DHW METHODS HeatNet Control V3
Page 46
DHW Method 4b: Space Heating with DHW Override of Setpoint on MASTER,
using a DHW 10K Tank Sensor
Figure 37 Example: DHW Method 4b: Space Heating with DHW Override of Setpoint on MASTER, using a DHW Sensor,
Primary Secondary, Reverse Return.
DHW METHOD 4b: Space Heating with DHW Override of Setpoint on MASTER, using a DHW Sensor, Primary
Secondary, Reverse Return
In DHW METHOD 4b, the MASTER’s Heat Demand input enables space heating by energizing the system pump and
maintaining the Heating Setpoint at the MASTER’s System Header Sensor. The MASTER’s OR OVR input is jumped to enable
DHW heating using the DHW tank sensor. When the DHW tank temperature drops, a DHW heat demand is generated, and the
system loop temperature is overridden with the DHW Setpoint. They system pump continues to run, and the DHW pump is
enabled to supply heat to the tanks until the DHW tank is satisfied.
Boilers are staged to meet the active setpoint based on their runtime, and each boiler will enable its local pump when it is running.
The MASTER modulates the boilers in order to maintain the active setpoint.
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