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9.10.Connect the 10-inch diameter uninsulated return airflex duct to the return air starting collar installed inStep 3. Secure the duct to the collar assembly usingthe duct ties provided.Determine the most direct and shortest length of ductto be used to connect the 10-inch diameteruninsulated return air flex duct to the 10 inchdiameter collar installed in Step 6. Cut a small slitthrough the 10-inch diameter uninsulated return airflex duct directly above the 10-inch diameter collarassembly and route the thermostat extension cablethrough the slit in the duct. Cut off any excess ductand attach duct to collar using the duct ties provided.Seal the duct where the thermostat cable exits with aquality duct tape.11.Plug remaining end of cable to the air conditionersthermostat 4-pin connector.12.Attach the 7/8 inch ID condensate drain hose to thedrain pan on the air conditioner and secure with thehose clamp provided.DANGER - SHOCK HAZARDDo not drill any openings into this air conditioner. Whenattaching any collars, ducts or adapters directly to the airconditioner, use only the pilot holes already provided.Drilling new openings and inserting screws may damageeither the refrigeration circuit or electrical wiring, causingpossible equipment damage, personal injury or death.7. ALTERNATE UNIT INSTALLATIONRefer to Figure 4:1.2.The air conditioner draws topside air to cool thecondensing coil. The air is drawn in from the end ofthe air conditioner, across the condensing coil, anddischarged through the discharge opening. Toprovide adequate condensing airflow, the installermust adhere to the following guidelines: The air path to the condensing coil should beas direct and non-restrictive as possible. Do not block or restrict the dischargeopening. Ensure that there are no panels or structuralmembers that cause the condenser dischargeair to be recirculated into the condenserreturn air.Remove and discard the plate and styrofoam adapterfrom the desired supply air outlet (top or end).Attach the 10-inch diameter collar assembly using theexisting screws supplied on top of the air conditioner.3.Mount the 10-inch diameter starting collar to thereturn air inlet by crimping the existing tabs.4.Mount the air conditioner using the four (4) shippingbrackets or use band or brackets of your own. Ifusing a condensate evaporator with the airconditioner, elevate the air conditioner 4-5 inches toensure proper drainage of condensate from the airconditioner drain pan to the evaporator.5.10-inch collar assembly using two (2) sheet metalscrews.Mount the thermostat to the thermostat mountingbracket using the screws provided with thethermostat. Connect extension cable to thermostatcable. Attach thermostat with mounting bracket to a66.Cut a 10 1/8 inch square opening in the cab top as faras possible from the intended location of the supplyair flex duct into the cab. Position 10-inch diametercollar assembly with the thermostat/bracket over theopening. Fasten the collar to the cab top with rivetsor screws. Using quality duct tape, seal the seamsaround the perimeter of the collar assembly.7.Install one (1) supply air distribution diffuser in thecab in an area as far as possible from the return air10-inch diameter collar assembly installed in Step 6.Air from the diffuser should have a clear path into theconditioned cab. The diffuser used is to beprovided by the installer and should be capable ofusing the 10-inch diameter insulated supply air flexduct. It is also good practice to mount the diffuseraway from any heat producing devices such as lights,fixtures, etc.8.Cut a 14-inch diameter hole in the cab top for the10-inch diameter insulated supply air flex duct to passthrough. Connect duct to top of diffuser and to thecollar assembly installed in Step 2. Ensure that themost direct and shortest length of duct is used. Cutoff any excess. Secure the duct at the diffuser andcollar assembly using the duct ties provided.9.Connect the 10-inch diameter uninsulated return airflex duct to the return air starting collar installed inStep 3. Secure the duct to the collar assembly usingthe duct ties provided.10.Determine the most direct and shortest length of ductto be used to connect the 10-inch diameteruninsulated return air flex duct to the 10-inchdiameter collar assembly installed in Step 6. Cut a

