REMEHA W40 Installation And Maintenance Instructions Manual page 37

12. INSPECTION AND SERVICING INSTRUCTIONS
12.1 General
The remeha W40/60-m ECO is practically maintenance-
free. Once a year, the appliance should be checked and
if necessary cleaned.
12.2 Inspection
The annual inspection of the remeha W40/60-m ECO
can be limited to:
- inspection of the boilers combustion characteristics
- cleaning the siphon
- setting the ignition electrode
- check for leaks (water side, flue gas side and gas side)
- water pressure check.
Checking the boiler combustion characteristics
This can be done by measuring the O
gas (P7, fig 24) . The boiler should be in equilibrium with
an average boiler water temperature of approximately
70°C.
The flue gas temperature can also be taken at P7.
This flue gas temperature must not exceed the return
water temperature by more than 30°C.
If this check shows the operation of the unit to have
deteriorated clean the boiler as detailed in para. 12.3.
boiler
input
model
(NCV) speed
kW
12.7
W40-m approx. 3000
42.3
approx. 4900
18.6
W60-m approx. 3000
62.1
approx. 4900
The above values apply to a closed air box.
See also para. 10.1 for initial settings.
level in the flue
2
fan O
2
rpm %
4.8
4.8
4.8
4.8
Fig. 24 Measuring points
Cleaning the siphon
Remove the siphon and clean it. Fill the siphon with
clean water and fit it.
Setting the ignition electrode
CO
Check the setting of the ignition electrode (3-4 mm).
2
%
Water pressure check
9.0 The water pressure should be at least 0.8 bar. You are
9.0
recommended to fill the appliance to approx. 1.5 bar.
9.0
9.0
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