Rinnai 2424WC User Manual
Model 2424WC
800-621-9419
2 7
Gas Pipe Sizing Chart
I N S TA L L E R ’ S I N S TA L L AT I O N I N S T R U C T I O N S
Capacity Table for Natural Gas
cubic feet / hour
(table assumes .3 inch pressure drop, specific gravity of .60)
Nominal
Length of Pipe in Feet
Iron Pipe
Size
Inches
Size
Inches
10
20
30
40
50
60
70
80
90
100
125
150
175
200
3/4
278
190
152
130
115
105
96
90
84
79
72
64
59
55
1
520
350
285
245
215
195
180
170
160
150
130
120
110
100
1-1/4 1050
730
590
500
440
400
370
350
320
305
275
250
225
210
1-1/2 1600 1100
890
760
670
610
560
530
490
460
410
380
350
320
After determining the length of pipe required select the pipe size that will supply the
cubic feet per hour of gas required for the input rating of the Continuum 2424WC.
The formula for figuring the cubic feet per hour required is:
cubic feet per hour of gas required for the input rating of the Continuum 2424WC.
The formula for figuring the cubic feet per hour required is:
Gas Input of Continuum 2424(BTU/HR)
CFH =
Heating Value of Gas(BTU/FT
3
)
*Gas input requirement is on the water heater data plate
*The heating value of the gas can be obtained from the local Natural Gas Utility
*The heating value of the gas can be obtained from the local Natural Gas Utility
Capacity Table for LP Gas
BTUH of undiluted liquified petroleum gases
(table assumes 11 inches of water column pressure at the inlet, .5 inch drop)
Nominal
Length of Pipe in Feet
Iron Pipe
Size
Inches
Size
Inches
10
20
30
40
50
60
70
80
90
100
125
150
1/2
275
189
152
129
3/4
567
393
315
267
237
217
196
185
173
162
146
1
1071
732
590
504
448
409
378
346
322
307
275
252
1-1/4 2205 1496 1212 1039
913
834
771
724
677
630
567
511