everwell AHC-15 High Efficiency Air Handler Owner’s Manual

everwell AHC-15 High Efficiency Air Handler

Product Information

Specifications

• Model: High Efficiency Air-Handler
• Unit Type: Indoor Split-System
• Certification: AHRI Listed
• SEER Rating: Up to 15
• Capacity: 1.5 to 5 Tons

Product Usage Instructions

Safety

• Before proceeding with installation or servicing the unit, ensure all power sources are disconnected to avoid personal injury or death due to hazardous voltage.

General

• These instructions cover the installation, adjustment, and operation of the high-efficiency air handler.
• It is recommended to read the manual thoroughly before starting any installation or operation procedures.

Unit Dimensions

• The dimensions of the unit are provided in the manual for reference during installation.
• Ensure the unit fits the designated space properly.

Applications

• The unit is suitable for indoor split-system applications with a SEER rating of up to 15 and a capacity ranging from 1.5 to 5 tons.
• All installations must comply with national, state, and local codes.

FAQ

Q: What should I do before servicing the unit?

• A: Disconnect all power sources to the unit to avoid any risk of electrical shock or personal injury.

Q: Can I perform maintenance on the unit myself?

• A: Consumer service is recommended only for filter cleaning or replacement. All other installation, service, and maintenance tasks should be performed by trained and qualified service personnel.

Q: What happens if I don’t follow the installation instructions?

• A: Failure to follow the instructions may lead to improper installation, adjustment, or maintenance, which could result in fire, electrical shock, property damage, personal injury, or death.

RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION

WARNING

• These instructions are intended as an aid to qualified licensed service personnel for the proper installation, adjustment, and operation of this unit. Read these instructions thoroughly before attempting installation or operation.
• Failure to follow these instructions may result in improper installation, adjustment, service, or maintenance possibly resulting in fire, electrical shock, property damage, personal injury, or death.
• DO NOT DESTROY THIS MANUAL Please read it carefully and keep it in a safe place for future reference by a serviceman.
• This document is customer property and is to remain with this unit.
• These instructions do not cover all the different variations systems nor does it provide for every possible contingency to be met in connection with installation.
• All phases of this installation must comply with NATIONAL STATE AND LOCAL CODES. If additional information is required please contact your local distributor.

SAFETY

• WARNING Disconnect all power to the unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment.
• Hazardous voltage can cause severe personal injury or death.
• If removal of the blower assembly is required, all disconnect switches supplying power to the equipment must be de-energized and locked (if not in sight of the unit) so the field power wires can be safely removed from the blower assembly.
• Failure to do so can cause electrical shock resulting in personal injury or death.
• Because of possible damage to equipment or personal injury, installation, service, and maintenance should be performed by trained, qualified service personnel.
• Consumer service is recommended only for filter cleaning/replacement. Never operate the unit with the access panels removed.
• These instructions are intended as an aid to qualified, licensed service personnel for the proper installation, adjustment, and operation of this unit. Read these instructions thoroughly before attempting installation or operation.
• Failure to follow these instructions may result in improper installation, adjustment, service, or maintenance possibly resulting in fire, electrical shock, property damage, personal injury, or death.
• The unit must be permanently grounded. Failure to do so can result in electrical shock causing personal injury or death.

