Robur Supercromo Series Mounting instructions

TABLE OF CONTENTS
SECTION 1 GENERAL INSTRUCTIONS......................................................................2
1.1 PRODUCT DESCRIPTION AND MAIN OPERATING CHARACTERISTICS .................... 3
1.2 TECHNICAL DATA.............................................................................................................4
SECTION 2 INSTALLATION.........................................................................................6
2.1 INSTALLATION PROCEDURES........................................................................................ 9
2.2 GAS PRESSURE ADJUSTMENT ...................................................................................... 16
2.2.1 NATURAL GAS FEEDING ................................................................................................. 17
2.2.2 L.P.G. CONVERSION......................................................................................................... 17
2.3 REPLACEMENT OF THE BURNER INJECTOR ............................................................... 18
2.4 CONVERSION TO ANOTHER TYPE OF GAS ................................................................. 19
2.5 WIRING CONNECTIONS................................................................................................... 20
SECTION 3 USE AND OPERATION OF THE UNITS ...................................................22
3.1 STARTING OF THE UNIT ................................................................................................. 22
3.2 TURNING OFF OF THE UNIT............................................................................................ 23
3.3 SUMMER VENTILATION FOR MODELS 5002 AND 8002 ............................................... 23
SECTION 4 PROGRAMMABLE TIMER........................................................................24
4.1 DESCRIPTION OF MAIN CHARACTERISTICS ................................................................ 24
4.2 FUNCTIONS ....................................................................................................................... 24
4.3 SETTING AND ADJUSTMENT ......................................................................................... 25
SEZIONE 5 MAINTENANCE AND SERVICE................................................................28
5.1 SAFETY DEVICES ............................................................................................................. 28
5.2 IMPROPER OPERATING PROCEDURES........................................................................ 29
5.3 TYPE OF FAILURES AND SERVICING ........................................................................... 29
5.4 MAINTENANCE.................................................................................................................. 29
5.5 SERVICING ........................................................................................................................ 30
All the instructions contained in this manual should be carefully read. They contain important instructions
regarding installation, use, maintenance and safety. Keep this manual for any further need of information.
The manufacturer cannot be held responsible for any damage due to improper, erroneous or irrational use.
NOTE

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SUPERCROMO Series
This manual is an integral and essential part of this product and must be given to the end user.
Qualified service engineers are those having specific technical experience in the installation of heating units
for residential applications, designated by a local authority.
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.
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 repair to the products must be carried out only by the manufacturer’s authorized service centers using only
original spare parts.
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.
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.
Qualified personnel must check:
•that 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.
•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.
•do not activate electric switches, telephones or any other object or device that may cause sparks.
•immediately open doors and windows to create drafts of air that purify the room.
•shut off gas supply.
•call for qualified servicing engineer.
1 GENERAL INSTRUCTIONS
BEFORE STRATING THE UNIT
WARNING: IF YOU SMELL GAS

