Rheem Warrior DVX Series Use and Care Manual - Page 8

Installing the water heater. Installation Methods NOTICE: The water heater should not be installed near an air supply containing halogenated hydrocarbons. Inspect shipment. Inspect the water heater for possible shipping damage. Placement of water heater. Locate the water heater as desired, make certain the minimum clearances outlined in this manual are observed. Combustion and ventilation air. Air for combustion and ventilation must not be supplied from occupied spaces of the mobile home. The air inlet must not be obstructed under any circumstances. Outside air is necessary for proper and safe operation of the water heater. Openings for gas vent Co-Axial Roof Jack assembly.- Cut a 7 1/4 in. diameter hole in the ceiling and roof directly above the flue of the water heater. Securing the water heater. Secure the water heater using the provided metal straps. Attach them to the top pan and bottom pan of the water heater then fasten the straps to the adjacent wall on each side. NOTICE: The old roof jack must be replaced with the new co-axial roof jack. Gas vent Co-Axial Roof Jack. The roof jack must be one of the models listed in this manual, and marked as approved by Underwriters Laboratories, Inc. for use on manufactured homes (mobile homes). The installation instructions supplied with each Co-Axial Roof Jack must be observed to obtain the proper roof jack installation. The Gas Vent Roof Jack Assembly has a multi piece telescopic vent connector pipe consisting of an upper, center and lower section that must be pre-adjusted according to the following directions prior to final installation of the roof jack. From the water heater location, measure the distance from the highest point on roof opening to the top of the water heater. Select correct size Co-Axial Roof Jack from Co-Axial Roof Jack Sizing Guide on Page 9, Dimension X. Remove the Co-Axial Roof Jack from its carton, and extend the center section of the inner most pipe to its maximum length by grasping the pipe and sliding the center section of pipe downward. Then extend the the lower section of the inner pipe in the same manner to its full extension. Silicone rubber sealing bands are provided and must be pulled down over the joints between the tubes to ensure a leak proof seal. Apply a non-hardening mastic on the roof around the previously cut hole to form a weather tight seal with the roof flange of the Co-Axial Roof Jack Assembly. Insert the Co-Axial Roof Jack through the opening in roof from above, and fasten the flashing to the roof using the pre-punched holes in the flashing. The roof flange adjusts to accommodate installation on a pitched roof, (maximum allowable pitch is 8-12). For roof pitches greater that 8-12 an alternate roof jack can be purchased. Apply additional non-hardening mastic as required to complete the weather seal. To complete the assembly of the Co-Axial Roof Jack Inner Pipe installation: Apply silicone sealant around the outside of the water heater flue pipe, then extend the lower section of the vent connector pipe by grasping the center section of pipe, ensuring that the silicone rubber seal remains in position over the joint, press it firmly downward until seated over the flue pipe protruding inside the water heater's top plenum. An improper seal can cause nuisance pilot outages. Secure the inner pipe to the top pan of the water heater by inserting the two screws through the brackets on each side. To complete the assembly of the Co-Axial Roof Jack Outer Pipe installation: Extend the upper section down and over the lower section of the vent connector pipe by grasping the center section of pipe and pull downward, ensuring that the silicone rubber seal remains in position over the joint, press it firmly downward until seated outside the lip of the top plenum Secure on each side with the two screws provided. Apply silicone sealant around the edge of the top plenum and outer pipe connection to ensure a good seal. An improper seal can cause nuisance pilot outages. 8