Carrier 62E specifications Eps Exhaust Air Offset Screen, A62-388.epsFig Modulating Cfm

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button again to return to the main screen. Replace the user con- trol cover.

387.eps Fig. 19 — Exhaust Air Offset Screen

Modulating CO2 with Balanced Air Option (Fig. 20) — This option allows the user to enter minimum and maximum outside airflow levels. The user will then be allowed to enter minimum and maximum CO2 levels. The EzERV program will modulate the cfm of the ERV based on the building CO2 level. To enter the user settings press the pushbutton once to display the minimum cfm screen. Adjust the knob clockwise to increase and counterclockwise to decrease the minimum cfm level.

a62-388.epsFig. 20 — Modulating Cfm

Press the push button again to display the maximum cfm screen. Adjust the knob clockwise to increase and counter- clockwise to decrease the maximum cfm level. See Fig. 21.

Fig. 21 — Maximum Cfm Screen a62-389.eps

Press the push button again to display the minimum CO2 level screen. Adjust the knob clockwise to increase and coun- terclockwise to decrease the minimum CO2 level. See Fig. 22.

Fig. 22 — Minimum CO2 Screen a62-390.eps

Press the push button again to display the maximum CO2 level screen. Adjust the knob clockwise to increase and coun- terclockwise to decrease the maximum CO2 level. See Fig. 23.

Fig. 23 — Maximum CO2 Screen a62-391.eps

The exhaust airflow will automatically adjust to equal the supply airflow. Press the button again to return to the main screen. Replace the user control cover.

NOTE: The scale for the cfm vs. CO2 level is based on a CO2 sensor that outputs 0-vdc at 0 ppm CO2 and 10-vdc at 2000 ppm CO2. For example, using the figures above, the air- flow would modulate linearly from 1458 L/s (3090 cfm) at 3vdc to 2336 L/s (4950 cfm) at 5-vdc. A signal below 3-vdc would result in a constant 1458 L/s (3090 cfm) while a signal above 5-vdc would result in a constant 2336 L/s (4950 cfm).

Modulating CO2 with Offset Air Option — Follow the steps above for modulating CO2 with balanced air. After setting the maximum CO2 level press the push button again to display the

exhaust air offset screen. A negative exhaust air offset would equate to a smaller amount of air being exhausted from the building when compared to the outside air being supplied to the building. Adjust the knob clockwise to increase and counter- clockwise to decrease the exhaust offset cfm level. Press the button again to return to the main screen. Replace the user con- trol cover.

Building Pressure Control Option — This option will hold the outside air cfm level constant and will modulate the exhaust airflow to maintain the building pressure set point. Press the push button once to bring up the ERV cfm screen. Turn the knob clockwise to increase or counterclockwise to decrease the amount of outside air coming into the building. Press the push button again to display the "Building Pressure Set Point" screen. Adjust the knob clockwise to increase and counter- clockwise to decrease the desired building pressure level. Press the button again to return to the main screen. Replace the user control cover.

Modulating CO2 with Building Pressure Control Option — This option will modulate the supply fan of the ERV based on the building CO2 level, and will modulate the exhaust airflow to maintain the building pressure set point. Follow the proce- dure outlined above to configure the minimum and maximum outside airflow and CO2 levels. After setting the maximum CO2 level press the push button once more to display the build- ing pressure set point screen. Adjust the knob clockwise to increase and counterclockwise to decrease the desired building pressure level. Press the button again to return to the main screen. Replace the user control cover.

Operating Sequence — When operation is called for by the rooftop supply fan interlock or remote timer option, the ERV supply blower(s), exhaust blower(s) and wheel motor will be energized. The supply and exhaust blowers will provide the adjusted/programmed airflow and the ERV wheel will rotate at a constant speed unless influenced by one of the following con- ditions. The sequence of operation is shown in Fig. 24.

LOW TEMPERATURE LOCKOUT — The optional low temperature lockout function locks out the 62E ERV if the out- door-air temperature entering the wheel is below the set point. The low temperature lockout is factory set at –23.3 C (–10 F), and can be field adjusted from –34.4 C to 37.8 C (–30 F to 100 F).

FROST PROTECTION — The frost protection option moni- tors the pressure drop across the ERV wheel. If the pressure drop rises above an adjustable limit, the outside air fan will be de-energized for a 5-minute period. The setting must be field set at 50% above (1.5 times) the pressure drop measured at the maximum adjusted airflow and a clean, dry wheel.

ERV WHEEL VARIABLE FREQUENCY DRIVE (VFD) — The ERV wheel VFD option monitors the pressure drop across the ERV wheel. If the pressure drop rises above an adjustable limit, the ERV wheel rotational speed will be re- duced for a minimum of 5 minutes to defrost the wheel. The setting must be field set at 50% above (1.5 times) the pressure drop measured at the maximum adjusted airflow and a clean, dry wheel.

