Connecting Heat Pump To An External Controller - Aquacal HeatWave SuperQuiet SQ120R Installation Manual

2. Switch position of the incoming power wires at each leg as follows, re-connect power, and attempt to restart
the unit. If the unit fails to start, disconnect power. Verify off and proceed to next leg.
Switch incoming power wires at L1 and L2 on the line side to the contactor.
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Switch incoming power wires at L1 and L3 on the line side to the contactor.
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Switch incoming power wires at L2 and L3 on the line side to the contactor.
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3. When heat pump starts, disconnect power and verify off. Then confirm all line voltage connections are
securely tightened. Reconnect power.
If heat pump does not start, contact AquaCal
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3.4.g Connecting Heat Pump to an External Controller
To support a direct connection to an external controller, AquaCal
terminal blocks. These terminals are on the microprocessor located on the low-voltage side of the electrical
enclosure.
WARNING - Failure to heed the following may result in injury or death.
This section is only for qualified installers who are familiar with swimming pool and spa safety standards.
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The installer must be familiar with service industry techniques.
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Deactivate power while routing wiring to control board.
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CAUTION - Failure to heed the following may result in equipment damage.
The wire size connecting the controller must be 16-gauge, 2-conductor or larger, low-voltage wire.
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Use direct connection ( dry contact) provided on the microprocessor for external controllers .
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Please confirm the type of external controller to be installed and follow the
appropriate instructions.
A two-wire controller (with an internal thermostat) . The user can set and
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adjust the temperature at the controller's screen.
A three-wire controller (with an "OFF" position ). The user adjusts the
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temperature at the heat pump. The user can select pool or spa mode or turn
off the heat pump using the controller.
A three-wire controller ( without an "OFF" position ). The user adjusts
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the temperature at the heat pump. The user can select pool or spa mode,
but must turn off the heat pump at the heat pump display panel.
Two-wire controller (with internal thermostat):
1. Deactivate power to heat pump.
2. Remove heat pump electrical access panel.
3. Route the control wiring to the low voltage side of the electrical enclosure. Follow all National Electric Codes
(NEC) unless State or Local guidelines supersede.
4. Connect the controller wires to the microprocessor as follows:
Connect one wire to "Y". See Figure 1 .
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Connect other wire to "Z".
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The polarity of the wire is not important.
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5. Reattach heat pump access panel.
6. Apply power to heat pump.
7. Program heat pump for a two-wire controller. See "Using JAO interface" on page 20.
8. Test external controller. See "Operating Heat Pump (With an External Controller)" on page 29.
®
Technical Support.
® heat pumps are equipped with optional
Points to the Microprocessor
Figure 1
Dry Contact Connection
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