Plumbing Requirements - Aqua-Hot 450-DE Installation Manual

Plumbing Requirements:

Once all heat exchangers have been mounted, formu-
late a plan for the routing of the plumbing lines from
each heating zone to the Aqua-Hot.
All plumbing lines should be laid as flat as possible,
and any extreme rises in height should be avoided to
eliminate any potential air-traps.
The kitchen and living room heat exchangers (typically
three) must be plumbed together in-series on "Heating
Loop 1." Reference Figures 23 and 24.
Heating Zone #3
Outgoing Plumbing Lines
Section 2: Hydronic Heating System
Heating Zone #1
Heating Zone #2
© 2008 Aqua-Hot ® 450-DE/DM Hydronic Heating System Installation Manual
The fresh water tank, bedroom, and bathroom heat
exchangers (typically 3) must be plumbed together in-
series on "Heating Loop 2." Reference Figures 23 and
24.
Use ⅝ inch I.D. (Inside Diameter) plumbing lines for
both heating loops.
Use wide-sweeping elbows or "bend supports" when-
ever the plumbing lines may be susceptible to kinking
(i.e., 90° bends).
Heating Loop #1
Heating Loop #2
Heating Zone #4
Incoming Plumbing Lines
Figure 23
— Page 14 —