Инструкции на Тепловые насосы Lennox серии HP...

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1. Стр. 1 HP29

   Corp. 0101−L1 Revised 06−2003 Service Literature Heat Pumps−7.5 &10 Ton (26.4 & 35.2 kw) Litho U.S.A. HP29 HEAT PUMP SERIES The HP29 7.5 and 10 (26.4 and 35.2 kW) ton heat pump units are designated for light commercial applications, with a remotely located blower−coil unit or a furnace with an…

2. Стр. 2 SPECIFICATIONS

   Model No. HP29−090−2 HP29−120−2 7.5 (26.4) 10 (35.2) Nominal Size − Tons (kW) Liquid line (o.d.) in. (mm) connection (sweat) 5/8 (15.9) Vapor line (o.d.) in. (mm) connection (sweat) Outdoor Coil Net face area sq. ft. (m2) 1−3/8 (34.9) Outer coil 21.80 (2.03) Inner coil 20.94 (1.95) Tube diameter in.…

3. Стр. 3 ELECTRICAL DATA

   Model No. HP29−090−2 Line voltage data 60 hz − 3 phase HP29−120−2 208/230v 460v 575v 208/230v 460v 575v Rec. max. fuse or circuit breaker size (amps) {Minimum circuit ampacity Rated load amps 28.8 14.7 10.8 37.8 17.2 12.4 Locked rotor amps Full load amps (total) 3 1.5 1.2 2.4 (4.8) 1.3 (2.6) 1 (2)…

4. Стр. 4 HP29−090−3 MODEL PARTS ARRANGEMENT

   fan guard control box outdoor fan (B4) vapor line service valve reversing valve defrost thermostat (S6) discharge line thermostat (S5) high pressure switch (S4) compressor (B1) defrost pressure switch (S46) loss of charge switch (S24) liquid line service valve low ambient switch (S11) FIGURE 1…

5. Стр. 5 HP29−090−3 CONTROL BOX

   transfer relay K8 low ambient kit relay K58 outdoor fan relay K10 defrost relay K4 CMCI defrost/timer R latch relay K6 G G1 ground lug capacitor C1 terminal strip TB 14 compressor contactor K1 W1 W2 Y1 C FIGURE 3 HP29−120−3 CONTROL BOX relay switch K6 terminal strip TB 14 cmc1 defrost / timer…

6. Стр. 6 I−UNIT COMPONENTS

   A latch relay (figure 5 ) has two coils: a SET" coil and a The HP29−090 and HP29−120 components are shown in figures 1 and 2. RESET" coil. When 24VAC is applied to the SET" coil, the A−CONTROL BOX COMPONENTS The HP29−090 control box components are shown in fig ure 3. The HP29−120P control box…

7. Стр. 7 6 − Transfer Relay K8 (all units)

   B−COOLING COMPONENTS Transfer relay K8 ensures that the indoor blower will oper ate during all modes of operation. K8 also completes the circuit to Y1 on the defrost control board CMC1. The com bined operation of latch relay K6 and transfer relay K8 al lows the HP29 unit to use a conventional…

8. Стр. 8 SUCTION

   SUCTION INTERMEDIATE PRESSURE GAS 2 1 CRECENT SHAPED ORBITING SCROLL GAS POCKET STATIONARY SCROLL SUCTION FLANKS SEALED POCKET BY CENTRIFIGUAL FORCE SUCTION SUCTION MOVEMENT OF ORBIT 3 4 HIGH PRESURE GAS DISCHARGE POCKET FIGURE 8 The counterclockwise orbiting scroll draws gas into the 2 − Crankcase…

9. Стр. 9 5 − Discharge Line Thermostat S5

   C−Defrost System S5 is an automatic reset SPST N.C. switch which opens on a temperature rise. The switch is located on the discharge line and wired in series with the CMCI board and S4 pres sure switch. When discharge line temperature rises to 275° + 5°F the switch opens and the compressor is de−en…

10. Стр. 10 Defrost Control CMC1

    The defrost control board combines functions of a time / temperature initiated and time / pressure terminated defrost control, defrost relay, time delay, diagnostic LEDs and field connection terminal strip. See figure 10. The control provides automatic switching from normal heating operation to…

