional program switches may be programmed.

- Program 3 can turn the heating on lower level at 18.00.

- Program 4 can turn the heating on lower level at 19.00.

- Program 5 can turn the heating on lower level at 20.00., etc.

IMPORTANT:

Before proceeding with setting the time and programming the unit, press the

“RESET” key to clear all data from the memory.

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