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| Good reasons for installing
air conditioning cooling in an office: |
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Too hot (obviously) |
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Too humid, especially in summer and autumn |
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High solar gains through windows |
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Office equipment generating heat |
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Can’t leave windows open, because of security
risk |
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Can’t open windows because of noise from traffic,
railway, airport, industry |
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Can’t open windows because wind blows papers,
and brings in dust |
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Improvement of staff comfort resulting in increased efficiency |
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| Good reasons for installing
air conditioning/heat pump systems in an office: |
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Heat pumps provide heating as well as cooling in the
same unit. The heat pump is extremely efficient on the heating operation,
having a COP (Coefficient of Performance) of up to 4.0 or 5.0 COP
of 4.0 means that the system will deliver 4.0KW of heat into the
room, whilst consuming only 1KW of electricity, i.e. very efficient
compared to, say, an electric fan heater or convector |
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| All the reasons listed above
PLUS |
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Far more efficient than any other form of electric heating
(because of high COPs, as described above). |
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Many offices require heating in the early morning, and
once the office has warmed up by mid morning, require cooling for
the rest of the day. |
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Compliance with Part L Building Regulations. |
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Enhanced Capital Allowance available on many heat pump
systems. |
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Individual areas can be heated without operating a large
central heating system. |
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| Typical locations for air conditioning / heat pump systems. |
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Individual offices |
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Open
plan offices |
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Meeting
rooms |
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IT
equipment rooms |
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Showrooms |
The majority of
Mitsubishi air conditioning systems sold in the UK are for offices. Even
small offices of less than 6m2 can have a small low cost system installed.
In most offices it is preferable to install units in the ceiling, or at
high level on the wall. This leaves the lower wall space clear for furniture,
cabinets, partitions, notice boards, etc.
Types of indoor unit:
Cassette type (model
FDTVA/FDTCVA Cassette Recessed System): by far the most popular.
This is
installed in a suspended ceiling, with the fascia panel on view,
which has four air distribution outlets (hence the name 4-way
cassette). The bulk of the unit is above the ceiling grid out
of sight. The fascia panel will normally blend with most modern
ceilings, and supply conditioned air to a large area, without
the additional cost of ducting and discharge grilles.
The FDT cassette also has the facility to deliver a small proportion
of the conditioned air via a branch duct, to a small adjacent area,
e.g. store room, cash office, consultation room.
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Compact Cassette (model
FDTVA/FDTCVA Cassette Recessed System)
This is similar to the FDTA Cassette, but allows easy installation
in a 600 x 600 ceiling grid
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Ceiling Suspended (model
FDEVA Ceiling Mounted System)
Where there is no ceiling void, this unit can be installed to provide
a cost effective solution. Suitable for most areas, but care must
be taken with regard to possible drafts, especially the larger models
which can cause a problem in an office with a low ceiling.
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Wall mounted (model:
FDKVA Wall System, or SRK
Wall Mounted Inverter Split System)
Usually mounted at high level to avoid drafts, and provide good air
distribution.
Wall mounted systems are lower in cost than other systems, and will
provide a cost effective means of cooling and heating. However, it
is sometimes difficult to conceal the connecting pipework and the
drainage pipe. The installer would be able to advise on this.
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Ducted (model:
FDUMVA Ducted System)
Where it is necessary to conceal the air conditioning units, these
units can be installed above the ceiling, and the installer would
design and fit suitable ductwork and discharge grilles to give the
best air distribution pattern in the room. This type of installation
is more costly, but it can be custom designed to suit special applications.
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Multi
Systems
(FDCVA Inverter Multi
System)
For larger areas it is often more cost effective to install one outdoor
unit which serves two, three or four indoor units. For example, a
cassette unit installed in a long narrow room would not effectively
circulate conditioned air to the far corners. In this case a twin
of triple Multi System would be more suitable. Multi systems are always
less costly to install than several individual systems.
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Quotations and Installation Please see page on Installers
3D and HRP supply
Mitsubishi air conditioning equipment to over 2000 air conditioning installation
companies throughout the UK and Ireland. We know many installation contractors,
large and small, who are geared up for different types of contract. 3D
and HRP can recommend suitable installers to quote for the supply and installation
in all areas.
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