Question about Grohe Integrated 1/2'' Shower Thermostatic Rough-In Valve With Stops - 3412

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Can the Grohsafe temp be adjust to a higher setting

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My water heater is very slow to warm water to take a shower with. I cannot find the manual for it, and have no experience adjusting a heater. Heard am supposed to drain the heater at times need advice


first im going to assume its an electric model , as this is what ill describe on how to adjust and repair .


electric water heaters have two sets of heaters inside them , one that maintains a water heat temp and one that heats the incoming water (sometimes refered to as instant )

looking on sideof heater there should be two covers , one towards top and one kinda at the bottom , the cover at top can be removed to expose the instant water heat temp , now care needs to be taken here as power is exposed and present , looking inside here should reveal a round thing with two screws on it , kinda looks lke a large bolt with two screws on it , this is the heater coil , and just next to it a rectangular thing with six screws on it this is the thermostat , if should have a tiny dial on it and be marked off in degress numbers , this dial should be set 10 to 20 higher than bottom heater (under bottom cover exact same thing there .) if not use plastic knife (table ware ) NOt metal to turn setting till this is achieved , this is how to adjust it , but by your description I suspect one of your heaters has gone open and not heating anymore , they do sell simple kits to repair your own heater and there not expensive less than fifty bucks and most times can be done by owner (follow instructions to letter ) or your in for a mess or worse

and yes once a year you should drain off a few buckets of water from bottom tap to keep sediments from damaging heaters

Jun 03, 2017 | Water Water Heaters

1 Answer

How do you increase the water temp?


Hi Donna:
The temperature is pre-set and is intended to be not too hot to inadvertently burn someone. Increasing the setting can cause a real SAFETY HAZARD, especially if small children or seniors are involved.
With that in mind, there will be a panel that unscrews from the side of the heater. After removing it, lift the insulation back and a dial should be visible. There will be numbers, and a pointer with a screw slot in the centre. Turning the pointer to a higher number will increase the temperature.
If you are going to adjust it, only do so a very small amount at one time, until you reach the desired temperature.
Remember, increasing the temperature will not give you more hot water, it will only give you hotter water. If you need more hot water, consider getting a larger tank or an "on demand" gas fired unit.
STAY SAFE!

Jan 12, 2016 | Water Water Heaters

1 Answer

Heater not getting hot enough


Open the access door to the thermostat ( about 3" wide & 9" high, two screws) At the bottom of the thermostat there is an adjustment screw on an arrow and dial. Factory settings are at 120% for residential heaters. Reset to 135% is hot but it will not scald anyone. Higher temps are dangerous especially to those used to the old setting (if there are 2 doors reset both thermostats)

Jan 31, 2015 | Water Water Heaters

1 Answer

Turn temp higher


If this is an electric water heater, there generally is an upper & lower thermostat behind the upper & lower panel. Open the panels, and their will be a dial with temperature setpoints that you can change with a flat screwdriver. It may be a good idea to turn the power off before taking panels off and making adjustments.

Jan 15, 2015 | Water Heaters

1 Answer

I have a triangle tube challenger boiler. D.W & radiant. It has a drop in temperature about 1.5 -3 min. after turning water on. In shower and in sinks. Was able to watch tank and feel water from laundry...


A lot depends on the size of the tank. And when it heats some systems only heat at night , this is ok if the system is large , on most heaters there is a thermostat on the side that can be used to set to a higher temp. the thermostat on your heater may be faulty.

Dec 04, 2014 | Water Heaters

1 Answer

Adjusting Apollo hot water tank


I am not sure what you are asking, But i am going to assume that you want to know about changing the Temp on the heater for inside the house.
If the floor heat was installed properly than it should have a temperture manifold or adjustable thermostat for seperate heating.
You need to find the thermostat or manifold for the garage heat and set it at what ever temp you want the garage to stay at.
Then you can change the A B C knob to a higher setting A is cold B is warm ac is hot. So Increase your temp setting on the heater and this will increase your house water temp for hotter showers and faucet temps. However, they recommend not setting the temp above 120 degrees to prevent severe burns.
If you have a newer home increasing the Hot water heater temp setting may not change the temp at the shower or faucets if you have scald guard faucets installed in the house. This will require adjusting the scald guard valves on each faucet.
I recommend using a candy thermometer or digital thermometer to check the faucet and shower Temp prior to using them and make sure that you inform everyone in the house after you change the temp so that no one gets scalded.
I hope this answers you question, feel free to contact me if you need more help!
DR Wilkins

Oct 15, 2013 | Water Heaters

1 Answer

Need to up water temp in a 50 gal rheem 82v52 electric no dial obvious


The two blue rectangular cover plates, held on by two scews, cand be removed by taking out screws. There might be a little piece of insulation present when you pull off the panel, pull that out. You will see a pointer that is shaped kind of like an egg, pointing at numbers which represent temp in degrees. Start with the lower dial, this is your thermostat, Raise temp setting by 10 deg. Hypothetically, depending on what your present setting is, try setting lower thermostat at 130 and upper at 120. Your lower thermostat should be higher than the upper because of heat rising, it is more effecient and both thermostats don't have to be at the same temp. This will save you money in the long run.

May 25, 2011 | Rheem 50 GAL ELEC TALL Water Heater 6YR SC...

1 Answer

The temperature in my shower is very luke warm only at the shower


Do you mean the other faucets in the house are hot and only the shower is warm? If so there is an anti-scald adjustment on the faucet that needs to be turned up a few notches. Havent adjusted a Grohe faucet but most faucets you rmove the handle and behind the handle is a nothced adjustment ring that prevents the faucet from getting too hot. This ring, or stop, is pulled out and twisted clockwise(or counter clockwise to set higher or lower max temp, then pushed back. maybe you can look up grohe to see which way ring or stop adjusts for hotter water.

Jan 23, 2010 | Grohe Integrated 1/2'' Shower Thermostatic...

1 Answer

Unit cycles,every 5 seconds while hot tap is on.Will fire eventually, but is reading 80 or less on the thermostat in the morning. I unplug unit and try again.Propane unit,530DVP. 2 years old, first season...


you need ot set the temp up higher, the temp it is showing you is what it is set at,, it is not a thermomiter, it is the setting, hold the up button in and the numbers will go up then you will get water at what the reading is

Jun 26, 2009 | Rheem Tankless Hot Water Heater...

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