Robur Calorio Series User manual

Calorio Serie
Balanced flues gas heaters
Natural gas / LPG fired
Installation, use and
maintenance manual

Edition: 03/2009
Code: D-LBR553
This manual has been drawn up and printed by Robur S.p.A.; whole or partial
reproduction of this manual is prohibited.
The original is filed at Robur S.p.A.
Any use of this manual other than for personal consultation must be previously authorised
by Robur S.p.A.
The rights of those who have legitimately filed the registered trademarks contained within
this publication are not affected
With the aim of continuously improving the quality of our products, Robur S.p.A. reserves
the right to vary the data and contents of this manual without prior notice.

Prefazione
3
FOREWORD
This manual is for anyone who must install or use the Robur Calorio series gas fired
heating units.
This manual especially applies to the plumbers who must install the heating unit, to the
electrician who must connect the heating unit to the electrical system and to the end user
who must check that it functions properly.
This manual is also for the technicians regarding the principle maintenance operations.
Summary
This manual is composed of six sections:
Section 1 pertains to the end user, the plumbing installer, the electrical installer and to
the qualified service engineer; it provides general warnings, technical data and the
construction characteristics of the Calorio series heating units.
Section 2 is for the end user; it provides all the information necessary for the correct use
of the Calorio series heating units.
Section 3 is for the plumbing installer; it provides the necessary indications to the
plumber in order to perform the correct installation of the Calorio series heating units.
Section 4 is for the electrical installer; it provides the necessary information to the
electrician in order to perform the electrical connections of the Calorio series heating units.
Section 5 is for the qualified service engineer; it provides the instructions to regulate the
flow of gas and to perform the gas conversion. It also gives indications regarding
maintenance.
Section 6 is for the end user, the plumbing installer, the electrical- installer and the
qualified service engineer. It contains information concerning the accessories available
for the Calorio series.
For rapid access to the sections, refer to the relative graphical icons (see Table 2)
contained in the right margin of the odd-numbered pages.

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Icon definition
The icons present in the margins of the manual have the following meanings.
Danger
)Warning
Note
Begin operational procedure
Reference to another part of the manual or to
a different manual
Table 1 –Descriptive Icons
General information and technical
characteristics
End user section
Plumbing installer section
Electrical installer section
Qualified service engineer section
Accessory section
Table 2 – Icons sections

Indice dei contenuti
5
TABLE OF CONTENTS
SECTION 1 GENERAL INSTRUCTIONS AND TECHNICAL CHARACTERISTICS........7
1.1 GENERAL ISTRUCTIONS................................................................................................................. 7
1.2 MAIN OPERATING CHRACTERISTICS ........................................................................................... 9
1.3 PRODUCT CHRACTERISTICS....................................................................................................... 10
1.4 TECHNICAL DATA.................................................................................. ........................................11
1.5 DIMENSIONS OF CALORIO CONVECTORS................................................................................ 12
SEZION 2END USER SECTION.....................................................................................13
2.1 HOW TO LIGHT ON AND OFF THE GAS CONVECTOR............................................................... 13
LIGHT ON (HEATING)............................................................................................................... 15
HUMIDIFIER (models 42 e 52) .................................................................................................. 16
TEMPORARY SHUT DOWN ......................................................................................................16
SUMMER VENTILATION (model 52) ........................................................................................ 16
SEASONAL STOP......................................................................................................................16
2.2 PROGRAMMABLE TIMER (model 42 and 52)............................................................................... 17
SET AND PROGRAMMING OF THE TIMER .......................................................................... 18
STARTING CONDITIONS ........................................................................................................ 18
SET THE HOUR AND THE DAY ............................................................................................... 18
SET THE ON/OFF PROGRAMS ............................................................................................... 19
CANCEL A SINGLE PROGRAM ............................................................................................... 20
CANCEL ALL PROGRAMS, HOUR AND DAY ........................................................................ 20
THE SKIP FUNCTION ..............................................................................................................20
SECTION 3 INSTALLER PLUMBER...............................................................................21
3.1 GENERAL NORMS OF INSTALLATION.........................................................................................21
3.2 FLUE EXHAUST AND COMBUSTION AIR PIPE............................................................................ 22
3.3 INSTALLATION SEQUENCE .......................................................................................................... 23
INSTALL THE GAS CONVECTOR TO THE WALL .................................................................. 23
CONNECT THE GAS CONVECTOR TO THE GAS NETWORK INSTALL THE EXTERNAL
TERMINAL 26.............................................................................................................................26
SECTION 4 ELECTRICAL INSTALLER...........................................................................29
4.1 ELECTRICAL CONNECTION .........................................................................................................30
SECTION 5MAINTENANCE AND SERVICING...............................................................31
5.2 HOW TO REGULATE THE GAS VALVE..........................................................................................31
5.3 NATURAL GAS FEEDING............................................................................................................... 31
MODELS 41, 42 and 51................................................................................................................... 31
MODEL 52 – REGULATION PRESSURE AT THE MAXIMUM HEAT OUTPUT............................ 32
MODEL 52 – REGULATION PRESSURE AT THE MINIMUM HEAT OUTPUT .............................32
5.4 L.P.G. ................................................................................................................................................33
FEEDING REGULATION OF THE PRESSURE TO THE BURNER FOR THE MODELS 41, 42
AND 51.............................................................................................................................................33
MODEL 52 – REGULATION OF THE PRESSURE AT THE MAXIMUM HEAT OUTPUT.............. 34
MODEL 52 – REGULATION OF THE PRESSURE AT THE MINIMUM HEAT OUTPUT......... ......34
5.5 REPLACEMENT OF THE BURNER INJECTOR: FROM NATURAL GAS TO L.P.G......................35
REPLACEMENT OF THE BURNER INJECTOR: FROM L.P.G. TO NATURAL GAS.............. .....36
5.6 SECURITY DEVICES ........................................................................................................................37

