505309-UIM-D-0511

MANIFOLD PRESSURE “U” TUBE CONNECTION

 

OUTLET

 

 

PRESSURE TAP

 

GAS VALVE

1/4” TUBING

 

 

 

 

FLAME

 

 

MAINIFOLD

 

 

PIPE

SENSOR

 

 

 

 

 

 

3.5 IN

 

 

 

WATER

 

 

 

COLUMN

GAS

 

 

GAS

 

U-TUBE

PRESSURE

BURNERS

 

 

MANOMETER

SHOWN

 

 

FIGURE 41: Reading Gas Pressure

ADJUSTMENT OF TEMPERATURE RISE

DANGER

The temperature rise, or temperature difference between the return air and the supply (heated) air from the furnace, must be within the range shown on the furnace rating plate and within the application limitations shown in Table 7.

The supply air temperature cannot exceed the “Maximum Supply Air Temperature” specified in these instructions and on the furnace rating plate. Under NO circumstances can the furnace be allowed to operate above the Maximum Supply Air Temperature. Operating the furnace above the Maximum Supply Air Temperature will cause pre- mature heat exchanger failure, high levels of Carbon Monoxide, a fire hazard, personal injury, property damage, and/or death.

After about 5 minutes of operation, determine the furnace temperature rise. Take readings of both the return air and the heated air in the ducts, about six feet (1.83 m) from the furnace where they will not be affected by radiant heat. Increase the blower speed to decrease the temperature rise; decrease the blower speed to increase the rise.

All direct-drive blowers have multi-speed motors. The blower motor speed taps are located on the furnace control board in the blower com- partment. Refer to Figure 41, and the unit-wiring label to change the blower speed. To use the same speed tap for heating and cooling, the heat terminal and cool terminal must be connected using a jumper wire and connected to the desired motor lead. Place all unused motor leads on Park terminals. Two park terminals are provided.

Do not energize more than one motor speed at a time or damage to the motor will result.

ADJUSTMENT OF FAN CONTROL SETTINGS

This furnace is equipped with a time-on/time-off heating fan control. The fan on delay is fixed at 30 seconds. The fan off delay has 4 settings (60, 90, 120 and 180 seconds). The fan off delay is factory set to 120 sec- onds. The fan-off setting must be long enough to adequately cool the furnace, but not so long that cold air is blown into the heated space. The fan-off timing may be adjusted by positioning the jumper on two of the four pins as shown in Figure 41.

CONTINUOUS FAN

BLOWER OFFSPEED JUMPER

DELAY JUMPER

DIAGNOSTIC ERROR CODE

RETRIEVAL BUTTON

HUMIDIFIER

TERMINAL

ELECTRONIC AIR

CLEANER TERMINAL

FIGURE 42: Furnace Control Board

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Johnson Controls Unitary Products

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Johnson Controls TM9T*MP installation manual Adjustment of Temperature Rise, Adjustment of FAN Control Settings
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TM9T*MP specifications

Johnson Controls TM9T*MP is a state-of-the-art HVAC unit designed for modern commercial and residential applications. With its innovative technology and robust features, the TM9T*MP offers exceptional performance, efficiency, and reliability. This unit is engineered to provide optimal climate control, ensuring that indoor environments remain comfortable regardless of external weather conditions.

One of the main features of the TM9T*MP is its variable-speed compressor, which allows for precise temperature regulation and energy-efficient operation. This technology enables the unit to adjust its output based on the current demand, significantly reducing energy consumption compared to traditional systems. By operating at lower speeds during mild weather, the TM9T*MP minimizes energy costs while maintaining user comfort.

Another significant aspect of the TM9T*MP is its advanced multi-stage filtration system. This system includes a high-efficiency air filter capable of capturing a wide range of airborne particles, including dust, pollen, and allergens. This feature not only improves indoor air quality but also helps to promote a healthier living environment for occupants. Furthermore, the TM9T*MP is compatible with smart home technology, allowing users to monitor and control their HVAC system remotely through mobile devices or voice-controlled assistants.

The TM9T*MP also boasts a compact design, making it versatile for various installation environments. Its sleek profile allows for easy integration into existing spaces without requiring extensive modifications. Durability is another hallmark of this unit, as it is built with high-quality materials designed to withstand the rigors of daily use while providing long-lasting performance.

Additionally, the TM9T*MP incorporates advanced diagnostics and troubleshooting capabilities. This feature simplifies maintenance by alerting technicians to potential issues before they escalate, ensuring smooth operation and reducing downtime. Moreover, with a user-friendly interface, occupants can easily adjust settings, access energy usage data, and schedule maintenance reminders for peak performance.

In summary, Johnson Controls TM9T*MP sets a new standard in HVAC technology with its variable-speed compressor, multi-stage filtration, compact design, and smart capabilities. Committed to energy efficiency and indoor air quality, it promises to deliver comfort and sustainability in every setting.
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