MELBURY HE 3800-10000 -
Installation, Use and Maintenance
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410821-V11
1. DESCRIPTION
1.1. General information
Melbury HE boilers are high efficiency, power-saving
boilers ranging from 1150 to 5400 kW, from 1000 to
4700 kW for low-NOx applications and from 1000 to
4300 kW with ECA-rating. They can be operated in
combination with oil or gas burners. Models Melbury
3800-10000 are also adapted for use with heavy fuel at
a maximum output corresponding to the low-NOx
applications.
The Melbury HE boiler range are three pass, smoke
tube boilers with combustion chamber and flue way
using the low-Nox technology. The geometry of the
furnace, the furnace’s low charge, coupled with the
Ygnis patented flame escape system, allow users
to obtain low emission values and safe operation in
conformity with law provisions.
figure 1 - Three pass
The third pass is equipped with turbulators. Their
turbulent action further increases the heat exchange
and allows the system to work at low combustion gas
temperatures, guaranteeing optimal fuel use as a
result.
The boiler’s thermal insulation is made of glass fibre
felt that adheres to the boiler shell, guaranteeing
minimal loss in stand-by mode. In addition, the front
part of the Melbury HE 3800-10000 boiler is provided
with superior quality ceramic fibre insulation. The
outstanding characteristics of the material are the low
thermal conductivity and the low specific thermal
capacity. This leads to a further reduction of the stand-
by losses. On the larger boilers a special concrete with
similar characteristics is used as thermal insulation of
the boiler door.
The revolving door gives easy access to parts of the
boiler that are in contact with combustion gases. This
allows cleaning of combustion chamber and passage
ways to be easily performed from the front. The
turbulators are retractable from the front. The flue gas
collector on the rear of the boiler is provided with an
opening for easy cleaning.
A divided version of the boiler range can be made
available as custom made option. Thanks to the inferior
dimensions of the individual parts, this version is most
suitable when bringing-in conditions are tight. The
individual prefabricated parts must be welded together
in the boiler room.
1.2. Scope of supply
- Boiler body, flue gas collector and flue gas tube
- Gas-tight boiler door with insulation and burner
connection (and flue gas fan connection if ordered for
Melbury HE 3800-6300)
- Furnace sight glass integrated in the boiler door
- Supply and return tubes as well as safety valve
connection with flanges, counterflanges, gaskets and
screws
- Filling and discharge tube
- Flue gas turbulators
- Boiler insulation
- Catwalk over the boiler
- Two lifting rings
- Boiler control panel (version depending on order)
- Burner cables (optional)
- Burner pipe insulation material (supplied loose)
- Cleaning set
- Manual of installation and maintenance, and operating
instructions