small slit through the 10-inch diameter uninsulatedreturn air flex duct directly above the 10-inchdiameter collar assembly and route thethermostat extension cable through the slitin the duct. Cut off any excess duct andattach the duct to the collar using the ductties provided. Seal the duct where thethermostat cable exits with a quality ducttape.11.Plug the remaining end of the cable into the airconditioners thermostat 4-pin connector.12.Attach the 7/8 inch ID condensate drain hose to thedrain pan on the air conditioner and secure with hoseclamp provided.1.2.3.4.5.Optional Supply Air (Top) OutletSupply Air (End) Outlet With 10" Dia. Insulated Supply Air Flex DuctSupply Air Distribution Diffuser By Installer10" Dia. Uninsulated Return Air Flex Duct Connected To 10" Dia. AssembliesThermostat With Mounting BracketFIGURE 48. INSTALLATION NOTESThe LiftAire Series of air conditioners are specificallydesigned and constructed for use on new elevator installations,modernizations and retrofits of existing elevator cabs. Theyare provided with all the materials needed to properly cooland/or heat an elevator cab. To ensure maximum efficiencyand operation, the following guidelines should be adhered to:1.type of operation you require. When thermostat isinstalled in the cab, it must be able to sense cabtemperature to operate properly. If placed within thefixture area of the cab, there must be a perforatedcover to allow cab air access to the thermostat.Locating the thermostat anywhere else affects theproper operation of the LiftAire unit and cooling ofthe elevator cab as designed.Supply and return registers in the cab should notrestrict airflow into and out of the cab. Anyresistance of the airflow will limit the effectiveness ofthe unit and create wind noise. The return air andsupply air registers should be as far away from oneanother as possible to ensure proper air circulation inthe cab and back to the air conditioner.2.While the installation kit provides a sufficient amountof supply and return air flexible duct, in order to limitairflow resistance, all duct connections should bethe most direct and the shortest possible. Cut anyextra flexible duct not required, connect flexible ductper previous installation instructions and discard anyextra material.3.Ensure that the thermostat is installed in thereturn duct or the cab. If using the standardthermostat, check that the temperature and operationsettings are correct. If using the automaticthermostat, make sure the unit is programmed for the4.7If you are retrofitting an existing cab, it may not benecessary to use the fan supplied in the originalcab. The LiftAire air conditioner has a fan that willrun continuously with proper settings of thethermostat. If you allow the cab fan to operate duringnormal conditions you will bring hot, cold or humidhoistway air into the cab, thereby defeating thepurpose of the air conditioner and its effectiveness.If it is permitted, remove the original fan to preventwarm hoistway air from entering the cab duringascent and descent of the elevator. If necessary, youcan use he original fan’s opening for the return airregister, provided it has 79 square inches of open areaand is far enough away from the supply air register toensure proper recirculation of the cool air. If usingthe LiftAire on a new installation, a cab fan isprobably not required. If a fan is required or in caseof power outage, it is recommended that the fanoperate only during power loss. In addition, the fan

should utilize a spring loaded or powered louver thanopens during fan operation. This preventsunregulated hoistway air from entering the cab duringair conditioner operation.5.All supply and return registers with duct work into thecab must be manufactured and installed to preventany air leaks and losses of the cold supply air fromthe air conditioner and return air back to the airconditioner.6.Never install the condensate evaporator under thereturn or supply air ducts. This can cause wateraccumulation, damage to the ducts and damage to thecab.7.It is the responsibility of the installer to ensure thatthe installation meets any and all building, electricaland other applicable codes.DANGER - SHOCK HAZARDDo not drill any openings into this air conditioner. Whenattaching any collars, ducts or adapters directly to the airconditioner, use only the pilot holes provided. Drilling newopenings or inserting screws may damage either therefrigeration circuit or electrical wiring, causing possibleequipment damage, personal injury or death.9. MAINTENANCE INSTRUCTIONSThe LiftAire Series of air conditioners require very littlemaintenance during normal operating conditions. Thefollowing are general requirements that should be performedevery 4-6 months.1.2.Air filters should be inspected and washed on aregular basis. Clogged filters will produce a loss ofair volume and possibly damage equipment. Do notoperate the unit without a return air filter. The filtersare reusable after being washed.3.Inspect and clean the condensate drain pan. Ensurethat the drain hole and hose are clear of debris toallow any condensate to properly drain.4.If a condensate evaporator is used, inspect to ensurethere is no debris on the guard or in the evaporatorpan. Ensure drain hole and hose are clear of debris.5.If an automatic thermostat is used, check the LCDdisplay and observe if the word “BATTERY” isflashing. If it is displayed, the “AA” alkalinebatteries are low and should be replaced. Seethermostat operating manual for battery replacementinstructions.Evaporator and condenser coils should be inspectedand, if dirty, cleaned on a regular basis. Remove byhand any paper or debris that might have collected onthe coils and blow compressed air through the coils.This should not have to be done very often unless theshaftway and installation are in a very dirtyenvironment.10. 115 (240) VOLT AC ELECTRICAL WIRINGWARNING - SHOCK HAZARD3.To prevent the possibility of severe personal injury orequipment damage due to electrical shock, always by surethe electrical power is disconnected or off before beginninginstallation.1.Power supply wire size should be determined percode and losses for long cable runs should be takeninto account to insure the proper voltage to the airconditioner at unit startup amperage.2.This air conditioner contains a compressorrefrigeration system and requires power from a 115(240) volt electrical circuit. The circuit connects toterminal lugs inside the unit.8High Voltage Routing Specifications - When routingthe high voltage supply wiring, the followingguidelines must be followed: High voltage wiring must be routed throughthe separate opening in the outer cabinet ofthe air conditioner. This opening is shownon Figure 1 as Field Wiring Line VoltageAccess. It is a 7/8 inch diameter opening for½ inch conduit. Do not allow excess wiring to contact theelectrical terminals or allow sharp screwends and edging that can damage the wireinsulation.

4.5.After connecting ground wire to groundinglug, verify the grounding wire cannot comeinto contact with any high voltage terminals.6.This unit is equipped with high and low pressureswitches to protect against fan failure and refrigerantloss. If either activates, the unit will lock out untilservice personnel inspect and repair any p

The LiftAire II Elevator Air Conditioner is the only cost-efficient alternative for first class comfort control in today’s elevators. The lightweight, packaged unit mounts on top of the elevator and is supplied with