Carrier 48SX user manual

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48SS
48SX
Combination Gas Heating/Electric Cooling Units
AGuide To Operating and Maintaining Your
Gas Heating/Electric Cooling Unit
NOTE TO INSTALLER
FOR YOUR SAFETY
This manual should be left with the equipment owner. WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
FOR YOUR SAFETY
• Donottouchanyelectricalswitch;donot
use any phone in your building.
Do not store or use gasoline or other
• Immediatelycallyourgassupplierfrom
flammablevaporsandliquidsinthevicin-
aneighbor’sphone.Fo

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Your combination heating/cooling unit is equipped with anautomaticdirectsparkignitionandpowercombustionblower. Do not attempt to light by hand; personal injury may result. TO LIGHT UNIT BURNER ACCESS PANEL 1. Do not turn off the electrical power to unit without first turning off the gas supply. Fig. 1 — Gas Heating/Electric Cooling Unit (Unit 48SS Shown) 2. Beforeattemptingtostartthegasheatingsection,fa- miliarize yourself with all the procedures that must be followed. Ifyoudonotfollowtheseinstru

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ROUTINE MAINTENANCE AirFilters— Air filter(s) should be checked at least ev- ery 3 or 4 weeks and changed or cleaned whenever it be- Allroutinemaintenanceshouldbehandledbyskilled,ex- comesdirty.Dirtyfiltersproduceexcessivestressontheblower perienced personnel. Your dealer can help you establish a motor and can cause the motor to overheat and shut down. standard procedure. Table 1 indicates the correct filter size for your unit. Refer Foryoursafety,keeptheunitareaclearandfreeofcom- to Fig. 5 to acce

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HeatExchanger— Toensuredependableandefficient heatingoperation,theheatexchangershouldbecheckedby a qualified maintenance person before each heating season, and cleaned when necessary. This checkout should not be attempted by anyone not having the required expertise and equipmenttoproperlydothejob.Checkingand/orcleaning the heat exchanger involves removing the gas controls as- sembly and the flue collector box cover and, when com- pleted,reinstallingthegascontrolsassemblyforproperop- eration.Also,

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STEP 3 STEP 1 STEP 2 STEP 4 STEP 5 STEP 7 STEP 6 STEP 10 STEP 9 STEP 8 Fig.3—To Light Unit 5

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STEP 3 STEP 1 STEP 2 STEP 5 STEP 4 STEP 6 STEP 7 Fig.4—To Shut Unit Off 6

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Watch the burner flame to see if it is bright blue. If you observe a suspected malfunction or if the burner flames are not bright blue, call your dealer. 6. Replace burner access panel. UnitPanels— Afterperforminganymaintenanceorserv- ice on the unit, be sure all panels are fastened securely in place to prevent rain from entering unit cabinet and to pre- vent disruption of the correct unit airflow pattern. FILTER ACCESS PANEL REGULAR DEALER MAINTENANCE Fig.5—FilterAccessPanel—VerticalSupplyShown In

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BEFORE YOU CALL FOR SERVICE, NOTE: Before proceeding with the next check, turn OFF CHECK FOR SEVERAL EASILY-SOLVED the gas supply, then the electrical power supply to the unit. PROBLEMS Remove the control access door. If insufficient heating or cooling is suspected: ( )Duringtheheatingseason,checkthecontrolswitchon the internal gas valve. Is it in the ON position? If it is not, ( )Checkforsufficientairflow.Checktheairfilterfordirt. be sure it was not turned off for the purpose of safety. If no Che

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MODEL 48SS WARRANTY 11

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MODEL 48SX WARRANTY Copyright 1998 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 1 4 PC 111 Catalog No. 564-993 Printed in U.S.A. Form 48SS,SX-3SO Pg 12 5-98 Replaces: 48SS,SX-2SO Tab 1a 6a