Factory supply and return header assembly — gas, Complete header assembly kit shown for 3 modules – Slant/Fin G-Series User Manual
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• Building piping must be rigidly
secured so it cannot move
where connected to headers.
NOTE:
Shown reverse return. 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.
FACTORY SUPPLY AND RETURN HEADER ASSEMBLY — GAS
Complete header assembly kit shown for 3 modules.
CAST END CAP
1-1/2” FLEX JOINT
(SEE DETAIL “A”)
SUPPLY HEADER
WITH THREE 1-1/2” STUBS
1-1/2” UNION
3” FLEX JOINTS
(SEE DETAIL “A”)
1-1/2” NIPPLE 8”
SUPPLY HEADER
WITH TWO
1-1/2” STUBS
3” FLEX JOINT
(SEE DETAIL “A)
1/2” TRIDICATOR
GAUGE
CONTROL HEADER
3” x 1/2” x 1/2” x 1/2”
3” BUILDING PIPING
CONNECTION
1/2” WELLS
1-1/2” SQUARE NIPPLE x 10”
1-1/2” TEE
1-1/2” x 1/4” BUSHING
TRIDICATOR
1-1/2” NIPPLE x 4”
CAST END CAP
WITH 3/4” TAPPING
RETURN HEADER
WITH TWO 1-1/2” STUBS
1-1/2” SQUARE NIPPLE x 20”
1-1/2” x 3/4” BUSHING
1-1/2” NIPPLE x 18”
3/4” DRAIN VALVE
(BY OTHERS)
1-1/2” NIPPLE x 8”
RETURN HEADER
WITH THREE 1-1/2” STUBS
* 3” BUILDING PIPING
(BY OTHERS)
3” PIPE x 28”
TYPICAL
(BY OTHERS)
32” TYP.