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F. Water Supply and Drain Connections
WARNING
Water supply and drain connections must be installed in accordance with applicable
national, state, and local regulations.
NOTICE
• Normal operating water temperature must be within 45°F to 90°F (7°C to
32°C). Operation of the appliance, for extended periods, outside of this normal
temperature range may affect appliance performance.
• Water supply pressure must be a minimum of 7 PSIG and a maximum of
113 PSIG. If the pressure exceeds 113 PSIG, the use of a pressure reducing valve
is required.
• External filters, strainers, or softeners may be required depending on water quality.
Contact your local Hoshizaki Certified Service Representative or local Hoshizaki
distributor for recommendations.
• Connect to potable water supply only. Do not connect to a hot-water supply.
• In areas where water damage is a concern, install in a contained area with a floor
drain.
• Water line installation to the appliance is not warranted by Hoshizaki.
• Water-hammer issues must be resolved by a qualified plumber before installing
the appliance. Water hammer can cause appliance damage that may lead to
water leakage or flooding.
• A minimum of 1/2" nominal ID hard pipe or equivalent is required for the drain
line. Installing a smaller diameter drain line will reduce water flow and may lead to
water leakage or flooding.
• If using the optional drain pump (HS-5061), test its operation every time the
appliance is cleaned and sanitized. See "IV.E. Optional Drain Pump HS-5061" for
details. If the optional drain pump is not operating properly, water could back up
and overflow, leading to costly water damage.
Water Supply
Inlet
Minimum Water Supply
Line Size
Drain Outlet
Minimum Drain
Line Size
1/2" Female Pipe
Thread (FPT)
1/4" Nominal ID
Copper Water Tubing or
Equivalent
1/2" Female Pipe
Thread (FPT)
1/2" Nominal
ID Hard Pipe or
Equivalent
• A plumbing permit and services of a licensed plumber may be required in some areas.
• A water supply line shut-off valve and drain valve must be installed.
• Be sure there is sufficient extra water supply line and drain line for the appliance to be
pulled out for service.
• Drain line should not be piped directly to the sewer system. An air gap of a minimum of
2 vertical inches (5 cm) must be between the end of the drain pipe from the appliance
and the floor drain.
