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installation, start-up and  
operating instructions  
COMMERCIAL THERMOSTAT  
(P/N TSTATBBPCM01-A)  
Cancels: New  
II TSTAT-1  
/15/96  
6
IMPORTANT: Read entire instructions before starting the  
installation.  
II. SET DIP SWITCHES  
There are 4 small switches on the back of the circuit board  
which must be configured by the installer. The ON position  
is indicated by small letters on the switch. Ignore the num-  
bers (1-4) on the switch. The switch designation (A-D) is printed  
on a sticker next to the switch. To change a switch position,  
use the corner of a small screwdriver to slide the switch  
ON or OFF. Set the DIP switches before installing the  
thermostat.  
SAFETY CONSIDERATIONS  
Read and follow manufacturer instructions carefully. Follow  
all local electrical codes during installation. All wiring must  
conform to local and national electrical codes. Improper wir-  
ing or installation may damage thermostat.  
Recognize safety information. This is the safety alert symbol  
.
When the safety alert symbol is present on equipment  
or in the instruction manual, be alert to the potential for per-  
sonal injury.  
A. Air Conditioner or Heat Pump Selection (Switch A)  
Use switch A to select between air conditioning and heat pump  
applications. A heat pump application uses a reversing valve.  
Set switch A to OFF for air conditioning applications (no re-  
versing valve). Set switch A to ON for heat pump applica-  
tions (O is used to energize the reversing valve). The factory  
setting is OFF.  
Understand the signal words DANGER, WARNING, and CAU-  
TION. These words are used with the safety alert symbol.  
DANGER identifies the most serious hazards which will re-  
sult in severe personal injury or death. WARNING signifies  
a hazard which could result in personal injury or death. CAU-  
TION is used to identify unsafe practices which would result  
in minor personal injury or property damage.  
B. Compressor Stage Selection (Switch B)  
Switch B is used to select between a single-stage and a 2-stage  
compressor. Set switch B to OFF for a single-stage compres-  
sor. Set switch B to ON for a 2-stage compressor. The factory  
setting is OFF.  
GENERAL  
Bryant’s 7-day, commercial, programmable thermostats are  
wall-mounted, low-voltage thermostats which maintain room  
temperature by controlling the operation of an HVAC (heat-  
ing, cooling and ventilation) system. Separate heating and  
cooling set points and auto-changeover capability allow occu-  
pied and unoccupied programming for energy savings.  
C. Outdoor Air or Remote Room Sensor (Switch C)  
Switch C is used to configure the thermostat to work with  
either a outdoor air sensor or a remote room sensor. The sen-  
sor for the application must be connected to terminals S1 and  
S2 of the thermostat. Set switch C to OFF for a outdoor air  
sensor. Set switch C to ON for a remote room sensor. The fac-  
tory setting is OFF.  
All thermostats allow up to 4 time/temperature settings to  
be programmed per 24-hr period. Each thermostat stores pro-  
grams for 7 independent days. Batteries are not required. Dur-  
ing power interruption the internal memory stores comfort  
schedules for an unlimited time while the clock continues to  
run for at least 72 hours.  
D. Averaging of Sensors (Switch D)  
Switch D is used if a remote room sensor is being used (switch C  
set to ON). The remote room sensor reading can be averaged  
with the sensor reading of the thermostat. Set switch D to  
OFF if averaging is not required. To average the readings of  
the thermostat and remote room sensors, set switch D to ON.  
The factory setting is OFF.  
The thermostat can be configured to accept several different  
equipment configurations, from single-stage heating and cool-  
ing to 3 stages of heating and 2 stages of cooling. The ther-  
mostat comes factory configured for 1 stage of cooling and  
1
stage of heating.  
INSTALLATION  
III. INSTALL THERMOSTAT  
I. THERMOSTAT LOCATION  
WARNING: Before installing thermostat, turn off all  
power to the unit. There may be more than one power  
disconnect. Electrical shock can cause injury or death.  
The thermostat should be mounted:  
approximately 5 ft from the floor  
close to or in a frequently used room, preferably on an in-  
side partitioning wall  
1
2
. Turn off all power to unit.  
on a section of wall without pipes or ductwork  
. If an existing thermostat is being replaced:  
a. Remove existing thermostat from the wall.  
