installation, start-up and
service instructions
COMMERCIAL AIR-COOLED
CONDENSING UNITS
569C
576B
Cancels: II 569C-72-3
II 569C-72-4
5/1/99
IMPORTANT —READ BEFORE INSTALLING
1. Read and become familiar with these installation
instructions before installing this unit (Fig. 1).
2. Be sure the installation conforms to all applicable local
and national codes.
3. These instructions contain important information for the
proper maintenance and repair of this equipment. Re-
tain these instructions for future use.
CONTENTS
Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . .
1
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
I. Locate the Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . .
II. Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . .
III. Compressor Mounting . . . . . . . . . . . . . . . . . . . . . .
IV. Unit Refrigerant Piping Connections . . . . . . . . . .
V. Electrical Connections . . . . . . . . . . . . . . . . . . . . . .
VI. Accessory Installation . . . . . . . . . . . . . . . . . . . . . .
2
2
2
2
6
9
Fig. 1 — Typical Unit (569C072 Shown)
Understand the signal words — DANGER, WARNING, and
CAUTION. These words are used with the safety-alert sym-
bol. Danger identifies the most serious hazards which will
result in severe personal injury or death. Warning indicates
a condition that could result in personal injury. Caution is
used to identify unsafe practices which would result in minor
personal injury or product and property damage.
PRE-START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
I. Start-Up and Adjustments . . . . . . . . . . . . . . . . . . 10
CARE AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . 10
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13
I. Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
II. Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
III. Condenser-Fan Adjustment . . . . . . . . . . . . . . . . 11
IV. Capacity Control . . . . . . . . . . . . . . . . . . . . . . . . . . 12
V. Compressor Removal . . . . . . . . . . . . . . . . . . . . . 12
VI. Crankcase Heater . . . . . . . . . . . . . . . . . . . . . . . . . 12
VII. Refrigerant Charge . . . . . . . . . . . . . . . . . . . . . . . . 12
VIII. Refrigerant Service Ports . . . . . . . . . . . . . . . . . . . 12
WARNING: Before performing service or mainte-
nance operations on unit, turn off main power switch
to unit. Electrical shock could cause personal injury.
1. The power supply (volts, hertz, and phase) must corre-
spond to that specified on unit rating plate.
2. The electrical supply provided by the utility must be suf-
ficient to handle load imposed by this unit.
3. Refer to the Locate the Unit section on page 2 and
Fig. 2 and 3 for locations of electrical inlets, required
clearances, and weight distribution based on recom-
mended support points before setting unit in place.
TROUBLESHOOTING GUIDE . . . . . . . . . . . . . . . . . . . . 14,15
4. This installation must conform with local building codes.
Refer to local plumbing or wastewater codes and other
applicable local codes.
SAFETY CONSIDERATIONS
WARNING: Improper installation, adjustment, alter-
ation, service, maintenance, or use can cause explo-
sion, fire, electric shock, or other occurrences which may
injure you or damage your property. Consult a quali-
fied installer or service agency for information or assis-
tance. The qualified installer or agency must use only
factory-authorized kits or accessories when repairing this
product.
INSTALLATION
NOTE: When installing any accessory item, see the manu-
facturer ’s installation instructions packaged with the acces-
sory. A qualified agency must use factory-authorized kits or
accessories when modifying this unit.
The 569C072,090, and 120 units use hermetic compressors.
The 576B090,102, and 120 units use semi-hermetic compres-
sors. Refer to Tables 1A and 1B.
Recognize safety information. This is the safety-alert sym-
bol. (
) When you see this symbol on the unit and in
instructions or manuals, be alert to the potential for per-
sonal injury.
