Ducane AC10B30-A HVAC Air Conditioner User Manual

Ducane AC10B30-A HVAC Air Conditioner

FEATURES

• Durable Copeland ®compressors, with internal pressure relief valves and inherent thermal protection
• High-quality Ducane-made condenser coil with copper tubing and enhanced louvered fin for maximum heat transfer capability
• Permanently lubricated condenser fan motor
• The top discharge directs hot air and sound away from the living area and shrubbery
• All units run tests
• Heavy-gauge, textured, pre-painted cabinet provides corrosion and abrasion protection
• Easy access to electrical panels, pre-wired for easy hook-up
• Hinged control panel allows simple access to internal components
• Service valve gauge ports are positioned to allow plenty of access room
• Warranties: 5-year parts; 5-year compressor (see warranty certificate for details)
• A liquid line filter drier is installed in every unit
• All units ETL, ETLC approved and ARI listed
• Charged for 15 feet of interconnecting tubing
• Crankcase heaters are standard on all 3-phase models with reciprocating compressors

UNIT DIMENSIONS

• T = 208/230V 3 Phase; F = 460V 3 Phase

UNIT SPECIFICATIONS

• Time delay fuse/HACR Breaker
• Refer to the national Electrical Code (or Canadian Electrical Code) to determine wire size, fuse and disconnect size requirements
• A field-supplied 7/8” to 1-1/8” adapter is required. The use of a 7/8” vapor line reduces performance by approximately 3 – 4%.

ACCESSORIES

SPLIT SYSTEM AIR CONDITIONER AND HEAT PUMP

INSTALLATION / START-UP INFORMATION

• These units are designed for use in residential and commercial-type buildings with a wide variety of Furnace/Air Handlers and Evaporator Coil combinations. Air-conditioners can be used with conventional forced warm air heating systems and/or straight cooling systems, independent of the heating. Heat pumps are sensitive to indoor units and may only be installed with combinations listed in the Air-Conditioning and Refrigeration Institute (ARI) Directory of Certified
  Products. After uncrating the unit, inspect thoroughly for hidden damage. If damage is found, notify the transportation company immediately and file a concealed damage claim.

Safety Precautions

1. Always wear safety eyewear, work gloves, and protective clothing when installing equipment.
2. Never assume electrical power is disconnected. Use a meter to verify that power is disconnected.
3. Keep hands out of fan areas when power is connected to equipment.

Unit Location

• The remote condensing unit is to be installed on a solid foundation. This foundation should extend a minimum of 2″ (inches) beyond the sides of the condensing unit and must be level. To reduce the possibility of noise transmission, the foundation slab should NOT be in contact with or be an integral part of the building foundation.
• The “top discharge” condenser air is taken in through the condenser coil and is discharged out the top. For quiet operation and maximum efficiency, eliminate any Obstructions that might interfere with air discharge. Zoning ordinances may govern the minimum distance the condensing unit can be installed from the property line.

DO NOT LOCATE THE UNIT:

• on brick, concrete blocks or unstable surfaces.
• near clothes dryer exhaust vents.
• near the sleeping area or near windows.
• under eaves where water, snow or ice can fall directly on the unit.

Refrigeration Line Sets

• Fully annealed refrigeration lines should be used when installing the system. DO NOT use copper water pipe. Refer to the unit specification sheet for proper line set sizes. Table 1 lists line set sizes if the specification sheet is not available. Split systems may be installed with up to 50 feet of line set (no more than 20 feet vertical) without special consideration. For other lengths, contact your distributor’s technical service.
  

  Table 1: Line set sizes
  Unit Size	Liquid Line	Vapor Line
  18	3/8″ *	5/8″
  24	3/8″ *	5/8″
  30	3/8″	3/4″
  36	3/8″	3/4″
  42	3/8″	7/8″
  48	3/8″	7/8″
  60	3/8″	1-1/8″ **

• It is important that no tubing be cut or seals broken until you are ready to make connections to the evaporator and to the condenser section. DO NOT
  remove rubber plugs or copper caps from the tube ends until ready to make connections at the evaporator and
  condenser. Under no circumstances should the lines open to the atmosphere for any period of time.
• Be extra careful with sharp bends. Tubing can “kink” very easily, and if this occurs, the entire tube length will have to be replaced. Extra care at this time will eliminate future service problems

Installation Of Line Sets

• DO NOT fasten liquid or suction lines in direct contact with the floor or ceiling joist. Use an insulated or suspension-type of hanger. Keep both lines separate, and always insulate the suction line. Long liquid line runs (30 feet or more). An attic will require insulation. Route refrigeration line sets to minimize length.
• DO NOT let refrigerant lines come in direct contact with the foundation. When running refrigerant lines through the foundation or wall, openings should allow for a sound and vibration-absorbing material to be placed or installed between the tubing and foundation. Any gap between the foundation or wall, and refrigerant lines should be filled with a pliable silicon-based caulk, RTV or a vibration-damping material