The thermostat should not be mounted:  
close to a window, on an outside wall, or next to a door  
leading to the outside  
b. Disconnect wires from existing thermostat. Do not  
allow wires to fall back into the wall. As each wire  
is disconnected, record wire color and terminal  
connection.  
where exposed to direct light and heat from a lamp, the  
sun, a fireplace, or any other temperature-radiating object  
which may cause a false reading  
close to or in direct airflow from supply registers or return  
air grilles  
in areas with poor air circulation (such as behind a door or  
in an alcove)  
c. Discard or recycle old thermostat.  
NOTE: Mercury is a hazardous waste and must be disposed  
of properly.  
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3
4
. Open thermostat rear door (mounting base) to expose  
mounting holes.  
present), electric heat can be locked out if the outdoor ambi-  
ent temperature rises above the user-defined value. Tempera-  
tures of 15 to 55 F (in 5-degree increments) can be selected.  
The lockout can also be disabled. The default is OF (dis-  
abled). Emergency heat mode disables this function. Press the  
Copy Previous Day button in the configuration mode to ac-  
cess the parameter. Use the Up and Down buttons to in-  
crease or decrease the setting.  
. Route thermostat wires through large hole in mount-  
ing base. Remove outer sheath from wires for added  
flexibility.  
5
. Level mounting base against wall and mark wall through  
the 2 mounting holes in base.  
6
. Drill two 316-in. mounting holes in wall where marked.  
D. Clean Filter Timer Selection  
CAUTION: Be careful not to drill into wiring in wall.  
Electrical shock could result.  
The clean filter selection determines how many hours of blower  
operation will pass before the Clean Filter message is dis-  
played. A timer in the thermostat accumulates the total blower  
operation hours. The range of values is 400 to 3600 hours (in  
400-hour increments).  
7
8
. Secure mounting base to wall with 2 screws and an-  
chors provided. Ensure all wires exit through hole in  
mounting base.  
a ‘‘1’’ will be displayed for 400 hours of operation  
. Adjust wire length and routing to allow proper closure  
• a ‘‘2’’ will be displayed for 800 hours of operation  
• a ‘‘3’’ will be displayed for 1200 hours of operation  
• a ‘‘4’’ will be displayed for 1600 hours of operation  
• a ‘‘5’’ will be displayed for 2000 hours of operation  
• a ‘‘6’’ will be displayed for 2400 hours of operation  
of the thermostat. Strip each wire at the end no more  
1
than ⁄  
4
-in. to prevent adjacent wires from shorting to-  
gether. Match and connect wires to terminals on the  
thermostat. See Fig. 1-4.  
a ‘‘7’’ will be displayed for 2800 hours of operation  
CAUTION: Improper wiring or installation may cause  
damage to the thermostat. Check to ensure wiring is  
correct before proceeding with installation of unit.  
• a ‘‘8’’ will be displayed for 3200 hours of operation  
• a ‘‘9’’ will be displayed for 3600 hours of operation  
The selection can also be set to OF (disabled). Press the  
Reset Filter button in the configuration mode to access the  
parameter. Use the Up and Down buttons to change the set-  
ting. The default is 2 (800 hours).  
9
. Push excess wiring into wall. Seal hole in wall to pre-  
vent drafts.  
1
0. Close thermostat door.  
NOTE: During the selection procedure, the Clean Filter mes-  
sage will be displayed, even if OF (disabled) is chosen.  
11. Turn on power to unit. The thermostat will receive power  
from the unit.  
E. Anticipator Adjustment Selection  
On power up the thermostat display shows the selected setup  
mode (AC - single-stage air-conditioner, HP - single-stage heat  
pump, A2 - 2-stage air conditioner, H2 - 2-stage heat pump)  
for a few seconds, depending on DIP switch settings.  
The anticipator adjustment controls the sensitivity and cycle  
rate of the thermostat. Higher numbers decrease the sensi-  
tivity and slow the cycle rate. Lower numbers increase sen-  
sitivity and speed up the cycle rate. A limiting feature of the  
thermostat will not allow more than 4 equipment cycles per  
hour, regardless of the anticipator setting. Values can range  
from 1 to 9. The default is 3. The default selection will pro-  
vide optimum performance in nearly all installations. Do not  
change the setting unless there is a need to do so. Press the  
Mode button during configuration mode to change the set-  
ting. Use the Up and Down buttons to increase or decrease  
the value.  
