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®
HOT WATER SUPPLY AND RETURN HEADERS
PARTS LIST AND ASSEMBLY INSTRUCTIONS
L-Series: Oil-fired Modular Boilers
Header Parts List
43-2572
43-2573
Item Part No. 2 3 4 5 6 7 8 9 10
1-1/2" Stub Header - 2 stub - 27" C-C (pkgd. separately) 43-0920 2 – 4 2 – 4 2 – 4
1-1/2" Stub Header - 3 stub - 27" C-C
Flex Joint - 1-1/2" pipe 43-2023 2 4 4 6 8 8 10 12 12
Flex Joint - 3" pipe 41-1755 4 4 8 8 8 12 12 12 16
Cast End Cap - 3/4" NPT 41-1780 1 1 1 1 1 1 1 1 1
Cast End Cap - No tap 41-1753 1 1 1 1 1 1 1 1 1
Nipple - 1-1/2" x 4" 43-0904 3 4 6 7 8 10 11 12 14
Nipple - 1-1/2" x 15" 43-0923 2 3 4 5 6 7 8 9 10
Nipple - 1-1/2" x 30" 43-0924 1 1 2 2 4 4 5 6 6
Nipple - 1-1/2" x close 43-0927 2 3 4 5 6 7 8 9 10
Square Nipple - 1-1/2" x 8" T.O.E. 43-0925 1 2 2 3 4 4 5 6 6
Square Nipple - 1-1/2" x 34" T.O.E. 43-0926 1 2 2 4 6 5 6 6 6
Union - 1-1/2" 902428071 2 2 4 4 4 6 6 6 8
Tee - 1-1/2" 43-0917 2 3 4 5 6 7 8 9 10
Bushing - 1-1/2" x 3/4"
Elbow - 1-1/2" 902454071 4 6 8 10 12 14 16 18 20
Installation Instructions 43-0901 1 1 1 1 1 1 1 1 1
(pkgd. separately) 43-0921 – 2 – 2 4 2 4 6 4
902179321 2 3 4 5 6 7 8 9 10
Header Package Order Code
Number of Modules
Part No. 43-0901
Publication CH-40L
Printed in U.S.A. 1003
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3'' RETURN HEADER
WITH 1
1
/2'' STUBS
(3 MODULE)
* 3'' BUILDING
PIPING
(BY OTHERS)
1
1
/2'' X 34'' SQUARE NIPPLE
1
1
/2'' X 30'' NIPPLE
CAST END CAP
WITH
3
/4'' TAPPING.
SUPPLY OR RETURN.
FOR USE WITH LWCO.
3'' SUPPLY HEADER
WITH 1
1
/2'' STUBS
(3 MODULE)
1
1
/2'' X 4'' NIPPLE
1
1
/2'' ELBOW
1
1
/2'' X 15'' NIPPLE
CAST END CAP
3'' RETURN HEADER
WITH 1
1
/2'' STUBS
(2 MODULE)
3'' FLEX JOINTS
(SEE DETAIL "A")
1
1
/2'' X 8'' SQUARE NIPPLE
1
1
/2'' FLEX JOINT
(SEE DETAIL "A")
1
1
/2'' X 4'' NIPPLE
FACTORY SUPPLY AND RETURN HEADER ASSEMBLY — OIL
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3'' PIPE X 20''
(BY OTHERS)
1
1
/2'' UNION
1
1
/2'' X 11/2'' X 11/2'' TEE
1
1
/2'' X 3/4'' BUSHING
3
/4'' DRAIN VALVE
1
1
/2'' X CLOSE NIPPLE
1
1
/2'' ELBOW
3'' SUPPLY HEADER
WITH 1
1
/2'' STUBS
(2 MODULE)
*3'' BUILDIING PIPE
CONNECTION
1
/2'' PRESSURE
TEMPERATURE
GAUGE
1
/2'' WELLS
3'' FLEX JOINT
(SEE DETAIL "A")
CONTROL HEADER
3'' x
1
/2'' x 1/2'' x 1/2''
*Building piping must be rigidly secured so
t cannot move where connected to
i
headers.
NOTE:
Shown reverse return (Preferred). For direct return, header assembly piping
connections may be made at the same end of the boiler bank, not as shown.
Some governing agencies do not allow compression type couplings.
Consult your local code requirements.
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C
aravan Flex Joint Assembly Instructions
. Slip the metal retainer on the system piping with the larger
1
diameter side facing the end of the pipe to be joined. The
3" flex joint has a single piece serrated metal retaining
ing. This retaining ring should be seated in the recess in
r
he inner diameter of the gasket with its mounting tabs
t
overlapping slightly where the ring splits. The 1-1/2" flex
joint has a 2 piece serrated retaining ring that must be
installed in the inner recess of the gasket with its ends
butting.
Work the gasket with the serrated metal retaining ring onto the pipe. When installing the gasket be sure the retaining rings seat
properly around the pipe. On the 1-1/2" flex joint install the bottom half of the gasket first leaving the other half of the retaining ring
free at the top. Then stretch the top of the gasket with the ring over the top of the pipe.
is needed, use a soap and water solution only.
DO NOT use any oil based lubricants.
When installing the gaskets if a lubricant
2. The gasket must be fully seated in the metal retainer (press together with pliers if necessary). BE SURE THE GASKET IS
SEATED ON AN UNTHREADED SECTION OF PIPE AT LEAST 1" FROM THE END. Slip the flared end of the Slant/Fin
header tube over the pipe and seat against the gasket. Follow illustration a or b for cast end cap or piping.
a) b)
3. Open hinged metal clamp and slip over joint. Be sure that the flared end of the steel tubing, the retainer ring and the gasket
are enclosed within the clamp.
4.
Install the bolt and lock nut and tighten the lock nut to
3”
3/8”
the following torque values: 1-1/2" flex joint is 140-160
inch-pounds, 3" flex joint is 220-240 inch-pounds.
NOTE: On 3” schedule 40 pipe, spacing between clamps is
approximately 3/8” when properly torqued.
SLANT/FIN CORPORATION, Greenvale, N.Y. 11548 • Phone: (516) 484-2600
FAX: (516) 484-5921 • Canada: Slant/Fin LTD/LTEE, Mississauga, Ontario
www.slantfin.com
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