Community heating
June 1st 2008 Alfa Laval's new City Community Heating substation is designed to provide ondemand
heating and hot water to apartments and single-family houses connected
to a Community Heating network.Two versions are available to provide the option
of direct or indirect connection to the CH network
The direct version is for use
with low-pressure CH
systems and provides
heating direct from the main circuit
to the apartment. Hot tap water is
heated indirectly via a highefficiency
compact heat exchanger.
In the indirect version, heat
exchangers provide indirect heating
of both the domestic hot water and
the heating system, providing each
individual dwelling with its own,
discrete heating system.
Easy to install
City is designed to provide plug-andplay
levels of simplicity when it comes
to installation.Wiring is factoryinstalled
and tested and the plumbing
connections thoughtfully located to
enable top or bottom connection,
depending on the layout of the
installation site.Thanks to its compact
dimensions and low weight, City can
be fitted into existing dwellings
without undue disruption, either onto
a wall or inside a cupboard.In new
build apartments or houses, it requires
less space than traditional substations
or individual domestic boilers. It can
also be connected
to under-floor
heating systems
through control
equipment
designed
specifically for
this purpose.
High comfort
The City
substation
provides fully
automatic individual temperature
settings for central heating and hot
water. Once the homeowner has set
the desired temperature the system
automatically regulates itself to
provide optimum comfort.The
energy supplier/building manager
can monitor the amount of energy
consumed by individual homes
using a system that records the flow
of heat from the central source and
measures the difference between its
inlet and outlet temperatures.
On the indirect version of City,
two compact heat exchangers use
heat from the central source to heat
water for the apartment's central
heating system and tap water
circuits.Consequently, any leak in
an individual apartment will be
isolated from the principal CH
network.An integrated sensor
monitors and controls the tap
water temperature at a
predetermined level,
eliminating the risk of scalding
while ensuring a safe supply of
hot water is constantly available.
Long-term performance
The City is built to provide longterm
performance.The compact
heat exchanger plates and all of the
associated pipe-work are
manufactured in acid-resistant
stainless steel.Within the cabinet, all
key components are easily
accessible for inspection and service.
The City heating interface unit has
been developed by Alfa Laval
specifically for markets such as the
UK and Ireland where constant
pressure on energy, the economy
and the environment is changing the
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