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Pipe Sizing Table - Natural Gas
Schedule 40 Metallic Pipe
Inlet Pressure:
less than 2 psi (55 inches W.C.)
Pressure Drop: 0.3 inches W.C.
Speci c Gravity: 0.60
cubic feet per hour
Length
3/4
10
273
20
188
30
151
40
129
50
114
60
104
70
95
80
89
90
83
100
79
Pipe Sizing Table - Propane Gas
Schedule 40 Metallic Pipe
Inlet Pressure:
11.0 inches W.C.
Pressure Drop: 0.5 inches W.C.
Speci c Gravity: 1.50
Capacity in Thousands of BTU per Hour
Length
1/2
10
291
20
200
30
160
40
137
50
122
60
110
80
101
100
94
48
Pipe Size (inches)
1
1 1/4
514
1060
353
726
284
583
243
499
215
442
195
400
179
368
167
343
157
322
148
304
Pipe Size (inches)
3/4
1
1 1/4
608
1150
2350
418
787
1620
336
632
1300
287
541
1110
255
480
231
434
212
400
197
372
Connect Electricity
WARNING
Do not use an extension cord or an adapter plug with
this appliance.
The water heater must be electrically grounded in
accordance with local codes and ordinances or, in the
absence of local codes, in accordance with the
Na onal Electrical Code, ANSI/NFPA No. 70.
1 1/2
Indoor water heaters are equipped with a three-
1580
prong (grounding) plug for your protecti n against
1090
shock hazard and should be plugged directly into a
properly grounded three-prong receptacle. Do not
873
cut or remove the grounding terminal from this plug.
747
662
Do not rely on the gas or water piping to ground the
600
water heater. A screw is provided in the junc on box
for the grounding connec on.
552
The water heater requires 120 VAC, 60 Hz power from
514
a properly grounded circuit.
482
If using the 5 foot long power cord, plug it into a
455
standard 3 prong 120 VAC, 60 Hz properly grounded
wall outlet.
On outdoor models, a disconnect switch must be
provided and installed for the incoming 120 VAC
power. It should be a type that is suitable for outdoor
use. Check the National Electrical Code, ANSI/NFPA
70 and your local codes for a proper switch type to
use in your area.
The wiring diagram is located on the Technical Sheet
a ached to the inside of the front cover.
985
892
821
763
KBP Series Manual
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