HOME
COMFORT
SENSOR
THE TRANE COMPANY
Unitary Products Group
6200 Troup Highway
Tyler, TX 75707
An American-Standard Company
©
American Standard Inc. 1999 P.I. 11/99
Pub. No. 22-5191-01
ZUSTATALS510
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 1
TABLE O
F
CONTENTS
1 ............................................................................. Introduction
2–3......................................................................... Getting Started
4–8......................................................................... Basic Procedures
9 ............................................................................. Changing Setpoints
10–12..................................................................... System Set-Up
13–16..................................................................... Other Features
17 ........................................................................... Factory Settings and Specifications
18 ........................................................................... Index
Page
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 2
INTRODUCTION
How do we know?
Well, for one thing you just bought a Trane
Home Comfort Sensor, the communications inter-
face for the Trane Integrated Comfort System.
This means you’ve opted for energy efficiency,
lower utility bills and doing a little something to
save the planet–all in one bold move.
As you know, this is an instruction manual for
the Home Comfort Sensor.
Even the most intuitive trailblazers need
a road map sometimes, so this manual was
designed to be as self-explanatory as possible.
The Home Comfort Sensor is a computer, but
that’s the last time we’ll mention it. These
instructions are in plain English with only a cou-
ple of unusual words like setpoint and LCD. No
technical talk, no complicated diagrams. All you
have to do to become a Home Comfort Sensor
expert is follow the simple steps in this booklet.
But before we begin, you might want to spend
a few moments looking over the glossary of terms
on the next page. It will make those unusual
words we mentioned earlier more meaningful.
You’re a very bright person.
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 3
GETTING
STARTED
You can start by pushing the right buttons.
Adjusts settings in various modes;
pressed once, they reveal current set-
points; pressed more than once they
temporarily adjust temperature settings.
Selects operational modes: cool, heat,
auto, emergency heat, & off.
Toggles between automatic or
continuous fan operation.
Displays outside temperature.
Initiates setting the clock.
Returns normal display to the Liquid
Crystal Display (LCD).
Note: The flashing green light in the
lower right corner indicates your sensor
is communicating with the system.
How To Bring The Home Comfort Sensor, To Life.
2
Clock
Heat/Cool
Exit
Fan
Outdoor
Temp
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 4
For one thing, it can take a load off your mind.
Once you’ve entered the setpoints on the Home
Comfort Sensor, it will maintain comfort control
for you. It will adjust your home‘s heating and
cooling when it’s supposed to, and it won’t forget,
as a mere mortal might.
It will remember what you tell it, even during
emergencies. You’ll be happy to know that –
unlike your VCR and other electronic digital clocks
– the Home Comfort Sensor won’t forget its
setpoints during a power failure. You have plenty
of other things to worry about when that happens.
You probably won’t find the instruction manual
by then anyway, so that’s why we’ve included
three button batteries for power backup. Simply
install them and don’t worry about a power failure
knocking out your Home Comfort Sensor thermo-
stat. When the LCD clock flashes, it’s time to
replace your batteries and re-set your clock. But
even when you have to change your batteries, your
Home Comfort Sensor won’t forget its setpoints.
The Home Comfort Sensor spends
practically all of its time connected to AC house
power, but when the word Connect is displayed in
the lower left corner, your thermostat is running
on battery power and needs to be reconnected to
AC power. When the thermostat is running on
batteries, it will automatically go into a battery-
saving mode to extend the life of the batteries.
Don’t be alarmed if you see the word Off dis-
played on the front panel. This simply indicates
that the AC power is off. Press any key to exit the
battery saving mode.
The Home Comfort Sensor will stay in touch
with you and your home comfort system. A little
green light will flash to let you know it’s talking
with the heat pump or air conditioner. That’s
good. The last thing you want is a senseless
sensor.
What The Home Comfort Sensor Can Do For You:
3
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 5
BASIC
PROCEDURES
Start-up begins with four simple steps:
1. Find a comfortable, well-lit spot to
sit down with the Home Comfort Sensor and this
manual. (Relaxing in an easy chair is the most
comfortable way to meet new challenges.)
2. Remove the front of the Home Comfort
Sensor from its mounting bracket. On the back
side you’ll see the batteries on the left edge.
Remove the plastic insulating strip from between
the batteries. The Home Comfort Sensor will then
begin operating after a short delay.
Now you can adjust your setpoint and set the
clock right from the comfort of your easy chair.
3. This sensor has a back lit display. This will
help you see the LCD if the lighting is dim. It is
activated by pressing one of the keys on the key
pad and will be on for approximately 25 seconds.
4. Read on.
Ready, Set…Relax.
4
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 6
BASIC
PROCEDURES:
C
LOCK
HOW DO I MAKE IT STOP FLASHING?
Answer: Tell the Home Comfort Sensor what
time it is.
TIME, PLEASE?
