131007514. For thin walls (1/2" or less), insert red key into wall anchor. Push red key to“pop” open anchor wings.IMPORTANT: Do not hammer key!For thick walls (over 1/2" thick) or solid walls, do not pop open wings.Figure 10 - Popping Open Anchor Wings For Thin Walls5. Place mounting bracket onto wall. Line up last hole on each end of bracket withwall anchors.6. Insert mounting screws through bracket and into wall anchors.7. Tighten screws until mounting bracket is firmly fastened to wall.Placing Heater On Mounting Bracket1. Locate two horizontal slots on back panel of heater.2. Place heater onto mounting bracket. Slide horizontal slots onto stand-out tabs onmounting bracket.Mounting Bracket(attached to wall)Installing Bottom Mounting Screws1. Locate two bottom mounting holes. These holes are near bottom on back panelof heater (see Figure 12).2. Mark screw locations on wall.3. Remove heater from mounting bracket.4. If installing bottom mounting screws into hollow or solid wall, install wallanchors. Follow steps 1 through 4 under Attaching To Wall Anchor Method,page 12.If installing bottom mounting screw into wall stud, drill holes at marked loca-tions using 9/64" drill bit.5. Replace heater onto mounting bracket.6. Place spacers between bottom mounting holes and wall anchor or drilled hole.7. Hold spacer in place with one hand. With other hand, insert mounting screwthrough bottom mounting hole and spacer. Place tip of screw in opening of wallanchor or drilled hole.8. Tighten both screws until heater is firmly secured to wall. Do not over tighten.Note: Do not replace front panel at this time. Replace front panel after makinggas connections and checking for leaks (see pages 14-16).Stand-Out TabHorizontal SlotsINSTALLINGTO WALLContinuedFigure 11 - Mounting Heater Onto Mounting BracketFigure 12 - Installing Bottom Mounting Screws