The option in Fig. 4 is usually for a situation where the Tank Tap Adapter cannot
be used due to code, permitting, clearance or sediment issues.
NOTES
Do not return the ACWH unit’s hot water by placing a Tee
in the hot water delivery pipe above the water heater. This
approach will allow water to pass from the ACWH unit directly
into the system which can create bursts of unevenly tempered
water.
Fig. 4 Normal plumbing with Tee (shown with pre-heat tank)
