Burnham K50 manual Open Gas Controls Cartons

c.Length of piping in feet and number of elbows – for practical purposes each 90º elbow can be considered as the following equivalent in length of straight pipe:

3/4”	-	2.1 ft.	2”	-	5.2 ft.
1”	-	2.6 ft.	2-1/2”	-	6.2 ft.
1-1/4”	-	3.5 ft.	3”	-	7.7 ft.
1-1/2”	-	4.0 ft.	4”	-	10.1 ft.

d.Specific gravity of gas

In the absence of requirements of the authority having jurisdiction, the tables below may be used to size natural gas supply piping.

A pipe thread compound resistant to the action of liquefied petroleum gases must be used on all threaded joints in the gas piping.

Pressure testing of the Gas Supply Piping Boiler and its connections is required before placing the boiler in operation.

The boiler and shutoff valve must be disconnected from the gas supply piping system during any pressure testing at pressures greater than ½” psig.

The boiler must be isolated from the gas supply piping system during any pressure testing at pressures equal to or less than ½ psig.

WITH GAS SUPPLY “OFF” and Service Piping connected to the boiler, open Manual Valve(s) and pilot valve(s) at end of Gas Train(s) and reduce pressure to ½ lb. gage pressure. Using soap solution or other approved method check gas train piping, pilot piping, bleed piping and orifices for leaks.

38.THE INSTALLATION OF THE REMAINDER OF THE GAS CONTROLS IS DEPENDENT ON THE CONTROL SYSTEM FURNISHED. REFER TO THE TABLE BELOW FOR THE FIGURES IN THIS MANUAL APPLICABLE TO THE VARIOUS CONTROL SYSTEMS OFFERED AS STANDARD OR AS OPTIONAL EQUIPMENT. IF THE CONTROL SYSTEM ORDERED IS NOT LISTED, SPECIAL INSTRUCTIONS HAVE BEEN PREPARED BY THE APPLICATION ENGINEERING DEPARTMENT AND CAN BE FOUND IN THE INSTRUCTION ENVELOPE FURNISHED WITH THE BOILER.

	CONTROL		NATURAL GAS					LP			REFERENCE
BOILER SIZE		USA		CANADA		USA			CANADA
	SYSTEM										FIGURES
		STD	OPT	STD	OPT	STD	OPT		STD	OPT
6 thru 9 sect.	EI	X	---	---	X	X	---		---	---	28, 29
10 thru 26 sect.	EI	X	---	---	X	---	---		---	---	28, 30
6 thru 26 sect.	EI		---		X	---	---		---	---	28, 30
6 thru 9 sect.	EO	---	X	---	X	---	X		X	---	31, 32, 33
10 thru 13 sect.	EO	---	X	---	X	X	---		X	---	31, 32, 33
14 sect.	EO	---	X	X	---	X	---		X	---	31, 32, 33
15 thru 24 sect.	EO	---	X	---	X	X	---		X	---	31, 32, 33
26 sect.	EO	---	X	X	---	X	---		X	---	31, 32, 33
6 thru 14 sect.	EE	---	X	---	X	---	---		---	---	33, 34
15 thru 26 sect.	EE	---	X	---	X	---	---		---	---	33, 34
6 thru 14 sect.	EOP	---	X	---	---	---	X		---	---	35, 36
15 thru 26 sect.	EOP	---	X	---	---	---	X		---	---	35, 36
6 thru 14 sect.	EEP	---	X	---	---	---	---		---	---	37
15 thru 26 sect.	EEP	---	X	---	---	---	---		---	---	37
6 thru 13 sect.	Thermocouple	---	---	X	---	---	---		---	---	38
15 thru 24 sect.	Thermocouple	---	---	X	---	---	---		---	---	39

Open Gas Controls Carton(s)

NOTE: On those boilers with two manifolds (15 sect. and larger), two identical sets of Gas Controls are furnished. Hence, the procedure for installing one set is equally applicable to the second set.

32