iWorx® PSU1
22 505-012, Effective: August 10, 2012
© 2012 Taco Electronic Solutions, Inc.
Inputs
The Inputs screen displays the current values of the PSU1’s inputs. These values cannot be changed.
Outputs
The Outputs screen displays the current values of the PSU1’s outputs. These values cannot be changed.
Output Status
Pump 1 Adjust / Pump 2 Adjust
Configuration
This section describes the settings that can be modified.
Name Range Description
Outside Temp -30 to 230 °F (-34.4 to 110 °C) The outside air temperature as
reported by the networked ASM2
Supply Temp -30 to 230 °F (-34.4 to 110 °C) Primary supply water temperature
Return Temp -30 to 230 °F (-34.4 to 110 °C) Return water temperature
Demand Off, On Status of the demand
Flow Switch Off, On Status of the Pump Flow Proof
switch
Delta T 0 to 260 °F (0 to 144.4 °C) Differential temperature between
the supply and return temperature
readings
Name Range Description
Output Status Structure as defined in a table below General pump status
Pump 1 Adjust Structure as defined in a table below Pump 1 commissioning and runtime
Pump 2 Adjust Structure as defined in a table below Pump 2 commissioning and runtime
Pump 1 Modulation 0 to 100% Pump 1 modulation level
Pump 2 Modulation 0 to 100% Pump 2 modulation level
Restarts Left 0 to 4 Number of Auto Flow Recovery
Restarts remaining.
Name Range Description
Pump #1 Off, On Status of pump 1
Pump #2 Off, On Status of pump 2
In Alarm? No, Yes Alarm status
Low Temp Circ Off, On Low temperature circulation status
Flow Recovery Mode Yes, No Is Flow Recovery Mode active?
Name Range Description
Commissioning Auto,
Enabled,
Disabled
Pump commissioning switch state
Runtime 0 to 65535 hours Accumulated pump runtime
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