Bryant 677C--A Compressors, Refrigerant Metering, Cfm, Furnace Section, Charge

Page 9

 

 

 

 

 

 

 

Table 1 – Physical Data - Unit 677C--

A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UNIT SIZE

 

 

24040

24060

30040

 

30060

 

36060

36090

42060

 

42090

NOMINAL CAPACITY ---

ton

 

 

2

 

2

2---

1/2

 

2---

1/2

 

 

3

 

3

3---

1/2

 

3---

1/2

SHIPPING WEIGHT ---

lb.

 

368

368

378

 

378

 

450

450

491

 

491

 

 

 

(kg)

 

167

167

171

 

171

 

204

204

223

 

223

COMPRESSORS

 

 

 

 

 

 

 

 

 

 

Scroll

 

 

 

 

 

 

 

 

Quantity

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

 

 

 

 

REFRIGERANT (R 410A)---

 

9.5

9.5

10.5

 

10.5

 

9.0

9.0

14.0

 

14.0

Quantity ---

lb

 

 

 

 

 

 

 

(kg)

 

 

4.3

4.3

4.8

 

4.8

 

4.1

4.1

6.4

 

6.4

REFRIGERANT METERING

 

 

 

 

 

 

 

Indoor TXV, Outdoor Accurater

 

 

 

 

 

 

 

DEVICE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTDOOR ORIFICE

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0.038 (Left OD Coil)

in. (qty)

 

 

0.032 (2)

0.032 (2)

0.038 (2)

 

0.038 (2)

 

0.040 (2)

0.040 (2)

 

 

 

 

0.040 (Right OD Coil)

(mm)

 

 

 

.81

.81

.97

 

.97

 

1.02

1.02

 

.97/1.02

 

 

OUTDOOR COIL

 

 

2

...21

2

...21

2...

21

 

2...

21

 

2

...21

2

...21

2...

21

 

2...

21

Rows...Fins/in.

 

 

 

 

 

Face Area---

sq ft

 

 

13.6

13.6

15.4

 

15.4

 

13.6

13.6

19.4

 

19.4

OUTDOOR FAN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nominal Cfm

 

 

2500

2500

2600

 

2600

 

3000

3000

3500

 

3500

Diameter---

in.

 

 

 

22

 

22

 

22

 

 

22

 

 

22

 

22

 

22

 

 

22

 

 

(mm)

 

559

559

559

 

559

 

559

559

559

 

559

Motor Hp (Rpm)

 

 

1/8 (825)

1/8 (825)

1/8 (825)

 

1/8 (825)

 

1/4 (1100)

1/4 (1100)

1/8 (825)

 

1/8 (825)

INDOOR COIL

 

 

3...

17

3...

17

3...

17

 

3...

17

 

3...

17

3...

17

3...

17

 

3...

17

Rows...Fins/in.

 

 

 

 

 

Face Area---

sq ft

 

 

3.7

3.7

3.7

 

3.7

 

4.7

4.7

4.7

 

4.7

INDOOR BLOWER

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Nominal Cooling Airflow---

(CFM)

 

800

800

1000

 

1000

 

1200

1200

1400

 

1400

Size---

in.

 

 

10x10

10x10

10x10

 

10x10

 

11x10

11x10

11x10

 

11x10

 

(mm)

 

 

254x254

254x254

254x254

 

254x254

 

279x254

279x254

279x254

 

279x254

Motor

---hp

 

 

1/2

1/2

1/2

 

1/2

 

3/4

3/4

3/4

 

3/4

FURNACE SECTION*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Burner Orifice

 

 

2

...44

2

...38

2...

44

 

2...

44

 

2

...38

3

...38

2...

38

 

3...

38

Natural Gas Qty...

Drill Size

 

 

 

 

Propane GasQty...

Drill Size

 

2

...55

2

...53

2...

55

 

2...

53

 

2

...53

3

...53

2...

53

 

3...

53

HIGH---PRESSURE SWITCH

 

 

 

 

 

 

 

 

 

650 +/---

15

 

 

 

 

 

 

 

 

(psig) Cut---

out

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Reset (Auto)

 

 

 

 

 

 

 

 

 

 

420 +/---

25

 

 

 

 

 

 

 

 

LOSS---OF---

CHARGE /

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LOW---PRESSURE SWITCH

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Liquid Line) (psig)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cut---

out

 

 

 

 

 

 

 

 

 

 

20 +/---

5

 

 

 

 

 

 

 

 

Reset (auto)

 

 

 

 

 

 

 

 

 

 

45 +/---

 

10

 

 

 

 

 

 

 

 

RETURN---AIR FILTERS † }

 

20x20x1

 

 

20x24x1

 

 

 

 

 

 

 

24x30x1

 

 

 

 

Throwaway

(in.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(mm)

 

 

508x508x25

 

 

508x610x25

 

 

 

 

 

610x762x25

 

 

 

 

*Based on altitude of 0 to 2000 ft (0---

610 m).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

{Required filter sizes shown are based on the larger of the ARI (Air Conditioning and Refrigeration Institute) rated cooling airflow or the heating airflow velocity of 300 ft/minute for high ---capacity type. Air filter pressure drop for non ---standard filters must not exceed 0.08 IN. W.C.

