Burnham V9 Boiler User Manual


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6
NOTES:
1. Allpipingisschedule40.
2. Pipesizeslistedarebasedona20°For40°Fdifferential
(temperature drop). Select one to match application.
Consult factory if boilers are used in low temperature
applications or blending/mixing devices.
3. Whenspeciedreturnpipingsizeislessthan3”,install
3”X12”nippleandappropriatesizebellreducerdirectly
into boiler return tapping as shown.
4. Drainvalve—ballvalvepreferable,gatevalveacceptable
alternative (supplied by others).
-MinimumvalvesizeperASMEcodeis3/4”NPT
5. Formultiplewaterboilerpiping,consultfactory.
WATER BOILER PIPING
To be used when system return water is not lessthan135°Fforprolongedperiodsoftimeandsystemowdoes not impact flow through the boiler
MODEL
SUPPLY PIPING SIZE
(IN.) (1)
RETURN PIPING SIZE (IN.)
RETURN (2)
RETURN
HEADER (2A)
RETURN BRANCH
(QTY.) SIZE (2B)
20¡F D ROP 40¡F D ROP
20¡F
DROP
40¡F
DROP 20¡F D ROP
20¡F
DROP
V903A
V904A
V905A
V906A
V907A
V908A
V909A
V910A
V911A
V912A
2
2
2
2-1/2
2-1/2
2-1/2
3
3
3
4
1-1/2
1-1/2
1-1/2
1-1/2
2
2
2
2-1/2
2-1/2
2-1/2
2
2
2
2-1/2
2-1/2
2-1/2
3
3
3
4
1-1/2
1-1/2
1-1/2
1-1/2
2
2
2
2-1/2
2-1/2
2-1/2
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
3
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
(2) 3
STEAM BOILER PIPING
NOTES:
1. Allpipingisschedule40.
2. To prevent condensate from being trapped in header, do not reduce
equalizer elbow at header connection.
3. Drain/blowoffvalve—ballvalvepreferable,gatevalveacceptable
alternative (supplied by others).
–MinimumvalvesizeperASMEcodeis3/4”NPT903A/905A;
 1”NPT906A/910A;1-1/4”NPT911A/912A.
Ð Increasing the valve size will improve the blowdown operation.
Ð In all cases, piping connection blowoff valve to boiler should be
full size to the point of discharge.
4. Forpumpedreturnsystems,seeV9Ainstallationmanual.
5. Formultiplesteamboilerpiping,consultfactory.
MODEL
PIPING SIZE (IN INCHES)
RISER SPACING
(INCHES)
RISER
(Qty.) SIZE (1)
HEADER &
SUPPLY (2)
RETURN
(3)
EQUALIZER
(4) 'A' 'B'
V903A
V904A
V905A
V906A
V907A
V908A
V909A
V910A
V911A
V912A
(1) 3
(1) 4
(1) 4
(1) 4
(2) 4
(2) 4
(2) 4
(2) 4
(2) 4
(3) 4
3
4
4
4
6
6
6
6
6
6
1-1/2
2
2
2-1/2
2-1/2
2-1/2
2-1/2
3
3
3
2
2
2
2-1/2
2-1/2
2-1/2
2-1/2
3
3
3
Ñ
Ñ
Ñ
Ñ
36
42
48
54
60
30
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
Ñ
36
V9 Series Piping Recommendations
Water and Steam
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