Rothenberger ROSLIM DIGITAL Mini Air Conditioner Condensate Pump – 18 L/h, 12 m Head, with Reservoir (1099906)

Rothenberger ROSLIM DIGITAL 18L/12m (product code 1099906) is a mini air conditioner condensate pump with reservoir that drains the condensate collected in split air conditioner indoor units. With its slim pump body and separate reservoir unit, it can be hidden inside the air conditioner trunking or behind the indoor unit; with 18 L/h flow, 12 meter discharge head and 17–19 dB(A) sound level, it is designed for installations where the condensate cannot drain by gravity.

Quiet, Slim-Body Digital Condensate Pump for Split Air Conditioners

ROSLIM DIGITAL 18L operates in two flow modes in the 12–18 L/h range and handles the condensate of indoor units with up to 16 kW (54,600 BTU/h) of cooling capacity. With its wide 100–240 V supply range and power consumption below 4 W, it provides quiet, continuous drainage in residential and office wall-mounted air conditioners. For higher-capacity units, the same family's ROSLIM DIGITAL 40L/20m (1099907) model is preferred.

Technical Specifications (ROTHENBERGER Information)

• Brand / Model: ROTHENBERGER ROSLIM DIGITAL 18L/12m · product code 1099906
• Product Type: mini (slim) air conditioner condensate pump with reservoir
• Maximum Flow: 18 L/h (2 modes in the 12–18 L/h range)
• Maximum Recommended Discharge Head: 12 m
• Suitable Unit Capacity: up to 16 kW (54,600 BTU/h)
• Power Supply: 100–240 V AC, 50/60 Hz · power consumption below 4 W
• Sound Level (1 m): 17–19 dB(A)
• Maximum Suction Lift: 2 m
• Maximum Water Temperature: 40 °C
• Drain Pipe: 6 mm inner diameter
• Electrical Class / Protection: Class II appliance · fully potted body, IP45
• Pump Body Dimensions (L × W × H): 185 × 36 × 34 mm

Box Contents

• Pump body and reservoir unit
• Transparent connection hose and elbow
• Adhesive strips for mounting

Technician's Tips

• Mount the reservoir level: fix the reservoir unit horizontally below the drain outlet of the indoor unit; a tilted reservoir causes the pump to start late or run dry.
• Hide the body inside the trunking: the slim pump body fits inside the air conditioner trunking or behind the indoor unit; secure the body with adhesive tape so it does not vibrate.
• Keep the suction line short: the 2 m suction value is the limit under ideal installation conditions; run the hose between the reservoir and the pump short and kink-free.
• Don't leave dips in the discharge line: first route the drain hose upward and then let it run with a continuous slope; water collecting in the line strains the pump unnecessarily.
• Periodic cleaning: clean the reservoir filter and drain pan during maintenance; a clogged filter is the most common cause of noise and flow loss.