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4. System Design
Heater installation example
Use an insulation material that
can withstand the temperature
of 212°F (100°C) and higher.
Recommended material:
Glass wool, rock wool
Pipe size and insulation thickness
Pipe size
Insulation thickness [in. (mm)]
1B (25A)
1-1/4B (32A)
* 3-way valve installation
Please connect 3-way valve on the lower part of the storage tank except when the unit is in operation.
Anti-freezing operation will keep the water in the tank circulated and water storage tanks can become thermally stratified.
MEES22K030
Heater
Piping
Heater
Tape
Piping
250 mm
Heat insulator
(9-7/8 in.)
1-3/16 (30)
1-5/8 (40)
3-way valve
(field supply)
Check outside temperature
+ 25°C (45°F) is ensured.
: Anti-freezing operation
Residual running of the pump
: Hot water storage operation
34
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