PRE-HEATERS — Units may be equipped with electric pre- heaters to prevent frost build-up on the wheel by slightly warming the outdoor air. This feature monitors the pressure drop across the ERV wheel and the outdoor-air temperature. If the pressure drop rises above an adjustable limit and the out- door-air temperature is below an adjustable set point, the heat- ers will be energized. The wheel pressure drop setting must be field set at 50% above (1.5 times) the pressure drop measured at the maximum adjusted airflow and a clean, dry wheel. The outdoor air thermostat is factory set to activate at –20.6 C (–5 F), and can be field adjusted from –34.4 C to 37.8 C (–30 F to 100 F).

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Contents Safety Considerations ContentsGeneral Physical Data SI Unit 62E Physical Data English Nominal Capacity cfm Supply/Exhaust Fan Options Physical Data SI InstallationSupply/Exhaust Fan Options Physical Data English FAN Option CodeRTU ERV62E Unit A62-330Type A62-331 62EL-62EU Unit Cabinet DimensionsA62-376.eps A62-247efA62-246ef A62-377 Dimension Unit TypeA62-443 A62-37862E Unit Type 62E2-62E7 Unit Cabinet DimensionsInstall Standard Roof Curb A62-442 62E2-62E7 Unit Roof Curb DimensionsA62-379 62EB-62EU Unit Horizontal Discharge Box DimensionsA62-380 Make Electrical ConnectionsUnit FAN Motor Option Chassis FLA Supply and Exhaust Fans Electrical DataHeater Unit and Heater 62E Chassis FLA Electric Heat Electrical Data62.83 Typical Wiring Schematic START-UP Energy Recovery WheelA62-383.eps Airflow vs. Pressure Drop Across ERV Wheel Airflow VS. Pressure Drop Across ERV Wheel Unit EpsFig Outside Air Cfm ScreenA62-388.epsFig Modulating Cfm Eps Exhaust Air Offset ScreenFalse True Rmcorp Wiring Specifications Recommended Vendors and Part NumbersAWG CL2PUPC Open Controller Specification Recommmendation MS/TP Wiring RecommendationsNEC UPC Communication Protocol Settings DIP Switches SW3 Protocol Switch Settings For MS/TPBaud Selection Table Bacnet Point Name Read Object ID Write Object Name Network Points ListService A62-279ef Installing Wheel SegmentsA62-278ef A62-280ef Belt ReplacementA62-281ef A62-282efPulley Location A62-284efReplacing a Blower 62EB and 62E7 Units MaintenanceA62-285ef A62-286ef Diameter Seal AdjustmentERV Troubleshooting TroubleshootingSymptom Possible Causes Action to Check Possible Remedy Page Coupled to RTU or stand-alone Specify RTU Application

62E specifications

The Carrier 62E is a highly regarded air conditioning unit known for its efficiency, reliability, and advanced technology features. Designed to cater to both residential and light commercial applications, this model is recognized for its ability to provide optimal cooling performance even in challenging climates.

One of the standout features of the Carrier 62E is its energy efficiency. The unit boasts a high Seasonal Energy Efficiency Ratio (SEER) rating, which ensures significant energy savings over time. This efficiency not only translates to lower energy bills for users but also contributes positively to environmental sustainability. The Carrier 62E is designed with eco-friendly refrigerants that minimize its carbon footprint while maintaining high performance levels.

In terms of technology, the Carrier 62E comes equipped with innovative smart controls. The unit can be integrated with smart home systems, allowing users to control their cooling preferences through their smartphones or other connected devices. This feature enhances convenience, enabling homeowners to adjust temperatures and monitor their system remotely, ensuring maximum comfort regardless of their location.

The 62E is engineered with a durable and robust build, ensuring long-lasting reliability. The components are crafted to withstand harsh weather conditions, making it a solid investment for users in varied climates. Additionally, the unit operates quietly, thanks to its advanced sound-dampening technologies, ensuring that indoor environments remain peaceful and undisturbed.

Installation of the Carrier 62E is straightforward, thanks to its versatile design and flexibility. The system can be configured for various ductwork arrangements, adapting seamlessly to different home layouts and existing infrastructure.

Another notable characteristic of the Carrier 62E is its advanced filtration system. The unit comes with a high-efficiency filter that captures airborne particles, allergens, and pollutants, promoting cleaner and healthier indoor air quality. This is an essential feature for households with allergy sufferers, as it helps create a more comfortable living space.

Overall, the Carrier 62E stands out as a leader in residential and light commercial air conditioning solutions. With its energy efficiency, state-of-the-art technology, durable design, and air quality improvements, it meets the diverse needs of modern users while providing remarkable comfort throughout the year. As climate considerations become increasingly important, the Carrier 62E remains a compelling choice for those seeking to enhance their home's comfort while being mindful of energy consumption and environmental impact.
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