Continuous water supply options equips the SU/SH series with a connection to a water supply system. There are two types avaliable:

• Connection port with pressure reducing valve (for plumbed water)
• Connection port without pressure reducing valve (for external tanks)

In addition, there is a ceiling-mounted water tank option that supplements the standard tank. The water volume is 5 L. It requires the continuous water supply connection port without a pressure reducing valve.