Table 1A — Specifications (English)
UNIT
569C072
569C090
569C120
576B090
576B102
576B120
NOMINAL CAPACITY (Tons)
6
71⁄2
10
71⁄2
81⁄2
10
OPERATING WEIGHT (lb)
Aluminum Coils (Standard)
Copper Coils (Optional)
340
386
370
438
395
472
510
578
564
632
564
632
RIGGING WEIGHT (lb)
Aluminum Coils (Standard)
Copper Coils (Optional)
390
436
420
488
445
522
560
628
614
682
614
682
REFRIGERANT*
COMPRESSOR
Quantity...Type
R-22
Bristol, Reciprocating Copeland, Scroll Copeland, Scroll
Reciprocating, Semi-Hermetic
1...06DH824
(See Note)
1...H26A72Q
1...ZR94KC
1...ZR125KC
1...06DA818 1...06DA824
4
Quantity Cylinders
Speed (Rpm)
Oil Charge (oz) (ea)
2
3500
65
—
3500
85
—
3500
110
6
1750
88
1750
128
CONDENSER FAN
Quantity...Rpm
Propeller; Direct Drive
1...850
1...1100
26
Diameter (in.)
26
1
3
Motor Hp (NEMA)
Nominal Airflow (cfm)
⁄
3
⁄
4
3800
6500
7000
6500
6500
6500
CONDENSER COIL
Face Area (sq ft)
Storage Capacity (lb)†
Enhanced Copper Tubes, Aluminum Lanced Fins
12.24
11.26
15.75
14.88
20.5
18.0
18.0
16.56
18.0
16.56
18.87
16.56
CONNECTIONS (sweat)
Suction (in.)
Liquid (in.)
11⁄8
11⁄8
11⁄8
11⁄8
11⁄8
11⁄8
1
1
5
1
5
5
⁄
2
⁄
2
⁄
8
⁄
2
⁄
8
⁄
8
CONTROLS
Pressurestat Settings (psig)
High Cutout
Cut-in
426 Ϯ
7
320 Ϯ 20
Low Cutout
Cut-in
7 Ϯ
22 Ϯ
3
5
LEGEND
NOTE: Unit 576B120 has one step of unloading. Full load is 100% ca-
pacity, and one step of unloading is 67% capacity. Unit 576B120 has
the following unloader settings: load is 70 Ϯ 1 psig and unload is
60 Ϯ 2 psig.
NEMA
—
National Electrical Manufacturing Association
*Unit is factory supplied with holding charge only.
†Storage capacity of condenser coil with coil 80% full of liquid R-22 at
124 F.
—3—
Table 1B — Specifications (SI)
UNIT
569C072
569C090
569C120
576B090
576B102
576B120
NOMINAL CAPACITY (kW)
21
26
35
26
29.9
35
OPERATING WEIGHT (kg)
Aluminum Coils (Standard)
Copper Coils (Optional)
154
175
168
199
179
214
231
262
256
287
256
287
RIGGING WEIGHT (kg)
Aluminum Coils (Standard)
Copper Coils (Optional)
176
198
191
221
202
237
254
285
279
309
279
309
REFRIGERANT*
COMPRESSOR
Quantity...Type
R-22
Bristol, Reciprocating Copeland, Scroll Copeland, Scroll
Reciprocating, Semi-Hermetic
1...06DH824
(See Note 1)
1...H26A72Q
1...ZR94KC
1...ZR125KC
1...06DA818 1...06DA824
4
Quantity Cylinders
Speed (R/s)
Oil Charge (L) (ea)
2
58.4
1.92
—
58.4
2.51
—
58.4
3.25
6
29.2
2.60
29.2
3.78
CONDENSER FAN
Quantity...R/s
Propeller; Direct Drive
1...14.2
1...18.3
660
Diameter (mm)
660
1
3
Motor Hp (NEMA)
Nominal Airflow (L/s)
⁄
3
⁄
4
1800
3050
3300
3050
3050
3050
CONDENSER COIL
Face Area (sq m)
Storage Capacity (kg)†
Enhanced Copper Tubes, Aluminum Lanced Fins
1.14
5.1
1.46
6.75
1.90
8.6
1.67
7.5
1.67
7.5
1.67
7.5
CONNECTIONS (sweat)
Suction (in.)
Liquid (in.)
11⁄8
11⁄8
11⁄8
11⁄8
11⁄8
11⁄8
1
1
5
1
5
5
⁄
2
⁄
2
⁄
8
⁄
2
⁄
8
⁄
8
CONTROLS
Pressurestat Settings (kPa)
High Cutout
Cut-in
2937 Ϯ 48
2206 Ϯ 138
48 Ϯ 20
Low Cutout
Cut-in
152 Ϯ 34
LEGEND
NOTES:
1. Unit 576B120 has one step of unloading. Full load is 100% capacity,
and one step of unloading is 67% capacity. Unit 576B120 has the
following unloader settings: load is 483 Ϯ 6.9 kPa and unload is
414 Ϯ 13.8 kPa.
