Pentair NRG-Temp User manual

NRG-Temp
ML-NRGTemp-IM-INST314 R3
THERMAL MANAGEMENT SOLUTIONS

English: Digital Timer Thermostat 6
Operation and user manual
Deutsch:
Digitaler Thermostat mit Zeitschaltuhr 41
Installation und Betrieb
Français: Thermostat à horloge numérique 79
Guide d’installation et d’utilisation
Nederlands:
Thermostaat met digitale timer 115
Operation and user manual
Norsk: Termostat med digitaltimer 152
Installasjon og anvendelse
Svenska: Digital timertermostat 187
Installation och användning
Dansk: Digital timertermostat 223
Installation og betjening
Suomi: Digitaalinen ajastintermostaatti 259
lattialämmitykselle
Operation and user manual
Polski: Termostat z timerem cyfrowym 294
Instrukcja montażu i obsługi termostatu
Русский: Цифровое термореле с таймером 330
Инструкция по монтажу и эксплуатации
Română Cronotermostat digital 370
Manual de utilizare
For instructions in other languages,
go to : www.pentairthermal.com

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70.5
70.5
1
2

6
1Technical specification 8
2Description 9
3Mounting and installation 10
4Program selection 13
5
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 23
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
6
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
ENGLISH

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6
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 33
Menu 7-8: Min-max setting
for floor sensor 34
Menu 9: Adaptive function ON/OFF 35
Menu A: "First warming" function 35
Menu B: Running time 35
Menu C: Adjustable switching
hysteresis 35
7Operation in Standby mode 35
8
Trouble shooting 36
8.1 Error Codes 36
8.2 Monitoring of the temperature
sensor 36
9Factory settings 37

8
1. TECHNICAL SPECIFICATIONS
Supply voltage 230VAC, +10%,
–15%, 50/60 Hz
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
+5 +40°C
Accuracy – floor/room sensor ± 0,5°C
Switching hysteresis 0,5°C (Factory settings
adjustable between
0,2-2.0°C)
Control modes Floor sensor
Room sensor
Room sensor with floor
sensor as a limiter
(Not in Comfort mode )
Economy programs
EcoHome; EcoOffice
2 preset-programs;
editable in time blocks of
30 min
Back-up for set values In non-volatile memory
Back-up for time and date 24 hours
Optional external control Set back function
–3.5°C (Not in programs
EcoHome and EcoOffice)
Protection class IP 21
Terminals Max. 2,5 mm2
Floor sensor with 3 m cable NTC, 10K / 25°C.
Maximum length of floor sensor
cable
100 m, 2 x 1,5 mm2
(230VAC cable type)
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

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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.

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• 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 mm2
(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.

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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.

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Direct, connection – e.g. single heating circuit
Connection via contactor – e.g. 3 heating circuits
Pilot wire
signal
(France)
Power supply
230 VAC
Floor
sensor
HEAT
L
N
10K
NTC
PE
SENSOR
NL
NL
LNPE
PE
FP
Heating cable
230 VAC
Max.13A
10K
NTC
K1 A2
A1
1 3 5
2 4 6
LLL
PE
NNN
LN
L1 L2 L3 N PE
HEAT
SENSOR
NL
NL
FP
Pilot wire
signal
(France)
Power supply
230 VAC
Floor
sensor Power supply to
heating cables
K1: contacter
with integrated
suppression
device
Do not use contactor without interference filter.

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

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Program
selection Display See page Program selection
Comfort
temperature
adjustment
15
Scroll through
differrent
programs with
<>
buttons
EcoHome
temperature
and time/date
adjustment
23
EcoOffice
temperature
and time/date
adjustment
23
Press
<>
button to
confirm
selected
program
Standby
33
•
0h • 3 • • 6 • • 9 • • 12 • • 15 • • 18 • • 21 • • 24
•
0h • 3 • • 6 • • 9 • • 12 • • 15 • • 18 • • 21 • • 24

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Function Symbols Comfort EcoHome
EcoOffice Standby
Set time and date –✔ ✔
Select program Comfort
= Co EcoHome:
EcoH
EcoOffice:
EcoO
Standby:
OFF
Booster
(+5°C for 2 hours) ✔ ✔ –
• Set desired
comfort
temperature
• Continuous
operation in
comfort mode
(override auto-
matic 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 auto-
matic program)
–✔–
•
0h • 3 • • 6 • • 9 • • 12 • • 15 • • 18 • • 21 • • 24
1
I
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7

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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.
Read-out Symbols Comfort
EcoHome
EcoOffice
Standby
Time, temperature
or error code
✔ ✔ –
Day or menu
number
✔ ✔ –
Heating cable on ✔ ✔ –
Calibration mode ✔ ✔ –
Error ✔ ✔ –
Keypad locked ✔ ✔ –
Temporarily
override the
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
–✔–
•
0h • 3 • • 6 • • 9 • • 12 • • 15 • • 18 • • 21 • • 24
1
I
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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 < > buttons.
This is an approximate set value to get a comfort
temperature on the floor or in the room.
Heating-on symbol < > indicates on the display when
the heating cable is on.
Choose another program
• Use the < > buttons to scroll through 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 < > buttons and confirm by pressing
<>.

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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
<> keys.
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):

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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 < > for 3 sec. The
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: Push the
confirmation button < > for 3 sec. The
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 < > is
pushed again for 3 sec. within the 2 hour period.
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 < > in
3 seconds to change the Manual mode to Booster
mode. Push the confirmation button < > again 3
seconds to revert to AUTO mode.

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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
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 < >.
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
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
the thermostat.
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