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5.7 FUNCTIONING ERRORS................................................................................................................ 38
CASE 1: THE UNIT STOPS DURING THE FIRST PHASE OF START UP ........................... 38
CASE 2: THE UNIT STOPS DURING THE STANDARD FUNCTIONING............................... 38
5.8 CLEANING AND MAINTENANCE .................................................................................................. 39
5.9 ASSISTANCE................................................................................................................................... 39
SECTION 6 ACCESSORIES ..........................................................................................41
TOWEL WARMER (Code O-SPP000)..................................................................................... 41
FOOD WARMER (Code O-SPP001) ........................................................................................ 41
STICK FRAGRANCE DIFFUSER (Code O-SPP002) ............................................................... 42
UMBRELLA STAND (Code O-SPP003) .................................................................................... 42

Sezione generalità e caratteristiche tecniche
7
SECTION 1 GENERAL INSTRUCTIONS AND TECHNICAL
CHARACTERISTICS
In this section there will be general instructions to be followed for the installation and use
of gas fired convectors Calorio series, a short paragraph about the operation of the gas
convectors, their main characteristics and the technical data.
1.1 GENERAL INSTRUCTIONS
This manual is an integral and essential part of this product and must be given to the end
user.
This unit must be exclusively used for the purpose it was intended. Any other use is to be
considered improper and therefore dangerous.
The manufacturer cannot be held responsible for any damage resulting from incorrect
installation or failure to comply with the manufacturer’s instructions.
The unit must be installed respecting the internal laws.
Do not obstruct the intake air of the fan neither the outlet air grid.
)
In case of failure and/or bad/poor operation, stop the unit (shut off the gas supply)
do not attempt any repair or direct servicing. Call only qualified service engineer.
Any misapplication of the above instructions can compromise the safety of the unit.
To ensure the efficiency of the unit and its proper operation, it is essential that a qualified
service engineer carry out annual maintenance in accordance with the manufacturer’s
instructions.
Qualified service engineers are those having specific technical experience in
the installation of heating units for residential applications, designated by a local authority.
Should the unit be sold or transferred to another owner, ensure that the manual remains
with the unit for the use of the new owner and/or the installer.
Before starting the unit, qualified personnel must check:
- that the electrical and the gas supply ratings do exactly correspond to those
shown on the original rating plate.
- that the exhaust flue and the inlet air supply are properly installed.
- that the combustion air feed and exhaust are properly fitted in accordance with
the existing standards.
- the proper internal and external sealing of the combustion apparatus
- that fuel flow control is in accordance with the unit power requirements.
- that the unit is fed with the specific type of fuel for which it has been pre-set.

