Fondital LINE Tech, Инструкция по установке, эксплуатации и обслуживанию

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2. Technical features and dimensions
2.1. Technical features
The boiler is equipped with a fully pre-mixed gas burner. The following models are available
KB 24 condensing boiler with sealed chamber and forced draught, supplying CH water and instant DHW with Aqua Premium system,
heat output 23.7 kW
KB 28 condensing boiler with sealed chamber and forced draught, supplying CH water and instant DHW with Aqua Premium system,
heat output 26.2 kW
These boilers meet all the requirements in the country of destination indicated on the rating plate.
Installation in a different country may cause a hazard for people, animals and property.
The main technical features of the boiler are given below.
Construction characteristics
- IPX4D electrically protected control panel
- Electronic safety board and integrated modulation
- Electronic ignition with separate igniter and ionization flame
detector
- Stainless steel, fully pre-mixed burner
- Mono-thermal, high efficiency, composite and stainless steel
heat exchanger with air purging device
- DHW stainless steel plate heat exchanger
- Twin shutter, modulating gas valve with constant air/gas ratio
- Modulating, electronically managed flue gas discharge fan
- 3-speed CH pump with built-in deaerator
- DHW pump
- Safety flow-switch, preventing operation with water circulation
malfunction in the CH system
- DHW, CH and storage tank temperature probes
- Safety limit thermostat
- Flue gas thermostat
- Integrated, automatic by-pass
- 10 liter expansion vessel
- System loading and draining taps
- Motorized switching valve
- DHW priority flow switch
Operating features
- CH electronic flame modulation with timer-controlled rising
ramp (50 seconds)
- DHW electronic flame modulation
- DHW priority function
- CH flow anti-freeze function (ON 5°C; OFF 30°C or after 15
minutes of operation)
- DHW anti-freeze function (ON 5°C; OFF 10°C or after 15 minutes
of operation)
- Storage tank anti-freeze function (ON 5°C; OFF 10°C or after 15
minutes of operation)
- Anti-legionella function
- Timer-controlled chimney-sweep function (15 minutes)
- Ignition flame propagation function
- CH maximum heat input adjusting trimmer
- Ignition heat input adjusting trimmer
- Timer-controlled room thermostat (240 seconds with CH flow
temperature >40°C)
- Heating pump post-circulation function in CH, ANTI-FREEZE and
CHIMNEY-SWEEP mode (180 seconds)
- Pump post-circulation function in DHW mode (30 s)
- Post-circulation function for CH temperature >85°C (30 seconds).
- Post-ventilation safety function (ON 95°C; OFF 90°C).
- Pump and switching valve anti-blocking function (180-seconds’
operation after 24-hours’ of non operation).
- Ready for connection to a room thermostat (optional)
- Ready for operation with an external probe (optional, supplied
by the manufacturer)
- Ready for operation with an OpenTherm remote control
(optional, supplied by the manufacturer)
User interface
- Liquid crystal display showing the boiler operating status
- Mode selector: OFF, RESET, WINTER, SUMMER and ANTI-FREEZE
- CH water temperature regulator: 20-78°C (standard range) or 20-
45 °C (reduced range)
- DHW water temperature regulator: 35-57°C
- Water pressure gauge