Bryant 355CAV Instruction Manual Page 1

Installation InstructionsPLUS 95S -- MODEL 355CAVDIRECT--VENT 4--WAY MULTIPOISECONDENSING GAS FURNACEWITH PERFECT SENS ET PERF ECT HUMIDITYTSERIES ANO

10PLUGCAPCOLLECTOR BOX DRAIN TUBE (BLUE & WHITE STRIPED)INDUCER HOUSING (MOLDED) DRAIN TUBE (VIOLET)COLLECTOR BOX TUBE (PINK)COLLECTOR BOX DRAIN T

11b. Remove and discard UPPER (molded) inducer housingdrain tubewhichwas previously connected tocondensatetrap.CAP PLUGCOLLECTOR BOX DRAIN TUBE (BLUE

12COMBUSTION – AIRINTAKEVENTMANUALSHUTOFFGAS VALVESEDIMENTTRAPCONDENSATETRAPDRAINACCESS OPENINGFOR TRAP30″ MINWORK AREAA 12-IN. MIN HORIZONTAL

131. Disconnect collector box pressure tube (pink label)attached to High Pressure Switch.2. Use smaller diameter tube (factory--suppled in loose parsb

14Condensate Trap TubingNOTE: See Fig. 14 or tube routing label on main furnace doorto check for proper connections.1. Collector Box DrainTubea. Remov

15FRONTBACKFRONTBACKA93043Fig. 16 -- Prohibit Installation on BackUNIT DAMAGE HAZARDThis gas furnace may be used for construction heatprovided that

16HazardousLocationsFIRE, EXPLOSION, INJURY OR DEATHHAZARDImproper location or inadequate protection could result infire or explosion.When furnace is

17PLENUMOPENINGCAB DFLOOROPENINGA96283Fig. 19 -- Floor and Plenum Opening Dimensions(OR OTHER MANUFACTURERSCOIL CASING WHEN USED)FURNACECOMBUSTIBLEFL

18NOTES:ANGLEIRON OREQUIVALENT(B)(A) ROD LOCATIONUSING DIMPLELOCATORS(SEE DIMENSIONALDWG FORLOCATIONS)13/16-IN. MAXALTERNATE SUPPORTLOCATION FROM BACK

19Ta ble 1 – Opening Dimensions (in./mm)FURNACECASINGWIDTHAPPLICATION(APPRO VED FACTORY SUPPLIED CASED COILS AND COIL BOX:CD5, CKR, CAPVP, CARVP, CAPM

2Required Notice for Massachusetts InstallationsIMPORTANTThe Commonwealth of Massachusetts requires compliance with regulation 248 CMR as follows:5.08

20humidifier, or other accessories. All accessories MUST beconnected external to furnace main casing.Return AirConnectionsFIRE HAZARDFailure to follow

21FILTERRETAINERWASHABLEFILTERA93045Fig. 24 -- Filter Installed for Side InletNOTE: Side return -- air openings can ONLY be used in Upflowconfiguratio

22BOTTOMCLOSUREPANELFRONT FILLERPANELA93047Fig. 26 -- Removing Bottom Closure PanelUNIONSEDIMENTTRAPMANUALSHUTOFFVALVE(REQUIRED)GASSUPPLYA93324Fig. 27

23Table 3 – Maximum Capacity of Pipe*NOMINALIRONPIPESIZE(IN.)INTERNALDIAMETER(IN.)LENGTH OF PIPE (FT/M)10/3.020/6.130/9.140/12.250/15.21/2 0.622 175 1

24115-V FIELD-SUPPLIEDDISCONNECTSWITCH115-VSINGLEPHASEAUXILIARYJ-BOXFURNACECONTROLCENTERTWO WIRE24-VTERMINALBLOCKTHREE-WIREHEATINGONLYFIVEWIRE NOTE

25Factory Installed J--BoxLocationInstall power entry hole filler plugs (factory--supplied in looseparts bag) in unused power entry holes. (See Fig. 3

