Blender Valve ???

[Beemerman]

My 2020 ‘19 TB (disregard my profile vehicle) has a brass valve, with round handle, like a water spigot. The 2 ports onthe valve say “H” and “C” on the opposite side. I “assume” this blends water temperature since it is under/near the water heater plumbing (under driver-side ottoman).

Does anyone have a procedure for adjusting/blending with this valve?? I’m gonna try different settings: full CW then full CCW to see effect......hoping to get some input/opinions on this plumbing.......

[nvestysly]

Not quite sure what you're referring to. A picture would help. Perhaps somebody with your exact model will reply.

Are you certain the two valves you mention aren't the low point drain valves? There are two low point drain valves, usually in an out of the way location, one for hot and one for cold. The valves typically look like a handle you might see on a faucet or used in under-sink plumbing.

on edit: maybe this is the water heater bypass valve used in the winterizing procedure.

[Titus]

I don't recall any adjustment on mine. I had to remove mine once because there was very little hot water flow. I cleaned it by soaking in CLR and it worked fine thereafter. I wonder if yours simply needs to be cleaned rather than adjusted?

[Beemerman]

Titus.....flow is good....brand new machine,, so I doubt there is corrosion builup.....just looks lioke an extra valve to me....bnetween heater drain petcock and bypass valve !!

[Titus]

Is there as much flow with a faucet in the hot position as in the cold? When working correctly mine had about equal flow in both positions. When plugged the hot flow was much less. I am speculating that mine may have got plugged when I was quickly filling the empty water heater (de-winterizing the rig) using shore water - thus stirring up debris in the botom of the tank. So I now slowly fill the water heater. I don't recall a heater drain petcock on mine - just the bypass valve and mixer valve.

[Beemerman]

Sorry for big delay...... I’m calling this brass valve a “blender” because it has a Hot side & a cold side stamped on it....
2020 19’ IS 2wd....TIA.....picture is sideways......too dumb to correct

[OTRA15]

Originally Posted by Beemerman

My 2020 ‘19 TB (disregard my profile vehicle) has a brass valve, with round handle, like a water spigot. The 2 ports onthe valve say “H” and “C” on the opposite side. I “assume” this blends water temperature since it is under/near the water heater plumbing (under driver-side ottoman).

Does anyone have a procedure for adjusting/blending with this valve?? I’m gonna try different settings: full CW then full CCW to see effect......hoping to get some input/opinions on this plumbing.......

Originally Posted by Beemerman

Sorry for big delay...... I’m calling this brass valve a “blender” because it has a Hot side & a cold side stamped on it....
2020 19’ IS 2wd....TIA.....picture is sideways......too dumb to correct

Where does the third pipe go to? [the red pipe -- on the right of your photo, as posted]

To the shower valve maybe, or to the entire plumbing system, as "tempered" hot water? [which is now "blended" so as not to scald one's skin]

Does your owner's manual cover this?

Peter

[Beemerman]

Otra....theOwners’ Manual is fairly good, but no mention. My EXT owners manual was very inclusive for the model. It appears there was a “rush” to get the 2020 19’ manuals in print.....lots of stuff that doesn’t even apply, or available to the 19 footers !!! Some items not even mentioned.

[A W Warn]

In your manual there should be a pamphlet for the water heater, that might include instruction.
This video might help>

https://www.youtube.com/watch?v=nJR-DlZuYlE

[OTRA15]

Originally Posted by Beemerman

Otra....theOwners’ Manual is fairly good, but no mention.
. . .

How about these questions in Post #7 . . . can you see where that red pipe goes?

Originally Posted by OTRA15

Where does the third pipe go to? [the red pipe -- on the right of your photo, as posted]

To the shower valve maybe, or to the entire plumbing system, as "tempered" hot water? [which is now "blended" so as not to scald one's skin]
. . .

Do you have an Alde system, as Alan seems to suggest?


Peter

[OTRA15]

Originally Posted by A W Warn

. . .
This video might help>
. . .

Does the OP's 2020 19' TB have an Alde system?

Originally Posted by Beemerman

My 2020 ‘19 TB (disregard my profile vehicle) has a brass valve, with round handle, like a water spigot.
. . .

Peter

[Beemerman]

Hi guys.....the new 2020’s have the awesome Truma hot water/heater system. Can be powered by LP, lo amp AC,Hi amp AC, or a combination. I use the Lo (800w) system with shore pwr in driveway.

[Beemerman]

Video might have answered my question(s). Different brand, but same concept....thanks all....the 19 footers have many “unique” systems, compared to the older (2019) systems

[OTRA15]

Originally Posted by Beemerman

Hi guys.....the new 2020’s have the awesome Truma hot water/heater system. Can be powered by LP, lo amp AC,Hi amp AC, or a combination. I use the Lo (800w) system with shore pwr in driveway.

Thanks for the update, and glad that Alan's video was helpful.

Originally Posted by Beemerman

Video might have answered my question(s). Different brand, but same concept....thanks all....the 19 footers have many “unique” systems, compared to the older (2019) systems

Please tell us the answer you have found for your particular valve, and whether that red pipe is a "whole system" hot water tempering valve, or just for the shower maybe?

Thanks,

Peter

[Beemerman]

Got my tech to actually move the valve shaft.....was not moving when I tried. This valve “mixes” volume of hot water avail to blend with cold water for scald protection.

We opened valve to “Max” (full counter clockwise)...with the Truma system. Truma control panel allows reasonable temp control: Eco, Hot, Boost.

All well in Tommy Land !

[pd_austx]

Revisiting this thread in-case anyone else runs into the same issue.

I had this exact same problem (2020 AS IS 19).

I tried turning that black knob and that did absolutely nothing. Spun, but just kept turning. Finally got a wrench to turn the nut under the knob which also turned the valve. Tightened everything back up (checked for leaks - none) and nice hot water.

I don’t know if the black knob is just “broken” on mine or if it was designed this way. Seemed strange.