Inspection And Maintenance Instructions; General; Cooling Mode; Annual Inspection - REMEHA Gas 310 ECO Technical Information

15

INSPECTION AND MAINTENANCE INSTRUCTIONS

15.1 General

The Remeha Gas 310 ECO has been designed to need
minimum maintenance, but to ensure optimum efficiency
we advise that once a year the boiler should be checked
and if necessary cleaned and reset.
All service and maintenance must be carried out by a
qualified Engineer with the relevant training and certifi-
cation (ie CORGI - ACOPS - etc.).

15.2 Cooling mode

This mode enables maintenance on the burner and/ or
the heat exchanger to be carried out more efficiently.
In this mode, the fann runs at maximum speed for two
minutes, which cools down the boiler rapidly. When this
mode is active, the system does not respond to heat
demands.
g
Important!!
This mode can only be activat-
ed if there is no heat demand on the boiler.
The code c[l indicates that the mode is active
(c[l for cooling; c in the left-hand display section,
[ in the middle section and l in the right-hand section).
The mode is activated by pressing the s and [+] keys
simultaneously (during normal operating status with no
heat demand).
The mode can be terminated prematurely by pressing
the [+] and [-] keys simultaneously.

15.3 Annual Inspection

The annual inspection of the Remeha Gas 310 as fol-
lows:
- Check combustion characteristics, full and part load
(see section 10.1).
Note: When checking combustion the C0
be in accordance with the values in table 10 with a
tolerance of +/- 0.5%. If the levels are outside these
tolerances, adjustment to the levels must be made in
accordance with a tolerance of +/- 0.15%.
- Check flue gas temperature. If flue gas temperature
is more than 30°C above the boiler return water tem-
perature the heat exchanger must be cleaned (see
par. 15.4.5).
- Check/clean the condensate siphon (refill with clean
water).
- Check for leaks (waterside, flue gas side and gas
soundness).
- Check flue and air inlet system is clear and gas/
water tight.
- Check system pressure.
- Check control settings.
- Check boiler parameters.
- Check ionisation level, minimum 3 µA dc (see 12.2,
parameter G).
Supplied By www.heating spares.co Tel. 0161 620 6677
If ionisation level < 3 µA dc or not present, check:
- Is flame shape stable and colour as described in
commissioning instructions.
- Check ignition probe earth.
- Check condition of ignition/ ionisation probe replace if
necessary.
- Replace electrode at least every 2 years.
- Clean any oxides/deposits with sandpaper or fine
emery cloth.
- Check shape of probe and ignition gap, i.e. 3 to 4 mm
(see fig. 35).
- Check temperature sensors for resistance values
against fig. 27 (humidity on sensors).
- Check and clean if necessary the gas filter.
- Check air box and dirt trap (see section 15.4.1).
fig. 27 Sensor resistance graph
levels should

15.4 Maintenance

2
If during the annual inspection combustion results
indicate that the boiler is no longer operating at the
optimum level, additional maintenance should be
carried out as follows:
NOTE:
Please ensure that the gas supply and mains power
supply is isolated before any maintenance work is car-
ried out on the boiler.
Care should be taken when stripping the boiler for main-
tenance making sure that all parts nuts, washers and
gaskets etc. are kept safe, clean and dry for re-assem-
bly. Following maintenance/ cleaning, the boiler should
be re-assembled in the reverse order re-placing gaskets
and joints where found necessary.
49