Meitav-tec ETN24 User manual

Installation

General points to follow:

- Disconnect power to the main board before installing the unit.

- The unit should not be installed on an outside wall or where there is an air draft.

- The unit must not be exposed to a direct sunlight.

- The standard height to install this unit is 1.5 meter (5 feet) from the floor.

Installation procedure:

Separate the front panel from back panel by pressing the tongue located in the top of the unit and pull the

back panel out.

Line the back panel up against the wall or flat surface. Install three screws as required.

Make electrical connections as shown on enclosed electrical wiring diagram.

Install the cover to the back panel; first the two tabs on the bottom and then the top tongue.

Push until tight against the wall.

The ETN24 is designed for wall mounting in the room to be controlled. It

should be located where the occupant can easily read the LCD display and

use the controls. If the built in temperature sensor is being used to measure

room temperature, the module should be placed where the temperature is

representative of the general room conditions. Cold or warm air draughts;

radiant heat and direct sunlight should be avoided.

SelectOn/Off Prog

ºF

Cool

Heat

Program:Wake

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ETN24-SUPER-FP-PROG-F

Owner’s manual & Technnician Settings

Before connecting or disconnecting any wires, ensure that all power supplies have been switched off and

all wires are potential-free to prevent equipment damage and avoid electrical shock.

Do not run wiring close to transformers or high frequency generating equipment. Complete and verify all

wiring connections before applying power to the controller to which the module is connected.

Wiring

Notes:

For a heat pump system with no heat elements, leave terminals “W1” and “W2” free.

For a heat pump system with one heat element, leave terminal “W2” free.

For system with one compressor, leave terminal “Y2” free.

RC-RH, - When using one transformer, RC,RH terminals must be shorted.

RCRHC

B/O

W2TTGY1

Fan (0.5A)

Heat element 2 (0.5A)

Heat element 1 (0.5A)

External sensor (option)

Main supply 24VAC

External sensor Connection (option)

Important: The external sensor must be Meitav-tec type only!

Res. KΩ115.8 100.9 88.1 77.1 67.7 59.6 52.5 46.4 41.2 36.6

Connecting the external sensor

Disconnect power to the thermostat.

Move switch 5 to ON position and switches 1 and 6 to OFF position.

Connect the temperature sensor to the T-T terminals.

Reconnect power to the thermostat.

Notes:

The wire length for the external sensor can be up to 100 feet (30 meters) with standard cable.

If the distance is greater than 100 feet the wire MUST be shielded.

The external sensor must be Meitav-tec type.

There is a wide range of sensors for different applications, duct, rooms, etc. There are also options for

averaging the temperature. For details please contact our technical line or visit our web site.

123456

Temp °F 45 50 55 60 65 70 75 80 85 90

Tel: (856) 2882882

Tel: +972-3-9626462

Fax: +972-3-9626620

support@meitavtec.com

ETN24-SUPER-FP-PROG-F

Owner’s manual & Technnician Settings

RCRHC

B/O

W2TTGY1

Compressor 1 (0.5A)

Fan (0.5A)

Heat element (0.5A)

Heat pump (0.5A)

External sensor (option)

Main supply 24VAC

System without heat pump

(heat elements only) System with heat pump

Y2 Y2

Compressor 2 (0.5A)

Compressor 1 (0.5A)

Compressor 2 (0.5A)

Freeze Protection

When the temperature drops below the freeze protection cut-

in temperature*, the thermostat will turn on the Heat and Fan

outputs in order to protect the system from freezing.

This function will be activated when the thermostat is either in

On or Off position.

The display will alternate between "AL" and the room

temperature.

The thermostat will return to normal mode when the

temperature rises above the freeze protection cut-off

temperature*.

*adjustable – please refer to the technician settings section of

the operating manual.

