13
PIPING CONNECTIONS (CONT.)
FREEZE PROTECTION:
The piping will freeze if it is installed in a place exposed to wind and snow even after
heat insulation work, or if the ambient temperature drops below 0 C. In areas where
there is a risk of freezing, wrap a commercially available electric heater around pipes
and valves to keep the heat suciently. If the heat retention is not sucient, anti-freezing
measures will not be eective.
• After completion of the piping, inspect the plumbing for any water leaks from the joints
before installing freeze protection.
• Take preventive measures against freezing in the water supply piping and hot water
supply piping of the tank.
• For commercially available electric heaters, follow the instructions and install the piping
and valves correctly. The thermostat is especially important, so install it correctly.
• Ensure the freeze protection heaters are connected to a 24 hours continuous power
supply.
• It is important to fully explain the use and operation of the freeze protection heater to
the customer.
• When turning off the power, because the unit will not be in use, ALL water must be
drained from the unit and piping.
Heater
Tapes
Figure 8: Details on wrapping thermal insulation around the piping connector
Insulation
Thermal
Insulation
Band
Pipe wrapping Connection wrapping
Figure: Insulation Locations
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