WARNING

• PROPOSITION 65: This appliance contains fiberglass insulation. Respirable particles of fiberglass are known to the State of California to cause cancer.
• All manufacturer products meet current federal OSHA Guidelines for safety. California Proposition 65 warnings are required for certain products, which are not covered by the OSHA standards.
• California’s Proposition 65 requires warnings for products sold in California that contain or produce any of over 600 listed chemicals known to the State of California to cause cancer or birth defects such as fiberglass insulation, lead in brass, and combustion products from natural gas.
• All “new equipment” shipped for sale in California will have labels stating that the product contains and/or produces Proposition 65 chemicals. Although we have not changed our processes, having the same label on all our products facilitates manufacturing and shipping.
• We cannot always know “when, or if” products will be sold in the California market.
• You may receive inquiries from customers about chemicals found in, or produced by, some of our heating and air-conditioning equipment, or found in natural gas used with some of our products.
• Listed below are those chemicals and substances commonly associated with similar equipment in our industry and other manufacturers.
• Glass Wool (Fiberglass) Insulation Carbon Monoxide (CO). Formaldehyde Benzene
• More details are available at the Websites for OSHA (Occupational Safety and Health Administration), at www.osha.gov, and the State of California’s OEHHA (Office of Environmental Health Hazard Assessment ), at www.oehha.org.
• Consumer education is important since the chemicals and substances on the list are found in our daily lives. Most consumers are aware that products present safety and health risks when improperly used, handled, and maintained.
• The first 36 inches of supply air plenum and ductwork must be constructed of sheet metal as required by NFPA 90B. The supply air plenum or duct must have a solid sheet metal bottom directly under the unit with no openings, registers, or flexible air ducts located in it. If flexible supply air ducts are used they may be located only in the vertical walls of rectangular plenum, a minimum of 6 inches from the solid bottom. The metal plenum of the duct may be connected to the combustible floor base, if not, it must be connected to the unit supply duct exposed to the supply air opening from the downflow unit. Exposing combustible (non-metal) material to the supply opening of a down-flow unit can cause a fire resulting in property damage, personal injury, or death.

Exception warning to downflow:

• Installations on concrete floor slab with supply air plenum and ductwork completely encased must be not less than 2 inches of concrete (See NFPA 90A).

GENERAL

• The unit can be positioned for bottom return air in the upflow position, left and right return in the horizontal position, and top return in the downflow position.

• This Air Handler provides the flexibility for installation in any up-flow or down-flow horizontal application. The direct drive motors provide a selection of air volume to match any application. 3-Speed motors provide selections of airflow to meet desired applications.

• Top and side power and control wiring, and accessible screw terminals for control wiring all combine to make the installation easy and minimize installation cost. Please contact your local distributor. See Fig.6.

• Do not install the unit in an area where flammable materials are present due to the risk of an explosion resulting in
  serious injury or death.

• The appliance is only intended to supply conditioned air to one room.

• If the supporting structural members are not strong enough to take the unit’s weight, the unit could fall out of place and cause serious injury.

• If a return-air duct is not installed, carefully select the place and method of product installation so that airflow into the product will not be blocked.

• The unit should be installed in a level position to ensure proper condensation drainage. Up to an additional ¼” rise over the width or depth of the unit is allowed to create additional sloping towards the drain. The Unit must be positioned between level and ¼” rise, sloping toward the drain connections.

• Install the indoor and outdoor unit, power supply wiring, and connecting wires at least 3.5 ft. away from televisions or radios to prevent image interference or noise.

• To ensure the proper installation, select a solid and level site. Ensure enough space is maintained for installation and maintenance. See Fig.2 and Fig.3.

• When the unit is installed in a hot and humid place If the humidity inside the installation space exceeds 86℉ and RH 80%, it is recommended to insulate the cabinet exterior.

• Use glass wool or polyethylene foam as insulation so that the thickness is more than 2 in. and fits inside the installation space opening.

• Respectively, condensation may form on the surface of the insulation.

• Be sure to use insulation that is designed for use with HVAC Systems. Condensation may form on the product during cool operation.

• It is also recommended to use a second drain pan and secure the unit firmly to prevent it from falling. see Fig.4 and Fig.5.

WARNING

• Supply duct is intended to handle conditioned air for circulation through a duct supplying only one room.
• Room space may be partitioned into rooms within the same unit, but supply air is not to be delivered to any other rooms.

UNIT DIMENSIONS

DIMENSIONAL DATA

APPLICATIONS

VERTICAL UPFLOW

1. Vertical Upflow configuration is the factory set on all models (see Fig 6)
2. If a side return air opening is required, the field fabricates a return air plenum with an opening large enough to supply the unit and strong enough to support the unit weight.
3. If return air is to be ducted, install duct flush with the floor. Use a fireproof resilient gasket 1/8 to 1/4 in. thick between the ducts, unit, and floor. Set the unit on the floor over the opening.

