CleaverBrooks CBT - Page 25

750-382
CBT
2-9
Gas Piping
FIGURE 2-5. Typical gas piping - Example 2
DRIP LEG REQUIRED FOR ANY VERTICAL RUN OF PIPING
GAS HEADER - SIZE FOR BOILER ROOM
CAPACITY AND TO MINIMIZE PRESSURE LOSS
MANUAL SHUTOFF
VALVE
MANUAL SHUTOFF
VALVE
REGULATOR (OPTIONAL)
BY INSTALLER
STRAINER
TABLE 2- 6. CBT 10 HP boilers
TABLE 2- 8. CBT 20 HP boilers
TABLE 2- 10. CBT 30 HP boilers
TABLE 2- 7. CBT 15 HP boilers
TABLE 2- 9. CBT 25 HP boilers
# of
Units
12 3 4
Pipe Size
To Boiler
1-1/4” 1-1/4” 1-1/4” 1-1/4”
Header
Pipe Size
1-1/2” 1-1/2” 2” 2”
# of
Units
12 3 4
Pipe Size
To Boiler
1-1/2” 1-1/2” 1-1/2” 1-1/2”
Header
Pipe Size
1-1/2” 2” 2-1/2” 2-1/2”
# of
Units
12 3 4
Pipe Size
To Boiler
2” 2” 2” 2”
Header
Pipe Size
2” 2-1/2” 3” 3”
# of
Units
12 3 4
Pipe Size
To Boiler
1-1/4” 1-1/4” 1-1/4” 1-1/4”
Header
Pipe Size
1-1/2” 2” 2” 2-1/2”
# of
Units
1234
Pipe Size
To Boiler
1-1/2” 1-1/2” 1-1/2” 1-1/2”
Header
Pipe Size
1-1/2” 2" 2-1/2” 3"
Pipe sizing for multiple unit manifolds