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Old 04-25-2018, 10:26 PM   #1
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Hot water issue

When I turn on the hot water it is kind of a trickle low pressure both city water and pump it seems that there is some air in it. When I turned on the heat it was hot but only a little and then went cold. I'm pretty sure I filled it before turning on heat I could hear it filling. When I turn the hot water shut off valve it seems to produce more flow when it's part way on.
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Old 04-25-2018, 11:09 PM   #2
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If when open you have water and air mixed coming out you want to purge this. If it’s trapped in the hot water tank, you might try taking the outer cover off the water heater and at the top of the there Is a pressure relief valve with a flipper on it. Carefully open the flipper with gloves on and you might get a significant air discharge and then a flow of water. Flip the flipper back close and go inside and open the bathroom taps and and see if they’ll run straight water and then the sink taps. Hopefully you’ll have all the air out of the system and get a better flow.
That’s what I did the other day when setting the trailer up for the season.
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Old 04-26-2018, 12:03 AM   #3
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Pix of the valve Dave is talking about.
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File Type: jpg pressure relief open.jpg (172.0 KB, 36 views)
File Type: jpg pressure relief.jpg (178.6 KB, 51 views)
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Old 04-26-2018, 12:07 AM   #4
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Quote:
Originally Posted by Fox hunt View Post
When I turn the hot water shut off valve it seems to produce more flow when it's part way on.
What shut off valve? Do you mean the faucet, or one of the two valves involved in bypassing the water heater?
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Old 04-26-2018, 01:24 AM   #5
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Yes the valve I shut when winterizing
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Old 04-26-2018, 01:25 AM   #6
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I will try the flipper thing in the morning
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Old 04-26-2018, 01:36 AM   #7
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Quote:
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I will try the flipper thing in the morning
Is this the flipper thing?
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File Type: jpg bypass.JPG (146.5 KB, 16 views)
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Old 04-26-2018, 07:24 AM   #8
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Flipper thing

Quote:
Originally Posted by gbaglo View Post
Is this the flipper thing?
Iím sorry I was not more precise in my description. On the hot water tank at the top of the tank on the outside access panel end of the tank is a pressure relief valve. Itís a safety device however it also has a manual metal tab which can be lifted to rleave pressure in the tank. Itís usually used to make sure thereís no hot water under pressure if the anode is removed at the bottom of the tank but can also be activated to release air pressure in the tank. This allows the tank to fill completely with water which you will sense when water starts to run out of the valve spout. Itís worth a try.
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Old 04-26-2018, 08:09 AM   #9
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Kate, after you use Dave's method with opening the relief valve, with your hose hooked up to city water, leave just the hot water tap on in the kitchen or bathroom, the water pressure should be able to push any remaining air out of the system. Sometimes you have to let it run for a while. Make sure you have the bypass valves that Glenn posted the picture of completely turned the right directions too.
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Old 04-26-2018, 08:17 AM   #10
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Quote:
Originally Posted by Iowa Dave View Post
Iím sorry I was not more precise in my description. On the hot water tank at the top of the tank on the outside access panel end of the tank is a pressure relief valve. Itís a safety device however it also has a manual metal tab which can be lifted to rleave pressure in the tank. Itís usually used to make sure thereís no hot water under pressure if the anode is removed at the bottom of the tank but can also be activated to release air pressure in the tank. This allows the tank to fill completely with water which you will sense when water starts to run out of the valve spout. Itís worth a try.

Iowa Dave


Per the Suburban ownerís manual, the hot water tank is designed to maintain a small volume of air during use, which is used to accommodate thermal expansion. There are even instructions for how to re-establish the air pocket, should it be inadvertently lost during prolonged use of the tank. There is no mention of using the overpressure relief valve to deliberately remove the air pocket. Just sayiní.
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