A1. A feed water system, which feeds
water up to the secondary side by the use of refrigeration
without feed water pump on the secondary side (i.e.,
the secondary-side feed water pump installed between
machine and the air conditioner), is referred to the
primary pump system. In order to apply the Flow Smart® to this
system, it is needed to install two-way valve control mechanism
for flow rate control in the bypass piping and also a flow
meter in the bypass piping for monitoring the flow rate.
Furthermore, if no flow meters are installed in the return
load system on the secondary side, the flow meter is
also required there.