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BLD2023-0662_Manufacturer_Specifications_and_Installation_Instructions_5.31.2023_7.01.36_AM_35770224*0ieay SStidard 11-BC11 D1-9 HEATING & AIR CONDITIONING Installer's Guide Air Conditioner/Heat Pump 4A7A6/4A6H6 with AccuLinkT"" and Charge AssistTM ALL phases of this installation must comply with NATIONAL, STATE AND LOCAL CODES IMPORTANT —This Document is customer property and is to remain with this unit. Please return to service information pack upon completion of work. These instructions and illustrations do not cover all varia- tions in systems nor 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. Should further information be desired or should particular problems arise which are not covered sufficiently for the purchaser's purposes, the matter should be referred to your install- ing dealer or local distributor. A. GENERAL This information is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience. Any attempt to repair a central air conditioning product may result in personal injury and or property damage.The manufacturer or seller cannot be responsible for the interpretation of this information, nor can it assume any liability in connection with its use. NOTICE. American Standard Heating & Air Conditioning has always recommended installing approved matched indoor and outdoor systems. The benefits of installing approved matched systems are maximum efficiency, optimum performance and best overall system reliability. UNIT CONTAINS R-410A REFRIGERANT! R-410A OPERATING PRESSURE EXCEEDS THE LIMIT OF R-22. PROPER SERVICE EQUIPMENT IS REQUIRED. FAILURE TO USE PROPER SERVICE TOOLS MAY RESULT IN EQUIPMENT DAMAGE OR PERSONAL INJURY. SERVICE USE ONLY R-410A REFRIGERANT AND APPROVED POE COMPRESSOR OIL. NOTE. These units use R-410A refrigerant which operates at 50 to 70% higher pressures than R-22. Use only R-410A approved service equip- ment. Refrigerant cylinders are painted a "Rose" color to indicate the type of refrigerant and may contain a "dip" tube to allow for charging of liquid refrigerant into the system. All R-410A systems use a POE oil that readily absorbs moisture from the atmosphere.To limit this "hygroscopic" action, the system should remain sealed whenever possible. If a system has been open to the atmosphere for more than 4 hours, the compressor oil must be replaced. Never break a vacuum with air and always change the driers when opening the system for component replacement. For specific handling concerns with R-410A and POE oil, reference Retrofit Bulletin TRN-APG02-EN. 10 Single Unit Installation t 5' Above Unrestricted IIIIIII � Illllllllll""��"! �0111111 IIIIIIIIIIIIIIII I1111111111111ii w IIIIIIII IIIIIIIIIIIIIIII Illllllllllllll IIIIIIIIIIII IIIIIIIIIIIIIIII Illlllllll�llll IIIIIIIIIIII 3' ype\ .` p�iiiiiiiillljj I1I111111ID1111 IIIIIIIIIIII sere\ceP 1' Behind Illllllllllllll IIIIIIIIIIII From Check for transportation damage after unit is uncrated. Report promptly, to the carrier, any damage found to the unit. To determine the electrical power requirements of the unit, refer to the nameplate of the unit. The electrical power available must agree with that listed on the nameplate. B. LOCATION AND PREPARATION OFTHE UNIT (INFORMATION APPLICABLE TO HEAT PUMPS ONLY:) The Heat Pump has been designed and manufactured to withstand and operate in severe winter conditions. However, there are pre- cautionary steps which should be taken at the time of installation which will help assure the efficient operation of the unit. It is rec- ommended that these precautions be taken for units being installed in areas where snow accumulation and prolonged below freezing temperatures occur. 1. Units should be elevated three (3) to twelve (12) inches above the pad or rooftop, depending on local weather. This additional height will allow drainage of snow and ice (melted during defrost cycle) prior to its refreezing. This reduces the chance of ice build-up around the unit which occurs when unit is not elevated. Insure that drain holes in unit base pan are not obstructed preventing draining of defrost water. 