Pentair NRG-Temp Operation Manual

NRG-Temp

THERMAL MANAGEMENT SOLUTIONS

ML-NRGTemp-IM-INST314 R3

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For instructions in other languages, go to : www.pentairthermal.com

70.5

ENGLISH

1 2 3

Technical specification 8 Description 9 Mounting and installation 10

Program selection 13 Operation Comfort Mode (Co) 17

5.1 Getting started 17

5.2 Optional functions 19

5.2.1 Heat Booster 19

5.2.2 External set back) 19

5.2.3 Lock function) 20

5.3 Optional functions 20

5.3.1 Menu 1: Temperature viewing 20

5.3.2 Menu 2: Temperature calibration 20

5.3.3 Menu 3: Delayed start-up 20

5.3.4 Menu 4:

Display backlight duration

5.3.5 Menu 5: "First warming" function 23

5.3.6 Menu 6: Heating running time 23

5.3.7 Menu 7: Adjustable switching

hysteresis 25

Operation EcoHome or EcoOffice Mode 25

6.1 Getting started 25

6.2 Optional functions 29

6.2.1 Boost function 29

6.2.2 Lock function 29

6.2.3 Configuration menu 29

6.3 Installer's menu 30

Menu 1: Sensor mode 30 Menu 2: Service read out 31

Menu 3: Calibration of the

temperature set value 31

Menu 4: Display backlight on duration 33

Menu 5-6: Min-max setting for room sensor

Menu 7-8: Min-max setting for floor sensor

Menu 9: Adaptive function ON/OFF 35

Menu A: "First warming" function

Menu B: Running time 35 Menu C: Adjustable switching

hysteresis 35

Operation in Standby mode 35

Trouble shooting 36

8.1 Error Codes 36

8.2 Monitoring of the temperature sensor 36

Factory settings 37

1. TECHNICAL SPECIFICATIONS

Supply voltage 230VAC, +10%,

Power consumption, average 4 VA Main power switch 2-pole Relay output - heating cable 230V, max. 13A Ambient temperature – operation 0 +40°C Ambient temperature – transport –20 +50°C Temperature range, floor sensor +5 +35°C Temperature range, room

sensor Accuracy – floor/room sensor ± 0,5°C Switching hysteresis 0,5°C (Factory settings

Control modes Floor sensor

Economy programs EcoHome; EcoOffice

Back-up for set values In non-volatile memory Back-up for time and date 24 hours Optional external control Set back function

Protection class IP 21 Terminals Max. 2,5 mm Floor sensor with 3 m cable NTC, 10K / 25°C. Maximum length of floor sensor

cable Dimension with frame (Fig.1) H 82 x W 82 x D 57 mm Colour Polar white RAL 9010 Approvals Semko, VDE, eu.bac, CE

–15%, 50/60 Hz

+5 +40°C

adjustable between 0,2-2.0°C)

Room sensor Room sensor with floor

sensor as a limiter (Not in Comfort mode

2 preset-programs; editable in time blocks of 30 min

–3.5°C (Not in programs EcoHome and EcoOffice)

100 m, 2 x 1,5 mm

(230VAC cable type)

)

2. DESCRIPTION

NRG-Temp is a smart thermostat for underfloor heating. NRG-Temp provides the following features and functions:

• Heating system control by means of an external floor sensor or integrated room sensor.

• Load capacity of the output relay, 13A/230V (3000W)

• 2-pole main power switch

• Display with blue backlight

• System "Boost" function

The set temperature can be increased for 2 hours reverting automatically to the original temperature setting.

• Keypad lock function.

• Fail safe mode in the event of a system error/

fault.

• Enclosure protection class IP21

• Floor sensor cable. Length - 3 metres.

• "First warming" function for gradual warming of

new screed.

• Summer mode (Heating Off)

• External set back in Comfort mode 

Extra terminal which can be used as an external closing contact to reduce the set temperature by 3,5°C

• Delayed Start-Up in Comfort mode 

• Economy programs (EcoHome, EcoOffice)

2 different standard efficiency programs for specific room types which can be edited manually

• Adaptive function (EcoHome, EcoOffice) The adaptive function automatically changes the start time of the heating system so the desired temperature is reached at the required time.