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- that the fuel supply pressure is within rated limits.
- that the fuel supply system is suitable for the unit and that all safety and control
devices required by the existing standards are duly installed
Do not use gas pipes to earth electric apparatus.
Avoid unnecessary supply when the unit is not in use and always close the gas valve.
In case of prolonged absence isolate the main gas inlet valve to the unit and disconnect
all electric supply.
IF YOU SMELL GAS
•do not activate electric switches, telephones or any other object or device that
may cause sparks.
•shut off gas supply.
•immediately open doors and windows to create drafts of air that purify the room.
•call for qualified servicing engineer.

Sezione generalità e caratteristiche tecniche
9
1.2 PRODUCT DESCRIPTION AND MAIN OPERATING
CHARACTERISTICS
The Calorio gas heater, is an independent heating product with an isolated combustion
chamber and forced draught.
It has been projected to be installed indoor.
It can operate either with natural gas and liquid propane gas (category II2H3+, type C13,
regulation EN 1266).
The combustion air intake and the exhaust of fumes are external to the system through
two coaxial pipes and are drawn by the operation of an electric fan placed in the
combustion circuit. Therefore, the unit will have to be installed on an external perimeter
wall or close to it depending on the maximum extension of the coaxial pipe system (see
section Errore. L'origine riferimento non è stata trovata. ”Installation”).
The operation principle of the Calorio range is based on a convective movement of the
ambient air. The air going through the unit is drawn upwards and heated then diffused in
the ambient through the outlet grille. Particularly models 42, 51 and 52 are defined as
”ventilated” since the movement of ambient air is due to the presence of a fan placed in
the lower section of the unit. Except model 41, which is defined as ”static” since the
convective motion is natural.
The operation of the unit is very simple and completely automatic thanks to the
thermostatic regulation and the programmable timer (standard equipment on models 42
and 52, optional on the other models): The end user only needs to start the unit, choose
the desired temperature (to be selected on the thermostat) and, for the models 42 and 52,
set the operation period of the unit on the programmable timer.
The isolated combustion chamber is a best safety feature for the premises where the unit
is to be installed: there is no risk of leakage of the combustion products and neither
oxygen necessary for the combustion has been taken from indoor. It is not necessary
the installation of any grid or openings for the ventilation of the ambient.
A special flame detection device, that operates through a ionization flame sensor,
immediately stops the gas supply in case the flame accidentally goes off.
Models 42 and 52 grant a higher comfort thanks to an air humidifier placed on the left
hand side of the unit.
Additionally model 52 can also operate in summer time (the fan can work while the burner
is off). This allows a pleasant summer ventilation (movement of room air).

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1.3 MAIN COMPONENTS
Calorio gas fired convectors are equipped with:
- Combustion chamber and stainless steel tubular heat exchanger patented
with very high efficiency;
- Control box with set of the ambient temperature;
- Centrifugal fan (patented) with double anti vibration system (model 41
excluded);
- Flue blower;
- Security device with ionisation flame sensor;
- Programmable timer (for models 42 and 52);
- Air humidifier (for models 42 and 52);
- Double power min- max (for model 52);
- Summer ventilation (for model 52);
- Coaxial pipes for combustion air intake and exhaust flue Ø 49/35 mm;
- Wall external stainless steel terminal (patented) min. dimensions;
- Panel plate painted with epoxy powder, available in three colours: beige, white
and grey.