CLOCK triggers the Set Time mode. It
also hides everything else on the LCD so
you can focus on the job at hand.
Keep pressing CLOCK. Whatever flashes
– digits or words – may be set with the
UP or DOWN ARROW keys.
Settings go in the following order:
hours, minutes, days. But you’ve
probably already figured that out.
The clock is preset to display
standard time. If you prefer a
24-hour clock (military time),
see page 11.
EXIT locks in the correct time and day,
as well as returns normal display to
the LCD.
Your First Question Is Probably Going To Be:
5
Clock
Exit
Set Time
Mon
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 7
BASIC
PROCEDURES:
M
ODE
Depends on the season, right?
HEAT/COOL sets the mode, just as the
flip switch did on your old thermostat.
But HEAT/COOL gives you more options.
As you press HEAT/COOL,
the LCD offers
• Cool
• Heat
• Auto – the Home Comfort
Sensor decides which mode,
cooling or heating, is needed
to maintain the setpoint; an
excellent feature for
in-
between
seasons when days are warm
and nights are chilly.
• Emergency Heat (Emerg Ht) –
directs the auxiliary heat
source to kick in (if your system
has one). The compressor
won’t run in this mode.
• Off
What Makes You Comfortable?
6
Heat/Cool
Heat/Cool
Wed
Cool
Wed
Heat
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 8
BASIC
PROCEDURES:
F
AN
FAN toggles between:
• Fan On – the fan runs
continuously, going to 50
percent speed when the
compressor isn’t running
• Automatic – the fan runs
only when the compressor
is on
Fan On is displayed when the fan is
in continuous operation.
How’s Your Circulation?
7
Fan
AM
Sat
Cool
AM
Sat
Cool
Fan On
Fan
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 9
BASIC
PROCEDURES:
T
EMPERATURE
•To check the outdoor temperature,
press OUTDOOR TEMP. The outdoor
temperature ranges from -20° F to
120° F. (Note: If the outdoor sensor is
not installed, the outdoor tempera-
ture displayed on the thermostat will
be -13° F or below) Press OUTDOOR
TEMP again or EXIT to return to the
normal LCD display. Or wait a minute,
and the normal LCD display will return
on its own.
•Setpoints are the heating and cooling
temperatures you prefer. Press either
ARROW once to see the setpoint of
the current mode (cooling or heating).
They are displayed by the set of flash-
ing numbers on the left, next to the
words Set Pt. The actual indoor tem-
perature is indicated on the right.
Press the HEAT/COOL button to toggle
between heating and cooling setpoints.
Press EXIT when you’ve seen enough.
A Matter Of Degrees.
8
Outdoor
Temp
Heat/Cool
Exit
Outdoor Temp
Set Pt
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 10
CHANGING
SETPOINTS
Maybe you wish the temperature were dif-
ferent. Here’s how to change the setpoints from
the factory settings.
•Press either ARROW, and you’ll see
the current setpoint on the left side of
the LCD (next to Set Pt.).
•Toggles display from heating to cool-
ing back to heating setpoints.
The current indoor temperature is
to the right.
•Press the appropriate ARROW
to change the setpoint temperature of
the required mode (Heating or
Cooling).
•Press EXIT once you have reached
your setpoint and wish to return to the
LCD’s normal display.
Note: The Cooling setpoint will always be at
least four degrees higher than the Heating set-
point. If one setpoint infringes on the required
four-degree separation, the Home Comfort Sensor
will automatically adjust the other to maintain the
difference.
Change Can Do A Body Good.
9
Exit
Heat/Cool
Cool
Set Pt
AM
Tue
Cool
Exit
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 11
SYSTEM
SET-UP
Let’s say you prefer military time on your LCD
clock. Or you’d rather see the temperature in Cel-
sius degrees. Or you think the temperature read-
ing needs adjusting. Or you just feel like going
beyond the basics.
•While holding down EXIT, press OUT-
DOOR TEMP. Hold both keys simulta-
neously until System Set-Up appears
in the upper left corner of the LCD.
(This will take approximately three
seconds.)
Now the Home Comfort Sensor will begin to
talk to you. Watch for messages where the clock
is normally displayed.
•The first Set-Up, indoor temperature
calibration, is best left to professionals.
But if
you
and your independent ther-
mometer say the Home Comfort Sensor
is off and you really want to change it
yourself, use the ARROW keys to
change the calibration of the indoor
temperature sensor. You’re in this mode
when the letters CAL appear.
Getting Really Fancy.
10
Exit
Outdoor
Temp
SYSTEM SET-UP
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 12
SYSTEM
SET-UP
•Press HEAT/COOL for the next Set-Up,
which is the time format. If you oper-
ate on a 24-hour clock and you don’t
have to think twice to remember that
1500 hours means 3:00 p.m., this
one’s for you. When the letters hr
appear, press either ARROW to toggle
between 12 and 24 to choose the
number of hours on your clock.