IMPORTANT NOTE Torque applied to drain connections should not exceed 15.ft.lbs.(see Fig.6&7)

HORIZONTAL

• The horizontal right is the default factory configuration for the units. Horizontal left isn’t the default factory configuration for the units.
• Conversion to Horizontal Left: A vertical upflow unit may be converted to horizontal left by removing the indoor coil assembly and reinstalling the coil as shown for the left-hand air supply.

1. Rotate the unit into the downflow position, with the coil compartment on top and the blower compartment on bottom. See Fig. 8.
2. Reinstall the indoor coil 180° from the original position. Ensure the retaining channel is fully engaged with the coil rail. See Fig. 8.
3. Secondary drain pan kits are recommended when the unit is configured for the horizontal position over a finished ceiling and/or living space.

ELECTRICAL WIRING

Field wiring must comply with the National Electric Code and any applicable local ordinance.

WARNING

• Disconnect all power to the unit before installing or servicing. More than one disconnect switch may be required to de-energize the equipment.
• Hazardous voltage can cause severe personal injury or death.

POWER WIRING

• Proper electrical power must be available for connection to the unit model being installed. See the unit nameplate, wiring diagram, and electrical data in the installation instructions.
• If required, install a branch circuit disconnect of adequate size, located within sight of, and readily accessible to the unit.
• IMPORTANT: After the Electric Heater is installed, units may be equipped with one, two, or three 30/60 amp. circuit breakers.
• These breaker(s) protect the internal wiring in the event of a short circuit and serve as a disconnect.
• Circuit breakers installed within the unit do not provide over-current protection of the supply wiring and therefore may be sized larger than the branch circuit protection.
• Supply circuit power wiring must be 75°C minimum copper conductors only. See Electrical Data In this section for ampacity, wire size, and circuit protector requirements. Supply circuit protective devices may be either fuses or “HACR” type circuit breakers.
  Power wiring may be connected to either the right, left side, or top. concentric knockouts are provided for the connection of power wiring to the unit.

CONTROL WIRING

• IMPORTANT: Class 2 low voltage control wiring should not be run in conduit with main power wiring and must be separated from power wiring unless class 1 wire of proper voltage rating is used.
• Low voltage control wiring should be 18 Awg. color coded. For lengths longer than 100 ft., 16 Awg. wire should be used.
• See the wiring diagrams attached to the indoor and outdoor sections to be connected.
• Make sure, after installation, separation of control wiring and power wiring has been maintained.

GROUNDING

• WARNING  The unit must be permanently grounded. Failure to do so can result In electrical shock causing personal injury or death.
• Grounding may be accomplished by grounding metal conduit when installed under electrical codes to the unit cabinet.
• Grounding may also be accomplished by attaching ground wire(s) to the ground lug(s) provided in the unit wiring compartment.
• Ground lug(s) are located close to the wire entrance on the left side of the unit (up-flow). Lug(s) may be moved to marked locations near the wire entrance on the right side of the unit (upflow).
• If an alternate location is more convenient.
• The use of multiple supply circuits requires the grounding of each circuit to the lug(s) provided in the unit.

ELECTRICAL DATA

MODEL| VOLTAGE| HERTS| HP| RPM| SPEEDS| CIRCUIT

AMPS.

| MAXIMUM CIRCUIT PROTECTOR
---|---|---|---|---|---|---|---
18K| 208/230| 60| 1/4| 830| 3| 1.8| 3(A)
24K| 208/230| 60| 2/7| 910| 3| 2.3| 3(A)
30K| 208/230| 60| 1/2| 950| 5| 2.8| 3(A)
36K| 208/230| 60| 1/2| 990| 5| 4.0| 6(A)
42K| 208/230| 60| 3/4| 1065| 5| 4.5| 6(A)
48K| 208/230| 60| 3/4| 970| 5| 5.2| 6(A)
60K| 208/230| 60| 3/4| 970| 5| 5.4| 6(A)

