We have a Grohe Geneva Thermostat model, 19 616 as a mixing valve with a separate flow control valve in our shower. The temperature setting on our water heater is set to about 140. The hot water coming from all of the sinks is very hot.
The temp in the shower is only warm even when set to the hottest possible setting. This is a single handle adjustment valve. There is an adjustment on the valve to set the mix temperature. However, even at the highest setting the water coming out is not as hot as the water coming from the sink hot water valve. I assume that this is some maximum high temperature setting internal to the valve.
Right now I have the valve set so that there is practically no cold setting at all. That is, when you set it to 100, and turn it down to 70, the temp does not change. That means that the adjustment lever is pulled fully off of the adjustment diaphragm. In reality I have only full hot water. BUT. we can not get the water as hot as we like.
How can I fix this so I get water as hot as from the faucet at the sink?
The temp in the shower is only warm even when set to the hottest possible setting. This is a single handle adjustment valve. There is an adjustment on the valve to set the mix temperature. However, even at the highest setting the water coming out is not as hot as the water coming from the sink hot water valve. I assume that this is some maximum high temperature setting internal to the valve.
Right now I have the valve set so that there is practically no cold setting at all. That is, when you set it to 100, and turn it down to 70, the temp does not change. That means that the adjustment lever is pulled fully off of the adjustment diaphragm. In reality I have only full hot water. BUT. we can not get the water as hot as we like.
How can I fix this so I get water as hot as from the faucet at the sink?