• The thermostat is supplied with an assembly frame and a front plate for the ELJO Trend / B&J Jussi / Merten (Plan, Smart, Arc, Atelier, M1, Antik, Termo, M-Star) / Jung (AS) / Gira (ST55 Standard, E2) wall box system. An extra front plate for the square sized frames such as ELKO RS is also included

• Approved by SEMKO, VDE, eu.bac, CE

3. MOUNTING AND INSTALLATION

Thermostat

NRG-Temp is intended for flush mounting in a standard 65 mm wallbox. It should be positioned approximately 1.5 metres above the floor, protected from direct sunlight and draughts. All electrical conduits passing into the thermostat box that contain cables must also be sealed to protect the thermostat against draughts, e.g. with a piece of insulation in the conduit outlet. NRG-Temp can also be mounted in an external wall box. If the thermostat will be mounted on a rough wall surface, e.g. bricks, use silicon glue to make a seal with the top frame. Assembly frame and front of thermostat can be removed by pushing with a screw driver on the two fasteners located on the sides of the thermostat. (Fig. 2)

Floor sensor

The floor sensor should be installed in a separate flexible conduit/hose for easy replacement. For best control performance, position the floor sensor between two heating cables as close as possible to the top floor surface. Do not position the floor sensor tip closer than 3 cm to the heating cable. The floor sensor cable can be extended to 100 m with a separate standard installation cable 2 x 1.5 mm (230VAC). In order to avoid signal disturbance resulting in a possible malfunctioning of the thermostat, the sensor should not be installed in a conduit together with other cables.

Connection of the thermostat

The thermostat must be connected to 230VAC according to the circuit diagrams. When using multiple heating cables, totalling over 13A, a contactor with integrated suppression device must be used. If the protective earth terminal, PE, on the thermostat is used, the incoming power cable to the heating cable should be connected to the common earth terminal on the thermostat, otherwise a separate terminal connection block (not included ) must be used.

Product specific information for use with floorheating systems

• Use with T2QuickNet:

T2QuickNet is approved with the thermostat working in floor sensor mode. Be aware that the floor sensor must be installed and activated for an installation with T2QuickNet.

• Use with T2Red (T2Reflecta) self-regulating systems:

Self-regulating heating cables have an inrush current at start up. In order to guarantee the life time of the thermostat, the maximum load of the self-regulating application in nominal conditions is limited to 10A. A 13A self-regulating load will reduce the life time of the relay contacts.

Direct, connection – e.g. single heating circuit

Heating cable

230 VAC Max.13A

Pilot wire

signal

(France)

Floor

sensor

NTC

10K

Power supply

230 VAC

SENSOR

HEAT

Connection via contactor – e.g. 3 heating circuits

Pilot wire

signal

(France)

Floor

sensor

NTC

10K

Power supply

230 VAC

Power supply to

heating cables

L1 L2 L3 N PE

1 3 5

2 4 6

L L L

N N N

SENSOR

HEAT

Do not use contactor without interference filter.

K1: contacter

with integrated

suppression

device

4. PROGRAM SELECTION

Thermostat controls

A: main power switch B: OK/confirm button C: “–“ decrease D: “+” increase E: “>” move right F: “<” move left

First start – set the thermostat in operation:

Push in the main < > power switch, located on the upper part of the thermostat.

The display lights, and the Comfort mode symbol   begins to flash to select the desired program mode.

Program

selection

Comfort

temperature adjustment

EcoHome

temperature and time/date adjustment

EcoOffice

temperature and time/date adjustment

Standby

•

0h • 3

•

0h • 3

Display

• • 6 • • 9 • •

See

page

• •

Program

selection

Scroll through

differrent

programs with

buttons

Press

button to

confirm selected program

•

0h • 3

• • 6 • • 9 • •

I I

• •

Function Symbols Comfort

Set time and date Select program Comfort

Booster (+5°C for 2 hours)

• Set desired

comfort temperature

• Continuous

operation in comfort mode (override automatic program)

Select “Auto” to run selected user program.

