User Manual
Wall Hung Boiler with D.H.W. Storage Cylinder Low Nox – Cod. 99881NA – July 2001
II
Turning on procedure for electronic
ignition (only for U.k. and Ireland):
#
turn on the gas cock situated under the boiler grill;
#
turn selector switch 1 to the
!
symbol denoting winter (see fig.2);
#
make sure that 6 light is ON (see fig. 2 pag. I) and the no.15 or no.16 lights are ON (see fig. 2 pag. I); if light no.14 flashes, it
means water deficiency in the system: open the tap on the filling loop and fill the system
until a pressure of 1.5 bar has been
reached (light no.16 ON; see fig. 2 pag. I) and then close the tap.
#
The automatic ignition system will turn the burner on.
It may be necessary to repeat the procedure a few times to purge air from the pipes. To repeat the ignition procedure press
release button 2 (see fig. 1 pag. I) and then try the ignition procedure once again. If the boiler does not start, press the reset
button (see fig. 1 pag. I).
IMPORTANT
should the boiler fail to ignite wait 3 minutes before pressing button again.
If locking-out persists, turn boiler OFF and call an authorised service engineer.
Turning off boilers with electronic ignition :
#
turn selector switch 1 to the OFF position;;
#
if the boiler will not be used for long periods it is recommended that the gas cock under the boiler grill be shut off.
THE BOILER IN USE
Summer-winter use (see fig. 1 pag.
I
).
#
turn the selector switch 1 to the
!
program to operate the boiler in the WINTER position for both heating and hot water;
#
turn the selector switch 1 to the
"
program to operate the boiler in the SUMMER position for just hot water;
#
if the system has a room thermostat, set this to the temperature required (the law states 20°C).
REGULATING THE HEATING TEMPERATURE
The heating temperature is regulated by turning knob 3 (see fig. 1 pag.
I
).
#
turn it counter-clockwise to lower the temperature.
#
turn it clockwise to raise the temperature.
#
the temperature range can be adjusted from a minimum of 30°C to a maximum of 80°C.
REGULATING THE HOT WATER TEMPERATURE
The hot water temperature is regulated by turning knob 4 (see fig. 1 pag.
I
).
#
turn it counter-clockwise to lower the temperature
#
turn it clockwise to raise the temperature
#
the temperature range can be adjusted from a minimum of 35°C to a maximum of 60°C.
WARNINGS FOR THE USER
To keep the boiler in efficient and safe operating condition, carefully follow the instructions listed below:
#
Have normal maintenance performed at least once a year by one of our authorised service centres (a fee will be charged),
combustion tests are necessary every two years and should again be carried out by a qualified Radiant technician (in
accordance with D.P.R. 412 regulations, 26-08-93).
#
Periodically check system pressure on the pressure gauge and check that pressure is between 0.5 - 1.5 bar with the system
cold.
#
Do not clean the casing or internal parts of the boiler with reducing agents or solvents. Clean only with soap and water.
#
Never leave flammable materials in the immediate vicinity of the boiler.
#
For greater comfort and more rational use of heat, it is advisable to install a room thermostat connected to a clock timer to
turn the boiler on and off during the course of the day or week (in accordance with D.P.R. 412 regulations, 26-08-93).
#
The boiler is equipped with an anti-freeze system, which is operative with switch 1 in either SUMMER
"
or WINTER
!
position, even if the room thermostat is set at zero, as long as there is electrical power and gas feed.
FLUE SAFETY
Natural draft boilers are equipped with a device that controls correct evacuation of exhaust fumes. This device guarantees
maximum safety during operation. If the flue is partially or completely obstructed, or if its section is insufficient for evacuation of
exhaust fumes, the device will intervene and block the flow of gas to the main burner and to the pilot light, turning off the boiler.
If this occurs, contact an authorised technician , close the gas tap and turn electrical mains off.
Do not tamper with the device in any way.
Summary of Contents for RMA
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