CleaverBrooks CBT Operation And Maintenance Manual page 25

Gas Piping
MANUAL SHUTOFF
VALVE
Pipe sizing for multiple unit manifolds
TABLE 2- 6. CBT 10 HP boilers
# of
1
Units
Pipe Size
1-1/4"
To Boiler
Header
1-1/2"
Pipe Size
TABLE 2- 8. CBT 20 HP boilers
# of
1
Units
Pipe Size
1-1/2"
To Boiler
Header
1-1/2"
Pipe Size
TABLE 2- 10. CBT 30 HP boilers
# of
1
Units
Pipe Size
2"
To Boiler
Header
2"
Pipe Size
750-382
CBT
REGULATOR (OPTIONAL)
BY INSTALLER
FIGURE 2-5. Typical gas piping - Example 2
2 3 4
1-1/4" 1-1/4" 1-1/4"
1-1/2" 2" 2"
2 3 4
1-1/2" 1-1/2" 1-1/2"
2" 2-1/2" 2-1/2"
2 3 4
2" 2" 2"
2-1/2" 3" 3"
MANUAL SHUTOFF
VALVE
STRAINER
DRIP LEG REQUIRED FOR ANY VERTICAL RUN OF PIPING
TABLE 2- 7. CBT 15 HP boilers
# of
1
Units
Pipe Size
1-1/4" 1-1/4"
To Boiler
Header
1-1/2"
Pipe Size
TABLE 2- 9. CBT 25 HP boilers
# of
1
Units
Pipe Size
1-1/2" 1-1/2"
To Boiler
Header
1-1/2"
Pipe Size
GAS HEADER - SIZE FOR BOILER ROOM
CAPACITY AND TO MINIMIZE PRESSURE LOSS
2 3 4
1-1/4" 1-1/4"
2" 2" 2-1/2"
2 3 4
1-1/2" 1-1/2"
2" 2-1/2" 3"
2-9