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SUPERCROMO Series
1.1 PRODUCT DESCRIPTION AND MAIN OPERATING CHARACTERISTICS
The Supercromo gas heater, is an independent heating product with an isolated combustion chamber and
forced draught.
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 perimetral wall or close to it depending on the maximum extension of the coaxial pipe
system (see section 2 ”Installation”).
The operation principle of the Supercromo 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 3001, 3002, 4002, 5001, 5002, 8001 and 8002 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
4001 which is defined as ”static” since the convective motion is natural.
This is the reason why, for the correct operation of the unit, the grilles need to be free from clothes, newspapers
or any other object that may obstruct the flow of air.
Additionally, make sure that curtains, chairs and any other pieces of furniture are always placed at a minimum
distance of 300 mm from the unit. The operation of the unit is very simple and completely automatic thanks to
the thermostatic regulation and the programmable timer (standard equipment on models 3002, 4002, 5002 and
8002). The end user only needs to start the unit, choose the desired temperature (to be selected on the
thermostat) and, for models 3002, 4002, 5002 and 8002, 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 as
there is no risk of leakage of the combustion products.
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 3002, 4002, 5002 and 8002 grant a higher comfort thanks to an air humidifier placed on the left hand
side of the unit.
Additionally models 5002 and 8002 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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1.2 TECHNICAL DATA
DESCRIPTION U.M. 3001 3002 4001 4002
TYPE OF EQUIPMENT C13
UNIT CATEGORY II2H3+
NOMINAL HEAT INPUT1kW
kcal/h
2,58
2218
2,58
2218
3,25
2795
3,62
3116
NOMINAL HEAT OUTPUT kW
kcal/h
2,32
2000
2,32
2000
2,92
2511
3,26
2803
NOMINAL NOXVALUES mg/kW 56,4 56,4 75,8 97
MAXIMUM COMSUMPTION 1NATURAL GAS
L.P.G. G30
L.P.G. G31
m3/h
kg/h
kg/h
0,273
0,203
0,199
0,273
0,203
0,199
0,344
0,256
0,251
0,383
0,285
0,280
EFFICIENCY (NET) % 90%
FEEDING PRESSURE WITH INJECTORS DIAMETERS
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)
MASSIMA
NOMINALE
MINIMA
mbar
40
37
30
NOISE LEVEL (AT 3 METRES) dB(A) 33 33 32 33
INJECTORS DIAMETERS NATURAL GAS
L.P.G.
mm see Table 5 - Table 6
PRESSURE TO THE BURNER NATURAL GAS
MANIFOLD L.P.G. G30
L.P.G. G31
mbar
10
28,8
36,7
10
28,8
36,7
10,5
28,7
36,7
10,5
28,8
36,7
GAS CONNECTION (ISO 7/1) Rp 3/8
HOLE DIAMETER FOR INLET/OUTLET PIPE mm 50
POWER SUPPLY 230-240 V 50Hz single phase
WATTAGE W 45 45 20 45
MAX LENGTH COAXIAL PIPES m 1
WEIGHT kg 17 17 24 25
Table 1 – TECHNICAL DATA 3001, 3002, 4001 AND 4002
PERFORMANCE DATA IN FULL ACCORDANCE WITH EUROPEAN STANDARDS EN 1266
1 TERMAL OUTPUT AND GAS CONSUMPTION DATA ARE MISURED WITH FOLLOWING CONDITION BASING TO THE STANDARD prEN 437, :
GAS NATURAL: P.C.I. 34.02 MJ/m3 A 15ºC 1013.25 mbar
BUTAN GAS (G30): P.C.I. 45.65 MJ/kg
PROPAN GAS (G31): P.C.I. 46.34 MJ/kg

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SUPERCROMO Series
TECHNICAL DATA
DESCRIPTION U.M. 5001 5002 8001 8002
TYPE OF EQUIPMENT C13
UNIT CATEGORY II2H3+
NOMINAL HEAT INPUT MAX1kW
kcal/h
4,65
4000
5,23
4500
7,70
6590
7,70
6590
NOMINAL HEAT OUTPUT MAX kW
kcal/h
4,19
3600
4,71
4050
6,98
6000
6,98
6000
NOMINAL HEAT INPUT REDUCED1kW
kcal/h
---
---
3,60
3096
---
---
5,36
4610
NOMINAL HEAT OUTPUT REDUCED kW
kcal/h
---
---
3,18
2740
---
---
4,77
4100
NOMINAL NOXVALUES mg/kW 154 158 95,7 95,7
MAX/MIN COMSUMPTION1NATURAL GAS
L.P.G. G30
L.P.G. G31
m3/h
kg/h
kg/h
0,492
0,367
0,360
0,553/0,381
0,412/0,284
0,405/0,278
0,811
0,604
0,593
0,811/0,567
0,604/0,423
0,593/0,415
EFFICIENCY (NET) % 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. (G30)
MAX
NOMINAL
MIN
mbar
40
37
30
NOISE LEVEL (AT 3 METRES)
MAX
MIN
dB(A)
35
---
39
35
41
---
41
37
INJECTORS DIAMETERS NATURAL GAS
L.P.G.
mm see Table 5 - Table 6
PRESSURE TO THE BURNER MAX
CAPACITY NATURAL GAS
L.P.G. G30
L.P.G. G31
mbar
10
29
37
9
28
35,5
7,1
28,5
36,5
7,1
28,5
36,5
PRESSURE TO THE BURNER REDUCED
CAPACITY NATURAL GAS
L.P.G. G30
L.P.G. G31
mbar
---
---
---
5
14,7
19,7
---
---
---
4,0
14
18
GAS CONNECTION (ISO 7/1) Rp 3/8 Rp 1/2 Rp 3/8 Rp 1/2
HOLE DIAMETER FOR INLET/OUTLET PIPE mm 50
POWER SUPPLY 230-240 V 50Hz single phase
WATTAGE W 65 86 140 140
MAX LENGTH COAXIAL PIPES m 1 0,8
WEIGHT kg 26 26 42 42
Table 2 – TECHNICAL DATA 5001, 5002, 8001 AND 8002
1 SEE NOTE 1 PAGE 4

