356485-UIM-G-1211

An accessible manual shutoff valve must be installed upstream of the furnace gas controls and within 6 feet (1.8 m) of the furnace.

The furnace must be isolated from the gas supply piping system by closing its individual external manual shutoff valve during any pressure testing of the gas supply piping system at pressures equal to or less than 1/2 psig (3.5 kPa).

The gas valve body is a very thin casting that cannot take any external pressure. Never apply a pipe wrench to the body of the gas valve when installing piping. A wrench must be placed on the octa- gon hub located on the gas inlet side of the valve. Placing a wrench to the body of the gas valve will damage the valve causing improper operation and/or the valve to leak.

Gas piping may be connected from either side of the furnace using any of the gas pipe entry on both sides of the furnace. Refer to Figure 12.

Table 5: Nominal Manifold Pressure

Manifold Pressures (in wc)

 

 

 

Altitude (feet)

 

 

 

0-7999

8000-8999

9000-9999

 

 

 

 

 

 

800

3.5

3.5

3.5

 

 

 

 

 

ValueHeatingGas ft.)(BTU/cu

850

3.5

3.5

3.5

1100

3.2

2.7

2.4

 

900

3.5

3.5

3.5

 

 

 

 

 

 

950

3.5

3.5

3.3

 

 

 

 

 

 

1000

3.5

3.2

2.9

 

1050

3.5

2.9

2.7

 

 

 

 

 

 

 

 

 

 

 

2500 (LP)

9.8

8.2

7.5

GAS ORIFICE CONVERSION FOR PROPANE (LP)

This furnace is constructed at the factory for natural gas-fired operation, but may be converted to operate on propane (LP) gas by using a fac- tory-supplied LP conversion kit. Follow the instructions supplied with the LP kit.

LoNOx furnaces requiring propane (LP) gas must have the LoNOx screens removed prior to installation and operation. See propane instructions.

HIGH ALTITUDE GAS ORIFICE CONVERSION

This furnace is constructed at the factory for natural gas-fired operation at 0 –5,000 feet (0-m – 1,524 m) above sea level.

The manifold pressure must be changed in order to maintain proper and safe operation when the furnace is installed in a location where the altitude is greater than 5,000 feet (1,524 m) above sea level. Refer to Table 5 for proper manifold pressure settings.

HIGH ALTITUDE PRESSURE SWITCH CONVERSION

For installation where the altitude is less than 5,000 feet (1,524m), it is not required that the pressure switch be changed unless you are in an area subject to low pressure inversions.

Manifold Pressures (kpa)

 

 

 

 

Altitude (m)

 

 

 

 

0-2437

2438-2742

2743-3048

 

 

 

 

 

 

 

 

29.8

0.87

0.87

0.87

 

 

 

 

 

 

HeatingValue

 

31.7

0.87

0.87

0.87

(MJ/cum)

33.5

0.87

0.87

0.87

 

 

 

 

35.4

0.87

0.87

0.81

 

 

 

 

 

 

37.3

0.87

0.80

0.73

Gas

 

39.1

0.87

0.73

0.67

 

 

 

 

 

 

41.0

0.80

0.66

0.61

 

 

 

 

 

 

 

 

93.2 (LP)

2.44

2.03

1.86

DANGER

PROPANE AND HIGH ALTITUDE CONVERSION KITS

It is very important to choose the correct kit and/or gas orifices for the altitude and the type of gas for which the furnace is being installed.

Only use natural gas in furnaces designed for natural gas. Only use propane (LP) gas for furnaces that have been properly converted to use pro- pane (LP) gas. Do not use this furnace with butane gas.

Incorrect gas orifices or a furnace that has been improperly converted will create an extremely dangerous condition resulting in premature heat exchanger failure, excessive sooting, high levels of carbon monoxide, personal injury, property damage, a fire hazard and/or death.

High altitude and propane (LP) conversions are required in order for the appliance to satisfactory meet the application. An authorized distributor or dealer must make all gas conversions.

In Canada, a certified conversion station or other qualified agency, using factory specified and/or approved parts, must perform the conversion. The installer must take every precaution to insure that the furnace has been converted to the proper gas orifice size when the furnace is installed. Do not attempt to drill out any orifices to obtain the proper orifice size. Drilling out a gas orifice will cause misalignment of the burner flames, causing premature heat exchanger burnout, high levels of carbon monoxide, excessive sooting, a fire hazard, personal injury, property damage and/or death.

Johnson Controls Unitary Products

11

Page 10 Page 12
Page 11
Image 11
Johnson Controls GG8S*MP, TGLS*MP, TG8S*MP GAS Orifice Conversion for Propane LP, High Altitude GAS Orifice Conversion
Page 10 Page 12

TG8S*MP, GG8S*MP, TGLS*MP, GGLS*MP specifications

Johnson Controls is a leader in the development of innovative building management solutions, and its product line encompassing the GGLS*MP, TGLS*MP, TG8S*MP, and GG8S*MP series exemplifies this commitment to excellence. These devices are designed to optimize energy efficiency, enhance occupant comfort, and ensure seamless integration into commercial building infrastructures.

The GGLS*MP series focuses on the integration of advanced sensors and controllers that facilitate effective lighting and HVAC management. With built-in capabilities for occupancy sensing and daylight harvesting, these devices can automatically adjust settings based on real-time conditions. Their energy-efficient operation not only contributes to lower utility costs but also supports sustainability goals, making them ideal for modern green buildings.

In contrast, the TGLS*MP series emphasizes the importance of temperature regulation and comfort in residential or smaller commercial settings. These controllers utilize advanced algorithms to maintain optimal indoor climates, adjusting heating and cooling outputs in response to ambient conditions. The intuitive user interface makes it easy for users to customize their settings, providing enhanced comfort without sacrificing energy efficiency.

The TG8S*MP series is particularly renowned for its robust communication features. These devices support multiple communication protocols, allowing them to integrate smoothly with existing building management systems. This versatility ensures that customers can leverage their current infrastructure while benefiting from new technology. Additionally, the TG8S*MP includes remote monitoring capabilities, enabling facility managers to track performance metrics and troubleshoot issues from anywhere.

Lastly, the GG8S*MP series brings together security and control features, ensuring that buildings are not only energy-efficient but also secure. With capabilities for access control and monitoring, these devices provide a comprehensive solution for managing facility safety. Their integration with lighting and HVAC systems further enhances overall efficiency, creating a comfortable and secure environment for all occupants.

In summary, Johnson Controls’ GGLS*MP, TGLS*MP, TG8S*MP, and GG8S*MP series presents cutting-edge technologies designed for energy efficiency, ease of use, and versatility. By focusing on comprehensive building management, these products provide optimal performance that aligns with sustainability objectives while enhancing comfort and security. Whether in commercial or residential settings, Johnson Controls continues to lead the way in the intelligent building sector.
Top Page Image Contents