© 2011 Aqua-Hot
®
375-LP Installation Manual
SECTION 3: HYDRONIC HEATING SYSTEM
Plumbing Requirements:
Once all heat exchangers have been mounted, for-
mulate 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 Figure 26.
The fresh water tank, bedroom, and bathroom heat
exchangers (typically 3) must be plumbed together
in-series on “Heating Loop 2.” Reference Figure
26.
Use 5/8 inch I.D. (Inside Diameter) plumbing lines
for both heating loops.
Use wide-sweeping elbows or “bend supports”
whenever the plumbing lines may be susceptible to
kinking (i.e., 90° bends).
Figure 26
— Page 22 —
Heating Zone #2
Heating Zone #1
Heating Zone #3
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