6Installation, Maintenance and User Manual - 10/2014
SUPERCROMO Series
Figure 1 – EXTERNAL DIMENSIONS AND INSTALLATION LIMITS FOR MODELS 3001 AND 3002
Figure 2 – EXTERNAL DIMENSIONS AND INSTALLATION LIMITS FOR MODELS 4001-5001 AND 4002-5002
2 INSTALLATION
10 cm 10 cm
10 cm 10 cm
Cod. IM14027 Cod. IM14107

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SUPERCROMO Series
Figure 3 – EXTERNAL DIMENSIONS AND INSTALLATION LIMITS FOR MODELS 8001 AND 8002
Installation of this appliance must be in accordance with international and nationals regulations in force and
carried out by qualified engineers following the instructions of the manufacturer.
The Supercromo fan convectors can be installed with coaxial flue with outlet on the installation wall (see Figure
4) or with separate flue (see Figure 5).
In case of separate flue installation, the use of approved pipes and components is required. Also when the
installation is being made a special attention to the pressure loss of each component must be carefully
evaluated since the total loss must be less than the maximum pressure loss allowed for the equipment (see
Table 3).
DESCRIPTION U.M. 3001
3002 4001 4002 5001 5002 8001 8002
PRESSURE LOSS ALLOWED FOR PIPE SYSTEM Pa 25 20 30 28 35 44
Table 3 – MAX PRESSURE LOSS ALLOWED FOR PIPE SYSTEM
In case of separate flue installation, if the flue is longer than 1,5 m use a on the pipe a flue for steam available
as accessories (see accessories list) . To reduce the steam, it is suggested to insulate the pipe with height
temperature resistant material.
10 cm 10 cm
WARNING
Cod. IM14079

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SUPERCROMO Series
Below is a table detailing the pressure loss values of bends and pipes with an internal diameter of 33 mm.
DESCRIPTION U.M.
3001
3002 4001 4002 5001
5002 8001 8002
AIR INTAKE PIPE INTERNAL DIAM 33 MM Pa/m 0,6 2 2 3 6
HORIZONTAL FLUE EXHAUST PIPE INTERNAL DIAM 33 MM Pa/m 1,5 2,2 2 3,6 11
VERTICAL FLOW EXHAUST PIPE INTERNAL DIAM 33 MM Pa/m 0,2 0,25 0,7 2 6
BEND FOR AIR INTAKE PIPE 90º Pa 0,6 2 2 3 6
BEND FOR FLUE EXHAUST PIPE 90º Pa 1 1,5 1,8 3,6 9
Table 4 – PRESSURE LOSS OF PIPES WITH INTERNAL DIAMETER 33 MM
Figure 4 - INSTALLATION WITH COAXIAL PIPES
Figure 5 - INSTALLATIONS WITH SEPARATE PIPES
Furthermore, the following conditions need to be checked:
1. The unit has to be installed on a perimetral wall taking into account the maximum distances shown in Figure
1 (for 3001 and 3002 models) in Figure 2 (for 4001, 4002, 5001 and 5002 models) and in Figure 3 (for 8001
and 8002 models). This is in order to have the necessary access space should it be required. The minimum
suggested bottom line from the floor is 50 mm or 130 mm depending on the model (see Figure 1, Figure 2
and Figure 3). The maximum installation distance should not exceed 350 mm. In case of installation over
this distance the distribution of heat in the room will not be uniform.
2. Keep the sides of the unit clear and free from any obstruction to allow the removal and repositioning of the
external casing (10 cm).
Max length = 1 m ( models 8001 and 8002 excluded,
their max L being =0.8 m)
Min length = 0.2 m
Total pressure loss allowed = see Table 4
Cod. IM14029
Cod. IM14017 Cod. IM14031