Bryant T1--PHP, T1--PAC Understand Thermostat Operation, Check Thermostat Operation

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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.

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.

Backlighting

Continuous backlighting 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

A5-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, pressing UP and FAN buttons simultaneously or changing the setpoint will override the timer for 1 cycle.

Minimum on Timer

Once the equipment has turned on, it will remain on for a minimum of 3 minutes regardless of demand. However, the equipment can turn off in less than 3 minutes if a change in setpoint, or a change in mode occurs.

Staging Timer

If the thermostat is a heat pump model, it has 2-stage heat capability. In normal operation there is a 15-minute delay between the first and second stages of heat. The Y output will energize first, then 15 minutes later, W is allowed to come on if the thermostat determines it is not satisfying the demand.

However, if the heating demand is greater than 5_F/2.8_C, there will be only a 30 second delay before bringing on W.

Auxiliary Heat Indicator

When operating a heat pump and either auxiliary heat or emergency heat is active, a front mounted LCD indicates this condition.

A07821

Error Messages

If the room temperature sensor fails, two dashes (--) will appear in the temperature display and all heating and cooling outputs will be turned off. The thermostat must be replaced.

If the internal non-volatile memory fails, E4 will alternately flash with the temperature on the display and all heating and cooling outputs will be turned off. The thermostat must be replaced.

Step 5 — Check Thermostat Operation

Fan Operation

1.Press FAN button. This will start continuous fan operation. FAN ON icon will turn on.

2.Press FAN button again. This will stop continuous fan operation. FAN ON icon will turn off.

Heating Operation

1.Press H/C button until HEAT is displayed.

2.Press UP button until LCD readout reads 3_F/1.7_C above room temperature. Press UP and FAN buttons simultaneously to defeat timers. Heating system should begin to operate immediately.

3.For HP thermostats only, press H/C button until EMHT (emergency heat) appears. Press UP and FAN buttons simultaneously to defeat timers. Emergency heating (W is ON, Y is OFF) should begin immediately.

Cooling Operation

1.Press H/C button until COOL is displayed.

2.Press DOWN button until LCD readout reads 3_/1.7_C below room temperature. Press UP and FAN buttons simultaneously to defeat timers. Cooling system should begin to operate immediately.

Table 1 shows the thermostat outputs for each available stage of heating or cooling. It may be useful in checkout or troubleshooting.

T1-- PAC / T1-- PHP

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Contents Installation Installation InstructionsSafety Considerations Installation ConsiderationsConfiguration Options Selection Install ThermostatSet Thermostat Configuration Configuration Options SummaryCheck Thermostat Operation Understand Thermostat OperationOutputs Wiring DiagramsProgrammed Operation Setting Time and DAYHomeowner’s Guide Manual OperationOverriding Your Comfort Schedule TroubleshootingChanging Batteries Modifying Your Weekly Comfort ScheduleThermostat Limited Warranty For Service or REPAIR, Follow These Steps in OrderWarranty Conditions Catalog No. IIT1---PAC

T1--PHP, T1--PAC specifications

Bryant T1--PAC and T1--PHP are two innovative solutions developed by Bryant, designed to cater to the evolving needs of the heating, ventilation, and air conditioning (HVAC) market. These units serve as a testament to Bryant's commitment to quality, efficiency, and cutting-edge technology, ensuring optimal comfort levels while minimizing energy consumption.

The Bryant T1--PAC, or Packaged Air Conditioner, is engineered to deliver powerful cooling performance for both residential and commercial applications. It features a sleek and compact design that allows for easy installation and maintenance. One of its key characteristics is its multi-stage compressor, which effectively adjusts cooling capacity based on real-time demand, ensuring energy efficiency without compromising comfort. Additionally, this model incorporates a high-efficiency fan and advanced thermodynamic technology that helps to reduce noise levels, making it a quiet operation choice for noise-sensitive environments.

The T1--PAC is also equipped with a user-friendly digital thermostat, providing precise temperature control and programmability. This feature allows users to customize their cooling schedules according to their lifestyle, resulting in increased energy savings. Furthermore, the unit utilizes environmentally friendly refrigerants, aligning with modern sustainability practices and regulatory standards.

On the other hand, the Bryant T1--PHP, or Packaged Heat Pump, offers versatile heating and cooling capabilities. It is designed to efficiently provide both temperature control and humidity management throughout the year. The T1--PHP integrates heat pump technology that extracts ambient heat from the air, even in cooler temperatures, and transfers it indoors, thus maximizing energy efficiency.

Among its notable features is the variable-speed compressor, which not only enhances comfort by maintaining consistent indoor temperatures but also optimizes electrical consumption. Another advantage of the T1--PHP is its built-in defrost cycle, which ensures reliable operation in colder climates by preventing ice buildup on the outdoor coil.

Both systems are constructed with durable materials, ensuring longevity and resilience against the elements. Additionally, the units come with a comprehensive warranty, reflecting the manufacturer's confidence in the product's reliability and performance.

In summary, the Bryant T1--PAC and T1--PHP stand out in the HVAC industry for their advanced technology, energy efficiency, and user-friendly features. They cater to a wide range of climate control needs, making them ideal choices for homeowners and businesses seeking dependable and efficient heating and cooling solutions.
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