installation, start-up and
operating instructions
COMMERCIAL THERMOSTAT
(P/N TSTATBBPCM01-A)
Cancels: New II TSTAT-1
6/15/96
IMPORTANT: Read entire instructions before starting the
installation.
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 wiring 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 personal injury.
Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety alert symbol.
DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies
a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result
in minor personal injury or property damage.
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 (heating, cooling and ventilation) system. Separate heating and
cooling set points and auto-changeover capability allow occupied and unoccupied programming for energy savings.
All thermostats allow up to 4 time/temperature settings to
be programmed per 24-hr period. Each thermostat stores programs for 7 independent days. Batteries are not required. During power interruption the internal memory stores comfort
schedules for an unlimited time while the clock continues to
run for at least 72 hours.
The thermostat can be configured to accept several different
equipment configurations, from single-stage heating and cooling to 3 stages of heating and 2 stages of cooling. The thermostat comes factory configured for 1 stage of cooling and
1 stage of heating.
INSTALLATION
I. THERMOSTAT LOCATION
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
• on a section of wall without pipes or ductwork
The thermostat should not be mounted:
• close to a window, on an outside wall, or next to a door
leading to the outside
• 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)
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 numbers (1-4) on theswitch.Theswitchdesignation(A-D)isprinted
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.
A. Air Conditioner or Heat Pump Selection (Switch A)
Use switchAto 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 reversing valve). Set switch A to ON for heat pump applications (O is used to energize the reversing valve). The factory
setting is OFF.
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 compressor.Set switch B to ON for a 2-stage compressor. The factory
setting is OFF.
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 sensor 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 factory setting is OFF.
D. Averaging of Sensors (Switch D)
Switch D isusedif 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.
III. INSTALL THERMOSTAT
WARNING:
power to the unit. There may be more than one power
disconnect. Electrical shock can cause injury or death.
1. Turn off all power to unit.
2. If an existing thermostat is being replaced:
a. Remove existing thermostat from the wall.
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.
c. Discard or recycle old thermostat.
NOTE: Mercury is a hazardous waste and must be disposed
of properly.
Before installing thermostat, turn off all
3. Open thermostat rear door (mounting base) to expose
mounting holes.
4. Route thermostat wires through large hole in mounting base. Remove outer sheath from wires for added
flexibility.
5. Level mounting baseagainstwall and mark wall through
the 2 mounting holes in base.
3
6. Drill two
CAUTION:
⁄16-in. mounting holes in wall where marked.
Be careful not to drill into wiring in wall.
Electrical shock could result.
7. Secure mounting base to wall with 2 screws and anchors provided. Ensure all wires exit through hole in
mounting base.
8. Adjust wire length and routing to allow proper closure
of the thermostat. Strip each wire at the end no more
1
⁄4-in. to prevent adjacent wires from shorting to-
than
gether. Match and connect wires to terminals on the
thermostat. See Fig. 1-4.
CAUTION:
Improper wiring or installation maycause
damage to the thermostat. Check to ensure wiring is
correct before proceeding with installation of unit.
9. Push excess wiring into wall. Seal hole in wall to prevent drafts.
10. Close thermostat door.
11. Turn on power to unit. The thermostat will receive power
from the unit.
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.
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 special procedure for the thermostat allows entry into the configuration mode. To enter configuration mode, press and hold
the fan button for approximately 10 seconds. The room temperature display will disappear and dashes (--) will be displayed on the thermostat screen. The thermostat will automatically exit configuration mode if no button is pressed for
10 seconds. Seven different configurations can be set in configuration mode.
A. Fahrenheit or Celsius Selection
The thermostat can be set to use a Celsius or Fahrenheit temperature display. Press the Change Day button in configuration mode to access the parameter. Use the Up and Down
buttons on the thermostat to change the setting between F
(Fahrenheit) and C (Celsius). The default value is F.
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.
C. High Ambient Electric Heat Lockout Selection
If DIP switch Ais set to ON (heat pump application) and DIP
switch C is set to OFF (an outdoor temperature sensor is
present), electric heat can be locked out if the outdoor ambient temperature rises above the user-defined value. Temperatures of 15 to 55 F (in 5-degree increments) can be selected.
The lockout can also be disabled. The default is OF (disabled). Emergency heat mode disables this function. Press the
Copy Previous Day button in the configuration mode to access the parameter. Use the Up and Down buttons to increase or decrease the setting.
D. Clean Filter Timer Selection
The clean filter selection determines how many hours of blower
operation will pass before the Clean Filter message is displayed.A timer in the thermostat accumulates the total blower
operation hours. The range of values is 400 to 3600 hours (in
400-hour increments).
• a ‘‘1’’ will be displayed for 400 hours of operation
• 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
• a ‘‘7’’ will be displayed for 2800 hours of operation
• 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 setting. The default is 2 (800 hours).
NOTE: During the selection procedure, the Clean Filter message will be displayed, even if OF (disabled) is chosen.
E. Anticipator Adjustment Selection
The anticipator adjustment controls the sensitivity and cycle
rate of the thermostat. Higher numbers decrease the sensitivity and slow the cycle rate. Lower numbers increase sensitivity 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 provide 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 setting. Use the Up and Down buttons to increase or decrease
the value.
Unlike conventional thermostat anticipators, the setting is
not determined by current draw. There is no need to measure, know, or compensate for the current. There is no need
to ‘‘droop’’ with this thermostat, regardless of the anticipator
setting.
F. Keypad Lockout Selection
The thermostat has a lockout feature which will not acknowledge configuration buttons until the lockout code is entered.
After the lockout code has been entered, the keypad will remain unlocked until the user has stopped pressing keys for
2 minutes. The Lockout selection can be set to ON or OF (disabled). Press the Set Timekeyinconfigurationmodetochange
the setting. Use the Up or Down buttons to toggle between
off and on. The default 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.
—2—
CONNECTION
BOARD
O/W2
Y1
R
G
Y/Y2
W/W1
C
B
548D036-120
549B036-120
551B036-150
558D036-150
580D036-150
581B036-150
DO NOT USE
S1
S2
COMMERCIAL
THERMOSTAT
L
*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.
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)
R
Y1
Y2
W1
W2
G
C
X
*
O/W2
Y1
Y/Y2
W/W1
DO NOT USE
S1
S2
COMMERCIAL
THERMOSTAT
TB2
W2
W1
R
G
C
B
L
R
C
Y1
Y2
G
X
551A155-240
559E180-240
559F180-300
579E180-240
579F180-300
581A155-240
Fig. 2 — Thermostat Wiring (551A155-240; 559E180-240; 559F180-300;
579E180-240; 579F180-300; 581A155-240)
—3—