Winterizing tankless water heater
Our new 2023 Wolf Pup 14CC has a tankless Furrion water heater, which is new for this model year. Furrion manual says blowing it out with air or running pink stuff through it is OK. Finding some hor...
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This is the procedure for a 7k Aqua hot on large Diesel motorhomes.
When it’s time to store a motor home for the winter
months or when freezing temperatures are expected, it’s
crucial to properly winterize the Aqua-Hot to avoid serious
damage, requiring a complete system replacement not covered under the Aqua-Hot Limited Warranty Statement. The
process of winterization consists of completely draining the
domestic water from the system and pumping RV winterization antifreeze through to flush out the system.
This is ONLY thru the fresh water system, not the furnace system. I blow out the Aquahot and complete RV system then run RV antifreeze thru the Aqua Hot. Aqua Hot is adamant, that the small 1/8 inch coiled copper tubes in the heat exchanger fluid, even blowing out there will still be droplets than can form and then freeze bursting the coil and requires replacement of the complete Aqua hot. I follow the same procedure on all RV demand water heaters like yours. Demand Water heaters have small coil type heat exchangers and these are how you get fast heat transfer for continuous on demand hot water. So, blow out and then install RV antifreeze thru the Water Heater. If you cannot blow out just drain and then run RV antifreeze thru the Water and Hot water system. Better safe than sorry. Doug
When it’s time to store a motor home for the winter
months or when freezing temperatures are expected, it’s
crucial to properly winterize the Aqua-Hot to avoid serious
damage, requiring a complete system replacement not covered under the Aqua-Hot Limited Warranty Statement. The
process of winterization consists of completely draining the
domestic water from the system and pumping RV winterization antifreeze through to flush out the system.
This is ONLY thru the fresh water system, not the furnace system. I blow out the Aquahot and complete RV system then run RV antifreeze thru the Aqua Hot. Aqua Hot is adamant, that the small 1/8 inch coiled copper tubes in the heat exchanger fluid, even blowing out there will still be droplets than can form and then freeze bursting the coil and requires replacement of the complete Aqua hot. I follow the same procedure on all RV demand water heaters like yours. Demand Water heaters have small coil type heat exchangers and these are how you get fast heat transfer for continuous on demand hot water. So, blow out and then install RV antifreeze thru the Water Heater. If you cannot blow out just drain and then run RV antifreeze thru the Water and Hot water system. Better safe than sorry. Doug
