Naturela NRC-6-SV User manual

NRC-6-SV Room Thermostat and Remote Control Module
NRC-6-SV
Room Thermostat and Remote Control Module
for Pellet Burner Controller
NPBC–V3C / NPBC–V4C
Software vers on 53/26
User Manual Ver 3.3 http://www.naturela-bg.com/en p.1 /21

NRC-6-SV Room Thermostat and Remote Control Module
Introduction
The Add t onal “Control module” NRC-6 w th software vers on SV s ntended to
work w th the NPBC-V3C-1 controller, wh ch s composed of a NPBC-V3M ”Execut ve
module” and a NRC-6-MV ma n “Control Module.” If the assembly s executed on NPBC-
V3M , t s connected n parallel to the ma n control module to ts second connector (type RJ
11) or by a coupler nto the RJ 11 connector. The add t onal control module d splays the most
mportant nformat on about the burner’s state and ts operat ons: operat on stage, errors
reg stered, the parameters measured by the sensors, and the current state of the t mers.
Add t onally, the NRC-6 SV module works as a room thermostat and measures the amb ent
temperature w th a temperature sensor, wh ch s connected to the box (connected w th a w re).
The screen’s graph s des gned a l ttle s mpler and t has a ded cated new blue f eld where the
amb ent temperature s shown. The add t onal control module has l m ted control funct on
compared w th NPBC-V3C-1/2 controller. The follow ng opt ons are ava lable: sw tch ng on,
off or to t mer mode, fuel type select on, adjustable sett ngs for the burner t mers, and clock
adjustment. The add t onal controller module has several sett ngs regard ng ts funct on as a
room thermostat: sett ng and ma nta n ng a des red room temperature, as well as the opt on for
t mer sett ngs, wh ch g ves the opportun ty to set d fferent temperatures dur ng the day.
The rest operat on parameters cannot be set from NRC-6. The temperature adjustment
funct on refers to the amb ent temperature, not to the bo ler temperature.
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NRC-6-SV Room Thermostat and Remote Control Module
SERVICE MANUAL
The add t onal controller module w th bu lt n thermostat (NRC-6 SV) has a number of
funct ons, wh ch can be operated w th help of s x buttons, just l ke the ma n “Control
Module.” The funct ons of each buttons are shown below:
The screen of the add t onal control module s d fferent depend ng on whether the burner s on
or off. When the burner s OFF:
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Navigation buttons
with different functions
depending on the current menu
Micro USB
On/Off
Menu / 
Measured ambient
temperature
Information fields of the
displayed data

NRC-6-SV Room Thermostat and Remote Control Module
When the burner s turned ON:
When the burner is switched on and detects the light from a burning fire, a flame will appear in the
picture of a kettle/boiler. If multiple messages need to be displayed on the bottom row, the
messages will circulate between one another every four seconds. The date is displayed in white
color, operation stage is in green, and registered errors are in red.
If the clock was not previously set, the display will show –:-- . In order for the burner to work properly,
the time needs to be set
In most cases, when error messages are displayed in red on the bottom row, you will be
notified by a three tone sound signal.
Some of the error messages are automatically cleared from the screen after the cause for the error
has been resolved. There are other alarm notifications such as back burning”, frozen boiler,” etc.,
which can only be cleared from the screen if the “◄“ button is pressed down for over two seconds.
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Time
Temperature of the water
in the boiler
Date,
burner's work phase (table 1)
or registered error (table 2)
Status bar with icons for the
outputs' current state and
Internet connection
Information fields with an
option to choose between
the displayed parameters
Information fields with an
option to choose between
the displayed parameters
Information fields with an
option to choose between
the displayed parameters
A measured ambient temperature.
The digits are in white, when the
set temperature is reached and in
orange, when it is not reached
Fuel type and number
currently in use