2. If possible, avoid locations that are likely to accumulate snow drifts. If not possible, a snow drift barrier should be installed around the unit to prevent a build-up of snow on the sides of the unit and should be of sufficient distance from the unit to prevent restriction of airflow to and from the unit (see note 3, next section). Also allow for proper maintenance space. The barrier should be constructed of materials which will blend in with the building design. 3. Avoid locating the unit where condensation and freezing of defrost vapor may annoy the customer. For instance, installing the unit under a bedroom, kitchen, or picture window may be annoying to the customer since condensate and fog will occur during the defrost cycle. 4. Avoid locating the unit under the eaves or other overhead structures as sizeable icicles may form and the unit may be damaged by these falling icicles. Installer's Guide OBASEPAN REMOVE TAB REMOVAL TABS AS SHOWN OF (INFORMATION APPLICABLE TO ALL UNITS:) 1. When removing unit from the pallet, notice the tabs on the basepan. Remove tabs by cutting with a sharp tool as shown in Figure 2 and slide unit off of pallet. 2. The unit should be set on a level support pad at least as large as the unit base pan, such as a concrete slab. If this is not the application used please refer to Application Guide SSC- APG008-EN. 3. The support pad must NOT be in direct contact with any struc- ture. Unit must be positioned a minimum of 12" from any wall or surrounding shrubbery to insure adequate airflow. Clearance must be provided in front of control box (access panels) and any other side requiring service access to meet National Electrical Code. Also, the unit location must be far enough away from any structure to prevent excess roof run-off water from pouring directly on the unit. Do not locate unit(s) close to bedroom(s). 4. The top discharge area must be unrestricted for at least five (5) feet above the unit. See Figure 1. 5. When the outdoor unit is mounted on a roof, be sure the roof will support the unit's weight. Properly selected isolation is recommended to prevent transmission to the building structure. 6. The maximum length of refrigerant lines from outdoor to indoor unit should NOT exceed sixty (60) feet. 7. If outdoor unit is mounted above the air handler, maximum lift should not exceed twenty-five (25) feet (suction line). If air han- dler is mounted above condensing unit, maximum lift should not exceed twenty-five (25) feet (liquid line). 8. Locate and install indoor coil or air handler in accordance with instruction included with that unit. C. INSTALLING REFRIGERANT LINES If using existing refrigerant lines make certain that all joints are brazed, not soldered. Condensing units have provisions for braze connections. Pressure taps are provided on the service valves of outdoor unit for compressor suction and liquid pressures. The indoor end of the recommended refrigerant line sets may be straight or with a ninety (90) degree bend, depending upon applica- tion requirements. This should be thoroughly checked out before ordering refrigerant line sets. NOTE: The gas line must always be insulated. The units are factory charged with the system charge required when using fifteen (15) feet of rated connecting line. See unit nameplate. HOT SURFACE! DO NOT TOUCH TOP OF COMPRESSOR. May cause minor to severe burning. Final refrigerant charge adjustment is necessary. Use Charge Assist" or the Manual Charging procedure found in the outdoor unit Service Facts. Charge level can always be verified with the Refrigerant Charging Chart found in the Service Facts. 1. Determine the most practical way to run the lines. 2. Consider types of bends to be made and space limitations. NOTE: Large diameter tubing will be very difficult to rebend once it has been shaped. 