Cut-in

Cut-off

Temperature

Time

Normal work Freeze protection

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ETN24-SUPER-FP-PROG-F

Owner’s manual & Technnician Settings

DIP switch settings

Internal/External sensor

Use DIP Switches S1, S5 and S6 to select Internal/External sensor

Internal sensor.……………………….. S1, S6 – ON S5 – OFF

External sensor………………..………S1, S6 – OFF S5 – ON

123456

Internal

sensor

External

sensor

123456

Heat pump or non heat pump (heat elements only) system

Use DIP Switch S2 to select heat pump or non heat pump system

Heat pump system…………………….S2 – ON

Non heat pump system………..……… S2 – OFF

123456

Heat pump

system

Non heat

pump system

123456

Compressor time delay

Use DIP Switches S4 to enable/disable the 3 minutes

compressor time delay as follows:

3 Minutes delay………………………..S4 – OFF

No delay………………………………..S4 – ON

Heater type – electric or oil/gas (for non heat pump systems)

Use DIP Switch S3 to select heater type

Oil/Gas heaters………………….…….S3 – ON

Electric heaters………………...……...S3 – OFF

123456

Oil/Gas

heaters

Electric

heaters

123456

Heat pump configuration (for heat pump systems)

Use DIP Switch S3 to select heat pump configuration

Heat pump energized in heat.…….....S3 – ON

Heat pump energized in cool.……..... S3 – OFF

123456

Heat pump

energized in

heat

Heat pump

energized in

cool

123456

compressor

delay

3 Minutes

compressor

delay

123456

Operating instructions

On/Off

Press the [On/Off] button to turn the thermostat ON.

Press and hold the [On/Off] button (4 sec.) to turn the thermostat OFF.

Set point

SelectOn/Off Prog

ºF

Cool

Heat

Program:Wake

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ETN24-SUPER-FP-PROG-F

Owner’s manual & Technnician Settings

In Cool mode:

Press the [+] or [-] buttons - "COOL" will appear on display and the

set-point temperature for cooling will flash.

Adjust the set-point temperature for cooling using the [+] or [-] buttons.

Press the [Select] button or wait to return to normal display.

In Heat mode:

Press the [+] or [-] buttons - "Heat" will appear on display and the set-

point temperature for heating will flash.

Adjust the set-point temperature for heating using the [+] or [-] buttons.

Press the [Select] button or wait to return to normal display.

In Fan mode or in auto change-over mode (2 set-points):

Press the [+] or [-] buttons - "COOL" will appear on display and the

set-point temperature for cooling will flash.

Adjust the set-point temperature for cooling using the [+] or [-] buttons.

Press the [Select] button or wait 3 seconds - "HEAT" will appear on

display and the set-point temperature for heating will flash.

Adjust the set-point temperature for heating using the [+] or [-] buttons.

Wait until display returns to normal.

Note: the cooling set point temperature must be higher than the heating

set point temperature

Cool

Heat

°F

Cool

°F

Heat

°F

Lock Buttons

Use the Lock option to prevent users from making unwanted changes.

When the thermostat is locked, the [Select], [+] and [-] buttons are disabled,

however, the users can turn the thermostat ON or OFF. The display will alternate

between "Loc" and real time clock.

Make sure both temperature set points are different than 50°F.

Lock the thermostat - Press and hold the [Select] button (20 seconds) until "Loc"

appears on display.

Unlock the thermostat - Press and hold the [Select] button again (20 seconds)

until "UnLo" appears on display.

LockedUnlocked

Operating instructions (Cont’)

Tel: (856) 2882882

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support@meitavtec.com

ETN24-SUPER-FP-PROG-F

Owner’s manual & Technnician Settings

Press the [Select] button once to enter Modes selection:

Use the [+] and [-] buttons to switch between modes:

“Cool”…………………Cooling

“Heat”…………………Heating

“Cool” & “Heat”………*Auto mode

“Fan”…………………. Fan only

Press the [Select] button again to enter Auto fan

selection:

Use the [+] and [-] buttons to switch between:

“Fan”…………….…… Fan is on continuously

“Auto Fan”……………*Fan cycles on with demand

*Auto Fan is not available in "Fan only" mode.

* In Heat mode, with Oil/Gas heat configuration (i.e.,

furnace):

Auto Fan – The fan will never be activated.

Fan – The Fan will work continuously.

Press the [Select] button again to return to normal display

Note: The Auto mode can be disabled by technician – please

refer to technician settings section in this manual.

Modes / Auto fan

Cool Heat Auto mode Fan only

Always ON On with

demand

Cool

Heat

Cool

Heat

Fan

Auto

Fan

Weekly Program

The thermostat can be programmed with up to 12 different programs: 4 different programs for the weekdays

(Monday to Friday); 4 different programs for Saturday and 4 different programs for Sunday. The daily

programs are named: Wake, Day, Return and Sleep.

