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NH — 2. Installation in small room with no ducts and

For the NH.

Procedure

  1. 3. Installation of air inlet and outlet ducts are too
  2. 1. Air inlet to the generating set compartment is
  3. 2. The air seal at the bottom of the unit is not properly
  4. 3. Air discharge opening partially blocked by external
  5. 4. Recirculation of heated air into fresh air inlet.

Source: manual:940-0501_Onan_NH_series_Generator_Major_Service_manual_08-1973.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.