NEMA
—
National Electrical Manufacturing Association
*Unit is factory supplied with holding charge only.
†Storage capacity of condenser coil with coil 80% full of liquid R-22 at
51 C.
2. Equivalent mm values for connectors are as follows:
in.
mm
1
⁄
⁄
2
8
12.7
15.9
28.6
5
11⁄8
—4—
ELECTRICAL CONNECTIONS
UNIT DIM. A DIM. B DIM. C DIM. D DIM. E DIM. F
WEIGHT CHART*
1Ј-61⁄2
Љ
1Ј-23⁄4
[470.0] [375.0]
1Ј-8Љ 1Ј-61⁄2
[508.0] [470.0]
1Ј-9Љ 1Ј-8Љ
Љ
—
—
—
—
1Ј-21⁄4
Љ
1Ј-45⁄16Љ 2Ј-95⁄16Љ
UNIT Std Unit Corner W Corner X Corner Y Corner Z
Lb Kg Lb Kg Lb Kg Lb Kg Lb Kg
CONNECTION SIZES
13⁄8Љ DIA [35] FIELD POWER SUPPLY HOLE
569C072
569C090
569C120
576B090
576B102
576B120
[362]
[415] [846.5]
AA
BB
CC
DD
Љ
1Ј-3Љ 2Ј-5⁄16Љ 3Ј-57⁄16Љ
[381] [613] [1052.5]
1Ј-3Љ 2Ј-5⁄16Љ 3Ј-57⁄16Љ
[613] [1052.5]
569C072 340 154 86 39 53 24
569C090 370 168 86 39 78 35
77 35 124 56
99 45 107 49
2Љ DIA [51] POWER SUPPLY KNOCK-OUT
21⁄2Љ DIA [64] POWER SUPPLY KNOCK-OUT
2Ј-0Љ
[533.4] [508.0] [609.6] [381]
7
569C120 395 179 89 40 92 42 109 49 105 48
576B090 510 231 115 52 89 40 133 60 173 87
576B102 564 256 133 60 97 44 141 64 193 88
576B120 564 256 133 60 97 44 141 64 193 88
*Weights are for aluminum coils.
⁄8Љ DIA [22] FIELD CONTROL WIRING HOLE
1Ј-6Љ 1Ј-43⁄4
[457.2] [425.5] [858.8] [381]
1Ј-7Љ
1Ј-5Љ 2Ј-913⁄16Љ 1Ј-3Љ 2Ј-5⁄16Љ 3Ј-57⁄16Љ
[482.6] [431.8] [858.8] [381] [613] [1052.5]
1Ј-7Љ
1Ј-5Љ 2Ј-913⁄16Љ 1Ј-3Љ 2Ј-5⁄16Љ 3Ј-57⁄16Љ
[482.6] [431.8] [858.8] [381] [613] [1052.5]
Љ
2Ј-913⁄16Љ 1Ј-3Љ 2Ј-5⁄16Љ 3Ј-57⁄16Љ
[613] [1052.5]
SERVICE VALVE CONNECTIONS — 60 Hz
UNIT
SUCTION
11⁄8Љ [28.6]
11⁄8Љ [28.6]
11⁄8Љ [28.6]
11⁄8Љ [28.6]
11⁄8Љ [28.6]
11⁄8Љ [28.6]
LIQUID
1
1
5
1
5
5
569C072
569C090
569C120
576B090
576B102
576B120
⁄
⁄
⁄
⁄
⁄
⁄
2Љ [12.7]
2Љ [12.7]
8Љ [15.9]
2Љ [12.7]
8Љ [15.9]
8Љ [15.9]
c. Between units, control box side, 42 in. [1067]
per NEC (National Electrical Code) (U.S.A.
Standard).
d. Between unit and ungrounded surfaces, con-
trol box side, 36 in. [914] per NEC.
e. Between unit and block or concrete walls and
other grounded surfaces, control box side,
42 in. [1067] per NEC.
