Propane Gas Tanks And Piping - Intertek MVM97 Series Installation Instructions Manual

P G T P
ROPANE AS ANKS AND
A gas detecting warning system is the only reliable way to detect a
propane gas leak. Rust can reduce the level of odorant in propane
gas. Do not rely on your sense of smell. Contact a local propane
gas supplier about installing a gas detecting warning system. If
the presence of gas is suspected, follow the instructions listed in
the Safety Precautions section of this manual.
All propane gas equipment must conform to the safety standards
of the National Board of Fire Underwriters, NBFU Manual 58.
CANADA: National Standard of Canada, Natural Gas and Pro-
pane Installation Code (NSCNGPIC) CSA B149.1—2010.
For satisfactory operation, propane gas pressure must be 10" WC + .5" WC at the furnace manifold with all gas appliances in
operation. Maintaining proper gas pressure depends on three main factors:
1. Vaporization rate, depending on temperature of the liquid, and "wetted surface" area of the container or containers.
2. Proper pressure regulation. (Two-stage regulation is recommended for both cost and efficiency).
3. Pressure drop in lines between regulators, and between second stage regulator and the appliance. Pipe size will depend on
length of pipe run and total load of all appliances.
Complete information regarding tank sizing for vaporization, recommended
regulator settings, and pipe sizing is available from most regulator manu-
facturers and propane gas suppliers.
Since propane gas will quickly dissolve white lead and most standard com-
mercial compounds, special pipe dope must be used. Pipe dope used on
propane gas installations must be approved for use with propane
gas.
Refer to the Figure 39 for typical propane gas installations and piping.
Sizing Between First and Second Stage Regulator*
Maximum Propane Capacities listed are based on 2 psig pressure drop at 10 psig setting.
Capacities in 1,000 BTU/hour.
Pipe or
Tubing Size, O.D. Type L
Tubing
Length
Feet
3/8" 1/2" 5/8"
10 730 1,700 3,200
20 500 1,100 220
30 400 920 2,000
40 370 850 1,700
50 330 770 1,500
60 300 700 1,300
80 260 610 1,200
100 220 540 1,000
125 200 490 900
150 190 430 830
175 170 400 780
200 160 380 730
To convert to capacities at 15 psig settings - multiply by 1.130
To convert to capacities at 5 psig settings - multiply by 0.879
Propane Gas Piping Chart I
IPING
Nominal Pipe Size
Schedule 40
3/4" 7/8" 1/2"
5,300 8,300 3,200
3,700 5,800 2,200
2,900 4,700 1,800
2,700 4,100 1,600
2,400 3,700 1,500
2,200 3,300 1,300
1,900 2,900 1,200
1,700 2,600 1,000
1,400 2,300 900
1,300 2,100 830
1,200 1,900 770
1,100 1,800 720
I
F THE GAS FURNACE IS INSTALLED IN A BASEMENT
AREA OR CONFINED SPACE
CONTACT A PROPANE SUPPLIER TO INSTALL A GAS DETECTING WARNING
DEVICE IN CASE OF A GAS LEAK
S
•
INCE PROPANE GAS IS HEAVIER THAN AIR
SETTLE IN ANY LOW AREAS OR CONFINED SPACES
P
•
ROPANE GAS ODORANT MAY FADE
EXCEPT WITH A WARNING DEVICE
First Stage
Regulator
Sizing Between Second or Second Stage Regulator & Appliance*
Maximum Propane Capacities listed are based on 1/2" W.C. pressure drop at 11" W.C. setting.
Capacities in 1,000 BTU/hour.
Pipe or
Tubing
Length
3/4"
Feet
3/8"
7,500
10 39
4,200
20 26
4,000
30 21
3,700
40 19
3,400
50 18
3,100
60 16
2,600
80 13
2,300
100 11
2,100
125 10
1,900
150 9
1,700
200 8
1,500
250 8
*Data in accordance with NFPA pamphlet No. 54
WARNING
,
IT IS STRONGLY RECOMMENDED TO
.
,
ANY LEAKING GAS CAN
,
MAKING THE GAS UNDETECTABLE
.
5 to 15 PSIG
(20 PSIG Max.)
200 PSIG
Maximum
Propane Gas Installation (Typ.)
Figure 39
Tubing Size, O.D. Type L
1/2" 5/8" 3/4" 7/8" 1/2"
92 199 329 501 275
62 131 216 346 189
50 107 181 277 152
41 90 145 233 129
37 79 131 198 114
35 72 1,211 187 103
29 62 104 155 89
26 55 90 138 78
24 48 81 122 69
21 43 72 109 63
19 39 66 100 54
17 36 60 93 48
Propane Gas Piping Chart II
,
AN EXCAVATED
.
Continuous
11" W.C.
Second Stage
Regulator
Nominal Pipe Size
Schedule 40
3/4" 1" 1-1/4" 1-1/2"
567 1,071 2,205 3,307
393 732 1,496 2,299
315 590 1,212 1,858
267 504 1,039 1,559
237 448 913 1,417
217 409 834 1,275
185 346 724 1,066
162 307 630 976
146 275 567 866
132 252 511 787
112 209 439 665
100 185 390 590
35