Sezione generalità e caratteristiche tecniche
11
1.4 TECHNICAL DATA
DESCRIPTION U.M. 41 42 51 52
TYPE OF EQUIPMENT C13
UNIT CATEGORY II2H3+
MAXIMUM NOMINAL HEAT INPUT 1kW 3,25 3,62 4,65 5,23
MAXIMUM NOMINAL HEAT OUTPUT kW 2,92 3,26 4,19 4,71
REDUCED NOMINAL HEAT INPUT 1kW --- --- --- 3,60
REDUCED NOMINAL HEAT OUTPUT kW --- --- --- 3,18
MAX/MIN GAS CONSUMPTION1 NATURAL GAS
L.P.G. G30
L.P.G. G31
m3/h
kg/h
kg/h
0,344
0,256
0,251
0,383
0,285
0,280
0,492
0,367
0,360
0,553/0,381
0,412/0,284
0,405/0,278
EFFICIENCY % 90%
FEEDING PRESSURE WITH NATURAL GAS
MAX
NOMINAL
MIN
mbar
25
20
15
FEEDING PRESSURE WITH L.P.G. (G30)
MAX
NOMINAL
MIN
mbar
35
30
28
FEEDING PRESSURE WITH L.P.G. (G31)
MAX
NOMINAL
MIN
mbar
40
37
30
NOISE LEVEL (AT 3 M) MAX
MIN dB(A)
32
---
33
---
35
---
39
35
INJECTORS DIAMETERS NATURAL GAS
L.P.G. mm see Table 4 at page 35
PRESSURE TO THE BURNER AT THE MAX POWER
NATURAL GAS
L.P.G. G30
L.P.G. G31
mbar
10,5
28,7
36,7
10,5
28,8
36,7
10
29
37
9
28
35,5
PRESSURE TO THE BURNER AT THE REDUCED
POWER NATURAL GAS
L.P.G. G30
L.P.G. G31
mbar
---
---
---
---
---
---
---
---
---
5,0
14,7
19,7
GAS CONNECTION (UNI ISO 7/1) Rp 3/8 F
Ø HOLE DIAMETER FOR INLET/OUTLET PIPE mm 50
POWER SUPPLY 230V 50Hz monofase
WATTAGE W 20 45 65 86
MAX LENGTH COAXIAL PIPES m 1
WEIGHT kg 24 25 26 26
Table 3 – Technical data 41, 42, 51 and 52
1 DATA RELATED TO THE HEAT INPUT AND TO THE GAS CONSUMPTION ARE REFERRED, TAKING IN CONSIDERATION THE
NORM PREN 437, AT THE FOLLOWING VALUES: NATURAL GAS: P.C.I. 34.02 MJ/M3 AT 15ºC 1013.25 MBAR; BUTAN (G30):
P.C.I. 45.65 MJ/KG; PROPAN (G31): P.C.I. 46.34 MJ/KG

Linea Calorio – Radiatori individuali a gas – Libretto d’installazione, uso e manutenzione
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1.5 DIMENSIONS OF CALORIO GAS CONVECTORS
Figura 1 – Dimensions of Calorio 41, 42, 51 and 52 convectors
71,5 cm
35,4 cm
10 cm10 cm
55,3 cm
27,65 cm27,65 cm
Ø 4,9 cm
Ø 3,5 cm
min 8 cm min 10 cm
20,8 cm
3 cm

Sezione utente
13
F
B
E
C
D
H
G
A
C
D
B
A reset key
B temperature regulation knob
C red light indicating unit shutdown
D green light indicating working of the unit
Emanual/programmed key
F programmed timer
Gmin/max output key
A
B
C
D
E
F
SECTION 2END USER SECTION
In this section you will find all information necessary to let Calorio gas convectors
functioning in a correct way.
The functioning of Calorio gas convectors is leaded by the ambient thermostat equipped
with all models and, in models 42 and 52, by the programmable timer.
2.1 HOW TO START AND TURN OFF THE GAS CONVECTOR
)The first start up of the unit must be carried out by qualified service engineer.
Before turning the unit on the qualified service engineer must check:
•That the values shown on the unit plate are exactly the same as the ones of the
electric and gas supply.
•The unit adjustment actually responds to the unit operating capacity.
•The proper working of air inlet and fume exhaust flue system (in accordance with
the existing regulations).
CALORIO 52 CALORIO 51/41 CALORIO 42
H summer/winter and reset key
Figure 2 – Control panel

