Installation Guide
Table Of Contents
- Chapter 1: Introduction
- Chapter 2: Description of System Components
- Chapter 3: Sizing and Configurations
- Chapter 4: Installation Practices
- Chapter 5: Inspection, Repair, and Replacement of CSST
- Chapter 6: Pressure Test Procedures
- Chapter 7: Sizing/Capacity Tables
- Chapter 8: Technical Information Sheet
- Chapter 9: Definitions
HOME-FLEX CSST 47
Liquid Petroleum (LP) Sizing Tables
Table 7.7 Low Pressure LP (11 in w.c. with
0.5 in w.c. drop)
Maximum Capacity of HOME-FLEX® CSST in BTU/h
(British Thermal Units per Hour) of
LiquidPropane(LP)Gas by Length of Piping Run
(Approximate 2,520 BTU/h LP Gas per 1 CFH; based on a
1.52 specic gravity of gas)
Inlet Pressure
: 11 in w.c. Pressure Drop: 0.5 in w.c.
Run (ft.)
Tubing Size
(EHD)
½" (EHD 18) ¾" (EHD 25) 1" (EHD 31)
5 150k 447k 990k
10 108k 316k 672k
15 90k 258k 535k
20 78k 223k 455k
25 70k 200k 402k
30 65k 182k 363k
40 56k 158k 309k
50 51k 141k 273k
60 47k 129k 246k
70 43k 119k 226k
75 42k 115k 217k
80 41k 112k 210k
90 39k 105k 196k
100 37k 100k 185k
125 33k 89k 163k
150 30k 82k 147k
200 26k 71k 125k
300 22k 58k 100k
400 19k 50k 85k
500 17k 45k 75k
Table 7.8 Medium Pressure LP (13-14 in w.c.
with 2.5 in w.c. drop)
Maximum Capacity of HOME-FLEX® CSST in BTU/h
(British Thermal Units per Hour) of
LiquidPropane(LP)Gas by Length of Piping Run
(Approximate 2,520 BTU/h LP Gas per 1 CFH; based on a
1.52 specic gravity of gas)
Inlet Pressure: 13-14 in w.c. Pressure Drop: 2.5 in w.c.
Run (ft.)
Tubing Size
(EHD)
½" (EHD 18) ¾" (EHD 25) 1" (EHD 31)
5 322k 1,000k 2,449k
10 232k 712k 1,661k
15 192k 584k 1,324k
20 168k 507k 1,127k
25 151k 454k 994k
30 139k 416k 898k
40 121k 361k 764k
50 109k 324k 675k
60 100k 296k 609k
70 93k 274k 559k
75 90k 265k 537k
80 87k 257k 518k
90 83k 243k 485k
100 79k 230k 458k
125 71k 207k 404k
150 65k 189k 365k
200 57k 164k 310k
300 47k 134k 247k
400 41k 117k 211k
500 37k 105k 186k
k = 1,000 BTU/h EXAMPLE: 252k = 252,000 BTU/h = 100 CFH (Cubic Feet per Hour) of LP Gas
Equivalent Hydraulic Diameter (EHD): A theoretical sizing which is used to compare the
hydraulic performance between manufacturers. A higher EHD number indicates greater
ow capacity of piping.
Tables include losses for four 90 degree bends and two (2) end ttings. Tubing runs with
larger numbers of bends and/or tting shall be increased by an equivalent length of tubing
according to the following formula: L = 1.3 x (n) where L is the additional length of tubing
necessary and n is the number of additional ttings and/or bends.