5. With the exception of the clearance for the con-
denser coil as stated in note 4b, a removable
fence or barricade requires no clearance.
6. Units may be installed on combustible floors made
from wood or Class A, B, or C roof covering
material.
NOTES:
1. Dimensions in [ ] are in millimeters.
2.
3.
Center of Gravity. See chart for dimensions.
Direction of Airflow.
4. Minimum clearance (local codes or jurisdiction may prevail):
a. Condenser coil, for proper airflow, 36 in. [914] one side, 12 in. [305]
the other. The left or rear side getting the greater clearance is optional.
b. Overhead, 60 in. [1524] to assure proper condenser fan operation.
Fig. 3 — Base Unit Dimensions
RIGGING WEIGHT*
UNIT
A
B
C
in.
lb
kg
in.
mm
1143
1143
1143
1143
1143
1143
in.
mm
978
978
978
978
978
978
mm
904
569C072
569C090
569C120
576B090
576B102
576B120
390
420
445
560
614
614
176
191
202
254
279
279
45.0
45.0
45.0
45.0
45.0
45.0
38.5
38.5
38.5
38.5
38.5
38.5
35.5
43.5
43.5
43.5
43.5
43.5
1105
1105
1105
1105
1105
*Weights are for aluminum coils.
Fig. 4 — Rigging Label
—5—
Table 3 — Liquid Line Data
LIQUID LINE
MAX
ALLOWABLE
LIQUID LIFT
Max Allowable
Pressure Drop
Max Allowable
Temp Loss
UNIT
Ft
86
60
70
60
65
65
M
psi
7
kPa
48.3
48.3
48.3
48.3
48.3
48.3
F
2
2
2
2
2
2
C
1
1
1
1
1
1
569C072
569C090
569C120
576B090
576B102
576B120
26.2
18.3
21.3
18.3
19.8
19.8
7
7
7
7
7
Fig. 5 — Typical Compressor Mounting (576B Units)
B. Filter Drier and Moisture Indicator
NOTE: Values shown are for units operating at 45 F (7.2 C) saturated
suction and 95 F (35 C) entering air.
V. ELECTRICAL CONNECTIONS
The filter drier is factory installed. Moisture indicator is a
field-installed accessory and should be installed just after liq-
uid line shutoff valve. Do not use a receiver. A receiver is not
supplied with the unit and should not be used.
WARNING: The unit cabinet must have an uninter-
rupted, unbroken electrical ground to minimize the pos-
sibility of personal injury if an electrical fault should
occur. This ground may consist of electrical wire con-
nected to the unit ground lug in the control compart-
ment or conduit approved for electrical ground when
installed in accordance with the NEC and local electri-
cal codes. Failure to adhere to this warning could re-
sult in personal injury.
NOTE: Unit is shipped with R-22 holding charge. System pres-
sure must be relieved before removing caps. Recover refrig-
erant prior to brazing.
Pass nitrogen or other inert gas through piping while braz-
ing to prevent formation of copper oxide.
Install field-supplied thermostatic expansion valve(s) in evapo-
rator section. It is r ecom m en d ed that a field supplied liq-
uid line solenoid be positioned in the main liquid line (near
the evaporator coil). It should be wired to close when com-
pressor stops to minimize refrigerant migration during the
‘‘OFF’’ cycle.
CAUTION: Failure to follow these precautions could
result in damage to the unit being installed:
A. Field Power Supply (Fig. 6-8)
1. Make all electrical connections in accordance with NEC
ANSI/NFPA (American National Standards Institute/
National Fire Protection Association) 70, latest edition,
and local electrical codes governing such wiring. Refer
to unit wiring diagram.
Table 2 — Refrigerant Piping Sizes
LINEAR LENGTH OF PIPING — FT (M)
0-25
(0-7.6)
25-50
(7.6-15.2)
50-75
(15.2-22.9)
75-100
(22.9-30.5)
2. Use only copper or copper-clad conductor fan connec-
tions between field-supplied electrical disconnect switch
and unit. DO NOT USE ALUMINUM WIRE. Maximum
wire size is no. 2 AWG (American Wire Gage).
