HWM-407CH-IOM (09/13)
Page 10
4. The Primary Circuit
A. Plumbing
The primary circuit in a typical HWM installation is shown in Figure 5.
Figure 5. Primary Circuit for EarthLinked
®
System with HWM
The Hydronic Water Module primary circuit water solution plumbing must be installed
consistent with local codes and industry practice. At a minimum, the HWM should have the
fittings as shown in Figure 6. The minimal fittings shown in Figure 6 will facilitate maintaining
and servicing the Hydronic Water Module. Additional fittings may be required to satisfy local
codes and other hydronic system requirements.
