ELBOW
| 1/2'' PRESSURE |
3'' FLEX JOINT | TEMPERATURE |
(SEE DETAIL "A") | GAUGE |
*3'' BUILDIING PIPE
CONNECTION
1/2'' WELLS
CONTROL HEADER 3'' x 1/2'' x 1/2'' x 1/2''
3'' SUPPLY HEADER
WITH 11/2'' STUBS
(2 MODULE)
11/2'' UNION
3'' PIPE X 20'' (BY OTHERS)
11/2'' X 11/2'' X 11/2'' TEE
*Building piping must be rigidly secured so it cannot move where connected to headers.
11/2'' X 3/4'' BUSHING
3/4'' DRAIN VALVE
11/2'' X CLOSE NIPPLE
11/2'' ELBOW
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.