•Press HEAT/COOL again to initiate the
next Set-Up which enables you to
change from Fahrenheit to Celsius.
When the word Temp comes up under
the clock, press the ARROW keys to
choose between F and C.
11
Heat/Cool
Heat/Cool
SYSTEM SET-UP
Here’s something you need to know:
When you change this setting, all of the set-
points will revert to factory settings.
You may also lose factory calibrations.
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 13
SYSTEM
SET-UP
•Press HEAT/COOL again andyou’ll see
Addr for the zone address. The only rea-
son to adjust this Set-Up is if your home
has more than one heating/cooling
zone.
Most Home Comfort Sensors control only one
zone anyway, so leave this one on the factory set-
ting (01). If you have more than one zone, this is
an adjustment best left to technicians.
•Press EXIT to return to normal
operations.
You have now completed the set-up and
scheduling of your Home Comfort Sensor. Replace
the unit to its mounting bracket. When the word
“connect” disappears, your Trane Integrated
Comfort System is ready for operation.
12
Heat/Cool
Exit
SYSTEM SET-UP
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 14
OTHER
FEATURES
•The speed bar (System Speed %) along
the bottom of the LCD tells you what
capacity and speed your compressor is
operating. The lowest operating speed
is 50 percent.
•Aux Ht (auxiliary heat) lights up when
any kind of supplemental heating kicks in.
•Service lights up as a cry for attention.
Refer to the Troubleshooting section.
•Connect, which lights up in the lower
left corner of the LCD, signals the
Home Comfort Sensor is operating
on batteries. Either the unit is not
properly connected to its base, or
your building power has gone out.
If everything else checks out, this
could mean a bad power connection.
Call your Trane dealer for service.
Other Things That May Come Up.
13
Mon-Fri
Wake
SERVICE
Wed
Cool
Aux Ht
10 20 30 40 50 60 70 80 90
100
System Speed %
Wed
Cool
Connect
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 15
OTHER
FEATURES
•When the Home Comfort Sensor is running
on batteries, it will automatically kick into
a power-conserving mode if no buttons
have been activated within one minute. If
the clock says Off, the system is conserv-
ing its batteries. Press any key to restore
the LCD to its normal display.
•If you’re planning to connect the Home
Comfort Sensor to a home automation sys-
tem, this equipment may override the Home
Comfort Sensor scheduling capabilities.
Some of what you’ve learned so far may
not apply if the home automation system
overrides the thermostat functions.
14
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 16
OTHER
FEATURES:
T
ROUBLE-
SHOOTING
The LCD says the Outdoor Temperature is
-13° F or below.
• The system is not connected
to an outdoor sensor.
The green light stops flashing.
• Call a technician.
Whenever unwanted words appear on
the LCD.
• Pressing EXIT will usually return the
LCD to its normal display.
The word Off appears where the clock
should be on the LCD.
• The unit is operating on bat-
tery power and no key has
been pressed for more than
one minute.
The word Connect lights up on the LCD.
• The Home Comfort Sensor
is disconnected from house
power and running on batteries.
Troubleshooting.
15
Exit
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 17
OTHER
FEATURES:
T
ROUBLE-
SHOOTING
The setpoint isn’t where you thought you
set it.
• You may have set the Heating
and Cooling setpoints less
than four degrees apart so
the Home Comfort Sensor
automatically adjusted one
of your points.
The word Service flashes.
• Press HEAT/COOL and set
the operating mode to Off
or Emerg Ht. If Service still
flashes, call your Trane
dealer for service.
16
Heat/Cool
Wed
Cool
SERVICE
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 18
FACTORY
SETTINGS AND
S
PECIFICATIONS
17
Default Settings (Factory)
Cooling
76°F / 25°C
Setpoint
Heating
70°F / 21°C
Setpoint
DEFAULT SET-UP MODE SETTINGS
• Fahrenheit Temperatures
• 12 Hour Time
• 01 Zone Address
REPLACEMENT BATTERIES
Eveready
#357VP
#A76VP
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 19
INDEX
Addr 12
ARROW keys 2
Auto 6
Aux Ht –Auxiliary Heat 13
Batteries 3, 17
CLOCK key 2
Connect 15
Cool 6
Emerg Ht –Emergency Heat 6
EXIT key 2
FAN key 2
FAN ON 7
Four-degree buffer zone 9
Heat 6
HEAT/COOL key 2
Home automation systems 14
Indoor temperature calibration 10
LED light 2
Military time 11
Outdoor Temp 8
OUTDOOR TEMP key 2
Power-conserving mode 14
SERVICE 16
Setpoints 9
Set Time 5
Speed bar 13
SYSTEM SET-UP 10
System Speed % 13
Temperature format 11
Time format 11
TIME/TEMP key 2
Troubleshooting 15
Zone address 12
18
15345 ZUSTATALS51Ø Manual 2/22/05 8:28 AM Page 20
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