CARRIER Evaporator Coils Manual L0211039
User Manual: CARRIER CARRIER Evaporator Coils Manual CARRIER Evaporator Coils Owner's Manual, CARRIER Evaporator Coils installation guides
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Installation and Start-Up Instruction Direct Expansion Horizontal Duct Coils CE3A / A_I_ Fig. 1---Model CE3A Coil NOTE: Read the entire instruction manual before starting the installation. SAFETY Improper installation, cause personal injury adjustment, or property CONSIDERATIONS alteration, service, maintenance, or use can cause explosion, fire, electrical shock or other conditions which may damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized packaged with the kits or accessories when installing. kits or accessories when modifying Follow all safety codes. Wear safety glasses and work gloves. Use quenching cloth for brazing these instructions thoroughly and follow all warning or cautions attached to the unit. Consult (NEC) for special requirements. It is important to recognize safety information. manuals, be alert to the potential for personal Understand the signal word DANGER, This is the safety-alert injury. WARNING, and CAUTION. symbol These z_ - When this product. Refer to the individual operations. Have fire extinguisher local building codes and National you see this symbol words are used with the safety-alert instructions available. Electrical on the unit and in instructions symbol. DANGER identifies most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal death. CAUTION is used to identify unsafe practices, which would result in minor personal injury or product and property damage. Form: IM-CE3A-05 Cancels: IM-CE3A-04 Pdnted in U.S.A. 7-02 Read Code Catalog No. 63CE-3A2 injury or the or WARNING: Before installing or servicing system, always turn off main power to system. There may be more than one disconnect switch. Turn off accessory heater power, if applicable. Electrical shock can cause personal injury or death. CAUTION: This coil contains Nitrogen precharge of 15PSI. Release of this pressure through the center of the rubber plugs is required before removing the plugs. IMPORTANT: of coil. Nitrogen can leak out through the hole that the needle pierced in the plugs. This does not indicate leaking coil nor warrant return INSTALLATION Use these instructions to install Model CE3A duct coil in horizontal position, (See Fig. 1.) Model CE3A duct coil is designed and tested to conform to recommendations and standards established by Air Conditioning and Refrigeration Institute (ARI) Standard 210. It is easily adaptable to most types of existing forced-air heating systems, or can be installed in an independent air-cooling system. PROCEDURE 1--CHECK EXISTING DUCTWORK Inspect the previously installed air distribution system for heating, to determine be modified and insulated to provide better air distribution for cooling. PROCEDURE 2--INSULATE AND VAPORPROOF its suitability for cooling. Existing heating ductwork may have to DUCT Externally insulated ductwork must have an adequate vapor seal for summer operation. This is particularly important where the duct is exposed to high humidity conditions in attics, vented crawl spaces, unconditioned basements and utility rooms. The vapor seal prevents condensation in the insulating material and subsequent loss of insulating value. Properly installed heating supply ducts should already have adequate insulation against excessive heat loss. This same insulation should, therefore, be satisfactory in the summer for protection against heat gain. However, depending on the specific installation, it may be desirable to add to the insulation. PROCEDURE 3--INSTALL COIL IN SUPPLY AIR DUCT 1. When the connecting air supply duct is smaller than the coil inlet opening, construct transition piece so that vertical and horizontal dimensions of transition piece do not increase more than 30 ° angle. If connecting outlet duct is smaller than outlet opening of coil, limit transition to maximum of 45 ° angle. 2. Provide at least 3 ft of straight duetwork preceding coil inlet. 3. Place coil in ductwork so metering device is on upstream side. (See Fig. 2.) Direction of airflow through coil is plainly marked with adhesive sticker. When access to refrigerant and drain lines is limited, the coil may be installed with air flow opposite the directional sticker. IMPORTANT: Reversal of air through coil results in 1-1/2 to 2 percent reduction in capacity of A024 through A060 size. 4. Install coil so that it pitches slightly (1/8 in.) toward condensate drain opening. Coils have drain opening on 1 side only. 5. Support coil from floor or suspend it When coil is suspended, provide adequate hangers to hold coil. NOTE: When coil is installed over a finished ceiling or living area, a secondary condensate pan must be constructed coil section. /,- and installed under entire l_he-IN. BRASS HEX NUT PISTON PLUG _ RETAINER _f d "- TEFLON SEAL _-"PISTON NUMBER STAMPED INTO SIDE OF NUT _-- COPPER TUBE 3/4-1N. BRASS HEX BODY A_2_ Fig. 2--Metering PROCEDURE Refrigerant 4--REFRIGERANT For matched LINES lines must be configured PROCEDURE 5--CONNECT and mismatched per local A. Suction building REFRIGERANT systems, The coil can be connected to outdoor and reclaim refrigerant when making CAUTION: required. Device codes. LIQUID Lay out lines in relation AND SUCTION use line sizes recommended in outdoor to specifications and job site requirements. LINES unit Installation Instructions. units using accessory refrigerant line sets or field-supplied lines of refrigerant grade. Always evacuate lines connections or flaring refrigerant lines. Leak check connections before insulating entire suction line. If unit is to be installed on system with a thermostatic expansion valve, removal of indoor coil piston is Line Suction line is designed for field sweat connection. Provide inverted loop on suction line if set exceeds 50 ft, per application has a rubber shipping plug to keep out moisture and dirt. Remove plug only when ready to make field sweat connection. --2-- guide. Sweat stub CAUTION: B. Liquid Liquid To avoid damage while brazing, wrap tubing or fitting with a heat-sinking material, such a wet cloth. Line line is designed for sweat connection. During installation these steps should be followed: 1. Replace piston if required. Check piston size stamped into side of brass hex nut. (gee Fig. 2.) If piston number piston shown on outdoor unit rating