Quote:
Originally Posted by groveln
That year Hydro Hot HHE-200-08E uses engine coolant..I have the same unit in my '04 American Eagle & was glad to know this instead of having to come up with another Fluid to have on board to deal with. Also I'm sure you know that boiler fluid is expensive stuff! This Hydro Hot unit has been very good to me in the last 12 years I've had the coach. I do the P.M. on it.
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Cut from service manual for my Hydro hot
It came with Camco boiler fluid..not engine coolant
..which is not safe to ingest
Antifreeze and Water Heating Solution:
As the antifreeze type and mixture ratio is essential to the
Hydro-Hot’s performance and ability to comply with
regulations, the following information is being supplied to
understand various types of antifreeze, the quality of wa-
ter necessary, and the mixture ratio. Hydro-Hot Heating
Systems Inc. recommends CAMCO’s Boiler Antifreeze
-100°.
Antifreeze Types:
The following information addresses the necessary usage of
a propylene glycol based “boiler “ type antifreeze in the Hy-
dro-Hot. Propylene glycol is a safer alternative to the more
toxic ethylene glycol antifreeze; however, as mandated by
IAPMO (International Association of Plumbing and Mechan-
ical Officials), only those propylene glycol based “boiler”
type antifreezes deemed “Generally Recognized as
Safe” (GRAS) by the FDA should be utilized.
Because of the significant impact various types of antifreeze
can have on a Hydronic heating system, including the level
of safety provided, it has been recognized that there is a need
to provide an explanation regarding two additional promi-
nent types of antifreeze/coolant available. The following
information should be utilized as an educational means of
ensuring that the proper type of propylene glycol based anti-
freeze is selected:
RV & Marine Antifreeze:
These types of propylene glycol based antifreeze products
are formulated specifically for “winterizing” applications
only. Although RV & Marine antifreeze is often “Generally
Recognized as Safe” by the FDA, it should never be used in
the Hydro-Hot’s Hydronic Heating System. This type of
antifreeze is not formulated to transfer heat, which is essen-
tial to the heating system’s functionality and does not contain
rust inhibitors. Please note, however, that RV & Marine
antifreeze can be utilized to winterize the Hydro-Hot’s do-
mestic water heating system.
Automotive Antifreeze/Coolant:
These types of propylene glycol based antifreeze products
are formulated specifically to protect automotive engines
against corrosion, freezing temperatures, and overheating.
They also have excellent heat transfer and thermal conduc-
tivity characteristics. Although these types of antifreeze
products are considered less toxic and safer than ethylene
glycol for people, pets, and the environment, they are not
“Generally Recognized as Safe” (GRAS) rated by the FDA.
Therefore, they must be marked with a “harmful if swal-
lowed” warning. This additional warning is required be-
cause these types of antifreeze products contain high levels
of chemical inhibitors. Due to their potentially hazardous
properties, they should never be used in the Hydro-Hot’s
Hydronic Heating System.
An
Cut from service manual
Greg
Linear Mode
