How to connect raritan 12 gal water heater to Perkins engine coolant

[edwmama]

Hello
I have a cal cruising 46 built in 1968. This gem has a Perkins
4.236 and equipped with a 12 gallon raritan water heater
Which is connectible to an Engine coolant

Does anyone out there have experience in plumming the Perkins
Coolant to this water heater?

The ports for the coolant are nearly
ImPossible to access

What is the best way to do this?

Is it possible with this older 1968 Perkins 4.236
Is this advisable?

My boat is kept at marina del rey CA

Thanks in advance
Edwin

[Blue Stocking]

What is the access problem?

[GordMay]

I didn't find any specific information in the manuals; but here they are:

Perkins 4.236 Series Workshop Manual ➥ http://igor.chudov.com/manuals/Perki...hop-Manual.pdf

Handbook ➥ http://igor.chudov.com/manuals/Perki...ors-Manual.pdf

or ➥ http://www.cheoyleeassociation.com/R...20Handbook.pdf