TB---PAC
TB---PHP
Base Series Programmable Thermostats
Installation Instructions
Designed and Assembled
in the USA.
US patents: US20060165149 A1, USD578026 SI, US6205041 B1
A07107
Base Series Programmable Thermostat
NOTE: Read the entire instruction manual before starting the installation
TABLE OF CONTENTS
PAGE SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1 INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 INSTALLATION CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 1 — Thermostat Location . . . . . . . . . . . . . . . . . . . . . . . . |
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Step 2 — Install Thermostat . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 3 — Set Thermostat Configuration . . . . . . . . . . . . . . . . . |
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Step 4 — Understand Thermostat Operation . . . . . . . . . . . . . . 3 Step 5 — Check Thermostat Operation . . . . . . . . . . . . . . . . . . 4 WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
SAFETY CONSIDERATIONS
Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may cause death, personal injury, or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency muse use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.
Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Have a fire extinguisher available. Read these instructions thoroughly and follow all warnings or cautions
included in literature and attached to the unit. Consult local building codes and the current editions of the National Electrical Code (NEC) NFPA 70.
In Canada, refer to the current editions of the Canadian Electrical Code CSA C22.1.
Recognize safety information. This is the safety-alert symbol 
. When you see this symbol on the unit and in the instructions or manuals, 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 may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.
INTRODUCTION
There are two Base Series programmable thermostat models, one for AC applications and one for HP applications. Both are dual powered, operating from either 24VAC or two alkaline AA batteries. Configuration and program schedules are stored in non-volatile memory, preserving this information during power loss and battery removal. Features include simplified 5/2 day programming, large backlit display, and modern styling.
The AC model provides one stage of heating and one stage of cooling.
The HP model provides two stages of heating and one stage of cooling.
INSTALLATION CONSIDERATIONS
AC Operation
For 24VAC operation, both the R and C wires must be connected to the 24VAC power source. Batteries are not needed.
Battery Operation
When batteries are used, the common (C) connection is not needed, saving a wire, and eliminating 24VAC operation. The thermostat continues to operate in the event of a power failure. Battery life is expected to be one year. A “low battery” reminder tells the homeowner when it is time to replace the batteries. When connected without the common wire, the thermostat will not operate without batteries. Continuous back-lighting is not available.
Both Battery and AC Operation
If both batteries and 24VAC operation are used (batteries installed and the common wire connected), and indefinite clock operation are provided, the battery will be used only during AC power loss, extending battery life to nearly its shelf life.
A jumper has to be properly set for backlight operation. J2 should be set in the “AC” position when the thermostat is operated from 24VAC. J2 should be set in the “BAT” position when the
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thermostat is operated from batteries. The thermostat will continue to operate if J2 is not in the correct position or not connected. However, the backlight will not operate.
INSTALLATION
IMPORTANT: Install batteries last to ensure proper thermostat mounting and latch engagement.
Step 1 — Thermostat Location
Thermostat should be mounted:
S Approximately 5 ft (1.5m) from floor.
S Close to or in a frequently used room, preferably on an inside partitioning wall.
S On a section of wall without pipes or duct work.
Thermostat should NOT be mounted:
S Close to a window, on an outside wall, or next to a door leading to the outside.
S Exposed to direct light and heat from the sun, a lamp, fireplace, or other heat-radiating object which may cause a false reading.
S Close to or in direct airflow from supply registers and return-air grilles.
SIn areas with poor air circulation, such as behind a door or in an alcove.
Step 2 — Install Thermostat
IMPORTANT: Install batteries last to ensure proper thermostat mounting and latch engagement.
!WARNING
ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury or death.
Before installing thermostat, turn off all power to unit. There may be more than 1 disconnect. Lock out and tag switch with a suitable warning label.
1.Turn OFF all power to HVAC unit.
2.If an existing thermostat is being replaced:
a.Remove existing thermostat from wall.
b.Disconnect wires from existing thermostat, one at a time. Be careful not to allow wires to fall back into wall.
c.As each wire is disconnected, record wire color and terminal marking.
d.Discard or recycle old thermostat.
!CAUTION
ENVIRONMENTAL HAZARD
Failure to follow this caution may result in environmental damage.
Mercury is a hazardous waste and may be found in the old thermostat. Federal regulations require that Mercury be disposed of properly.
3.Separate front and back plastic assembly of thermostat.
4.Route thermostat wires through hole in mounting base. Level mounting base against wall (for aesthetic value only, thermostat need not be level for proper operation) and mark wall through 2 mounting holes.
5.Drill two 3/16-in. (5mm) mounting holes in wall where marked.
6.Secure back plate to wall with 2 anchors and screws provided making sure all wires extend through hole in plastic.
NOTE: Anchoring the back plate will maximize proper mounting plate flatness and allow latch to fully engage.
7.Connect wires to proper terminal location on backplate.
8.Push any excess wire back into wall. Seal hole in wall to prevent air leaks. Leaks can affect thermostat operation. Any excess wire left inside thermostat casing may also affect thermostat operation by interfering with airflow across the temperature sensor.
9.Set the thermostat front housing into the (2) latches (notches) on the bottom of the back plate.
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10.Rotate the front housing forward and press on the faceplate with thumbs near the Up/Down arrows on the right and the “H/C” and fan symbols on the left side of the display. Do this with a moderate amount of pressure.
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11.If necessary, continue to rotate the front housing forward and press to engage the top corner latches.
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12.Snap thermostat together making sure assembly is secure.
