Skip to content
Contact us
Literature

Next-G Series

Modulating wall-mounted condensing gas unit heater

The best value-for-money heating solution available thanks to condensation.

Next-G Series

Benefits

  • Up to 106% thermal efficiency with savings of up to 25% compared to alternative systems thanks to condensation.
  • Heat is quickly available in 30 minutes–even in the largest rooms.
  • It features the latest-generation electronics with advanced management functions as well as the possibility of centralised and remote management.
  • Greater comfort thanks to the heat output (from 100% to 30%) and modulation.
  • Reduced CO and NOx emissions thanks to an optimal air-to-gas ratio of the premix burner.
  • Also available with brushless fans to guarantee better comfort, noise reduction and reduced electricity consumption.
  • Safety and reliability with Type C certification. The combustion circuit is completely isolated from the installation environment and the combustion air is taken from outside, leaving the oxygen present in the rooms untouched.
  • Certified for operation with hydrogen mixtures up to 20%.

Versions

NEXT-G

A range of modulating heat output condensing gas unit heaters with fixed air flow AC fans.

NEXT-G EC

An extended series of condensing gas unit heaters modulating both the heat output and ventilation, equipped with electronically controlled fans. This model gives you:

  • lower noise levels
  • lower energy consumption
  • constant outlet air Delta T
  • fixed or modulating air flow

NEXT-G C

A range of modulating heat output condensing gas unit heaters with centrifugal fixed air flow fans.

Applications

Ideal for efficiently heating workshops, industrial, and commercial buildings. The system’s modularity makes it perfect for places where no flammable materials are present.

Technical table

NEXT-G

Heat output Next-G 30: nominal kW 27.4 - minimum kW 9.9
Heat output Next-G 45: nominal kW 41.4 - minimum kW 14.5
Heat output Next-G 60: nominal kW 56.6 - minimum kW 19.5
Heat output Next-G 90: nominal kW 87.3 - minimum kW 28.6

Efficiency Next-G 30: nominal heat input 97.8% - minimal heat input 106.8% 
Efficiency Next-G 45: nominal heat input 96.2% - minimal heat input 105.3%
Efficiency Next-G 60: nominal heat input 97.5% - minimal heat input 105.2%
Efficiency Next-G 90: nominal heat input 97.0% - minimal heat input 106.1%

Air flow - nominal (ΔT = 15 °C)  Next-G 30: max. 2,450 m3/h
Air flow - nominal (ΔT = 15 °C)  Next-G 45: max. 3,450 m3/h
Air flow - nominal (ΔT = 15 °C)  Next-G 60: max. 5,660 m3/h
Air flow - nominal (ΔT = 15 °C)  Next-G 90: max. 9,100 m3/h

Electrical power absorption Next-G 30: kW 0.21
Electrical power absorption Next-G 45: kW 0.35
Electrical power absorption Next-G 60: kW 0.61
Electrical power absorption Next-G 90: kW 1.00

Ambient air temperature (minimum/maximum): 0/40 °C

Flue gas exhaust - diameter (Ø): mm 80

Combustion air intake connection - diameter (Ø): mm 80

NEXT-G C

Air flow Next-G 30 C: at maximum available head: m3/h 2,500 - free blowing: m3/h 3,500
Air flow Next-G 60 C: at maximum available head: m3/h 5,400 - free blowing: m3/h 6,500

Maximum useful pressure head Next-G 30 C: Pa 140
Maximum useful pressure head Next-G 60 C: Pa 120

Minimum pressure drop on heat flow delivery: Pa 0

NEXT-G EC

Heat output Next-G 20 EC: nominal kW 19.0 - minimum kW 8.5
Heat output Next-G 30 EC: nominal kW 27.4 - minimum kW 9.9
Heat output Next-G 35 EC: nominal kW 33.4 - minimum kW 13.1
Heat output Next-G 45 EC: nominal kW 41.4 - minimum kW 14.5
Heat output Next-G 60 EC: nominal kW 56.6 - minimum kW 19.5
Heat output Next-G 75 EC: nominal kW 72.0 - minimum kW 26.2
Heat output Next-G 90 EC: nominal kW 87.3 - minimum kW 28.6


Efficiency Next-G 20 EC: nominal heat input 97.5% - minimal heat input 105.5% 
Efficiency Next-G 30 EC: nominal heat input 97.8% - minimal heat input 106.8%
Efficiency Next-G 35 EC: nominal heat input 96.9% - minimal heat input 106.5%
Efficiency Next-G 45 EC: nominal heat input 96.2% - minimal heat input 105.3% 
Efficiency Next-G 60 EC: nominal heat input 97.5% - minimal heat input 105.2%
Efficiency Next-G 75 EC: nominal heat input 96.0% - minimal heat input 105.0%
Efficiency Next-G 90 EC: nominal heat input 97.0% - minimal heat input 106.1%

Air flow - nominal (ΔT = 15 °C)  Next-G 20 EC: max. 2,300 m3/h
Air flow - nominal (ΔT = 15 °C)  Next-G 30 EC: max. 2,450 m3/h
Air flow - nominal (ΔT = 15 °C)  Next-G 35 EC: max. 2,735 m3/h
Air flow - nominal (ΔT = 15 °C)  Next-G 45 EC: max. 3,450 m3/h
Air flow - nominal (ΔT = 15 °C)  Next-G 60 EC: max. 5,650 m3/h
Air flow - nominal (ΔT = 15 °C)  Next-G 75 EC: max. 5,400 m3/h
Air flow - nominal (ΔT = 15 °C)  Next-G 90 EC: max. 9,100 m3/h


