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Connecting Controllers to AquaCal Heat Pumps

INTRODUCTION...

To support direct connection of external controllers, the majority of AquaCal heaters are equipped with

a controller options terminal block. External controller connection instructions, for heaters

with options

terminal blocks, follow within this booklet. A smaller group of AquaCal heaters—while not equipped with

an options terminal block—can, through alternate means, be connected to external controllers. For

guidance in connecting controllers to heaters not equipped with an options terminal block, or for any

other controller related connection questions, please contact the AquaCal Technical Support Group at:

727-823-5642.

ELECTRONICALLY CONTROLLED (Analog) HEATERS: The options terminal block is located on the

low-voltage side of the heater’s electrical controls enclosure. The terminal block is labeled: “CON-

TROLLER OPTIONS.” Individual terminal positions are designated by the letters “A” through “E”

(See Figure-1).

MICROPROCESSOR CONTROLLED (Digital) HEATERS: For heaters equipped with an HP7R or

HP7 microprocessor, the options terminal block is located on the low-voltage side of the electrical

enclosure, on the microprocessor printed circuit (PC) board; option terminals are labeled: “X-Y-Z.” Use

the “Y-Z” terminals to connect a 2-wire controller. To connect a 3-wire controller, use the terminal strip

“FS-2” points (See Figure-1A); do NOT use the “X-Y-Z” terminals for connecting a 3-wire controller.

Connection details, and microprocessor programming instructions, follow later in this booklet.

FIGURE-1

FIGURE-1A

A-B-C-D-E

X-Y-Z

FS-2

DIGITAL CONTROL

ANALOG CONTROL

1 2 3 4 5 6 7 8

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Compool Cp3800 Manual de Instruções Página 3