Version 1: December 2020
11
manual: 0009 0251EN-Alke
• In case a gas hose is used, check this carefully for cracks, wear and other signs of damage or alteration.
Replace it also when the maximum lifetime printed on the hose, or the maximum lifetime allowed by local
requirements, has been passed.
• Commission the heater after maintenance and check it carefully during first ignition, firing and extinguishing.
In case the heaters need to be stored for a long time, make sure that no dust, spiders, etc. can enter the heater.
Use the carton packaging box to store the heater, or a plastic bag if the box is not available anymore, and close
this carefully.
Consumable parts
Thermocouples (15) and the magnet unit (3) inside the gas safety device are the most important parts that
maybe requires replacement during normal operational life. See the parts list for more information.
Replacement of the magnet unit
•
Unscrew the thermocouple extension (8) at the gas safety device (4, 5, 6 or 7) by using spanner #8.
•
Unscrew the nut for connection of the thermocouple (or thermocouple extension) at the gas safety device
(4, 5, 6 or 7) by using spanner #17.
•
Remove the broken magnet unit (3) and replace by a new one.
•
Replace the nut for connection of the thermocouple (or thermocouple extension) by using spanner #17 and
close carefully (firmly but not excessive) to avoid gas leakage.
•
Replace the thermocouple extension (8) at the gas safety device (4, 5, 6 or 7) by using spanner #8.
•
Carefully check the gas safety device for gas leakage before taking back into operation.
Replacement of the thermocouple
•
Remove the thermocouple (15) at the connector of the ignition device (2) by unscrewing the nut M8 of the
thermocouple by using a spanner #8.
•
Loosen the nuts M8x1 (2x) at the tip of the thermocouple by using a spanner #13 and remove the
thermocouple from the reflector.
•
Replace with a new thermocouple until the position as indicated in the drawings below. Tighten nut M8x1
(2x) to secure the thermocouple in place.
•
Bend the new thermocouple in the identical shape as the old one the and screw the thermocouple nut M8 in
the connector of the ignition device (2). Hand-tight first and then an additional 1/6 turn.
Replacement of the gas injection set/air restrictor
•
Disconnect the heater from the gas line and disconnect the electric connector (1) from the ignition device (2)
(and electric connector (9) from the coil (10) for the S models only).
•
Disconnect the thermocouple from the ignition device (2) and disconnect the spark plug wire (17) from the
ignition device (2).
•
Loosen the nut M20 on the gasway directly after the air inlet connection (11) by using a spanner #25.
•
Loosen the M6 screw on the air inlet connection (11) (directly aside the M20 nut). The air inlet connector can
turn freely now around its axis.
•
A spanner #17 can be placed through the filter opening of the air inlet connector on the gasway. Turn anti-
clockwise to loosen the gasline from the spider (13). Turn the gas injection set till it comes separated from
the spider (13).
•
The air restrictor (12) can be replaced or removed now from the spider.
•
Repeat the procedure above in reversed order to mount all parts back again.
Conversion instructions
Conversion shall be done by a qualified installer only. To convert a heater from one gas or gas pressure to
another gas or gas pressure, take the following actions.
•
Consult the technical table on the last page and contact the manufacturer or dealer with the model number
and serial number for the parts needed. (e.g. a new gas injection set (4, 5, 6 or 7), a new air restrictor (12)
or a new venturi (14) and a new data plate).
•
Replace the parts by new ones. Use a proper gas sealant to avoid gas leakage and seal the new parts.
•
Check the gas supply for the proper gas pressure and gas type and do a leakage test first.
•
Take the heater into operation and do a visual examination of the flame as explained above.
