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#1
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perkins water flow direction
I finally got around to installing a new hot water heater. The heat
exchanger connections on the water heater are labeled in/out. On the perkins 4-108 there is a riser on the head water jacket and a connection on the exhaust water jacket. Which one is "out" of the 4-108 that goes to the "in" on the hot water heater? The hoses were removed sometime ago so I don't have that as a guide. krj |
#2
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krj wrote in
: Which one is "out" of the 4-108 that goes to the "in" on the hot water heater? I think out on the 4-108 is the one on the head. It's been a while. Why not just hook 'em up to the water heater and start the Perkins. Which ever one gets hot FIRST is the out of the engine to hook to the in on the tank. You can always just swap the hoses on the tank if you got it backwards. -- Larry |
#3
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I believe the one out of the head is the "out" as well. I did this two
years ago. A word of warning; my heat exchanger was pre-plumbed with barbs for a smaller diameter hose than the perkins coolant hose. I believe the lower flow rate may have adverse effects in cooling the engine. My boat was intalled with a by-pass and a cock, which I can fully open to allow full water flow through the water heater system. When the cock is closed (all coolant is diverted through the water heater), the engine keeps a higher temperature. Usually, I keep it "cracked" or open. Of course, remember that you will have to bleed the coolant system every time you play with those hoses if your water heater is installed higher than the engine. mickey |
#4
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I believe the one out of the head is the "out" as well. I did this two
years ago. A word of warning; my heat exchanger was pre-plumbed with barbs for a smaller diameter hose than the perkins coolant hose. I believe the lower flow rate may have adverse effects in cooling the engine. My boat was intalled with a by-pass and a cock, which I can fully open to allow full water flow through the water heater system. When the cock is closed (all coolant is diverted through the water heater), the engine keeps a higher temperature. Usually, I keep it "cracked" or open. Of course, remember that you will have to bleed the coolant system every time you play with those hoses if your water heater is installed higher than the engine. mickey |
#5
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mickey wrote:
I believe the one out of the head is the "out" as well. I did this two years ago. A word of warning; my heat exchanger was pre-plumbed with barbs for a smaller diameter hose than the perkins coolant hose. I believe the lower flow rate may have adverse effects in cooling the engine. My boat was intalled with a by-pass and a cock, which I can fully open to allow full water flow through the water heater system. When the cock is closed (all coolant is diverted through the water heater), the engine keeps a higher temperature. Usually, I keep it "cracked" or open. Of course, remember that you will have to bleed the coolant system every time you play with those hoses if your water heater is installed higher than the engine. mickey Thanks to Larry and Mickey for the info krj |
#6
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krj wrote in
: Thanks to Larry and Mickey for the info krj Now, where you gonna put the 200 gallon water tank so we can all take hot showers offshore?.....(c; One of Lionheart's finest features is the huge 200 gallon water tank in the keel. Oh, those showers feel SO good, either in the head or in the cockpit with the hand sprayer....after a hot day sailing in the SC sun. It's 96 this afternoon in Charleston....whew! -- Larry |
#7
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Well, I have a 112 gal tank under the cabin sole and an 80 gal under the
"V" berth. So I guess we will have to take a couple fewer showere than on Lionheart. krj Larry wrote: krj wrote in : Thanks to Larry and Mickey for the info krj Now, where you gonna put the 200 gallon water tank so we can all take hot showers offshore?.....(c; One of Lionheart's finest features is the huge 200 gallon water tank in the keel. Oh, those showers feel SO good, either in the head or in the cockpit with the hand sprayer....after a hot day sailing in the SC sun. It's 96 this afternoon in Charleston....whew! |
#8
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krj wrote in
: Well, I have a 112 gal tank under the cabin sole and an 80 gal under the "V" berth. So I guess we will have to take a couple fewer showere than on Lionheart. krj Excellent! So many boats have those tiny tanks you're afraid to wash your hands. Good luck with your new hot water system. -- Larry |
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