Operation - electrical, Direct gas burner sequence, Electrical sequence – Greenheck Fan Make-Up Air Unit VSU User Manual

Page 13: Supply fan contact closed, Heat contact closed, Flame safeguard (fsg) sequence, Supply fan contact (s2) closed, Heat contact (s4) closed

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Operation - electrical, Direct gas burner sequence, Electrical sequence | Supply fan contact closed, Heat contact closed, Flame safeguard (fsg) sequence, Supply fan contact (s2) closed, Heat contact (s4) closed | Greenheck Fan Make-Up Air Unit VSU User Manual | Page 13 / 24