KDB-GOM
Series
- 94 -
No
16-1
Part name
Main heat exchanger - 1
Replacement steps
Disassemb
ly
①
Unplug the boiler from the electric outlet.
②
Open the front cover.
③
Release the heating water by unscrewing the drain screw below the circulator pump and release the heating
water from the splitter.
④
Separate the board holding the air pressure switch and the ignition transformer by removing one screw.
⑤
Separate the front cover of the main heat exchanger by removing the 9 screws in the front and the 2 screws on
the top.
⑥
Separate the gas pipe between the gas control valve and the nozzle.
⑦
Separate the fan unit according to the manual.
⑧
Remove the plastic hose band connecting the expansion tank and the main heat exchanger.
⑨
Separate the high limit fuse according to the manual.
⑩
Separate the overheating prevention device wire.
⑪
Remove the hot water temperature sensor.
⑫
Remove the 2 screws at the bottom, the screw on the left and the one on the right, fixing the main heat
exchanger to the front cover.
⑬
Separate the main heat exchanger from the boiler.
⑭
Separate the exhaust gas notice plate from the main heat exchanger by removing the 6 screws on the top.
⑮
Remove the 4 screws fixing the main heat exchanger and separate the main heat exchanger from its front
cover.
47
⑭
⑫
⑬
⑧
⑪
⑦
⑤
⑨
⑥
④