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Application Guide and
Service Manual
AIR CONDITIONERS AND HEAT PUMPS
USING R-22 REFRIGERANT
Cancels: AP01-3, SM01,02-4 SM01,02-5
10-00
NOTE: Read the entire instruction manual before starting the Fan Motors..............................................................................21
installation. Service Alarm Control Board.................................................21
Outdoor Thermostat(s)............................................................22
This symbol → indicates a change sin
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Refrigeration system contains refrigerant under pressure. Extreme 6. If suction-line filter drier was installed for system clean up, caution should be observed when handling refrigerants. Wear operate system for 10 hr. Monitor pressure drop across safety glasses and gloves to prevent personal injury. During drier. If pressure drop exceeds 3 psig, replace suction-line normal system operation, some components are hot and can cause and liquid-line filter driers. Be sure to purge system with burns.
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TABLE 1—REQUIRED FIELD-INSTALLED ACCESSORIES FOR AIR CONDITIONERS AND HEAT PUMPS REQUIRED FOR REQUIRED FOR REQUIRED FOR LOW-AMBIENT LONG-LINE SEA COAST ACCESSORY APPLICATIONS APPLICATIONS* APPLICATIONS (BELOW 55°F) (OVER 50 FT) (WITHIN 2 MILES) Crankcase Heater Yes Yes No Evaporator Freeze Thermostat Yes No No Winter Start Control Yes† No No Accumulator No No No Compressor Start Assist Yes Yes No Capacitor and Relay Low Ambient Controller, MotorMaster™ Control, Yes No No or Low-Ambient Pressure
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1 3 / ″ x / ″ (5.56 x 9.53) SLOT 4 8 4 REQ'D 1 / ″ (3.45) DIA HOLE 8 2 REQ'D H 3 / ″ 8 5 5 / ″ 16 (9.6) 1 / ″ (5.56) DIA HOLE 2 REQ'D 4 (151.5) J G 1 / ″ 2 (12.7) SUPPORT TYP MAT'L: 18 GA STEEL 7 / ″ 16 C (11.6) E A 1 / ″ 2 (12.7) 1 / ″ (3.45) DIA HOLE 8 1 REQ'D K 7 B / ″ 16 (11.6) J 1 / ″ (5.56) DIA HOLE 4 3 REQ'D 1 6″ / ″ 3 4 / ″ (9.6) 8 (6.3) (152.4) L D 1 / ″ x 2″ 4 BAFFLE (5.56 x 50.8) SLOT MAT'L: 20 GA STEEL SCREW 10 REQ'D F SUPPORT 4 REQ'D AA OUTDOOR UNIT BAFFLE 2 REQ'D BAFFL
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Calculate the linear length of vapor tube required, adding any All standard accessory-tubing kits are supplied with 3/8-in. insu- losses for the total number of elbows for application. (See Table lation on vapor line. 5.) Using this equivalent length, select desired vapor-line size from For minimal capacity loss in long-line application, 1/2-in. insula- Table 4. Subtract the nominal percentage loss from outdoor-unit tion should be specified. presale-literature Detailed Cooling Capacities data fo
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TABLE 3—WIND BAFFLE DIMENSIONS FOR CUBE UNITS (IN.) UNIT SIZE AA UNIT HEIGHT A B C D E F G H J 21-15/16 19-7/8 13-3/4 28-1/8 10-11/16 20-1/4 11-11/16 3-13/16 19-13/16 17-13/16 23-15/16 21-7/8 13-3/4 28-1/8 10-11/16 20-1/4 11-11/16 3-13/16 21-13/16 19-13/16 25-15/16 23-7/8 13-3/4 28-1/8 10-11/16 20-1/4 11-11/16 3-13/16 23-13/16 21-13/16 Small 18 27-15/16 25-7/8 13-3/4 28-1/8 10-11/16 20-1/4 11-11/16 3-13/16 25-13/16 23-13/16 29-15/16 27-7/8 13-3/4 28-1/8 10-11/16 20-1/4 11-11/16 3-13/16 27-13/16
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EXAMPLE: An 042 size heat pump is 75 ft above an 042 size fan coil. The 042 size heat-pump presale literature specifies a size 80 indoor piston and size 63 outdoor piston. To establish correct indoor piston size for a 75 ft vertical separation, refer to Table 6. For a 75 ft equivalent line A length, the piston change is -5. Therefore subtract 5 from the original indoor piston size of 80: 80 – 5=75 Table 8 provides common piston sizes. In this instance, 75 is not listed, therefore round DOWN to n
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TABLE 8—COMMON PISTON SIZES EXAMPLE: To calculate additional charge required for a 25–ft line set: CHECK-FLO- CHECK-FLO- CHATLEFF CHATLEFF RATER™ RATER™ 25 ft – 15 ft = 10 ft X 0.6 oz/ft=6ozof additional charge — 32 65 65 — 33 67 67 The rating-plate charge of a given outdoor unit is for a standard 35 35 — 68 application of 15 ft of interconnecting tubing. The rating-plate — 36 70 70 charge can be found on outdoor unit-rating plate or in outdoor unit-presale literature. Long-line applications do
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Positions 15 and 16—Product Variations 52—Last week of a year Example: Positions 3 and 4—Year of Manufacture AA—Standard unit Example: Other letters—For product variations from standard 94—1994 Position 5—Manufacturing Site II. SERIAL NUMBER IDENTIFICATION Example: The unit serial number has 10 positions containing groups of A–Indianapolis numbers and a letter that indicate specific information about the E–Collierville unit. Listed below is the breakdown of the 10 positions. Positions 6 through
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TRAP 50' MAX. HEAT PUMP ONLY GROUND LEVEL A90076 Fig. 6—Application with Air Conditioner or Heat Pump Installed with Indoor Unit Above Outdoor Unit CABINET III. INFORMATION PLATE—RELIANT PRODUCTS Certain maintenance routines and repairs require removal of The information plate is secured to the front of the control box and cabinet panels. There are 4 basic cabinet designs for air condition- provides a cover for it. (See Fig. 9.) This plate also provides a ers and heat pumps. (See Fig. 8.) The ho
