DeDietrich 310 ECO Series, Installation And Operating Manual, Page: 66 / 76

65
De Dietrich Gas 310/610 ECO
15.4.10 Gas filter check
Measure the pressure differential

P
at measuring points, P
i
and P
u
(see
fig. 37) on the gas filter.
•
If the

P
value is above 4.0” w.c. [10 mbar]: gas filter must be
replaced.
•
If the

P
value is between 2.4 - 4.0” w.c. [6-10 mbar]: measure
outgoing pressure on P
u
. If this value is below 7” w.c. [18 mbar]:
gas filter must be replaced.
•
If the

P
value is below 2.4” w.c. [6 mbar]
15.4.11 Inspection glass cleaning
Remove the two retaining screws on the inspection glass holder, clean and replace.
Re-assemble boiler in reverse order, check front plate gasket and insulation piece, replace if required. Also check
the gasket on fan and on gas valve, replace if necessary. Ensure that all cables are routed correctly using
existing clips and ties were possible to ensure that they do not touch any hot parts of the boiler.

Important!! Ensure that wires do not come into contact with hot boiler parts
Commission boiler in accordance with section 10.1; complete site report and/or boiler log book if present
Other items requiring periodic checks:
At least once a year the must be checked, cleaned or replaced as required:

Venting system leaks or poor connections

Venting system sagging or damaged vent components

Debris in vent terminal screens [exhaust and air inlet]

Boiler room kept clear of flammable liquids, combustible materials,

The combustion air supply source(s) clear without any obstructions

Combustion air filter if fitted, replace as necessary

Inspection of combustion air supply venting
Additional boiler check list or routine boiler maintenance checklist has been provided on page 66
Fig. 37 – Gas filter measuring points
Fig. 38 – Flame inspection port removal