Howdy,
While i was working on my glow plugs (previous post), i had planned to reconnect my water heater to the engine with the 5/8" inch that was present. I have not had it correct for some time and a one point in the past i removed all of the metal rube Goldberg contraption and directly connect the line between the heat exchanger and the fresh water system. I did not remove that line and connect the water heater hose cuz it appeared that the fittings and hose between the heat exchanger and the fresh water was larger than 5/8". i reviewed the articles in the technical section but may have missed it but is there some type of adapter that is needed to convert the line so that it will fit or am i just seeing things that aren't there?
regards
Mike Hogan
s/v Ciscocat #226
Mark I XP25, std rig
This may help: [url]http://c34.org/bbs/index.php/topic,3769.0.html[/url]
The C36s came with some kind of bypass that the multiple "Tom Ss" and I have been discussing for years.:)
Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)
howdy,
based on the diagram the tom soko pointed to in the m25 manual it appears that the connection to and from the heater should be between heat exchanger fresh water connection and the fresh water cooling system. the problem is that hose is 1 1/8" ID and the lines going to the water heater is 5/8" inch. I haven't found anyplace that has a connection that allows for that type of step up/down. I reviewed the response that Stu mentioned but it sounds like the set up is some what different than what is on the older 36s. Has anyone else attempted this, if so do you recall what you did?
regards,
Mike Hogan
s/v Ciscocat #226
Mark I XP25, std rig
[QUOTE=ciscocat;4166]...I reviewed the response that Stu mentioned but it sounds like the set up is some what different than what is on the older 36s. Has anyone else attempted this, if so do you recall what you did?
regards,[/QUOTE]
If it's the M25 series engines, it's the same thing.
Our connection is from above the freshwater circulating pump to the bottom of the thermostat housing. The connections should be on the M25 engine diagrams in the manuals section of your or our websites.
All you're describing is a different point of connection to the freshwater system. Think about it - the loop the freshwater pump makes in the engine and hoses to the HX and the hot water heater: with different size hoses.
Our take offs are 3/8" with that to 5/8" for the run to the hot water heater. That's a much easier transition to make than the larger 7/8" hoses from the freshwater to the HX. And further away, too.
I'll find somewhere on our C34 site to post some pictures and point it out to you in the next few days. I'll link you over there from here.
Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)
C34 Hot Water Heater hose connections. Thermostat housing base and freshwater pump top outlet, see black 3/8" hoses going off the left to 5/8" hoses that go down - they go to the heater.
Forget going to the hoses to the HX, you don't need to do that.
My alternator was oily because the breather hose developed a leak from chafe, blowing oily soot all over. It's cleaner now, with a new hose. And a new alternator, too! :cool:
Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)
Stu,
your suggested solution makes more sense but I was referring to a diagram in the M25 owner's manual on page 38 that shows a hand drawn connection between the heater exchanger, the water heaters and a return to the fresh water system. I saw the set up you mentioned but it appeared to be for a M15. Anyway i'll give your suggestion a try. I didn't like the idea of reducing the circulation by that much.
regards
Mike Hogan
s/v Ciscocat #226
Mark I XP25, std rig
Hi Mike:
The plumbing for the water heater located under your galley counter should follow the attached diagram. The only difference between this diagram and reality is the fittings on the engine fresh water pump (not the raw water pump!) and the thermostat housing are 1/2" not 5/8" so you will need an adapter to go from 1/2" hose off of your fresh water pump to the 5/8" lines on your water heater. Hope this helps.
Tom & Janis Grover
C36 #0949
SR/WK, M25XP
Midland, ON
[QUOTE=ciscocat;4170]...but I was referring to a diagram in the M25 owner's manual on page 38 that shows a hand drawn connection between the heater exchanger, the water heaters and a return to the fresh water system. ... I didn't like the idea of reducing the circulation by that much. [/QUOTE]
Mike, but think about it: it's tapping into the SAME loop at a different place. I wouldn't trust hand drawn sketches on a diagram like that. Hand drawn sketches are great for drafts of wiring diagrams! :)
No circulation changes either connection place: it's the same water being recirculated in a closed loop (just a tad more water to fill up the manifold once you connect the heater - longer piping higher volume inside).
Tom, on my M25 the fittings appear to be 3/8" not 1/2" that connect to the 5/8" to the heater. Mike, you should check before you leap. In any event you'll need an adapter.
Stu Jackson, C34IA Secretary, C34 #224, 1986, SR/FK, M25 engine, Rocna 10 (22#)
Stu, you may be right about the 3/8". I was going from memory, which ain't what it used to be (if I remember correctly! :confused:). In any even, the best plan is to measure before you buy.
Tom & Janis Grover
C36 #0949
SR/WK, M25XP
Midland, ON