Installation and Operation Manual
TFTN 085-199
52
Figure 10-7 Plumbing Schematic
–
CH Zone Pumps & Upstream IWH (Option B)
NOTES:
1.
For
ZONE 1-3
to output 120VAC (like in this example), jumper
ZONE INPUT
to
120V
2.
The BOILER PUMP is responsible for circulating water through the boiler, so size accordingly (see Table 10.3).
3.
If using a System Sensor, set
option Auxiliary Sensor 1 (24.6.1) = System Sensor.
4.
If the application uses a System Sensor, set
option DHW Mode = Upstream IWH (Tank Sensor or Aquastat);
otherwise it can be set as Downstream IWH (Tank Sensor or Aquastat).
5.
To prevent zone pumps from post-circulating during DHW demands, set
option Zone Outputs Overrun
During DHW (7.2.9) = Off.
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