Applicable to 15SEER

• The air distribution system has the greatest effect on airflow. The duct system is controlled by the contractor. For this reason, the contractor should use only industry-recognized procedures.
• Heat pump systems require a specified airflow. Each ton of cooling requires between 350 and 450 cubic feet of air per minute (CFM), or 400 CFM nominally.
• Duct design and construction should be carefully done. System performance can be lowered dramatically through bad planning or workmanship.
• Air supply diffusers must be selected and located carefully. They must be sized and positioned to deliver treated air along the perimeter of the space.
• If they are too small for their intended airflow, they become noisy. If they are not located properly, they cause drafts. Return air grilles must be properly sized to carry air back to the blower. If they are too small, they also cause noise.
• The installers should balance the air distribution system to ensure proper quiet airflow to all rooms in the home. This ensures a comfortable living space.
• An air velocity meter or airflow hood can give a reading of system CFM.

REFRIGERANT CONNECTIONS

• Keep the coil connections sealed until refrigerant connections are made. See the Installation Instructions for the outdoor unit for details on line sizing, tubing installation, and charging information.
• The coil is shipped with “No charge”. Evacuate the system before charging with refrigerant.
• Install refrigerant tubing so that it does not block service access to the front of the unit.
• Nitrogen should flow through the refrigerant lines while brazing.
• Use a brazing shield to protect the cabinet’s paint and a wet rag to protect the rubber grommet from being damaged by torch flames.
• After the refrigerant connections are made, seal the gap around the connections with pressure pressure-sensitive gasket.

CONDENSATE DRAIN TUBING

• Consult local codes for specific requirements.

IMPORTANT:

1. When making drain fitting connections to the drain pan, use a thin layer of Teflon paste, silicone, or Teflon tape and install, hand tighten.
2. When making drain fitting connections to the drain pan, do not over-tighten. Over-tightening fittings can split pipe connections on the drain pan.
   • Install drain lines so they do not block service access to the front of the unit. A minimum clearance of 24 inches is required for filter, coil, or blower removal and service access.
   • Make sure the unit is level or pitched slightly toward the primary drain connection so that water will drain completely from the pan. (See Fig. 9)
   • Do not reduce the drain line size to less than the connection size provided on the condensate drain pan.
   • All drain lines must be pitched downward away from the unit a minimum of 1/8″per foot of line to ensure proper drainage.
   • Do not connect the condensate drain line to a closed or open sewer pipe. Run condensate to an open drain or run line to a safe outdoor area.
   • The drain line should be insulated where necessary to prevent sweating and damage due to condensation forming on the outside surface of the line.
   • Make provisions for disconnecting and cleaning the primary drain line should it become necessary. Install a 3-inch trap in the primary drain line as close to the unit as possible.
   • Make sure that the top of the trap is below the connection to the drain pan to allow complete drainage of the pan (See Fig 9).
   • The auxiliary drain line should be run to a place where it will be noticeable if it becomes operational. Homeowners should be warned that a problem exists if water begins running from the auxiliary drain line.
   • Plug the unused drain connection with the plugs provided in the parts bag, using a thin layer of teflon paste, silicone, or teflon tape to form a water-tight seal.
   • Test the condensate drain pan and drain line after installation is complete. Pour water into the drain pan, enough to fill the drain trap and line.
   • Check to make sure the drain pan is draining completely, no leaks are found in drain line fittings, and water is draining from the termination of the primary drain line.

AIR FILTER (not factory-installed

• An external filter or other means of filtration is required. Units should be sized for a maximum of 300 feet/min. air velocity or what is recommended for the type of filter installed.
• Filter application and placement are critical to airflow, which may affect the heating and cooling system performance. Reduced airflow can shorten the life of the system’s major components, such as the motor, limits, elements, heat relays, evaporator coil, or compressor. Consequently, we recommend that the return air duct system have only one filter location. For systems with a return air filter grill or multiple filter grills, can have a filter installed at each of the return air openings.
• If adding high-efficiency filters or electronic air filtration systems, the airflow mustn’t be reduced. If airflow is reduced the overall performance and efficiency of the unit will be reduced. It is strongly recommended that a professional installation technician is contacted to ensure the installation of these filtration systems are installed correctly.
• IMPORTANT: DO NOT DOUBLE FILTER THE RETURN AIR DUCT SYSTEM. DO NOT FILTER THE SUPPLY AIR DUCT SYSTEM. THIS WILL CHANGE THE PERFORMANCE OF THE UNIT AND REDUCE AIRFLOW.

