PREVOST X3-45 Multiplex - Page 1145

Section 22: HEATING AND AIR CONDITIONING
PA1562
3
9.7.5 Installation .............................................................................................................................44
9.8 PREHEATING SYSTEM (OPTIONAL)...................................................................................................44
9.8.1 Operation...............................................................................................................................45
9.8.2 Preheating System Timer......................................................................................................45
9.8.3 Timer Operating Instructions (Webasto)...............................................................................46
9.8.4 Troubleshooting and Maintenance........................................................................................48
10. SPECIFICATIONS...........................................................................................................................49
ILLUSTRATIONS
FIGURE 1: DRIVER’S AIR CIRCULATION ................................................................................................................................4
FIGURE 2: PASSENGERS' AREA RECIRCULATION DAMPER .......................................................................................................4
FIGURE 3: CENTRAL HVAC SYSTEM AIR CIRCULATION.............................................................................................................5
FIGURE 4: PASSENGERS OVERHEAD COMPARTMENT VENTILATION SYSTEM ..............................................................................5
FIGURE 5: CENTRAL HVAC SYSTEM CONTROL UNIT ................................................................................................................6
FIGURE 6: THERMISTOR SENSOR........................................................................................................................................6
FIGURE 7: EVAPORATOR COMPARTMENT..............................................................................................................................7
FIGURE 8: CONDENSER COMPARTMENT ...............................................................................................................................7
FIGURE 9: EVAPORATOR MOTOR & COIL ACCESS PANEL ........................................................................................................7
FIGURE 10: EVAPORATOR COIL CLEANING............................................................................................................................7
FIGURE 11: CONDENSER COIL CLEANING .............................................................................................................................8
FIGURE 12: DRIVER'S SECTION ACCESS GRILL .....................................................................................................................8
FIGURE 13: DRIVER'S SECTION AIR FILTERS..........................................................................................................................8
FIGURE 14: PASSENGERS' SECTION AIR FILTER.....................................................................................................................9
FIGURE 15: OVERHEAD COMPARTMENT FAN AIR FILTER .........................................................................................................9
FIGURE 16: REFRIGERANT CIRCUIT (CENTRAL AND AUXILIARY SYSTEMS) ...............................................................................14
FIGURE 17: DOUBLE SWEEP EVACUATION SET-UP...............................................................................................................17
FIGURE 18: AIR PRESSURE REGULATOR.............................................................................................................................20
FIGURE 19: BELTS ARRANGEMENT (DDC S60 ENGINE).........................................................................................................20
FIGURE 20: BELTS ARRANGEMENT (VOLVO D13 ENGINE) .....................................................................................................20
FIGURE 21: IDLER PULLEY INSTALLATION ON VOLVO D13 ENGINE..........................................................................................20
FIGURE 22: BELT PLAY.....................................................................................................................................................20
FIGURE 23: COMPRESSOR ALIGNMENT..............................................................................................................................21
FIGURE 24: COMPRESSOR ALIGNMENT..............................................................................................................................21
FIGURE 25: EVAPORATOR COMPARTMENT..........................................................................................................................22
FIGURE 26: EVAPORATOR MOTOR ASSY FIXING BOLTS.........................................................................................................23
FIGURE 27: EVAPORATOR MOTOR ASSEMBLY ....................................................................................................................23
FIGURE 28: CONDENSER FAN MOTOR ................................................................................................................................24
FIGURE 29: A/C CONDENSER COMPARTMENT.....................................................................................................................24
FIGURE 30: DRIVER'S EVAPORATOR LIQUID SOLENOID VALVE ...............................................................................................25
FIGURE 31: REFRIGERANT SOLENOID VALVE.......................................................................................................................26
FIGURE 32: EXPANSION VALVE .........................................................................................................................................27
FIGURE 33: SUPERHEAT ADJUSTMENT INSTALLATION ..........................................................................................................28
FIGURE 34: HIGH & LOW SWING TEMPERATURE AT REMOTE BULB .........................................................................................28
FIGURE 35: COMPRESSOR REMOVAL OR INSTALLATION .......................................................................................................35
FIGURE 36: CENTRAL HEATING SYSTEM COMPONENTS ........................................................................................................36
FIGURE 37: CEILING OF THE SPARE WHEEL COMPARTMENT .................................................................................................37
FIGURE 38: DRIVER’S HVAC UNIT......................................................................................................................................37
FIGURE 39: HEATER LINE SHUT-OFF VALVES ......................................................................................................................38
FIGURE 40: EVAPORATOR COMPARTMENT..........................................................................................................................38
FIGURE 41: DRIVER'S HOT WATER PNEUMATIC VALVE ASSEMBLY ..........................................................................................39
FIGURE 42: PNEUMATIC WATER VALVE ..............................................................................................................................39
FIGURE 43: CENTRAL HOT WATER PNEUMATIC VALVE ASSEMBLY ..........................................................................................40
FIGURE 44: PNEUMATIC WATER VALVE ..............................................................................................................................41
FIGURE 45: PUMP LOCATION (CENTRAL A/C).......................................................................................................................42
FIGURE 46: WATER RECIRCULATING PUMP (CENTRAL A/C) ...................................................................................................43
FIGURE 47: LOCATION OF PREHEATER...............................................................................................................................44
FIGURE 48: WEBASTO PREHEATER (104,000 BTU) .............................................................................................................45
FIGURE 49: WEBASTO .....................................................................................................................................................46