26Removal of Existing Furnaces from Common VentSystemsWhen an existing Category I furnace is removed or replaced, theoriginal venting system may no lo

27Table 5 – Approved Combustion-- Air and Vent Pipe, Fitting and Cement MaterialsASTMSPECIFICATION MATERIAL PIPE FITTINGSSOLVENTCEMENTDESCRIPTION(MARK

2824-V THERMOSTAT TERMINALS PL2 – HOT SURFACE IGNITER & INDUCER MOTOR CONNECTOR 115-VAC (L2) NEUTRAL CONNECTIONS 115-VAC (L1) LINE VOLTAGE CONNE

2912 inches (30 cm) for applieances >10,000 Btuh(3 kW)and < 100,000 Btuh(30kW), 36 inches (91cm) for appliances > 100,000 Btuh(30kW) A06675Fi

3SAFETY CONSIDERATIONSFURNACE RELIABILITY HAZARDImproper installation or misapplication of furnace mayrequire excessive servicing or cause premature c

30A05013Fig. 35 -- Ventilated Combustion Air Vent Termination Clearance355CAV

31At least 36 in.18 in. maximumVertical separationbetween combustionair and vent8 3/4 in. for 3 in. kit6 3/4 in. for 2 in. kitRoof Te rmination (Prefe

32FURNACEPIPE DIAMETERTRANSITION INVERTICAL SECTIONNOT INHORIZONTALSECTIONA93034Fig. 38 -- Combustion Air and Vent Pipe TransitionLocation and Elbow C

33COMBUSTIONAIR PIPEBURNERBOXCOMBUSTION AIRINTAKE HOUSING3/8" ID TUBETRAPTO OPENDRAIN3/16"DRILL4″MINA93035Fig. 40 -- Intake Housing Plug Fit

34Crawlspace terminations require the open end of the combustionair intake pipe to point downward. Maintain 3 inches (76.2mm)of clearance below the fl

35(304.8mm)minimumA06672Fig. 41 -- Attic Termination(304.8 mm)minimum(76.2 mm)minimumA06673Fig. 42 -- Crawlspace Termination355CAV

36(304.8mm)minimum3” (76.2mm) minimumA06674Fig. 43 -- Crawlspace Termination355CAV

37HORIZONTAL TO ROOF HORIZONTAL TO SIDEWALLVERTICAL TO SIDEWALLVERTICAL TO ROOFVENT PIPECOMBUSTION-AIR PIPE COMBUSTION-AIR PIPEVENT PIPECOMBUSTION-AIR

38Vent Termination Kit (Direct Vent/2--Pipe SystemOnly)NOTE: Always refer to the instructions in termination kit for thelatest version.Combustion air

39Table 6 – Maximum Allowable Exposed Vent Pipe Length (Ft / M) with Insulation inWinter Design Temperature Ambient*UNIT SIZEWINTER DESIGN MAXIMUM PIP

4NOTES: 1. Minimum return-air openings at furnace, based on metal duct. If flex duct is used,see flex duct manufacturer’s recommendations for equivale

40Table 7 – Maximum Allowable Pipe Length (Ft / M)Direct Vent (2--Pipe Only)NUMBER OF 90 _ ELBOWSALTITUDEUNIT SIZE(BTUH)TerminationTypePipe Dia(IN.)*1

41Table 9 — Maximum Allowable Pipe Length (Ft / M) (Continued)ALTITUDEUNIT SIZE(BTUH)Direct Vent (2--Pipe Only)NUMBER OF 90_ ELBOWSTerminationTypePipe

42Table 8 – Vent Termination Kit for Direct Vent / 2--Pipe SystemDIRECT VENT (2 PIPE) TERMINATIONKITTERMINATION SYSTEMDIAMETER OF COMBUSTION AIRAND VE

432. Locate heat tape between sides of condensate trap back.(See Fig. 46.)3. Use wire ties to secure heat tape in place. W ire ties can bepositioned i

