Burnham ES2 Appendix F Adjusting Gas Input Rate, LP/Propane Gas Boilers, Leak Test Gas Piping

APPENDIX F – Adjusting Gas Input Rate (continued)

Table F-1: Gas Flow Rate in Cu. Ft. / Hr.

Seconds for Two	Size of Gas Meter Dial
	One-Half	One	Two
(2) Revolutions
	Cu. Ft.	Cu. Ft.	Cu. Ft.
24	150.0	300.0	450.0
26	138.4	276.9	415.3
28	128.5	257.1	385.7
30	120.0	240.0	360.0
34	105.8	211.7	317.6
38	94.7	189.4	284.2
42	85.7	171.4	257.1
46	78.2	156.5	234.7
50	72.0	144.0	216.0
55	65.4	130.9	196.3
60	60.0	120.0	180.0
65	55.3	110.7	166.1
70	51.4	102.8	154.2
80	45.0	90.0	135.0
90	40.0	80.0	120.0
100	36.0	72.0	108.0
120	30.0	60.0	90.0
140	25.7	51.4	77.1
160	22.5	47.0	67.5
180	20.0	40.0	60.0
200	18.0	36.0	54.0

(1)Remove Main Burners per procedure in Boiler Service instructions in Section (X).

(2)Remove gas orifices. Drill each orifice

one (1) drill size larger (drill size is stamped on orifice).

(3)Reinstall gas orifices and main burner. Repeat procedure to measure input rate.

15.Recheck Main Burner Flame.

16.Return other gas-fired appliances to previous condition of use.

LP/Propane Gas Boilers:

1.Follow the procedure for gas boilers, except:

2.Adjust tank regulator for gas valve inlet pressure of 13.5 inches w.c. or less, but not less than 11.5 inches w.c.

3.Gas valve has step-opening regulator, which initially opens to 1.4 to 2.5 inches w.c. and steps to full pressure after approximately 30 seconds. Check manifold pressure after step has occurred.

Leak Test Gas Piping:

The boiler and its gas connections must be leak tested and

leak free before placing boiler in operation.

For leak testing over ½ psig, disconnect boiler and its individual shut-

off valve from gas supply piping.

1.For testing at ½ psig or less, isolate boiler from gas supply piping by closing boiler’s individual manual shut-off valve.

2.Check for gas leaks in all piping joints, valves, and fittings using a non-corrosive leak detection solution or an electronic leak detector.

3.Repair any leaks.

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