Product Overview
The Grundfos SCALA1 3-45 model 99631736 is a 230V self-priming booster system that combines the pump, motor, sensor, controller, and small pressure tank in one enclosure. It is intended to start and stop automatically as water demand changes, supporting compatible residential pressure-boosting, storage-tank, rainwater, and garden-water systems. Bluetooth communication with the Grundfos GO app allows supported settings and operating information to be accessed from a compatible device.
This model has a confirmed rated flow of 14 GPM, rated head of 82.02 ft, and maximum head of 147.6 ft. These values describe different points on the pump curve and should not be treated as flow and pressure available at the same time. Correct selection requires the required flow at the total dynamic head after accounting for inlet pressure, elevation, suction conditions, pipe size, fittings, and pressure-setting requirements.
The unit includes automatic operating protections and uses a 230V NEMA 6-15 plug. Confirm that the electrical circuit, water source, plumbing arrangement, and installation environment meet the product manual. This model is identified as a replacement reference for Grundfos 96860201 and 96860207; verify the complete duty point and connection requirements before substitution.
Key Features:
- Integrated self-priming water-booster system
- 230V single-phase operation
- Pump, motor, sensor, controller, and tank in one unit
- Bluetooth support through the Grundfos GO app
- Automatic operation based on water demand
- Built-in operating protections
- 1 in. NPT male inlet and outlet
Common Uses:
- Residential water-pressure boosting
- Storage-tank or cistern supply to a home
- Compatible rainwater systems
- Garden and light irrigation pressure support
Technical Specifications:
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Model: SCALA1 3-45
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Product Number: 99631736
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Voltage: 230V single phase
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Maximum Input Power: 900W
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Rated Motor Output: 0.764 HP
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Rated Current: 3.71A
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Rated Flow: 14 GPM
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Rated Head: 82.02 ft
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Maximum Head: 147.6 ft
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Start Pressure: 31.91 PSI
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Maximum Operating Pressure: 116.03 PSI
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Maximum Inlet Pressure: 43.51 PSI
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Connections: 1 in. NPT male inlet and outlet
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Liquid Temperature Range: 32-113°F
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Power Cord: 4.92 ft with NEMA 6-15 plug
Dimensions and Weight:
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Net Weight: 26.5 lb
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Gross Weight: 30.9 lb
Installation and Sizing Notes:
Size the pump from the performance curve rather than the maximum values alone. Confirm available voltage, circuit protection, inlet conditions, total dynamic head, pipe diameter, water temperature, system pressure, drainage, ventilation, and freeze protection. Follow the linked Grundfos specification sheet and installation manual.
FAQ:
Does this model use 115V power?
No. Product number 99631736 is the 230V version with a NEMA 6-15 plug.
Is 14 GPM guaranteed at 147.6 ft of head?
No. Rated flow and maximum head are separate pump-curve values.
Can settings be accessed from a phone?
Supported monitoring and configuration are available through Bluetooth and the Grundfos GO app.
What older product numbers are referenced?
This listing identifies 96860201 and 96860207 as replacement references; confirm system compatibility before substitution.
Why Buy From Big Frog Supply?
Big Frog Supply provides clear technical information, helpful support, and convenient online ordering for residential water-pressure systems.
