Nat gas line size calculations etc.

[VooDooMan]

Hey fellas.

Just moved into a new residence. Among many renovations wife would love to opt for gas range..... Oh joy.
I like to play safe and hold 2 trades tickets. With that said id love some assistance.

Main line is 3/4 npt and is branching off at various points to 1/2 npt.
Furthest point of line runs to the garage heater.....
@ 38 ft 3/4 npt - 45k btu ( last 8 ft reduced down to 1/2 npt )
@ 10ft 3/4 npt - 88k btu furnace ( last 1 ft reduced to down to 1/2 npt )
@ 10ft 3/4 npt - 45k btu HWT ( last 6 ft reduced to down to 1/2 npt )
@ 18 ft 3/4 npt - 50k btu PROPOSED NEW GAS RANGE ( reduced to 1 or 2 ft 1/2 npt ? )
The last run to the range is all ready there from a previous run for a nat gas fireplace. Its just capped off ready to accept some black pipe or csst.


I have lots of online literature regarding gas line sizing but would love to hear from a veteran who does alberta gas fitting. What chart or calculations do you use to figure out this max btu the 3/4 npt line can handle at these distances.


I appreciate the help.

[Dewey Cox]

All the relevant charts are in the gas codebook.

[Robins36]

Need the total distance from the meter to the furthest fixture.
Pm me your email and I will send you the screen shot from the code book.

Daryl

[hawken]

Total distance from the meter to the furthest fixture for 3/4"
Up to 30' = 262 Mbh
40' = 224 Mbh
50' = 199 Mbh
60' = 180 Mbh

You have 228 Mbh
You will have to tie the new line in within 2' of the meter.
Also, any gas work done requires a permit.

[CaberTosser]

Hawken has it. To add to his mention of the permit, I know that Calgary does not allow homeowners to pull gas permits. Homeowner plumbing permits yes, but gas work needs a licensed gasfitter to perform it legally.

[VooDooMan]

Thanks for all the replies.

Hawken. You added up all my btus to come to 228. Mbh is thousands of btu per hour. Correct ?
From my digging I came to the same conclusion. Ill have to T off from the meter.
Can you run csst from the meter or any thing outdoors / meter connection has to be black pipe ?

I can indeed pull my own permit according to https://www.edmonton.ca/programs_ser...s-permits.aspx

What does thy say for a new run from the meter to my range. 1/2 npt ?
What is the actual mbh for 1/2 npt at 20 30 40 ft?

Thanks again.