Carrier 25VNA8 infinity 18VS Owner's Manual page 2

SOUND
Your new Infinity 18VS heat pump is different from most heating
and cooling systems. Because this is a variable speed system, it is
designed to operate at different speeds depending on the
temperature and humidity conditions. You may notice the sound
coming from the outdoor unit changing from time to time, and
from season to season. In winter, the system will operate at higher
speeds as it gets colder outside to maintain its heating performance.
The higher speed produces a higher sound. This change of speed
allows the system to operate more efficiently and maintain
comfortable conditions inside the home. You may also hear a
slight hissing sound when near the outdoor unit in the off- -cycle.
This is the sound of system pressure equalization which is required
to enable soft and easy starting of the next cycle. These sounds are
normal and do not represent a problem with your system.
ROUTINE MAINTENANCE
Simple, routine maintenance as described below will enhance your
heat pump system's ability to operate economically and
dependably. Always remember the following safety precautions:
WARNING
!
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
Before installing, modifying, or servicing system, main
electrical disconnect switch must be in the OFF position.
There may be more than 1 disconnect switch. Lock out and
tag switch with a suitable warning label.
NOTE: There may be more than one electrical disconnect switch.
Thermostat
Disconnect
Fig. 1 - - Electrical Disconnects
CAUTION
!
CUT HAZARD
Failure to follow this caution may result in personal injury.
Although special care has been taken to minimize sharp edges
in the construction of your unit, be extremely careful and wear
appropriate protective clothing and gloves when handling
parts or reaching into the unit.
Main
Disconnect
Indoor
Outdoor
Disconnect
A07903
S Keep Filter Clean
A clogged or improperly installed air filter on your indoor unit will
increase operating costs and shorten the life of the unit. For
detailed filter cleaning information refer to indoor unit literature.
S Do Not Block Floor, Wall or Ceiling Vents
When drapes, furniture, toys or other common household items
block vents, the restricted airflow lessens the system's efficiency
and life span.
S Do Not Cover or Block Outdoor Unit
The outdoor unit needs unrestricted airflow. Do not cover it or
place items on or next to it. Do not allow grass clippings, leaves, or
other debris to accumulate on the sides or top of the unit. And,
maintain a 12" (304.8 mm) minimum clearance between the
outdoor unit and tall grass, vines, shrubs, etc.
S Check Condensate Drain
Your heat pump removes humidity from your home during the
cooling season. After a few minutes of operation, water should
trickle from the condensate drain of the indoor coil. Check this
occasionally to be sure the drain system is not clogged. Drainage
will be limited if you live in a very dry environment.
S Do Not Operate Below Minimum Operating Temperatures
in Cooling Mode
Your outdoor unit is not designed to operate below the minimum
temperatures shown below. The minimum temperature depends on
which wall control is being used:
— With Infinity Touch Control: 40_F (4.4_C)
— With Thermostat Control: 55_F (12.8_C)
System protections may not allow the unit to operate below these
minimum temperatures.
S Do Not Operate Above 66°F/18.89_C in Heating Mode
Your outdoor unit is not designed to operate on heating mode
when outdoor temperatures are higher than 66°F (18.9_C). You
can safely operate the system above 66°F (18.9_C) on emergency
or auxiliary heat.
S Minimum Heating Temperature
This unit is not designed to operate at extreme cold outdoor
temperatures. When the outdoor temperature is below 10_F
(- -12.2_C) the unit control may automatically shut the heat pump
off and energize auxiliary heat to maintain the desired temperature
set point inside the home.
S Base Pan Drainage
Periodically check for and remove debris that has settled around
the base of your outdoor unit. This will ensure proper drainage of
the base pan and eliminate standing water inside the outdoor unit.
S Level Installation
Your Carrier dealer will install the outdoor unit in a level position.
If the support base settles or shifts and the unit is no longer level,
be sure to re- -level it promptly to assure proper drainage. If you
notice water or ice collecting beneath the unit, arrange for it to be
drained away from the unit.
SEA COAST COIL MAINTENANCE
Coastal locations often require additional maintenance of the
outdoor unit due to highly corrosive airborne ocean salt. Although
your new Carrier system is made of galvanized metal and is
protected by top- -grade paint, take the additional precaution of
periodically washing all exposed surfaces and the outdoor coil
approximately every 3 months. Consult your installing Carrier
dealer for proper cleaning intervals and procedures for your
geographic area or ask about a service contract for regularly
scheduled professional cleaning and inspections.
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