3. Determine the best starting point for routing the refrigerant tubing — INSIDE OR OUTSIDE THE STRUCTURE. 4. Provide a pull-thru hole of sufficient size to allow both liquid and gas lines. 5. Be sure the tubing is of sufficient length. 6. Uncoil the tubing — do not kink or dent. 7. Route the tubing making all required bends and properly secure the tubing before making connections. 8. To prevent a noise within the building structure due to vibra- tion transmission from the refrigerant lines, the following precautions should be taken: a. When the refrigerant lines have to be fastened to floor joists or other framing in a structure, use isolation type hangers. b. Isolation hangers should also be used when refrigerant lines are run in stud spaces or enclosed ceilings. c. Where the refrigerant lines run through a wall or sill, they should be insulated and isolated. d. Isolate the lines from all ductwork. D. SERVICE VALVE OPERATION BRASS LIQUID LINE SERVICE VALVE The Brass Liquid Line Service Valve is factory shipped in the seated position to hold factory charge. The pressure tap service port (when depressed) opens only to the field brazing side of the valve when the valve is in the seated position. The liquid line valve is not a back seating valve (see WARNING below). Extreme caution should be exercised when opening the Liquid Line Service Valve. Turn valve stem counterclockwise only until the stem contacts the rolled edge. (See Figure 3). No torque is required. Failure to follow this warning will result in abrupt re- lease of system charge and may result in personal injury and/or property damage. BRASS GAS LINE BALL SERVICE VALVE The Brass Gas Line Service Valve is shipped in the closed position to hold the factory refrigerant charge. The pressure tap service port (when depressed) opens only to the field brazing side when the valve is in the closed position. The Gas Line Ball Service Valve is full open with a 1/4 turn. See Figure 4. BRAZING REFRIGERANT LINES 1. Remove lower access cover to access service valves. 2. Before brazing, remove plugs from external copper stub tubes. Clean internal and external surfaces of stub tubes prior to brazing. 3. Cut and fit tubing, minimizing the use of sharp 90' bends. 4. Insulate the entire gas line and its fittings. 5. Do NOT allow uninsulated liquid line to come in direct con- tact with bare gas line. O LIQUID LINE SERVICE VALVE ROLLED EDGE TO CAPTIVATE STEM CAP - UNIT SIDE OF HEX HEADED SERVICE VALVE VALVE SYSTEM SERVICE / PORT / LIQUID LINE CONNECTION © 2011 American Standard Heating & Air Conditioning 11-BCl l D1-9 Installer's Guide O GAS LINE BALL SERVICE VALVE UNIT SIDE OF VALVE PRESSURE CAP 1/4 TURN ONLY COUNTERCLOCKWISE \ FOR FULL OPEN SITION ITEM GAS LINE CONNECTION 6. Precautions should be taken to avoid heat damage to the pressure tap valve core during brazing. It is recommended that the pressure tap port valve core be removed and a wet rag wrapped around the valve body. NOTE: Use care to make sure that no moisture enters pressure tap port, while wet rag is being used. NOTE: Precautions should be taken to avoid heat damage to basepan during brazing. It is recommended to keep the flame directly off of the basepan. 7. Use a Dry Nitrogen Purge and Brazing Alloy without flux when brazing the field line to the copper factory connection. Flow dry nitrogen into either valve pressure tap port, thru the tubing and out the other port while brazing. 8. Braze using accepted good brazing techniques. LEAK CHECK IMPORTANT: Replace pressure tap port valve core before attaching hoses for evacuation. After the brazing operation of refrigerant lines to both the outdoor and indoor unit is completed, the field brazed connections must be checked for leaks. Pressurize through the service valve ports, the indoor unit and field refrigerant lines with dry 400 psi. Use soap bubbles or other leak -checking mAtbon to that all field joints are leak -free! If not, release pressure; then repair! SYSTEM EVACUATION NOTE: Since the outdoor unit has a refrigerant charge, the gas and liquid line valves must remain closed. 