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GENERAL
1 .3 Product description
RESIDENCE COLONNA CONDENS SOLAR boilers are high ef-
ficiency, low temperature boilers for the production of
hot water for central heating and domestic hot water
systems. They incorporate a 200 litre double coil solar
storage cylinder and are equipped as standard with
a water return group for use in conjunction with so-
lar panels. RESIDENCE COLONNA CONDENS SOLAR boilers
incorporate a low water content, low pressure drop,
compact, monobloc, aluminium heat exchanger, and a
premixed microflame burner controlled by an electronic
control panel, all enclosed within a robust free-stan-
ding casing. They feature sealed combustion chambers
and, depending on what flue accessories are fitted, can
be classed as B23P , B53P , C13, C23, C33, C43, C53, C63 or
C83 appliances. The fan extracts flue gases and aspira-
tes comburent air from outdoors, and is continuously
controlled by the electronic control card.
The characteristics of the heat exchanger and burner
ensure an excellent level of performance.
The combustion chamber and the heat exchange area
are designed to keep temperature low over the burner
surface, thus minimising emissions, maximising com-
bustion efficiency and improving ignition reliability.
RESIDENCE COLONNA CONDENS SOLAR boilers come com-
plete with safety valves, vent and bleed valve, expan-
sion vessels, drain cocks, system fill cock and pumps for
the central heating circuit, storage cylinder and solar
collector circuit.
More than one high or low temperature zone can be
heated, with the addition of the relevant multi-zone
accessories. See the r catalogue for details.
1 .4 Safety devices
RESIDENCE COLONNA CONDENS SOLAR boilers are equipped with the following main safety devices:
− autodiagnostics with display of error codes
− microprocessor control and display of NTC sensor
continuity
− 3-way valve anti-block function, activated auto-
matically after 24 hours from last movement
− pump anti-block function, activated automa-
tically for 30 seconds, 24 hours after last pump
cycle
− ionisation flame control device for shutting off
gas supply in case of flame failure
− pressure transducer to prevent ignition in case of
low water pressure (with error display)
− maximum temperature thermostat to detect
overheating and ensure the safety of the entire
system (with error display requiring reset by OFF-
RESET button)
− flue gas temperature sensor to shut down the
burner if flue gas temperature exceeds the safety
threshold
− condensate drain siphon with float system to
prevent the escape of fumes
− condensate level sensor to shut down the bur-
ner if the condensate level in the heat exchanger
exceeds the safety threshold
− flue gas venting safety system incorporated in
the pneumatic functioning system of the gas
valve
− overtemperature diagnosis with double sensor
on central heating flow and return (temperature
threshold 85°C)
− fan control with Hall effect speed sensor: fan
The
main
technical
RESIDENCE COLONNA CONDENS SOLAR boilers are:
− electronic burner ignition and ionisation flame
control
− continuous electronic flame modulation for do-
mestic hot water and central heating water
− microprocessor control card for input and output
control and alarm management
− pneumatic control of air-gas ratio
− 3-way valve with electric actuator
− thermostatic valve
− water pressure switch
− digital display for temperature and error codes
− buttons for OFF-reset, alarm reset, and comfort
functions
− domestic hot water and central heating water
temperature controls
− system filling cock
− central heating circuit pressure gauge
− 8 litre domestic hot water circuit expansion ves-
sel
− 12 litre central heating circuit expansion vessel
− 18 litre solar circuit expansion vessel
− DC fan controlled by Hall effect speed sensor
− high head pump fitted as standard
− automatic bypass for central heating circuit
− 2 NTC sensors for control of flow and return tem-
peratures
− central heating flow temperature range adjusta-
ble between 20 and 80°C
− 200 litre double coil solar storage cylinder
− water return group complete with flow regulator,
solar circuit fill/drain cocks and non-return valve
− solar controller for control of solar circuit and do-
mestic hot water production.
speed is continuously monitored
− first level of frost protection (for indoor systems)
functional even with the boiler in standby, acti-
vated when water temperature drops below 7°C
− 3 bar central heating circuit safety valve.
− 8 bar domestic hot water circuit safety valve
− 6 bar solar circuit safety valve
− diagnosis of primary heat exchanger with clea-
ning needed display
− circulation diagnosis by comparison of readings
of central heating flow and return temperature
sensors
− solar collector/storage cylinder cooling protection
− solar circuit pump anti-block function.
9
The intervention of a safety device indicates a po-
tentially dangerous malfunction in the system, and
means that you must contact r's Technical Assistan-
ce Service immediately.
0
Never start the boiler up even for a short period if
the safety devices are not functioning correctly or
have been tampered with.
9
Safety devices must only be replaced by r's Tech-
nical Assistance Service using original spare parts.
Always check that the boiler is functioning correctly after
any repairs.
6
characteristics
of
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