Booster set operating limits

Type of pumped liquids Water with no gas or aggressive substances
Maximum pumped liquid temperature +35°C for domestic uses (EN 60335-2-41)
Minimum pumped liquid temperature 1°C to avoid icing
Operating ambient temperature +5°C at 40°C
Relative humidity Max 50% at 40°C
Air impurities The air must be clean and free of acid vapours, corrosive gases and excessive amounts of dust.
Storage temperature +5°C to 40°C
Suction conditions Minimum positive pressure 0.1 bar. Max. 0.5 bar

Conversion factors

Flow rate

l/min ÷ 60 = l/sec
m3/hour ÷ 3.6 = l/sec
GPM ÷ 13.2 = l/sec
kg/sec = l/sec

Figures are given for clean cold water.

Pressure

m Hd ÷ 10.2 = bar
PSI ÷ 14.47 = bar
kPa ÷ 100 = bar
kg/cm2 ÷ 10.2 = bar

Figures are given for clean cold water.

Variable-speed flow, head and power calculations

Flow rate

Flow rate at reduced speed = (reduced speed ÷ full speed) X flow rate at full speed

Head

Head at reduced speed = (reduced speed ÷ full speed)2 X head at full speed

Power

Power at reduced speed = (reduced speed ÷ full speed)3 X power at full speed
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