Daikin DHG - Gas Supply Piping; Natural Gas Connection

13


GAS SUPPLY PIPING
WARNING









WARNING









gas and gas input rating. Make sure the unit is equipped


authorized conversion kit (see the unit Technical Manual for

latest edition of the National Fuel Gas Code NFPA 54/ANSI
Z223.1 or National Standard of Canada, Natural Gas and
Propane Installation Code, CSA B149.1.
NATURAL Min. 5.0" W.C., Max. 10.0" W.C.
PROPANE Min. 11.0" W.C., Max. 13.0" W.C.
INLET GAS PRESSURE


The minimum supply pressure should not vary from that




premature heat exchanger failure.









National Fuel Gas Code NFPA 54 / ANSI Z223.1.

1/2
3/4
1
1 1/4
1 1 /2
10
132
278
520
1050
1600
20
92
190
350
730
1100
30
73
152
285
590
980
40
63
130
245
500
760
50
56
115
215
440
670
60
50
105
195
400
610
70
46
96
180
370
560
80
43
90
170
350
530
90
40
84
160
320
490
100
38
79
150
305
460
Pressure= .50 PSIG or less and Pressure Drop of 0.3" W.C.
(Based on 0.60 Specific Gravity Gas)
Natural Gas Capacity of Pipe
in Cubic Feet of Gas Per Hour (CFH)
Nominal Black Pipe Size (inches)
Length of
Pipe in Feet
Heating Value of Gas (BTU/Cubic Foot
CFH =
BTUH Furnace Input


1. 


codes.
2. 

fuel used.
3. 
4. 

of three inches long.
5. 
the gas valve to keep it from turning.
6. 󰀨

7. 
8. 

• 
• 

exterior locations).