INSTALLATION MANUAL

167187-UIM-B-0306CATEGORY 1 - 450 F. MAX. VENT TEMP.The venting system must be installed in accordance with Section 5.3,Air for Combustion and Ventilation, of the National Fuel Gas CodeZ223.1/NFPA 54 (latest edition), or Sections 7.2, 7.3 or 7.4 of CSAB149.1, National Gas and Propane Codes (latest edition) or applicableprovisions of the local building code and these instructions.The furnace shall be connected to any type of B, BW or L vent connector,and shall be connected to a factory-built or masonry chimney. Thefurnace shall not be connected to a chimney flue serving a separateappliance designed to burn solid fuel.The furnace rating plate lists the maximum vent gas temperature. Thistemperature must be used to select the appropriate venting materialsand clearances.It is recommended that the appliance is installed in a location where thespace temperature is 32 °F (0°C) or higher. If the appliance is installedin a location where the ambient temperature is below 32 °F (0°C), thecombustion byproducts could condense causing damage to the applianceheat exchanger.IMPORTANT: The “VENT SYSTEM” must be installed as specified inthese instructions for Residential and Modular Homes.This appliance may be common vented with another gas appliance forresidential installations as allowed by the codes and standards listed inthese instructions.Approved Modular Homes must be vented with an approved roof jackand may not be common vented with other appliances.VENTINGCategory I venting consists of vertically venting one or more appliancesin B-vent or masonry chimney (as allowed), using single wall metal pipeor B-vent connectors. Type B-vent system extends in a general verticaldirection and does not contain offsets exceeding 45 degrees. A ventsystem having not more than one 60 degree offset is permitted.The vent system must be attached to the flue collar with a minimum of 2mechanical fasteners such as screws or rivets. See Figure 22.VENTING INTO AN EXISTING CHIMNEYFor Category I installations, the furnace shall be connected to a factorybuilt chimney or vent complying with a recognized standard, or amasonry or concrete chimney lined with a material acceptable to theauthority having jurisdiction. Venting into an unlined masonry chimneyor concrete chimney is prohibited.Whenever possible, B-1 metal pipe should be used for venting. Whereuse of an existing chimney is unavoidable, the following rules must befollowed:1. The masonry chimney must be built and installed in accordancewith nationally recognized building codes or standards and mustbe lined with approved fire clay tile flue liners or other approvedliner material that will resist corrosion, softening, or cracking fromflue gases. THIS FURNACE IS NOT TO BE VENTED INTO ANUNLINED MASONRY CHIMNEY.2. This furnace must be vented into a fire clay tile lined masonrychimney only if a source of dilution air is provided, such as by commonventing with a draft hood equipped water heater. If no sourceof dilution air is available, Type B vent must be used, or masonrychimney vent kit 1CK0603 or 1CK0604 must be used. Refer to theinstructions with the kit to properly apply these masonry chimneykits.3. The chimney must extend at least 3 ft (0.91 m) above the highestpoint where it passes through a roof of a building and at least twofeet higher than any portion of the building with a horizontal distanceof ten feet.4. The chimney must extend at least 5 ft (1.5 m) above the highestequipment draft hood or flue collar.HORIZONTAL SIDEWALL VENTINGFor applications where vertical venting is not possible, the onlyapproved method of horizontal venting is the use of an auxiliary powervent. Approved power venters are Fields Controls Model SWG-4Y orTjernlund Model GPAK-JT. Follow all application and installation detailsprovided by the manufacturer of the power vent. This unit may be horizontallyvented using 4” (10.2 cm) diameter pipe with a minimum lengthof 4.5 feet (1.37 m) and a maximum length of 34.5 feet (10.82 m) withup to 4 elbows.FURNACEFAN ASSISTED FURNACE& WATER HEATERVENTPIPEFIGURE 16: Typical Sidewall Vent ApplicationCELLARWALLOPTIONALSIDEWALLVENT SYSTEM(field supplied)HOTWATERTANKOPTIONALSIDEWALLVENT SYSTEM(field supplied)VENT PIPETOPCOVERBURNERACCESSPANELFAN ASSISTEDFURNACESEXTERIORVENT HOODFURNACEBAROMETRICDAMPERFLUEPIPEFIGURE 17: Typical Sidewall Vent and Termination ConfigurationVENT CLEARANCESIMPORTANT: The vent must be installed with the following minimumclearances as shown in Figure 18, and must comply with local codesand requirements.14 Unitary Products Group