Balboa Ultimax 5235210-S Spa Pump – 230V, 2-Speed, 56-Frame, 10/3.5A
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The Balboa Ultimax 5235210-S spa pump is a complete motor-and-wet-end assembly for compatible hot tub replacement applications. It features 230V operation, a 56-frame motor, and two speeds rated at 10.0 amps on high speed and 3.5 amps on low speed.
With center suction, side discharge, and nominal 2-inch plumbing connections, this Balboa/Vico Ultimax pump supports jet operation and low-speed circulation in compatible spa systems.
Can be wired for one-speed or two-speed operation. Power cord and pump unions are not included.
Specifications
| Specification | Details |
|---|---|
| Manufacturer | Balboa Water Group |
| Pump Family | Ultimax / Vico Ultimax |
| Manufacturer Part Number | 5235210-S |
| Common Horsepower Descriptions | 2.5 HP / 3 HP; verify fitment by specifications |
| Voltage | 230V |
| Frequency | 60Hz |
| Motor Frame | 56Y / 56-frame |
| Speeds | Two-speed motor |
| High-Speed Amperage | 10.0A |
| Low-Speed Amperage | 3.5A |
| Wiring Options | One-speed or two-speed operation |
| Suction Position | Center |
| Discharge Position | Side |
| Suction Connection | Nominal 2-inch male buttress thread |
| Discharge Connection | Nominal 2-inch male buttress thread |
| Approximate Outside Thread Diameter | 3 inches |
| Wet-End Orientation | Adjustable; verify clearance and manufacturer instructions |
| Assembly Supplied | Complete motor and wet end |
| Power Cord | Not included |
| Pump Unions | Not included |
Older Pump Numbers and Cross-References
Older Balboa and Vico pumps may carry different manufacturing numbers, motor identifiers, or distributor codes. The following references are documented by spa-parts suppliers for the 5235210-S family.
| Reference | Identification |
|---|---|
| 5235210-B | Alternate pump designation |
| 1016026 | Listed alternate pump number |
| BA593970 | Alternate reference |
| BA542493 | Alternate reference |
| PRC9089X | Motor/application cross-reference |
| 5KCP49UN9089X | Motor identifier associated with replacement applications |
| BB5235210S / BB5235210-S | Distributor-prefixed references |
| VIC5235210S / VIC5235210-S | Vico-prefixed references |
| 10-5235210 | HydroQuip distributor designation |
A motor number alone does not identify the complete pump. Check the existing wet end, electrical ratings, plumbing, and mounting dimensions before selecting a replacement.
Have a different number on your label? Send Whirly Bros photos of the complete pump, motor label, and plumbing connections for help checking compatibility.
Compare Balboa Ultimax Pump Models
These pumps share the Ultimax family name, but their electrical ratings differ.
| Model | Voltage | High-Speed Amps | Low-Speed Amps | Frame |
|---|---|---|---|---|
| 5235208-S | 230V | 8.8A | 3.0A | 56-frame |
| 5235210-S — this pump | 230V | 10.0A | 3.5A | 56-frame |
| 5235212-S | 230V | 12.0A | 3.5A | 56-frame |
These are identification references, not an interchangeability chart. Your spa control, electrical supply, plumbing, and required hydraulic performance must support the selected pump.
One-Speed and Two-Speed Operation
| Connection | Typical Use | What to Verify |
|---|---|---|
| Two-speed operation | Low speed for circulation and filtration; high speed for therapy jets | Compatible two-speed control and correct equipment configuration |
| One-speed operation | One selected motor speed operated by the spa control | Selected speed, control rating, and motor wiring diagram |
Follow the wiring diagram on the supplied motor. Never energize both speed terminals simultaneously.
Plumbing Size: Measure Before Ordering
Pump connection sizes are nominal. A “2-inch” connection does not measure 2 inches across its outside threads.
| Connection | Nominal Size | Approximate Outside Thread Diameter |
|---|---|---|
| Suction / inlet | 2 inches | 3 inches |
| Discharge / outlet | 2 inches | 3 inches |
Compare the union threads, sealing surfaces, and gasket fit with your existing plumbing. Matching thread diameter alone does not guarantee a leak-free connection.
Installation and Fitment Checklist
| Check | What to Compare |
|---|---|
| Electrical supply | 230V supply and compatible spa control |
| Motor ratings | 10.0A high speed / 3.5A low speed |
| Motor frame | 56-frame mounting arrangement |
| Plumbing | Nominal 2-inch suction and discharge |
| Discharge orientation | Outlet position relative to existing plumbing |
| Connection heights | Inlet and outlet alignment with the installed pipes |
| Motor base | Base width, mounting-hole spacing, and available clearance |
| Equipment cord | Correct connector, conductor arrangement, and condition |
| Unions and seals | Compatible union connections and suitable sealing components |
Motor brands and base designs may vary between production versions. Check the actual supplied pump’s dimensions before assuming it will use the existing mounting holes.
The adjustable wet-end orientation can help align the discharge with your plumbing. Follow the manufacturer’s procedure and verify clearance before making adjustments.
Why Horsepower Labels Differ
The 5235210-S is commonly advertised as either a 2.5 HP or 3 HP spa pump. Older spa labels may use different horsepower conventions.
Choose your replacement using the part number, voltage, motor speeds, amperage, frame, plumbing dimensions, and pump performance requirements together. A matching horsepower label alone does not confirm compatibility.
Frequently Asked Questions
Does this include the motor and wet end?
Yes. This is a complete Balboa Ultimax pump assembly.
Are the power cord and pump unions included?
No. Both are sold separately. Existing components may be reused if they are compatible and in suitable condition.
Can I use this pump with a one-speed control?
Yes, when connected for one selected speed according to the motor wiring diagram and matched to a compatible control system.
Will it replace my older UltraJet or Vico pump?
It may suit compatible replacement applications. Confirm the original pump number, electrical specifications, wet-end arrangement, plumbing alignment, and mounting dimensions before ordering.
Does a matching motor number guarantee fitment?
No. The same motor family can be paired with different wet ends. Check the complete pump assembly and its installation requirements.
Can this run on 115V or 120V?
No. The 5235210-S requires a 230V supply.
Can I rotate the discharge to match my plumbing?
The wet end supports orientation adjustment. Check the supplied instructions and available clearance; plumbing modifications may still be necessary.
Is it a direct replacement for every 56-frame, 10-amp pump?
No. Matching frame size and amperage alone does not establish matching hydraulic performance, plumbing, or physical fit.
Get Help Matching Your Spa Pump
Send Whirly Bros clear photos of your existing pump label, motor label, and plumbing connections. Include all visible part numbers so we can help review the replacement before you order.
Installation and wiring should be completed by a qualified spa technician or electrician following the instructions supplied with the pump.