• Set reduced

(Set-back) temperature or is shown at external program

• Continuous

operation in reduced mode (override automatic program)

–

= Co

✔ ✔

–

EcoHome EcoOffice

✔ ✔

EcoHome:

EcoH

EcoOffice:

EcoO

✔

Standby

Standby:

OFF

–

•

0h • 3

• • 6 • • 9 • •

1 I I 7

• •

Read-out Symbols

Time, temperature or error code

Day or menu number

Heating cable on Calibration mode Error

Keypad locked Temporarily

override the

Comfort

✔ ✔

–

EcoHome EcoOffice

✔

tempe-rature in Auto mode

Graphical indication of

–

✔

selected program

Sensor mode

i. Floor sensor ii. Room sensor iii. Room sensor

with floor tempe-

✔ ✔ ✔

–

✔

rature limiter

Note: The function being set is indicated by a square

symbol around the function symbol. Example: If the square is shown around the clock symbol, the time and date function may be amended.

Standby

–

– – –

– –

–

5. OPERATION COMFORT MODE [ ]

5.1 Getting started

Note: the square moves over the different symbols

when programming. The symbol in the square indicates the active function: manual mode, automatic mode by external signal, booster function. The display illuminates and shows all features. Then it shows the setting temperature and sensor mode. The sensor mode is initialised automatically. If the floor sensor cable is connected, it operates in floor sensor mode. If the floor sensor cable is not connected, it operates in room sensor mode. After 5 sec. the thermostat checks if an external control signal is connected. If yes, the thermostat will be controlled according to the set temperature and external signal. The symbol AUTO is activated. If not, the thermostat will be controlled according to the set temperature. Adjust the set temperature, desired floor temperature or room temperature, with the < This is an approximate set value to get a comfort temperature on the floor or in the room. Heating-on symbol < the heating cable is on.

Choose another program

• Use the < menu and activate P.

• The display switches to this view: ; P is flashing.

• Confirm by pushing OK button to go in program selection; Co is flashing.

• Select program EcoHome, EcoOffice or Standby mode by

• using <

> indicates on the display when

> buttons to scroll through the

> buttons and confirm by pressing

> buttons.

Learning Function

This function starts only if the thermostat has no floor sensor connected, (‘Er3’ indicated briefly at start-up) only in ambient sensing mode configuration. At the first thermostat power-up (or after a factory reset), the thermostat begins its own regulation parameter calibration. During this learning time, the user doesn’t have access to ambient temperature:

Instead of temperature, a count down timer

from 2.1 hours to 0.1 hour (0.1 hour = 6 minutes) is displayed.

The learning time is divided into two steps:

1. Time < 30min (0.5 hour) [ from 2.1h to 1.6h]:

the first half hour, the user is allowed to change the set temperature and activate the floor warming system. This period can be used by the installer to check the floor warming system installation. The set temperature can be adjusted by using <

2. 30min < Time < 2hours [from1.6h to 0.1h]:

The thermostat doesn’t take into account the set temperature. But during this period, the thermostat can power on and off the floor warming system to adjust its regulation parameters.

If there is a main power supply loss during this learning period (main switch off or power supply failure), the thermostat will restart the learning function. At the end of this learning function, the thermostat is automatically calibrated (adapted to the load linked to the thermostat):

> keys.

This function will run at every factory reset of the thermostat, if no floor sensor is attached.

5.2. Optional functions

5.2.1 Activating Heat booster <

This function is used for temporary increase of the floor/room temperature by 5°C. Push the confirmation button < current set temperature will increase by 5°C for 2 hours and this increased temperature is shown on the display. This automatically reverts to the set temperature after 2 hours or if the confirmation button is pushed again for 3 sec. within the 2 hour period.

