Bryant 588A, 589A IX. Ð Install Duct Connections, Conguring Units for Down¯ow Vertical Discharge

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CAUTION: Unstable operation may occur when the gas valve and manifold assembly are forced out of po- sition while connecting improperly-routed rigid gas pip- ing to the gas valve. Use a backup wrench when mak- ing connection to avoid strain on, or distortion of, the gas control piping.

CAUTION: If a ¯exible conductor is required or al- lowed by the authority having jurisdiction, black iron pipe shall be installed at the gas valve and shall ex- tend a minimum of 2 in. outside the unit casing.

WARNING: Never use a match or other open ¯ame when checking for gas leaks. Never purge gas line into combustion chamber. Failure to follow this warning could result in an explosion causing personal injury or death.

8.Check for gas leaks at the ®eld-installed and factory- installed gas lines after all piping connections have been completed. Use soap-and-water solution (or method speci- ®ed by local codes and/or regulations).

Fig. 15 Ð Sediment Trap

IX. STEP 9 Ð INSTALL DUCT CONNECTIONS

The unit has duct ¯anges on the supply- and return-air open- ings on the side and bottom of the unit. See Fig. 2-9 for con- nection sizes and locations.

A. Con®guring Units for Down¯ow (Vertical) Discharge

WARNING: Before performing service or mainte- nance operations on the system, turn off main power to unit or electrical shock could result.

1.Open all electrical disconnects before starting any serv- ice work.

2.Remove return duct cover located on duct panel. Figure 16 shows duct cover removed. Save duct cover and screws.

3.Locate lances in basepan insulation that are placed over the perimeter of the vertical duct opening cover (Fig. 17).

4.Using a straight edge and sharp knife, cut and remove the insulation around the perimeter of the cover. Re- move and save 5 screws securing the cover to the base- pan and slide out the cover. Discard the cover (Fig. 18).

5.Remove supply duct cover located on duct panel. Figure 16 shows duct cover removed. Save duct cover and screws.

6.Remove and discard 2 screws which secure vertical dis- charge opening cover to basepan (Fig. 19). Slide cover forward to disengage, then tilt and remove cover through vertical discharge opening in bottom of unit. Discard duct cover (Fig. 20).

CAUTION: Collect ALL screws that were removed. Do not leave screws on rooftop as permanent damage to the roof may occur.

7.If unit ductwork is to be attached to vertical opening ¯anges on the unit basepan (jackstand applications only), do so at this time.

8.It is recommended that the basepan insulation around the perimeter of the vertical return-air opening be se- cured to the basepan with aluminum tape. Applicable local codes may require aluminum tape to prevent ex- posed ®berglass.

9.Cover both horizontal duct openings with the duct cov- ers from Steps 2 and 5. Make sure opening is air- and watertight.

10.After completing unit conversion, perform all safety checks and power up unit.

NOTE: The design and installation of the duct system must be in accordance with the standards of the NFPA for instal- lation of nonresidence-type air conditioning and ventilating systems, NFPA 90A or residence-type, NFPA 90B; and/or lo- cal codes and residence-type, NFPA 90B; and/or local codes and ordinances.

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Contents Safety Considerations ContentsGeneral 588A018-042 Without Base Rail, Unit Dimensions Ð2Ð588A018-042 With Optional Base Rail, Unit Dimensions Ð3Ð588A048,060 Without Base Rail, Unit Dimensions Ð4Ð588A048,060 With Optional Base Rail, Unit Dimensions Ð5Ð589A024-036 Without Base Rail, Unit Dimensions Ð6Ð589A024-036 With Optional Base Rail, Unit Dimensions Ð7Ð589A042-060 Without Base Rail, Unit Dimensions Ð8Ð589A042-060 With Optional Base Rail, Unit Dimensions Ð9ÐReceiving and Installation Check Equipment II. Ð Provide Unit SupportIII. Ð Field Fabricate Ductwork IV. Ð Provide ClearancesPart Number Ð11ÐCurb Unit MAX WeightUnit VII. Ð Install Flue Hood VIII. Ð Install GAS PipingUnits With Optional Base Rail VI. Ð Connect Condensate DrainPhysical Data Ð Unit 588A Ð14ÐPhysical Data Ð Unit 589A Ð15ÐIX. Ð Install Duct Connections Conguring Units for Down¯ow Vertical DischargeÐ17Ð Maximum Gas Flow CapacityInternal Length of PIPE, FT² Iron Pipe Diameter Size Install Electrical Connections High-Voltage ConnectionsÐ Electrical Data Ð Unit 588A Ð19ÐÐ20Ð Ð Electrical Data Ð Unit 589ARLA LRA FLA Special Procedures for 208-V Operation High- and Control-Voltage ConnectionsTransformer Protection PRE-START-UPII. Start UP Heating Section and Make Adjustments Adjust Gas InputSTART-UP Check for Refrigerant Leaks Check Heating ControlRated Gas Inputs at Indicated Manifold Pressures GAS Supply Pressure Manifold Natural GAS Propane NumberPressure OrificesCheck Burner Flame Heating Temperature Rise F InputÐ25Ð III. Start UP Cooling Section and Make Adjustments 208/230-1-60 Wiring Diagram, Units 588A018-060 Ð27Ð208/230-3-60 Wiring Diagram, Units 588A030-060 Ð28Ð460-3-60 Wiring Diagram, Units 588A036-060 Ð29Ð208/230-1-60 Wiring Diagram, Units 589A024-042 Ð30Ð208/230-1-60 Wiring Diagram, Units 589A048,060 Ð31Ð208/230-3-60 Wiring Diagram, Units 589A036-042 Ð32Ð208/230-3-60 Wiring Diagram, Units 589A048,060 Ð33Ð460-3-60 Wiring Diagram, Units 589A036-048 Ð34ÐIndoor Air¯ow and Air¯ow Adjustments Checking and Adjusting Refrigerant ChargeSpeed Ð Superheat Charging Table, 588A024 Ð Superheat Charging Table, 588A018Ð36Ð Ð Superheat Charging Table, 588A030 Ð Superheat Charging Table, 588A036Ð Superheat Charging Table, 588A042 Ð37ÐÐ Superheat Charging Table, 588A060 Ð38ÐÐ Superheat Charging Table, 589A024 Ð Superheat Charging Table, 589A030Ð Superheat Charging Table, 589A036 Ð39ÐÐ Superheat Charging Table, 589A042 Ð Superheat Charging Table, 589A048Ð Superheat Charging Table, 589A060 Ð40ÐRequired Suction-Tube Temperature F Ð41ÐÐ42Ð Ð43Ð Unit 589AMaintenance Wet Coil Pressure DropCooling Sequence of Operation Unit Size Airflow Pressure DropAIR Filter II. Unit TOP RemovalIII. Evaporator Blower and Motor IV. Flue GAS PassagewaysVI. Limit Switch COMBUSTION-AIR BlowerVII. Burner Ignition VIII. Main BurnersXI. Electrical Controls and Wiring Condenser FANXII. Refrigerant Circuit XIII. GAS InputTroubleshooting Symptom Cause RemedyIFM runs when it Poor ¯ame characteristicsIntegrated control MotorService Training LED OFFPage START-UP Checklist TemperaturesPreliminary Information III. START-UP Electrical
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589A, 588A specifications

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