Understanding hot water

You bought from a dealer, correct(2019)? They should demonstrate all of the systems for you.

If there's water in your fresh water tank, run the hot faucet until water comes out. If you get water, the valve is open, there's water in the heater, so you can turn it on. If you get no water, you need to open the supply valve for the water heater. This valve should be downstream from the water pump...most likely after a 'T' in the supply line. Once you find and open the valve run the hot faucet again...

There should also be a manufacturers diagram of the fresh water system, showing which position all valves should be in, for regular use as well as water heater bypass(for winerization). Good luck.

1 fill the tank with water
2 turn on the electric
3 wait 90 minutes.

For quicker heating use both the propane and electric settings.

The water may be much hotter than in a home, so use caution when adjusting the temperature of the shower.

never ever turn the electric heater on till your sure theres water in the tank, it will burn up the heating electric element.

roadrat2 wrote:
If there's water in your fresh water tank, run the hot faucet until water comes out. If you get water, the valve is open, there's water in the heater, so you can turn it on. If you get no water, you need to open the supply valve for the water heater. This valve should be downstream from the water pump...most likely after a 'T' in the supply line. Once you find and open the valve run the hot faucet again...

If you get water from the hot faucet, it does not guarantee there’s water in the water heater. If it’s bypassed, you’ll just get cold water.

You have to be sure the valves are not set in bypass mode and/or pull on the relief valve to see if you get any water out when the system is pressurized.

wnjj wrote:
If you get water from the hot faucet, it does not guarantee there’s water in the water heater. If it’s bypassed, you’ll just get cold water.

Yes - that's the way mine works. It has 2 valves on it. One shuts off the fill for the tank and the other bypasses the tank outlet. If the latter is in the bypass position I'll still get cold water out of the hot side.

On mine the only sure way to tell if there's water in the tank is to open the drain on the outside.

YMMV

Many RVs have a single water heater bypass switch, sometimes some where near the water connections. You turn it to BYPASS to route water around the WH, or to NORMAL to route water thru the WH. Turn it to normal, open a hot water faucet, wait until you get good water flow (meaning no air being pushed out), and then you can turn on the water heater.

Some RVs have one, two, or three valves on the back side of the water heater. These valves are turned one way to bypass the WH or anther way to run water thru the WH. You need to make sure water is going thru the WH before turning it on. The link below shows different valve arrangements. Find the one that matches yours. The link shows how to configure the valves to bypass the WH for winterizing, so you would need to turn them the opposite for normal use.

Water heater info

See the pics in this thread , that shows the valves for bypassing the WH to winterize it or summarize it. Read the entire post for WH info.
Best of luck with your new TT .
http://www.rv.net/forum/index.cfm/fuseaction/thread/tid/29649491/srt/pa/pging/1/page/2.cfm

Look at the backside of water heater (from inside the RV)

Need to OPEN cold water inlet to WH Tank (bottom valve)
Need to CLOSE 'bypass valve' (on line that connects cold inlet with hot outlet)
Hot outlet....might have a valve that needs to be OPEN but more likely no shutoff valve but a check valve that will OPEN when water flows out of WH Tank


Water Heater Tank will take a while to fill ----6 gal/10 gal

Post BRAND/MODEL of water heater for SPECIFIC info


On Edit: Looking at photos you have an Atwood
S/B a dual on/off switch with RED light between switches
Left side for electric element (need 120V AC Power and 12V DC)
Right side for propane (need propane AND 12V DC)

12V DC used for control power for both electric and propane
Electric element and DC Relay on backside of WH Tank
Propane is DSI (electronic spark)

T-stat is pre-set to OPEN at 140*F and CLOSES at 110*F (to heat/reheat water)
ECO (Energy Cut Off/HI temp t-stat) OPENS at 180*F and triggers RED FAULT Light on switch panel
*ECO will CLOSE when water temp drops below 150*F BUT FAULT Light/Control circuit has to be reset by turning switch OFF--wait 30 seconds--turn back ON

If propane fails to light off and prove it lit....circuit board makes 3 attempts then 'locks out'----triggers RED Fault Light (same reset procedure)
**common issue when FIRST using RV after propane has been valved out

roadrat2 wrote:
You bought from a dealer, correct(2019)? They should demonstrate all of the systems for you.

If there's water in your fresh water tank, run the hot faucet until water comes out. If you get water, the valve is open, there's water in the heater, so you can turn it on. If you get no water, you need to open the supply valve for the water heater. This valve should be downstream from the water pump...most likely after a 'T' in the supply line. Once you find and open the valve run the hot faucet again...

There should also be a manufacturers diagram of the fresh water system, showing which position all valves should be in, for regular use as well as water heater bypass(for winerization). Good luck.

WRONG!!!

The bypass valves diverts the cold water line back through the hot water line. The bypass valve allows antifreeze to flow from the cold water line back through the hot water lines without filling the water heater with antifreeze when you winterize. With the water heater bypassed you will still get water cold water coming out of the hot water side of the faucets. The water heater can still be empty.

The bypass valves are so you do not have to fill the water heater with RV antifreeze when you winterize. All that does is move the valves so the antifreeze goes through a line between the water heater inlet and outlet, instead of through the water heater. The water heater should be drained for winterizing, with no antifreeze in it.

To use the water heater, you should turn the bypass valves so that the cold water goes into the water heater, fills it, and goes out the water heater. DO NOT turn on the water heater until you are sure it is full of water.