If external control is connected:

confirmation button < thermostat will now be in Manual mode. Push again the confirmation button < for 3 sec. The thermostat will go in “booster” mode and the current set temperature will increase by 5°C for 2 hours. This increased temperature is shown on the display. Automatic reverts to the set temperature after 2 hours or if the confirmation button < pushed again for 3 sec. within the 2 hour period.

> for 3 sec. The

Push the

5.2.2 External set back

To utilise the set-back function and reduce the current set point by 3.5°C: Connect a closing contact between the FP terminal and phase terminal e.g. a closing timer switch. When the contact is closed, the symbol "P" is displayed in the lower right corner, indicating activation.

To enable manual control mode: Push the confirmation button for 3 seconds. Normal set temperature control is active. Push again the confirmation button < 3 seconds to change the Manual mode to Booster mode. Push the confirmation button < seconds to revert to AUTO mode.

> in

> is

> again 3

5.2.3 Lock

Lock and unlock the thermostat

It is possible to lock all the parameters of the thermostat. (e.g. public buildings) Lock: Press and hold all buttons simultaneously. Unlock: Press and hold all buttons simultaneously.

5.3 Installer's menu

Push and hold < > button for 6 seconds to enter following Menu:

5.3.1 Menu 1: Temperature viewing

• Room sensing mode: Room temperature viewing (temperature measured inside the thermostat)

• Floor sensing mode: Temperature inside the cement slab

To check the actual measured temperature, push the

This value can be used to calibrate the floor surface temperature value to the set temperature value on the display. Push confirmation button several times (scroll through Menu structure) to return to Normal mode

confirmation button for 6 sec.

In menu number 1 the measured temperature value is indicated on the display: in-floor temperature in case of floor sensing mode <

5.3.2 Menu 2: Temperature calibration

Calibration of the temperature set value

If the desired temperature is not reached or if there is a difference between real floor/ room temperature and the set value on the display, calibrate

After stable temperature in floor: The set temperature value can be calibrated against the real floor / room temperature. This needs to be done using a separate

the thermostat.

thermometer for determining the actual floor or room temperature. The thermometer should be put on the floor surface, sensing the floor surface temperature, or on the wall sensing the air temperature.

Calibration of room sensor mode < >:

In room sensor mode the internal sensor value is the same as for the set value on the display. Push the confirmation button < enter the Configuration mode. Push the confirmation button < number 2. Change the temperature value via < buttons to the same value shown on the reference wall thermometer. Push confirmation button several times (scroll through Menu structure) to return to Normal mode

• Room sensor: Room temperature flashing and possibility to adjust the room temperature with <

> keys.

> in 6 sec. to

> to enter menu

Initial value to calibrate

Calibration of floor sensor mode < >:

In floor sensor mode there is a default offset value of +4°C between the infloor sensor value and the floorsurface value (which is the set value on the display). The read-out value in Menu 1 can be used for set value calibration. Push the confirmation button < enter the Configuration mode. Push again the confirmation button < menu number 2. Change the offset value via < > buttons so that the set temperature value will be approx. the same value shown

on the reference floor surface thermometer.

> in 6 sec. to

> to enter

• Floor sensor: the user can adjust the difference between the temperature inside the floor and the room temperature.

Offset = Floor temperature – Room temperature

menu1

surface

New offset = T

menu 1

- T

surface

Example: Use the floor sensor temperature value from menu 1. If this value is 27°C and the floor surface thermometer shows 24°C, the new offset value will be 27-24 = 3. Change the offset from 4°C to 3°C. Push confirmation button several times (scroll through Menu structure) to return to Normal mode

5.3.3 Menu 3: Delayed Start-Up

The user can choose the time before powering up the floor warming system. Possible values: from 0 [OFF] to 15 minutes [15 ’]. A "t" is shown on in the display when the delayed start-up is switched on.

5.3.4 Menu 4: Display backlight "on" duration

Setting of the display backlight. Change the time with < Confirm with <

from 0 [OFF] to 120 seconds [120’’] Factory value: 30s

>. Possible values:

> buttons.

