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User interface
- RESET, STAND-By, SUMMER/WINTER, SUMMER and ANTI-FREEZE function selector
- CH temperature switch (35 -78°C)
- DHW temperature switch for models C and R equipped with external cylinder and NTC temperature probe (35 - 57°C)
- Leds indicating water temperature
- Water pressure gauge
- Lights indicating:
• Mains power connection
• Flame presence
• Burner shut-down
• Burner shut-down due to overheating
• Burner shut-down due to incorrect flue draught (models TN)
• Burner shut-down due to flue pressure switch intervention (models TFS)
• Low water pressure
• CH or DHW temperature probe fault
• Remote control connection fault
Operating characteristics
- CH mode electronic flame modulation, timer-controlled flame rising ramp (50 seconds)
- DHW mode electronic flame modulation, timer-controlled flame rising ramp (for models C and R equipped with external cylinder and NTC
temperature probe)
- DHW priority function
- CH flow anti-freeze function (ON: 5°C, OFF: 30°C or after 15 min. operation)
- DHW flow anti-freeze function (ON: 5°C, OFF: 10°C or after 15 min. operation; for models C and R equipped with external cylinder and NTC
temperature probe)
- External boiler anti-freeze function (ON: 5°C, OFF: 10°C or after 15 min. operation; only for model R equipped with external cylinder and NTC
temperature probe)
- “Anti–Legionnaires’ disease ” function (only for model R equipped with external cylinder and NTC temperature probe)
- Timer-controlled “chimney sweep” function (15 minutes)
- Flame propagation function during ignition
- CH max heat output adjusting trimmer
- Ignition heat output adjusting trimmer
- Timer-controlled room thermostat (240 seconds when CH flow temperature > 40°C)
- Pump post-circulation function in CH, anti-freeze or chimney sweep mode (180 seconds)
- Pump post-circulation function in DHW (30 seconds)
- CH temperature post-circulation function: > 85°C: 30 seconds
- Safety post-circulation function (ON: 95°C; OFF: 90°C – models TFS)
- Pump and deviating valve anti-locking function (180 seconds operation after 24 hours of boiler inactivity)
- Can be connected to a room thermostat (optional)
- Can be connected to an external temperature probe (optional supplied by the Manufacturer)
- Can be connected to an
Open Therm
remote control (optional supplied by the Manufacturer)
- Can be connected to a cylinder timer connection (only for model R equipped with external cylinder and NTC temperature probe)