Evacuating And Charging Instructions

1. Connect the vacuum pump to the center hose of the manifold gauge set, the low-pressure manifold gauge to the vapor service valve and the high-pressure manifold gauge to the liquid service valve
2. The valves should be kept in the “front seated” (closed) position. This will allow evacuation of the refrigeration lines and the indoor coil, without disturbing the factory charge in the outdoor unit.
3. Follow the vacuum pump manufacturer’s instructions. Allow the pump to operate until the system has been evacuated down to 300 microns. Allow the pump to
   continue running for an additional 15 minutes. Turn OFF the pump and leave the connections secured to the two (2) service valves. After 5 minutes, if the
   system fails to hold 500 microns or less, check all connections for a tight fit and repeat the evacuation procedure.
4. Isolate the vacuum pump from the system by closing the shutoff valves on the gauge set. Disconnect the vacuum pump. Opening Service Valves After evacuation of the connecting lines, remove the service valve cap and fully insert the hex wrench into the stem. A backup wrench is required on the valve body to
   open the valve stem. Back out counterclockwise until the valve stem just touches the retaining ring

TXV System Charging

1. Operate the unit for a minimum of 10 minutes.
2. Measure pressure and temperature at the liquid valve service port. Use a good thermistor or electronic thermometer.
3. Subtract the measured temperature from the saturation temperature (of the measured pressure) to obtain subcooling. Refer to Table 4 for the saturation temperature of R-22.
4. The subcooling level should be as specified on the unit specification sheet. In the absence of the specification sheet, use 12-14°F subcooling.
   

   Table 4 – R-22 Saturation Temperature / Pressure Chart
   Pressure (psig)	Temp. (°F)	Pressure (psig)	Temp. (°F)	Pressure (psig)	Temp. (°F)	Pressure (psig)	Temp. (°F)	Pressure (psig)	Temp. (°F)	Pressure (psig)	Temp. (°F)
   19.3	-6	31.8	9	44.1	21	58.8	33	76.0	45	155.7	85
   20.8	-4	32.8	10	45.3	22	60.1	34	77.6	46	168.4	90
   22.4	-2	33.7	11	46.4	23	61.5	35	79.2	47	181.8	95
   24.0	0	34.7	12	47.6	24	62.8	36	80.8	48	195.9	100
   24.8	1	35.7	13	48.8	25	64.2	37	82.4	49	210.8	105
   25.6	2	36.7	14	49.9	26	65.6	38	84.0	50	226.4	110
   26.4	3	37.7	15	51.2	27	67.1	39	92.6	55	242.7	115
   27.3	4	38.7	16	52.4	28	68.5	40	101.6	60	259.8	120
   28.2	5	39.8	17	53.6	29	70.0	41	111.2	65	277.8	125
   29.1	6	40.8	18	54.9	30	71.4	42	121.4	70	296.7	130
   30.0	7	41.9	19	56.2	31	73.0	43	132.2	75	316.5	135
   30.9	8	43.0	20	57.5	32	74.5	44	143.6	80	337.4	140

Home Owner’s Information — Air Conditioners and Heat Pumps

Room Thermostat

• The wall-mounted thermostat controls your air conditioner. The thermostat is available in various configurations from different manufacturers. The
  information below is typical for most thermostats. Ask your dealer for specific information regarding the model of thermostat installed.
• For the Cooling Cycle, switch the room thermostat system lever to “Cool”. The thermostat will turn the air conditioner on or heat pump on in the cooling mode until the selected room temperature is achieved and then shut off automatically.
• For the Heating Cycle, switch the room thermostat system lever to “Heat”. The thermostat will turn the heat pump (or furnace) on in the heating mode until the selected room temperature is achieved and then shut off automatically.
• On heat pump systems only, sometimes an emergency heat setting “EM HT” is available on the thermostat, which will automatically cycle supplemental electric heat only to heat your home.

Air Filter

• Inspect air filters at least monthly and replace or clean as required. Disposable filters should be replaced. Washable filters may be cleaned by soaking in mild detergent and rinsing with cold water. Replace filters with the arrows pointing in the direction of airflow. Dirty filters are the most common cause of poor heating/cooling performance and compressor failures.
• Indoor Coil
• If the system has been operated with a clean filter in place, it should require minimal cleaning. Use a vacuum cleaner and soft brush attachment to remove any
  accumulation of dust from the top and underside of the finned coil surface. However, perform this maintenance only when the coil is completely dry. If the coil cannot be cleaned by this method, call your dealer for service. It may need a detergent solution and rinsing with water for cleaning, which may require coil
  removal. You should not attempt this yourself.
• Painted Surfaces
• For maximum protection of the unit’s finish, a good grade of automobile wax should be applied every year. In geographical areas where water has a high concentration of minerals (calcium, iron, sulfur, etc). It is recommended that lawn sprinklers not be allowed to spray the unit. In such applications, the sprinklers should be directed away from the unit. Failure to follow this precaution may result in the premature deterioration of the unit finish and metal components

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Ducane AC10B30-A HVAC Air Conditioner-FAQs