Pump Connection - Takagi T-M1 Installation Manual And Owner's Manual

Pump Connection

A) Not remove "Store" and "Re-cir" jumper. Normal pump re-circulation control
If "operation switch" of RE20 is ON, "Pump control port" is always turned on. The water in piping is circulated
and temperature is kept constant.
B) Remove "Re-cir" jumper. Instant re-circulation control
If the operation switch of RE20 is ON, when it is not necessary to burn the units, "Pump control port" will be
turned OFF, the time with water temperature near setting temperature in the pipe of heat exchanger, and.
Only when required, "Pump control port" turns ON and a circulation pump is made to operate. (A circulation
pump is turned on for about 1 minute every 30 minutes, and it judges whether working is required.)
According to open air temperature or construction conditions, even if 30 minutes do not pass, "Pump control
port" may turn on.
C) Remove "Store" jumper. Storage tank re-circulation control
If the operation switch of RE20 is turned on, the time with water temperature near setting temperature in a
pipe, and when it is not necessary to burn units, slight flow adjustment valve will be closed compulsorily and
circulation flow rate will be reduced. (A circulation pump is always ON)
Remove "Store" and "Re-cir" jumper. Save energy re-circulation
D)
Although it is the same as that of "Instant re-circulation control", returned water temperature in the pipe is set
to 122˚F. (It is effective only when the set temperature of TM-RE10 is more than 122˚F)
"Store" and "Re-cir" jumper
Firing System: Power on TM-RE20, TM-RE10 will show Number 0000 for 20 to 25 second, and then power on
the each T-M1. Next, the RE-10 will show a default temperature setting of 108F this can be changed with HOT
and COLD button located on the TM-RE10. If you press the ON/OFF button this time, RE10 shows current
TIME that can be changed, refer to the instructions provided with the TM-RE10. After setting of the TIME,
press the ON/OFF button, RE-10 will show current Temperature setting.
:
- 26 -