Fondital KR 55, Инструкция по установке и использованию

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2. Technical features and dimensions
2.1. Technical features
The boiler is equipped with a fully pre-mixed gas burner. All models are equipped with electronic ignition and an ionization flame
sensing device.
The following models are available:
KR 55: condensing boiler with sealed chamber and forced draught, supplying CH water, 55kW
KR 85: condensing boiler with sealed chamber and forced draught, supplying CH water, 85kW
The boilers meet applicable laws in force in the country of destination, which is stated on the rating plate.
If the boiler is installed in a country other than the one specified, it may be dangerous for people, animals and objects.
The main technical features of the boilers are listed below:
Construction features
- IPX4D electrically protected control panel
- Electronic safety board and integrated modulation
- Electronic ignition via separate igniter and ionization flame detection
- Stainless steel, fully pre-mixed burner
- Stainless steel mono-thermal, high-efficiency heat exchanger
with deaerator
- Twin shutter, modulating gas valve with constant air/gas ratio
- Electronically-controlled modulating flue gas discharge fan
- Three-speed pump with built-in deaerator
- Air separator with deaerator
- Differential pressure switch, preventing incorrect water circulation
in the CH system
- Minimum flow switch detecting no water in the CH system.
- CH temperature probe
- Safety thermostat
- Flue gas thermostats
- Filling tap
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: 35-65°C (if connected to a
water heater)
- Water pressure gauge
Operating features
- Electronic flame modulation in CH mode with timer-controlled
rising ramp (50 seconds)
- Flow anti-freeze function: ON at 5°C; OFF at 30°C or after 15
minutes of operation if CH temperature >5°C.
- Water heater anti-freeze function (if connected to a separate wa
ter heater): ON at 5°C; OFF at 10°C or after 15 minutes of opera
tion if water temperature in the heater >5°C.
- Anti-legionella function (if connected to a separate water heater
with an NTC 10 kΩ @ ß=3435 probe.
- Timer-controlled chimney-sweep function: 15 minutes
- Ignition flame propagation function
- Timer-controlled ambient thermostat: 240 seconds with flow
temperature >40°C
- Pump post-circulation function in CH, anti-freeze and chimney-
sweep modes
- Post-ventilation safety function: ON at 95°C, OFF at 90°C.
- Pump anti-shutdown function: 180-second operation after 24
hours of boiler inactivity
- Provision for connection to a ambient thermostat (optional)
- Provision for operation with an external probe (optional, supplied
by the manufacturer)
- Provision for operation with an OpenTerm remote control (optio
nal, supplied by the manufacturer).