11. Стр. 11 DEFROST CONTROL BOARD HP29−2 UNITS

    COMPRESSOR CONNECTIONS DIAGNOSTIC LEDs LED 2 DEFROST INTERVAL TIMING PINS PRESSURE SWITCH SAFETY CIRCUIT CONNECTIONS AMBIENT THERMISTOR CONNECTION 24V TERMINAL STRIP CONNECTIONS SERVICE LIGHT CONNECTION DEFROST SWITCH CONNECTIONS REVERSING VALVE NOTE− There is an internal jumper between inside PS1…

12. Стр. 12 COOLING MODE

    REVERSING VALVE LOW PRESSURE HIGH PRESSURE COMPRESSOR ACCUMULATOR EXPANSION VALVE BI−FLOW DRIER CHECK VALVE INDOOR COIL TO REFRIGERANT DRUM OUTDOOR COIL NOTE − ARROWS INDICATE DIRECTION OF REFRIGERANT FLOW VAPOR LINE SERVICE LIQUID LINE VALVE SERVICE VALVE EXPANSION VALVE OUTDOOR UNIT INDOOR UNIT…

13. Стр. 13 LIQUID LINE SERVICE VALVE (VALVE OPEN)

    II− REFRIGERANT SYSTEM A−Plumbing INSERT HEX WRENCH HERE Field refrigerant piping consists of liquid and vapor lines from the outdoor unit (sweat connections) to the indoor evaporator coil (sweat connections). Refer to table 2 for field−fabricated refrigerant line sizes. Refer to Lennox Re frigerant…

14. Стр. 14 DANGER

    Do not attempt to backseat this valve past the retaining ring. Attempts to backseat this valve past the retaining ring will cause snap ring to explode from valve body under pressure of refrigerant. Personal injury and unit damage will result. VAPOR LINE SERVICE VALVE USE ADJUSTABLE WRENCH ROTATE…

15. Стр. 15 Three−Phase Compressor Rotation

    Threephase scroll compressors must be phased se quentially to ensure that the compressor rotates and operates correctly. When the compressor starts, a rise in discharge and drop in suction pressures indicate proper compressor phasing and operation. If dis charge and suction pressures do not perform…

16. Стр. 16 TABLE 3

    UNIT MODEL NUMBER MATCHED INDOOR UNIT HCFC22 FOR 25 FEET (7.6 m) OF LINE HP29 090 2 HP29−090−2 HP29−090−3 CB17/CBH17 95 CB17/CBH17−95 23 lbs. (10.4 kg) 21.5 lbs. (9.8 kg) HP29 120 2 HP29−120−2 HP29−120−3 CB17/CBH17 135 CB17/CBH17−135 31 lbs. (14.1 kg) 30 lbs. (13.6 kg) LIQUID LINE DIAMETER…

17. Стр. 17 C−Charging

    If the system is completely void of refrigerant, the recom mended and most accurate method of charging is to weigh the refrigerant into the unit according to table 3. If weighing facilities are not available or if unit is just low on charge, the following procedure applies. The following procedures…

18. Стр. 18 TABLE 5

19. Стр. 19 V−MAINTENANCE

    At the beginning of each cooling season, the system should be checked as follows: WARNING Electric shock hazard. Can cause inju ry or death. Before attempting to per form any service or maintenance, turn the electrical power to unit OFF at dis connect switch(es). Unit may have multiple power…

20. Стр. 20 VI−Wiring Diagram and Sequence of Operation

21. Стр. 22

    After each thermostat demand, time delay locks out the circuit to compressor contactor coil and defrost control for 5 + 2 minutes. At the end of the time period, the time delay allows the compressor contactor and defrost control to be energized upon demand. COOLING 1 − Cooling demand energizes…

22. Стр. 25

    After each thermostat demand, time delay locks out the circuit to compressor contactor coil and defrost control for 5 + 2 minutes. At the end of the time period, the time delay allows the compressor contactor and defrost control to be energized upon demand. COOLING 1 − Cooling demand energizes…

23. Стр. 26 E− THERMOSTAT CONNECTIONS

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24. Стр. 27 SERVICE NOTES

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