WARNING

• Do not operate the system without filters. A portion of the dust entrained in the air may temporarily lodge In the duct runs and at the supply registers.
• Any circulated dust particles could be heated and charred by contact with the air handler elements. This residue could soil ceilings, walls, drapes, carpets, and other articles in the house.
• Soot damage may occur with filters in place when certain types of candles, oil lamps, or standing pilots are burned.

FILTER INSTALLATION DIMENSIONS

NOTE: The thickness of the filter should be within 1″[25mm].

AIR FILTER REMOVAL

1. Tear down the two bolts signed A and B, and take down the cover for the air filter, see Figure 4.
2. Hold the edge of the air filter and extract it out.
3. Clean the air filter (Vacuum cleaner or pure water may be used to clean the air filter. If the dust accumulation is too heavy, use a soft brush and mild detergent to clean it and dry it out in a cool place).

WIRING DIAGRAM

1. To avoid electrical shock, please connect the air conditioner with the ground lug. The main power plug in the air conditioner has been joined with the ground wiring, please don’t change it freely.
2. The power socket is used as the air conditioner specially.
3. Don’t pull the power wiring hard.
4. When connecting the air conditioner with the ground, observe the local codes.
5. If necessary, use the power fuse or the circuit, breaker, or the corresponding scale ampere.

Applicable to 18K/24K

ELECTRIC WIRING GAUGE

Note: The cross-section areas of wires or lines should not be less than the corresponding ones listed in the table below; Besides, if the power wires are quite long from the unit, please choose the windings with a larger cross- section area to guarantee the normal power supply.

Model ( cooling only type )| 18K| 24K| 30K| 36K| 42K| 48K| 60K
---|---|---|---|---|---|---|---
Line Gauge| Indoor Unit Power Line| Line Quantity| 3| 3| 3| 3| 3| 3| 3
Line Diameter(AWG)| 16| 16| 16| 16| 16| 16| 16
Outdoor Unit Power Line| Line Quantity| 3| 3| 3| 3| 3| 3| 3
Line Diameter(AWG)| 14| 14| 12| 12| 10| 10| 8
Indoor- Thermostat Singal Line| Line Quantity| 5| 5| 5| 5| 5| 5| 5
Line Diameter(AWG)| 18| 18| 18| 18| 18| 18| 18
Outdoor- Thermostat Singal Line| Line Quantity| 2| 2| 2| 2| 2| 2| 2
Line Diameter(AWG)| 18| 18| 18| 18| 18| 18| 18
Model ( cooling & heating type **)| 18K| 24K| 30K| 36K| 42K| 48K| 60K
---|---|---|---|---|---|---|---
Line Gauge| Indoor Unit Power Line| Line Quantity| 3| 3| 3| 3| 3| 3| 3
Line Diameter(AWG)| 16| 16| 16| 16| 16| 16| 16
Outdoor Unit Power Line| Line Quantity| 3| 3| 3| 3| 3| 3| 3
Line Diameter(AWG)| 14| 14| 12| 12| 10| 10| 8
Indoor- Thermostat Singal Line| Line Quantity| 5| 5| 5| 5| 5| 5| 5
Line Diameter(AWG)| 18| 18| 18| 18| 18| 18| 18
Outdoor- Thermostat Singal Line| Line Quantity| 5| 5| 5| 5| 5| 5| 5
Line Diameter(AWG)**| 18| 18| 18| 18| 18| 18| 18

References

• My Canadian Pharmacy: Looking After Your Wellbeing

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