IV. SET THERMOSTAT CONFIGURATION  
Configuration options, like DIP switch settings, are intended  
to be selected at installation and are not normally modified  
by the user. These options are not discussed in the owner ’s  
manual and must be done as part of the installation. A spe-  
cial procedure for the thermostat allows entry into the con-  
figuration mode. To enter configuration mode, press and hold  
the fan button for approximately 10 seconds. The room tem-  
perature display will disappear and dashes (--) will be dis-  
played on the thermostat screen. The thermostat will auto-  
matically exit configuration mode if no button is pressed for  
Unlike conventional thermostat anticipators, the setting is  
not determined by current draw. There is no need to mea-  
sure, know, or compensate for the current. There is no need  
to ‘‘droop’’ with this thermostat, regardless of the anticipator  
setting.  
1
0 seconds. Seven different configurations can be set in con-  
figuration mode.  
F. Keypad Lockout Selection  
A. Fahrenheit or Celsius Selection  
The thermostat has a lockout feature which will not acknowl-  
edge configuration buttons until the lockout code is entered.  
After the lockout code has been entered, the keypad will re-  
main unlocked until the user has stopped pressing keys for  
The thermostat can be set to use a Celsius or Fahrenheit tem-  
perature display. Press the Change Day button in configura-  
tion mode to access the parameter. Use the Up and Down  
buttons on the thermostat to change the setting between F  
2
minutes. The Lockout selection can be set to ON or OF (dis-  
(Fahrenheit) and C (Celsius). The default value is F.  
abled). Press the Set Time key in configuration mode to change  
the setting. Use the Up or Down buttons to toggle between  
off and on. The default is OF.  
B. Fan ON or OFF When Heat is Energized Selection  
The thermostat can be set to turn the fan (G output) on or off  
when the heat input (terminal W) is energized. Press the Hold  
button while in configuration mode to access the parameter.  
Use the Up and Down buttons to toggle between OF (fan off  
during heating) and ON (fan on during heating). The default  
value is OF.  
NOTE: If the lockout function is enabled, the user can only  
disable the lockout by pressing the correct buttons, in order,  
within a 10-second time period. The button sequence is: press  
the Mode button; press the Copy Previous Day button; press  
the Set Time button; and press the Hold button. The lockout  
will then be disabled until the user stops pressing buttons  
for 2 minutes.  
C. High Ambient Electric Heat Lockout Selection  
If DIP switch A is set to ON (heat pump application) and DIP  
switch C is set to OFF (an outdoor temperature sensor is  
2—  
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CONNECTION  
BOARD  
O/W2  
Y1  
R
R
Y1  
Y2  
G
W1  
W2  
Y/Y2  
W/W1  
G
C
C
B
X*  
5
5
5
5
5
5
48D036-120  
49B036-120  
51B036-150  
58D036-150  
80D036-150  
81B036-150  
L
DO NOT USE  
S1  
S2  
*
Does not apply to 558D and 580D036-150 units.  
NOTES:  
1
. 558D and 580D036-072 units only have one stage of cooling, but  
can have 2 stages of heat. In these applications set DIP switch B  
to ON for 2-stage operation.  
COMMERCIAL  
THERMOSTAT  
2. For 548D and 549B heat pump applications, set switch A to OFF  
(air conditioning). The 548D and 549B units do not have an ‘‘O’’  
terminal.  
Fig. 1 — Thermostat Wiring (548D036-120; 549B036-120; 551B036-150;  
558D036-150; 580D036-150; 581B036-150)  
TB2  
O/W2  
Y1  
W2  
W1  
R
R
G
C
Y/Y2  
Y1  
Y2  
W/W1  
G
X
C
B
L
551A155-240  
559E180-240  
559F180-300  
579E180-240  
579F180-300  
581A155-240  
DO NOT USE  
S1  
S2  
COMMERCIAL  
THERMOSTAT  
Fig. 2 — Thermostat Wiring (551A155-240; 559E180-240; 559F180-300;  
79E180-240; 579F180-300; 581A155-240)  
5
3—  
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TB2  
O/W2  
Y1  
RC  
RH  
2
4
R
G
FIELD RELAY  
W1  
W2  
Y1  
Y/Y2  
W/W1  
Y2  
G
C
C
C2  
FIELD  
RELAY  
C1  
B
L
X
11  
DO NOT USE  
S1  
S2  
542J150 and 180  
NOTES:  
1
. Field relay P/N HN61KK224.  
. Set switch A to OFF (air conditioning). The 542J units do not have an  
‘O’’ terminal.  
