Carrier Condensing gas furnace Istruzioni per gli Interventi

58MVB4-Way MultipoiseVariable-Capacity Condensing Gas FurnaceInstallation, Start-Up, and Operating InstructionsFor Sizes 040—120, Series 100NOTE: This

(b.) Connect tube to condensate trap.(c.) Clamp tube to prevent any condensate leakage.(2.) Condensate Trap Located on Right Side of Casing(a.) Route

CONDENSATE TRAP LOCATIONThe condensate trap must be removed from the factory-installedblower shelf location and relocated in selected application loca

b. Route extended collector box pressure tube to relief portconnection on condensate trap.c. Determine appropriate length, cut, and connect tube.d. Cl

NOTE: The auxiliary junction box (J-box) MUST be relocated toopposite side of furnace casing. (See Fig. 13.) See ElectricalConnection section for J-bo

PRESSURE SWITCH TUBINGOne collector box pressure tube (pink label) is factory connected tothe pressure switch for use when furnace is installed in UPF

UNIT DAMAGE HAZARDThis gas furnace may be used for construction heat providedthat:-The furnace is permanently installed with all electricalwiring, pip

UNIT DAMAGE HAZARDFailure to follow this caution may result in minor property orunit damage.The furnace can operate in the high-heat mode when certain

NON-DIRECT VENT (1-PIPE) APPLICATIONUNIT DAMAGE HAZARDFailure to follow this caution may result in intermittent unitoperation.Do not install furnace i

3. ONE OUTDOOR OPENING requires:a. 1 square inch of free area per 3,000 Btuh (734 mm2/kW)for combined input of all gas appliances in the space perTabl

When combustion air ducts are used, they must be of the samecross sectional area as the free area of the openings to which theyconnect. The minimum di

Check Safety Controls...56Check Primary Limit Control ...

4. Adjust outside nut to provide desired height, and tighten insidenut to secure arrangement.NOTE: Bottom closure must be used when leveling legs are

Table 3—Opening Dimensions (In.)FURNACECASINGWIDTHAPPLICATIONPLENUM OPENING FLOOR OPENINGABCD17-1/2Upflow Applications 16 24-1/8 16-5/8 24-3/4Downflow

RETURN AIR CONNECTIONSFIRE HAZARDFailure to follow this warning could result in fire, personalinjury, or death.Never connect return-air ducts to the b

portion of return-air duct. Bypass humidifier connections shouldbe made at ductwork or coil casing sides exterior to furnace.Step 5—Filter Arrangement

To remove bottom closure panel, perform following:1. Tilt or raise furnace and remove 2 screws holding front fillerpanel. (See Fig. 29.)2. Rotate fron

Step 8—Electrical ConnectionsSee Fig. 32 for field wiring diagram showing typical field 115-vand 24-v wiring. Check all factory and field electrical c

by power supply is sufficient to handle load imposed by thisequipment. Refer to rating plate or Table 6 for equipment electricalspecifications.Make al

SETUP SWITCHES (SW1)The furnace control has 8 setup switches that may be set to meetthe application requirements. Position these setup switches for th

CARBON MONOXIDE POISONING HAZARDFailure to follow the steps outlined below for each applianceconnected to the venting system being placed into operati

Fig. 36—Wiring Diagram A02291LEGENDJUNCTIONTERMINALCONTROL TERMINALFACTORY POWER WIRING (115VAC)FACTORY CONTROL WIRING (24VAC)FIELD CONTROL WIRING (24

Fig. 2—Dimensional DrawingDimensions (In.)UNIT SIZE A D E040-14* 24-1/2* 22-7/8* 23*060-14 17-1/2 15-7/8 16080-14 21 19-3/8 19-1/2080-20 21 19-3/8 19-

Fig. 37—Control CenterA02278FLASH UPGRADE CONNECTOR (FACTORY ONLY) ACRDJ – AIR CONDITIONING RELAY DISABLE JUMPERHUMIDIFIER TERMINAL (24-VAC 0.5 AMP MA

the vent or liner manufacturer’s installation instructions. Care mustbe taken to prevent the exhaust gases from one appliance fromcontaminating the co

Table 8—Direct Vent Termination ClearanceA0500932→

→ Table 9—Other than Direct Vent Termination ClearanceA0501333

2. Reposition combustion air intake housing plug fitting inappropriate unused intake housing connection.3. Install combustion-air pipe grommet (factor

Table 11—Maximum Allowable Pipe Length (Ft)ALTITUDEUNIT SIZE(BTUH)DIRECT VENT (2-PIPE) ONLYNON-DIRECT VENT(1-PIPE) ONLYNUMBER OF 90° ELBOWSTermination

Table 11—Maximum Allowable Pipe Length (Ft) ContinuedALTITUDEUNIT SIZE(BTUH)DIRECT VENT (2-PIPE) ONLYNON-DIRECT VENT(1-PIPE) ONLYNUMBER OF 90° ELBOWST