Linea Calorio – Radiatori individuali a gas – Libretto d’installazione, uso e manutenzione
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Sezione utente
15
START UP (HEATING)
To have: the gas convector connected to the electrical and gas network.
1. Open the gas supply valve.
2. Supply electricity to the convector by connecting the tri pole wiring
3. For models 42 and 52 set the timer according the end user specific requirements
(see ”programmed timer” section, model 42 and 52).
Set ”E” key (see Figure 2 )
manual/programmed on the desired system of operation of the unit: loose key - MAN
position in case the unit is required to operate through the room thermostat or
pressed key - AUTO position in case the unit is required to operate also by means of
the programmed timer.
4. Turn the B knob for temperature regulation at the highest desired temperature (see
Figure 2).
5. After 30 seconds approx. the gas valve opens and the ignition electrode starts
sparkling for a max. of 10 seconds.
6. In presence of flame the ignition electrode stops automatically the sparkling keeping
the unit on; the green light D will be on (see Figure 2).
The light on of the green light D indicates the correct functioning of the convector.
7. On the contrary the control box will block the unit and the blower will stop, this
function is characterised by the permanent “on” of the red light C (see Figure 2).
The light on of the red light C indicates the flame block of the convector.
)In order to let the unit restart it is necessary to press the reset button (A) for models
41, 42 and 51, while for the model 52 it is necessary to press twice the reset button
(H) (see Figure 2).
8. Once the convector is on, turn the thermostat knob clockwise to increase the room
temperature and in the opposite way to decrease it.
The values shown on the thermostat knob are typical. The temperature value is
dependent upon the environment where the unit has been installed. An actual
relationship between the thermostat value and the room temperature can be
achieved by measuring the temperature of the room at a certain thermostatic
regulating value.
9. In the model 52 pressing the G key (see Figure 2) a higher output can be selected
for a quick warming of the room or a minimum output rate can be selected to
maintaining the existing temperature value. The fan starts operating automatically
only when it receives demand from the fan thermostat, and the exchanger is heated
this in order to avoid the cold air draught in the room. The fan will turn off when the
exchanger is cold.

Linea Calorio – Radiatori individuali a gas – Libretto d’installazione, uso e manutenzione
16
HUMIDIFER (models 42 and 52)
For a higher comfort the convectors models 42 and 52
have been equipped with a humidifier. Its use is very simple.
It is enough to fill in periodically, by means of
a funnel, the small tank located on the left side
of the unit (see Figure 3)
For a higher comfort the convectors models 42
and 52 have been equipped with a humidifier.
Its use is very simple. It is enough to fill in
periodically, by means of a funnel, the small
tank located on the left side of the unit (see
Normally the tank needs to be refilled after
4-5 days.
Figure 3 –Humidifier location
)The use of water low in limestone is advisable (possibly use distilled water) in order
to prevent any possible calcareous sedimentation that may be difficult to remove.
Also anti calcareous tablets for humidifiers are commercially available. The
humidifier capacity is 0,35 litres.
TEMPORARY TURNING OFF
To have: the gas convector connected to the electrical and gas network.
1. To temporarily stop the unit turn the thermostat knob to the minimum temperature.
Turning the thermostat to the minimum values, temperature will
be regulated some degrees above zero value. This will prevent
freeze-up.
For all models equipped with time programmer (42 and 52) the unit can temporarily be
stopped by turning the ”A” key to the O position. (see Figure 2).
Do not turn down power to switch off the units. This procedure can ruin the
equipment.
SUMMER VENTILATION (model 52)
To have: the gas convector connected to the electrical network.
1. Close the gas valve and check that the electrical supply will be on.
By pressing the summer/winter H key (see Figure 2) , only the fan starts working.
This will allow a light and pleasant ventilation of the ambient air.
Water filling hole

Sezione utente
17
SEASONAL STOP
To have: the gas convector connected to the electrical and gas network.
1. Close the gas valve.
2. Cut off the electrical supply.
2.2 PROGRAMMABLE TIMER (models 42 and 52)
Figure 4 – Programmable timer
KEYS FUNCTIONING
On / Off switch
Position I: The appliance is controlled by the room thermostat. In this
condition the functioning of the gas convector depends ONLY
from the temperature set on the ambient thermostat: it will not
follow any program of the timer.
Position AUTO: The appliance is controlled by the timer and the room thermostat.
In this condition the gas convector works ONLY during the
starting hours set on the timer when there is heat demand
(ambient temperature lower than the one set on the ambient
thermostat).
Position O: The appliance is turned off
Setting / regulation switch
Position : Time setting
Position RUN: Operation (the display shows the current time)
Position Ê: Setting of Programming
A) Programmes selection
B) Programmed day setting
C) Hours setting
D) Minutes setting
A B
E
C
D
F
G
R

Linea Calorio – Radiatori individuali a gas – Libretto d’installazione, uso e manutenzione
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1 2 3 4 5 6 7
0:0
0