Programming defaults 1 (Wake) 2 (Day) 3 (Return) 4 (Sleep)

Monday to Friday Start time: 6:30 AM 8:00 AM 5:30 PM 10:00 PM

Cool Set Point / Heat Set Point: 78°F/70°F 85°F/62°F 78°F/70°F 82°F/62°F

Saturday Start time: 7:30 AM 12:30 PM 6:00 PM 11:30 PM

Cool Set Point / Heat Set Point: 76°F/70°F 74°F/70°F 72°F/70°F 78°F/65°F

Sunday Start time: 7:30 AM 12:30 PM 6:00 PM 11:30 PM

Cool Set Point / Heat Set Point: 76°F/70°F 74°F/70°F 72°F/70°F 78°F/65°F

Enable/Disable/Override the weekly program

Press & Hold the [Prog] button (10 sec.) to enable/disable the program. When the word “Program” appears

on display, the weekly program is enabled and can be modified. When the word “Program” does not

appear on display, the weekly program is disabled and cannot be modified.

The occupant can temporarily change the set point temperature to be different than the set point

temperature specified by the program. Changes will be affective until the next program event begins.

To exit programming mode, press the [Select] button until normal display is reached or wait 30 seconds.

Prog Hours Prog Minutes Prog Day

Start

time

Hours

Start

time

Minutes

Set

Point

cool

Set

Point

heat

Prog Prog Prog

Real time clock

Wake

Prog

Repeat for

Weekdays

“Day”, “Return” &

“Sleep”

SleepReturnDay

Weekdays program

Start

time

Hours

Start

time

Minutes

Set

Point

cool

Set

Point

heat

Prog Prog Prog

Wake

Prog

Repeat for

Saturday

“Day”, “Return” &

“Sleep”

SleepReturnDay

Saturday program

Start

time

Hours

Start

time

Minutes

Set

Point

cool

Set

Point

heat

Prog Prog Prog

Wake

Prog

Repeat for

Sunday

“Day”, “Return” &

“Sleep”

SleepReturnDay

Sunday program

Tel: (856) 2882882

Tel: +972-3-9626462

Fax: +972-3-9626620

support@meitavtec.com

ETN24-SUPER-FP-PROG-F

Owner’s manual & Technnician Settings

Tel: (856) 2882882

Tel: +972-3-9626462

Fax: +972-3-9626620

support@meitavtec.com

ETN24-SUPER-FP-PROG-F

Owner’s manual & Technnician Settings

Technician Settings

Enter technician settings mode

Adjust the set point temperature to 50°F

Press and hold the [Select] button for 5 seconds to enter technician settings mode.

Temperature limit for cooling

“Cool” will flash.

Use the [+] and [-] buttons to adjust the temperature limit for cooling.

Range: 41...90°F, Default 41°F.

Temperature limit for heating

Press the [Select] button again – “heat” will flash.

Use the [+] and [-] buttons to adjust the temperature limit for heating.

Range: 41...90°F, Default 90°F.

Offset for calibration of measured temperature

Press the [Select] button again – the offset will appear on display.

Use the [+] and [-] buttons to adjust the offset.

Range: -6…+6°F, Default 0°F.

Enter tech.

settings

ºF

Set

Set point

limit cool

Set point

limit heat

Disable/Enable Auto change over mode

Press the [Select] button again – “AO” or “AF” will appear on display.

Use the [+] and [-] buttons to select between:

“AO”……………..With Auto change over mode.

“AF”……………..Without Auto change over mode Without

Auto mode

With

Auto mode

Calibration

Offset

Freeze protection cut-in temperature

Press the [Select] button again – “FPOn” will appear on display.

Use the [+] and [-] buttons to adjust the freeze protection cut-in temperature.

Range: 41…65°F, Default 45°F.

Note: For more information about the freeze protection functionallity, please refer to the

“Freeze protection” section in this manual. Cut-in

temperature

Cut-off

temperature

Freeze protection cut-off temperature

Press the [Select] button again – “FPOf” will appear on display.

Use the [+] and [-] buttons to adjust the freeze protection cut-in temperature.

Range: 43…67°F, Default 47°F.

Press the [Select] button again to return to normal display.

Tel: (856) 2882882

Tel: +972-3-9626462

Fax: +972-3-9626620

support@meitavtec.com

www.meitavtec.com

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