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HEAT PUMP ONLY 150' MAX. A90077 Fig. 7—Application with Air Conditioner or Heat Pump Installed Above Indoor Unit 6. Lift top cover from unit. 7. Reverse sequence for reassembly. VI. REMOVE FAN-MOTOR ASSEMBLY—AFTER 1/1/92 NOTE: This section applies to all Reliant products made after January 1, 1992 1. Perform items 1, 3, 4, and 5 above. (Note item 2 is not required.) 2. Remove 4 screws holding wire basket to top cover. 3. Lift wire basket from unit. 4. Remove nuts holding fan motor to wire basket
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A94003 Fig. 8—Basic Cabinet Designs ELECTRICAL I. ALUMINUM WIRE WARNING: Exercise extreme caution when working on CAUTION: Aluminum wire may be used in the branch any electrical components. Shut off all power to system circuit (such as the circuit between the main and unit prior to troubleshooting. Some troubleshooting tech- disconnect), but only copper wire may be used between niques require power to remain on. In these instances, the unit disconnect and the unit on Bryant systems. exercise ext
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A91455 Fig. 12—Capacitors A88350 Use the following formula to calculate capacitance: Fig. 11—Contactor Capacitance (mfd) = (2650 X amps) divided by (volts) III. CAPACITORS 3. Remove any capacitor that shows signs of bulging, dents, or leaking. Do not apply power to a defective capacitor as it CAUTION: Capacitors can store electrical energy when may explode. power is off. Electrical shock can result if you touch the START CAPACITORS AND PTC DEVICES capacitor terminals and discharge the stored ene
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4. Remove PTC from unit. Wait at least 10 minutes for PTC to CAUTION: Do not check winding at compressor termi- cool to ambient temperature. nals with pressure in the system. Check resistance by 5. Measure resistance of PTC with ohmmeter as shown in removing wires attached at the compressor contactor and Fig.13. run capacitor. The cold resistance (RT) of any PTC device should be approxi- mately 100 – 180 percent of device ohm rating. 12.5–ohm PTC = 12.5–22.5 ohm resistance — beige color 3. Obtai
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T2 T1 T3 T1 T2 T3 HN67ZA002 A91438 HN67ZA008 A94005 T3 BLK T1 YEL T2 VIO T3 BLK T2 T1 T3 HN67PA025 HN67ZA003 A91439 A91440 Fig. 15—Cycle-Protector Device Cycle-protector device is simple to troubleshoot. Only a voltmeter no circuit through the crankcase heater because both leads are capable of reading 24v is needed. Device is in control circuit; connected to the same side of the line. This allows the heater to therefore, troubleshooting is safe with control power (24v) on and operate when the sy
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OPERATING 3 OPERATING 5 MIN 5 MIN TIME SEC TIME T1 T1 _ _ T2 T2 BLK DENOTES CLOSED CONTACTS BLK DENOTES CLOSED CONTACTS HN67ZA002 HN67PA025, HN67ZA003, HN67ZA008 A91436 A91437 Fig. 16—Cycle-Protector Sequence CUT YELLOW WIRE BETWEEN CONTACTOR AND LOW-PRESSURE SWITCH SAFETY Y YEL YEL YEL C BRN C CONTROL YEL TERMINAL TERMINAL VIO BOARD BOARD CONNECTION CONNECTION T1 LOGIC T3 BLK T2 A88415 Fig. 17—Cycle-Protector Wiring TDR is reset, and the fan relay remains energized. The TDR is a DSV 24v device
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2. Remove control-box cover for access to electrical compo- CAUTION: Wear safety glasses and gloves when work- nents and defrost-control board. ing with refrigerants. 3. Disconnect defrost-thermostat leads from control board and connect to ohmmeter. Thermostat leads are the black, insulated wires connected to DFT and R terminals on Apply heat with torch to solder joint and remove switch. Wear safety glasses when using torch. Have quenching cloth available. control board. Resistance reading may b
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OF2 OF1 OF2 G OF1 E W2 14 L G C W3 R R C O R T2 Y TI DFT C TEST 30 50 90 Y C R W1 O Y C C O O DFT R W2 Y 30 50 C W1 CES0110063, CES0130024 HK32FA003/HK32FA006 A91442 A88402 Fig. 19—Jumper DFT and R Terminals 2. Using thermocouple temperature-measuring device, route 4. Jumper between DFT and R terminals on control board as sensor or probe underneath coil (or other convenient loca- shown in Fig. 21. tion). Attach to liquid line near defrost thermostat. Insulate 5. Disconnect outdoor fan-motor lead
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OF1 OF2 OF2 G OF1 E W2 14 L G C W3 R R C Y R C O R T2 Y TI DFT C TEST 30 50 90 O Y C W1 C DFT O O R 50 90 W2 W1 Y C HK32FA003/HK32FA006 CES0110063, A88404 CES0130024 A91444 Fig. 20—Inserting Jumper Wire OF2 OF1 G OF2 OF1 E W2 14 L W3 G C R R C Y R C O Y C O R T2 Y TI DFT C TEST 30 50 90 C O DFT W1 30 50 W1 O R HK32FA003/HK32FA006 W2 A88403 Y C CES0110063, CES0130024 A91443 Fig. 21—Checking Between C and W2 13. Shut off unit power and reconnect fan lead. TABLE 10—DEFROST CONTROL SPEED-UP TIMING S
