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Содержание N4H4

Страница 1: ...word WARNING is used throughout this manual in the following manner The signal word CAUTION is used throughout this manual in the following manner Signal Words on Product Labeling Signal words are us...

Страница 2: ...the unit and provisions are made for water drainage and noise vibration dampening NOTE Roof mounted units exposed to wind may require wind baffles Consult the manufacturer for additional information...

Страница 3: ...des require the unit be attached in place remove the knockouts in the base pan and install tie down bolts through the holes refer to Figure 1 Contact local distributor for hurricane hold down details...

Страница 4: ...se copper water pipe Do not remove rubber plugs or caps from copper tubing until connections are ready to be made Be extra careful when bending refrigeration tubing Tubing can kink easily and if this...

Страница 5: ...door units are shipped with an appropriate filter drier for installation in the liquid line Leave the plugs in the tube ends until the filter drier is installed The optimal location for the filter dri...

Страница 6: ...wrap a wet cloth around rear of fitting to prevent damage to TXV H EVACUATING LINE SET AND INDOOR COIL The unit is shipped with a factory refrigerant charge The liquid line and suction line service va...

Страница 7: ...Suction service valve cap and insert a hex wrench into the valve stem Hold the valve body steady with an end wrench and back out the stem by turning the hex wrench counterclockwise Turn the stem unti...

Страница 8: ...trical Supply Line Voltage Figure 9 Connections DISCONNECT PER NEC AND OR LOCAL CODES L1 FIELD POWER WIRING L2 FIELD GROUND WIRING I CONTACTOR 11 o 23 or 13 GROUND LUG Figure 10 Typical Thermostat Con...

Страница 9: ...e a volt meter to confirm there is no voltage across the DFT leads 24 volts across the SFT terminals indicates an OPEN defrost thermostat Zero volts across the DFT terminals indicates a CLOSED defrost...

Страница 10: ..._ Defrost Control Board _O O JF H9C_ 9 01 _ 1 Kt c_ C19 OF2 C9 DFT T1CC 0 12Z o_ R W2 y _ C 1 J O0 l O0 i n R20 D P3 1 W1 30 60 90 J1 SPEEDUP 10 specifications subject to change without notice 428 01...

Страница 11: ...ong Line Guideline for special charging requirements A UNITS WITH COOLING MODE TXV Units installed with cooling mode TXV require charging by the subcooling method 1 Operate unit a minimum of 15 minute...

Страница 12: ...Y energizes contactor starting outdoor fan motor and compressor Circuit R G energizes indoor unit blower relay starting indoor blower motor When thermostat is satisfied its contacts open de energizin...

Страница 13: ...must be weighed in Note Superheat F is at low side service port Allow a tolerance of 3 F 1 7 C Note Indoor dry bulb between 70 F and 80 F 21 C and 27 C Figure 14 SUCTION PRESSURE AT SERVICE PORT PSIG...

Страница 14: ...00 98 395 110 108 106 104 102 100 406 112 110 108 106 104 102 416 114 112 110 108 106 104 427 116 114 112 110 108 106 439 118 116 114 112 110 108 450 120 118 116 ii_ _4_ i_i_i_iiiiii iiiiiiiiiii_i_iii...

Страница 15: ...21 A EN 4X36 EH D4X36A FEM4P36 A TXV FSA4X36 A FEA4X36 A F E X M4X36 A FS M U 4P36 A TXV ED 4X42 EA 4X42 21 24 A EN 4X42 21 END4X42 17 EH D4X42A FEM4 P X 42 A TXV FXM4X42 A FS M U 4P42 A TXV ED 4X48F...

Страница 16: ...ws constant 24 VAC power at the R and C terminals Figure 17 Comfort Alert TM Diagnostics some models Compressor Wires __7 _ Pass Through Holes 3 R _ _ 9I _ Power LED _ C y _ Thermostat Demand C_ Trip...

Страница 17: ...r fan is not running 4 Return air duct has substantial leakage 5 If low pressure switch present in system check Flash Code 1 information 1 Thermostat demand signal is intermittent 2 Time delay relay o...

Страница 18: ...ure from oil Do not use liquid line filter driers with rated working pressures less than 600 psig Do not install a suction line filter drier in liquid line POE oils absorb moisture rapidly Do not expo...

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