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3. Installing the System Piping
The instalation must be made by sufficiently qualified staff,
authorised to do so. For correct installation, all the requirements
and recommendations described in the Regulation for Heating
Installations in Buildings (RITE). must be complied with, together
eith all other national and/or local regulations applicable at the
time of installation. However, the following recommendations
must be complied with, at the list:
Before connecting the boiler hydraulically, the inside of the
●
pipes must be thoroughly cleaned, removing all sediments of
any type which could cause oxidation or damage to the heat
exchanger.
It is recommended to fit shut-off valves to the heating
●
installation output and return pipes, to avoid having to drain
the installation when maintenance work is carried out on the
boiler.
Bleed the air from the boiler and heating installation. Ensure
●
there is no air in the heating circuit.
The NCB LSWE boiler is a condensing boiler, and it is
●
therefore essential for the condensate outlet to lead to a
drain, in compliance with all applicable national and/or local
regulations to this respect.
The boiler drain must not e located above a window, entry
●
door or other public point of access. Bear in mid that boiling
water or steam could come out when draining.
Draining must be done in a downward direction and towards
●
the walls.
WARNING
Tighten the boiler water connections, taking care not
●
to damage them. Do not force the tube connections
excessively, as this could damage the connections and
cause leaks.
Any dirt in the tubes could reduce boiler efficiency and
●
cause it to malfuction.
Any pipes exposed to the elements or which could freeze
●
in winter must be insulated with suitable insulating
material.
CAUTION
Failure to follow the instructions provided in this section will
void the warranty and may result in property damage, fire,
serious injury or death.
3.1 Installing a Space Heating System
The primary and secondary heat exchangers of the Navien
NCB LSWE boiler are designed to attain the highest level of
heat transfer in a compact design. To accomplish this, the
heating water flows through a series of tubes (secondary
heat exchanger) and finned tubes (primary heat exchanger),
designed to maximize the heat transfer area. To maintain the
efficient and reliable operation of the heat exchangers, and to
avoid heat exchanger failure, it is critical to ensure the rules and
guidelines in this section are followed.
CAUTION
The installation must be made by sufficiently qualified
●
staff, authorised to do so.
For correct installation, all the requirements and
●
recommendations described in the Regulation for Heating
Installations in Buildings (RITE) must be complied with,
together with all other national and/or local regulations
applicable at the time of installation.
Refer to the following illustration for a typical DHW piping
example for the boiler.
Union
CH Flow
Floor Heating Circuit or
Heating Circuit (Radiator)
When connecting the space heating system, follow these
guidelines:
Tighten the connection valves with care to avoid damage.
●
Test the boiler for proper space heating flow and inspect for
●
leaks.
Botton View
CH Return
Heating Supply
Heating Return
Adaptor
Adaptor
Installing the System Piping
23
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