Siemens LFL Series Service Manual download pdf (Page 5)

FIRING RATES (A)

During operation, burner output varies between:

• MAXIMUM OUTPUT, selected within area A,

• and MINIMUM OUTPUT, which must not be lower

than the minimum limit in the diagram.

RS 160 /M LN = 1136 MBtu/hr = 333 kW

Important

The FIRING RATE area values have been obtained

considering an ambient temperature of 68 °F (20 °C),

and an atmospheric pressure of 394 “WC and with the

combustion head adjusted as shown on page 8.

Note:

The FIRING RATE areas given in figure (A) have been

reduced by 10% with respect to the maximum range that

can be reached.

Consult Procedure on page 15 to refer burner operating

condition in high altitude plants.

MINIMUM FURNACE DIMENSIONS (B)

The firing rates were set in relation to certified test boil-

ers.

Figure (B) indicates the diameter and length of the test

combustion chamber.

Example:

Output 2579 MBtu/hr:

diameter = 23.6 inch; length 6.6 ft

COMMERCIAL BOILERS (C) - IMPORTANT

The RS 160/M LN burner is suitable for operation on ei-

ther flame-inversion boilers* or boilers with combustion

chambers featuring flow from the base (three flue pass-

es) on which the best results are obtained in terms of low

NOx emissions.

The maximum thickness of the boiler’s front door must

not exceed 10” (see fig. C).

(*) For flame inversion boilers, a kit is available to reduce

CO emissions if required.

The kit includes 5 gas pipes, identical to the other 5

already fitted to the burner head. In standard condi-

tions, the burner head is fitted with a second group of

pipes, with gas outlet in a different direction with re-

spect to the others. With this Kit, the second group of

pipes is replaced, so that all the pipes are the same.

After fitting the kit, ensure they work correctly by

measuring the CO and flue gases emissions.

(A)

RS 160/M LN

D2798

Combustion chamber pressure

“WC

(B)

D2919

10” max

D1079

(C)

Diameter (inches)

Length (feet)

Recommended furnace dimensions

Firing rate for C-UL Canadian Listing (CNL)

6302 MBtu/hr

1 2 3 4 5 6 7 8 9 10 ... 27 28

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Siemens LFL Series Service Manual Page 5

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