Bryant 345MAV II. Installation on a Concrete Slab, Opening Dimensions, Furnace Casing Width

Page 15

5⁄16″

5⁄16″

1 3⁄4″

1 3⁄4″

5⁄16″

5⁄16″

1 3⁄4″ 1 3⁄4″

A89014

Fig. 14ÐLeveling Legs

3.Install another nut on other side of furnace base. (Install flat washer if desired.)

4.Adjust outside nut to provide desired height, and tighten inside nut to secure arrangement.

NOTE: Bottom closure must be used when leveling legs are used. See Bottom Closure Panel section.

II.INSTALLATION ON A CONCRETE SLAB

1.Construct hole in floor per dimensions in Fig. 15.

2.Place plenum and furnace as shown in Fig. 16.

III.INSTALLATION ON A COMBUSTIBLE FLOOR (DOWNFLOW APPLICATIONS)

1.Cut and frame hole in floor per dimensions in Installation Instructions packaged with downflow subbase kit.

NOTE: Remove furnace perforated, discharge duct flanges when they interfere with mating flanges on coil on downflow subbase. To remove furnace perforated, discharge duct flange, use wide duct pliers or duct flange tool to bend flange back-and-forth until it breaks off. Be careful of sharp edges. (See Fig. 17.)

WARNING: Do not bend duct flanges inward as shown in Fig. 17. This will affect airflow across heat exchangers and may cause limited cycling or premature heat ex- changer failure. Remove duct flange completely or bend it inward a minimum of 210° as shown in Fig. 17.

2.When complete, downflow subbase, plenum, and furnace (or coil casing when used) should be installed as shown in Fig. 18.

A

B

HOLE IN

FLOOR

 

 

 

 

A73382

OPENING DIMENSIONS (IN.)

 

 

 

 

 

 

FURNACE

A

B

 

CASING WIDTH

Heat Only

 

Heat/Cool*

 

 

 

 

 

 

 

17-1/2

16-7/16

19-5/8

 

19-7/16

21

19-7/8

19-5/8

 

19-7/16

24-1/2

23-7/16

19-5/8

 

19-7/16

 

 

 

 

 

*These dimensions apply when a model CD or CK Evaporator Coil casing is to be installed.

Fig. 15ÐFloor Opening in Concrete Slab

FURNACE

PLENUM

A73383

Fig. 16ÐFurnace on a Concrete Slab

(Non-Garage Installation)