442. Locate setup switch SW4 on furnace control. (See Fig.33.)3. See Table 5 for setup switch description. (See Fig. 40 andFig. 49.)4. Replace main fu

45A06677Fig. 49 -- Wiring Diagram355CAV

46A99118Fig. 50 -- Inducer Housing Drain TubeA01050Fig. 51 -- Filling Condensate TrapTa ble 9 – Furnace Setup Switch DescriptionSETUP SWITCHNO.SWITCH

47Purge GasLinesIf not previously done, purge the lines after all connections havebeen made and check for leaks.FIRE AND EXPLOSION HAZARDFailure to fo

48and operate the inducer motor IDM at full speed untilflame is no longer proved.5. Inducer Speed Change — If the cycle starts inmediumheat, the furna

49The wall thermostat ”calls for heat”, closing the R to W1 circuitfor medium--heat or closing the R to W1--and--W2 circuits forhigh--heat. The furnac

5debris from all HVAC system components afterconstruction is completed.S After construction is complete, verify furnace operatingconditions including

502. High cooling –WhentheRtoG--andY/Y2circuitisclosed and there is a demand for dehumidification, thefurnace blower motor BLWM will drop the blower a

51A06678Fig. 52 -- Step -- Modulating Furnace with Single-- Speed AirConditioningA06679Fig. 53 -- Step Modulating Furnace with Two --Speed AirConditio

52A06682Fig. 56 -- Step Modulating Furnace with Single-- Speed HeatPumpA06683Fig. 57 -- Dual Fuel thermostat with Step--ModulatingFurnace and Two--Spe

53NOTE: Reference Fig. 52--59:1. Heat pump MUST have a high pressure switch for dualfuel applications.2. Refer to outdoor equipment Installation Instr

54NOTE: DO NOT set medium--heat manifold pressure less than1.3-- in. wc or more than 1.7--in. wc for natural gas.UNIT DAMAGE HAZARDFailure to follow t

55Table 10 – Orifice Size* and Manifold Pressures for Gas Input Rate(Tabulated Data Based on 20,000 BTUH High Heat / 13,000 Btuh Med-- Heat / 8,000 Bt

56Orifice Size* and Manifold Pressures for Gas Input Rate(Tabulated Data Based on 20,000 BTUH High Heat / 13,000 Btuh Med-- Heat / 8,000 Btuh Low -- H

57UNIT DAMAGE HAZARDFailure to follow this caution may result in componentdamage.DO NOT redrill orifices. Improper drilling (burrs,out--of-- round hol

58Table12–GasRatecuFt/HrSECONDS SIZE OF T EST DIAL SECONDS SIZE OF TEST DIALFOR 1 1 2 5 FOR 1 1 2 5REVOLUTION cu ft cu ft cu ft REVOLUTION cu ft cu ft

59NOTE: When using an electronic thermostat, set cycle rate for 3cycles per hr .3. Return setup switch SW1--2 to OFF position and replacethermostat on

6Installer Packet Includes:Installation, Start---up, and Operating InstructionsService and Maintenance InstructionsUser’s Information ManualWarranty C

60CHECKLIST — INSTALLATIONLOAD CALCULATION________________ Heating Load (Btuh) Condensate Drain________________ Cooling Load (Btuh) ________________ U

7S The use of copper tubing for gas piping is not approvedby the state of Massachusetts.ElectricalConnectionsS US: National Electrical Code (NEC) ANSI

81/2 ODINDUCER HOUSINGDRAIN CONNECTION1/4 ODCOLLECTOR BOX TOTRAP RELIEF PORT5/8 ODCOLLECTOR BOXDRAIN CONNECTION1/2 IN. PVC OR CPVCSCREW HOLE FORUPFLOW

9PLUGCAPCOLLECTOR BOX DRAIN TUBE (BLUE & WHITE STRIPED)INDUCER HOUSING (MOLDED) DRAIN TUBE (BEHIND COLLECTOR BOX DRAIN TUBE)COLLECTOR BOX TUBE (PI