1. Upon completion of leak check, evacuate the refrigerant lines and indoor coil before opening the gas and liquid line valves. 2. Attach appropriate hoses from manifold gauge to gas and liquid line pressure taps. NOTE: Unnecessary switching of hoses can be avoided and complete evacuation of all lines leading to sealed system can be accom- plished with manifold center hose and connecting branch hose to a cylinder of R-410A and vacuum pump. 3. Attach center hose of manifold gauges to vacuum pump. 4. Evacuate until the micron gauge reads no higher than 350 mi- crons. 5. Close off valve to vacuum pump and observe the micron gauge. If gauge pressure rises above 500 microns in one (1) minute, then evacuation is incomplete or system has a leak. 6. If vacuum gauge does not rise above 500 microns in one (1) minute, the evacuation should be complete. 7. With vacuum pump and micron gauge blanked off, open valve on R-410A cylinder and charge refrigerant lines and indoor coil with vapor to tank pressure of R-410A supply. 8. Close valve on R-410A supply cylinder. Close valves on mani- fold gauge set and remove refrigerant charging hoses from liquid and gas pressure tap ports. NOTE: DO NOT VENT REFRIGERANT INTO THE ATMOSPHERE. NOTE: A 3116" Allen wrench is required to open liquid line service valve. A 114" Open End or Adjustable wrench is required to open gas line valve. A 314" Open End wrench is required to take off the valve stem cap. 9. The liquid line shut-off valve can now be opened. Remove shut-off valve cap. Fully insert hex wrench into the stem and backout counterclockwise until valve stem just touches rolled edge (approximately five [51 turns) observing WARNING statement on page 2. See Figure 3. 10. Replace liquid service pressure tap port cap and valve stem cap. These caps MUST BE REPLACED to prevent leaks. Replace valve stem and pressure tap cap finger tight, then tighten an additional 1/6 turn. 11. The gas valve can now be opened. For a ball type gas valve, open the gas valve by removing the shut-off valve cap and turn- ing the valve stem 1/4 turn counterclockwise, using 1/4" Open End or Adjustable wrench. See Figure 4 and refer to Step 8 prior to opening gas valve. 12. The gas valve is now open for refrigerant flow. Replace valve stem cap to prevent leaks. Again, these caps MUST BE RE- PLACED to prevent leaks. Replace valve stem and pressure tap cap finger tight, then tighten an additional 1/6 turn. See Figure 4. If refrigerant lines are longer than fifteen (15) feet and/or a different size than recommended, it will be necessary to adjust system refrigerant charge upon completion of installation. See unit Service Facts. E. ELECTRICAL CONNECTIONS Live Electrical Components! During installation, testing, servicing and troubleshooting of this product, it may be necessary to work with live electrical components. Failure to follow all electrical safety precautions when exposed to live electrical components could result in death or serious injury. 1. Power wiring and grounding of equipment must comply with national, state and/or local codes. 2. Power supply must agree with equipment nameplate. 3. Install a separate disconnect switch at the outdoor unit. 4. Ground the outdoor unit per code requirements. 5. Provide flexible electrical conduit whenever vibration trans- mission may create a noise problem within the structure. 6. The use of color coded low voltage wire is recommended to simplify connections between the outdoor unit, the AccuLinkTM control and the indoor unit. Table 1 — NEC Class H Control Wiring AccuLinkTM Control Wiring WIRE SIZE MAX. WIRE LENGTH 18 AWG 250 FT NOTE: The maximum total cable length for the entire Comfort Control communicating system is 500 ft. 18 AWG. 7. Mount the AccuLinkTM control in accordance with instruction included with the AccuLinkTM control. Wire per appropriate hook-up diagram (included in these instructions). 