Nat. Gas Heater Addition with specs.
#1
01-20-20, 05:48 PM
Nat. Gas Heater Addition with specs.
First post, thanks all for any help available. I'm weighing my options on installing a NG heating unit.
Please see spec sheet attached.
Questions are:
- New proposed line would be 3/4, I'm planning.
- Will my current pipe diameters handle the addition.
- The chances of all appliances running at the same time is virtually zero.
Again, thanks for your time.
Please see spec sheet attached.
Questions are:
- New proposed line would be 3/4, I'm planning.
- Will my current pipe diameters handle the addition.
- The chances of all appliances running at the same time is virtually zero.
Again, thanks for your time.
#2
01-21-20, 04:51 AM
Group Moderator
First I would check your gas meter to make sure it can deliver the gas volume needed. Even if you don't think there is a chance all appliances will be on at the same time... you should still plan for it because Murphy's Law says it will happen on a really cold Sunday morning.
#4
01-22-20, 07:09 PM
Super Moderator
1" main at 65 ft supports 247k btu.
You can pipe to the heater with 1/2"
Does not matter. code is code. But your borderline with any fudge factor.
You can pipe to the heater with 1/2"
The chances of all appliances running at the same time is virtually zero.
#5
01-23-20, 07:34 PM
Thanks to you each. Few follow up thoughts:
I will eventually be adding an outside NG grill to this system at 48K btu, probably about 5yrs out.
- The stub is off of the 1", 9ft run directly beside the boiler.
- The proposed grill line would run 25ft.
- I imagine all 1" would need to be replaced with 1-1/4" to handle proposed heater & grill eventually?
I realize I could work on this with the charts, but instead of reinventing the wheel, I'd feel better listening to professionals who do this work everyday.
Again, thanks for your time.
I will eventually be adding an outside NG grill to this system at 48K btu, probably about 5yrs out.
- The stub is off of the 1", 9ft run directly beside the boiler.
- The proposed grill line would run 25ft.
- I imagine all 1" would need to be replaced with 1-1/4" to handle proposed heater & grill eventually?
I realize I could work on this with the charts, but instead of reinventing the wheel, I'd feel better listening to professionals who do this work everyday.
Again, thanks for your time.
#6
01-23-20, 07:40 PM
Super Moderator
Well down here in the south the gas companys often increase the psi to a 2psi system.
That will increase the line to 1million BTUs say.
Then you need a regulator at each appliance... 40 bucks a pop..
That will increase the line to 1million BTUs say.
Then you need a regulator at each appliance... 40 bucks a pop..
#8
01-23-20, 07:54 PM
Thanks, I'm in CT. I don't believe they do the psi pop. I asked my boiler installer 2 yrs ago when they installed about these "hypothetical additions" and he said 1-1/4" is likely, but he would have liked to run the numbers on the chart again. This is where my assumption came from.
Thanks again for your thoughts.
Thanks again for your thoughts.
#9
01-23-20, 08:05 PM
Super Moderator
1 1/4 get 486k. run up to boiler tee..
less then 2psi chart .5" pressure drop...
http://ecodes.biz/ecodes_support/fre...tallations.pdf
less then 2psi chart .5" pressure drop...
http://ecodes.biz/ecodes_support/fre...tallations.pdf
Last edited by lawrosa; 01-23-20 at 08:06 PM. Reason: put in correct link
