340968-XIM-A-0108

38" min.

Spark Ignitor

Pilot

Flame Sensor

FIGURE 12 - PROPER FLAME ADJUSTMENT

To adjust the pilot flame:

1.Remove the pilot adjustment cover screw.

2.Adjust the pilot adjustment screw to achieve the proper pilot flame.

3.Replace the pilot adjustment cover screw after the pilot flame is set.

To remove the pilot assembly:

1.Disconnect the wiring from the control board to the pilot assembly.

2.Remove the two (2) #8 screws holding the pilot assem- bly in place.

3.Remove the pilot assembly.

ADJUSTMENT OF TEMPERATURE RISE

Degrees F Temp Rise = BTUH-------------------Output----------------

 

1.08 ⋅ CFM

 

OR

CFM =

BTUH Output

1.08------------⋅-----Degrees------------------------F------Temp----------------Rise----------

The temperature rise (or temperature difference between the return air and the heated air from the furnace) must lie within the range shown on the rating plate and the data in Tables 3 and 4.

After the temperature rise has been determined, the CFM can be calculated as follows:

After about 20 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 from the furnace where they will not be affected by radiant heat. Increase the blower CFM to decrease the temperature rise; decrease the blower CFM to increase the rise.

DIRECT DRIVE BLOWER

All units have direct drive multi-speed blower motors. Refer to the unit wiring diagram and connect the blower motor for the desired motor speed.

CHECKING GAS INPUT

NATURAL GAS

1.Turn off all other gas appliances connected to the gas meter.

2.With the furnace turned on, measure the time needed for one revolution of the hand on the smallest dial on the meter. A typical gas meter usually has a 1/2 or a 1 cubic foot test dial.

3.Using the number of seconds for each revolution and the size of the test dial increment, find the cubic feet of gas consumed per hour from Table 12.

If the actual input is not within 5% of the furnace rating with allowance being made for the permissible range of the regu- lator setting, replace the orifice spuds with spuds of the proper size.

NOTE: To find the BTU input, multiply the number of cubic feet of gas consumed per hour by the BTU content of the gas in your particular locality. (Contact your gas company for this information since it varies widely from city to city.)

Johnson Controls Unitary Products

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Johnson Controls 340968-XIM-A-0108 installation manual Adjustment of Temperature Rise, Checking GAS Input
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340968-XIM-A-0108 specifications

Johnson Controls 340968-XIM-A-0108 is a sophisticated component designed for advanced building management and automation systems. This device is engineered to enhance the performance and efficiency of HVAC (Heating, Ventilation, and Air Conditioning) systems, contributing significantly to energy conservation and optimal climate control in commercial and industrial environments.

One of the main features of the Johnson Controls 340968-XIM-A-0108 is its robust compatibility with various building management systems. This component integrates seamlessly with existing systems, allowing for quick deployment and ease of use. The flexibility of this device supports multiple communication protocols, making it a versatile choice for systems upgrades or replacements.

Another standout characteristic of the 340968-XIM-A-0108 is its advanced sensing technologies. This device is equipped with high-precision sensors that monitor temperature, humidity, and air quality, providing real-time data to the building management system. The ability to collect accurate environmental data enables facility managers to make informed decisions that enhance comfort and efficiency.

Energy efficiency is a key focus of the Johnson Controls 340968-XIM-A-0108. The device incorporates intelligent algorithms that optimize HVAC operations, significantly reducing energy consumption. By analyzing usage patterns and adjusting settings accordingly, it helps facilities decrease operational costs while maintaining ideal indoor conditions.

In addition to its operational efficiency, the Johnson Controls 340968-XIM-A-0108 features a user-friendly interface that simplifies monitoring and management. The intuitive design allows operators to easily access system data and make adjustments as necessary without requiring extensive technical knowledge. This feature enhances the overall user experience and promotes efficient building management.

Safety and reliability are also prioritized in the design of the 340968-XIM-A-0108. Built with durable materials and rigorous testing standards, it ensures long-term operation under various conditions. Furthermore, the device supports multiple fail-safes and alarms, providing peace of mind to facility managers regarding system performance and safety.

In conclusion, the Johnson Controls 340968-XIM-A-0108 stands out in the building automation market due to its compatibility, sensing technologies, energy efficiency, user-friendly interface, and reliable performance. These features make it an essential component for optimizing HVAC operations and ensuring sustainable building management practices.
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