© 2008 Aqua-Hot
®
600-D Hydronic Heating System Installation Manual
— Page 36 —
section 10: Purging the system
3.
Fill the Aqua-Hot completely with the 50/50 mixture
of antifreeze and water heating solution. This will take
approximately 16 gallons of antifreeze and water heat-
ing solution.
4. When refilling, open the air release valve located on
the expansion tank connection to release air pockets.
Reference Figure 46. Hold the valve open until all air
is released. Be sure the valve is closed when finished
by hand-tightening. Look for the solution to enter the
overflow tube attached to the expansion tank connec
-
tion on top of the Aqua-Hot.
5.
Close the drain valve.
Purging the System by Grounding the Zone
Circulation Pumps:
1. Ensure that the boiler tank has been filled with the
appropriate 50/50 mixture of antifreeze and water
heating solution.
2.
Locate the heating zone circulation pumps. Reference
Figures 3 and 48.
3.
Take the circulation pump’s blue (negative) wire and
disconnect it from the connector of the opposing wire.
Reference Appendix A.
4.
Connect an alligator clip to the spade terminal on the
circulation pump’s blue (negative) wire and clip the op-
posite end of the cable to a ground source.
NOTE:
The circulation pump will activate as soon as the pump
is connected to a ground source; therefore, disconnect
the alligator clip from the ground source during the
antifreeze and water heating solution filling procedure.
5.
Allow the circulation pump to operate for approxi-
mately 1-3 minutes in order to purge the corresponding
heating loop, then remove the alligator clip from the
ground source.
6. Open the drain valve and completely fill the Aqua-Hot’s
boiler tank with additional antifreeze and water heating
solution.
7.
Repeat steps 5 and 6 for both heating loops until all
air has been completely bled from the entire heating
system.
NOTE:
All air is bled from the heating system when both
plumbing lines are free of air..
8.
Once the systems have been purged, disconnect the al-
ligator clips from the ground source and the circulation
pump’s wires. Reconnect the pump’s wires as originally
configured. Reference Figure 48.
Zone #1, #2, or #3
Circulation Pump
Blue (negative) wire
Spade Terminal
disconnected from the
opposing wire
Alligator Clip to be
connected to the Blue
Wire’s Spade Terminal
Opposite end of the
Alligator Cable to be
connected to a ground
source
Red (positive) wire
(will not be disconnected
for the purging
procedure)
By
pa
ss
in
g t
he
Th
erm
ostat
by Grounding the
Circ
ula
tio
n P
um
p
Figure 48
Zone 1
Circulation
Pump
Zone 2
Circulation
Pump
Zone 3
Circulation
Pump
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...
