meitav-tec ETN24-P-3S-HU User manual

ETN24-P-3S-HU
(Cool and Heat)
Owner's Manual - Installation
and Operating Instructions
Meitav-tec Ltd (Contel group)
Tel: [phone] Fax: [phone]
www.meitavtec.com - su
pp
ort
@
meitavtec.com
ETN24-P-3S-HU
(Cool and Heat)
Owner's Manual - Installation
and Operating Instructions
Meitav-tec Ltd (Contel group)
Tel: [phone] Fax: [phone]
www.meitavtec.com - su
pp
ort
@
meitavtec.com

2
Please read this manual carefully before installation and use.
Index
Options & Accessories 1
Installation Instructions 2
Wiring Connections 3
DIP switch Configuration 4
External Sensor Connection 5
Technician Settings 6
Operating Manual 7
2
Please read this manual carefully before installation and use.
Index
Options & Accessories 1
Installation Instructions 2
Wiring Connections 3
DIP switch Configuration 4
External Sensor Connection 5
Technician Settings 6
Operating Manual 7

3
1. Options and Accessories
Remote sensor option:
•TS01: Temperature Sensor with 80cm cable.
•RS01: for remote temperature sensing (1 required); for
averaging temperature at 4 locations (4 required) – the
thermostat will control on the average temperature of all 4
locations
•RS02: for averaging temperature at 2 locations (2 required) –
the thermostat will control on the average temperature of both
locations
Humidity Duct Sensor (Purchase separately)
•GHU/DUCT: Humidity duct sensor
For details on where to purchase accessories, please contact Meitav-tec for you’re
nearest location or visit our web site at www.meitavtec.com
3
1. Options and Accessories
Remote sensor option:
•TS01: Temperature Sensor with 80cm cable.
•RS01: for remote temperature sensing (1 required); for
averaging temperature at 4 locations (4 required) – the
thermostat will control on the average temperature of all 4
locations
•RS02: for averaging temperature at 2 locations (2 required) –
the thermostat will control on the average temperature of both
locations
Humidity Duct Sensor (Purchase separately)
•GHU/DUCT: Humidity duct sensor
For details on where to purchase accessories, please contact Meitav-tec for you’re
nearest location or visit our web site at www.meitavtec.com

4
2. Installation Instructions
Separate the front panel from back panel by depressing the
tongue located in the top of the unit.
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. (Next page) Verify that you have 24Vac
between terminals C and R.
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. Wait for 15 seconds for the LCD
display to appear (completion of power circuit charging and for
self-diagnostics).
Mod
e
Fan
Cool ON
o
C
On/Of
f
4
2. Installation Instructions
Separate the front panel from back panel by depressing the
tongue located in the top of the unit.
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. (Next page) Verify that you have 24Vac
between terminals C and R.
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. Wait for 15 seconds for the LCD
display to appear (completion of power circuit charging and for
self-diagnostics).
Mod
e
Fan
Cool ON
o
C
On/Of
f

5
3. Wiring Connections
Low Medium High
External sensor (option) Humidity Sensor Cool Output 0-10Vdc Heat Output 0-10Vdc Main Input 24VAC
4. DIP switch Configuration
DIP switch S1 (3 switches) – Internal / External sensor
Internal sensor: S1.1 – On S1.2 – Off S1.3 – On
External sensor: S1.1 – On S1.2 – On S1.3 – Off
DIP switch S2 (4 switches) – Not in use
Default position: S2.1 – Off S2.2 – Off S2.3 – Off S2.4 – Off
5
3. Wiring Connections
Low Medium High
External sensor (option) Humidity Sensor Cool Output 0-10Vdc Heat Output 0-10Vdc Main Input 24VAC
4. DIP switch Configuration
DIP switch S1 (3 switches) – Internal / External sensor
Internal sensor: S1.1 – On S1.2 – Off S1.3 – On
External sensor: S1.1 – On S1.2 – On S1.3 – Off
DIP switch S2 (4 switches) – Not in use
Default position: S2.1 – Off S2.2 – Off S2.3 – Off S2.4 – Off

