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Water IN & OUT Connections
For proper operation and maximum efficiency, piping coming from the pump and filter MUST be connected to the
"IN" port of the heater. Likewise, connect piping returning to the pool/spa to the "OUT" port of the heater. See
drawing below.
WARNING!
Failure to heed the following may result in permanent injury
or death.
Installation made by unqualified persons can result in hazards to the installer and others. The information
contained in this Electrical Installation section is intended for use by qualified electrical installation technicians,
familiar with electrical service industry safety standards and methods. Electrical installation to be performed
by qualified individuals only.
Electrical Requirements
General Information:
u When possible, locate the equipment disconnect means within arm's reach of the heater's
electrical enclosure or as close as possible to the heater. Always satisfy applicable codes and
standards.
u All AquaCal heat pumps are designed for copper conductors, only. In sizing power wiring, be
especially aware of up-sizing requirements required due to wiring distances. Always satisfy
applicable codes and standards.
u Multiple heaters installed at same site generally require special sequencing controls (AquaCal part
#ASC-(number of heaters)); if yours is a multi-heater installation, contact AquaCal Technical Support
for assistance (800-786-7751).
u Electrical installation should be by licensed electrician only.
u Connecting External Controllers: See document entitled “Connecting External Controllers to
AquaCal Heat Pumps”. These instructions are shipped inside heater accompanying the electrical
schematic.