Sauermann SI-83 2 Litre Condensate Tank Pump for AC & Boiler Systems

Sauermann SI-83 is a 2-litre reservoir condensate tank pump — also known as a tank condensate pump, reservoir pump, or condensate removal pump — designed for air conditioning systems, boilers, and fan coil units where gravity condensate drainage is not possible and higher condensate volumes require a larger capacity tank.

Key Specifications:

• Tank capacity: 2 litres
• Max lift (head): 5m
• Voltage: 220–240V / 50Hz
• Safety device: built-in float switch with alarm output
• Applications: AC systems, condensing boilers, fan coil units
• Housing colour: White
• Country of origin: France
• SKU: SI-83

Compatible Systems:

• Wall-mounted and ceiling cassette AC units
• Ceiling concealed and ducted AC systems
• Condensing boilers
• Fan coil units (FCUs)
• Multiple indoor units draining to a single collection point

Compatible Brands: Suitable for use with Daikin, Mitsubishi Electric, Fujitsu, Panasonic, Samsung, LG, Vaillant, Worcester Bosch, and most other AC and boiler brands.

When to Use This Pump:

• Ideal when gravity condensate drainage is not possible and a larger reservoir is needed to handle variable or high condensate flow rates.
• Suited to ceiling cassette and ducted installations where condensate volumes are higher than a mini pump can handle.
• Use where multiple indoor units drain to a single collection point — the 2-litre tank accommodates combined flow rates.
• Also suitable for condensing boiler condensate removal where the boiler drain cannot reach a suitable waste outlet by gravity.

SI-83 Tank Pump vs SI-10 Mini Pump — Which Do I Need?

• Sauermann SI-10 — compact inline pump for single wall-mounted split AC units with standard condensate volumes
• Sauermann SI-83 — 2-litre reservoir tank pump for larger systems, cassette units, multiple indoor units, or boiler applications with higher condensate volumes

Frequently Bought With:

• Castel DH-ADP96 Flexible Condensate Drain Hose – 50m Coil — standard drain hose for condensate pump installations
• Jubilee Clip 9–12mm — for securing the outlet hose connection
• Sauermann Tee Connectors 6mm – Pack of 5 — for multi-unit condensate drain runs

Frequently Asked Questions:

Can the SI-83 be used with a ceiling cassette AC unit?

Yes. The SI-83's 2-litre tank is well suited to ceiling cassette installations where condensate volumes are higher than a mini pump can handle. Check the required lift height against the 5m max head specification.

Can the SI-83 be used for boiler condensate removal?

Yes. The SI-83 is suitable for condensing boiler condensate removal where the boiler drain cannot reach a suitable waste outlet by gravity. It is compatible with the mildly acidic condensate produced by condensing boilers.

What is the difference between the SI-83 and the SI-10?

The SI-10 is a compact inline pump for single wall-mounted splits with standard condensate volumes. The SI-83 is a larger 2-litre reservoir tank pump for higher-volume applications including cassettes, ducted systems, multiple indoor units, and boilers.

Does this pump include a safety float switch?

Yes. The SI-83 includes a built-in float switch with alarm output that triggers when the tank reaches high-water level, protecting the system from overflow.

Is this pump suitable for R32 systems?

Yes. The pump handles condensate water only and is refrigerant-agnostic — compatible with R32, R410A, R22, and all other common refrigerants.