Whirlpool WGFD293 Installation Instructions Manual page 30

93% and 95% 2-stage variable speed gas furnace
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Complete information regarding tank sizing for vaporization,
recommended regulator settings, and pipe sizing is available
from most regulator manufacturers and propane gas suppliers.
Since propane gas will quickly dissolve white lead and most
standard commercial compounds, special pipe dope must be
used. Shellac-based compounds resistant to the actions of
liquefied petroleum gases, such as Gasolac
or John Crane
®
are satisfactory.
Refer to "Propane Gas Installation—Typical" for typical propane
gas installations and piping.
Sizing Between 1
st
and 2
nd
Maximum propane capacities listed are based on 2 psig pressure drop at 10 psig setting. Capacities in 1,000 Btu/h.
Propane Gas Piping Chart I
Pipe or Tubing Length—ft (m) ³⁄₈"
10 (3)
20 (6.1)
30 (9.2)
40 (12.2)
50 (15.2)
60 (18.3)
80 (24.4)
100 (30.5)
125 (38.1)
150 (45.7)
175 (53.3)
200 (61)
To convert to capacities at 15 psig settings—multiply by 1.13. To convert to capacities at 5 psig settings—multiply by 0.879.
Sizing Between Single or 2
Maximum Propane Capacities Listed are Based on ¹⁄₂" W.C. pressure drop at 11" W.C. setting. Capacities in 1,000 Btu/h.
Propane Gas Piping Chart II
Pipe or Tubing Length—ft (m) ³⁄₈"
10 (3)
20 (6.1)
30 (9.2)
40 (12.2)
50 (15.2)
60 (18.3)
80 (24.4)
100 (30.5)
125 (38.1)
30
®
, Stalactic
®
, Clyde's
Stage Regulator*
Tubing Size, O.D. Type L
¹⁄₂"
730
1,700
500
1,100
400
920
370
850
330
770
300
700
260
610
220
540
200
490
190
430
170
400
160
380
nd
Stage Regulator and Appliance*
Tubing Size, O.D. Type L
¹⁄₂"
⁵⁄₈"
39
92
199
26
62
131
21
50
107
19
41
90
18
37
79
16
35
72
13
29
62
11
26
55
10
24
48
Propane Gas Installation—Typical
A
®
A. 1
st
stage regulator
B. 5 to 15 psig (20 psig maximum)
C. 200 psig maximum
⁵⁄₈"
³⁄₄"
⁷⁄₈"
3,200
5,300
8,300
2,200
3,700
5,800
2,000
2,900
4,700
1,700
2,700
4,100
1,500
2,400
3,700
1,300
2,200
3,300
1,200
1,900
2,900
1,000
1,700
2,600
900
1,400
2,300
830
1,300
2,100
780
1,200
1,900
730
1,100
1,800
Nominal Pipe Size Schedule 40
³⁄₄"
⁷⁄₈"
¹⁄₂"
329
501
275
216
346
189
181
277
152
145
233
129
131
198
114
121
187
103
104
155
89
90
138
78
81
122
69
B
D
C
D. 2
nd
stage regulator
E. Continuous 11" W.C.
Nominal Pipe Size Schedule 40
¹⁄₂"
³⁄₄"
3,200
7,500
2,200
4,200
1,800
4,000
1,600
3,700
1,500
3,400
1,300
3,100
1,200
2,600
1,000
2,300
900
2,100
830
1,900
770
1,700
720
1,500
³⁄₄"
1"
1¹⁄₄"
567
1,071
2,205
393
732
1,496
315
590
1,212
267
504
1,039
237
448
913
217
409
834
185
346
724
162
307
630
146
275
567
E
1¹⁄₂"
3,307
2,299
1,858
1,559
1,417
1,275
1,066
976
866

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