Dayton 7D837A Troubleshooting Guide download pdf (Page 9)

Dayton Installation, Operation, Maintenance and Parts Manual

Models 7D837A thru 7D849A, 7D851A, 7AR79 thru 7AR88

A tube heater system is being installed in 70’ (L) x 40’ (W) space with 12’ ceilings. Two overhead doors are located at one

end and an equipment storage area exists on one side. The calculated heat load is 300,000 BTU/H.

Design Scenario

Figure 2.1 • Poor Design

• Two burners (150,000 BTU/H each)

are placed at one end, opposite the

area of highest demand (overhead

doors).

• Recommended mounting heights

are not observed.

• Produces an uneven heat

distribution.

Figure 2.2 • Good Design

• Four burners (75,000 BTU/H each)

are placed in each corner. Burner

(hotter) ends direct heat to areas of

highest head demand.

• Recommended mounting heights

observed.

• Distributes heat more evenly.

Doors and

tracks

Doors and

tracks

Equipment storage

Better Heat Distribution

Sidewall Vent (2 total)

40’

70’

Gas Supply

20’ - 75,000 BTU

(4 total)

Good Design

Doors and

tracks

Too Cold

Too Hot

Equipment storage

40’

60’ - 150,000 BTU

(2 total)

Doors and

tracks

70’

Gas Supply

Poor Design

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Dayton 7D837A Troubleshooting Guide Page 9

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