Features; General - Carrier Atmosphera 42EM Series Manual

2 - FEATURES

2.1 - General

The Carrier 42EM Atmosphera is a range of fan coil units
designed for installation above false ceilings.
Three major aspects influenced the design of this product range:
- Configuration flexibility
- Low noise levels
- Compact design
2.1.1 - Configuration flexibility
To best meet customer requirements, many models and confi-
gurations are available.
The Carrier 42EM Atmosphera comes in three sizes - 1, 2 and 3.
Sizes 2 and 3 are both available in four models and four motor
drive selections, suitable for air conditioning of rooms from
25 to 75 m 2 in size.
To ensure dimensional and location flexibility for the suction
and discharge spigots, two distinct separate product ranges are
available:
- modular models
- compact in-line models
Modular models
These models offer more duct connection flexibility, as they
not only allow connection spigots with a diameter of 200 mm
on the sides, but also easy reconfiguration on site.
The modular model consists of a non-ducted base unit, on
which a return air plenum (factory-assembled) can be installed.
Sizes 2 and 3
NOTE : Carrier recommends not to exceed an air velocity of
4 m/s (125 l/s) per spigot.
4
Size 1
Base unit
Base unit
Compact in-line models
These one-piece units are ducted in-line supply and return air
models (only 125 mm diameter fresh air ducts can be connected
on the sides).
Sizes 2 and 3
2.1.2 - Low noise levels
In order to further enhance occupant comfort this product
range offers especially low noise levels.
The casing of the Carrier 42EM Atmosphera is made of
galvanised sheet steel with full high-efficiency internal lining
for optimised thermal and sound insulation of the unit.
In order to comply with the various local regulations (fire
class) the Carrier 42EM Atmosphera is available in two
insulation versions:
- class M1 type insulation
- class 0 insulation in accordance with BS 476, part 6 and 7.
The 42EM Atmosphera is also equipped with anti-vibration
mounts with a strong vibration absorption levels.
2.1.3 - Compact design
To allow installation in most false ceiling designs, the conden-
sate removal pan height in the 42EM Atmosphera is the same
for all sizes (1, 2 or 3) - 215 mm from the top of the unit.
In order to reduce the dimensions of the 42EM to the minimum,
the units are equipped with high-efficiency heat exchangers
with very high cooling capacity/treated air flow ratios.
Size 1