Lp Gas Conversion - Westinghouse WGRGH20**75F Series Installation, Start-Up, Maintenance, Parts, Warranty

38
Pipe Size (in.)
10
1/2
129
3/4 303
1 605
1 1/4 971
1 1/2
1990
2
4640
Table 21 - Liquid Propane Delivery Capacity - Corrugated Stainless Steel Pipe - Refer to ANSI Z223.1 - National Fuel Gas Code, Latest Edition
Pipe Size (in.)
10
1/2
291
3/4
608
1 1150
1 1/4 2350
1 1/2 3520
2
6790
Table 22 - Liquid Propane Delivery Capacity - Black Iron Pipe - Refer to ANSI Z223.1 - National Fuel Gas Code, Latest Edition
B. LP Gas Conversion
The following instructions MUST BE FOLLOWED when converting the water heater from Natural Gas to Propane. Improper fuel conversions
could result in property damage, severe personal injury, or death.
Contact the local propane gas supplier for recommended sizing of piping, tanks, and 100% gas regulator. Adjust the propane supply
regulator provided by the gas supplier for 13" w.c. maximum pressure.
It is required to use a calibrated combustion analyzer to verify final adjustment according to the combustion chart (Table 24).
An LP Gas Conversion Kit is included in the accessory box. Conversion can only be completed by a qualified licensed professional.
Failure to follow the above instructions could result in property damage, severe personal injury, or death.
How to Convert the Water Heater to LP Gas Operation
1. Remove top service panel by loosening five (5) screws.
Figure 34 - Removing the Top Service Panel
2. Locate the gas valve towards the lower left of the unit.
Figure 35 - Locating the Gas Valve
whl-605 Rev. 002 Rel. 000 Date 1.23.19
Length of Pipe (Feet)
20 30 40
91 74 64
216 177 153
425 344 297
661 528 449
1400 1140 988
3290 2680 2330
Length of Pipe (Feet)
20 30 40
200 160 137
418 336 287
787 632 541
1620 1300 1110
2420 1940 1660
4660 3750 3210
50 60 80
58 53 45
137 126 109
265 241 208
397 359 307
884 805 696
2080 1900 1650
50 60 80
122 110 101
255 231 212
480 434 400
985 892 821
1480 1340 1230
2840 2570 2370
3. Loosen the two nuts connecting the gas tube to the gas valve.
Figure 36 - Gas Valve Nut Locations
4. Insert the LP orifice into the nozzle. Retighten the gas tube and
ensure there are no gas leaks.
Figure 37 - Inserting the LP Orifice
100 150 200
41 31 28 Hour x 1,000
98 75 69
(0.60 Specific
186 143 129
270 217 183
Pressure Drop)
621 506 438
1480 1210 1050
100 150 200
94 84 67 Hour x 1,000
197 175 140
(0.60 Specific
372 330 265
763 677 543
Pressure Drop)
1140 1010 814
2200 1950 1570
BTU's Per
Gravity,
0.5 WC
BTU's Per
Gravity,
0.5 WC