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Old 08-05-2008, 11:26 PM   #1
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hot water cylinder


There are two typs available. One is low pressure, other one is high pressure(or main pressure). Which one is the best option to install. I am going to add two room and one bath, I want to install seperate hot water supply for my new addition.

Is there any advantages and disadvantaged on those two type.

Is there any possiblity to ruprure the main pressure one. Does it use more current.

With low pressure, can i get good water mixing temperture.

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Old 08-06-2008, 05:13 AM   #2
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hot water cylinder


This doesn't make any sense. All hot water heaters I have ever seen are designed to take the pressure from the main, or from the PRV.

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Old 08-06-2008, 05:02 PM   #3
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hot water cylinder


The documents (or manual for main pressure) says there is is a pressure relife valve need to be test every 6 months etc.
Is there any routine test to be carried on to avoid any dangers.
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Old 08-06-2008, 06:12 PM   #4
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hot water cylinder


I'm assuming you're talking about a water heater...

The relief valve is a T&P (temp and pressure) blowoff. Yes, you're supposed to test them to ensure they'll open if and when needed. When you test them, plan on replacing them. They don't tend to re-seal perfectly once they've been opened, and the blowoff line may drip.
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Old 08-07-2008, 08:05 AM   #5
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hot water cylinder


While you are replacing the T & P Valve, go ahead and replace the drain valve at the bottom of the tank with a Brass valve. This will allow you to flush the tank as a part of your regular maintenance. This can greatly increase the life of a water heater.
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