NRC-6-SV Room Thermostat and Remote Control Module
The nformat on f elds w th the poss b l t es for a select on can be found from the follow ng
l st:
Icon D splayed nformat on
Level of llum nat on, measured by the photo sensor.
Exhaust fan's speed
Informat on about the upcom ng act on of the bo ler’s t mer. If the t mers
are not act vated or the burner s turned on, there won’t be any
nformat on under the con. If there s at least one act vated t mer and the
burner s sw tched ON, the next t mer act on w ll be shown under the
con, along w th the t me and the day of act vat on
Real t me calculated feedback of the burner’s power. A cal brat ng
constant parameter for the auger motor’s capac ty has to be set to assure
the correct values are be ng prov ded. The cal brat ng constant s ava lable
n the menu:
Service settings > General settings > Fuel auger capacity
Degrees Cels us measured by the temperature sensor n the water heater
for the DHW ns de of t.
Temperature measured by the exhaust gases temperature sensor
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NRC-6-SV Room Thermostat and Remote Control Module
The set temperature s d splayed. If a heat ng t mer s act vated at the
moment, ts temperature sett ng w ll be d splayed.
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NRC-6-SV Room Thermostat and Remote Control Module
Informat on about the upcom ng act on of the bo ler t mers. If no t mer
has to be act vated, no nformat on w ll appear under the con. If there s
at least one act vated t mer, under the con there w ll be nformat on about
the t mer act on and when (t me and day) t w ll occur. If the next act on s
shutt ng down, th s means that the t mer s work ng at the moment and the
set temperature s changed to the temperature spec f ed by the t mer.
The bo ler’s temperature
Poss ble cons that would appear at the top blue bar:
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Indicates that the
room thermostat
is active
Active FC output Active CH pump
Internet connection Active DHW pump

NRC-6-SV Room Thermostat and Remote Control Module
Ho to turn on/off the burner:
By press ng the ON/OFF button, you w ll be red rected to a menu where you can choose a
S itch Mode.
Us ng the buttons “▲“ or“▼“ w ll move the red marker l ne up/down. You can choose
between three work ng modes: On, Standby, and Timers. Wh le the red marker s over an
opt on, press ng the ON/OFF button aga n w ll make a select on from the menu. If you don’t
press a button for more than 5 seconds or f you press the left nav gat on button (◄), you can
leave w thout mak ng any mode select on or a burner state change. The “fuel type” f eld of the
ma n screen g ves nformat on about the chosen fuel sett ngs for the present operat on of the
burner. If th s f eld s m ss ng, that means that the burner s sw tched off or t s scheduled to
be turned off later. The most certa n nd cat on that the burner s now work ng s f there s no
green text at the bottom row of the screen. Some of the operat on phases of the burner that
could be presented n green can be seen below n Table 1:
Table 1.
Work phase Work phase
1Cleaning 6Po er level P1
2Feeding 7Po er level P2
3Ignition 8Po er level P3
4Unfolding fire 9Intermediate Clean
5Maintenance 10 Extinguishing
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Currently selected row

NRC-6-SV Room Thermostat and Remote Control Module
For a clearer d st nct on between d fferent bo ler’s states (On/Standby), the m ddle sect on of
the screen has a d fferent v ew. Wh le the burner s n Standby mode, there w ll be no
nd cat on on the screen. If the burner was work ng before sw tch ng t to “Standby”, an
ext ngu sh ng process for the f re w ll start to take process. Keep n m nd, that t w ll take
some t me for the f re to be completely put out and after that some more t me for the clean ng
procedure to be complete. It s normal for the burner’s and bo ler’s aggregates to cont nue
operat ng for a certa n t me dur ng the Standby mode. When the burner s turned on, the
screen w ll change and a “Fuel type” f eld and bo ler’s temperature f eld w ll appear. The
burner w ll proceed to an automat c gn t on start f all the necessary cond t ons for the
burner's gn t on are fulf lled: the temperature of the bo ler s lower than the set temperature,
the room thermostat and the OD nput for forced stop are not act vated, and f there are no
reg stered ser ous errors.
Wh le on Timers mode, the burner w ll work only dur ng the t me ntervals when ts work s
allowed. These t me ntervals can be set from the menu opt on Timers n the User Settings.
If Timers mode s selected, but there are no act ve t mers set, the burner rema ns n Standby
mode and a warn ng message w ll d splayed on the screen (message s shown n the f gure
below). The controller w ll save the chosen mode and as soon as any of the t mers are
act vated, the burner w ll sw tch to Timers mode automat cally, w thout hav ng to select t
aga n.
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NRC-6-SV Room Thermostat and Remote Control Module
Ho to change the set temperature for room heating
When the controller s on the “Ma n Screen,” by press ng the up/down buttons (▲ / ▼), the
controller sw tches to a screen where the prev ously set temperature can be changed. The
temperature w ll move by 0.5 degrees Cels us every t me a button s pressed. If you hold one
of the buttons (▲ / ▼) the temperature automat cally ncreases by 2.5 degrees Cels us every
second the button s be ng held. Press the Menu button () to save the changes and return to
the ma n screen. If you don’t press any of the buttons for more than 5 seconds, the controller
w ll sw tch back to the ma n screen and no changes w ll be saved.
Additional information about burner’s operation
By pressing the right navigation button (►), while the controller is on the Main screen”, you can
proceed to the add t onal nformat on screens.
Statistical charts about hourly pellet consumption
The f rst screen s t tled “Pellets consumption.” It conta ns charted data about your pellet
consumpt on for the last four days. F rst th ng that the screen shows s nformat on about the
current day and by us ng the “▲” or “▼” buttons, you can nav gate through the rest of the
nformat on about the rest of the four days. Data s presented on the screen n the form of a
h stogram. The hor zontal ax s of the h stogram s d v ded nto 24 hours and the vert cal ax s
represents the consumed pellets n k lograms for the relevant hour. Above the chart s the
correspond ng date for the currently d splayed nformat on and on the bottom s the total da ly
pellet consumpt on.
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NRC-6-SV Room Thermostat and Remote Control Module
Information about the state of some of the current parameters
By press ng the r ght button (►) wh le the controller s st ll n the “Pellets consumption”
screen, the controller sw tches to an “Information” screen. It prov des data about the bo ler’s
set temperature, the DHW's temperature, the level of llum nat on measured by the photo
sensor, the temperature of the exhaust gases, the bo ler’ s temperature, and the total pellet
consumpt on s nce the last reset was performed.
By pressing and holding the menu button for more than 2 seconds, the total pellets consumption
number is being reset. However, the time and date of the reset is being saved, which means that you
will be able to track how much your pellet consumption has been, since the last reset.
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Indicator for
the next page
Date format
dd/mm/yyyy