11-BCl l D1-9 Installer's Guide F. DEFROST CONTROL(HEAT PUMPS ONLY) The demand defrost control measures heat pump outdoor ambi- ent temperature with a sensor located outside the outdoor coil. A second sensor located on the outdoor coil is used to measure the coil temperature. The difference between the ambient and the colder coil temperature is the difference or delta-T measurement. This delta-T measurement is representative of the operating state and relative capacity of the heat pump system. By measuring the change in delta-T, we can determine the need for defrost. The coil sensor also serves to sense outdoor coil temperature for termina- tion of the defrost cycle. FAULT IDENTIFICATION A fault condition is indicated by the fault LED on the control board inside the heat pump control box. In normal operation, the status LED will flash once each second. If the light is flashing more than once per second or not at all, refer to the Service Facts for that unit. O PIN 0 0 IDENTIFICATION 0 U Cn Yn LU IL 0 LL■ ■F PIN IDENTIFICATION (SEE FIGURE 5.) 1. TEST_COMMON (Shorting any of the other pins to this pin causes the function of the other pin to be executed. Leaving this pin open results in the normal mode of operation.) 2. TST = Test (Shorting TEST —COMMON to this pin speeds up all defrost board timings.) 3. FRC_DFT = Forced Defrost (Short TEST _COMMON to this pin for two [2] seconds to initiate a forced defrost. Remove the short after defrost initiates.) DEFROST CONTROL CHECKOUT Normal operation requires: a. Status LED on board flashing 1 time/second. b. 12VDC between D & B. c. Defrost initiation when FRC_DFT pin is shorted to TEST_ COMMON pin. If a defrost control problem is suspected, refer to the service infor- mation in control box. G. COMPRESSOR STARTUP After all electrical wiring is complete, SET THE ACCULINKTM CONTROL SWITCH IN THE OFF POSITION SO COMPRESSOR WILL NOT RUN, and apply power by closing the system main dis- connect switch. This will activate the compressor sump heat (where used). Do not change the AccuLinkTM control Switch until power has been applied for one (1) hour. Following this procedure will pre- vent potential compressor overload trip at the initial start-up. © FIELD WIRING DIAGRAM COMMUNICATING INDOOR UNIT - COMMUNICATING OUTDOOR UNIT COMMUNICATING COMMUNICATING MODE COMMUNICATING COMFORT CONTROL INDOOR UNIT OUTDOOR UNIT NOTE: For non - communicating systems use 24-volt harness accessory BAYACH P024A. I FGFND ...... FACTORY WIRING FIELD WIRING TERMINAL MAY T OR MAY NOT BE PRESENT ON UNIT NOTES: I. SEE WIRING DIAGRAMS IN SERVICE FACTS FOR COMPLETE WIRING INFORMATION. 2. LOW VOLTAGE WIRING TO BE NO. 18 AWG MINIMUM CONDUCTOR. 3. BE SURE POWER SUPPLY AGREES WITH EQUIPMENT NAMEPLATE. POWER WIRING AND GROUNDING OF EQUIPMENT MUST COMPLY WITH LOCAL CODES. 4. IN COMMUNICATING MODE, UNUSED TERMINALS ARE NOT FUNCTIONAL. DO NOT USE. S. 'D' IS THE DATA LINE, INSTALLER TO SELECT A WIRE COLOR. 6. TO CONNECT OPTIONAL DEVICES (SUCH AS A FLOAT SWITCH) WIRE IN SERIES FROM INDOOR 'R" TO COMFORT CONTROL 'R". T. WHEN CONVERTING OUTDOOR UNIT TO 24 VAC MODE, USE 24 VAC HARNESS ACCESSORY (BAYACHP024s). PRINTED FROM D802614POI REV01 4 11-BCl l D1-9 Installer's Guide 07 4TEE3C01-10 AIR HANDLERS WITH 24V COMFORT CONTROL, 24V 2-STAGE OR 2-STEP COOLING TYPICAL 24 VAC COMFORT CONTROL 24 VAC MODE 24 VAC OUTDOOR UNIT (SEE CONTROL INSTALLER'S GUIDE) INDOOR UNIT 2-STAGE OR 2-STEP AC I FCFNO ------ FACTORY WIRING FIELD WIRING a TERMINAL MAY T OR MAY NOT BE PRESENT ON UNIT NOTES: I. SEE WIRING DIAGRAMS IN SERVICE FACTS FOR COMPLETE WIRING INFORMATION. 2. LOW VOLTAGE WIRING TO BE NO. 18 AWG MINIMUM CONDUCTOR. 3. BE SURE POWER SUPPLY AGREES WITH EQUIPMENT NAMEPLATE. POWER WIRING AND GROUNDING OF EQUIPMENT MUST COMPLY WITH LOCAL CODES. 