Lennox International Inc TUA45S, TUA125S Gas Flow, LP/PROPANE GAS Manifold Pressures in.wg. kPa

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TABLE 7

LP/PROPANE GAS MANIFOLD PRESSURES - in.wg. (kPa )

ALTITUDE FT. (M)

MODEL

0-2000

2001-3000

3001-4000

4001-5000

5001-6000

6001-7000

7001-8000

8001-9000

9001-10000

(0-610)

(610-914)

(915-1219)

(1220-1524)

(1524-1829)

(1829-2134)

(2134-2438)

(2439-2743)

(2744-3048)

 

 

 

 

 

 

 

 

 

 

 

TUA045SL

9.5 (2.37)*

7.4 (1.84)

6.7 (1.67)

6.1 (1.52)

5.5 (1.37)

4.9 (1.22)

4.4 (1.10)

3.9 (0.97)

3.4 (0.85)

TUA060SL

9.5 (2.37)*

7.4 (1.84)

6.7 (1.67)

6.1 (1.52)

5.5 (1.37)

4.9 (1.22)

4.4 (1.10)

3.9 (0.97)

3.4 (0.85)

TUA075SL

9.5 (2.37)*

7.4 (1.84)

6.7 (1.67)

6.1 (1.52)

5.5 (1.37)

4.9 (1.22)

4.4 (1.10)

3.9 (0.97)

3.4 (0.85)

TUA100SL

9.0 (2.24)*

7.0 (1.74)

6.4 (1.59)

5.8 (1.44)

5.2 (1.30)

4.7 (1.17)

4.2 (1.05)

3.7 (0.92)

3.2 (0.80)

TUA125SL

9.0 (2.24)*

7.0 (1.74)

6.4 (1.59)

5.8 (1.44)

5.2 (1.30)

4.7 (1.17)

4.2 (1.05)

3.7 (0.92)

3.2 (0.80)

*No adjustment required.

Gas Flow

Check for proper gas flow to the unit heater.

1.Operate unit at least 15 minutes before checking gas flow. Determine the time in seconds for one revolution of gas through the meter.

2.Compare the number of seconds and the gas meter size in table 8 to determine the gas flow rate. Multiply the gas flow rate by the heating value to determine the unit input rate. If manifold pressure is correct and the unit input rate is incorrect, check gas orifices for proper size and restriction.

3.Remove temporary gas meter if installed.

NOTE – To obtain accurate reading, shut off all other gas appliances connected to meter.

TABLE 8

Gas Flow Rate (Ft.3/Hr.)

Seconds for 1

 

 

Gas Meter Size

Revolution

½ cu ft Dial

1 cu ft Dial

10

 

180

360

12

 

150

300

14

 

129

257

16

 

113

225

18

 

100

200

20

 

90

180

22

 

82

164

24

 

75

150

26

 

69

138

28

 

64

129

30

 

60

120

32

 

56

113

34

 

53

106

36

 

50

100

38

 

47

95

40

 

45

90

42

 

43

86

44

 

41

82

46

 

39

78

48

 

38

75

50

 

36

72

52

 

35

69

54

 

33

67

56

 

32

64

58

 

31

62

60

 

30

60

Natural = 1000 btu/cu ft

 

LP = 2500 btu/cu ft

Note: Table assumes standard temperature (60°F), barometric pressure (30 in Hg), and fuel heating values (btu/cu ft). Fuel heating values may vary, contact local fuel supplier to obtain actual heating value of fuel being supplied.

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Contents TUA*SN,LA,SF Table Of Contents45, 60, and 75 Unit Dimensions Unit Clearances 125 Unit DimensionsRequirements CSA in the USA ShippingRequirements CSA in Canada Combustion and Ventilation Air Unit Heater InstallationVenting and Combustion Air Inlet Horizontal Venting General Vent and AIR Intake Termination on Single Wall VentHorizontal Venting-Commercial Recommendations and Requirements. In areas Condensate Drain Through TEE Pipe and Drain LoopGeneral Recommendations RequirementsCondensate Drain Through Vent Termination Vertical Vent Requirements Horizontal Venting Residential InstallationHorizontal Vent Requirements Horizontal Venting-Residential Two PipesHorizontal Venting Concentric Kit Residential Horizontal Venting Concentric Vent InstallationRemoval Of Unit From Common Vent Electrical Connections Line Voltage Field WiringLeak Check Gas ConnectionGAS Supply to Unit Heater GAS Supply Connection Operation for Honeywell VR8205 Series Gas Valve Figure Unit Start-UpAttempt to light the burners manually White Rodgers 36E GAS ValveRobertshaw 2000DER GAS Valve To light the burners manuallyOptional Gas Conversion Kit To Turn Off Gas To UnitHeating Sequence of Operation Ignition Control LEDLimit Control Louver Vane AdjustmentCombustion Air Inducer Proving Switch Flame Rollout SwitchLP/PROPANE GAS Manifold Pressures in.wg. kPa Gas FlowGas Flow Rate Ft.3/Hr Combustion Air Blower Repair PartsBurners Flue Passageway and Flue BoxTUA45/60/75/100/125SN,LA,SF

TUA45S, T-CLASS TM SEPARATED COMBUSTION UNIT HEATERS, TUA75S, TUA100S, TUA60S specifications

Lennox International Inc. stands out as a leader in the heating and cooling industry, and its T-Class™ Separated Combustion Unit Heaters, including models such as TUA60S, TUA100S, TUA125S, and TUA45S, epitomize innovation and efficiency. These unit heaters are engineered to provide reliable warmth in commercial and industrial environments, ensuring comfort and productivity even in the coldest conditions.

One of the most significant features of the T-Class™ heaters is their separated combustion design. This technology allows the heater to draw air for combustion from outside the building, which means that interior air remains untouched and is not used for heating. This design not only improves indoor air quality but also enhances energy efficiency by minimizing heat loss.

The TUA60S, with a heating capacity of 60,000 BTUs, is ideal for smaller spaces, while the TUA100S provides a robust 100,000 BTUs, making it suitable for medium-sized areas. For larger installations, the TUA125S delivers a powerful 125,000 BTUs, ensuring even the most expansive environments remain comfortably warm. Lastly, the TUA45S is perfect for smaller facilities or specific zones requiring efficient heating solutions.

These heaters are equipped with advanced technology such as modulating burners that adjust the heat output based on the current temperature needs, leading to energy savings and reduced operational costs. The T-Class™ units are designed with reliable components, ensuring longevity and reducing maintenance requirements. Additionally, the exterior reflects a modern and durable finish, ensuring they withstand the rigors of industrial settings.

Installation is straightforward thanks to their flexible configurations, allowing for both vertical and horizontal venting options. This adaptability makes them suitable for various applications, from warehouses to manufacturing plants.

In terms of safety, Lennox emphasizes top-tier mechanisms, including built-in safety limits and high-temperature shutoff features to prevent overheating. Furthermore, their models are compliant with industry regulations, reflecting Lennox International's commitment to safety and environmental stewardship.

In conclusion, Lennox International Inc.’s T-Class™ Separated Combustion Unit Heaters, including the TUA60S, TUA100S, TUA125S, and TUA45S, offer a blend of efficiency, reliability, and advanced technology. These heaters are suitable for a variety of commercial and industrial applications, ensuring optimal comfort while prioritizing safety and energy savings.
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