NRC-6-SV Room Thermostat and Remote Control Module
Keep in mind that pellets consumption for the current day will not be affected by the reset,
because the program starts recording data from 00:00 of the date displayed on the screen.
By press ng the left nav gat on button (◄) on “Information” screen you w ll be brought back
to the “Pellets consumption” screen.
On top of these parameters, there is other data, important for the job of the burner, which can
be brought out to the main screen.
Soft are and controller version
To f nd nformat on about the software and controller vers ons, you need the press the down
button (▼) wh le be ng n the “WiFi connections” screen.
Diagnostics
Wh le on the “Information” screen, by press ng the r ght nav gat on button (►) you w ll be
red rected to the “Diagnostics” screen. It prov des a l st w th nformat on about prev ously
reg stered errors and the exact t me and date when they have occurred. If the total number of
errors s more than four, the buttons(▲ or ▼) can help you nav gate through the prev ous or
next page, s nce only four not f cat ons f t on the screen at once. If you hold the Menu button
() for more than two seconds, t w ll reset the accumulated d agnost cs nformat on. The
“star” symbol marks the latest reg stered not f cat on.
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NRC-6-SV Room Thermostat and Remote Control Module
Table 2 prov des a l st of all the messages that can appear on th s screen and g ves a full
descr pt on of what they are for.
Messages one to thirteen will also appear as messages for registered errors on the bottom
line of the main screen.
Message Clearing the
error
Description
1Back burning Button ◄ Thermostat for back burn ng s tuat on has been
act vated
2Off boiler TS automat cally Bo ler's temperature sensor s hav ng an ssue
3Short boiler TS automat cally Short c rcu t n the bo ler’s thermo sensor.
4Boiler Frost Button ◄ S tuat on ” frozen bo ler” s reg stered. T me and
date are also recorded.
5Ignition Fail Button ◄
6Off RB Sensor automat cally Back burn ng temperature sensor s nterrupted
7Short RB Sensor automat cally Short c rcu t n the back burn ng temperature
sensor
8Off WH Sensor automat cally DHW temperature sensor s nterrupted
9Short WH Sensor automat cally Short c rcu t ns de theDHW temperature sensor
10 Off PT Sensor automat cally Pt100 gases h gh temperature sensor s nterrupted
11 Short PT Sensor automat cally Short c rcu t n the pt100 gases h gh temperature
sensor
12 High Flue gas
temp
Button ◄ The exhaust temperature s too h gh
13 Flue gasses alarm Button ◄ The exhaust temperature s extremely
h gh and the burner has stopped
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NRC-6-SV Room Thermostat and Remote Control Module
14 No Exec module --- No connect on w th the Execut ve module
15 Po er On --- Date and t me when the power supply to the
controller was turned on
16 Po er Off --- Date and t me of controller operat on before the
power supply to the controller was sw tched to off
17 Reset --- Date and t me when the controller's software or the
nformat on n the D agnost cs screen has been
reset.
OR
F rst record after restart ng of the controller or
after delet ng of the buffer for d agnost cs.
Wh le on the “Diagnostics” screen, f you press the left nav gat on button (◄), you w ll be
red rected back to the “Information” screen.
When the error messages are displayed in red color on the bottom line of the main screen,
they can be cleared by two ways:
•or all the messages with permitted automatical cleaning, errors will be cleared
on their own, as long as the issue has been resolved.
•The second way for an error message to be cleared is manually. While in the
“Main screen” page, by pressing the left navigation button for more than 2
seconds will remove the error message.
Settings of the operation parameters
Ways to change operation parameters
When the operat onal parameters of the controller are be ng set, the screen w ll be d splay ng
one of the follow ng opt ons:
•A l st cho ce- The red bar nd cates the currently h ghl ghted row. Press the up or
down nav gat on button (▲ or ▼) to move the bar. By press ng the r ght nav gat on
button (►) you conf rm the select on and move to the next screen. An arrow po nt ng
down at the bottom of the screen or up on the top of the screen nd cates that there are
more opt ons n the correspond ng d rect on outs de of the v s ble area of the screen.
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NRC-6-SV Room Thermostat and Remote Control Module
•Screen sett ngs- When such a screen s d splayed, a p nk frame marks the f rst ed table
parameter. The left and r ght nav gat on buttons (◄ ►) move the frame to the
prev ous or next ed table parameter. The up or down nav gat on buttons (▲ ▼)
change the currently selected parameter's value, respect vely up and down or choose
and release. The parameter's type could be any of the follow ng: ed table numer cal
values, cho ce f eld w th ava lable value act vated/ deact vated( chosen/not chosen) or
l st w th text values. The numer cal parameters check for l m ted value n the prev ous
def ned range. If the end of the range s reached, the value stops chang ng, desp te the
rema n ng sound s gnal, when press ng the change button.
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If there s a check s gn,
the t mer s act ve
Currently selected row
Screen function for list choice
Screen sett ngs
Frame marked on ed table
f eld
If there sn' t a check s gn,
the t mer s not act ve
Check s gn as0
LED- Selected
Explanatory nformat on
F eld numer cal parameter
Check s gn as LED- not
selected
Explanatory nformat on