Electrical power absorption Next-G 20 EC: kW 0.19
Electrical power absorption Next-G 30 EC: kW 0.19
Electrical power absorption Next-G 35 EC: kW 0.18
Electrical power absorption Next-G 45 EC: kW 0.39
Electrical power absorption Next-G 60 EC: kW 0.41
Electrical power absorption Next-G 75 EC: kW 0.39
Electrical power absorption Next-G 90 EC: kW 0.75


Ambient air temperature (minimum/maximum): 0/40 °C

Flue gas exhaust - diameter (Ø): mm 80

Combustion air intake connection - diameter (Ø): mm 80

Controllers

1-Key basic control

1-Key basic control

1-Key basic control + Digital programmable chronothermostat

1-Key basic control + Digital programmable chronothermostat

Thermoregulator + Centralised chronothermostat

Thermoregulator + Centralised chronothermostat

1-Key basic control + Room thermostat

1-Key basic control + Room thermostat

2-Key basic control + Room thermostat

2-Key basic control + Room thermostat

2-Key basic control + Digital programmable chronothermostat

2-Key basic control + Digital programmable chronothermostat

Thermoregulator

Thermoregulator

Thermoregulator + Genius software

Thermoregulator + Genius software

Touch screen remote control

Touch screen remote control

Modbus

Modbus

Final user literature

ISO 9001 certificate | All products

  • German (DE)
  • English (EN)
  • Italian (IT)

CE certificate | Next-G Series

  • German (DE)
  • English (EN)
  • Italian (IT)

Declaration of Conformity | Next-G Series

  • English (EN)

Company profile | All the products

  • English (EN)
  • Italian (IT)

Product brochure | Next-R Series, Next-G Series, M Series

  • English (EN)
  • Italian (IT)

Installation, use and maintenance manual | Next-G Series

  • German (DE)
  • English (EN)
  • French (FR)
  • Italian (IT)
  • Dutch (NL)

Professional user literature

ISO 9001 certificate | All products

  • German (DE)
  • English (EN)
  • Italian (IT)

CE certificate | Next-G Series

  • German (DE)
  • English (EN)
  • Italian (IT)

SVGW-SSIGE Certificate | Next-G Series

  • German (DE)
  • English (EN)

Design manual | Next-R Series, Next-G Series, M Series

Section A01 - Definitions and general concepts

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

Section B - Index

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

Section B01 - G Series Heater

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

Section B02 - K Series Heater

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

Section C01 - Index

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

General index

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.01 Section - Sizing criteria

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.02 Section - Flue gas collection

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.03 Section - Flue accessories

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.04 Section - Adjustment and control

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.05 Section - Support brackets

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.06 Section - Vertical grilles

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.07 Section - Air ducting

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.08 Section - Fan characteristics

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.09 Section - Installation criteria

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.10 Section - Gas supply

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.11 Section - First start-up

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.12 Sections - Maintenance

  • English (EN)
  • Italian (IT)

Design manual | Next-R Series, Next-G Series, M Series

C01.13 Section - ErP

  • English (EN)
  • Italian (IT)

Design manual | Next-G Series

B05 Section - Next-G

  • English (EN)
  • Italian (IT)

Declaration of Conformity | Next-G Series

  • English (EN)

Company profile | All the products

  • English (EN)
  • Italian (IT)

Product brochure | Next-R Series, Next-G Series, M Series

  • English (EN)
  • Italian (IT)

Installation, use and maintenance manual | Next-G Series

  • German (DE)
  • English (EN)
  • French (FR)
  • Italian (IT)
  • Dutch (NL)

1344 kW of renewed confidence with new condensing heaters

1344 kW of renewed confidence with new condensing heaters
  • Customer C.M.S. S.p.A.
  • Products Next-G Series
  • Application Industry

Heating of a wide surface used as municipal food market

Heating of a wide surface used as municipal food market
  • Customer Central Market Stara Zagora
  • Products Next-G Series
  • Application Tertiary

The flexible range to serve the different needs of production area, warehouse and offices

The flexible range to serve the different needs of production area, warehouse and offices
  • Customer Elio Cavagna s.r.l.
  • Products GAHP A, Next-G Series, Caldaria Condensing+
  • Application Industry

Environmental sustainability and efficiency in an industrial structure heated by hanging generators and offices that are air-conditioned with heat pumps

Environmental sustainability and efficiency in an industrial structure heated by hanging generators and offices that are air-conditioned with heat pumps
  • Customer Remer Group
  • Products Next-G Series, GAHP AR
  • Application Industry

Environmental sustainability was the reason for choosing gas-fired heat pumps in an international holding company

Environmental sustainability was the reason for choosing gas-fired heat pumps in an international holding company
  • Customer PMP Industries
  • Products Next-G Series, GAHP AR
  • Application Industry

Natural gas rooftop generators to heat an industrial environment with the best cost-benefit ratio

Natural gas rooftop generators to heat an industrial environment with the best cost-benefit ratio
  • Customer Pratic
  • Products Next-G Series
  • Application Industry

Hanging condensing heaters in production, heat pumps in the offices of a company from Bergamo

Hanging condensing heaters in production, heat pumps in the offices of a company from Bergamo
  • Customer MI Metal Bramati Srl
  • Products Next-G Series, GAHP AR
  • Application Industry