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If the outdoor coil’s Defrost Thermostat switch (DFT) is

closed (shorting DFB terminals DFT1 and DFT1), the

Defrost cycle will start. Output at OF is removed; outdoor

fans stop during the Defrost cycle. Output P3–7 (RVS1) is

energized; reversing valve solenoid RVS is energized and

reversing valve changes position, placing the circuit in a

Cooling mode flow, directing hot gas into the outdoor coil

where its heat melts the frost and loosens the ice on the

coil face.

During the Defrost cycle, output EHEAT is also energized (if

not already energized by a thermostat W2 demand);

supplemental heater will be energized. During the Defrost

Cycle, LED1 on the DFB will be illuminated. The Defrost

cycle ends when DFT opens (as liquid temperature exiting

the coil rises above DFT setpoint) or the defrost cycle runs

for 10 minutes. Output at EHEAT is removed; supplemental

heater will be de-energized (unless thermostat has a W2

demand). Output at OF is restored; outdoor fans start again.

Output P3–7 (RVS1) is removed; reversing valve returns to

Heating position.

Defrost cycle is fixed at a maximum 10 minute duration

limit. The period to test and initiate a Defrost cycle can be

configured for 30, 60, 90 or 120 minutes.

Supplemental Heat/Emergency Heat —

Supplemental heat type is determined by 524J indoor unit

options and accessories. This heat is initiated when the

indoor unit W2 terminal is energized by the thermostat. (Or

as detailed in “Defrost Cycle” above.) The thermostat may

energize W2 as supplemental (2nd stage) heat at higher

space heating demand, or when selected as emergency heat

mode. When the space heating demand decreases below the

2nd stage limit, or emergency heat is turned off, W2 is

de-energized, and supplemental heat is turned off.

Cooling and Heating Shutdown —

Partial or complete cooling or heating functions may

shutdown caused by loss of main power, open pressure

switches, diagnostic alarms, or open internal compressor

protections. See Service section for further details.

ROUTINE SYSTEM MAINTENANCE

These items should be part of a routine maintenance

program, to be checked every month or two, until a specific

schedule for each can be identified for this installation:

Quarterly Inspection

(and 30 days after initial start) —

Indoor section

Coil cleanliness checked.

Return air filter replacement

Belt tension checked

Belt condition checked

Pulley alignment checked

Fan shaft bearing locking collar tightness checked

Condensate drain checked

Blower motor amperage

Outdoor Section

Fan motor mounting bolts tightness

Compressor mounting bolts

Fan blade positioning

Control box cleanliness and wiring condition

Wire terminal tightness

Refrigerant charge level

Economizer or Outside Air Damper

Inlet filters condition

Check damper travel (economizer)

Check gear and dampers for debris and dirt

575J

*08G/

Содержание 575Jx08G/H Series

Страница 1: ...Fan 19 Cooling Unit Without Economizer 19 Cooling Unit With Economizer 19 Heating 19 Defrost Cycle 19 Supplemental Heating Emergency Heating 20 Cooling and Heating Shutdown 20 ROUTINE SYSTEM MAINTENA...

Страница 2: ...onal injury or death CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in en...

Страница 3: ...Stage w Low Ambient Controller Electrical Options A None C Non Fused Disconnect Service Options 0 None 1 Unpowered Convenience Outlet 2 Powered Convenience Outlet Base Unit Controls 0 Electro Mechanic...

Страница 4: ...Corner B Corner C Corner D Center of Gravity lbs kg lbs kg lbs kg lbs kg lbs kg X Y Z H Unit Height 575J 08G H 470 213 156 71 106 48 86 39 120 54 21 533 24 610 23 584 50 3 8 1280 C14310 Fig 2 575J 08...

Страница 5: ...86 21 Cut in 303 35 PIPING CONNECTIONS in ODS Qty Suction 1 1 1 8 Qty Liquid 1 1 2 LEGEND RTPF Round Tube Plate Fin NEMA National Electrical Manufacturers Association ODS Outside Diameter Sweat socket...

Страница 6: ...mum of 6 in 150 mm beyond unit cabinet Install a gravel apron in front of condenser coil air inlet to prevent grass and foliage from obstructing airflow Step 4 Rig and Mount the Unit Rigging These uni...

Страница 7: ...mits for liquid line according to unit mode equivalent line length and pipe size Vapor Line Riser Refer to Table 4 for maximum pipe size in single pipe vapor risers All pipe size recommendations in Pi...

Страница 8: ...s been completed The stub tube connections include 1 4 in SAE service fittings with Schrader valve cores see Fig 5 Before making any brazed connections to the unit service valves remove both Schrader...

Страница 9: ...n electrical ground Unit cabinet must have an uninterrupted unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur This ground may consist of ele...

Страница 10: ...ctors to LINE side terminals when the switch enclosure cover is removed to attach the handle C12284 Fig 8 Location of Non Fused Disconnect Enclosure To field install the NFD shaft and handle 1 Remove...

Страница 11: ...peration on improper line voltage or excessive phase imbalance constitutes abuse and may cause damage to electrical components Such operation would invalidate any applicable Bryant warranty Convenienc...

Страница 12: ...onvenience outlet is covered with a blank cover plate The weatherproof cover kit is shipped in the unit s control box The kit includes the hinged cover a backing plate and gasket DISCONNECT ALL POWER...

Страница 13: ...insulated wire 35 C minimum For 50 to 75 ft 15 to 23 m use no 16 AWG insulated wire 35 C minimum For over 75 ft 23 m use no 14 AWG insulated wire 35 C minimum All wire sizes larger than no 18 AWG can...