Ð15Ð

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Contents Ð1Ð Electrostatic Discharge ESD PrecautionsUnit Size Dimensions→ ÐDimensional Drawing Ð2Ð→ ÐClearances to Combustibles Safety ConsiderationsElectrostatic Discharge ESD Precautions Minimum Inches Clearance to Combustible ConstructionCondensate Trap Location Factory-Shipped Orientation IntroductionApplications General II. Upflow ApplicationsCondensate Trap Location Alternate Upflow Orientation Ð5ÐPressure Switch Tubing Ð6ÐCondensate Trap Field Drain Attachment Condensate Trap Tubing Condensate Trap Freeze ProtectionIII. Downflow Applications Condensate Trap LocationÐ8Ð IV. Horizontal Left SUPPLY-AIR Discharge ApplicationsHorizontal Right SUPPLY-AIR Discharge Applications Construct a Working PlatformÐ9Ð ÐAttic Location and Working Platform Front Upflow or Downflow Horizontal II. Furnace Location Relative to Cooling Equipment III. Confined Space III. Hazardous LocationsAIR for Combustion and Ventilation General II. Unconfined SpaceInstallation Leveling Legs if Desired Combustion AIR from Outdoors Through Vertical DuctsCombustion AIR from Outdoors Through Horizontal Ducts II. Installation on a Concrete Slab Opening DimensionsFurnace Casing Width Ductwork acoustical treatment IV. Installation in Horizontal ApplicationsAIR Ducts General RequirementsVII. Bottom Closure Panel Return Air ConnectionsVI. Filter Arrangement Ðfilter Information171⁄2-IN. Wide Casings only VIII. GAS PipingÐmaximum Capacity of Pipe CU FT PER HR Electrical ConnectionsNominal Length of Pipe FT Iron Internal Diameter Size Amps Size WiringLength FT³ CKT BKR Amps Phase Ðelectrical DataÐWiring Diagram Removal of Existing Furnaces from Common Vent Systems II -V WiringIII. Accessories VentingII. COMBUSTION-AIR and Vent Piping GeneralCombustion Air Pipe ÐCombustion-Air Inlet Pipe Assembly Ðmaximum Allowable Vent Pipe Length FT 3001 to4001 to 5000² 7001 to 8000² Ðmaximum Allowable Vent Pipe Length FT5001 to 6000² 6001 to 7000²9001 to 10,000² ÐShort Vent 5 to 8 Ft System040 060 080 100 120 Vent Extension PipeÐvent Pipe Termination Clearances III. Vent TerminationIV. Multiventing Condensate Drain GeneralÐRoof Termination Preferred IV. Heat Pump Mode Heating ModeII. Cooling Mode III. Continuous Blower ModeII. Prime Condensate Trap with Water START-UP Procedures GeneralComponent Test Component Test SequenceSet Gas Input Rate → ÐInducer Housing Drain TubeIV. Adjustments III. Purge GAS LinesAltitude BTU/CU FTOnly 5001 Only4001 5000Only 8001 7001775 8000Ðaltitude Derate Multiplier for U.S.A ExampleAltitude Derate Multiplier Factor for U.S.A ±SPEED Selector Set Temperature RiseBlower Off Delay Heat Mode Ðgas Rate CU FT/HRCheck Safety Controls Check Primary Limit Control II. Check Pressure SwitchChecklist Vent Piping ChecklistðinstallationCHECKLISTÐSTART-UP Load Calculation
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345MAV specifications

The Bryant 345MAV is a premier choice in the realm of residential heating and cooling systems, encapsulating advanced technologies, high efficiency, and remarkable performance. Designed for homeowners seeking reliability and comfort, this model exemplifies modern HVAC (Heating, Ventilation, and Air Conditioning) innovations.

One standout feature of the Bryant 345MAV is its impressive energy efficiency. With a high SEER (Seasonal Energy Efficiency Ratio) rating, it operates at peak levels while consuming less energy. This not only reduces utility bills but also supports environmental sustainability, making it an ideal selection for eco-conscious consumers. The model employs variable-speed technology, which allows the system to adjust its output based on current heating and cooling needs. As a result, it provides consistent indoor comfort while minimizing temperature fluctuations.

The Bryant 345MAV incorporates advanced refrigerant technologies designed for optimal performance. It uses R-410A refrigerant, which is known for its lower environmental impact compared to traditional refrigerants like R-22. This environmentally friendly aspect aligns with regulations aimed at reducing ozone depletion, thereby promoting a greener approach to heating and cooling.

Reliability is another hallmark of the Bryant 345MAV. Engineered with precision, this model features a durable build designed to withstand varying weather conditions. The system is equipped with a robust compressor that is engineered for longevity and minimal noise during operation. Homeowners will appreciate the quiet performance of the 345MAV, ensuring peace in their living spaces.

Comfort also extends to the user experience with the inclusion of a smart thermostat option. This integration allows homeowners to manage their heating and cooling systems remotely, enhancing convenience and control. Programmable settings can optimize energy use based on individual schedules, facilitating both comfort and savings.

In summary, the Bryant 345MAV is a top-tier solution for residential climate control, blending energy efficiency, innovative technology, and unmatched reliability. With its variable-speed operation, environmentally friendly refrigerant, and smart features, the 345MAV represents a significant advancement in the HVAC field. Homeowners investing in this model can expect a system that not only meets their heating and cooling needs but exceeds them in terms of efficiency and comfort.
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