Frequently Asked Questions (FAQ)
General
What are the factors to select an air-conditioner?
What is cooling air conditioner & heat pump?
What is sound pressure level / sound power level?
Product
What are the products available?
How many types of Wall-Mounted Single
Split unit do you offer?
How many types of Ceiling Convertible
Single Split unit do you offer?
What type of
refrigerant that is being used in your air conditioner unit?
Troubleshooting
Why is the air conditioner not cold or not warm?
Do I have to
change the filters? How often does this need to be done?
The air conditioner cannot discharge cool air
instantly.
Do I need to service the condensing unit?
The amount of drained water is large.
The battery control light is dim.
Why there is condensation on the front panel?
|
Question |
What are the factors that need to consider when determine the best
location and
installation system for air conditioner?
|
Answer |
The factors to be considered
are:-
·
Enough space to allow for sufficient airflow for indoor and outdoor
units.
·
Enough space for maintenance and servicing.
·
Units should be installed on a level location
·
Discharged air should not disturb others noise or vibration
·
Appearance [Back To Top]
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Question |
What is E.E.R.?
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Answer |
E.E.R. stands for Energy
Efficiency Ratio. An air conditioner with higher E.E.R. saves more
energy
and is more efficient. E.E.R.
is a ratio calculated by dividing the cooling capacity in Btu/h [W] by the
power input in
|
Question |
What is S.E.E.R?
|
Answer |
S.E.E.R stands for Seasonal
Energy Efficiency Ratio. It measures how efficiently a residential
central
cooling system (air
conditioner or heat pump) will operate over an entire cooling season, as
opposed to
a single outdoor temperature.
As with E.E.R., a higher S.E.E.R. reflects a more efficient cooling system.
S.E.E.R is calculated based on
the total amount of cooling (in Btu) the system will provide over the entire
season divided by the total
number of watt-hours it will consume.
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Question |
What is C.O.P?
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Answer |
C.O.P stands for Coefficient
of Performance. It is the measurement of how efficient a heating or
cooling system (particularly a
heat pump in its heating mode) will operate at a single outdoor temperature
condition. An air conditioner
with higher C.O.P saves more energy and is more efficient. C.O.P is a ratio
of the heating capacity in
Watt [W] to the effective power input of the equipment in
given set of rating condition,
expressed in W/W. the formula is stated:
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Question |
What is H.S.P.F?
|
Answer |
H.S.P.F stands for Heating
Seasonal Performance Factor. It is the measurement of how efficiently
all residential and some
commercial heat pumps will operate in their heating mode over an entire normal
heating season. The higher the
H.S.P.F, the more efficient the system. H.S.P.F is determined by dividing
the total number of Btu of
heat produced over the heating season by the total number of watt-hours of
electricity that is required
to produce that heat. The formula is:
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Question |
What is a B.T.U.?
|
Answer |
Air conditioner sizes (or capacities)
are rated in BTUs per hour. The abbreviation BTU stands for
British Thermal Unit. It measures the
quantity of heat required to raise the temperature of one pound of
water one degree Fahrenheit at sea
level. BTUs are the primary measurement used to match your cooling
needs with an air conditioner. [Back To
Top]
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Question |
What is air-conditioning?
|
Answer |
Air conditioning is the
control of temperature, humidity, air movement, and the quality of air in a
room.
Basically, we need air
conditioned space is to maintain the indoor conditions in comfortable manner
and
control or improve the
conditions of an industrial process so that its quality of the products is
enhanced.
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Question |
What are the factors to select an air-conditioner?
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Answer |
a. Capacity
This factor is most obvious to
select an air-conditioners based on the size of room or any space to
determine the essential
capacity of AC. However, determining of capacity should be involved the
heat load estimation of the
room as well. For example, the consideration of heat lose through the
wall, door and window, heat
generated by equipments and humans, etc.
b. Efficiency
The efficiency of an AC
directly affects the operating cost of an air conditioning system. The way to
calculate the efficiency is
based on EER (Energy Efficiency Relative) which is the ratio of rated
capacity output and rated
power input. The figure reflects the total capacity of cooling/heating that we
can get out from an AC system
per unit power that we input to it.
c. Reliability
Air conditioner is required to
do maintenance after installed, in other words, an unreliable air
conditioner will incur more cost
after sales service.
d. Comfort
The system must be able to
control the basic factors of comfort like temperature, humidity and air
motion within an acceptable
range. For overall, the comfortable temperature ranges from 20 °C to 26 °C.
e. Cost
The Total Cost of application
of Air Conditioning is important because it is direct affected the reliability
of the unit and also the
quality of the products that we wish to select.
f. Aesthetics
The factor is important when
the coverage area is somewhere open to the public like Hotel, Restaurant
and Shopping Complexes. [Back To Top]
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Question |
What is a compressor?
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Answer |
The compressor squeezes the
air that enters it into smaller areas, resulting in an increase in the air
pressure.
This results in an increase in
the energy potential of the air.
The Compressor is the most
important piece of a heating or cooling system, which located in the outdoor
unit, the compressor is
responsible for pumping refrigerant throughout the system. The compressor is
often
called "the heart of the
system" because it pumps the refrigerant from the indoor evaporator to the
outdoor
condenser and back to the
evaporator again.
Refrigerant Circuit Diagram
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Question |
What is fan?
|
Answer |
A fan is a gas flow-producing
machine, which converts mechanical rotating energy to gas or fluid energy.
There are mainly two types of
fan: centrifugal fans and axial fan. Centrifugal fan has flow within the wheel
that is radial to the shaft while
the axial fan has flow within the wheel that is substantially parallel to the
shaft.
Example of fan
|
Question |
What is cooling air conditioner & heat pump?
|
Answer |
For a basic cooling
air-conditioner, its purpose is to supply the cool air to the room. In the
particular
refrigeration circuit,
refrigerants circulate in the equipment repeating the processes of compression,
condensation, expansion and
evaporation and back to compression in order to remove the warm air inside
the room to the outdoor.
Meanwhile, The Heat Pump
supplies the heated air to the indoor through the opposite cycle from the
refrigerant device by using a
four way valve to reverse the flow of the refrigerants. In the reversed cycle,
the condensation process takes
place in indoor and evaporation takes place in outdoor.
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Question |
What is sound?
|
Answer |
Sound is the sensation resulting
from stimulation of the auditory mechanism by air waves or vibrations that
can be detected by the human
ear. The response of the human ear to audible sound depends both on the
sound frequency (measured in
Hertz, Hz) and the sound pressure, measured in decibels (dB). Audible
sound for fit, healthy young
people is from 20Hz-20,000Hz, with maximum sensitivity at around 3,000Hz. As
we age it is normal to detect
sounds in the middle or speech frequencies. Frequencies below 20Hz are called
'infrasound' and those above
20,000Hz 'ultrasound'. The numerical magnitude of a sound is normally expressed
as the sound pressure level in
logarithmic decibel units (dB) [Back To Top]
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Question |
What is sound pressure level / sound power level?
|
Answer |
Sound pressure level is
variation of the pressure in one given point. It depends on the environment
acoustic
conditions and the distance
from the source.
Sound power level is the
acoustic energy given by the source. It is independent of the acoustic
conditions and
the distance from the source.
