Trane 2Twb0 Um 2 Users Manual 22_5202_02_kit.p65

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2TWB0-UM-2

Use and Care
Weathertron® Heat Pump

22-5202-02-1003 (EN)

Contents
Contents
Proper Maintenance ............................. 3

LIMITED WARRANTY
TRANE WEATHERTRON® HEAT PUMP
2TWB0 & 2TWB2

Peak Performance ................................ 4

Models Less Than 20 Tons for Residential Use*
(Parts Only)

How It Works ........................................ 3

Problem Solver ..................................... 5
Extra Energy Tips ................................. 5
Service Information ............................... 6

Optional Extended Warranty
Optional Extended Warranties are
available from the Manufacturer. The
Extended Warranty can be purchased
from your dealer and is in effect when
you have received an Extended Warranty
Certificate from Trane. No additional
warranty, either written or implied,
is extended by the Manufacturer
without an Extended Warranty
Certificate from Trane. If you do not
receive your Extended Warranty
Certificate within 45 days of purchase,
please call 800-554-6413. For additional
information regarding the Extended
Warranty, see page 5.

This limited warranty is extended by Trane, a business of American Standard, Inc.,
to the original purchaser and to any succeeding owner of the real property to which
the Trane Weathertron® Heat Pump is originally affixed, and applies to products
purchased and retained for use within the U.S.A. and Canada.
If any part of your Trane Weathertron® Heat Pump fails because of a manufacturing defect within five years from the date of original purchase, Trane will furnish
without charge the required replacement part. Any local transportation, related
service labor, diagnosis calls, refrigerant and related items are not included.
If the sealed motor-compressor fails or if the outdoor coil should become defective,
either or both events occurring because of a manufacturing defect within five years
from the date of original purchase, Trane will furnish without charge the required
replacement compressor and/or outdoor coil. Any local transportation, related
service labor, diagnosis calls, refrigerant and related items are not included.
This limited warranty does not cover failure of your Trane Weathertron® Heat Pump
if it is damaged while in your possession, damage caused by unreasonable use of
the Trane Weathertron® Heat Pump and/or damage from failure to properly
maintain the Trane Weathertron® Heat Pump as set forth in the Use and Care
manual (see Proper Maintenance section).
This limited warranty applies to product installed on or after 10/1/2001 where
product is manufactured after 1/1/2000. This limited warranty is not retroactive to
any installations prior to 10/1/2001 or on product produced prior to 2000.

THE LIMITED WARRANTY AND LIABILITY SET FORTH HEREIN ARE
IN LIEU OF ALL OTHER WARRANTIES AND LIABILITIES, WHETHER
IN CONTRACT OR IN NEGLIGENCE, EXPRESS OR IMPLIED, IN LAW
OR IN FACT, INCLUDING BUT NOT SPECIFICALLY LIMITED TO
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
PARTICULAR USE, AND IN NO EVENT SHALL WARRANTOR BE
LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES.
Some states do not allow limitations on how long an implied limited warranty lasts
or do not allow the exclusion or limitation of incidental or consequential damages,
so the above limitation or exclusion may not apply to you. This limited warranty
gives you specific legal rights, and you may also have other rights which vary from
state to state.
Parts will be provided by our factory organization through an authorized service
organization in your area listed in the yellow pages. If you wish further help or
information concerning this limited warranty, contact:
Trane
A Business of American Standard Inc.
P.O. Box 9010, Tyler, TX 75711-9010
Attention: Manager, After Sales Support
Or visit our web site: www.trane.com/residential
TW-371-1003
* This limited warranty is for residential usage of this equipment and not applicable when this
equipment is used for a commercial application. A commercial use is any application where the
end purchaser uses the product for other than personal, family or household purposes.

© 2003 American Standard Inc. All Rights Reserved

2

22-5202-02-1003 (EN)

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.

It heats in winter.

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.
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 maintenance 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 appliance. It’s a self-contained system that
requires professional maintenance
and repair.
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 maintenance 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.
! 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.

! 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.

! 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.

