My second phone call to Moen customer service, I found out from Moen that the 1222 valve has an anti-scald setting when it diverts water to the shower. The temperature of the water needs to be between 109 and 120 degrees for the valve to work properly. The Moen customer service rep said that the valve does not work with all hot water on demand heaters. They sent out a replacement valve, in case the valve was faulty.
I replaced the valve, but the problem did not go away.
Unfortunately, the settings on our point-of-use hot water heater does not allow us to set the temperature. The gauges on the water heater are "gas regulator" and "temperature" and they adjust from low to high within a range. So it looks like the valve does not work with our unit. It worked for a while in May when temperatures were colder outside. But I have not been able to make it work at all this summer and fall. Water temperatures are higher going into the unit.
What happens is: I will run water into the tub turning the handle to hot. The temperature on the water heater will climb and settle at just under 120. In order for the hot water heater to work, I had to move the temperature setting to mid range. The hot water heater won't turn on when the temperature is set to the lowest setting.
Once the water is hot and I even add some cold to where the temperature would be comfortable to shower, then I pull the shower knob to move the flow of water up to the shower. Then the temperature begins to climb. It will climb to well above 120 degrees. Now the water coming out of the shower head is too hot. When I try mixing in cold, the water heater turns off. If I don't add cold, eventually, the hot water temperature climbs so high that the hot water heater turns off. In both cases, the water temperature drops back down and the shower is now cold.
Moen sent a new valve and I replaced it and tried again. I adjusted the temperature/gas regulator on the water heater and got the shower to work once. A few days later I tried again and it did not work again. I tried adjusting the water heater settings to no availe. I tried again the next day, same thing. It did not work.
I called Moen again and asked if there was another valve without the anti-scald regulator built into it and Moen said NO. Only the two handle units. That valve will not work with the single handled shower/tub units. Moen's solution was to turn the water heater to it's lowest temperature setting. As we know, that doesn't work with the unit I have. The heater won't even turn on.
I have installed this unit in a fiberglass surround tub/shower. So unfortunately, the only solution I see is to tear the shower unit out and install a different single handle, tub/shower unit, from a different manufacturer.
Unless?...is there a generic valve or another manufacturer valve that I can try as a replacement that would work?? Has anyone run into this problem. Are there any solutions other than replacing the unit.
I told Moen that they need to put a clear warning on their packaging with this unit that it is not compatible with all hot water on demand heaters. If I had seen a warning like this, I would have likely not bought the unit. I have a Moen unit in another bathroom that was installed in the house when it was built. So I figured I was safe and it was good quality. Not to knock quality, but very misleading and now I have to fix it or go without a shower!!! UGH!
Any suggestions or comments. Sorry to rant.
Thank you )
I replaced the valve, but the problem did not go away.
Unfortunately, the settings on our point-of-use hot water heater does not allow us to set the temperature. The gauges on the water heater are "gas regulator" and "temperature" and they adjust from low to high within a range. So it looks like the valve does not work with our unit. It worked for a while in May when temperatures were colder outside. But I have not been able to make it work at all this summer and fall. Water temperatures are higher going into the unit.
What happens is: I will run water into the tub turning the handle to hot. The temperature on the water heater will climb and settle at just under 120. In order for the hot water heater to work, I had to move the temperature setting to mid range. The hot water heater won't turn on when the temperature is set to the lowest setting.
Once the water is hot and I even add some cold to where the temperature would be comfortable to shower, then I pull the shower knob to move the flow of water up to the shower. Then the temperature begins to climb. It will climb to well above 120 degrees. Now the water coming out of the shower head is too hot. When I try mixing in cold, the water heater turns off. If I don't add cold, eventually, the hot water temperature climbs so high that the hot water heater turns off. In both cases, the water temperature drops back down and the shower is now cold.
Moen sent a new valve and I replaced it and tried again. I adjusted the temperature/gas regulator on the water heater and got the shower to work once. A few days later I tried again and it did not work again. I tried adjusting the water heater settings to no availe. I tried again the next day, same thing. It did not work.
I called Moen again and asked if there was another valve without the anti-scald regulator built into it and Moen said NO. Only the two handle units. That valve will not work with the single handled shower/tub units. Moen's solution was to turn the water heater to it's lowest temperature setting. As we know, that doesn't work with the unit I have. The heater won't even turn on.
I have installed this unit in a fiberglass surround tub/shower. So unfortunately, the only solution I see is to tear the shower unit out and install a different single handle, tub/shower unit, from a different manufacturer.
Unless?...is there a generic valve or another manufacturer valve that I can try as a replacement that would work?? Has anyone run into this problem. Are there any solutions other than replacing the unit.
I told Moen that they need to put a clear warning on their packaging with this unit that it is not compatible with all hot water on demand heaters. If I had seen a warning like this, I would have likely not bought the unit. I have a Moen unit in another bathroom that was installed in the house when it was built. So I figured I was safe and it was good quality. Not to knock quality, but very misleading and now I have to fix it or go without a shower!!! UGH!
Any suggestions or comments. Sorry to rant.
Thank you )