2TWB0-UM-2
Use and Care
Weathertron® Heat Pump
22-5202-02-1003 (EN)
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How it works to
keep you comfortable
Congratulations on the purchase of your new Trane heat pump.
Your heat pump is designed to work with a matched indoor unit
creating a system that delivers years of dependable service
and performance.
The heat pump is an air conditioning system that both heats and cools. It uses electric
energy to move the heat that already exists.
During the winter, the heat pump extracts the heat present in cold winter air and pumps
the heat into your home. (Yes, there’s heat in the air even in the coldest weather.) In
summertime, it functions as a conventional air conditioner, pulling the heat out of your
home and releasing it outside.
It heats in winter.
Your heat pump also filters and dehumidifies.
When the Weathertron® heat pump circulates air, it also filters it. And since the heat
pump is an air conditioner, it extracts excess moisture from the home, to help control
humidity in muggy summer months.
Acquaint yourself with your new system by spending just a few minutes with this
booklet. Learn about the operation of your system and the small amount of mainte-
nance it takes to keep it operating at peak efficiency.
It cools in summer.
Proper maintenance for
maximum efficiency
A heat pump is not a household appli-
ance. It’s a self-contained system that
requires professional maintenance
and repair.
Help ensure top efficiency by cleaning
or replacing the filter monthly.*
When the heat pump circulates and
filters the air in your home, dust and
dirt particles build up on the filter.
Excessive accumulation can block the
airflow, forcing the unit to work harder
to maintain desired temperatures. And
the harder your unit works, the more
energy it uses.
That’s why attempts at “do-it-yourself”
repairs on an in-warranty unit may void
the remainder of your warranty.
Other than performing the simple main-
tenance recommended in this manual,
you should not attempt to make any
adjustments to your heat pump system.
Your dealer will be able to take care of
any questions or problems you may have.
Clean or replace your filter twice a
month during seasons when the unit
runs more often.
Efficiency can be maintained by
keeping outdoor unit clear of snow,
ice and debris.
When replacing your filter(s), always
use the same size and type that was
originally supplied. Filters are available
from your dealer.
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▲
CAUTION
To prevent injury, death, or property damage, read
and follow all instructions and warnings, including
labels shipped with or attached to unit before
operating your new air conditioning system.
Efficient operation of your heat pump
depends on the free flow of air over the
coil. Anything that blocks the airflow,
causes the compressor to work harder to
move the warm air out of your house.
Where disposable filters are used, they
must be replaced every month with the
same size as originally supplied.
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▲
WARNING
Disconnect all electrical power to the indoor air
handler or furnace before removing access panels
to perform any maintenance. Disconnect power to
both the indoor and outdoor units. NOTE: There
may be more than one electrical disconnect
switch. Electric shock can cause personal injury
or death.
How to remove your filter.*
Buildup of snow and ice can restrict
airflow. As soon as possible after accu-
mulation, clean snow from the area
around the heat pump.
Ask your Trane dealer where the filter
is located in your system and how to
service it.
Just be sure to replace it with the arrows
pointing in the direction of the airflow.
To avoid overworking your unit, do not
plant flowers or shrubbery right next to it.
Also, make sure that nothing is stacked
against the sides of the unit or draped
over it.
!
▲
CAUTION
Although special care has been taken to minimize
sharp edges in the construction of your unit, be
extremely careful when handling parts or reaching
into the unit.
* Before removing the filter, see the owners manual
furnished with the indoor unit.
22-5202-02-1003 (EN)
3
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Proper maintenance (cont.)
Making sure your outdoor unit is kept
clear at all times helps it work at peak
efficiency.
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▲
CAUTION
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▲
WARNING
Condensate drains should be checked and cleaned
periodically to assure condensate can drain freely
from coil to drain. If condensate cannot drain freely,
water damage could occur.
Improper installation, 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 or service agency for
information or assistance. The qualified installer
or agency must use factory-authorized kits or
accessories when modifying this product.
Keep your heat pump looking
new for years.
Clean the enamel finish of your heat
pump with soap and water. For stubborn
grease spots, use a household detergent.
Do not use lacquer thinner or other
synthetic solvents as they may damage
the finish.
