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04-07-2021, 01:57 PM
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#1
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Senior Member
Join Date: Nov 2014
Posts: 2,515
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Replaced summer loop and it’s running?
Ok replaced summer loop pump.....
I was wondering how I would test it. We are still winterized so no water in use.
However when I powered things back no fuse blown....good but the pump started up. How do you shutdown the summer loop when not needed?
I leave the heating loops on low over the winter when I winterized.
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2019 Dutchstar 4369 Spartan. Full wall failure survivor.
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04-07-2021, 02:43 PM
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#2
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Aug 2015
Location: Northwest Washington State or Western Montana, depending on the season.
Posts: 3,473
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If you have "the heating loops on low," then the pump is doing its job. It circulates the heat transfer fluid through the heat exchangers that provide coach interior heat, along with providing hot water.
Since your system has been down for a while, it will take some time for the heat transfer fluid to come up to normal temperature. The pump will run during that time, and anytime the interior temp of the coach drops below the thermostat set point.
Sounds like you have solved your problem.
TJ
__________________
Jim (W7DHC), Diane & Mini Schnauzers, Lizzy & Ellie
2018 Mountain Aire 4047
2014 Honda CR-V 2020 Lincoln Nautilus "toad" w/AF1
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04-07-2021, 02:53 PM
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#3
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,122
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Glad you got it fixed.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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04-07-2021, 03:06 PM
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#4
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Senior Member
Join Date: Nov 2007
Location: Charleston, WV
Posts: 3,469
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The summer loop heats the hot water. It will run until the water is up to temperature. It does not circulate fluid through the coach interior.
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John and Mary Knight
2015 Newmar Ventana 4311 - wheelchair accessible
2015 Cadillac SRX Luxury AWD
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04-07-2021, 03:34 PM
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#5
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"Formerly Diplomat Don"
Newmar Owners Club
Join Date: Apr 2005
Location: Moorpark, Ca.
Posts: 24,122
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I know there has been some discussion in the past about how the system should be left when not in use. There was some blame being placed on the system design that said the summer loop pump may run, when there was no demand for heat.
Knock on wood.....but for seven years, (5 years with a 2014 DS and 2 years with 2019 DS), I've never had a pump failure. My routine.....I turn the system on at the Oasis unit, the day we leave on a trip. When we arrive at the campground, I put out the slides and turn on which ever heating element I think I need for the weather. When we depart to move to another campground, I bring in the slides and turn off the electric element(s) and or the diesel burner. The next campground, I repeat the same procedure. On the last day of the trip, I turn the outside unit off before we break camp or when we get home and park the coach.
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Don & Mary
2019 Newmar Dutch Star 4018 (Freightliner)
2019 Ford Raptor
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04-07-2021, 04:36 PM
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#6
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Senior Member
Alpine Owners Club Newmar Owners Club
Join Date: Oct 2005
Location: Fremont, Ca
Posts: 1,327
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Quote:
Originally Posted by Dutch Star Don
I know there has been some discussion in the past about how the system should be left when not in use. There was some blame being placed on the system design that said the summer loop pump may run, when there was no demand for heat.
Knock on wood.....but for seven years, (5 years with a 2014 DS and 2 years with 2019 DS), I've never had a pump failure. My routine.....I turn the system on at the Oasis unit, the day we leave on a trip. When we arrive at the campground, I put out the slides and turn on which ever heating element I think I need for the weather. When we depart to move to another campground, I bring in the slides and turn off the electric element(s) and or the diesel burner. The next campground, I repeat the same procedure. On the last day of the trip, I turn the outside unit off before we break camp or when we get home and park the coach.
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I do a very similar procedure. Unfortunately, I had one of the “known” defective pumps in the summer loop and replaced it with the new model pump.The two pumps in the coach heating circuit are working ok but they are very seldom used as we have heated floors and a fireplace which, when working together, have kept us cozy in very low temperatures.
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Jerry & Judy, Fremont, California
2017 Dutch Star 4018
Freightliner, HWH Active Air
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04-07-2021, 04:45 PM
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#7
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Aug 2015
Location: Northwest Washington State or Western Montana, depending on the season.
Posts: 3,473
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Quote:
Originally Posted by Algoma
The summer loop heats the hot water. It will run until the water is up to temperature. It does not circulate fluid through the coach interior.
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Yes, I believe you are correct. I meant to indicate that it would take a while for the water to come up to temp, but my fingers outran my brain.