4. OPTIONAL FIELD WIRING. CONNECT ONLY IF THESE HEATING STAGES ARE USED. 5. CONNECTIONS TO "R" , "OK", AND "0' MUST BE MADE AS SHOWN FOR PROPER OPERATION WITH OPTIONAL HUMIDISTAT IN COOLING. FACTORY -R. TO "BK" JUMPER ON TERMINAL BLOCK MUST BE REMOVED ON AIR HANDLING UNITS. FACTORY 'R' TO "BK" JUMPER ON FURNACE CONTROL MUST BE CUT ON FURNACES. 6. SEE USER INTERFACE 24 VAC MODE SETUP MENU FOR IST STAGE CFM OPTIONS. 2-STAGE = 39-64% 2-STEP = 65-80% PRINTED FROM D802614PO4 REV01 ® 4TEE3C01-10 AIR HANDLERS WITH 24V COMFORT CONTROL, 24V 2-STAGE OR 2-STEP HEAT PUMP TYPICAL 24 VAC COMFORT CONTROL 24 VAC MODE 24 VAC OUTDOOR UNIT (SEE CONTROL INSTALLER'S GUIDE) INDOOR UNIT 2-STAGE OR 2-STEP HP I FGFNO ------ FACTORY WIRING FIELD WIRING Q TERMINAL MAY T OR MAY NOT BE PRESENT ON UNIT NOTES: I. SEE WIRING DIAGRAMS IN SERVICE FACTS FOR COMPLETE WIRING INFORMATION. 2. LOW VOLTAGE WIRING TO BE N0. 18 AWG MINIMUM CONDUCTOR, 3. BE SURE POWER SUPPLY AGREES WITH EOUIPMENT NAMEPLATE. POWER WIRING AND GROUNDING OF EQUIPMENT MUST COMPLY WITH LOCAL CODES. 4. OPTIONAL FIELD WIRING, CONNECT ONLY IF THESE HEATING STAGES ARE USED. 5. CONNECTIONS TO "R" , "BK", AND -0- MUST BE MADE AS SHOWN FOR PROPER OPERATION WITH OPTIONAL HUMIDISTAT IN COOLING. FACTORY "R' TO "OK' JUMPER ON TERMINAL BLOCK MUST BE REMOVED ON AIR HANDLING UNITS. FACTORY "R' TO "OK' JUMPER ON FURNACE CONTROL MUST BE CUT ON FURNACES. 6. ON FURNACE APPLICATIONS, COMFORT CONTROL MUST BE DUAL FUEL COMPATIBLE (SEE CONTROL INSTALLERS GUIDE) OR MUST USE TAYPLUS103. 1. SEE USER INTERFACE 24 VAC MODE SETUP MENU FOR IST STAGE CFM OPTIONS. 2-STAGE = 39-64% 2-STEP - 65-80% PRINTED FROM D80261006 REV01 11-BC11 D1-9 5 Installer's Guide ce 4TEE3F 31-65 FIELD WIRING DIAGRAMS FOR 4A7A6 MODELS ONLY VARIABLE SPEED 2STEP T'STAT AIR HANDLER AIR CONDITIONER PRINTFO FROM 0ISd0171)02 FIELD WIRING DIAGRAMS FOR 4A7A6 MODELS ONLY VARIABLE SPEED 2 STAGE T'STAT 2 STAGE FURNACE AIR CONDITIONER PRINTED FROM D154018P02 AIR HANDLER G O B W3 W2 W1 ® IJF FIF [1)]TMD 71)] � VDIT FT M M Jumper See Note B (page 7) Notes: 1. Be sure power supply agrees with equipment nameplate. 2. Power wiring and grounding of equipment must comply with local codes. 3. Low voltage wiring to be No. 18 AWG mini- mum conductor. 4. If outdoor thermostat (ODT) is not used, con- nect W2 to W3. 5. Be sure the jumper between "R" and "BK" is cut or removed (See Note B below). 6. With "0" and "Y/Y2" energized, indoor fan is at 80 % airflow. 7. With "0", "Y/Y2" and "BK" energized, indoor fan is at 100 % airflow. FURNACE The Factory installed jumper be- tween "R" and "BK" on the Furnace circuit board must be cut. See Note B (page 7) O� BLKffMN W2 W1 R G B Y YLO 0 ®®®®®®@ BLKnVAN W2 W1 R G B Y YLO 0 P O LEGEND -- - - - FACTORYWIRING FIELD WIRING 6 11-BC11 D1-9 Installer's Guide 11 FIELD WIRING DIAGRAMS FOR 4A6H6 MODELS ONLY VARIABLE SPEED T'STAT AIR HANDLER 2-STEP HEAT PUMP PRINTED FROM D154050POI Notes: 1. ODT-B must be set lower than ODT-A. 2. If ODT-B is not used, connect A Jumper wire from W3 to W2. If ODT-A is not used, connect a jumper wire from W2 to W1. 3. If electric heat does not have 3rd contactor (CH), connect a jumper wire from W3 to W2. If electric heat does not have 2nd contactor (BH), con- nect a jumper wire from W2 to W1. 4. X2 must be connected to variable speed air handler terminal W3, as shown, for proper indoor air flow during the defrost cycle. 5. Connect only if used with applicable indoor thermostat. LEGEND - - - - -FACTORY WIRING FIELD WIRING REQUIRED WIRING • Refer to Field Hook-up Diagrams above. • 4A7A6/4A6H6 units require 80% airflow with "Y1" (firststage), 100% airflow with "Y2" (second stage). Note A — The installer must jumper at the LVTB "R" to "O". Note B — Cut/remove the factory installed "BK" jumper. • Connect "Y1" from thermostat to "Y/Y2" at VS Air Handler/VS Furnace to "Y1" at Outdoor Unit. • Connect "Y2" from thermostat to "BK" at VS Air Handler/VS Furnace to "Y2" at Outdoor Unit. 11-BC11 D1-9 7 Installer's Guide 12 