• Inspection and cleaning of the blower
wheel, housing, and motor as required.
• Inspection and, if required, cleaning of
indoor and outdoor coils.
• Inspection of the indoor coil drain pan,
plus the primary and secondary drain
lines. If supplied, the auxiliary drain pan
and line should be inspected at this
time. Service should include cleaning,
if required.
• A check of all electrical wiring and
connections.
• A check for secure physical connections
of individual components within units.
• Operational check for the heat pump
system to determine actual working
condition. Necessary repair and/or
adjustment should be performed at
this time.
• Your servicing dealer may offer an
economical service or preventative
maintenance agreement that covers
seasonal inspections. Ask your
dealer for further details.
Call your dealer for additional
routine maintenance
Your heat pump system should be
inspected regularly by a properly trained
service technician. The inspection
(preferably twice each year, but at
least once a year) should include
the following:
• Routine inspection of air filter(s).
Replacement or cleaning as required.
How to operate your system
for peak performance
Setting the temperature
Let the thermostat do its job.
more hours after the power has been
restored before turning the thermostat
back on. Failure to follow this procedure
could result in damage to your system.
Place the system switch on COOL, and
the fan switch on AUTO. Then set the
temperature by using the indicator on the
thermostat* control.
Your system will perform most efficiently
when you let the thermostat control it.
Turning the system on and off manually
is usually much less efficient. So let the
thermostat do its job.
!
▲
CAUTION
Now your system will cool your house
whenever the indoor temperature climbs
above the thermostat setting. It will shut
off when the desired room temperature is
reached.
If heating system is not operational during the cold
weather months, provisions must be taken to
prevent freeze-up of all water pipes and water
receptacles. This is very important during times
of vacancy.
We recommend keeping the temperature
setting at 78°F for cooling, 68°F for heat-
ing. However, you can select the tem-
perature that meets your comfort level.
In winter, it works the same way. When
the system switch is on HEAT, the
system will operate whenever the room
temperature falls below the temperature
setting. Once the desired temperature is
reached, the system will shut off.
The point is, once you’ve set the thermo-
stat, keep subsequent adjustments to
a minimum.
How to help reduce summer humidity.
In summer, your heat pump does more
than cool the air — it helps remove the
excess moisture, that can make the
inside of your home feel muggy. When
removing this moisture your system must
work harder than when simply cooling
the air.
When you’re going to be away from
home for a few days, or when outdoor
temperatures are moderate, don’t let the
air conditioner run unnecessarily. Lower
the thermostat to 55°F in the winter. And
raise it to 85°F in summer. Then when
you return, or when temperature condi-
tions dictate, you can reset the system
and it will resume making your home
comfortable again.
Save energy with an electronic
programmable thermostat.*
Program the thermostat for the tempera-
tures that meet your comfort level. The
Trane electronic programmable thermo-
stat has up to four setup or setback
periods each day, plus weekend and
vacation programs.
That’s why kitchens, bathrooms and
utility rooms should have vents and ex-
haust fans. These devices help prevent
accumulation of moisture throughout the
rest of the house so your air conditioner
works less to keep you comfortable.
Never stop the system by shutting off
the main power.
If the main power is ever disconnected
for more than three hours, turn off the
thermostat. Then wait for at least three
* Accessory, purchased separately. Carefully read the
accompanying thermostat manual for complete
operating instructions.
4
22-5202-02-1003 (EN)
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The Problem Solver
Before you call for service, check the following:
Reduce the burden of
unexpected repair bills with
a Trane Extended Warranty.
Trane offers the finest quality products
and manufacturer’s warranties on the
market. But, like all good things, the
Trane-provided limited warranty on your
new comfort equipment will come to an
end. To keep you protected, Trane offers
the Extended Warranty Program. It picks
up right where your Trane limited
Problem
Possible cause
Remedy
Insufficient heating
or cooling
a. dirty filters
b. air not circulating freely
a. clean or replace
b. check supply registers and return
grills for blockage
c. blocked outdoor coil
a. power off
c. clear away leaves or other debris
Failure to operate
a. make sure main switch is in
ON position
b. open circuit breaker or
burned-out fuses
c. improperly adjusted
thermostat
b. reset circuit breaker, or replace
burned-out fuses
c. check setting, adjust thermostat
warranty leaves off. And, it offers years
and years of reliable protection at a low
cost. Ask your dealer for program details.
