320720

MAIN LIMIT

SHIELD

MAIN LIMIT

BURNER

ENCLOSURE

GASKET

PRESSURE

SWITCH

PRIMARY CELL

PRIMARY CELL

INLET PANEL

PRIMARY CELL

OUTLET PANEL

COLD SPOT

BAFFLE

COUPLING

BOX

T-TABS

BLOWER

SHELF

CONDENSING HEAT EXCHANGER CELL REAR PANEL

CONDENSING

HEAT EXCHANGER ASSEMBLY

BURNER ENCLOSURE

AND GAS VAVLEINDUCER MOTOR

NOTE: ACTUAL COMPONENT LOCATION MAY VARY

DEPENDING ON MODEL & SERIES.

A05128

Fig. 3 - Expanded View of Heat System Components in Upflow Orientation

NOTE: If gasket is damaged in any way, it must be repaired. To repair, apply a small bead of G.E. RTV 162, G.E. 6702, or Dow-Corning RTV 738 to damaged gasket area. Apply sealant releasing agent such as PAM cooking spray or equivalent (must not contain corn nor canola oil, halogenated hydrocarbons or aromatic content to prevent inadequate sealing) to burner enclosure mating surface.

4.Connect pressure tube to intake housing.

Reinstall Whole Cell Panel Assembly

!CAUTION

PERSONAL INJURY HAZARD

Failure to follow this caution may result in personal injury.

Whole cell panel assembly is heavy. Get help to lift and install.

1.Install whole cell panel assembly with heat exchanger, burner box, inducer assembly, J-box (if applicable), and control center (if applicable) through front of furnace.

!WARNING

FIRE AND UNIT OPERATION HAZARD

Failure to follow this warning could result in personal injury, death and / or property damage.

DO NOT cut or tear foil face insulation. If cuts or tears occur, repair insulation with foil tape.

2.Secure whole cell panel assembly to blower shelf by in- stalling two screws through blower housing (four screws on 120 and 140 sizes) and two screws next to blower housing.

NOTE: When reinstalling condensing heat exchanger assembly, the lower flange of the condensing heat exchanger cell rear panel must engage on the T-tabs in rear blower shelf. (See Fig. 3.)

3.Install three screws to each side of inlet cell panel and into cell panel supports.

4.If previously removed, reinstall control center in casing flange.

5.If control center is located in burner compartment or fur- nace, reinstall blower motor leads, transformer wires, door switch wires, and auxiliary limit switch wires (if present) through blower shelf and grommet.

6.If control is located in blower compartment of furnace, pull wires to flame sensor, hot surface igniter, overtemper- ature switch, gas valve, pressure switch(es), inducer motor, limit switch, and J-box through blower shelf.

7.Install J-box.

8.Reattach wires to control center or components. See wir- ing diagram on furnace for proper attachment.

9.Reinstall condensate trap where previously installed fur- nace casing or blower shelf.

10.Reconnect condensate trap drain tubes. See tubing dia- gram on furnace for proper tube location.

11.Connect field drain to condensate trap.

NOTE: Ensure tubes are not kinked or pinched, as this will affect operation.

12.Connect vent pipe by inserting pipe into coupling, elasto- meric (rubber) coupling, and then fully into inducer hous- ing outlet.

13.Connect combustion-air intake pipe to intake housing and install screw to secure. Do not use RTV unless previously used.

14.Install top filler panel.

15.Install gas supply pipe to gas valve using backup wrench.

4

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Carrier 320720---751 THRU ---761 Reinstall Whole Cell Panel Assembly, Fire and Unit Operation Hazard
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320720---751 THRU ---761 specifications

The Carrier 320720---751 THRU ---761 series represents a significant advancement in HVAC technology, offering enhanced performance, energy efficiency, and user-friendliness. These units are designed for commercial and residential applications, making them versatile and suitable for various settings, from small businesses to large industrial facilities.

One of the standout features of the Carrier 320720 series is its innovative variable-speed compressor technology. This allows the unit to adjust its output to match the specific cooling or heating needs of the space, providing a more comfortable environment while minimizing energy consumption. By operating at lower speeds most of the time, the units significantly reduce energy costs and extend the lifespan of the system.

Additionally, the series is equipped with advanced inverter technology, which contributes to its energy efficiency. The inverter system smoothly modulates the compressor speed, ensuring optimal performance across different temperature conditions. This not only enhances efficiency but also contributes to notable noise reduction, creating a quieter indoor atmosphere.

Another essential feature of the Carrier 320720 series is its smart thermostat compatibility. This allows for remote monitoring and control via smartphone applications, facilitating easy temperature adjustments and scheduling. The integrated Wi-Fi capability provides users with the convenience of managing their HVAC system from anywhere, promoting energy savings and comfort.

Moreover, the units are designed with a robust, weather-resistant casing that enhances durability and performance in diverse environmental conditions. The energy efficiency ratings of the series comply with the latest industry standards, often exceeding requirements like SEER (Seasonal Energy Efficiency Ratio) and EER (Energy Efficiency Ratio), which translates to significant long-term cost savings.

In terms of environmental impact, the Carrier 320720 series utilizes eco-friendly refrigerants, aligning with global initiatives to reduce harmful emissions and enhance indoor air quality.

In conclusion, the Carrier 320720---751 THRU ---761 series is a cutting-edge solution for efficient heating and cooling. With its variable-speed compressor, inverter technology, smart capabilities, and environmentally friendly design, it ensures that users benefit from comfort, efficiency, and peace of mind, making it a top choice for modern HVAC needs.
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