Toshiba HWS-455H-E Installation Manual page 7

• Installation work must be performed following the instructions in this installation
manual. Improper installation may cause water leakage, electrical shock or fi re.
Check the following items before operating the unit.
- Be sure that the pipe connection is well placed and there are no leaks.
- Check that the service valve is open. If the service valve is closed, it
may cause overpressure and result in compressor damage. At the same
time, if there is a leak in the connection part, it may cause air suction and
overpressure, resulting burst or injury.
• In pump down operations, ensure to perform the following procedures.
- Do not inject air into the refrigeration cycle.
- Be sure to close both service valves and stop the compressor before removing
the refrigerant pipe. If removing the refrigerant pipe while the compressor is
operating with the service valves opened, it may cause to air absorbed and
abnormal high pressure inside the refrigeration cycle and resulting burst or
injury.
• Do not modify the power cable, connect the cable midway, or use a multiple
outlet extension cable. Doing so may cause contact failure, insulation failure, or
excess current, resulting in fi re or electrical shock.
• Do not use any refrigerant different from the one specifi ed for complement or
replacement. Otherwise, abnormally high pressure may be generated in the
refrigeration cycle, which may result in a failure or explosion of the product or an
injury to your body.
• Be sure to comply with local regulations/codes when running the wire from the
outdoor unit to the hydro unit. (Size of wire and wiring method etc.)
• Places where iron or other metal dust is present. If iron or other metal dust
adheres to or collects on the interior of the air to water heat pump, it may
spontaneously combust and start a fi re.
• If you detect any damage, do not install the unit. Contact your supplying dealer
immediately.
• Never modify this unit by removing any of the safety guards.
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