}If using accessory filter rack refer to filter rack installation instructions for correct filter size and quantity.

677C-- -- A

Basepan Downflow (Vertical) Supply Knockout

Horizontal Duct Covers

A09076

Basepan Downflow (Vertical) Return Knockout

A09077

Fig. 8 - Supply and Return Duct Opening

3

4

3

 

4

 

 

2

1

 

2

1

 

 

 

 

 

 

 

 

 

INSTRUCTIONS FOR REMOVING DOWNSHOT PANELS

1.Score groove in corner 1 in both directions as far as you can reach.

2.Starting in corner 1, tap-out all sides with a small hammer. Be careful not to damage any other part of unit.

3.If side from corner 3 to 4 is not accessible due to heat exchanger, pivot panel up and down by hand until remaining side breaks off.

A09054

Fig. 9 - Vertical (Downflow) Discharge Duct Knockouts

9

Image 9
Contents Safety Considerations Table of ContentsIntroduction Receiving and Installation677C--A24-30 Unit Dimensions 677C--A36-60 Unit Dimensions CPRFCURB010A00 Unit SizeCPRFCURB011A00 CPRFCURB012A00Rig and Place Unit InspectionRigging/Lifting of Unit See Fig Install Gas Piping Install Flue HoodConnect Condensate Drain Carbon Monoxide Poisoning HazardInstall Duct Connections Configuring Units for Downflow Vertical DischargeFire or Explosion Hazard Refrigerant Metering CompressorsCFM Furnace SectionPhysical Data Unit 677C--A Cont’d Maximum Gas Flow CapacityHeating Inputs Special Procedures for 208-V Operation Install Electrical ConnectionsHigh-Voltage Connections Control Voltage ConnectionsPRE-START-UP Balance Point Setting-Thermidistat or Hybrid ThermostatTransformer Protection FIRE, EXPLOSION, Electrical Shock HazardSTART-UP Start-up Heating and Make Adjust- mentsCheck for Refrigerant Leaks Unit Sequence of OperationCheck Heating Control Adjust Gas InputCheck Gas Input Unit Damage HazardLimit Switches Airflow and Temperature RiseCheck Burner Flame Normal OperationRollout Switch Start-up Cooling and Make Adjust- mentsChecking and Adjusting Refrigerant Charge Indoor Airflow and Airflow AdjustmentsGas Heating Fan Speed Set-up Two Cooling Fan Speeds Set-up Dehumidification feature usedContinuous Fan Operation Color Coding for Indoor Fan Motor LeadsFilter Size CFM 677C--A Wet Coil Pressure DropRise Speed Color Range Unit Heating Motor Wire1505 1452 1413 1358 1323 1282 1234 1169 1130 25 55oF Heating 1962 1915 1880 1843 1794 1753 1711 1675 1628 35 65oF Heating 1962 1915 1880 1843 1794 1753 1711 1675 1628 30 60oF Heating 1887 1847 1783 1726 1677 1625 1578 1527 1432 30 60oF Heating 677C a 208/230-3-60 Wiring Diagram, Unit 677C--A Cooling Charging Table-Subcooling Cleaning the Blower Motor and Wheel MaintenanceAir Filter Indoor Blower and MotorInduced Draft combustion air Blower Assembly Limit SwitchBurner Ignition Flue Gas PassagewaysOutdoor Fan Electrical Controls and WiringRefrigerant Circuit EXPLOSION, Personal Injury and Environmental HazardLoss of Charge Switch Pressure SwitchesGas Input Indoor AirflowHigh-Pressure Switch Copeland Scroll Compressor Puron RefrigerantExplosion Hazard Refrigerant System Unit Operation and Safety HazardCompressor Oil Servicing Systems on Roofs and with Synthetic materialsTroubleshooting START-UP ChecklistPuronr R-410A Quick Reference Guide Symptom Cause Remedy Troubleshooting Guide Cooling or Heat Pump Heating ModeTroubleshooting Guide-Heating Troubleshooting Guide-LED Status CodesLED OFF Remove and Store in Job Files TemperaturesPreliminary Information Model no III. START-UP Electrical Supply Voltage Compressor Amps