13.Install the batteries.
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14. Turn ON power to unit.
On power up, depending on the thermostat model being used, the LCD readout will display either AC for air conditioner model (1-stage heat/1-stage cool) or HP for heat pump model (2-stage heat/1-stage cool).
Step 3 — Set Thermostat Configuration
Configuration options enable the installer to configure the thermostat for a particular installation.
These are not presented to the homeowner and therefore must be properly set by the installer. Following is a list of the options available, an explanation of their function, and their factory default settings. Not all numbers are used in the Base Series because not all options are available in this series.
Configuration Options - Summary:
Option 01 - Equipment type Option 03 - Fahrenheit/Centigrade
Option 04 - Fan (G) on with W output Option 10 - Reversing valve
Option 13 - Room air temperature offset Option 21 - Keypad Lockout
Option 26 - Minimum Cooling Setpoint
Option 27 - Maximum Heating Setpoint
To Enter The Configuration Mode:
Press and hold the FAN key for about 10 seconds until the display changes so that only two pairs of digits are showing. The configuration number, now 01, will appear in the setpoint/temperature location and the configuration setting will appear in the clock location. The configuration number (left pair) will be flashing which means it can be adjusted using the UP and DOWN keys. To cause the opposite pair to flash (to be adjustable), press the H/C key. Successive presses of the H/C key alternate between the configuration number (left) and the configuration setting (right). To exit the configuration mode, press the HOLD/END key. If no key is pressed for 3 minutes, the configuration mode will automatically exit, returning the thermostat to normal operation.
Configuration Options - Selection:
Option 01 - Equipment type
Selections: with HP thermostat: HP, AC, PH, or PC with AC thermostat: AC or PC
Meanings:
PH or PC selects PTAC units (Packaged Terminal Air Conditioners) which are used in motel rooms and other rented spaces. When this option is selected, the display shows only the setpoint, not the room temperature. Also, the compressor timeguard is disabled, allowing the compressor to turn on immediately when a demand is established.
HP or PH controls 1 speed heat pump with 1 stage of aux heat. AC or PC controls 1 speed air conditioner with one stage of heat.
Note that this option allows a HP thermostat to be converted to control an AC system.
Option 03 - Fahrenheit/Centigrade
Selections: F = Fahrenheit — This is default. C = Centigrade.
Selects temperature display units.
Option 04 - Fan (G) ON with W output
Selections: OF = G not energized with W — This is default. ON = G energized with W.
This selection determines whether the fan (G) is to be ON or OFF when the W (furnace or strip heat) is ON. Furnaces and fan coils which manage their own blowers do not require a separate G
signal. Some auxiliary heaters require a separate G signal to operate the blower when W is applied.
This option allows a HP thermostat to control an AC system.
Option 10 - Reversing valve
Selections: C = reversing valve energized in cooling —This is default.
H = reversing valve energized in heating — Only appears in HP systems.
Option 13 - Room Air Temperature Offset
Selections: ±5_F /3_C. Default is 0.
The number of degrees to be added to the displayed temperature to calibrate or deliberately miscalibrate the measured room temperature. This option is in _F even if Option 3 is set for _C.
Option 21 - Keypad Lockout
Selections: ON, OF — Default is OF.
With OF selected, the keypad cannot be locked. With ON selected the keypad will be locked and can be unlocked by simultaneously pressing the UP and DOWN keys for 5 seconds. Once unlocked, it will relock 2 minutes after the last keypad press. If any key is pressed and the thermostat is locked, “loc” will be displayed in the clock digits.
Option 26 - Minimum Cooling Setpoint
Selections: 50_ to 90_F/10_ to 32_C — Default is 52_F/11_C. Sets the lowest cooling setpoint available to the user.
Option 27 - Maximum Heating Setpoint
Selections: 50_ to 90_F/10_ to 32_C — Default is 88_F/31_C. Sets the highest heating setpoint available to the user.
Step 4 — Understand Thermostat Operation
Temperature Display
Thermostat will display room temperature until UP or DOWN button is pressed. The words SET TEMP appear when these buttons are pressed and the current setpoint is displayed. If no buttons are pressed for 5 sec, the display will change back to show room temperature.
Back lighting
Continuous back-lighting is not available. The backlight will come on for 10 seconds after any button press. Without AC power and when the battery is low, the backlight will remain off with button presses.
Battery Indicator
A battery indication icon on the display shows nothing, half, or low/no battery condition. If the battery is full or operation is from AC power, no icon appears. Under battery operation, if the battery is half full, a half full battery icon appears. As the battery depletes below half, the icon remains at half, but the 10 second backlight disappears. When the battery is absent or depleted, the display goes blank except for an empty battery icon and all outputs are turned off.
Timeguard Timer
A 5-minute timeguard is built into the thermostat immediately upon power up, and any time the compressor turns off. The compressor will not turn on until the timeguard has expired. The timeguard affects only compressor operation. Pressing UP and FAN buttons simultaneously will override the timeguard for 1 cycle. If PTAC operation (PH or PC) is selected under Option 1, the timeguard timer is eliminated.
Cycle Timer
In normal heating and cooling operation the thermostat will not allow more than 4 equipment cycles per hour (or 1 cycle every 15 minutes). Both the Y and W outputs have a 15-minute timer that starts counting down when the output is turned on, (e.g., if Y output is turned on for 9 minutes and then satisfies, it cannot turn back on for another 6 minutes regardless of demand). However,
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