Westen Boyler Condens 24, Instruction Manual For Users And Fitters

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7107919.02 (1-09/13)
11.1 CONNECTING THE ROOM THERMOSTAT
To connect the Room Thermostat to the boiler, proceed as described below:
• switch off the boiler;
• access the terminal block
M1
;
• remove the jumper from the ends of contacts 1-2 and connect the wires of the Room Thermostat;
• switch on the boiler and make sure the Room Thermostat works correctly.
Put back the jumper on terminals 1-2 of boiler terminal block M1 if the ambient thermostat is not used or if the wall-mounted
Control panel is installed (section 14.2).
11.2 ACCESSORIES NOT INCLUDED IN THE SUPPLY
11.2.1 EXTERNAL SENSOR
To connect this accessory, see figure to side (terminals 4 - 5 )
and the instructions supplied with the sensor.
SETTING THE "Kt" CLIMATE CURVE
When the external sensor is connected to the boiler, the
electronic board adjusts the flow temperature calculated
according to the set Kt coefficient. Select the required curve by
pressing as indicated in the chart in annex "SECTION"
E for selecting the most appropriate one (00 to 90).
KEY TO CHART - “SECTION” E
Flow temp Outside temp
12. SPECIAL FUNCTIONS
12.1 INITIAL IGNITION
When lighting the boiler for the first time perform the following procedure. After electrically powering the boiler the code " 000 "
appears on the display. This means the appliance is ready for the " initial lighting " procedure.
Press together and hold down for 6 seconds. " On " appears on the display for 2 seconds followed by code " 312 " indicating
that the " system venting " function is active. This function lasts 10 minutes.
During initial ignition, the burner may not ignite (causing the boiler to shut down) until any air in the gas pipes is vented.
In this case, repeat the ignition procedure until gas reaches the burner. To reset boiler operation, press for at least 2
seconds.
If the venting function is interrupted by a power blackout, start the function again when power is restored by pressing
and together and holding them down for at least 6 seconds. If the display shows fault E118 (low pressure in hydraulic
circuit) during the venting function, open the filling tap on the appliance and restore the correct pressure.
The combustion of this appliance has been factory controlled, calibrated and set for operation with NATURAL GAS.
For the first few ignitions immediately after installation the system must implement a self-learning procedure to reach the
correct ignition level.
12.2 SYSTEM GAS EXTRACTION FUNCTION
This function is used to facilitate the elimination of the air inside the heating circuit when the boiler is first installed or after
maintenance when the water is drained from the primary circuit.
To enable the system gas extraction function press buttons together for 6 seconds. When the function is active, On
appears on the display for a few seconds, followed by programme row
312
.
The electronic board will activate a pump on/off cycle lasting 10 minutes. The function will automatically stop at the end of the
cycle. To manually exit this function, press the above buttons together for 6 seconds once again.
12.3 CHIMNEY SWEEPER
This function enables the boiler to generate maximum heating power . After activation, the boiler power % can be adjusted from
minimum to maximum in the DHW mode. The following procedure is used.
• Press buttons and together for at least 6 seconds. When the function is enabled, the displays shows “ On ” for a few
seconds followed by programme row “ 303 ” alternated with the % of boiler power.
• Press to gradually adjust power (sensitivity 1%).
• To exit press both buttons together for at least 6 seconds, as described in point one.
Press to display the instantaneous flow temperature for 15 seconds.