Mastercool 99946-BT-2 Spartan 4-Way Smart Manifold | Bluetooth | 4.3" Touchscreen | Built-in Vacuum Sensor

Mastercool 99946-BT-2 Spartan is a professional 4-way digital smart manifold gauge — also known as a digital manifold, smart manifold, or Bluetooth manifold gauge — designed for HVAC system diagnostics, refrigerant charging, superheat/subcool measurement, vacuum testing, and data logging. The built-in vacuum sensor eliminates the need for a separate micron gauge.

When to Use This Manifold:

• F-Gas compliant commissioning — pressure test, vacuum decay test, and refrigerant charge in one tool.
• Use where wireless monitoring is required — Bluetooth connectivity allows readings to be monitored from up to 80m away via the Mastercool Connect app.
• Ideal for engineers servicing multiple refrigerant types — supports 100+ refrigerants, including R32, R410A, R1234yf, R454B, and R744 (CO₂).
• The built-in vacuum sensor (1-micron resolution) eliminates the need to carry a separate micron gauge on site.

Key Features & Benefits

• 4.3" colour touchscreen LCD – intuitive navigation with a quick slide of the finger
• Built-in vacuum sensor – range 20,000 to 1 micron; no separate micron gauge required
• Bluetooth® 4.2 and 5 – 260ft (80m) line-of-sight range; connects to Mastercool Connect app (iOS & Android)
• Automatic superheat & subcool calculation – instant diagnostics across 100+ refrigerants
• Data logging – up to 36 hours of recorded data
• Leak test timers and alarms built in
• Li-ion rechargeable battery – 30–36 hours normal use; USB-C charging
• 4-way valve configuration – high side, low side, and two additional service ports
• Gauge Class 1.0 accuracy

Display & Measurement

• Pressure: psi, bar, MPa, kg/cm², kPa
• Temperature: °F or °C
• Vacuum: micron, mBar, kPa, Pa, Torr
• Working pressure: 0 to 725 psi (50 bar)
• Proof pressure: 1000 psi (70 bar)
• Sensing accuracy: ±1 psi or 1% of reading
• Temperature accuracy: ±1°F (±0.5°C) between 32 and 160°F

Connections

• 1/4" m-flare and 3/8" m-fl (vacuum hose, 4-way only)
• USB-C charging cable included

Specifications

• SKU: 99946-BT-2
• Gauge class: 1.0
• Valve configuration: 4-way
• Vacuum sensor range: 20,000 to 1 micron
• Battery: Li-ion rechargeable, 30–36 hours
• Bluetooth: 4.2 and 5, 260ft (80m) range
• Operating temperature: 0 to 45°C
• Country of origin: USA

Supported Refrigerants (100+)

R32, R410A, R1234yf, R1234ze, R454B, R452B, R448A, R449A, R407C, R404A, R507A, R744 (CO₂), R290, R600a, R22, R134a, and 85+ more. Full list available in the Mastercool Connect app.

Repairable — Spare Parts Available

The Spartan manifold is fully repairable. Key spare parts include pressure sensor (99923-002), LCD assembly (99923-005-43B), keypad (99923-008), rubber boot (99923-RB-1), sight glass assembly (99923-SG), USB-C cable (99923-CPORT), and vacuum sensor (99923-003B-1). Browse Mastercool spare parts.

Frequently Bought With:

• Mastercool 70051 45° Flaring Tool — professional flaring tool for copper pipe connections
• Mastercool 70091 Flaring & Cutting Tool Set — complete pipe preparation kit

Frequently Asked Questions:

Does the 99946-BT-2 include a micron gauge?

Yes. The built-in vacuum sensor measures from 20,000 microns down to 1 micron, eliminating the need to carry a separate micron gauge. This is one of the key advantages of the Spartan over traditional analogue manifolds.

What is the difference between the 99946-BT-2 and the 99946-BT?

The 99946-BT-2 includes two temperature clamps for superheat and subcool measurement. The 99946-BT includes 60" hoses, a black vacuum hose, and a clamp but no temperature clamps. Choose based on whether you need temperature clamp accessories included.

Is the Spartan manifold compatible with R32 and R1234yf?

Yes. The 99946-BT-2 supports 100+ refrigerants including R32, R410A, R1234yf, R454B, R448A, R449A, and R744 (CO₂). Refrigerant data is updated via the Mastercool Connect app.

Can I use the Spartan manifold without the app?

Yes. All functions, including pressure, temperature, vacuum, superheat, subcool, and data logging, are fully accessible on the 4.3" touchscreen without the app. Bluetooth and the Mastercool Connect app add wireless monitoring and data export capabilities.

Is the Spartan manifold F-Gas compliant for UK commissioning?

The 99946-BT-2 provides the pressure testing, vacuum decay testing, and charging measurement functions required for F-Gas compliant commissioning records. Data logging supports service documentation requirements.