6
5. External sensor connection
N.TC. Sensor; Temperature ~ Resistance Characteristics
Temp °C7.2 10.0 12.8 15.6 18.3 21.1 23.9 26.7 29.4 32.2
Temp °F 45 50 55 60 65 70 75 80 85 90
Res. k 115.8 100.9 88.1 77.1 67.7 59.6 52.5 46.4 41.2 36.6
- Disconnect power to the thermostat 24Vac.
- Connect external sensor to terminals T - 0.
- Reconnect power to the thermostat.
The length of the cable for the external sensor is 30 meters with standard cable.
If longer distance is needed then the cable MUST be shielded.
6
5. External sensor connection
N.TC. Sensor; Temperature ~ Resistance Characteristics
Temp °C7.2 10.0 12.8 15.6 18.3 21.1 23.9 26.7 29.4 32.2
Temp °F 45 50 55 60 65 70 75 80 85 90
Res. k 115.8 100.9 88.1 77.1 67.7 59.6 52.5 46.4 41.2 36.6
- Disconnect power to the thermostat 24Vac.
- Connect external sensor to terminals T - 0.
- Reconnect power to the thermostat.
The length of the cable for the external sensor is 30 meters with standard cable.
If longer distance is needed then the cable MUST be shielded.

7
ON
oC
On/Off Mode Fan
OFF
Hi
Me
Lo
Cool ON
oC
On/Off Mode Fan
OFF
Hi
Me
Lo
Cool
oC
On/Off Mode Fan
oC
On/Off Mode Fan
Set Set
ON
oC
On/Off Mode Fan
Hi
Me
Lo
Cool
oC
On/Off Mode Fa n
6. Technician Settings
Set differential for valve 2°C…10°C, proportional output range 0-10Vdc or
2-10Vdc, ambient humidity (RH) indication, set point for humidity (set RH) and
differential for proportional output 4%-20% RH.
Note: If no key is pressed for 5 seconds – the thermostat will automatically return to
normal display mode.
Enter settings.
•Set temperature to 10°C.
•Press and hold the Mode button (5 seconds) to enter
settings – a number (range 2-10) will flash on the display.
Set differential for 0-10Vdc.
The temperature Differential defines the ratio between the
opening level of the valve and the temperature demand. The
valve will be fully opened when the demand (demand =
ambient temp – set temp) equals the differential.
(Differential range: 2°C…10°C)
•Press the Mode button again – a number will appear on the
display.
•Adjust the differential using the (+) or (-) buttons.
7
ON
oC
On/Off Mode Fan
OFF
Hi
Me
Lo
Cool ON
oC
On/Off Mode Fan
OFF
Hi
Me
Lo
Cool
oC
On/Off Mode Fan
oC
On/Off Mode Fan
Set Set
ON
oC
On/Off Mode Fan
Hi
Me
Lo
Cool
oC
On/Off Mode Fa n
6. Technician Settings
Set differential for valve 2°C…10°C, proportional output range 0-10Vdc or
2-10Vdc, ambient humidity (RH) indication, set point for humidity (set RH) and
differential for proportional output 4%-20% RH.
Note: If no key is pressed for 5 seconds – the thermostat will automatically return to
normal display mode.
Enter settings.
•Set temperature to 10°C.
•Press and hold the Mode button (5 seconds) to enter
settings – a number (range 2-10) will flash on the display.
Set differential for 0-10Vdc.
The temperature Differential defines the ratio between the
opening level of the valve and the temperature demand. The
valve will be fully opened when the demand (demand =
ambient temp – set temp) equals the differential.
(Differential range: 2°C…10°C)
•Press the Mode button again – a number will appear on the
display.
•Adjust the differential using the (+) or (-) buttons.

8
ON
oC
On/Off Mode Fan
OFF
Hi
Me