Burnham K50 Boiler User Manual


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11
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nger
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nal
installation, see Fig. 7.
FIG. 7
PURPOSE OF TAPPINGS AND THEIR LOCATIONS
PURPOSE OF TAPPINGS
1
Location
Tapping Per
End Section
Size Steam Boilers Water Boilers
A 1 3” Supply Supply
B 1 3” Return Return
C
2
1 1-1/2”
Pressure Operating Control
(Bushed to 1/4”)
Temperature Operating Control (less heater)
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) ----
G
3
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 ----
1
Tappings on both end sections are identical - Recommend trim be installed in left end section or on same end as gas train.
2
This tapping is used for safety valve and surface blowoff (steam boilers) and safety relief valve (water boilers) on end not equipped with trim.
3
Temperature operating control location on tankless heater equipped boilers. Also alternate operating control location, tapped cover plate.
4
If using a oat type LWCO, feeder or pump controller on a steam boiler that does not use quick connect hook up ttings, 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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