System Set-Up
Installation Manual 59
ENGLISH
• Function Code 2A : Miscellaneous setting
- Value #1 of Function Code 2A : determine electric heater and sanitary tank heater on and off.
- Value #2 of Function Code 2A : not used.
- Example : If Value #1 is set as ‘0’, then electric heater and sanitary tank heater are on and off
according to control logic. If Value #1 is set as ‘1’, then electric heater is never turned on and
only water heater is on and off according to control logic.
• Function Code 2B : Sanitary water heating timers
Determine following time duration : operation time of sanitary tank heating, stop time of sanitary
tank heating, and delay time of sanitary tank heater operating.
- Value #1 of Function Code 2B : This time duration defines how long time sanitary tank heating
can be continued.
- Value #2 of Function Code 2B : This time duration defines how long time sanitary tank heating
can be stopped. It is also regarded as time gap between sanitary tank heating cycle.
- Value #3 of Function Code 2B : This time duration defines how long time sanitary tank heater will
not be turned on in sanitary water heating operation.
- Example of timing chart :
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