Blue auxiliary heat
light on
When outdoor temperature Monitor light. If it stays on continuously
falls, intermittent lighting
is normal
when above 30°F, or if it comes on
when 50°F outdoors, call for service.
No Heating or
Cooling – Blower
does not operate
Blower door removed
or ajar
Close door securely to restore power
to blower
Unusual Noise
Call your local servicer
Extra Energy Tips
Insulation
Cooling
13. Set the thermostat as high as
of still air will cut heat transfer
considerably.
1. Make sure your home is properly
insulated. This is the single most
important step in conserving
energy. Thermal insulation should
be specified in terms of thermal
resistance (R-values). R-30 (10")
is recommended for ceilings, R-11
(3-1/2) for exterior walls and floors
over unheated areas. In colder
climates, consider additional
insulation.
comfort will permit.
5. Install storm doors at all entrances
to your house.
14. Make sure attics are adequately
ventilated to relieve heat buildup.
If necessary, improve airflow by
adding or enlarging vents.
6. Keep all windows and doors closed.
7. Remember that by increasing the
glass area, you increase the amount
of heat added in summer and lost
in winter.
15. When building a new house or
renovating an old one, choose
light-colored roof shingles to reflect
more of the sun’s heat.
8. Make sure fireplaces have tight-
fitting dampers which can be closed
when the fireplace is not in use.
16. During moderate weather, don’t use
the air conditioner unnecessarily.
2. Infiltration of humid outside air is
your heating and cooling system’s
worst enemy — it could account for
15 to 30% of air conditioning energy
requirements. Find the places where
air can sneak into the home and
plug them with caulking, weather-
stripping or plastic. Also, weather-
strip and caulk around all entrance
doors and windows.
9. Invest in a humidifier to conserve
energy in winter. The air in your
home won’t be as dry, so you stay
comfortable at a lower temperature
setting.
17. Draw blinds or drapes to block the
sunlight during the hottest part of
the day.
18. Install awnings over windows
exposed to direct sunlight.
Heating
10. Locate the thermostat on an inside
19. In the cooling season, don’t run
kitchen and bath exhaust fans
longer than necessary.
wall away from windows and doors.
3. Cut heat transfer through your
windows by 40 to 50% with double
glazing (two panes of glass sepa-
rated by a sealed air space) and
low-e glass.
11. Set the thermostat as low as comfort
permits. Each degree over 68°F can
add 3% to the amount of energy
needed for heating.
20. Don’t place lamps, TV sets or other
heat producing devices beneath a
wall-mounted thermostat. Rising
heat from the equipment may
cause the heat pump to over cool
your house.
12. People generate heat. So lower the
thermostat a degree or two when
expecting a large group of guests.
4. Use wood- or metal-frame storm
windows even if single-glazed
windows are high quality. The
extra layer of glass and the layer
22-5202-02-1003 (EN)
5
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Important Service Information
It’s always a good idea to keep records — it will save you time and money. If it’s necessary to have your air conditioner repaired, the
serviceman will want to know if your unit is still under Warranty. Take a few minutes to record the following information here:
Outdoor Model Number ___________________________________________________________________________________
Indoor Model Number ____________________________________________________________________________________
Thermostat Model Number ________________________________________________________________________________
Date of Purchase ________________________________________________________________________________________
Dealer ________________________________________________________________________________________________
Service Information
Call your installing dealer if the unit is inoperative. Before you call, always check the following to be sure service is required:
a. Be sure the main switch that supplies power to the unit is in the ON position.
b. Replace any burned-out fuses or reset circuit breakers.
c. Be sure the thermostat is properly set.
Service Phone __________________________________________________________________________________________
Literature Order Number
File Number
2TWB0-UM-2
P.I.
SV-UN-S/SP-2TWB0-UM-2 3/03
2TWB0-UM-1
Supersedes
Stocking Location
PI Louisville & Webb/Mason-Houston
Trane
A business of
American Standard Companies
Trane has a policy of continuous product and product data improvement and it reserves the right to change
design and specifications without notice.
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