Burnham K50 manual Open Steam or Water Trim Carton, Purpose of Tappings and Their Locations

e.DRAW UP CENTER SECTION SLOWLY AND EVENLY, tightening each DRAW-UP ROD a little at a time so that sections are equally spaced. KEEP NIPPLES ALIGNED WITH NIPPLE PORTS. If necessary, tap Nipples lightly with a blunt tool or rod to keep Nipples from cocking while Sections are being drawn up. DO NOT DRAW UP SECTION(S) WHEN NIPPLES ARE COCKED. Continue tightening Draw-Up Rods equally until Sections meet iron-to-iron on the ground surface. BUMPING OUTER EDGES OF SECTION WITH WOODEN BLOCK WILL EASE DRAW-UP OPERATION.

f.KEEP DRAW-UP ROD THREADS, NUTS AND WASHERS LUBRICATED with grease or heavy oil to prevent damage to rods and threads and to make assembling easier.

g.Using a pinch bar, insert WOOD WEDGES under last Center Section assembled so as to raise it just above Boiler Base. This will keep the next section to be assembled above the base, thus making

it easier to join and draw-up. MOVE WOOD WEDGES FORWARD EACH time a Section has been drawn up.

7.ASSEMBLE REMAINING END SECTION WITH DRAW-UP RODS in a manner similar to that for assembling Center Sections. Remove wedges from under Boiler. Be sure Boiler is aligned and seated on Base.

a.After section assembly is completed install 5/8” tie rods from tie rod bundle through the upper lug holes in the front of Boiler and Lower lug holes in the rear of Boiler sections and tighten until they are finger tight only, to allow for expansion. This is necessary in order to allow clearance for installation of Flue cover plates. Finally, remove ¾” draw-up rods from nipple ports.

Open Steam or Water Trim Carton

8.Use the plugs in this carton to plug tappings in End Sections that will not be utilized on final installation, see Fig. 7.

Fig. 7

PURPOSE OF TAPPINGS AND THEIR LOCATIONS

PURPOSE OF TAPPINGS 1

Location	Tapping Per	Size	Steam Boilers	Water Boilers
	End Section
A	1	3”	Supply	Supply
B	1	3”	Return	Return
C2	1	1-1/2”	Pressure Operating Control	Temperature Operating Control (less heater)
			(Bushed to 1/4”)	Bushed to 3/4”; Plug (with heater)
D	1	1/2”	Pressure Gauge	Theraltimeter
E	2	1/2”	Water Gauge, LWCO & Pressure Limit	Plug
F	1	3/8”	Try-Cock (Special Order)	----
G3	1	----	Cover Plate	Cover Plate or Tankless Heater
H	1	1”	See Note 4	See Note 4
J	1	1-1/2”	Indirect Water Heater	----
			Supply or Return
K	1	3/4”	Indirect Water Heater Limit	----

1Tappings on both end sections are identical - Recommend trim be installed in left end section or on same end as gas train.

2This tapping is used for safety valve and surface blowoff (steam boilers) and safety relief valve (water boilers) on end not equipped with trim.

3Temperature operating control location on tankless heater equipped boilers. Also alternate operating control location, tapped cover plate.

4If using a float type LWCO, feeder or pump controller on a steam boiler that does not use quick connect hook up fittings, install between tappings H and return B. Use opposite return B for system return connection. Water boilers using a probe LWCO must mount probe in supply pipe above boiler without any stop valves.

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