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The NC-3000 wall-mounted gas convector you have chosen is a product of
unbeatable quality that will provide you with warmth and comfort during the
winter.
In this information we offer you the main features of the convector as well as
the operations that are necessary for its correct performance and proper
maintenance.
We are at your disposal to help solve any problem that may arise.
Main features
Heat output : 2,600 kcal/h (3.02kW)
Gas input rate, m3/h*
Natural gas 0,39
* At 15ºC and 1013 m bar
Operation
Ignition
- Open the stop cock installed in the gas line before the convector.
- Open the two doors in the casing to gain access to the gas valve (1) and
the inspection window (2).
- Turn the temperature selector knob (3) until the arrow points to the H
position and press it in fully for about 15 or 20 seconds.
- Actuate the press-button (4) of the piezoelectric ignition until the pilot flame
appears. (Check it through the inspection window).
- Keep pressing the knob (3) for about 10 to 15 seconds, then gradually
release it*.
* After long periods of non-use, the pilot flame may go out, due to entrained air in the
system;inthiscasethelightingoperationshouldberepeateduntiltheflamestabilises.
- Turn the knob (3) until the arrow points to number 3 on the dial graduated
from1 to6. The mainburner shouldlight up.(Check itthrough theinspection
window).**
** Sometimes the main burner does not light up even when the arrow on the knob
points to number 6 (maximum output). This can be due to too high an indoor
temperature.
- Close the casing door situated in front of the inspection window.
- Point the arrow on the knob (3) to the number that gives a comfortable
temperature. To increase the temperature turn the knob anti-clockwise,
and clockwise to reduce it.
Shut-down
- Turn the knob (3) until the arrow points to the shutting down position · and
press fully.
When a short shut-down period is anticipated, the arrow can be left pointing
to the H position and later to the appropriate number on the dial.
- Close the casing door situated in front of the gas valve.
Important:
The convector cannot be re-lighted immediately after shutting down. To do
it, you must wait about two or three minutes.
Cleaning
General cleaning should be done by specialised personnel whenever
necessary, but at least once a year. In this section we point out the most
usual operations.
- Regularly remove dust from the outside surface of the casing.
- Whenever necessary, but at least once a year, remove dirt deposited on
the outside of the combustion chamber. To do this, proceed as follows:
- Place the metal pieces of the lower rear part of the casing in a vertical
position.
- Lift the casing -resting on the convector- about 3cm and withdraw it.
- Clean the combustion chamber and the glass of the inspection window.
Cleaning the main burner
- Close the stop cock installed in the gas line before the convector.
- Remove the casing that covers the convector.
- Unscrew the coupling nuts (5) and (6) and remove the burner gas supply
line (7) from the unit.
- Undothe fourscrews (8) that fasten the plate (9) tothecombustion chamber.
- Remove the main burner (10), jointlywith the plate(9), fromthecombustion
chamber.
- Move back the two ceramic rods (11) resting on the brackets (12).
- Clean the burner with a wire brush.
- Carry out the operations in reverse order.
- Check the gas-tightness of the gas circuit and air-grille system.
GB - Refit the casing. The rear part of the upper edge of the side protection (13)
should be immobilized on the corresponding piece under the top casing
panel.
- Position the metal pieces of the lower rear part of the side casing panels
horizontally to prevent the casing from tilting forward.
Maintenance
Some minimum periodical tasks are indispensable (whenever it is necessary,
butatleastbeforeeachheatingperiod) topreserve thequality ofthe convector
and keep it in good working order. These tasks require the intervention of
qualified personnel and so should be entrusted to your Installer.
Gas valve
- Closethegas stopcock, unscrewthe differentcouplingnuts anddisconnect
the gas supply lines to the convector, to the main burner (7), to the pilot
flame (15) and the capillary tube (16) of the thermocouple (16) from the
gas valve (14).
- Disconnect the spark plug cable (17) from the valve and remove the
thermostat bulb (18) from its holders.
- Remove the screws that fix the valve to the convector.
- Detach the side covers of the valve by removing the four fixing screws
from each.
- Change the gas filter and lubricate the moving parts with KRAFFT
MOLICOTE grease.
- Carry out the operations in reverse order.
- Remove the cover (19) by undoing the central screw (20).
- Removetheupper cover(21) of thevalve byundoingthethreefixing screws
(22).
- Change the main gas filter.
- Carry out the operations in reverse order.
Changing the main nozzle
- Unscrew the coupling nuts (5 and 6) and remove the burner gas supply
pipe (7) from the convector.
- Remove the union screws and detach the positioning plate (23) from the
burner holder plate (9).
- Remove the hex nut (24) from its housing.
- Unscrew the main nozzle from the head of the nut (24) and replace it with
an appropriate one.
- Carry out the operations in reverse order.
Changing the low-delivery nozzle
- Remove the plastic cap (25) from the gas valve.
- Unscrew the low-delivery nozzle head (26) and remove it from its housing.
- Replace the nozzle with an appropriate one, refit it and replace the plastic
cap (25).
Changing the pilot nozzle
- Undo the fixing screws (27) that hold the supporting plate (28) for the pilot
assembly, thermocouple and spark-plug to the combustion chamber.
- Unscrew the coupling nut (29) from the gas supply pipe (15) to the pilot.
- Remove the pilot nozzle (30) from its housing.
- Replace the pilot nozzle with an appropriate one.
- Carry out the operations in reverse order.
CE Marking
The products listed in this document comply with the European Directive
90/396/EEC for Gas Appliances. Wall-mounted Convector NC-3000.