TJ
__________________
Jim (W7DHC), Diane & Mini Schnauzers, Lizzy & Ellie
2018 Mountain Aire 4047
2014 Honda CR-V 2020 Lincoln Nautilus "toad" w/AF1
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04-08-2021, 04:50 AM
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#8
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Senior Member
Join Date: Nov 2014
Posts: 2,515
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I was concerned for cold weather storage operation with the loops heating the coach but no need for heating water. Would the summer loop come on during the colder months?
Will discuss with the vendor. How to leave heat on inside with no risk of the summer loop coming on.
__________________
2019 Dutchstar 4369 Spartan. Full wall failure survivor.
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04-08-2021, 06:58 AM
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#9
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Senior Member
Join Date: Oct 2014
Posts: 1,121
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Quote:
Originally Posted by Dutch Star Don
I know there has been some discussion in the past about how the system should be left when not in use. There was some blame being placed on the system design that said the summer loop pump may run, when there was no demand for heat.
Knock on wood.....but for seven years, (5 years with a 2014 DS and 2 years with 2019 DS), I've never had a pump failure. My routine.....I turn the system on at the Oasis unit, the day we leave on a trip. When we arrive at the campground, I put out the slides and turn on which ever heating element I think I need for the weather. When we depart to move to another campground, I bring in the slides and turn off the electric element(s) and or the diesel burner. The next campground, I repeat the same procedure. On the last day of the trip, I turn the outside unit off before we break camp or when we get home and park the coach.
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Don - What do you mean when you say "on at the Oasis unit..." Does this mean something different from the switch overhead at the entry? I thought off there also meant off at the unit in its bay.
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Phil and Laura (and Sam too!)
2024 Coachmen Beyond 22RB (on order)
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04-08-2021, 06:52 PM
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#10
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Senior Member
Join Date: Apr 2015
Location: Key Largo Fl./Ft Mill Sc
Posts: 876
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Quote:
Originally Posted by DrPhil
Don - What do you mean when you say "on at the Oasis unit..." Does this mean something different from the switch overhead at the entry? I thought off there also meant off at the unit in its bay.
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I would like to know that answer myself.
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Barry & Martha
2016 Newmar Dutch Star 4018 Freightliner
2018 Harley ultra Limited / 2018 Jeep Wrangler Sport
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04-08-2021, 08:26 PM
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#11
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Senior Member
Alpine Owners Club Newmar Owners Club
Join Date: Oct 2005
Location: Fremont, Ca
Posts: 1,327
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Quote:
Originally Posted by purrin along
I would like to know that answer myself.
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There is an on/of button on the front of the Oasis unit itself. This turns the entire unit off, not just the electric elements and/or the diesel burner.
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Jerry & Judy, Fremont, California
2017 Dutch Star 4018
Freightliner, HWH Active Air
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04-09-2021, 08:07 AM
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#12
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Senior Member
Join Date: Apr 2015
Location: Key Largo Fl./Ft Mill Sc
Posts: 876
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Quote:
Originally Posted by jerry davis
There is an on/of button on the front of the Oasis unit itself. This turns the entire unit off, not just the electric elements and/or the diesel burner.
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Thanks for the explanation.Our coach is new to us,so still learning.
__________________
Barry & Martha
2016 Newmar Dutch Star 4018 Freightliner
2018 Harley ultra Limited / 2018 Jeep Wrangler Sport
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04-12-2021, 09:15 AM
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#13
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Senior Member
Join Date: Apr 2013
Location: Reno, Nevada
Posts: 200
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Summer Loop pump runs whenever boiler is at or above 140 degrees F to make domestic hot water. If you’re using the Oasis to heat Coach, Summer Loop will run. Suppose you could pull fuse for that pump as a work-around. I learned this because my hydrostat controlling summer loop pump went bad and pump was running even with cold boiler.
ITR is super helpful over the phone...
__________________
'15 Newmar DS3736 on Freightliner
‘19 Ford Ranger Lariat Toad
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04-12-2021, 12:15 PM
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#14
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Senior Member
Join Date: Nov 2014
Posts: 2,515
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Quote:
Originally Posted by xbcsutter
Summer Loop pump runs whenever boiler is at or above 140 degrees F to make domestic hot water. If you’re using the Oasis to heat Coach, Summer Loop will run. Suppose you could pull fuse for that pump as a work-around. I learned this because my hydrostat controlling summer loop pump went bad and pump was running even with cold boiler.
ITR is super helpful over the phone...
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Yes I’ve come to the conclusion I will need to pull the fuse. I did get that message from ITR on when hot it recirculates. I would have thought if no water is called for then no summer loop pump.
Thanks for the followup.
__________________
2019 Dutchstar 4369 Spartan. Full wall failure survivor.
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