Hayward H300 LP test


Old 05-12-14, 01:39 PM
Thread Starter
Join Date: May 2014
Location: United States
Posts: 1
Received 0 Votes on 0 Posts
Hayward H300 LP test


I just bought a house in Jacksonville, FL that came with a Hayward H300 pool/spa heater. There have been some yard drainage problems and the in-ground propane tank from the previous owner is under water and has been disconnected at the heater. I managed to alleviate the drainage problem, but it has been under for quite some time. The regulator on that tank crumbled while I tried inspecting it, but the gauge still says it has 5 PSI in it.

Anyway, I would like to test the heater with a 20lb tank and see if it is worth calling up the propane company to come work on the tank. According to the manual, the heater burns at 300k BTU, needing 11wc (about 15 PSI I think). I believe it has an internal regulator which further reduces to what it needs.

I tried calling the distributor (Sawyer Gas) and they had no notes as to why it had been disconnected. When they disconnected it, all I have is a 1/2" OD copper pipe coming out of the ground, a large gap, and a 1" OD galvanized pipe with a sediment trap.

I know that the 20lb tank will freeze up at the rate I need, but I would like to test and make sure it works. Would this regulator work as it has 0-30psi, high pressure, 3/8 tubing?Amazon.com: Bayou Classic 0-30 PSI Adjustible Regulator/Hose Assembely: Patio, Lawn & Garden and then the various fittings to adapt to the 1" galvanized?

Currently, when I turn the heater on and adjust the thermostat, I can hear the solenoid open, igniter spark several times before it gives up, and close the solenoid, so it appears functional.

Thank you in advance.
Sponsored Links
Old 05-13-14, 12:01 AM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,595
Received 337 Votes on 315 Posts
Welcome to the forums.

I don't think you are going to be able to use a 20# tank for testing as your heater requires 300K btu.

A 20lb cylinder will produce approximately...
35,000btu at 0 F
50,000btu at 20 F
65,000btu at 40 F
80,000btu at 60 F
90,000btu at 70 F

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Display Modes
Ask a Question
Question Title:
Your question will be posted in: