— Page 35 —
© 2008 Aqua-Hot
®
600-D Hydronic Heating System Installation Manual
section 10: Purging the system
Purging the Hydronic Heating System:
In order to provide the best freeze protection, boil-over
protection, and anti-corrosion and rust protection, a
50/50 mixture of “GRAS” approved propylene glycol
antifreeze and water is recommended.
Reference Appendices D through F for additional
information regarding the antifreeze and water heating
solution. Be sure to use a “GRAS” boiler-type pro-
pylene glycol based antifreeze rather than an RV and
Marine antifreeze or an automotive antifreeze/coolant.
If assistance is needed in selecting an appropriate
50/50 antifreeze and water mixture, please contact
the Aqua-Hot Heating Systems Product Application
Department at 1-800-685-4298.
1.
Open the Aqua-Hot’s drain valve located at the front
of the heater. Reference Figure 46.
2.
Connect a piece of ½ inch PEX tubing (this piece
should be long enough to be used to transport the
antifreeze and water heating solution from its source to
the Aqua-Hot) to the drain valve.
o
nly
propylene
glycol
based
“
boIler
”
type
antIfreeze
deemed
“gras” (g
enerally
r
ecognIzed
as
s
afe
)
by
the
fda
shall
be
used
In
the
a
qua
-h
ot
’
s
hydronIc
heatIng
system
. f
aIlure
to
use
the
above
specIfIed
antIfreeze
type
could
result
In
serIous
Injury
or
death
.
Ensure that the overflow tube is connected from the Aqua-Hot’s
expansion tank connection to the expansion tank’s bottom con-
nection and from the expansion tank’s top connection through
the overflow tube hole in the motorhome’s bay floor prior to
beginning this antifreeze and water heating solution fill proce
-
dure. Failure to do so could result in an antifreeze spill in the
motorhome’s bay. Reference Figure 11.
Figure 47
Figure 46
Drain valve
Expansion tank connection
air-Release Valve
Summary of Contents for 600-D
Page 1: ...2008 Aqua Hot Heating Systems Inc Installation Manual...
Page 43: ...Appendix B Appendix B Wire Gauge Information...
Page 45: ...Appendix C Appendix C Electronic Controller Features...
Page 48: ...Appendix D Appendix D Antifreeze Types...
Page 50: ...Appendix E Appendix E Antifreeze Mixture Water Quality Recommendations...
Page 52: ...Appendix F Appendix F Antifreeze Terms and Mixture Ratio...
