4.Extend the 3” telescoping pipe to its maximum length. Place the smaller section onto the 3” elbow at least 1 and 1/2 inches (See Figure 9). Drill two holes 180° apart and secure with the two #8 sheet metal screws provided. Apply silicone sealant to the joint.
5.Attach the larger section of the 5” telescoping pipe to the flange on the outer wall plate (See Figure 9). Drill holes 90° apart with a 1/8” drill bit and fasten with four #8 sheet metal screws (provided). Apply silicone sealant to the seam.
6.Extend the 5” telescoping tube to its maximum length. From outside of the building, insert a 5” tube/outer wall plate assembly through the opening in the exterior wall and onto the 5” elbow (See Figure 9). Seat the base of the outer wall plate onto the exterior wall. Apply silicone sealant between the plate and the exterior wall.
| Figure 9: Vertical Installation | |||
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7.Place the 3” tube located in the vent cap into the end of the 3” telescoping tube (See Figure 10). Drill two holes 180° apart with a 1/8” drill bit and secure with two #8 sheet metal screws. Apply sealant to the joint. Seat the cap against outer wall plate with the word “HOT” in an upright position.
8.Secure the vent cap/outer wall plate assembly to the exterior wall with the four 1 and 1/2” screws provided (See Figure 10). Varying wall structures may require a different type of screw anchor. To prevent rain from entering the water heater vent pipe, the 5” tube should be sloped downward towards the wall 1/4” per foot.
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| Figure 10: Vertical Installation |
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9.Position and fasten the inner wall plate to the inside wall using an appropriate fastener for the specific wall construction. Apply silicone sealant between the inner wall plate and the inside wall.
10.Make certain the 5” telescoping pipe has been fully engaged onto the 5 inch elbow. Drill two 1/8” holes 180° apart at the junction of the two joints. Secure with four #8 sheet metal screws and apply silicone sealant to the seams. Make sure all the 5” pipe joints are sealed including the joint to the collar on the water heater’s air supply box (See Figure 9).
Optional Vertical Extension Kit
Installations requiring dimension "A" to be greater than 62.75” (40 Gallon) or 71.00” (50 Gallon) will require the use of the optional vertical extension kit. The maximum height of the "A" dimension cannot exceed 98 inches. If the "A" dimension for your application is less than 98 inches, you will have to cut the 3 and 5 inch pipes in the vertical extension kit to the correct length. For example, if your applicable "A" distance is 80 inches, then 98 inches - 80 inches = 18 inches. Therefore, you will need to cut 18 inches from both the 3 and 5 inch vertical extension pipes. DO NOT CUT THE CRIMPED END OF THE 5 INCH PIPE.
After cutting both the pipes to the proper size, place the 3” vertical extension pipe over the flue pipe reducer on the upper air box and press it firmly downward until seated. Using a level, make sure the extension tube is pointing straight up. Drill 4 holes 90° apart with a 1/8” drill bit and fasten with four #8 sheet metal screws (provided). Apply silicone sealant to the seam.
Place the uncrimped end of the 5 inch extension pipe over the 3 inch extension pipe and seat it onto the collar on the air box. Making sure the 3 inch extension pipe is centered in the 5 inch pipe, drill four holes 90° apart with the 1/8” drill bit and fasten with four #8 sheet metal screws (provided). Apply silicone sealant to the seam. Place the flared end of the 3 inch elbow over the 3 inch extension pipe and press it firmly downward until seated. Drill four holes 90° apart with the 1/8” drill and fasten with four #8 sheet metal screws (provided). Apply silicone sealant to the seam.
Install the 5 inch elbow over the 3 inch elbow and seat it down onto the crimped end of the 5 inch extension pipe. Temporarily place the 5 inch telescoping pipe onto the 5 inch elbow and adjust it to give a 1/4 inch per foot downward slope to the outside wall. Secure the 5 inch elbow to the extension pipe by drilling four holes 90° apart with the 1/8” drill and inserting four #8 sheet metal screws. Apply silicone sealant to the joint. Place the inner wall cover plate over the 5 inch elbow. This plate will be positioned later. Proceed to step 4.