Potterton SIRIUS FS Installation & Servicing Instructions Manual page 62

7.3.18 Heat Exchanger Inspection and Cleaning
Inspection
with door
in place
Do not use chemical treatments to clean out deposits from the heat exchanger. Use only
clean water or white vinegar as instructed above.
When using water to flush through the heat exchanger, ensure that water exposure to
the insulation material at the end of the heat exchanger is minimised to prevent
damage to this insulation.
7.3.19 Rear Heat Exchanger Insulation Replacement
Specialist equipment is required to replace the rear insulation, contact the manufacturer
on 0845 070 1055 for advice.
Sirius FS
- With the heat exchanger door in place and the burner tube removed
or with the door entirely removed, use a torch to examine the
inside of the heat exchanger.
- The heat exchanger should be bright and free from deposits or major
patches of discolouration.
- If necessary deposits can be removed (see section 7.3.15 for door removal)
with a nylon brush. Loose deposits can either be vacuumed out or water
used to flush the deposits into the condense drain.
- For stubborn deposits apply white vinegar to the coils, using a hand sprayer
and leave for 3 minutes. Remove deposits using a nylon brush and rinse
with plenty of clean water (repeat if necessary).
- Inspect condition of door seals and replace if there is any sign of wear or
damage.
60
GB/IE