The HILO Booster Pump System Concept
A HILO booster pump system consists of high HP main pump[s] and a low HP jockey pump. It is
designed for applications which experience a large variation in water demand such as
schools, apartment buildings, condominiums, sport facilities, office buildings, etc.
What is a HILO Booster System?
The low HP jockey booster pump always starts first and handles all the off peak demand [which
exists during most part of the day and night]. The main pump[s] turn ON only when the
demand peaks, thus exceeding the capacity of the low HP Jockey pump.
Sequence of operation
The HILO concept COMPLEMENTS the operation of the VF drives. The VF drive is set to
run the pump at a minimum set speed, gains, and ramp up time that is optimized to
enable the pump to respond accurately to changes in pressure variations on the suction
side while maintaining constant pressure on the discharge side.
At startup, the high HP pump consumes half of full load amperes to satisfy any
demand. If this demand is small enough [off-peak] a low HP jockey pump will satisfy the
same demand with half of its own full load amperes, thus saving significant amount of energy.
The HILO concept can be applied to a variety of situations with fluctuation in demand:
Mansions - High end luxury homes with elaborate sprinkler system
Apartment & Condominium buildings
Hotels... and more