2
COMMERCIAL  
THERMOSTAT  
Fig. 3 — Thermostat Wiring (542J150 and 180)  
TB3  
O/W2  
Y1  
W2  
W1  
R
G
R
C
Y/Y2  
W/W1  
Y1  
Y2  
G
X
C
B
L
5
58G,H240-360  
80G,H240-360  
5
DO NOT USE  
S1  
S2  
COMMERCIAL  
THERMOSTAT  
Fig. 4 — Thermostat Wiring (558G,H240-360 and 580G,H240-360)  
4—  
G. Low Ambient Cooling Lockout Selection  
heating set point). If COOL is selected, the thermostat will  
only enter cooling mode (if the room temperature is above  
the cooling set point). If AUTO is selected, the thermostat will  
enter heating or cooling mode based on the room tempera-  
ture and the heating and cooling set points. Heat pumps also  
have an EHEAT selection. If EHEAT is selected, the heat pump  
will use the second stage of heating to provide heat when  
needed. The annuciator for each selection will be displayed  
on the thermostat when selected.  
The Low Ambient Cooling Lockout feature will lock out cool-  
ing mode if the outdoor-air temperature is below the lockout  
cooling temperature (user-configured).  
NOTE: This configuration is not available if DIP switch C (Re-  
mote Room Sensor) is set to ON or if the outdoor-air sensor is  
in error.  
The default is OF (disabled). The lockout temperature can be  
set to OF (disabled) or 20 to 60 F in 5-degree increments (en-  
abled). To configure the selection, press the Program button  
in the configuration mode. Use the Up and Down buttons to  
increase or decrease the setting.  
II. FIVE-MINUTE COMPRESSOR SHORT-CYCLE  
PROTECTION  
The timer prevents the compressor from starting until it has  
been off for at least 5 minutes. The short-cycle protection func-  
tion can be disabled (for one cycle only) by simultaneously  
pressing the Fan button and the Up button.  
V. CHECK THERMOSTAT OPERATION  
Perform the following procedure to check thermostat  
operation:  
III. FIFTEEN-MINUTE CYCLE TIMER  
1
. Press the Hold button. This will prevent the set point  
from changing until the desired time and temperature  
schedule is entered.  
The cycle timer prevents the start of a heating or cooling cycle  
until at least 15 minutes after the last start of the same cycle.  
This function keeps the equipment from being cycled more  
than 4 times in one hour. The cycle timer can be disabled (for  
one cycle only) by either changing the temperature set point  
or by simultaneously pressing the Fan button and the Up  
button.  
2
. Press the Fan button to switch the fan annunciator from  
AUTO to ON. The fan should run continuously. Check  
fan operation. Press the fan button again to switch back  
to AUTO.  
3
4
. Press the mode button repeatedly until HEAT is dis-  
played in the mode annunciator. Press the Up button  
until the set point reads 10 degrees above room tem-  
perature. The heating system should begin to operate  
within 5 minutes.  
IV. FIFTEEN-MINUTE STAGING TIMER  
When multi-stage heating or cooling is used, the staging timer  
prevents any higher stage from energizing until at least  
1
5 minutes has passed from the start of the previous stage.  
. Press the mode button repeatedly until COOL is dis-  
played in the mode annunciator. Press the Down button  
until the set point reads 10 degrees below room tem-  
perature. The cooling system should begin to operate  
within 5 minutes.  
The timer is disabled if the temperature demand is greater  
than 5 degrees.  
V. TWO-MINUTE MINIMUM ON TIME  
In normal operation, when a stage is energized, it must re-  
main on for at least 2 minutes.  
VI. SELECT THERMOSTAT OPERATION SETTINGS  
VI. HEATING/COOLING SET POINT MINIMUM  
DIFFERENCE  
Thermostat operation should be configured. Set the Fan and  
Mode configurations to their desired settings. Press the Up  
and Down buttons to select the desired comfort temperature.  
A minimum difference of 3 degrees is enforced between the  
heating and cooling set points. The thermostat will not allow  
the set points to be set within 3 degrees of each other.  
NOTE: Daily schedules can be programmed by the installer  
or the user. A detailed explanation of the schedule program-  
ming is in the Owner ’s Guide. If the daily schedules of the  
thermostat are being configured, refer to the thermostat own-  
er ’s guide literature.  
VII. AUTO-CHANGEOVER TIMER  
When the auto-changeover mode is selected, the thermostat  
will not change from heating to cooling or cooling to heating  
until an opposite demand has existed for a minimum of  
VII. FINAL CHECKLIST  
1
0 minutes. The timer is disabled if the heating or cooling  
1
. Put away tools and instruments. Clean up debris and  
packaging.  
set point is changed.  
2
3
. Review Owner ’s Guide with occupant or owner.  
. Leave Owner ’s Guide with occupant or owner.  
