Buderus 500 - 28/C Servicing Manual page 71

box 264
Pull the heat exchanger towards the arrow to remove.
box 265
Check the seal on the heat exchanger casing (item 1) for
signs of ageing and replace if required.
Replace the four O-rings (item 2), two on each side.
We reserve the right to make technical modifications
Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006
box 266
Clean the heat exchanger with compressed air, a high-
A
pressure hose or with water and a soft brush.
CAUTION!
When cleaning the heat exchanger never use a steel
A
brush.
CAUTION!
When using compressed air:
Use eye protection, inhalation protection and hearing
protection.
1
box 267
2
1
A
CAUTION!
Observe the position of the heat exchanger during
fitting. Insert the upper section of the heat exchanger at
the top.
Fit the new or cleaned heat exchanger and all other
A
components by following the above procedure in reverse.
CAUTION!
A
The released coil (item 1) touches the underside.
CAUTION!
Insert a new heat exchanger-gas/air seal before fitting
the gas/air unit.
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