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Don’t be fooled by the phrase “tankless.” RV tankless water heaters nonetheless maintain a small quantity of water, often a few liter. Throughout freezing temperatures, this water can freeze and crack the pipes resulting in or from the water heater if it’s not correctly winterized.
With producers going tankless on extra of their RVs, it’s best to know learn how to winterize an RV tankless water heater.
The right way to Drain an RV Tankless Water Heater
Tankless water heaters have to be drained recurrently in accordance with the producer’s advice. These water heaters don’t hand over all their water when gravity-draining or utilizing air to blow water out of the tank and plumbing traces. This implies you’ll want so as to add RV antifreeze to winterize them correctly.
That stated, the method begins with draining the water heater and your water system. Right here’s how you should use gravity to empty your tankless water heater:
- Open the new water taps inside your RV and allow them to run till the water turns chilly, permitting 2-3 minutes for the tank to chill if it has not too long ago been heated.
- Flip off the fuel and energy to the water heater and water pump.
- Disconnect from metropolis water.
- Take away the drain plug and filter to permit the water to empty.
That technique is sufficient when performing fundamental upkeep, after which the system can be refilled with water. Extra is required when winterizing your RV, and Tenting World prohibits utilizing or promoting a fundamental winterizing bundle on models with a tankless water heater.
Our upgraded winterization service consists of blowing air out of the tank and features, adopted by filling your unit’s water system with RV antifreeze. Contact your native Tenting World RV Service Middle to be taught extra about this service and get a quote right now.
The right way to Winterize an RV Tankless Water Heater
Tankless water heaters from completely different producers require various winterization procedures. Examine along with your water heater producer for his or her most modern winterization suggestions.
Listed below are the 4 fundamental steps that RV service technicians will take when winterizing a tankless water heater:
1. Flip off the Propane and Energy
This retains your water heater from trying to reheat an empty tank or heating RV antifreeze as soon as added.
2. Disconnect from Water and Permit it to Cool
You have to be disconnected from metropolis water and have your water pump turned off to forestall your tank from being refilled as you drain it. Run sizzling water for 2-3 minutes, or till it’s cool to the contact, earlier than draining.
3. Drain the Whole Water System, together with the Water Heater
Take away the water heater’s drain plug and open the recent water tank drain and low-point drains. Permit gravity to empty many of the water out of your system. Shut these valves after draining to forestall the lack of antifreeze within the subsequent step.
Technician Tip: Skilled RV technicians usually join compressed air to an RV’s metropolis water inlet to blow the water out of RV plumbing traces and water heater tanks (on fashions with DSI and tankless water heaters). This requires a particular machine that regulates air stress so it doesn’t exceed 30 PSI, which might injury your RV’s plumbing system.
4. Run Antifreeze By way of the System
Seek the advice of your proprietor’s guide for the advisable quantity of antifreeze so as to add to your system, as it should range primarily based on the scale of your holding tanks. Most RVs will use 2-4 gallons of antifreeze for correct winterization.
Set the water heater’s management panel to metropolis water (if relevant). Add antifreeze to your system by pumping it from the bottle into your metropolis water inlet. You’ll additionally must pour a small quantity (1-2 cups) down every fixture – sinks and showers – so as to add antifreeze to the P-traps.
Antifreeze have to be run by means of your complete system to forestall pipes from cracking in freezing temperatures. Run every faucet till the fluid exiting turns pink. In contrast to conventional water heaters, it’s best to NOT bypass a tankless mannequin throughout winterization as a result of this is able to forestall the right distribution of the antifreeze.
Study extra about RV antifreeze.
When it’s time to arrange your RV for winter storage, listed here are a number of extra helpful assets:
What model of tankless water heater do you’ve and what questions do you’ve about winterizing yours? Tell us within the feedback under.
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