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Reinstall upper louver assembly (see Figure 15, page 11) and branch support. Close lower louver door. Valve Cover Shield Switch Plate Screw (see Figure 20). Set the cable bundle between the burner bracket and outer casing, away from the burner. 5. Test to make sure the blower is working properly. 6. Reinstall upper louver assembly (see Figure 15, page 11) and close lower louver. Extension Cord Use extension cord if needed. The cord must have a three-prong, grounding plug and a three-hole recepta