Bryant Single Package Rooftop Electric Heating/Electric Cooling Unit 558D Benutzerhandbuch
Table 1 — Specifications
BASE UNIT 558D
036
048
060
072
NOMINAL CAPACITY (tons)
3
4
5
6
OPERATING WEIGHT (lb)
Unit
365
375
395
470
Durablade Economizer
34
34
34
34
PARABLADE Economizer
42
42
42
42
Roof Curb
115
115
115
115
COMPRESSOR TYPE
Reciprocating
Reciprocating
Reciprocating
Scroll
Quantity
1
1
1
1
Oil (oz)
50
50
50
54
REFRIGERANT TYPE
R-22
Operating Charge (lb-oz)
3-6
5-8
7-0
7-11
CONDENSER COIL
Enhanced Copper Tubes, Aluminum Lanced Fins
Rows...Fins/in.
1...17
1...17
2...17
2...17
Total Face Area (sq ft)
7.36
13.19
10.42
10.42
CONDENSER FAN
Propeller Type
Nominal Cfm
3500
4000
4000
4000
Quantity...Diameter (in.)
1...22.0
1...22.0
1...22.0
1...22.0
Motor Hp...Rpm
1
⁄
4
...1100
1
⁄
4
...1100
1
⁄
4
...1100
1
⁄
4
...1100
Watts Input (Total)
325
325
325
325
EVAPORATOR COIL
Enhanced Copper Tubes, Aluminum Double-Wavy Fins
Rows...Fins/in.
2...15
2...15
3...15
4...15
Total Face Area (sq ft)
4.17
5.5
5.5
5.5
EVAPORATOR FAN
Centrifugal Type
Quantity...Size (in.)
Std
1...10 x 10
1...10 x 10
1...11 x 10
1...10 x 10
Alt
1...10 x 10
1...10 x 10
1...10 x 10
—
Type Drive
Std
Direct
Direct
Direct
Belt
Alt
Belt
Belt
Belt
—
Nominal Cfm
Std
1200
1600
2000
2400
Alt
1200
1600
2000
—
Maximum Continuous Bhp
Std
.34
.75
1.20
2.40
Alt
1.00
1.00
1.3/2.4*
—
Motor Frame Size
Std
48
48
48
56
Alt
48
48
48/56*
—
Nominal Rpm High/Low
Std
860/800
1075/970
1075/970
—
Alt
—
—
—
—
Fan Rpm Range
Std
—
—
—
1070-1460
Alt
760-1090
840-1185
900-1300
—
Motor Bearing Type
Ball
Ball
Ball
Ball
Maximum Allowable Rpm
2100
2100
2100
2100
Motor Pulley Pitch Diameter Min/Max (in.)
Std
—
—
—
2.8/3.8
Alt
1.9/2.9
1.9/2.9
2.4/3.4
—
Nominal Motor Shaft Diameter (in.)
Std
1
⁄
2
1
⁄
2
1
⁄
2
5
⁄
8
Alt
1
⁄
2
1
⁄
2
5
⁄
8
—
Fan Pulley Pitch Diameter (in.)
Std
—
—
—
4.5
Alt
4.5
4.0
4.5
—
Belt, Quantity...Type...Length (in.)
Std
—
—
—
1...A...40
Alt
1...A...39
1...A...36
1...A...39
—
Pulley Center Line Distance (in.)
Std
—
—
—
14.7-15.5
Alt
10.0-12.4
10.0-12.4
14.7-15.5
—
Speed Change per Full Turn of
Std
—
—
—
80
Movable Pulley Flange (rpm)
Alt
65
70
80
—
Movable Pulley Maximum Full Turns
Std
—
—
—
5
From Closed Position
Alt
5
5
5
—
Factory Setting
Std
—
—
—
3
Alt
3
3
3
—
Factory Speed Setting (rpm)
Std
—
—
—
1225
Alt
890
980
1060
—
Fan Shaft Diameter at Pulley (in.)
5
⁄
8
5
⁄
8
5
⁄
8
5
⁄
8
HIGH-PRESSURE SWITCH (psig)†
Standard Compressor Internal Relief (Differential)
450 ± 50
500 ± 50
Cutout
428
428
Reset (Auto.)
320
320
LOW-PRESSURE/LOSS-OF-CHARGE SWITCH (Liquid Line)(psig)†
Cutout
7 ± 3
Reset (Auto.)
22 ± 7
FREEZE-PROTECTION THERMOSTAT (F)†
Opens
30 ± 5
Closes
45 ± 5
OUTDOOR-AIR INLET SCREENS
Cleanable
Quantity...Size (in.)
1...20 x 24 x 1
RETURN-AIR FILTERS
Throwaway
Quantity...Size (in.)
2...16 x 25 x 2
LEGEND
Bhp — Brake Horsepower
*Single phase units — 1.3 bhp/48 frame.
Three phase units — 2.4 bhp/56 frame.
†Requires an optional or accessory controls upgrade kit.
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