The Delta faucets have an anti-scald feature that is responsible for the adjustment of the hot water temperature. The Delta faucets also have varying degrees of hot water output integrated into them.
The Delta Shower Cartridges
The Delta tub and Delta shower faucets can keep the water temperature within 3.6°F. This reduces the possibility of the water temperature changing in other appliances, such as a toilet flush.
The Delta thermostatic tub and the shower faucets are built with TempAssure valves. The pressure tub and the shower faucets on the other hand are built using Delta monitor valves. Both of the Delta shower faucets feature an adjustable limit for the handle to stop. Once they are properly set, the hot water temperature will not rise above the present level.
Get Started
Here is how to set the adjustable handle on the Delta Monitor Series 1700 and the Delta Monitor Series 1800 faucets:
Remove the handle. Using a small flat screwdriver, place it at the center of the temperature control knob and pry the plastic piece off.
For Delta Monitor Series 1700, 1800, 1300 and 1400Using your thumb and forefinger, grasp the stop dial that is in the center of the faucet. The rotational stop dial has “+” and “-” signs, as well as teeth that turn to adjust the temperature of the water.
For Delta Monitor Series 1700 and Delta Monitor Series 1800:Turn the dial clockwise to decrease the water temperature by at least 2°F for each tooth. Turn the rotational dial counterclockwise to increase the maximum hot water temperature by 2°F. For Delta Monitor Series 1300 and Delta Monitor Series 1400:Turn the rotational stop dial counterclockwise one tooth or decrease the temperature to 6°F. Turn the dial one tooth clockwise to increase the maximum hot water temperature for at least 6°F.
For Delta Monitor Series 1300 and Delta Monitor Series 1400: Turn on the tap and allow the cold and hot water to mix. When you turn on the water in the faucet, the cold water will flow first, followed by the hot water. Allow the water to run for about two minutes.
Turn the faucet control clockwise to the hottest temperature, and hold for a minute. Fill a plastic cup with hot water and place a thermometer in it. Make changes and adjustments to the degree of hotness of your water and make sure it does not exceed 120°F for the water not to be scalding.
Delta Anti-Scald Shower Valve Adjustments
Tools
A Hex-key set
Thermometer
Plastic cup
1. On the side of the Delta shower handle, there is usually a small set screw opening. Pick a hex key in the set that would perfectly fit the opening and insert it into the opening. Turn it in a counterclockwise manner so that you can loosen the setscrew and pull the shower handle off the stem. Do not remove the shower handle just yet.
2. Rotate the faucet handle counterclockwise until it stops, and let cold water run until it reaches the coldest temperature possible.
3. Move the faucet handle again to the left until it reaches the hot water level. Let the hot water flow freely from the faucet.
4. Place the thermometer inside the plastic cup and fill the cup with the hot water from the faucet.
5. Watch the thermometer to keep note of the temperature of the water, then turn off the water in the faucet.
6. Expose the rotational limit and stop the anti-scald limit by sliding off the stem. Grab the rotational limit and pull it towards you.
7. Increase the maximum temperature of the water by turning the Delta anti-scald valve to the left. Turn it to the right again to decrease the temperature of the water. Each notch can increase or decrease the water temperatures from 4°F to 16°F.
8. Replace the faucet handle and keep repeating the adjustment temperature test until you are satisfied with the water temperature settings.
9. Push the rotational limit stop the anti-scald valve against the faucet stem. Slide the handle over the stem and the anti-scald valve. Tighten the handle set screw using a hex key.
Delta faucet adjustments to prevent scalding
The advised water heater set temperature is at 120°F for both safety and energy-saving purposes.
1. Rotate your faucet’s handle to the hottest possible position and let the water run for about one or two minutes until the hot water begins to flow.
2. Place a thermometer in a plastic cup filled with hot water from the faucet. Check the temperature of the water to see if it is above the 120°F mark. Turn off the water completely and then check the thermostat on your water heater.
3. Check the temperature of the water on the thermostat of the gas water heater, and turn the thermostat down to 120°F. On the water electric heater, turn the breaker off. Expose the heating element and the thermostat by removing the bottom access button panel. Turn the thermostat dial pointer to 120°F using a small screwdriver. Turn the breaker on for the water heater and replace the bottom access panel.
4. Limit the amount of hot water flowing out of the faucet by adjusting the hot water stop on the faucet. Remove the center cap off the faucet to expose the hot water stop and faucet stem, using a small flat-head screwdriver.
5. Using a small flathead screwdriver, remove the hot water stop of the faucet stem. If your Delta faucet requires you to remove it so that you can access the stop, place the handle on the faucet.
6. Check the water temperature with the cup and the plastic cup. If you are satisfied with the set temperature, replace the stop. The stop prevents the faucet from rotating past the position that you have set, which in turn prevents accidental scalding.