How to Install a Foam Heater – Wave Global

Overview

This guide explains how to safely reinstall the heater unit into spa models where the heater sits within the foam wall and outer liner system. Follow these steps carefully to ensure correct reconnection and safe operation.

⚠️ Before You Start

Ensure the spa is still powered off at the mains
Check all components are clean, dry, and undamaged
Make sure all seals and clamps are in good condition
Keep all fittings ready for reconnection

✅ Step-by-Step Instructions (Reverse Process)

1. Position the heater unit

Carefully place the heater unit back into the foam wall cavity
Ensure it sits correctly in its original position
Avoid twisting or forcing any pipes or cables

2. Reconnect the air blower connector

Locate the air blower connector under the heater unit
Reattach and secure it:
- Screw the connector back in place OR
- Refit the blower pipe and tighten the jubilee clamp

3. Reconnect the dual inlet pipe (if applicable)

For spas with 2 filters:
- Align the dual inlet pipe on the side of the heater
- Refit the pipe
- Tighten the jubilee clip securely using a screwdriver

4. Feed the power cable and PRCD plug back through

Carefully thread the cable and PRCD plug back through the access hole
Ensure the cable is not pinched or under tension

5. Reconnect and secure the controller

Pull the controller cable back through the liner access point
Reconnect the wired controller
Secure it back into position

6. Re-zip the outer liner

Carefully align the outer and inner liner
Fully zip the outer liner closed
Ensure no cables or pipes are trapped in the seal

7. Reinstall inlet and outlet fittings

Insert the filter inlet and outlet fittings back into the spa
Use the wrench to tighten them securely (do not overtighten)

8. Reinsert the filter(s)

Place filter(s) back into the spa housing
Ensure correct seating
Some models require two filters

9. Refill the spa

Refill the spa with water to the correct fill line
Check all connections for alignment during filling

10. Restore power and test

Turn the spa back on at the mains
Run a full system check:
- Water circulation
- Air bubble function
- Heating operation
- No leaks

🚨 Important Notes

Never run the heater dry (without water in the spa)
Check all clamps and seals before powering on
If leaks occur, turn off power immediately and inspect fittings