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11 All installations and services must be performed by qualified service personnel. Figure 4 : The vent and air intake elbows must be kept away from bushes, shrubs or any vegetation that may restrict the flow of flue products. It must also be kept clear of any leaves, weeds or other combustible materials. Keep the vent hood clear of snow. Avoid locating the terminals in areas where standing water or condensate drippage may be a problem. VENT TERMINAL LOCATION GUIDELINES In addition to following the requirements outlined by local codes, utilizing the guidelines below when possible in locating the vent terminal will help insure the trouble-free operation of your horizontally vented furnace: • Avoid locating the vent terminal on a wall facing the prevailing winds and wide open areas. • When this is not practical, choose locations that protect the vent from strong winds such as behind a fence or hedge. NOTICE: The vent terminal must be located a sufficient distance from bushes, shrubs, and vegetation so as not to have the flue products restricted or blocked from such vegetation. • In areas with considerable snowfall, it is advisable to locate the vent terminal higher than the minimum 12 in. above the ground as to prevent blockage by snow accumulation or drifting. Measures should be taken to prevent the entry of corrosive chemicals or vapors to the combustion and ventilation air supply. Such chemicals include but are not limited to chlorinated and/or fluorinated hydrocarbons such as found in refrigerants, aerosol propellants, dry cleaning fluids, degreasers and removers. Other harmful compounds may come from bleaches, air fresheners or mastics. Vapors from such products can form acid compounds when burned in a gas flame. The life of the furnace could be reduced should acid compounds form within your furnace. NOTICE: Heat exchanger failure caused from contaminated air will void its limited lifetime warranty. NOTICE: The vent termination and air inlet elbow shall be checked periodically, at least at the start of each heating season, for restriction or blockage from foreign material in the vent pipe or in the air inlet. The air inlet and vent pipe should be cleaned when necessary. E1. SINGLE PIPE (SIDEWALL) VENTING OPTION This furnace may be horizontally vented with a single exhaust pipe. This will be a non-direct vent installation. The same exhaust venting guidelines apply except the exhaust termination will be similar to the air intake of the "2 pipe" direct vent installation. Refer to intake terminal instructions Figure 3 and Figure 5. Termination will consist of one 90° elbow pointed downward. (See figure 2) 12 All installations and services must be performed by qualified service personnel. 13 F. INSTALLATION OF OUTSIDE VENT/AIR INTAKE TERMINATIONS NOTICE: Installation of the outside exhaust and combustion air vents must be performed by a qualified installer or service person in accord with local codes, the National Fuel Gas Code (NFPA 54, ANSI Z223.1 or latest edition) and the sections on venting in this manual. 1. Observing all clearances specified in this manual, cut two 2-3/8” diameter holes in the outside wall for CHX1/CDX1-75 and two 3-1/2” diameter holes for the CHX1/CDX1-100 and 125. 2. Cut two 2” diameter PVC pipes 1-1/2” longer than the depth of the wall. This allows for 3/4” connection on both ends of the pipe. (For 3” PVC pipe, leave 3” for connection). Using PVC pipe cement, cement a PVC elbow or coupler to one end of each pipe. Mark the pipe before inserting into the wall so the elbow orientation can be determined. Also, if a protective shield will be used on the exterior surface of the wall, it should be installed at this time. Glue a coupling or elbow to each pipe, depending on your installation with the PVC pipe cement being careful to maintain the proper orientation of the elbows. Complete the assembly of the outlet and inlet as shown in Figure 5, making sure that the spacing between the inlet and outlet complies with that shown in Figure 3. Figure 5 3. Finish the vent installation by caulking around the two holes where the PVC pipes pass through the wall. 4. An optional vent or intake terminal (stainless steel) screen is available under part no. 320226. Optional Terminations Two optional vent kits are available for vent terminations on horizontal vent applications. The concentric vent kit (part no. 370171) allows for the vent and intake to be installed through one 4.5-inch diameter hole. The side wall vent cap (part no. 370191) is a cover to be installed over the vent and intake pipe as they exit the exterior of the building. These optional kits shall be installed according to the instructions provided with each kit. The locations and clearances are identical to the requirements of the standard vent terminations described in this manual. These vent kits may be used on any size of the CHX1/CDX1 furnace series. All installations and services must be performed by qualified service personnel. 14 ...

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