TS-20: DHW circulator not running - Velocity Boiler Works

Press the “Status” button. IS the Supply Temperature and the Setpoint temperature close to the same temperature or the Supply temperature higher than the Setpoint temperature?

Yes No

Back

#H7

Is the boiler water temperature near or above 170F?

Yes No

Back

#H13

Meter the DHW circulator wires for 120Vac. Is there 120Vac available?

Yes No

Back

#H18

Check voltage on the Sage2 control on J4-2 to J4-12. Is 120Vac available?

Yes No

Back

#H25

Check voltage on the Sage2 control on J4-3 to J4-12. Is 120Vac available?

Yes No

Back

#H32

Check for 120Vac on the DHW terminals marked L & W. Is there 120Vac.

Yes No

Back

#H38

Is the boiler circulator running? This is the one back left inside the boiler jacket.

Yes No

Back

#P7

Touch the”Status” button. Using the left arrow key to the “Pump Status/Cycles” screen. Does this show the DHW circulator as “On”?

Yes No

Back

#P13

Using the “86” password check the “Pump Setup” menu. Is the DHW pump parameter set to “Primary Piped IWH”?

Back

#P20

Change to “Primary Pipe IWH”. Did the problem resolve?

Yes No

Back

#P27

Replace wiring to the DHW circulator.

Done

Back

#P38

Touch the”Status” button. Using the left arrow key to the “Pump Status/Cycles” screen. Does this show the Boiler circulator as “On”?

Yes No

Back

#W7

Use the “X” in the upper right hand corner of the display go back to the Home Screen. Using the “Adjust ” button and the “86” password check the “Pump Setup” menu. Is the boiler pump parameter set to “Any Demand”?

Yes No

Back

#W13

Adjust the Boiler Pump parameter to “Any Demand”. Did this resolve the problem?

Yes No

Back

#W20

Check for 120Vac at the boiler circulator. The left side panel comes off the K2-WT for service to the circulator. Is there 120Vac available.

Yes No

Back

#AD7

Unplug the L1 harness. Test the boiler side of the plug for 120Vac. This is located near the circulator. Is 120Vac present?