Filter
Top Products
Manual 2100-520
Page 3 of 7
GENERAL INFORMATION
This manual is intended to be a general guide for care and operation of typical systems and covers the
most important features you should be aware of and are responsible for as the user of the equipment.
You should request a detailed operation sequence and explanation of any special features from your
installer and/or Service Company, and also have them instruct you as to any routine maintenance
procedures you are responsible for.
This manual will address the basic items that should apply to all systems, and will then be separated into
specific types of products to cover things unique to those product types.
AIR FILTERS
Keeping clean air filter(s) is the single most important responsibility of the user of the equipment. Each
type of system must be equipped with an air filter(s) in the indoor circulating air system to clean the air,
to keep the system itself clean for peak efficiency and capacity, and to prolong the useful life of the
equipment. DO NOT operate the system without the proper air filters.
Filters should be inspected at least monthly, and replaced or cleaned (depending on type) as needed.
The useful life of an air filter can vary widely depending upon application and use of the equipment, and
it is critical to monitor filter condition and establish an acceptable maintenance schedule. Failure to do so
will increase operating and repair costs, decrease capacity and efficiency, and shorten the service life of
the equipment. A common symptom of a dirty filter in the cooling mode is a freeze-up of the indoor coil.
The air filters used may be a disposable (throwaway) type or may be a cleanable type that can be
thoroughly cleaned, rinsed and reused many times. It is important to make sure that the correct filter
size and type for your system is always used. If there is any question as to acceptable filter size or type,
review the Installation Instructions for the specific equipment involved, if available. Otherwise, consult
with your installing dealer or Service Company.
Most equipment can have the filters inspected and serviced by the user with no problems. In some
instances, because of equipment design or specific installation conditions, it may be necessary to have
this procedure done by a qualified service company. Have your installer or service company show you
where the filter(s) are and demonstrate the service procedure or make arrangements for them to provide
this service on an as needed basis.
BASIC OPERATING PRINCIPLES
HEAT PUMP (Water-to-Air)
These types of heat pumps are also commonly referred to as water source or geothermal systems. Just
like the air source heat pump, they are refrigerant-based systems that both heats and cools using a
compressor for both modes of operation. The primary difference is that the system uses water or
antifreeze protected water solution instead of an air-cooled outdoor heat transfer coil, and there is no
outdoor motor/fan system but instead a water pump to provide adequate water flow to the system.
COOLING MODE
The cooling mode operates similar to a refrigerator, removing heat from inside the conditioned space
and rejects it outside of the space being controlled. There are three main parts of the system:
1. The evaporator (indoor) coil where cold refrigerant absorbs heat from the air, which circulates
from the conditioned space, through the machine, and is returned to the space at a lower
temperature and with some of the humidity (moisture) removed. The moisture exits through a
condensate drain system. A motor/blower assembly moves the indoor air through the system.