Ford H2O Heater
 

Hello, please help with Heater info.
This is in our 39’ Deluxe. What year is it ?
It has been wired to 12V. Fan works good in both directions.
Does it matter which heater hose gets hooked up as far as circulation ?
One hose comes off pass side lower radiator hose.
Other off intake manifold.
T/Y. Stretch

Re: Ford H2O Heater
 

The fitting on the cylinder head should supply the heater and should be attached to the lower connection on the heater core. This is to prevent air being entrapped in the core. The coolant return from the heater is plumbed from the upper connection on the heater to the lower radiator hose.

Re: Ford H2O Heater
 

Attachment 500731

Attachment 500732

Attachment 500733

Attachment 500734

Re: Ford H2O Heater
 

Zeke, that is the way previous owners had it plumbed.
T/Y

Re: Ford H2O Heater
 

What is an H 20 hearer? LOL

Re: Ford H2O Heater
 

Attachment 500737.
I am going to Bed

Re: Ford H2O Heater
 

QUOTE : It has been wired to 12V. Fan works good in both directions.




Just a note to say, The fan will only blow air correctly in only ONE of the two directions. ;)





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Re: Ford H2O Heater
 

That's a '41 - '48 heater, here are the installation instructions for you.

Re: Ford H2O Heater
 

That is a later heater, probably 42-48. A 39 heater looks VERY much like a 40 except for the color and the shape of the 2 handles and possibly the "toe guard" at the bottom.

Re: Ford H2O Heater
 

It's a 42-48 heater. As long as one hose is hooked to the head and the other goes to the lower hose as described the heater doesn't care which line goes where on it. Reversing the fan motor forces air through the defrost ducts as I'm sure you know but apparently some commenters don't.

Re: Ford H2O Heater
 

Meric, thanks for posting info.
Stud , yes it spins / blows good in both directions.
We kind of knew it was not 39’ Heater, because the bottom door can never be open and be able to shift the trans.
Stretch

Re: Ford H2O Heater
 

1st test drive with Heater plumbed up & 12V .
Should of wrapped a couple of 🌭’s in foil, and put on top of heater box.
Stretch

Re: Ford H2O Heater
 

I've sometimes been an H2O hearer after swimming.

Re: Ford H2O Heater
 

I think some (most) of us have way too much time on our hands…

Re: Ford H2O Heater
 

When I was young anything with a heater was a plus in the winter. I at one time cut apart an under-dash AC unit and ran coolant through it. talk about roasting chestnuts on an open fire. S!it howdy them flatheads will make some btu's with Tstats. Sorry probably went too far.