NTI TFTN285 - Page 49

TFTN 085-199 Installation and Operation Manual
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Figure 10-4 Plumbing Schematic – CH Zone Valves & Upstream IWH (Option B)
NOTES:
1. For ZONE 1-3 to output 24VAC (like in this example), jumper ZONE INPUT to R (24V)
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 Sensor Configuration option Auxiliary Sensor 1 (24.6.1) = System Sensor.
4. If application uses a System Sensor, it will be necessary to set DHW Setup option DHW Mode = Upstream IWH (Tank Sensor or
Aquastat); otherwise it can remain set as Downstream IWH (Tank Sensor or Aquastat).
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