Carrier 2000 User Manual

Carrier

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WBATtSRMASTER^

2000

A GUIDE TO OPERATING

AND MAINTAINING

YOUR TRIPLE-SPLIT

WELCOME TO EFFICIENT YEAR-ROUND COMFORT

Congratulations on your excellent choice and sound invest
ment in year-round home comfort!

Your new heat pump represents both the latest in engineer
ing development and the culmination of many years of expe
rience from one of the most reputable manufacturers of
comfort systems.

Your new unit is among the most energy-efficient and reli
able heat pump products available today. To assure its
dependability, spend just a few minutes with this booklet
now. Learn about the operation of your heat pump, and the
small amount of maintenance it takes to keep it operating at
its peak efficiency.

With minimal care, your new heat pump will provide you
and your family with year-round home comfort—both now
and for years to come.

A WARNING

Improper instedlation, adjustment, alteration, service,
maintenance or use can cause explosion, fire, electrical
shock, or other conditions which may cause personal
injury or property damage. Consult a qualified installer,
service agency or your distributor or branch for infor
mation or assistance. The qualified installer or agency
must use factory authorized kits or accessories when
modifying this product.

A WARNING

To prevent personal injury, death, or property damage,
before operating your new heat pump, read and follow
all instructions and warnings, including labels shipped
with or attached to unit.

YOUR COMFORT SYSTEM

Identifying Your System

Take the time to familiarize yourself with the type of sys
tem you have. This knowledge will be of use in understand

ing the basic operation of your new heat pump.

The triple split-system type has an indoor fan coH, indoor
compressor section and an outdoor unit, two of which con
tain a coil. These units are interconnected by refrigerant
tubes, as shown in Fig. 1.

Fig. 1—Triple Split-System Installation

Each unit has a rating plate affixed to it. A rating plate pro
vides necessary information for specific identification of a
unit. You should familiarize yourself with the product,
model, and serial numbers listed on each rating plate.

IMPORTANT FACTS

To better protect your investment and to eUminate unneces
sary service calls, familiarize yourself with the following
facts:

• Your heat pump system should never be operated with
out a clean air filter properly installed. Plan to inspect the
filter periodically. A clogged air filter will increase operating
costs and shorten the life of the unit.

• Supply-air and return-air registers should not be
blocked. Drapes, furniture, and toys are some of the items
commonly found obstructing grilles. Eestricted airflow less
ens the unit’s efficiency and life span.

• The outdoor unit must have unrestricted airflow. Do not
cover the unit, lean anything against it, or stand upon it. Do
not allow grass clippings, leaves, or other debris to accumu
late around or on top of the unit. Maintain a twelve-in. mini
mum clearance between the outdoor unit and tall grass,
vines, shrubs, et cetera.

• Yom multipurpose indoor thermostat is the control cen
ter for your heat pump system. You should familiarize your
self with its proper operation. Attempting to control the
system by other means—for instance, switching the electri
cal supply power ON and OFF—may cause damage to the

unit.

• Thermostat “jiggling” causes rapid-cycling, which is

potentially damaging to the compressor. Do not move the
temperature selector on the thermostat for any reason for at
least 5 minutes after the compressor has shut oflf.

• During the heating season, never increase the indoor

thermostat setting more than one or two-degree increments.

If larger adjustments eire made, the supplementary heating

somrce will be turned on automatically. Needless use of the
supplementary heat reduces potential energy savings.

• You may find that you can maintain greater personal

comfort by running the fan continuously. “Air pockets” can
form due to the structure of the house, placement of regis
ters, et cetera. These air pockets may be too cool or warm
for your liking. Continuous fan operation minimizes any
temperature differences. Also, systems equipped with elec
tronic air cleaners and/or humidifiers offer the added bene
fits of having the air continuously cleaned year-round, and
humidified dmring the winter season.

• Your heat pump will remove humidity from your home

during the cooling season. After a few minutes of operation,
you should be able to see water trickle from the condensate
drain of the cooling coil. Check this occasionally to be sure

the drain system is not clogged. Of course, don’t expect to
see much drainage if you live in a very dry environment.

