ICP 9MPT Service Manual

Also see for 9MPT Series: User's information manual User's information manual Installation insrtuctions Installation insrtuctions

ICP 9MPT Service Manual Manual pdf 4 page image

Two- Stage Multi Position FurnaceService Manual2440 08 2002 021. INTRODUCTIONThis service manual is designed to be used in conjunctionwith the installation manual and/or technical support manualprovided with each furnace.These furnaces represent the very latest in high efficiencygas furnace technology. Consequently, they incorporate theuse of certain controls that contain highly sophisticated elec-tronic components which are not user serviceable. there-fore, it is essential that only competent, qualified, servicepersonnel attempt to install, service, or maintain this prod-uct.This Service manual was written to assist the professionalHVAC service technician to quickly and accurately diagnoseand repair any malfunction of this product.This service manual covers several different models in two(2) families of our new multi--position furnaces; VariableSpeed (D.C.-- Blower Motor) models in the Condensing fur-nace family, and 2 speed (P.S.C.--Blower Motor) models inboth the Condensing and Non--Condensing furnace families.The overall operation of all of these models and families isessentially the same, with the exception of the Blower Motor,and/or certain control functions which may be unique to aparticular model and/or family.This manual, therefore, will deal with all subjects in a generalnature (I.E. all text will pertain to all models) unless that sub-ject is unique to a particular model or family, in which caseit will be so indicated.Throughout the manual references may be made to ìVARI-ABLE SPEED MODELSî as well as ìTWO SPEED MOD-ELSî. GENERALLY, the distinction between these twogroups is based on a difference in the type of Blower Motorused. These may not be the only differences, however,and the differences may vary from model to model within aparticular family or series.It will be necessary then for you to accurately identify theunit you are servicing, so you may be certain of a properdiagnosis and repair. (See Unit Identification, Page 3)The information contained in this manual isintended for use by a qualified service technicianwho is familiar with the safety procedures requiredin installation and repair and who is equipped withthe proper tools and test instruments.Installation or repairs made by the unqualifiedpersons can result in hazards subjecting theunqualified person making such repairs to the risk ofinjury or electrical shock which can be serious, oreven fatal not only to them, but also to persons beingserved by the equipment.If you install or perform service on equipment, youmust assume responsibility for any bodily injury orproperty damage which may result to you or others.We will not be responsible for any injury or propertydamage arising from improper installation, serviceand/or service procedures.!2. UNIT IDENTIFICATIONThe unitís rating plate contains important information for theservice technician. It also lists the complete Model Manufac-turing and Serial Numbers.These complete numbers are required to obtain correct re-placement parts (example, in certain model families a unithaving a MARKET REVISION of ìCî is likely to be equippedwith one or more different components.MODEL NUMBER IDENTIFICATION GUIDE* 9 M P T 0 75 B 1 2 A 1Brand Identifier Engineering Rev.T = Tempstar N = Neture Denotes minor changesC = Comfortmaker/Keeprite Marketing DigitH = Heil/Arcoaire X = Evaluation Denotes minor changeCooling AirflowBrand Identifier 08 = 800 CFM8 = Non--Condensing, 80+% Gas Furnace 12 = 1200 CFM9 = Condensing, 90+% Gas Furnace 14 = 1400 CFMInstallation Configuration 16 = 1600 CFMUP = Upflow DN = Downflow UH = Upflow/Horizontal 20 = 2000 CFMHZ = Horizontal DH = Downflow/Horizontal Cabinet WidthMP = Multiposition, Upflow/Downflow/Horizontal B = 15.5² WideMajor Design Feature F = 19.1² Wide1 = One (Single) Pipe L= Low NOx T = Two Stage J = 22.8² Wide2 = Two Pipe N = Single Stage V = Variable Speed L = 24.5² WideD = 1 or 2 Pipe P = PVC Vent Input (Nominal MBTUH)