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Figure 2. Typical SIngle Zone Piping
Figure 3. Typical Multi-Zone Using 2-Way Valves
Figure 4. Typical Multi-Zone Using 3-Way Valves
NOTES:
1.
Optional blocking gate valve and hose end valve used (with drain valve) for fast fill and purge of system.
IMPORTANT: Close bypass line valve (if used) during purging.
2.
Circulator should not be installed at lowest point of piping.
3.
There should be no elbows, tees, or change of pipe size for at least 5 diameters of pipe size (see Table 2) upstream and downstream of flow switch.
Flow switch should always be mounted in the horizontal position. See Table 2.
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EH-M3-40 Boiler Operation and Installation Instructions
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