Grundfos SCALA1 5-55 — 99631739 Water Booster Pump 230V
Grundfos SCALA1 5-55 (99631739) — All-in-One High Head Booster Pump
The Grundfos SCALA1 5-55 is a powerful, compact booster pump system combining pump, motor, control, sensor, and tank into a single unit. Designed to deliver higher head and stronger flow, this variant suits homes or systems with tougher pressure needs. Its built-in smart diagnostics and Bluetooth connectivity add ease and control to your installation.
Key Features & Benefits
- Integrated all-in-one design — no external control or parts
- High-output variant: up to 5–55 GPM and increased head capacity
- Self-priming capability for tank-to-home use
- Bluetooth support for monitoring and configuration via Grundfos GO app
- Smart protection: dry-run, overload, diagnostics, and auto safeguard modes
- Quiet operation and sealed design (IP6X) — no exposed electronics
Applications
- Pressure boosting in multi-story homes or challenging plumbing layouts
- Overcoming low city water pressure
- Tank-fed systems or rainwater boosting
- Small irrigation or landscape circuits with higher elevation lift
Specifications
| Model / Variant | SCALA1 5-55 (99631739) |
| Flow Capacity | 5 – 55 GPM (range varies by system conditions) |
| Max Head | ~ 180 ft (55 m) (consult variant curves) |
| Voltage / Phase | 230 V, Single Phase |
| Motor Type | Brushless DC speed-controlled |
| Enclosure / Protection | Sealed (IP6X), built-in diagnostics |
| Noise Level | Approx. 55 dB under normal conditions |
Common Questions
Q: What makes “5-55” different from “3-45”?
A: The “5-55” variant is designed to deliver higher head and greater flow under challenging plumbing conditions, while maintaining the smart integrated features of SCALA1.
Q: Can I use this inside the house?
A: Yes — it’s quiet (≈55 dB) and sealed, making it suitable for indoor installations if ventilation and access are acceptable.
Q: What protections are included?
A: Dry-run protection, overload headroom, lock-up protections, plus internal diagnostics via Bluetooth.
Q: How do I configure pressure setpoints?
A: Use the Grundfos GO app via Bluetooth to adjust setpoints, operation modes, and review performance logs.
The SCALA1 5-55 combines smart pumping with serious head and flow capability — perfect for demanding residential or light commercial setups.
This item replaces: 97855091
Compare Grundfos SCALA1 Booster Pump Models
| Model | Voltage | Flow Range (GPM) | Max Head (m / ft) | Type | Connectivity | Key Use Case |
|---|---|---|---|---|---|---|
| SCALA1 3-45 (99631736) | 230 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | General residential boosting (230 V supply) |
| SCALA1 3-45 (99631742) | 115 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | Homes with standard 115 V circuits |
| SCALA1 5-55 (99631739) | 230 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | Multi-story homes / longer pipe runs |
| SCALA1 5-55 (99631754) | 115 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | High-performance boosting on 115 V supply |
All SCALA1 boosters share the same smart, compact design — just choose your voltage and performance level for the perfect household pressure solution
Grundfos SCALA1 5-55 (99631739) — All-in-One High Head Booster Pump
The Grundfos SCALA1 5-55 is a powerful, compact booster pump system combining pump, motor, control, sensor, and tank into a single unit. Designed to deliver higher head and stronger flow, this variant suits homes or systems with tougher pressure needs. Its built-in smart diagnostics and Bluetooth connectivity add ease and control to your installation.
Key Features & Benefits
- Integrated all-in-one design — no external control or parts
- High-output variant: up to 5–55 GPM and increased head capacity
- Self-priming capability for tank-to-home use
- Bluetooth support for monitoring and configuration via Grundfos GO app
- Smart protection: dry-run, overload, diagnostics, and auto safeguard modes
- Quiet operation and sealed design (IP6X) — no exposed electronics
Applications
- Pressure boosting in multi-story homes or challenging plumbing layouts
- Overcoming low city water pressure
- Tank-fed systems or rainwater boosting
- Small irrigation or landscape circuits with higher elevation lift
Specifications
| Model / Variant | SCALA1 5-55 (99631739) |
| Flow Capacity | 5 – 55 GPM (range varies by system conditions) |
| Max Head | ~ 180 ft (55 m) (consult variant curves) |
| Voltage / Phase | 230 V, Single Phase |
| Motor Type | Brushless DC speed-controlled |
| Enclosure / Protection | Sealed (IP6X), built-in diagnostics |
| Noise Level | Approx. 55 dB under normal conditions |
Common Questions
Q: What makes “5-55” different from “3-45”?
