Gas Line Pipe Sizing - Temco ADF3310N-4 Operating Instructions Manual

NOTE: To determine the size of the branch gas line from the main gas line to the fireplace, enter the tables below (for iron
pipe or copper tubing) using the distance from the gas meter or second stage regulator to the furthest appliance on the
gas system. Select a pipe or tube diameter which has enough capacity to meet the maximum input requirement of the
fireplace. Regardless, do not use less than 1/2" diameter for the branch line. For any distances required longer than
shown in these tables, refer to the National Fuel Gas Code.
NOTE: There may be a local gas utility requirement specifying a minimum diameter for gas piping. All units require a 1/2 inch pipe
connection at the gas valve.
Length
of 1/2" D
Pipe Natural
20' 92
30' 73
40' 63
50' 56
60' 50
70' 46
90' 40
100' 38
Tubing Length
Feet
10
20
30
40
50
60
80
100
WARNING: Use only internally tinned copper tubing. If correct copper tubing is not used, tubing can deteriorate and
develop gas leaks.
•
Position the top log so the hole on the bottom fits
over the peg on top of the rear log. The top log is
positioned correctly when it extends over the portion
of the burner that has a single row of ports (holes).
If the top log extends over a slotted row of ports, it is
not in the correct positon.
CAUTION: Proper log location is critical for
trouble-free operation. Ensure that the front and
back log are centered in the grate and are vertical
as seen from the side. There must be no impinge-
ment of the flames from the burner on any log.
78623

Gas Line Pipe Sizing

CAPACITY OF PIPING
Cubic Feet per Hour based on 0.3" w.c. Pressure Drop
Specific Gravity for Natural Gas - 0.6 (1000 BTU/Cubic Foot)
Specific Gravity for Propane Gas - 1.6 (2550 BTU/Cubic Foot)
Nominal Inches for Iron Pipe Sizes (1,000s BTU/hr)
3/4" D
Propane Natural Propane
143 190 296
115 152 237
97 130 202
87 115 179
79 105 163
71 96 151
61 84 130
59 79 122
Outside Diameter Copper Tubing, Type L (1,000s BTU/hr)
1/2"
0.43
110
76
61
52
46
42
36
32
1" D
Natural Propane Natural
350 546 730
285 444 590
245 380 500
215 334 440
196 304 400
180 280 370
160 250 320
150 235 305
5/8" 3/4"
0.545 0.666
206 348
141 239
114 192
97 164
86 146
78 132
67 113
59 100
Decorative Volcanic Ash
The volcanic ash provided should be sprinkled on the
hearth pan and up to the front burner shield. Do not
sprinkle volcanic ash around or on the burner or logs.
WARNING: Failure to position the parts in accor-
dance with this diagram or failure to use only
parts specifically approved with this heater may
result in property damage or personal injury. Do
not alter logs!
Temco ADF3310 Series
1¹⁄₄" D 1¹⁄₂" D
Propane Natural Propane
1135 1100
918 890
778 760
683 670
622 610
576 560
497 490
474 460
7/8"
0.785
536
368
296
256
224
203
174
154
1711
1385
1183
1043
949
872
763
717
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