Installation Instructions

DANGER

Failure to heed the following will result in injury or death.

 

  • Deactivate power while routing wiring to control board.
  • RISK OF ELECTRICAL SHOCK FROM ENERGY STORED IN CAPACITORS - MODELS EQUIPPED WITH VARIABLE FREQUENCY COMPRESSOR DRIVES STORE ELECTRICITY EVEN AFTER THE POWER HAS BEEN DEACTIVATED AT THE POWER BREAKER. Wait for 2 minutes after the shut down of equipment before servicing.
  • This section is only for qualified installers who are familiar with the swimming pool and spa safety standards.
  • The installer must be familiar with service industry techniques.
  • Follow all National Electric Codes (NEC) and / or State and Local guidelines.

NOTICE

Failure to heed the following may result in damage to equipment.

 

  • Insure a proper electrical ground between power control board and heat pump.
  • To permit proper air circulation, the device must be mounted at least 12 inches (30 cm) about ground level or any other air flow obstruction.
  • Warranties may be voided if the equipment has been improperly installed. Failure to properly operate, maintain, or repair the device may void the factory warranty.
  • Do not attempt to “hot swap” connections with power to the device. Damage to equipment will occur and is not covered by warranty.

 

STEP 1 - Choose a Mounting Location:

  • When selecting a location, choose a flat, stable, vertical surface to mount the relay center.
    • DO NOT attach the relay center onto the sides of the Heat Pump or any other equipment.
  • Allow enough clearance for electrical conduit and connections at the bottom of the enclosure.

STEP 2 - Install Relays Inside Relay Box Enclosure:

  1. Open the relay enclosure box.
  2. Install relays to the inside of the enclosure.
    • The kit comes with two relays.
    • Mounting hardware and connectors for four additional relays are also included. Retain these parts for future use.

STEP 3 - Mount the Relay Center:

  • Mount the relay center using the hardware provided.
  • Using a small level can be helpful for proper alignment.
  • For concrete/ masonry surfaces a 1/4" masonry bit is required.

STEP 4 - Mount Expansion Board in Heat Pump:

  • Disconnect all power to the heat pump and any connected devices. Use a test meter to confirm power is off and capacitors are discharged.
  • Use Expansion Board Installation Instructions (LTP0215) to mount the expansion board inside the heat pump.
  • Connect expansion board cable to the expansion board and heat pump control board.

STEP 5 - Connect Devices to Relays:

Relay Connection Example

Figure 4

  • Connect device wiring to relay connection points (line and load) using properly sized wire for the device being controlled.
    • See device instructions for connection points.

 

STEP 6 - Connect Relays to Heat Pump Expansion Board:

22 gauge minimum, 2 conductor, outdoor rated wire is provided by the installer. Follow all local codes pertaining to routing low voltage control wiring.

Expansion Board Relay Connections

Figure 5

  1. Route the appropriate number of control wires (one 2 conductor wire per relay used) between the relay center and the heat pump control panel.
  2. Route the wiring so that it will not be stepped on or damaged by be lawn maintenance or similar equipment that could cause damage.
  3. Strip back and connect wiring to the relay coil at connection point "0" and "1" on each relay.
  4. Inside the heat pump electrical panel use the inline wire connectors (provided), to attach a relay connector (provided).
  5. Attach the relay connectors to the expansion board terminals "A"-"F".

STEP 7 - Programming:

  1. Reconnect all AC power on the device, heat pump, and connected devices.
  2. Program relays to be used as needed on the heat pump.
    • See AquaCal® External Expansion Board Upgrade manual (LTP0167).
  3. Test that all equipment operates as expected. Then re-attached all access plates.
  4. Cable manage all wires and cords leading to and from equipment to prevent equipment damage.

 

 

Additional Documentation:

Recommended Relays (AquaCal® Part # STK0257) - (up to six relays will fit in the relay center)

Recommmended Relays

 

Relay Center Schematic