A: The “5-55” variant is designed to deliver higher head and greater flow under challenging plumbing conditions, while maintaining the smart integrated features of SCALA1.
Q: Can I use this inside the house?
A: Yes — it’s quiet (≈55 dB) and sealed, making it suitable for indoor installations if ventilation and access are acceptable.
Q: What protections are included?
A: Dry-run protection, overload headroom, lock-up protections, plus internal diagnostics via Bluetooth.
Q: How do I configure pressure setpoints?
A: Use the Grundfos GO app via Bluetooth to adjust setpoints, operation modes, and review performance logs.
The SCALA1 5-55 combines smart pumping with serious head and flow capability — perfect for demanding residential or light commercial setups.
This item replaces: 97855091
Compare Grundfos SCALA1 Booster Pump Models
| Model | Voltage | Flow Range (GPM) | Max Head (m / ft) | Type | Connectivity | Key Use Case |
|---|---|---|---|---|---|---|
| SCALA1 3-45 (99631736) | 230 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | General residential boosting (230 V supply) |
| SCALA1 3-45 (99631742) | 115 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | Homes with standard 115 V circuits |
| SCALA1 5-55 (99631739) | 230 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | Multi-story homes / longer pipe runs |
| SCALA1 5-55 (99631754) | 115 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | High-performance boosting on 115 V supply |
All SCALA1 boosters share the same smart, compact design — just choose your voltage and performance level for the perfect household pressure solution
Description
Grundfos SCALA1 5-55 (99631739) — All-in-One High Head Booster Pump
The Grundfos SCALA1 5-55 is a powerful, compact booster pump system combining pump, motor, control, sensor, and tank into a single unit. Designed to deliver higher head and stronger flow, this variant suits homes or systems with tougher pressure needs. Its built-in smart diagnostics and Bluetooth connectivity add ease and control to your installation.
Key Features & Benefits
- Integrated all-in-one design — no external control or parts
- High-output variant: up to 5–55 GPM and increased head capacity
- Self-priming capability for tank-to-home use
- Bluetooth support for monitoring and configuration via Grundfos GO app
- Smart protection: dry-run, overload, diagnostics, and auto safeguard modes
- Quiet operation and sealed design (IP6X) — no exposed electronics
Applications
- Pressure boosting in multi-story homes or challenging plumbing layouts
- Overcoming low city water pressure
- Tank-fed systems or rainwater boosting
- Small irrigation or landscape circuits with higher elevation lift
Specifications
| Model / Variant | SCALA1 5-55 (99631739) |
| Flow Capacity | 5 – 55 GPM (range varies by system conditions) |
| Max Head | ~ 180 ft (55 m) (consult variant curves) |
| Voltage / Phase | 230 V, Single Phase |
| Motor Type | Brushless DC speed-controlled |
| Enclosure / Protection | Sealed (IP6X), built-in diagnostics |
| Noise Level | Approx. 55 dB under normal conditions |
Common Questions
Q: What makes “5-55” different from “3-45”?
A: The “5-55” variant is designed to deliver higher head and greater flow under challenging plumbing conditions, while maintaining the smart integrated features of SCALA1.
Q: Can I use this inside the house?
A: Yes — it’s quiet (≈55 dB) and sealed, making it suitable for indoor installations if ventilation and access are acceptable.
Q: What protections are included?
A: Dry-run protection, overload headroom, lock-up protections, plus internal diagnostics via Bluetooth.
Q: How do I configure pressure setpoints?
A: Use the Grundfos GO app via Bluetooth to adjust setpoints, operation modes, and review performance logs.
The SCALA1 5-55 combines smart pumping with serious head and flow capability — perfect for demanding residential or light commercial setups.
This item replaces: 97855091
Compare Grundfos SCALA1 Booster Pump Models
| Model | Voltage | Flow Range (GPM) | Max Head (m / ft) | Type | Connectivity | Key Use Case |
|---|---|---|---|---|---|---|
| SCALA1 3-45 (99631736) | 230 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | General residential boosting (230 V supply) |
| SCALA1 3-45 (99631742) | 115 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | Homes with standard 115 V circuits |
| SCALA1 5-55 (99631739) | 230 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | Multi-story homes / longer pipe runs |
| SCALA1 5-55 (99631754) | 115 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | High-performance boosting on 115 V supply |
All SCALA1 boosters share the same smart, compact design — just choose your voltage and performance level for the perfect household pressure solution
