H&H 690

The H&H690 manual negative pressure unit is our smallest and lightest device intended for residential renovations. Sufficient for dust control in areas smaller than 35 m² (90 m³), which allows for approximately 6 air changers per hour.

Due to its low weight and compact size, the H&H 690 negative pressure unit is the best option for smaller and cramped apartment buildings, where negative pressure is required for one area at a time.

Features

Continuously adjustable level of negative pressure – the negative pressure level of the device can be adjusted to the desired level, thus preventing excessive negative pressure, and minimizing the consumption of energy and the production of noise

Monitoring the condition of the filters – the orange warning light is lit when approximately 10% of filter capacity remains – the red warning light is lit when filter capacity is fully spent

Monitoring of negative pressure requires an add-on device – separate precision pressure gauge HHPM1 or datalogger GDUA

Easy and effortless operation – switch the device on, adjust the level of negative pressure with the adjustment wheel using the precision pressure gauge HHPM1, and monitor the condition of the filters with the warning lights

Multifunctional negative pressure unit – suitable as is for use as an air filtration device, can be used both inside or outside the renovated area, in which case the area can be depressurized using suction connector assemblies and hoses. Combine with a mixing hood to use as a mixing station

Technical specifications

Depth x Width x Height

238 x 390 x 508

Weight, with G3+G4+H13 filters/without filters

7,6 kg / 6,0 kg

Air volume without filters, approx.

1000 m3/h

Air volume with new filters, approx.

620 m3/h¹ (G3+H13)

Air volume on MAX setting while the green light is lit

500-620 m3/h

Air volume with dirty filters while the red warning light is lit

≤500 m3/h¹

Dirt holding capacity of filters, approx.

270 Pa

Ventilator motor, Ziehl-Abegg

0,17 kW, 1,7 – 1,45 A

Supply current

230 V AC, 50/60 Hz

Adjustable RPM range, approx.

0-3930/min

Display 690 and 800

Warning LED for the filters

Display 800s, same as in 800 plus the following:

Pressure (± Pa), Energy (kWh), Operating hours (h)

Features

Included equipment

Technical specifications

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H&H Tuonti Espoo

H&H Tuonti Oulu