22-5202-02-1003 (EN)

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.
Clean or replace your filter twice a
month during seasons when the unit
runs more often.
When replacing your filter(s), always
use the same size and type that was
originally supplied. Filters are available
from your dealer.
Where disposable filters are used, they
must be replaced every month with the
same size as originally supplied.
How to remove your filter.*
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.

* Before removing the filter, see the owners manual
furnished with the indoor unit.
3

Efficiency can be maintained by
keeping outdoor unit clear of snow,
ice and debris.
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.
Buildup of snow and ice can restrict
airflow. As soon as possible after accumulation, clean snow from the area
around the heat pump.
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.

Proper maintenance (cont.)
Making sure your outdoor unit is kept
clear at all times helps it work at peak
efficiency.
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.
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.

! CAUTION
▲

! 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.

• 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.

How to operate your system
for peak performance
Setting the temperature

Let the thermostat do its job.

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.

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.
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.
Save energy with an electronic
programmable thermostat.*
Program the thermostat for the temperatures that meet your comfort level. The
Trane electronic programmable thermostat has up to four setup or setback
periods each day, plus weekend and
vacation programs.
* Accessory, purchased separately. Carefully read the
accompanying thermostat manual for complete
operating instructions.

We recommend keeping the temperature
setting at 78°F for cooling, 68°F for heating. However, you can select the temperature that meets your comfort level.
The point is, once you’ve set the thermostat, keep subsequent adjustments to
a minimum.
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 conditions dictate, you can reset the system
and it will resume making your home
comfortable again.
Never stop the system by shutting off
the main power.

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.
! CAUTION
▲
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.

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.
That’s why kitchens, bathrooms and
utility rooms should have vents and exhaust fans. These devices help prevent
accumulation of moisture throughout the
rest of the house so your air conditioner
works less to keep you comfortable.

If the main power is ever disconnected
for more than three hours, turn off the
thermostat. Then wait for at least three
4

22-5202-02-1003 (EN)

The Problem Solver
Before you call for service, check the following:
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. clear away leaves or other debris

c. blocked outdoor coil
Failure to operate

a. power off

a. make sure main switch is in
ON position
b. reset circuit breaker, or replace
burned-out fuses
c. check setting, adjust thermostat

b. open circuit breaker or
burned-out fuses
c. improperly adjusted
thermostat
Blue auxiliary heat
light on

When outdoor temperature
falls, intermittent lighting
is normal

Monitor light. If it stays on continuously
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

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
warranty leaves off. And, it offers years
and years of reliable protection at a low
cost. Ask your dealer for program details.

Call your local servicer

Extra Energy Tips
Insulation
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.
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, weatherstripping or plastic. Also, weatherstrip and caulk around all entrance
doors and windows.
3. Cut heat transfer through your
windows by 40 to 50% with double
glazing (two panes of glass separated by a sealed air space) and
low-e glass.
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)

of still air will cut heat transfer
considerably.
5. Install storm doors at all entrances
to your house.
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.
8. Make sure fireplaces have tightfitting dampers which can be closed
when the fireplace is not in use.
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.

Heating
10. Locate the thermostat on an inside
wall away from windows and doors.
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.
12. People generate heat. So lower the
thermostat a degree or two when
expecting a large group of guests.

5

Cooling
13. Set the thermostat as high as
comfort will permit.
14. Make sure attics are adequately
ventilated to relieve heat buildup.
If necessary, improve airflow by
adding or enlarging vents.
15. When building a new house or
renovating an old one, choose
light-colored roof shingles to reflect
more of the sun’s heat.
16. During moderate weather, don’t use
the air conditioner unnecessarily.
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.
19. In the cooling season, don’t run
kitchen and bath exhaust fans
longer than necessary.
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.

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 __________________________________________________________________________________________

Trane
A business of
American Standard Companies
www.trane.com

Literature Order Number

2TWB0-UM-2

File Number

SV-UN-S/SP-2TWB0-UM-2 3/03

Supersedes

2TWB0-UM-1

Stocking Location

PI Louisville & Webb/Mason-Houston

Trane has a policy of continuous product and product data improvement and it reserves the right to change
design and specifications without notice.

P.I.



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