plate, replace indoor piston with piston shipped with outdoor unit. 2. When piston CAUTION: 3. Liquid is replaced, Remove stub has a rubber finger tighten Teflon seal shipping plus PROCEDURE during brazing. Replace plug to keep out moisture when and dirt. 1--Refrigerant NUMBER fitting Remove Metering has cooled. plug only when ready to make field sweat connection. Device TONNAGE METERING DEVICE PISTON NUMBER CE3AXA024000 2 59 CE3AXA030000 2-1/2 67 CE3AXA036000 3 70 CE3AXA042000 3-1/2 78 CE3AXA048000 4 84 CE3AXA0600_ 5 90 6_CONNECT CONDENSATE required 1/4 turn. Table MODEL does not match LINES The coil is designed to dispose of accumulated water through built-in condensate drain fittings. Two 3/4-in. female threaded pipe connections are provided in each coil condensate pan. Install a trap in condensate line as close to coil as possible. Make trap at least 3 in. deep and no higher than the bottom of unit condensate drain opening. (See Fig. 3.) Pitch condensate line 1 in. for every 10 ft of length to an open drain or sump: NOTE: If unit is located in or above a living space where damage may result from condensate overflow, a field-supplied, external condensate pan should be installed underneath entire unit, and a secondary condensate line (with appropriate trap) should be run from the unit into the pan. Any condensate in this external condensate pan should be drained to a noticeable place. As an alternative to using an external condensate pan, some localities may allow the running of a separate 3/4-in. condensate line (with appropriate trap) per local code to a place where the condensate will be noticeable. The owner of the structure must be informed that when condensate flows from secondary drain or external condensate pan, the unit requires servicing or water damage will occur. f COIL f <_ FAN UNIT AIRFLOW MIN _ i MUST BE BELOW DRAIN PAN LEVEL A91039 Fig. 3_Typical Trap Installation MAINTENANCE To ensure optimum performance and to minimize possible equipment problems, periodic maintenance must be performed on this equipment. Consult your dealer on proper frequency of maintenance and the availability of a maintenance contract. Proper maintenance on this equipment requires certain skills and tools. If you do not possess these, obtain qualified dealer assistance. /_ WARNING: Disconnect all electrical power to air handler (furnace) and outdoor unit before performing any maintenance or service on unit. Units may have more than 1 electrical power supply. A failure to adhere to this warning can cause personal injury. m3__ Minimum maintenance should 1. Check and clean 2. Check cooling NOTE: Because be performed or replace coil, on this equipment air filter each month, drain pan and condensate of possible damage WARNING: As with any mechanical careful when removing parts. A. drain to equipment, as follows: or as required. at start of each or personal injury, equipment, cooling season maintenance for cleanliness. should Clean as needed. be performed by qualified persons only. personal injury can result from sharp metal edges, etc.; therefore, be Air Filter An air filter is not provided ,x_an inte_ai part of this cooling coil. However, a field-supplied filter must be used upstream of the coil and must be inspected frequently. When filter becomes clogged with dust or lint, it should be replaced (disposable type) or cleaned (cleanable type). Inspect filter at least once each month, and replace or clean at least twice a year (more often if necessary). NOTE: Do not operate coil without a filter in place in return-air duct. Always replace filter with same size and type filter. _. WARNING: Before installing or servicing fan coil, always turn off all power to the unit. There may be more than 1 disconnect switch. Turn off accessory heater power if applicable. Electrical shock can cause personal injury or death. B. Condensate Pan and Drain Check drain pan and condensate drain at the same time cooling coil is checked. Clean drain pan and condensate drain thoroughly. Flush pan and drain tube with clear water. If drain tube or trap is restricted, clean with high-pressure water. If this does not work, try a plumber's snake or similar probe device. (See Fig. 3.) C. Cleaning Coil To gain access to coil, it may he necessary After cutting out section metal screws. of ductwork to cut a window and cleaning in ductwork. coil, cover opening with new, evenly cut piece of sheet metal and fasten in place with sheet Coil is easily cleaned when dry. Therefore, check and clean coil before each cooling season. Inspect coil periodically during cooling season. If coil is coated with dirt or lint, clean with a vacuum using soft brush attachment. BE CAREFUL NOT TO BEND COIL FINS. If coil is coated with oil or grease, D. disconnect and remove Replacing or Cleaning coil from ductwork. Then, clean coil with mild detergent and water solution. Rinse with clear water. Metering Device The piston of the metering device shipped with coil is used for most applications. However, for reliable, full capacity operation, use piston shipped with the outdoor unit in the indoor coil, if the piston in the indoor coil is different. I. Pump down outdoor unit. Shut off service valves at condensing /_ WARNING: personal injury. 2. Recover 3. Where Be sure all electrical remaining required, 4. Disconnect refrigerant remove refrigerant from liquid 5. Using knife, pry off piston wire, pull out piston cleaning piston, 8. Install new (or replace 9. Install new piston retainer cleaned) retainer piston (because and tighten refrigerant tube. deforming metering body, tubing t:12002 CACt_DP and coil, then check tubing end of metering service valve. causing device). device. or enlarge in metering of probable 10. Reconnect 12. Purge or evacuate gage port on suction device. body of metering not to scratch NOTE: To avoid overtighten. 1I. Pressurize metering (flare from be careful and coil through is turned off. A failure to adhere to this warning can cause from coil casing. tube from 6. Using small 7. When power to equipment tubing front panel unit. (See Fig. 2.) opening, device body. damage done piston to lodge as this will affect There in initial operation. is no front or back to piston. removal). in partially open or closed position, use a backup wrench and do not for leaks. and coil as necessary. 7310 W. Morris St.. Indianapolis, IN 46231 imce3a05 _ Book/Tab: 1/3d,2/4d Catalog No. 63CE-3A2
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