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11-23-2022, 10:10 AM
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#1
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Junior Member
Brand: Still Looking
State: Kentucky
Posts: 22
THOR #17427
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Blowing out water lines for storage
I'm getting ready to blow the water lines for winter storage. Can't remember, do I open all the faucets and the low point drain lines? Or close the faucets and open the low point lines?
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11-23-2022, 11:32 AM
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#2
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Junior Member
Brand: Thor Motor Coach
Model: Palazzo
State: Connecticut
Posts: 11
THOR #27397
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Open everything and drain the system first. Close everything, apply air, and open every faucet or drain opening one at a time. Go back and do it again until you don’t get any water out.
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11-23-2022, 02:39 PM
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#3
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Junior Member
Brand: Thor Motor Coach
Model: Chateau 22E
State: Michigan
Posts: 24
THOR #28483
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Quote:
Originally Posted by MikeCh
Open everything and drain the system first. Close everything, apply air, and open every faucet or drain opening one at a time. Go back and do it again until you don’t get any water out.
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After seeing the prices on antifreeze , I may go to this system, then add antifreeze :-) What PSI do you use for blowing out the lines?
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11-23-2022, 02:47 PM
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#4
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Site Team
Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,781
THOR #1469
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Quote:
Originally Posted by NurseNellie
After seeing the prices on antifreeze , I may go to this system, then add antifreeze :-) What PSI do you use for blowing out the lines?
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Same as water pressure. Don’t forget ice maker and black tank flush.
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11-23-2022, 03:17 PM
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#5
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Senior Member
Brand: Redwood
Model: 36FB
State: Arizona
Posts: 1,766
THOR #3610
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Quote:
Originally Posted by NurseNellie
After seeing the prices on antifreeze , I may go to this system, then add antifreeze :-) What PSI do you use for blowing out the lines?
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I used 40-45 psi. Start blowing the faucet furthest away & work your way back.
When finished blowing them out I opened the low point drains & left them & all the faucets open. Then poured about a quart of anti freeze in the toilet bowl & the rest of a gallon down all drains.
As mentioned don't forget the ice maker & washing machine lines if equipped.
Back 40+ years ago with 1st rv I made the mistake of pouring the antifreeze into the FW tank, never done that again. The problem is you'll only retrieve maybe 1/2 of what you poured in depending where the suction pickup is in the tank. Secondly there will always be a couple gallons or more of water left in the tank regardless of how long you let it drain therefore whatever AF you pour in is going to be diluted possibly to the point of being useless. Then getting it out of the FW tank, it requires lots of rinsing to get it out without leaving a taste, no it won't hurt you, but it doesn't taste very good & it works a bit like the juice you drink before a colonoscopy.
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Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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11-23-2022, 03:18 PM
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#6
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Junior Member
Brand: Thor Motor Coach
Model: Palazzo
State: Connecticut
Posts: 11
THOR #27397
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Quote:
Originally Posted by NurseNellie
After seeing the prices on antifreeze , I may go to this system, then add antifreeze :-) What PSI do you use for blowing out the lines?
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I use 45 PSI.
Don't forget washing machine, hot water relief valve, and fresh water pump. I use a wet and dry vac on the fresh water pump and lines.
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11-23-2022, 08:44 PM
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#7
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 23U
State: Nevada
Posts: 250
THOR #27334
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Quote:
Originally Posted by MikeCh
I use 45 PSI.
Don't forget washing machine, hot water relief valve, and fresh water pump. I use a wet and dry vac on the fresh water pump and lines.
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Also don't forget outdoor shower.
I use antifreeze in drain traps, it only takes a little to make sure they don't freeze up. Gallon lasts years.
I also find winter is a good time to put some toilet seal conditioner in the bowl,
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2020 Four Winds 23U.. ex rental unit
2014 Jeep Wrangler 2dr Manual Trans toad
2019 Beta 500-RRS, for when the going gets nasty
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11-23-2022, 09:15 PM
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#8
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Junior Member
Brand: Thor Motor Coach
Model: Chateau 22E
State: Michigan
Posts: 24
THOR #28483
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Quote:
Originally Posted by MikeCh
I use 45 PSI.
Don't forget washing machine, hot water relief valve, and fresh water pump. I use a wet and dry vac on the fresh water pump and lines.
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Thanks, Mike and others! I have an AF pickup line on my pump which I still intend to use, but will blow most of the water out first. (And my little 22E isn't blessed with an ice maker or washing machine...LOL!)
Of course my usual means of winterizing is driving hard towards Florida and getting someplace for the first night where it stays above freezing
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11-23-2022, 11:00 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: Forest River Forester 235
State: Indiana
Posts: 4,884
THOR #6826
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If you use a compressor with a tank please use a filter. Tanks are rusty nasty and gross inside!
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11-23-2022, 11:44 PM
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#10
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Site Team
Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,781
THOR #1469
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Quote:
Originally Posted by Pete'sMH
If you use a compressor with a tank please use a filter. Tanks are rusty nasty and gross inside!
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If it’s been neglected and not drained daily.
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11-30-2022, 09:15 PM
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#11
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Junior Member
Brand: Thor Motor Coach
Model: 31' Chateau
State: Oregon
Posts: 15
THOR #24859
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We used to blow out the lines but found that it's easier when leaving from our last trip for the winter, open the low point, drain the fresh water. Open all the faucets and the trip home will jiggle out the water. Just pour the antifreeze into the drains.