• During the heating cycle, air from your registers may

seem cooler than you might first expect. This is because the

air is being delivered at a higher velocity and a more con
stant flow than air supplied by a conventional furnace. Also,

your heat pump supplies air at 85 to 90 degrees Fahrenheit
instead of in sudden bursts of hot air as with a conventional

furnace. The air may feel cool because it is slightly less than

your body temperature. However, it is sufficiently warm to
keep you comfortable.

• Ice or frost wiU tend to form on the outdoor coil during
the winter heating operation. Your heat pump is designed to
automatically melt the ice. When in this defrost cycle, it is

<@>

Fig. 2—Manual Changeover

Thermostat

normal for steam or fog to rise from the outdoor unit. Do
not be alarmed!

• Do not operate your unit in cooling mode when outdoor

temperatures are below 55 F.

• Do not operate your unit in heating mode when outdoor

temperatures are above 66 F.

OPERATING YOUR HEAT PUMP

The operation of your heat pump system is controlled by
the indoor thermostat. You simply adjust the thermostat
and it maintains the indoor temperature at the level you

select. Most thermostats for heat pump systems have four

controls. These are the temperature control selector, FAN

switch, SYSTEM switch, and EMERGENCY HEAT

switch.
The temperature control selector is a dial or lever that

allows you to establish the degree of temperature that you

wish to maintain for your personal comfort. Some thermo

stats possess two temperature control selectors: one for set
ting the temperature desired during the cooling cycle, and
one to set the heating operation temperature. Typical set
tings are 78 degrees Fahrenheit for cooling and 68 degrees
for heating.

The FAN switch offers two options for controlling the
blower: AUTO and ON. When set to AUTO, the blower will
run during the time the heat pump is operating. When the
FAN switch is set at the ON position, the blower will run
continuously.

Typically, the SYSTEM switch on your thermostat offers
the following selections: COOL, OFF, and HEAT. Your
thermostat may also have a fourth selection, AUTO. The
heat pump will not operate when the SYSTEM switch is set
at the OFF position. With the SYSTEM switch set at
COOL, your heat pump will operate in its cooling mode
when the indoor temperature rises above the level that you
wish to maintain. With the SYSTEM switch set at the
HEAT position, your heat pump will provide warmth when
ever the indoor temperature falls below the level that you
have selected.

The AUTO selection found on some thermostats provides
for automatic changeover between cooling and heating
cycles. With the SYSTEM switch set in the AUTO position,
the cooling mode is activated when the indoor temperature
rises above the thermostat cooling temperature setting, or

the heating mode will be activated when the indoor tempera
ture drops below the thermostat setting for the heating
cycle.

Depending on your typical winter heating needs, your home
comfort system may include a supplementary heating
source. The EMERGENCY HEAT switch provides for con
venient selection between the two heating appliances. Your
heat pump wiU operate when the switch is set at NORMAL.
With the switch set at the EMERGENCY HEAT position,
the heat pump will ttun off and the supplementary heat
source will be activated.

COOLING CYCLE

When operating in the cooling cycle, your heat pump will
run until the indoor temperature is lowered to the level you
have selected. On extremely hot days, your conditioner will
run for longer periods at a time and have shorter “off” peri
ods than on moderate days.

The following are typical conditions that add extra heat

and/or humidity to your home. Your cooling unit will work
longer to keep your home comfortable under these
conditions:

• Entrance doors are frequently opened and closed

• Laundry appliances are being operated

• A shower is running

• More than the usual number of people are present in the

home

• More than the normal number of electric lights are in

use

• Drapes are open on the sunny side of the home

HEATING CYCLE

With the SYSTEM switch of your indoor thermostat set to
the HEAT position, the heating section of your home com
fort system will operate until room temperature is raised to
the level you have selected. Of course, the heating unit will
have to operate for longer periods to maintain a comfortable
environment on cooler days and nights than on moderate
ones.

Refer to your furnace user’s manual for specific information
on heating operation.

DEFROST CYCLE

When your heat pump is providing heat to your home and
the outdoor temperatmre drops below 45 degrees Fahren
heit, moisture may begin to freeze on the surface of the out

door coil. If allowed to build up, this ice would impede air

flow across the coil and reduce the amount of heat absorbed

Fig. 3—Main Electricai Disconnect