FieldBench
Wiring

Bosch BOVA / IDS

Comm cable + 24V at the AHU

Comm cable + 24V at the AHU

BOVA 2.0 inverter HP. Communicating cable indoor–outdoor. Conventional 24V stat typically at the air handler (Y / B / G / W / C).

Written circuit description only — FieldBench does not redraw maker schematics. Example: R to W closes on a heat call; verify 24V at W1 before you change the IFC.

Open manufacturer PDF

BOVA + AHU

IDS / BOVA outdoor with the matching Bosch air handler.

24V stat at the AHU

Y cool, B heat (Bosch often uses B), G, W aux, C.

  • R24V hot24V
  • CCommon24V
  • YCool24V
  • BHeat — confirm on THIS AHU24V
  • GFan24V
  • WAux24V

BOVA outdoor

Communicating cable to the AHU. Photograph the silk. No furnace IFC universal.

  • COMMIndoor–outdoor comm on the silkData

Landing

  • 24VStat Y/B/G/W/CAHU 24V strip

    ~24 VAC at the air handler

  • DataAHU commBOVA comm

    Data cable. Not thermostat wire logic.

Prove it

  • 24V at the AHU under Y or B.
  • Read the outdoor silk for the comm cable.

Do not

  • Do not apply Mitsubishi S1/S2/S3 or Daikin P1/P2.
  • Do not throw a dual run cap.

24V lives at the AHU. The outdoor is a drive on a comm cable.

Plates on this landing