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Instruction sheet
1
PReMIse
1.1
QRCODE
1.2
AVAILABLE LANGUAGES
This document is originally written in Italian and English.
Any other languages are translations of this document.
For versions of this document in other languages, see
Robur website.
1.3
USE
Next-R series gas unit heaters.
2
WaRnInGs
For correct installation, please refer to the manual
included in the appliance and to these assembly
instructions.
Please read the warnings and operating instruc-
tions contained in these instructions carefully as
they provide important information regarding safe
installation, use and maintenance. Keep this sheet
carefully for further reference. The manufacturer
cannot be held responsible for any damage caused
by improper, erroneous or unreasonable use.
Installer's qualifications
Installation must exclusively be performed by a
qualified firm and by skilled personnel, with spe-
cific knowledge on heating, electrical systems and
gas appliances, in compliance with the laws in
force in the Country of installation.
The design, installation, operation and maintenance of
the systems shall be carried out in compliance with cur-
Cod.: D-FST455EN
Rev.: D
Gas chanGe
1.4
KEY TO SYMBOLS
DANGER
WARNING
NOTE
PROCEDURE
REFERENCE (to other document)
rent applicable regulations, depending on the Country
and location, and in accordance with the manufacturer's
instructions. In particular, regulations regarding the fol-
lowing shall be complied with:
Gas systems and equipment.
▶
Electrical systems and equipment.
▶
Heating systems.
▶
Environmental protection and combustion products
▶
exhaust.
Fire safety and prevention.
▶
Any other applicable law, standard and regulation.
▶
Any contractual or extra-contractual liability of the
manufacturer for any damage caused by incorrect
installation and/or improper use and/or failure to
comply with regulations and with the manufactur-
er's directions/instructions shall be disclaimed.
This operation must be curried in total safety. Be-
fore starting intercept the gas and disconnect the
power supply.
Next-R gas unit heater
Gas change
23MCLSDC024
09/11/2023
1
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Related Manuals for Robur Next R Series
Summary of Contents for Robur Next R Series
- Page 1 This document is originally written in Italian and English. NOTE Any other languages are translations of this document. For versions of this document in other languages, see PROCEDURE Robur website. REFERENCE (to other document) Next-R series gas unit heaters. WaRnInGs For correct installation, please refer to the manual...
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Page 2: Gas Changeover
Gas change Gas chanGeOVeR The operations described must only be carried After the gas changeover, check the combustion out by an authorised service centre. parameters as described in Paragraph 5 p. 5 . The following instructions apply to both the con- Check that the gas supply line is suitable for the version from natural gas (G20) to any other gas and new fuel type used to supply the unit. - Page 3 Instruction sheet Gas change Figure 3.1 Gas changeover for gas unit heater Gas supply pipe Gasket Nozzle O-ring Gas valve R60/R80 Figure 3.2 R15 Venturi replacement How to change gas (Figure 3.3 p. 4 ) 1. Cut off electric power and gas supply. 2.
- Page 4 Gas change Figure 3.3 Gas changeover for gas unit heater Gas supply pipe Gasket Fastening screws Gas flange O-ring Gasket Nozzle Gas valve E F G sUPPLY Gas PRessURe This appliance is equipped for a maximum gas ± 15%. supply pressure of 50 mbar. Non compliant gas pressure may damage the ap- The appliance's gas supply pressure, both static and dy- pliance and be hazardous.
- Page 5 Instruction sheet Gas change 3B/P The appliance gas supply pressure, both static and dynamic, must comply with the values in the Table, with a tolerance of ± 15%. cOMBUsTIOn PaRaMeTeRs checK Paragraph reserved exclusively to TACs. terminals). The gas unit heater is supplied with the gas valve R15/R20/R30/R40/R50 already calibrated with respect to the fuel indi- cated on the sticker next to the gas connection.
- Page 6 Gas change (C) of the gas valve. Figure 5.1 Gas valve 16. Close the thermoformed door. If the check is not successful: 17. Repeat steps 8 to 11 to reactivate the minimum power operation; verify once again and, if necessary, correct the CO value in these conditions by actuating the off- set adjustment screw.
- Page 7 Instruction sheet Gas change Table 5.3 R30 gas valve setting table Screw pre-adjustment CO₂ percentage in flue gases Gas network pressure Throttle Offset Minimal heat input Nominal heat input Type mbar turns turns -6 ½ -3 ¾ full open -3 ¾ G25.1 -13 ½...
- Page 8 Gas change type used. Otherwise, set CO percentage value using Table 5.7 R80 gas valve setting table the offset adjustment screw. Screw 10. Close contact 27 (L-C terminals), or act on the power pre-adjust- CO₂ percentage in flue gases ment network level control device to force gas unit heater operation pressure Minimal heat...
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