NTI TFTN - Page 51

TFTN 085-199 Installation and Operation Manual
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Figure 10-6 Plumbing Schematic – CH Zone Pumps & Upstream IWH (Option A)
NOTES:
1. For ZONE 1-3 to output 120VAC (like in this example), jumper ZONE INPUT to 120V
2. CH PUMP and DHW PUMP are each responsible for circulating water through the boiler, so size accordingly (see Table 10.3).
3. If using a System Sensor, set Sensor Configuration option Auxiliary Sensor 1 (24.6.1) = System Sensor.
4. If the application uses a System Sensor, set DHW Setup option DHW Mode = Upstream IWH (Tank Sensor or Aquastat);
otherwise it can be set as Downstream IWH (Tank Sensor or Aquastat).
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