1 2 3 4 5 6 7
E EE

1 2 3 4 5 6 7
0:0
0

1 2 3 4 5 6 7
0:0
0

1 2 3 4 5 6 7
0:00
1
☼
1
E) SKIP button (it temporarily deletes the programmed schedule)
R) Reset button
CHARACTERISTICS
- Long life lithium battery after 48 hours recharge.
- Visual of day and current hour.
- Daily and weekly program.
- Blocks of programme due to the repetition of timing insertions:
1-2-3-4-5 (Monday to Friday)
1-2-3-4-5-6 (Monday to Saturday)
1-2-3-4-5-6-7 (Monday to Sunday)
6-7 (Saturday to Sunday)
- Minimum duration of conversion 1 minute.
- Quick surge: keeping pulled any selection button, the surge will become quicker.
- N°16 available programs (8 ON and 8 OFF).
SET AND PROGRAMMING OF THE TIMER
STARTING CONDITIONS
- Position the right selector B (see Figure 4) in RUN position.
Press reset R button (see Figure 4). The indicator on the display
will blink.
- If reset R button will be pressed (see Figure 4) when the selector
B is in Êposition, on the display will appear the error warning
EEE.Moving the selector B in RUN position the advice will
disappear; press R button again to return to the previous position.
- If B selector will be moved in position, the indication on the
display will remain fixed.
- If B selector will be moved in RUN position, the advice on the
display will remain fixed, but if there will be the double point, then
it will blink.
- If B selector will be moved in Êposition, the advice on the
display will blink. On the display will appear the light symbol (☼)
and the written 1 and 1.
SET THE TIME AND THE DAY
To have: the B selector in position.
1. We plan to set 15:16 hours on Wednesday.
2. Set the day of the week.
Pressing the button 1...7 (button D of Figure 4) triangular index
inch of one unit. Number 1 is Monday, number 2 is Tuesday
and so on.
3. Set of the hour and minutes.
In order to obtain 15:16 h press button h for the hours, button m
for minutes. The advice on the display will advance every time
1 2 3 4 5 6 7
0:0
0

1 2 3 4 5 6 7
15:16


Sezione utente
19
you will press the button. Keeping pressed the button over 2
seconds the surging will become quicker until you will stop
pressing the button.
4. After having set the day and the hour, move the right B selector in the RUN position.
The advice on the display is fixed, but the double point will blink.
SET THE ON/OFF PROGRAMS
The timer has 16 programs:
●n.8 ON programs (1-3-5-7-9-11-13-15)
●n.8 OFF programs (2-4-6-8-10-12-14-16)
The starting program of the unit is visible thanks to the lamp on the right side of the
display.
When the lamp does not appear on the display it means that’s an OFF programme
To have: The B selector in Êposition. The advice on the display blinks and on the
right side of the display they appear the writing 1 and 1and the lamp symbol
corresponds to the ON programme.
1. Press the button 1...7 to set the day or the days we want the
start of the units (for example Tuesday corresponds, on the
display, to the day n°2). To set the starting timetable desired
press button h for the hours and the button m for the minutes
(for example 9and 3minutes). At each pressure of the button
the advice on the display will advance. Keeping pressed the
button over 2 sec., the surging will become quicker until you
will stop pressing the button.
2. Press the
Êbutton (ref. C of Figure 4). On the right side of the
display it will appear the number 2 without the symbol of the
lamp corresponding to the OFF programme.
3. Press the button 1...7 to set once again the same day or the
same days previously chosen for the ON programme 1
(Tuesday in the example). To set the OFF hour press the
button h and the button m for the minutes(in the example 11h e 4
min.).
4. Repeat from point 1 to point 3 to set other ON/OFF programs.
In the case of same ON/OFF timetable during the week, programming will be easier
if we utilise blocks of days:
●1-2-3-4-5 (from Monday to Friday)
●1-2-3-4-5-6 (from Monday to Saturday)
●1-2-3-4-5-6-7 (from Monday to Sunday)
●6-7 (Saturday and Sunday)
1 2 3 4 5 6 7
0:00
1
☼
1
1 2 3 4 5 6 7
9:03
1
☼
1
1 2 3 4 5 6 7
0:00
1
☼
1
1 2 3 4 5 6 7
0:00
2

1
1 2 3 4 5 6 7
11
:0
4
2

1