6 Gallon POS Water Heater

[j.o.]

Can anyone tell me the GPM flow rate of a Richmond 6 gallon POS 120v mini tank water heater, model# 6MT6-1? I cannot find this information. I called the manufacturer, but they could not provide this information.

 

[Rickyman]

Post a link so we don’t have to type all that into google

 

[j.o.]

https://www.menards.com/main/plumbi...r-heater/6mt6-1/p-1958440146154024-c-8690.htm

 

[wpns]

What are you trying to figure out? The recharge rate? What rate you can flow continuously at a given temperature rise? How fast you can get that first 6 gallons out?

What are you trying to do with it?

 

[Twowaxhack]

Youll probably get 80% of the 6 gal tank at the thermostat temp settting before you notice a drop in temp.

At normal pressure 50-70psi with full flow 3/4” pipe you would empty that heater in SECONDS.

These are general numbers. Yours may vary because I didn’t run any specific numbers.

 

[j.o.]

Sorry, I should have elaborated. The reason I ask is because the cold water inlet downsizes to what looks like 3/8“. There is a metal ring surrounded by a rubber grommet. This appears to be the dip tube. I installed a tankless water heater a month ago, and this 6 gallon tank is planned to be a downstream buffer tank. If this inlet configuration will stifle my flow I will take it back and get something better. The other option would be to remove the dip tube assembly completely. Since I will be feeding in hot water, I am not sure I really need it. I don‘t want to take a chance at installing it and then not be able to return it. My only real concern is losing flow rate from the downsized inlet.

 

[Twowaxhack]

I’d go with a 10 gal 120v heater.

 

[j.o.]

There is a space constraint imposed by my wife (her laundry room.) I need to keep the size down, and the small tank water heater is perfect. I am just not sure if this one will impede the flow. The intent is to buffer out fluctuations.

 

[Twowaxhack]

There is a space constraint imposed by my wife (her laundry room.) I need to keep the size down, and the small tank water heater is perfect. I am just not sure if this one will impede the flow. The intent is to buffer out fluctuations.

Try it and see

 

[j.o.]

I am hesitant to install this unit only to find out it will not work. Assuming that the downsizing of the inlet is the dip tube assembly, and I have problems with hot water volume, I need to be sure the dip tube and grommet, etc. can be removed, leaving an unrestricted flow. I am also hesitant to remove the dip tube before installation because I will likely damage everything inside the inlet. I have never had to remove the dip tube from a water heater, and I do not recall the inlet being downsized like this in the past.

 

[Twowaxhack]

I am hesitant to install this unit only to find out it will not work. Assuming that the downsizing of the inlet is the dip tube assembly, and I have problems with hot water volume, I need to be sure the dip tube and grommet, etc. can be removed, leaving an unrestricted flow. I am also hesitant to remove the dip tube before installation because I will likely damage everything inside the inlet. I have never had to remove the dip tube from a water heater, and I do not recall the inlet being downsized like this in the past.

I suggested a 10 gallon 120v. I use them for the purpose you’re wanting it for.

If you don’t want to do that then try what you have but I doubt it’ll work.

 

[j.o.]

What brand do you suggest?

 

[Twowaxhack]

Rheem

 

[breplum]

High quality tankless water heaters don’t need buffer tanks. Navien has an internal insulated and heated buffer tank built in.
The recirc option can be set to INTERNAL...that is what keeps the minitank up to temp.

 

[Twowaxhack]

High quality tankless water heaters don’t need buffer tanks. Navien has an internal insulated and heated buffer tank built in.

Not everyone wants to circulate water.

But if I wanted a tankless that did offer circulation then it sure wouldn’t be a Navien. South Korean junk

 

[j.o.]

Thanks.