Bryant DURAPAC 558F, Installation & Service Instructions Manual

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Table 1 — Physical Data
LEGEND
*The ZRU140KC compressor is a tandem compressor, consisting of a ZR72KC (25% total capacity) and a
ZR68KC (24% total capacity).
†Circuit 1 uses the lower portion of the condenser coil and lower portion of the evaporator coils; and Circuit 2
uses the upper portion of both coils.
**Pulley has 6 turns. Due to belt and pulley size, moveable pulley cannot be set to 0 to 1 1 /
2
turns open.
††Pulley has 6 turns. Due to belt and pulley size, moveable pulley cannot be set to 0 to
1
/
2
turns open.
***The 558F300 unit requires 2-in. industrial-grade filters capable of handling face velocities up to 625 ft/min
(such as American Air Filter no. 5700 or equivalent).
NOTE:
The 558F180-300 units have a low-pressure switch (standard) located on the suction side.
UNIT 558F 180 210 240 300
NOMINAL CAPACITY (tons) 15 18 20 25
OPERATING WEIGHT For Operating Weights see Fig. 4-6.
COMPRESSOR/MANUFACTURER Scroll/Copeland
Quantity...Model (Ckt 1/Ckt 2) 1...ZR94KC,
1...ZR72KC
1...ZR108KC,
1...ZR94KC
1...ZR125KC,
1...ZR108KC
1...ZRU140KC*,
1...ZR144KC
Stages of Capacity Control (%) 60/40 55/45 55/45 50/50
Number of Refrigerant Circuits 2 2 2 2
Oil (oz) (Ckt 1, Ckt 2) 85,60 106,81 106,106 106, 106
REFRIGERANT TYPE R-22
Expansion Device TXV
Operating Charge (lb-oz)
Circuit 1†
19-8 19-8 19-11 26-13
Circuit 2
13-8 19-2 19-14 25-10
CONDENSER COIL Cross-Hatched 3 /
8
-in. Copper Tubes, Aluminum Lanced,
Aluminum Pre-Coated, or Copper Plate Fins
Rows...Fins/in. 4...15 4...15 4...15 3...15 (2 coils)
Total Face Area (sq ft) 21.7 21.7 21.7 43.4
CONDENSER FAN
Propeller Type
Nominal Cfm 10,500 10,500 14,200 21,000
Quantity...Diameter (in.) 3...22 3...22 2...30 6...22
Motor Hp...Rpm 1 /
2
...1050 1 /
2
...1050 1...1075 1 /
2
...1050
Watts Input (Total) 1100 1100 3400 2200
EVAPORATOR COIL Cross-Hatched 3 /
8
-in. Copper Tubes, Aluminum Lanced or
Copper Plate Fins, Face Split
Rows...Fins/in.
4...15 4...15 4...15 4...15
Total Face Area (sq ft) 17.5 17.5 17.5 17.5
EVAPORATOR FAN Centrifugal Type
Quantity...Size (in.) 2...12x12 2...12 x 12 2...12 x 12 2...12 x 12
Type Drive Belt Belt Belt Belt
Nominal Cfm 6000 7200 8000 10,000
Motor Hp 5 5 7.5 10
Motor Nominal Rpm 1745 1745 1745 1740
Maximum Continuous Bhp
6.13 5.90
8.70 [208/230 v]
9.50 [460 v]
10.20 [208/230 v]
11.80 [460 v]
Motor Frame Size 184T 184T 213T 215T
Nominal Rpm High/Low — — —
Fan Rpm Range Low-Medium Static 873-1021 910-1095 1002-1151 1066-1283
High Static 1025-1200 1069-1287 1193-1369 1332-1550
Motor Bearing Type
Ball Ball Ball Ball
Maximum Allowable Rpm 1550 1550 1550 1550
Motor Pulley Pitch Diameter
Min/Max (in.)
Low-Medium Static 4.9/5.9 4.9/5.9 5.4/6.6 4.9/5.9
High Static 4.9/5.9 4.9/5.9 5.4/6.6 4.9/5.9
Nominal Motor Shaft Diameter (in.) 1 1 /
8
1 1 /
8
1 3 /
8
1 3 /
8
Fan Pulley Pitch Diameter (in.) Low-Medium Static 9.4 9.4 9.4 8.0
High Static
8.0 8.0 7.9 6.4
Nominal Fan Shaft Diameter (in.) 1 7 /
16
1 7 /
16
1 7 /
16
1 7 /
16
Belt, Quantity...Type...Length (in.) Low-Medium Static 1...BX...50 1...BX...50 1...BX...53 2...BX...50
High Static 1...BX...48 1...BX...48 1...BX...50 2...BX...47
Pulley Center Line Distance (in.) 13.3-14.8 13.3-14.8 14.6-15.4 14.6-15.4
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Low-Medium Static 37 37 37 36
High Static
44 34 44 45
Movable Pulley Maximum Full Turns
From Closed Position
6** 6†† 6** 6††
Factory Speed 3.5 3.5 3.5 3.5
Factory Speed Setting (rpm) Low-Medium Static 965 1002 1120 1182
High Static 1134 1178 1328 1470
Fan Shaft Diameter at Pulley (in.)
1
7
/
16
1
7
/
16
1
7
/
16
1
7
/
16
HIGH-PRESSURE SWITCH (psig)
Cutout 426
Reset (Auto) 320
LOW-PRESSURE SWITCH (psig)
Cutout 27
Reset (Auto) 44
FREEZE PROTECTION THERMOSTAT (F)
Opens 30 ± 5
Closes 45 ± 5
OUTDOOR-AIR INLET SCREENS Cleanable
Quantity...Size (in.) 2...20 X 25 X 1
1...20 X 20 X 1
RETURN-AIR FILTERS Throwaway***
Quantity...Size (in.) 4...20 x 20 x 2
4...16 x 20 x 2
POWER EXHAUST 1 /
2
Hp, 208/230-460 v Motor Direct Drive, Propeller-Fan (Factory-Wired for 460 v)
Bhp — Brake Horsepower
TXV —
Thermostatic Expansion Valve