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1.
Suggested piping for steam heating system can be
seen in Figure #7. Actual piping may vary based on
system design and local conditions.
2.
For further piping information refer to the I=B=R instal-
lation piping guide.
3.
See
Figure #8 for typical piping for domestic hot water
NOTE: BOTH 2" SUPPLY TAPPINGS MUST
BE USED. ALL NEAR BOILER SUPPLY HEADER
PIPING MUST BE A MINIMUM OF 2". DO NOT
REDUCE.
OPTIONAL ONE OR TWO
TAKE-OFFS TO SYSTEM
HEADER
RECOMMENDED SIZING
3 SECTION: 2"
4 SECTION: 2.1/2"
5, 6, 7 SECTION: 3"
PIPE RELIEF VALVE
WITHIN 12" OF FLOOR
OR IN ACCORDANCE WITH
LOCAL CODES
24" MIN.
WATER LINE
C L
28"
22.1/2"
PIPING FOR BUILT-IN
PIPING FOR BUILT-IN
DOMESTIC HOT wATER HEATER
DOMESTIC HOT WATER HEATER
UNTEMPERED HOT WATER TO
AUTOMATIC WASHER
UNTEMPERED
WATER
HOT
FLOW
CONTROL
REGULATOR
T & P VALVE
COLD WATER IN
CONNECTING SUPPLy AND RETURN PIPING
Figure #7
12" MIN.
1.1/2" MINIMUM. IF RETURN
PIPING IS LARGER,
INCORPORATE SIZE TO EQUAL
THE RETURN PIPE SIZE.
SUPPLY
CONNECTION
CLOSE NIPPLE
SKIM TAPPING
HARTFORD LOOP
ON BACK
OF BOILER
C L
2"
CLEANOUT TEE'S
FROM BOTTOM OF BOILER
Figure #8
TEMPERING VALVE
INSTALLED BELOW CENTER
LINE OF BOILER HOT
CONNECTION
DOMESTIC
HOT WATER
COLD WATER
heater.
4.
See
Figures #9 and #10 for the suggested piping for a
modular steam boiler.
SUGGESTED PIPING FOR MODULAR
STEAM BOILERS - PUMPED RETURN
F & T TRAP HIGH
LEVEL "SPILL"
(DO NOT USE WITH
CONDENSATE PUMP)
CONNECTION
TO
RECEIVER
TANK
CHECK
VALVE
FROM
SOLENOID
RECEIVER
VALVE
TANK
(OPTIONAL)
RETURN MAIN
SUGGESTED PIPING FOR MODULAR
STEAM BOILERS - GRAvITy RETURN
2"
STOP
CHECK
VALVE
VALVE
(OPTIONAL)
7
Figure #9
PUMPED RETURN
STOP
VALVE
BLOWOFF
STOP
VALVE
VALVE
FROM
RECEIVER
TANK
Figure #10
GRAVITY RETURN
STOP
VALVE
28"
BLOWOFF
VALVE
TO
SYSTEM
TRAP
TO
RECEIVER
TANK
WATER
LINE
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