Step 5—Acoustical Lining and Fibrous Glass Duct• US and CANADA: current edition of SMACNA and NFPA90B as tested by UL Standard 181 for Class I Rigid Air DuctsStep 6—Gas Piping and Gas Pipe Pressure Testing• US: NFGC; chapters 5, 6, 7, and 12 and National PlumbingCodes• CANADA: NSCNGPIC Part 3, 4, 5, A, B, E and H.Step 7—Electrical Connections• US: National Electrical Code (NEC) ANSI/NFPA 70–2002• CANADA: Canadian Electrical Code CSA C22.1ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONSPROCEDUREElectrostatic discharge can affect electronic components.Take precautions during furnace installation and servicing toprotect the furnace electronic control. Precautions will pre-vent electrostatic discharges from personnel and hand toolswhich are held during the procedure. These precautions willhelp to avoid exposing the control to electrostatic dischargeby putting the furnace, the control, and the person at the sameelectrostatic potential.1. Disconnect all power to the furnace. Multiple disconnects maybe required. DO NOT TOUCH THE CONTROL OR ANYWIRE CONNECTED TO THE CONTROL PRIOR TO DIS-CHARGING YOUR BODY’S ELECTROSTATIC CHARGETO GROUND.2. Firmly touch the clean, unpainted, metal surface of the furnacechassis which is close to the control. Tools held in a person’shand during grounding will be satisfactorily discharged.3. After touching the chassis, you may proceed to service thecontrol or connecting wires as long as you do nothing torecharge your body with static electricity (for example; DONOT move or shuffle your feet, do not touch ungroundedobjects, etc.).4. If you touch ungrounded objects (and recharge your body withstatic electricity), firmly touch a clean, unpainted metalsurface of the furnace again before touching control or wires.5. Use this procedure for installed and uninstalled (ungrounded)furnaces.6. Before removing a new control from its container, dischargeyour body’s electrostatic charge to ground to protect thecontrol from damage. If the control is to be installed in afurnace, follow items 1 through 4 before bringing the controlor yourself in contact with the furnace. Put all used and newcontrols into containers before touching ungrounded objects.7. An ESD service kit (available from commercial sources) mayalso be used to prevent ESD damage.LOCATIONStep 1—GeneralThis multipoise furnace is shipped in packaged configuration.Some assembly and modifications are required when used in anyof the four applications shown in Figure 4.NOTE: For high-altitude installations, the high-altitude conver-sion kit MUST be installed at or above 5500 ft above sea level.Obtain high-altitude conversion kit from your area authorizeddistributor.This furnace must:• be installed so the electrical components are protected fromwater.• not be installed directly on any combustible material other thanwood flooring (refer to INTRODUCTION).• be located as close to the chimney/vent and attached to an airdistribution system. Refer to Air Ducts section.• be provided ample space for servicing and cleaning. Alwayscomply with minimum fire protection clearances shown on thefurnace clearance to combustible label.Do not install furnace in a corrosive or contaminated atmo-sphere. Make sure all combustion and circulating air require-ments are met, in addition to all local codes and ordinances.Fig. 3—Return Air TemperatureA02055605→