CHARGE ASSISTTM LOW ODT O PRESSURE OUT OF RANGE E■] E■] MODE CHARGING (STABILIZING) ADD REC STATUS E:] [:] [■] FAULT Y1 CHARGED EN] E'] C■] TEST j* CC LU CCn 0 o a U I 0 II TEST S LJ COM I� L 1 SELECT- eOE] e FRC COM 0 1 2 3 DEF [■] LINE LENGTH 13 CHARGE ASSISTTM PORT Charge Assist' Port V O m NOTE: Charge AssistTM port is designed for liquid refrigerant charging. DIRECTION FOR CHARGE ASSISTTM NOTE. Outdoor Temperature (ODT) must be between 55°F and 120°F. Be sure to set Dip Switches for Line Length and Lift before enter- ing Charge AssistTM Mode. (See Subcool Charging Table Correc- tions for Line Length and Rise in the Service Facts for the outdoor unit.) To enter Charge AssistTM Mode, press the MODE button for at least one (1) second. The on -board LEDs will indicate if the system is capable of continuing. For a detailed description of on -board LEDs and their function, see the Service Facts. The system will take approximately 12-20 minutes to stabilize before the charge can be checked by Charge AssistTM. Once the system is stabilized, watch to see which LED turns on next. If the system charge is correct, the "CHARGED" LED will turn on and re- main on for one (1) hour. Once charged, the system will exit Charge AssistTM and control will return to the Comfort Control. If the system charge is low, the "ADD" LED will turn on and stay on up to one (1) hour or until enough refrigerant is added to reach the required system charge level and turn on the "CHARGED" LED. When the "ADD" LED is on, the charging solenoid output will be active. This feature works to automatically control refrigerant flow with BAYCAKT001. If the system charge is high, the "REC" LED will turn on and the unit will exit Charge AssistTM. You must recover refrigerant from the system before re-entering Charge AssistTM For instructions on the Charge AssistTM tool BAYCAKT001, see the Installer's Guide 18-HH15D1-* (the position of the * denotes the latest revision number). For additional information on manual charging, please see the Service Facts shipped with the outdoor unit. SUBCOOL CHARGING TABLE CORRECTIONS FOR LINE LENGTH AND RISE 60 W 50 Z W 40 WQ W 304LOWER u 25 Fr J 20IDDLE 15Dip UPPER Dip Switch 3-ON LL W W Z 10 Switch 2-ON � J 0 Dip Switch 1-ON 10 20 25 30 40 60 80 TOTAL REFRIGERANT LINE LENGTH (FEET) 8 11-BCl l D1-9 Installer's Guide H. OPERATIONAL AND CHECKOUT PROCEDURES Final phases of this installation are the unit Operational and Checkout Procedures which are found in this instruction on page 11. To obtain proper performance, all units must be operated and charge adjustments made in accordance with procedures found in the Service Facts. IMPORTANT.• Perform a final unit inspection to be sure that factory tubing has not shifted during shipment. Adjust tubing if necessary so tubes do not rub against each other when the unit runs. Also be sure that wiring con- nections are tight and wire routing is secure. I. ELECTRIC HEATERS Electric heaters, if used, are to be installed in the air handling device according to the instructions accompanying the air handler and the heaters. J. SEACOAST SHIELD If installed within one mile of salt water, including seacoasts and inland waterways, models without factory supplied Seacoast Salt Shields require the addition of BAYSEAC001 (Seacoast Kit) at in- stallation time. Please refer to Application Guide SS-APBO07-EN: American Standard HVAC - Sea Coast Applications. IMPORTANT. See Limited Warranty information in Use and Care Manual. TROUBLESHOOTING CHART WHAT TO CHECK - -. ,- •- SYSTEM FAULTS REFRIGERANT CIRCUIT Head Pressure Too High -.d Pressure oo Low0■■■■■■■■■■■■■©0■■■■■©©■©©©0■■ Suction Pressure Too High Suction Pressure Too Low ©■■■■■■■■■■■■■■■o■■©©■©■■■©■■■ I.D.. o■■■■■■■■■■■■■■o■■■©©■■■■■■■■■ Compressor Runs Inadequate .,.... o■■■■■■■■■■■■■©o■©©■■■©o©©©©■■ ©■■■■■■■■■■■■■©o■■©■■■©o©©■©■■ Compressor :,, Fan Won't Start 000■■■■■©o©oo■■■■■■■■■■■■■■■■■ ©oo■■■■■©o©oo■■■■■■■■■■■■■■■■■ CompressorBut O.D. Fan Runs o■o©o©©©■■■■■o■■■■■■■■■■■■■■■■ O.D.. o■o■o■■©■■■■■■■■■■■■■■■■■■■■■■ Compressoro■■■o©©©■■■■■o■■■■■■■■■■■■■■■■ Compressor ,,I. o■o©o©©©■■■■■o©oo©■©©■©■■©■■■■ ,:, 000■■■■■©o©■©■■■■■■■■■■■■■■■■■ Unit Won't Initiate Defrost o■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ Defrosto■■■■■■■■■■■■■■■■■■■■■■■■■■■■■ C - Cooling H - Heating P - Primary Causes S - Secondary Causes * - 3 Phase Only 11-BCl l D1-9 9 Installer's Guide 14 4A7A6/4A6H6 OUTLINE DRAWING NOTE: ALL DIMENSIONS ARE IN MM (INCHES). SERVICE PANEL ELECTRICAL AND REFRIGERANT COMPONENT CLEARANCES PER PREVAILING CODES. TOP DISCHARGE AREA SHOULD BE UNRESTRICTED FOR AT LEAST 1524 (5 FEET) ABOVE UNIT. UNIT SHOULD BE PLACED SO ROOF RUN-OFF WATER DOES NOT POUR DIRECTLY ON UNIT, AND SHOULD BE AT LEAST 305 (12') FROM WALL AND ALL SURROUNDING SHRUBBERY ON TWO SIDES. OTHER TWO SIDES UNRESTRICTED. - ..-..-..-.. ELECTRICALS SERVICE PANEL 22.2 (7/8) DIA. HO LOW VOLTA 28.6 (1-1111 DIA. K WITH 22.2 (7/8) D HOLE IN CONTROL BOTTOM FOR ELECTRIC POWER SUP LIQUID LINE SERVICE - VALVE, "E" I.D. FE4 BRAZE CONNECTION WITH I/4 .. SAE FLARE PRESSURE TAP FITTING K 25 111 A E IE 0. A. 10% IL I 'LY i E H F - _11 rr FIG. 1 J K.O. FOR ALTERNATE G ELECTRICAL ROUTING AS LINE 111 TURN BALL SERVICE VALVE, 'D" I.D. FEMALE BRAZED CONNECTION WITH 1/4 SAE FLARE PRESSURE TAP FITTING. MODELS BASE A B C D E F G H J K 4A7A6024C 4A6H6024C 3 933 (36-3/4) 829 (32-5/8) 756 (29-3/4) 5/8 5/16 143 (5-5/8) 92 (3-5/8) 210 (8-1/4) 79 (3-1/8) 508 (20) 4A7A6036C 4 841 (33-1/8) 946 (37-1/4) 870 (34-1/4) 3/4 3/8 152 (6) 98 (3-7/8) 219 (8-5/8) 86 (3-3/8) 508 (20) 4A6H6036C 4 943 (37-1/8) 946 (37-1/4) 870 (34-1/4) 3/4 3/8 152 (6) 98 (3-7/8) 219 (8-5/8) 86 (3-3/8) 508 (20) 4A7A6048C 4A7A6060C 4A6H6048C 4 1045 (41- 17/8) 946 (37-1/4) 870 (34-1/4) 7/8 3/8 152 (6) 98 (3-7/8) 219 (8-5/8) 86 (3-3/8) 508 (20) 4A6H6060C From Dwg. D152862 Rev. 22 10 11-BC11 D1-9 Installer's Guide 15 MOUNTING HOLE LOCATION NOTE: ALL DIMENSIONS ARE IN MM (INCHES). BASE 4 .28) From Dwg. D152637 Rev. 2 CHECKOUT PROCEDURE After installation has been completed, it is recommended that the entire system be checked against the following list: 1. Refrigerant Line, Leak checked ............................................ [ 2. Suction Lines and Fittings properly insulated ..................... [ 3. Have all Refrigerant Lines been secured and isolated properly?................................................................... [ 4. Have passages through masonry been sealed? If mortar is used, prevent mortar from coming into direct contact with copper tubing .................................. [ 5. Verify tightness of all electrical connects ............................. [ 6. Observe outdoor fan during on cycle for clearance and smooth operation............................................................ [ 7. Indoor coil drain line drains freely. Pour water intodrain pan......................................................................... [ 8. Supply registers and return grilles open and unobstructed........................................................................... [ 9. Return air filter installed...................................................... [ 10. AccuLinkTM control is accurate. Check against a reliable thermometer. Adjust per instructions with AccuLinkTM control ................................... [ 11. Is correct airflow setting used? (Indoor blower motor)............................................................ [ 12. Operate complete system in each mode to insure safe operation............................................................. [ 11-BCl l D1-9 11 Installer's Guide Amw a" Si�tfft*rd HEATING & AIR CONDITIONING 03/11 American Standard Heating & Air Conditioning www.americanstandardair.com American Standard Heating & Air Conditioning has a policy of continuous product and product data improvement and it reserves the right to change design and specifications without notice.