5.3.5 Menu 5: "First warming" function

This function can be used for gradual warming of new screed. Possible values: [OFF] or [ON]

This function does not apply by default (Installer menu number 4: OFF by default, factory value = OFF). Progressive warming cement slab during 21 days period, but limited to 20°C.

Working description:

When the thermostat comes back to the normal mode, the user sees instead of the temperature, the remaining number of days of the progressive warming (total duration: 21 days).

During this time, the thermostat warming cycle is equal to 24 minutes (60 cycles per day).

To activate this option the user enters the installer menu number 4 and selects the configuration (‘on’ or ‘off’) then presses ok.

Function remains active for 21 days.

The first day, the thermostat powers the floor heating system during 1 minute on each 24 min cycle (= 1h of

warming the first day). The second day, the thermostat powers the floor heating system during 2 minutes on each 24 min cycle (= 2h of warming the second day).

Function remains active for 1 day.

Before the last day, the thermostat powers the floor heating system during 19 minute on each 24 min cycle (= 19h of warming the first day). The last day, the thermostat powers the floor heating system during 20 minute on each 24 min cycle (= 20h of warming the first day).

If the thermostat regulation works with the floor sensor only, the

cement slab temperature will be

limited to 20°C.

If the thermostat regulation works with the room sensor only, the ambient temperature will be

limited to 20°C.

In both cases of power supply failure or main switch put on ‘Off’ position by the user during this function progress, the thermostat will resume from where it stopped ("First warming" function time saved in memory).

At the end of this "First warming" function, the learning function begins if room sensor mode is activated.

This function can be stopped at any

time by setting the installer menu number 4 to ‘OFF’

5.3.6 Menu 6: Heating Running Time

Running time (the time in the course of which the floor warming system is powered)

3’ : 3 minutes 7d : 7 days [1..30]

The sensor mode is detected and initialised automatically. If the floor sensor cable is connected, it operates in floor sensor mode. To reset this time the user has to press < simultaneously for more than 3 seconds.

[0..59] 5h : 5 hours [1..23]

5.3.7 Menu 7: Adjustable switching hysteresis

The switching hysteresis can be adjusted to extended On/Off cycles: Adjustable: from 0.2 - 2.0°C Factory setting. 0.5°C

6. OPERATION ECOHOME OR ECOOFFICE MODE

6.1 Getting started

Note: The function being set is indicated by a square

symbol around the function symbol. Example: If the square is shown around the clock symbol, the time and date function may be amended. The sensor mode is detected and initialised automatically. If the floor sensor cable is connected, it operates in floor sensor mode. To change the sensing mode to room sensing with floor sensor limiter, see paragraph 4.2.4. Menu 1. If the floor sensor is not connected, the NRG-Temp operates in room sensing mode. To program the thermostat follow the steps A, B, C and D below. The program EcoHome and EcoOffice can be selected as described on page 12 program selection.

A. Set the time and day < >

“time flashes” Set minutes with < > button.

Press <

“hour flashes” Set hour with <

Press <

“day flashes” Set day with <

Press < Day 1 is Monday/ Day 7 is Sunday.

Thermostat starts operating in pre-set program EcoHome or EcoOffice.

Learning function: see page 16.

> to confirm .

> button.

> to confirm.

> button.

> to confirm.

B. Edit the timer program < > (EcoHome, EcoOffice)

Programs overview (Comfort, EcoHome, EcoOffice, Standby) of the pre-programs annex A page 38

Editable Program EcoHome, EcoOffice

Edit e.g.

Program

EcoHome

Program

day 1

Use the < to scroll through the menu till P symbol is active and confirm by pressing < EcoHome appears flashing on the display; Press and hold < for 3 seconds to start programming EcoHome.

Select the desired time with the <

Press < Select <

arrows and press < Go to next time block with

< Press < Select <

with arrows and press

< Go to next time block with

< Press <

Repeat till day 1 is completely programmed meaning from 00:00 until

24.00 h Press <

> buttons

> buttons.

> or < > with

> button

> or < >

> button

Editable Program EcoHome, EcoOffice

Program

day 2

Program

remaining

days

End pro-

gram ming

EcoHome

e.g.