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12-01-2022, 12:07 PM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 23U
State: Nevada
Posts: 250
THOR #27334
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Quote:
Originally Posted by RJHolcomb
We used to blow out the lines but found that it's easier when leaving from our last trip for the winter, open the low point, drain the fresh water. Open all the faucets and the trip home will jiggle out the water. Just pour the antifreeze into the drains.
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That's an interesting idea, a bit of a bummer if you need to use the privy though.. perhaps keep a couple gallons of water in jugs just in case?
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2020 Four Winds 23U.. ex rental unit
2014 Jeep Wrangler 2dr Manual Trans toad
2019 Beta 500-RRS, for when the going gets nasty
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12-01-2022, 02:46 PM
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#13
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Senior Member
Brand: Thor Motor Coach
Model: 2022 Axis 24.1
State: Kansas
Posts: 823
THOR #24565
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Will just blowing out the lines with air clear the water pump of water?
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12-01-2022, 03:00 PM
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#14
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,393
THOR #7035
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Quote:
Originally Posted by happy
Will just blowing out the lines with air clear the water pump of water?
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No, the air is applied to the discharge side so no flow back through the pump and no displacement of water on the suction side lines.
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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12-01-2022, 06:19 PM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: 2022 Axis 24.1
State: Kansas
Posts: 823
THOR #24565
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Thanks.
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01-17-2023, 02:25 AM
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#16
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Junior Member
Brand: Thor Motor Coach
Model: 22 FEF
State: New Jersey
Posts: 14
THOR #28862
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Quote:
Originally Posted by NurseNellie
Thanks, Mike and others! I have an AF pickup line on my pump which I still intend to use, but will blow most of the water out first. (And my little 22E isn't blessed with an ice maker or washing machine...LOL!)
Of course my usual means of winterizing is driving hard towards Florida and getting someplace for the first night where it stays above freezing
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I like your method of winterizing... Drive south...
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01-23-2023, 04:01 AM
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#17
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Senior Member
Brand: Thor Motor Coach
Model: 2016 Thor Outlaw 29H
State: Tennessee
Posts: 668
THOR #13869
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Quote:
Originally Posted by NurseNellie
After seeing the prices on antifreeze , I may go to this system, then add antifreeze :-) What PSI do you use for blowing out the lines?
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The price of 2 gallons RV/Marine antifreeze vs blowing apart any of the lines?
You do what makes you feel most comfortable about.
For the record, the air would need to be regulated to not blow apart any fittings, and I would open closest faucet in line first as I progress through the entire system.
For me, 2 gallons and using the water pump and service line provided is easiest.
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.....
Rusty
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01-24-2023, 08:28 PM
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#18
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Senior Member
Brand: Thor Motor Coach
Model: Forest River Forester 235
State: Indiana
Posts: 4,884
THOR #6826
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Quote:
Originally Posted by 10scDust
The price of 2 gallons RV/Marine antifreeze vs blowing apart any of the lines?
You do what makes you feel most comfortable about.
For the record, the air would need to be regulated to not blow apart any fittings, and I would open closest faucet in line first as I progress through the entire system.
For me, 2 gallons and using the water pump and service line provided is easiest.
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Me too. Blowing out doesn’t always get water out of the pump. Most times it’s ok because enough drains out of it when you drain the lines but not always. I don’t drain the lines as sometimes the pump will lose its prime and be a bit of a hassle getting it to suck up the antifreeze. Just start from a normal state and pump a couple of gallons. Easy peasy. 15-20 minutes and under $10.
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01-24-2023, 10:57 PM
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#19
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Site Team
Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,781
THOR #1469
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Quote:
Originally Posted by 10scDust
The price of 2 gallons RV/Marine antifreeze vs blowing apart any of the lines?
You do what makes you feel most comfortable about.
For the record, the air would need to be regulated to not blow apart any fittings, and I would open closest faucet in line first as I progress through the entire system.
For me, 2 gallons and using the water pump and service line provided is easiest.
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Most decent air compressors have a regulator and most folks that have an air compressor are smart enough to know how to regulate the pressure.
I always blow the system out even if I am going to use antifreeze.
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01-25-2023, 01:15 AM
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#20
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Senior Member
Brand: Still Looking
Model: Sunstar 29VE Winnebago
State: Texas
Posts: 5,651
THOR #13058
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Quote:
Originally Posted by EA37TS
Most decent air compressors have a regulator and most folks that have an air compressor are smart enough to know how to regulate the pressure.
I always blow the system out even if I am going to use antifreeze.
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Magic words right there. I have always had mental block that if drain lines and blow for added protection, why on earth do you need the antifreeze but if antifreeze is used after proper blowout, you do have a 3rd level of protection.
Since I winterize / dewinterize on average 4 times per year, I have no time to waste with antifreeze and the subsequent sanitizing required afterwards. Never thought about the cost factor; so I may be saving $40/year by NOT using antifreeze.
FWIW, I do pour antifreeze in P traps
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2019 Sunstar 29ve; Toad Lincoln Navigator; RVi Brake 3 & Command Center; Roadmaster Nighthawk Tow bar & Baseplate; Sumo Springs; Safe T Plus; Onan EC-30 AGS; Vmax 250ah AGM; T-Mobile Internet; H/W Heater / Chassis Disconnect Switches; Southwire Surge Guard 44270 & 34951 w/Monitor 40301; Jet Flo Macerator; Alpine SPE500 Speakers; Visio M21D-H8R
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