Table 11—Maximum Allowable Pipe Length (Ft) ContinuedALTITUDEUNIT SIZE(BTUH)DIRECT VENT (2-PIPE) ONLYNON-DIRECT VENT(1-PIPE) ONLYNUMBER OF 90° ELBOWST

The minimum vent pipe length for these furnaces is 5 ft. Short pipelengths (5-8 ft) may discharge condensate droplets. These conden-sate droplets may

12. Slope combustion air piping (if applicable) and vent pipingdownward towards furnace a minimum of 1/4 in. per linear ftwith no sags between hangers

This gas furnace may be used for construction heat provided that:• The furnace is permanently installed with all electrical wiring,piping, air filters

Two-Pipe Termination Kit (Direct Vent/2-Pipe System OnlyDetermine an appropriate location for termination kit using theguidelines provided in section

Furnace condensate is mildly acidic, typically in the pH range of3.2 to 4.5. Due to corrosive nature of this condensate, a condensatepH neutralizing f

connections (furnace, A/C, or humidifier) must be terminated intoan open or vented drain as close to the respective equipment aspossible to prevent si

UNIT MAY NOT OPERATEFailure to follow this caution may result in intermittent unitoperation or performance satisfaction.These furnaces are equipped wi

4. Use Fig. 54 or wiring schematic to determine proper setupposition of CF switches. (See Fig. 36 and 48.)5. Replace main furnace door and blower acce

NOTE: Low-heat-only switch, SW1-2, selects either the low-heat-only operation mode when ON, (see item 2. below) oradaptive heating mode when OFF, in r

4. Flame-Proving-When burner flame is proved at the flame-proving sensor electrode FSE, the furnace control CPU beginsthe blower-ON delay period and c

CPU can turn on the air conditioning relay ACR to energize theY/Y2 terminal and switch the outdoor unit to high-cooling.The furnace control CPU can st

BLWM will remain ON until the main burners ignite then shutOFF and remain OFF for the blower-ON delay (60 seconds inlow-heat and 35 seconds in high-he

A00275Fig. 51—Two-Stage Furnace with Single-Speed AirConditionerFig. 52—Two-Stage Furnace with Two-Speed Air Con-ditionerA00276A00277Fig. 53—Two-Stage

from the outside atmosphere and all flue products are discharged tothe outside atmosphere. See furnace and factory accessory termi-nation kit instruct

A00279Fig. 55—Dual Fuel Thermostat with Two-StageFurnace and Single-Speed Heat PumpA00281Fig. 57—Two-Stage Thermostat With Two-Stage Fur-nace and Two-

Notes for Fig. 51-58:1. Heat pump MUST have a high pressure switch for dual fuel applications.2. Refer to outdoor equipment Installation Instructions

AVG. GAS SPECIFIC GRAVITY OF NATURAL GASHEAT VALUE 0.58 0.60 0.62 0.64AT ALTITUDE Orifice Mnfld Press Orifice Mnfld Press Orifice Mnfld Press Orifice

AVG. GAS SPECIFIC GRAVITY OF NATURAL GASHEAT VALUE 0.58 0.60 0.62 0.64AT ALTITUDE Orifice Mnfld Press Orifice Mnfld Press Orifice Mnfld Press Orifice

2. Adjust manifold pressure to obtain input rate.a. Remove burner enclosure front.NOTE: Manifold pressure MUST always be measured with theburner box c

EXAMPLE: 100,000 BTUH HIGH-HEAT INPUT FURNACEINSTALLED AT 4300 FT.Furnace Input Rateat Sea LevelXDerateMultiplierFactor=Furnace Input Rateat Installat

SET TEMPERATURE RISEUNIT DAMAGE HAZARDFailure to follow this caution may result in overheating theheat exchangers or condensing flue gases in heat exc

5. Turn off 115-v power to furnace.6. Reconnect inducer motor wire harness. Reinstall furnaceaccess door.7. Turn on 115-v power to furnace.8. Reset th

CHECKLIST—DIRECT VENT (2-PIPE) INSTALLATIONLOAD CALCULATION____________ Heating Load (Btuh)____________ Cooling Load (Btuh)____________ Furnace Model

CHECKLIST—NON DIRECT VENT (1-PIPE) INSTALLATIONLOAD CALCULATION____________ Heating Load (Btuh)____________ Cooling Load (Btuh)____________ Furnace Mo

• When lever type gas shutoffs are used they shall be T-handletype.• The use of copper tubing for gas piping is not approved by thestate of Massachuse

Copyright 2005 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231 58mvb1siManufacturer reserves the right to discontinue, or change at any ti

CONDENSATE TRAP LOCATION (ALTERNATE UPFLOWORIENTATION)An alternate location for the condensate trap is the left-hand sideof casing. (See Fig. 2 and 8.

c. Determine appropriate length, then cut and connect tube.CONDENSATE TRAP FIELD DRAIN ATTACHMENTRefer to Condensate Drain section for recommendations

CARBON MONOXIDE POISONING HAZARDFailure to follow this warning could result in personal injuryor death.Casing hole filler cap must be installed in blo