Aqua-Hot™ Hydronic Heating System Installation Manual 07/05
Page 20
Fresh Water
Tank Heat
Exchanger
3.7
Mounting the Fresh Water Tank Heat Exchanger
Once a permanent mounting location for the Fresh Water Tank Heat Exchanger has been
selected, fasten the Heat Exchanger permanently in place. Please reference Section 3.6
and use Figures 8, 10, 11, 12, and 13 for mounting information.
3.8
Plumbing the Heat Exchangers Overview
Once all Heat Exchangers have been mounted, a plan should be formulated for the
routing of the Plumbing Lines from each heating zone to the Aqua-Hot. The Plumbing
Lines are the roadways that carry the antifreeze and water heating solution from the
Aqua-Hot to the Heat Exchangers in each heating zone; reference Figures 2 and 7.
Adhering to the guidelines listed below will ensure maximum heating performance (heat
output):
A. The Kitchen and Living Room Heat Exchangers (typically three)
must
be plumbed
together
in-series
on “Heating Loop #3.” Be sure to reference Figure 2 and the
“Generalized Motorhome Heating System Floorplan” in Section 3.4 for additional
information.
B. The Fresh Water Tank and Bathroom Heat Exchangers (typically two)
must
be
plumbed together
in-series
on “Heating Loop #2.” Be sure to reference Figure 2
and the “Generalized Motorhome Heating System Floorplan” in Section 3.4 for
additional information.
C. The Bedroom Heat Exchanger (typically one) is plumbed solely on “Heating Loop
#1.”
D. Use 5/8 in. I.D. (Inside Diameter) Plumbing Lines for all Heating Zones.
E. Use wide-sweeping elbows or “Bend-Supports” whenever Plumbing Lines may be
susceptible to kinking (i.e., 90° bends).
3.9 Installing the Interior/Fresh Water Tank Plumbing Lines
1. Prior to installing the Plumbing Lines, mark each line with arrows and/or labels at
both ends. This can be done while the lines are being laid out in order to indicate
which Heating Loop the Plumbing Lines pertain to (i.e., Heating Loop 1, Heating
Loop 2, or Heating Loop 3) and whether the Plumbing Line is a
Supply
or a
Return
line; reference Figures 2, 16A, and 16B.
NOTES:
A.
All Plumbing Lines should be laid as flat as possible, and any extreme rises in
height should be avoided.
B.
Run all Plumbing Lines in areas where they cannot be pinched off or damaged
under normal operating conditions.
C.
Be sure to secure all Lines where necessary and apply protective shielding in
areas where chafing may occur.
D.
Vehicle Systems suggests using Rubber Coated/Closed-Type Clamps when
securing the Plumbing Lines.
2. Connect and clamp the
Supply
line from the Heater to the lowest port on each Heat
Exchanger in each heating zone; reference Figures 2 and 14.
Plumbing
the Heat
Exchangers
Overview
Installing
the Interior/
Fresh Water
Tank Plumbing
SECTION 3: INSTALLATION PROCEDURES
