Toyotomi FB-38N(FS) - Manual (Page 13)

13
DIFFERENTIAL SWITCH AND DIP SWITCH
CAUTION: Please consult your dealer on the operation of DIP Switch.
By the Differential Switch on the Main Circuit Board, the temperature of circulation water is
controlled in the range of 2°C differential, 6°C differential, 9°C differential or 12°C differential.
NOTE: If the wide differential is selected, the cycle frequency of ignition and extinguishments of
the Burner will be reduced.
The position of DIP Switch is set to “6°C differential” from factory.
PREVENTING FREEZE UP
In order to prevent any kind of damage or leaks caused by freezing, make sure if the antifreeze
fluid of adequate concentration contains in the circulation water regardless of being used in a
cold region or in a warm or hot region.
- Change the circulation water every 2 years.
LONG TERM INACTIVITY
When leaving the unit unused over a long period of time, disconnect the Power Supply Cord
after turn the unit off by pressing the “POWER SWITCH”.