NRC-6-SV Room Thermostat and Remote Control Module
The button  (Menu) s used to save the changed parameters and to ex t to the prev ous
screen. There s a default max mum wa t ng t me for hav ng no buttons pressed. After th s
t me passes, the controller br ngs you back to the prev ous screen and does not save any
changes that were made.
Pressing and holding the navigation buttons in most cases will lead to a repetition of the
function of the button. The repetition is 5 times per second and leads to increasing or
decreasing of the selected parameter value or moving the mark between parameters.
User parameters settings
Wh le hav ng the ma n screen on the d splay, a short press ng of the Menu button w ll
lead to a screen w th opt ons to correct some of the parameter groups. Press the up or
down nav gat on buttons (▲ ▼) to move the red l ne that nd cates the selected row.
Press the r ght nav gat on button (►) to select the group sett ng and to enter the menu
correspond ng to the selected row. You w ll cont nue work ng n the way descr bed
above.
Time and Date sett ng– The t me format s 24-hours and the date format s
DD/MM/YY. The day of the week s automat cally calculated after sett ng the date. If
after the n t al setup, you change the t me, the t mer for seconds w ll reset. Chang ng
only the date w ll not reset the seconds. In order for the automat c check of the t me to
work, the controller needs to be connected to the Internet and to the Naturela system.
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NRC-6-SV Room Thermostat and Remote Control Module
Language
Press the up or down nav gat on buttons (▲ ▼) to select the language for the controller's
menu and conf rm your cho ce by press ng the r ght nav gat on button (►) or Menu ().
After that, you w ll be red rected back to the Main Menu, but w th the language selected. An
arrow po nt ng down at the bottom of the screen or up on the top of the screen nd cates that
there are more opt ons n the correspond ng d rect on outs de of the v s ble area of the screen.
Timers – In th s menu you can adjust and act vate the t mer ntervals for when the
burner's operat on s allowed. If at least one of the three t mers s act vated, the burner
w ll work only dur ng the nterval of the act vated t mer/s. The burner w ll be on
Standby mode when the t me s outs de of the ntervals. In add t on the rest of the
requ red cond t ons must also be presented, such as: the work mode must be anyth ng
but “Standby”, the temperature of the water n the bo ler must be below the set
temperature, OD and RT nputs must not be act ve, and others.
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This option is available only if
the controller is equipped with
WiFi modem and has
an access to the Internet

NRC-6-SV Room Thermostat and Remote Control Module
Keep in mind that the time in column ”On” has to start before the time in column
“Off”! If necessary, set the “Off” time first.
In order to see better if and when the timers are going to activate the burner (specific
time and date), you could have that information in the top field side of the main
screen.
Heating timers- Th s menu allows you to set and act vate d fferent ntervals of the day, each
w th the r own set amb ent temperature. If a t mer s act ve, n the nd cated ntervals, the
sett ng temperature w ll be replaced by one that s g ven n row “Ne set room
temperature”. Outs de the range ntervals the common set room temperature w ll be used.
Have in mind, that the time in column “On” has to be before the time in column ”Off”! If
necessary, set the “Off” time first, to provide larger range for the “On“ settings.
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If there s a check s gn,
the t mer s act ve
Turn on the LEDs only for the
days of the week when th s
part cular t mer should be act ve.
LED on- act ve day
LED off – nact ve day
Days of the week
If there s a check s gn,
the t mer s act ve
Turn on the LEDs only for the
days of the week when th s
part cular t mer should be act ve.
LED on- act ve day
LED off – nact ve day
Days of the week

NRC-6-SV Room Thermostat and Remote Control Module
To see more clearly whether the heating timers are activated, if they will control the set
temperature, what will be their next operation On/Off and what time they get activated, you
can display their information in the information field. This information field is positioned on
the top of the screen along the field” Set temperature”.
Fuel choice- From th s menu, you can choose the prel m nary set Fuel type, wh ch s be ng
used at the moment. All the necessary parameters for sett ng the d fferent fuel type prof les
you can f nd n Burning Setting menu.
Information field – Sets the nformat on, wh ch w ll be d splayed n the four nformat on
f elds on the top of the screen.
The poss ble nformat on to be d splayed n each f eld s as follows:
•Flame level - Level of llum nat on, measured by the photo sensor
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Order of the fields
and their numbers
Displayed information
from the left information
field

NRC-6-SV Room Thermostat and Remote Control Module
•Chimney fan - Current speed of the ch mney fan
•Boiler Timers - the next act on, controlled by the t mers for nclus on/exclus on of the
burner
•Po er – calculated current power of the burner, from consumpt on of pellets
•Temp DHW – temperature of the hot water n the heater
•Exhaust temp – temperature of the exhaust gases
•Set temperature – Current set temperatures
•Timers for heating – next act on that s go ng to be performed by the t mers.
Screen – The f eld Brightness changes the llum nat on of the d splay. NRC-6 is not
equipped with automatic brightness adjustment of the screen
Additional information about controller's operation
After the power supply of the controller has been turned on for two seconds, a yellow text
w th the Control module's type w ll appear on the screen. The text w ll d ffer based on ts
software. NRC-6 MV’s software controls the pellet burner and the software of the NRC-6 SV,
prov des the add t onal opt on to work as a room thermostat. Next, a screen w ll come up,
show ng the vers on of the controller and the software vers on of the Control and Executive
modules:
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