What the Hydro + Hydro Foot + Microbubble Schematic Shows: Two Hydro Pumps Plus the Pressure Tank on Two Dedicated Lines

This page explains the Hydro + Hydro Foot Therapeutic Massage + Microbubble Therapy + Ozone component diagram, published by Ella's Bubbles as Hydro+Hydro+Micro.pdf (revision 01-16-26). It is the schematic for tubs that combine two hydro pumps, one for the seat jets and one for the foot jets, with the Infusion Microbubbles system and its pressure tank, but no air massage pump. If your order was written as Hydro + Hydro Independent Foot Massage + Microbubble, this is your drawing. Here you will find which tubs the diagram lists, what its seven numbered components are, how the seat, foot, and microbubble circuits are drawn, and the electrical requirements printed at the top of the sheet.

Which Tubs This Diagram Lists

The "Available With" box prints Monaco, Royal, Transfer 32, Transfer 60, and XXL. As on the other Ella schematics, "XXL" is the short form for the TransferXXL. So the Royal, Monaco, Transfer32, Transfer60, and TransferXXL can all be built with this three-system hydro package. To see which packages each Ella model offers and to match your own order to the right diagram, use the therapy package combinations by model guide.

The Seven Numbered Components

The legend along the bottom of the diagram lists seven components. They are reproduced below exactly as printed.

Compared with the plain Hydro + Hydro Foot diagram, this sheet adds item 3, the Infusion Microbubbles system, and renumbers the supporting electronics after it. The count of pumps rises to three: two hydro pumps and one microbubble water pump.

Seat and Foot Hydro Circuits

The two hydro systems are drawn much as they are on the diagram without microbubbles, which means they remain fully independent of each other and of the microbubble system.

1. Seat circuit: the Hydro Massage push control and its Air Flow Hydro Massage Intensity Dial Control feed a Relay Switch, which starts the Seat Jets Hydro Pump. Water flows Out, To Hydro Jets, and into the seat Hydro Jets. The Ozone Generator's "Ozone Out to Hydro System" line joins this circuit, so ozone sanitizes the seat hydro plumbing.
2. Foot circuit: a second Air Flow Hydro Massage Intensity Dial Control and the foot ON/OFF button feed a second Relay Switch, which starts the Foot Jets Hydro Pump. From the pump, water flows Out, To Hydro Jets, through the In-Line Water Heater, and on to the foot Hydro Jets.

The in-line water heater therefore sits in the foot loop on this diagram. It maintains the temperature of water already in the tub while the foot pump circulates, and it is not part of the seat circuit or the microbubble circuit. Each hydro system keeps its own dial, so you can set a gentle seat massage and a firmer foot massage at the same time. Read more in independent foot massage explained.

The Microbubble Circuit

The microbubble path is the new chain on this drawing, and it is drawn along the bottom of the sheet.

1. The Infusion Microbubbles Push Control sends the ON signal to its own Relay Switch.
2. The relay powers the Water Pump, which draws tub water in through its "Water in" line.
3. The pump sends that water into the MicroBubbles Pressure Tank, printed in the legend as the Pressure Vessel.
4. From the tank, the line labeled "Micro Bubbles Out to Jet" returns the water to the tub through the microbubble jet, where the cloud of tiny bubbles is released.

Because the microbubble system has its own pump, relay, and push control, it runs whether or not either hydro pump is on. The pressure vessel is what sets microbubble therapy apart from ordinary jets: water passes through the tank under pressure before it returns to the tub, and that is how the tiny bubbles are produced at the jet. For a description of the therapy itself, see microbubble infusion therapy.

Electrical Printed on the Diagram

Two wall outlets are shown at the top of the sheet, with identical requirements printed under each.

The individual component branches are marked "Electrical 110V", and the footer repeats the standard note: "Please View Specifications for Electrical Amperage (A), Voltage (V) and Wattage (W)." Give your electrician both this schematic and the spec sheet for your model, since the schematic sets the number and protection of the circuits while the spec sheet lists each pump's amperage. The drawing shows only these two outlets serving three pumps, a heater, and the electronics, which is why the dedicated-line requirement matters even more on this package.

Related Diagrams

Ella publishes a family of these component diagrams, and the right one depends on the exact package on your order. If your tub has the two hydro pumps but no microbubble system, the Hydro + Hydro Foot diagram applies. If your tub adds an air massage pump to this set, the Air + Hydro + Hydro Foot + Microbubble diagram applies instead. When you are not sure which package you have, check your order paperwork or contact your Ella dealer or the team at ellasbubbles.com/support or (800) 480-6850 with your serial number, and they will point you to the correct drawing.

Download the official document: Hydro + Hydro Foot Therapeutic Massage + Microbubble Therapy + Ozone Component Diagram

Related Guides

• Hydro Massage vs Air Massage vs Microbubble: What Each System Does and How They Combine
• What electrical circuits does the Transfer32 three-system therapy package require?
• How Many 20 Amp Circuits Does the Ella Monaco Walk-In Tub Need?

Common Questions