ALKON 140 EXT - Condensing Commercial Boilers

Condensing modular boiler, both for indoor and outdoor installation IP X5D, with double premix Low NOx burner and double heat exchanger in Al/Si/Mg alloy, also for installation in battery
Output range: from 115 to 560 kW (in battery)

  • Operation logic based on the power repartition on 2 modules, up to the minimum possible load (10.5+10.5 kW) for the obtainment of the maximum efficiency. Below a heat request of 21 kW one module is turned off and the second one modulates from 21 kW down to 10,5 kW.
  • Output 10.5 to 136 kW and modulation ratio of 1:13
  • Two safety gas valve with constant air-gas ratio
  • Two high head fans with electronic speed control
  • Burner radiating flame surface in “metallic sponge”.
  • Siphon on the condensates drain
  • Electrical predisposition for connection of additional safety devices
  • Predisposition for control with 0-10 Volt signal through BCM
  • Complete diagnostics of the functions with signaling of the possible blocks
  • Sliding temperature operation
  • NTC sensors for the control of flow and return temperature
  • Electronic ignition
  • Multilevel programming, visualization of parameters on LCD and e-Bus communication (HSCP)
  • Two high efficiency modulating pumps (one for each module) with antifreeze, pump antijamming and over-run functions.
  • Minimum installation water pressure switch
  • Optional hydraulic groups including:
    – Connection pipe for predisposition of additional safety devices and accessories
    – Differential pressure switch for water circulation control
    – Hydraulic separator (mixing header)
  • Panel board (standard supplied)
  • Thermo-regulation HSCP (Master), water pressure gauge and system “On/Off” switch
  • It is possible the control of up to a maximum of 12 completely
  • independent heating circuits and of a DHW storage tank
  • Anti-legionella function
  • n°1 SHC controller standard supplied:
    – Programmable PCB for management of up to 3 installation circuits and therefore up to 12 heating circuits
    – It has 2 entries, for external and room temperature sensors