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ENVISION SERIES INSTALLATION MANUAL
Solenoid Wiring
Water control valves draw their power directly from a unit’s 24V transformer and can overload and possibly burn out the
transformer. Check total VA draw of the water valve and ensure that it is under 15 VA.
Water Quality
In ground water situations where scaling could be heavy or where biological growth such as iron bacteria will be pres-
ent, a closed loop system is recommended. The heat exchanger coils in ground water systems may, over a period of time,
lose heat exchange capabilities due to a buildup of mineral deposits inside. These can be cleaned, but only by a qualied
service mechanic, as special solutions and pumping equipment are required. Desuperheater coils can likewise become
scaled and possibly plugged. In areas with extremely hard water, the owner should be informed that the heat exchanger
may require occasional ushing.
Open Loop - Well Water Systems (continued)