Страница 14: ...CA values are calculated in accordance with The NEC Article 440 3 Motor RLA and LRA values are established in accordance with Underwriters Laboratories UL Standard 1995 4 Unbalanced 3 Phase Supply Vol...

Страница 15: ...g compressor If pressures do not equalize readily charge vapor on low side of system to assure charge in the evaporator Refer to GTAC II Module 5 Charging Recover Recycling and Reclamation for liquid...

Страница 16: ...Advanced Scroll Temperature Protection will reset automatically before the motor protector resets which may take up to 2 hours Start Unit Disconnect the field low voltage lead at the 575J unit s R ter...

Страница 17: ...CHARGING CHART PURON COMPRESSOR FULL LOAD ALL CONDENSER FANS OPERATING DIAGRAMME DE REMPLISSAGE DE PURON POUR 7 5 TONNES 2 STAGE COMPRESSEUR PLEINE CAPACIT TOUS LES VENTILATEURS DU CONDENSEUR EN OP RA...

Страница 18: ...18 C14303 Fig 17 Typical 575J 08G H Wiring Diagram 208 230V 3PH 60Hz Unit Shown 575J 08G H...

Страница 19: ...of compressor operation until CADM is manually reset Reset CADM by cycling unit main power Reversing valve solenoid RVS is energized in Cooling modes This solenoid will remain energized until the nex...

Страница 20: ...s heat is initiated when the indoor unit W2 terminal is energized by the thermostat Or as detailed in Defrost Cycle above The thermostat may energize W2 as supplemental 2nd stage heat at higher space...

Страница 21: ...to be serviced and prevent lubric ant run offs through the louvered openings in the base pan 4 Perform required service 5 Remove and dispose of any oil contaminated material per local codes Liquid Li...

Страница 22: ...not operating The heater is wired to cycle with the compressor the heater is off when compressor is running and on when compressor is off The crankcase heater will operate as long as the power circui...

Страница 23: ...Test defrost runs for 12 seconds or less Jumper for 5 20 secs Forced Defrost defrost runs for 30 secs if DFT1 is open DFB Power 24 V at Pin P3 1 COM at P3 3 required in all modes MODE COOL OFF After...

Страница 24: ...rt and termination of the defrost cycle If DFT1 is still open the defrost test run window is closed and the control repeats the continuous run period If DFT1 is closed the defrost cycle is initiated T...

Страница 25: ...r of 0 1 sec minute For example the 90 min run period is reduced to 9 secs The DFB will step the unit through a Heating cycle and a Defrost cycle using these reduced time periods This mode ends after...

Страница 26: ...26 Fans Service Valves C14305 Fig 23 575J 08G H Exterior 575J 08G H...

Страница 27: ...27 LOC HPS High Flow Access Ports Outdoor Coil Defrost Thermostat DFT C14306 Fig 24 575J 08G H Interior 575J 08G H...

Страница 28: ...ns The ALERT LED indicates an abnormal condition exists in the system through a flash code The ALERT LED will blink a number of times consecutively pause and the repeat the process The number of blink...

Страница 29: ...llow ALERT Flash Code 3 Short Cycling Compressor is running only briefly LOCKOUT 1 If low pressure switch is open a Low refrigerant charge b Evaporator blower is not running c Evaporator coil is froze...

Страница 30: ...f Outdoor Fans Each fan is supported by a formed wire mount bolted to the fan deck and covered with a wire guard Fan motors have permanently lubricated bearings 1 Shut off unit power supply Install lo...

Страница 31: ...lean outdoor or indoor coils of any kind These cleaners can be very difficult to rinse out of the coil and can accelerate corrosion at the fin tube interface where dissimilar materials are in contact...

Страница 32: ...able from the Replacement Components Division s Electronic Parts Information Catalog EPIC EPIC is available at Totaline stores distributor and service office parts departments and on line at HVACPartn...

Страница 33: ...g motor or capacitor Replace Restriction in refrigerant system Locate restriction and remove Compressor Operates Continuously Dirty air filter Replace filter Unit undersized for load Decrease load or...

Страница 34: ...filter driers and service valves with wet cloth when brazing S A factory approved liquid line filter drier is required on every unit S Do not use an R 22 TXV S If indoor unit is equipped with a TXV it...

Страница 35: ...ck OFR Cooling Slow fan speed at start or during low outdoor ambient Normal operation Cooling Slow fan speed above 85_F outdoor ambient should be full speed Check sensor location Check sensor resistan...

Страница 36: ...36 D K J H G F E C B A C10800 Fig 29 Wind Baffles 575J 08G H...

Страница 37: ...37 575J 08G H...

Страница 38: ...Systems D 7310 W Morris St D Indianapolis IN 46231 Edition Date 11 14 Manufacturer reserves the right to change at any time specifications and designs without notice and without obligations Catalog No...

Страница 39: ...TERMINALS including main power supply TIGHT Y N HAS CRANKCASE HEATER BEEN ENERGIZED FOR 24 HOURS Y N INDOOR UNIT HAS WATER BEEN PLACED IN DRAIN PAN TO CONFIRM PROPER DRAINAGE Y N ARE PROPER AIR FILTE...

Страница 40: ...ASUREMENTS COOLING HEATING VAPOR PRESSURE SUCTION LINE TEMP AT COMPRESSOR LIQUID PRESSURE LIQUID LINE TEMP ENTERING OUTDOOR UNIT AIR TEMP LEAVING OUTDOOR UNIT AIR TEMP INDOOR UNIT ENTERING AIR DB dry...

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