Bryant 345MAV instruction manual VIII. GAS Piping, 171⁄2-IN. Wide Casings only

Page 18

WASHABLE

FILTER

FILTER

RETAINER

BOTTOM

CLOSURE

PANEL

Fig. 20ÐFilter Installed for Side Inlet

A93045

FRONT FILLER

PANEL

A93047

171⁄2-IN. WIDE CASINGS ONLY:

INSTALL FIELD-SUPPLIED FILTER FILLER STRIP UNDER FILTER.

3″

24 1/2″

1″

241⁄2-IN. WIDE CASINGS ONLY: CUT AND FOLD FACTORY-PROVIDED FILTERS AS SHOWN TO DESIRED SIZE.

Fig. 22ÐRemoving Bottom Closure Panel

VIII. GAS PIPING

Gas piping must be installed in accordance with national and local codes. Refer to current edition of NFGC. Canadian installations must be made in accordance with NSCNGPIC and all authorities having jurisdiction. Gas supply line should be a separate line running directly from meter to furnace, if possible. Refer to Table 2 for recommended gas pipe sizing. Risers must be used to connect to furnace and to meter. Support all gas piping with appropriate straps, hangers, etc. Use a minimum of 1 hanger every 6 ft. Joint compound (pipe dope) should be applied sparingly and only to male threads of joints. Pipe dope must be resistant to propane gas.

CAUTION: Connect gas pipe to furnace using a backup wrench to avoid damaging gas controls.

WASHABLE FILTER

WARNING: Gas valve ON and OFF switch MUST be facing forward or tilted upward. (See Fig. 40.) Failure to follow this warning could result in property damage or death.

WARNING: Never purge a gas line into a combustion chamber. Never use matches, candles, flame, or other sources of ignition for purpose of checking leakage. Use a soap-and-water solution to check for leakage. A failure to follow this warning could result in fire, explosion, personal injury, or death.

FILTER

FILTER RETAINER

SUPPORT

Fig. 21ÐBottom Filter Arrangement

To remove bottom closure panel, perform following:

A96030

WARNING: Use proper length of pipe to avoid stress on gas control manifold. Failure to follow this warning could result in a gas leak resulting in fire, explosion, personal injury, or death.

1.Tilt or raise furnace and remove 2 screws holding front filler panel. (See Fig. 22.)

2.Rotate front filler panel downward to release holding tabs.

3.Remove bottom closure panel.

4.Reinstall front filler panel and screws.

Ð18Ð

Install a sediment trap in riser leading to furnace. Trap can be installed by connecting a tee to riser leading to furnace so straight-through section of tee is vertical. Then connect a capped nipple into lower end of tee. Capped nipple should extend below level of gas controls. Place a ground joint union between gas control manifold and manual gas shutoff valve. (See Fig. 23.)

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Contents Electrostatic Discharge ESD Precautions Ð1ÐÐ2Ð Dimensions→ ÐDimensional Drawing Unit SizeMinimum Inches Clearance to Combustible Construction Safety ConsiderationsElectrostatic Discharge ESD Precautions → ÐClearances to CombustiblesII. Upflow Applications IntroductionApplications General Condensate Trap Location Factory-Shipped OrientationÐ5Ð Condensate Trap Location Alternate Upflow OrientationPressure Switch Tubing Ð6ÐCondensate Trap Field Drain Attachment Condensate Trap Location Condensate Trap Freeze ProtectionIII. Downflow Applications Condensate Trap TubingIV. Horizontal Left SUPPLY-AIR Discharge Applications Ð8ÐHorizontal 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 II. Unconfined Space III. Hazardous LocationsAIR for Combustion and Ventilation General III. Confined 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 General Requirements IV. Installation in Horizontal ApplicationsAIR Ducts Ductwork acoustical treatmentÐfilter Information Return Air ConnectionsVI. Filter Arrangement VII. Bottom Closure PanelVIII. GAS Piping 171⁄2-IN. Wide Casings onlyÐmaximum Capacity of Pipe CU FT PER HR Electrical ConnectionsNominal Length of Pipe FT Iron Internal Diameter Size Ðelectrical Data WiringLength FT³ CKT BKR Amps Phase Amps SizeÐWiring Diagram Venting II -V WiringIII. Accessories Removal of Existing Furnaces from Common Vent SystemsII. COMBUSTION-AIR and Vent Piping GeneralCombustion Air Pipe ÐCombustion-Air Inlet Pipe Assembly Ðmaximum Allowable Vent Pipe Length FT 3001 to4001 to 5000² 6001 to 7000² Ðmaximum Allowable Vent Pipe Length FT5001 to 6000² 7001 to 8000²ÐShort Vent 5 to 8 Ft System 9001 to 10,000²Vent Extension Pipe 040 060 080 100 120Condensate Drain General III. Vent TerminationIV. Multiventing Ðvent Pipe Termination ClearancesÐRoof Termination Preferred III. Continuous Blower Mode Heating ModeII. Cooling Mode IV. Heat Pump ModeComponent Test Sequence START-UP Procedures GeneralComponent Test II. Prime Condensate Trap with WaterIII. Purge GAS Lines → ÐInducer Housing Drain TubeIV. Adjustments Set Gas Input RateBTU/CU FT Altitude5000 Only4001 Only 50018000 7001775 Only 8001Ðaltitude Derate Multiplier for U.S.A ExampleAltitude Derate Multiplier Factor for U.S.A Ðgas Rate CU FT/HR Set Temperature RiseBlower Off Delay Heat Mode ±SPEED SelectorCheck Safety Controls Check Primary Limit Control II. Check Pressure SwitchChecklist Load Calculation ChecklistðinstallationCHECKLISTÐSTART-UP Vent Piping
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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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