Bryant 577D----A - Manuals

10 2. Avoid abrupt duct size increases and reductions. Abrupt change in duct size adversely affects air performance. IMPORTANT : Use flexible connectors between ductwork and unit to prevent transmission of vibration. Use suitable gaskets toensure weather tight and airtight seal. When electric heat i...

11 the outlet of the trap is at least 1 in. (25 mm) lower than thedrain--pan condensate connection to prevent the pan from overflowing. Prime the trap with water. When using a gravel apron,make sure it slopes away from the unit.If the installation requires draining the condensate water away from the...

12 OUT TEE NIPPLE CAP IN C99020 Fig. 10 -- Sediment Trap FIRE OR EXPLOSION HAZARD Failure to follow this warning could result in fire, explosion, personal injury, death and/or property damage. S Connect gas pipe to unit using a backup wrench to avoiddamaging gas controls. S Never purge a gas line in...

13 Table 2 – Maximum Gas Flow Capacity* NOMINAL IRON PIPE SIZE (IN.) INTERNAL DIAMETER (IN.) LENGTH OF PIPE ft (m)† 10 (3.0) 20 (6.1) 30 (9.1) 40 (12.1) 50 (15.2) 60 (18.3) 70 (21.3) 80 (24.4) 90 (27.4) 100 (30.5) 125 (38.1) 150 (45.7) 175 (53.3) 200 (61.0) 1/2 .622 175 120 97 82 73 66 61 57 53 50 4...

15 FURNACE BOARD HP/ACBOARD A09108 Fig. 13 -- Control Plate A06357 Fig. 14 -- Control Voltage Wiring Connections 577D -- -- A

23 open or shorted at any time after initial validation, Status Code 53will be displayed at amber STATUS LED.Check for faults in wiring connecting sensor to OAT terminals.Using an Ohm meter, check resistance of thermistor for a short or open condition.If thermistor is shorted or open, replace it to ...

26 CARBON MONOXIDE POISONING HAZARD Failure to follow this warning could result in personal injury and/or death.If the manifold pressure and/or gas rate is not properly adjusted on HI and LO stages, excess carbon monoxide can be produced. ! WARNING FIRE AND UNIT DAMAGE HAZARD Failure to follow this ...

28 MANIFOLD BURNER BURNER FLAME C99021 Fig. 21 -- Monoport Burner LIMIT SWITCHESNormally closed limit switch (LS) completes the control circuit. Should the leaving--air temperature rise above the maximumallowable temperature, the limit switch opens and the control circuit “breaks.” Any interruption ...

29 Table 6 – Heating Input s HEATING INPUT (BTU/HR)* NUMBER OF GAS SUPPLY PRESSURE (IN. W.C.) MANIFOLD PRESSURE (IN. W.C.) NUMBER OF ORIFICES Natural Natural High Stage Low Stage ORIFICES Min Max High Stage Low Stage 40,000 26,000 2 4.0 13.0 3.2 ∼ 3.8 1.4 ∼ 2.0 60,000 39,000 3 4.0 13.0 3.2 ∼ 3.8 1.4...

31 MAINTENANCE To ensure continuing high performance, and to minimize thepossibility of premature equipment failure, periodic maintenance must be performed on this equipment. This packaged unit shouldbe inspected at least once each year by a qualified service person. To troubleshoot unit, refer to T...

32 8. Partially slide the burner rack out of the unit (see Fig. 25 and 26). Remove ignitor and sensor wires at the burner as- sembly. Remove wires to rollout switch. 9. Slide the burner rack out of the unit (See Fig. 25 and 26). 10. To reinstall, reverse the procedure outlined above. CompressorAcces...

33 After inspecting the electrical controls and wiring, replace all thepanels. Start the unit, and observe at least one complete cooling cycle to ensure proper operation. If discrepancies are observed inoperating cycle, or if a suspected malfunction has occurred, check each electrical component with...

34 Exposure, even if immediately cleaned up, may causeembrittlement (leading to cracking) to occur in one year or more. When performing any service that may risk exposure ofcompressor oil to the roof, take appropriate precautions to protect roofing. Procedures which risk oil leakage include, but are...

35 exists, the thermal protector is open. The control de--energizes thecompressor contactor for 15 minutes, but continues to operate the outdoor fan. The control Status LED will flash the appropriatecode shown in Table 4. After 15 minutes, with a call for low or high stage cooling, the compressor co...

36 CARE AND MAINTENANCE For continuing high performance and to minimize possibleequipment failure, periodic maintenance must be performed on this equipment.Frequency of maintenance may vary depending upon geographic areas, such as coastal applications. See Users Manual for information. 577D -- -- A

37 AIR CONDITIONER WITH PURON REFRIGERATION SECTION QUICK--REFERENCE GUIDE Puron refrigerant operates at 50--70 percent higher pressures than R--22. Be sure that servicing equipment and replacement components are designed to operate with Puron. Puron refrigerant cylinders are rose colored. S Puron r...

38 Table 9 – Troubleshooting Chart -- Cooling SYMPTOM CAUSE REMEDY Compressor and outdoor fan will not start Power failure Call power company Fuse blown or circuit breaker tripped Replace fuse or reset circuit breaker Defective contactor, transformer, control relay, or high-- pressure, loss--of--cha...

39 Table 10 – Troubleshooting Chart -- Gas Furnace Operation SYMPTOM CAUSE REMEDY Burners will not ignite Water in gas line Drain. Install drip leg. No power to unit Check power supply fuses, wiring or circuit breaker. No 24--v power supply to control circuit Check transformer. NOTE: Some transforme...