VIII. POWER-ON THERMOSTAT CHECK  
When power is applied to the thermostat, all possible display  
annunciators are turned on for a few seconds. The thermo-  
stat then indicates the current mode and configuration infor-  
mation with a 2-digit code. The following codes can be dis-  
played: AC — single-speed air conditioner, HP — single-  
speed heat pump, A2 — two-speed air conditioner, and H2 —  
two-speed heat pump.  
OPERATION  
I. HOLD, FAN, AND MODE BUTTON OPERATION  
Pressing the Hold button disables the time and temperature  
schedule and holds the current desired temperature set point.  
When a Hold is active, the HOLD annunciator is displayed  
on the thermostat screen. To release the Hold, press the Hold  
button a second time.  
IX. ERROR CODES  
The thermostat will display the following error codes if er-  
rors are detected:  
The Fan button selects fan operation. When the fan is set to  
ON, the fan will run continuously. When the fan is set to AUTO,  
the fan will run during heating and cooling operation only.  
E1 — If the thermostat cannot properly read room tempera-  
ture, the thermostat will display an E1 and all outputs (ex-  
cept the fan if on), will be deenergized.  
The Mode button selects the operating mode of the thermo-  
stat. If OFF is selected, the thermostat will not enter heating  
or cooling mode. If HEAT is selected, the thermostat will only  
enter heating mode (if the room temperature is below the  
E2 — If the AC line voltage drops below the minimum level,  
all outputs are deenergized and the thermostat will display  
an E2. The E2 error will remain until proper line voltage has  
5—  
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been restored (plus 15 seconds). If the line voltage is com-  
pletely interrupted, the thermostat display will immediately  
go blank.  
unoccupied). The Smart Recovery function begins 1.5 hours  
before the scheduled occupied mode and gradually adjusts room  
temperature so the temperature is at the occupied mode set  
point when the occupied time period begins.  
X. SMART RECOVERY (Heating Mode Only)  
The thermostat has 2 programmed schedule modes, normal  
occupied mode and setback mode (a time when the space is  
TROUBLESHOOTING  
PROBLEM  
SOLUTION  
LCD display on thermostat not illuminated  
Check for 24 vac between R and C at terminal connections. Both R and  
C must be connected for proper thermostat operation.  
‘‘E2’’ displayed on thermostat  
Brownout condition or voltage is too low to thermostat. Check wiring and  
check for 24 vac at R and C. The E2 error will clear 15 seconds after  
acceptable power levels are restored.  
‘‘E1’’ displayed on thermostat  
Temperature sensor reading is out of range. Check the sensor for dam-  
age. Check sensor wiring. Cycle power to thermostat. If display is not  
cleared, replace thermostat .  
‘‘Clean Filter’’ is displayed on thermostat  
After the configured number of blower operating hours, the Clean Filter  
message will be displayed. This reminds the owner to replace the filter.  
Press the Reset Filter button to reset the blower operation timer to  
0
hours.  
‘‘--’’ displayed on thermostat  
If the outdoor thermostat is in error, not connected, or shorted, ‘‘--’’ will be  
displayed. Check outdoor thermostat wiring and replace if necessary.  
Cooling will not energize  
Select COOL mode. Decrease cooling set point to 10 degrees below  
room temperature. Simultaneously press Fan and Up buttons to disable  
timers. Check for 24 vac at Y/Y2 terminal. If present, thermostat is oper-  
ating correctly and problem is with wiring or equipment. If 24 vac is not  
present, replace the thermostat.  
Heating will not energize  
Select HEAT mode. Increase heating set point to 10 degrees above room  
temperature. Simultaneously press Fan and Up buttons to disable timers.  
Check for 24 vac at Y/Y2 terminal (for heat pump) or W/W1 terminal (for  
gas/electric heat unit). If present, thermostat is operating correctly and  
problem is with wiring or equipment. If 24 vac is not present, replace the  
thermostat.  
6—  
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PACKAGED SERVICE TRAINING  
Our packaged service training programs provide an excellent way to increase your knowledge of the  
equipment discussed in this manual. Product programs cover:  
Maintenance  
Operating Sequence  
Unit Familiarization  
Installation Overview  
A large selection of product, theory, and skills programs is available. All programs include a video  
cassette and/or slides and a companion booklet. Use these for self teaching or to conduct full training  
sessions.  
For a free Service Training Material Catalog (STM), call 1-800-962-9212. Ordering instructions are  
included.  
Copyright 1996 Carrier Corporation  
CATALOG NO. BDP-809-641