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Gas-Pipe Connection Sizes
100% Make-Up Air & 80/20 System
Maxitrol Control System Natural Gas Connection Size
Gas Pressure ("WC)
BTU Input 7 to 13" 14 to 28" 29" to 2PSI
275 1/2 1/2 1/2
550 3/4 3/4 1/2
990 1 3/4 3/4
1375 1 1/4 3/4 3/4
1650 1 1/2 1 1
1925 2 1 1
2750 2 1 1/2 1
3025 2 1 1/2 1 1/4
3300 2 2 1 1/4
3850 2 2 1 1/2
4400 2 2 2
5225 2 1/2 2 2
7425 3 3 2
8525 3 2 1/2 2
9075 - 2 1/2 2
11825 - 3 2
15552 - 2 1/2 2 1/2
16848 - 2 1/2 3
 
 
 

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