Edit

program

EcoHome

e.g.

If day 2 is different from the previous day, repeat the steps as described in “program day 1”(see above)

If day 2 is a copy of the previous day, simply press

< Program a specific day

by repeating the steps as described in “program day 1” (see above)

Make a copy of the previous day simply by pressing <

Press and hold < for 3 seconds

Press < desired day for editing

Press and hold < for 3 seconds

Edit with < buttons to set the desired time and select <

> with cursors

< Press and hold <

for 3 seconds to end programming

To “Run” the selected program, choose <AUTO> mode from the selection. See point D overleaf. Note: < temperature mode, the <

> means operation in comfort

> means operation in reduced temperature mode. These desired temperatures can be set as described in point C.

> to select the

> and

C. Set the desired comfort temperature and reduced temperature

Set comfort temperature

Set reduced temperature

Adjust the set temperature value (desired floor or room temperature) with the < by pressing <

Press < value instead of the temperature set value.

Return to AUTO mode where the thermostat will then operate according to the selected program.

Adjust the set temperature value (desired floor or room temperature) with the < by pressing <

Press < value instead of the temperature set value.

Return to AUTO mode where the thermostat will then operate according to the selected program.

> buttons. Confirm

> again to show the clock

> buttons. Confirm

> again to show the clock

D. Select thermostat mode for normal operation < , , >

Use the < > buttons to scroll through the menu:

Timer program mode

Operation of the selected timer program (see above) with comfort temperature ( reduced temperature ( override of the temperature in the selected program, adjust the temperature value (desired floor or room temperature) with the <

buttons. Confirm by pressing <

override will operate until the next programmed event when the unit will then resume the automatic program. Press < change the view from the clock value to the temperature view.

). For temporary

) and

>. The

> again to

Comfort mode Manual continuous operation of the

Reduced mode

comfort temperature (no program active) Manual continuous operation of the

reduced temperature (no program active) e.g. holiday period.

6.2. Optional functions

6.2.1 Activating boost function

< >

This function is used for temporarily increasing the floor or room temperature by 5°C.

Activate booster

Terminate booster mode

Use < Press OK to activate. Leave unit, as boost function ends

automatically after 2 hours Or exit <

mode by using <

> to select the < >

> mode and go to another

6.2.2 Lock

Lock and unlock the thermostat

It is possible to lock all the parameters of the thermostat. (e.g. public buildings) Lock: Press and hold all buttons simultaneously. Unlock: Press and hold all buttons simultaneously.

6.2.3. Configuration menu

Normal Menu:

In both floor and room sensing mode, the temperature seen on the thermostat corresponds to the set

temperature. Viewing rules in each regulation mode (Comfort, Auto, Reduce and OFF-mode)

By default the view configuration is the set temperature view. Pressing the < temperature value for a duration of 3 seconds. Pressing < to setting change.

> button changes the view to actual

> again or left keys changes the view

Pressing < > key for 1s switches the view mode from temperature view to time view.

Exceptions :

• During "First warming" function, the temperature

view is replaced by "First warming" elapse time counter view.

• During learning function, the temperature view is

replaced by setting temperature value. Pressing

> allows the user to view the elapsed learning

< period for a duration of 3 seconds.

6.3. Installers's menu

Changing various standard settings of the thermostat.

To enter following menus push and hold the

> button for 6 sec. Use the < > button

< to step through the menu’s.

Menu 1: Sensor mode

Menu 1: Sensor regulation choice

If an external sensor is attached, the user is allowed to choose between 2 regulation modes :

1. Floor sensor only 2. Room with floor limitation

To change the operating mode to room sensing with floor sensor as limiter, press the until < If the floor sensor is not detected, it operates in room sensing mode <

The sensor mode is detected and initialised automatically. If the floor sensor cable is connected, it operates in floor sensor mode <

If no external sensor is attached the thermostat works with room sensor only and the user may not change it.

> is displayed.

< >

Confirm by pressing < >.

buttons

+ 378 hidden pages

Pentair NRG-Temp Operation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual