Hoshizaki ROX-20TA-U Instruction Manual page 27

5. Do not install the unit where there is a possibility of freezing. Remove water
from the unit if ambient temperature may fall below 32°F (0°C). Frozen water
may damage water supply pipes and cause water leakage.
6. Maintain water supply pressure to the unit within 15-115PSIG (0.10-0.78MPa).
Excessively low or high water pressure may cause poor performance of acid
and alkaline water, trouble or water leakage from the connections.
* Be sure to install the Pressure Reducing Valve
after the Water Filter and Water Pressure Gauge.
Pressure Reducing Valve Inlet is 1/2" male pipe
thread (MPT). The water electrolyzer will not work
properly without the Pressure Reducing Valve.
Note: Be sure to check the direction of the
Pressure Reducing Valve. See Fig. 16.
* Water supply inlet is 3/4" MPT. Connect the unit with the Pressure Reducing Valve using the
Water Supply Hose (Accessory).
Note: Place the Gaskets between the Water Supply Hose and unit water supply inlet and the
Pressure Reducing Valve and tighten properly. Incomplete connection may cause
water leakage. See Fig. 17.
* Prepare a drain hose with a plastic shut-off valve if water needs to be removed from the unit
or water may freeze in the unit in cold areas. Remove the drain cap on the back of the unit
and attach the plastic joint, vinyl or PVC hose and plastic shut-off valve. Drain outlet is 3/4"
female pipe thread (FPT). See Fig. 18.
Drain Cap
Gasket
Rear Panel
Outlet
Water Supply Hose
Fig. 17
Fig. 18
23
Fig. 16
Pressure Reducing Valve
Gasket
Vinyl or
PVC Hose
Joint (Plastic)
Inlet
Shut-off Valve
(Plastic)