UNIT
Line Size (in. OD)
L
S
L
S
L
S
L
S
1
1
5
1
5
5
1
1
1
569C072
569C090
569C120
576B090
576B102
576B120
⁄
⁄
⁄
⁄
⁄
⁄
2
2
8
2
8
8
11⁄8
11⁄8
11⁄8
11⁄8
11⁄8
11⁄8
⁄
⁄
⁄
⁄
⁄
⁄
2
2
8
2
8
8
11⁄8
11⁄8
13⁄8
11⁄8
11⁄8
11⁄8
⁄
⁄
⁄
⁄
⁄
⁄
2
8
8
8
8
8
11⁄8
11⁄8
13⁄8
11⁄8
13⁄8
13⁄8
⁄
⁄
⁄
⁄
⁄
⁄
2
8
8
8
8
8
11⁄8
13⁄8
13⁄8
13⁄8
13⁄8
13⁄8
1
5
1
5
5
5
5
5
5
5
5
5
5
5
5
3. Voltage to compressor terminals during operation must
be within voltage range indicated on unit nameplate (also
see Table 4). On 3-phase units, voltages between phases
must be balanced within 2% and the current within 10%.
Use the formula shown in Table 4, Note 2, to determine
the percent voltage imbalance. Operation on improper
line voltage or excessive phase imbalance constitutes abuse
and may cause damage to electrical components. Such
operation would invalidate any applicable warranty.
LEGEND
S
L
—
Liquid Line
—
Suction Line
NOTES:
1. Pipe sizes are based on a 2° F (1° C) loss for liquid and suction
lines.
4. Insulate low-voltage wires for highest voltage con-
tained within conduit when low-voltage control wires are
run in same conduit as high-voltage wires.
2. Pipe sizes are based on the maximum linear length shown for each
column, plus a 50% allowance for fittings.
3. Charge units with R-22 in accordance with unit installation instructions.
4. Line size conversion to mm is:
5. Do not damage internal components when drilling through
any panel to mount electrical hardware, conduit, etc.
in.
mm
1
⁄
⁄
2
8
12.7
15.9
28.6
34.9
5
11⁄8
13⁄8
—6—
All units except 208/230-v units are factory wired for the volt-
age shown on the nameplate. If the 208/230-v unit is to be
connected to a 208-v power supply, the transformer must be
rewired by moving the black wire from the 230-v orange wire
on the transformer and connecting it to the 200-v red wire
from the transformer. The end of the orange wire must then
be insulated.
Refer to unit label diagram for additional information. Pig-
tails are provided for field wire connections. Use factory-
supplied splices or UL (Underwriters’ Laboratories) approved
copper/aluminum connector.
B. Control Voltage Connections
Install an accessory thermostat assembly according to instal-
lation instructions included with the accessory. Locate ther-
mostat assembly on a solid wall in the conditioned space to
sense average temperature in accordance with thermostat
installation instructions.
Route thermostat cable or equivalent single leads of colored
wire from subbase terminals to low-voltage connections on
unit (shown in Fig. 7) as described in Steps 1 through 4
below.
NOTE: Refer to Table 5 for wire conversion information.
When installing units, provide a disconnect per NEC.
NOTE: For wire runs up to 50 ft (15.2 m), use no. 18 AWG
(0.82 mm) insulated wire (35 C minimum). For 50 to 75 ft
(15.2 to 22.9 m), use no. 16 AWG (1.30 mm) insulated wire
(35 C minimum). For over 75 ft (22.9 m), use no. 14 AWG
(2.08 mm) insulated wire (35 C minimum). All wire larger
than no. 18 AWG (0.82 mm) cannot be directly connected to
the thermostat and will require a junction box and splice at
the thermostat.
All field wiring must comply with NEC and local
requirements.
Install field wiring as follows:
1. Install conduit through side panel openings.
2. Install power lines to terminal connections as shown in
Fig. 6.
1. Connect thermostat wires to screw terminals of low volt-
age connection board.
2. Pass the control wires through the hole provided in the
corner post. See Fig. 8.
3. Feed wire through raceway built into the corner post
and into the 24-v thermostat connection board. The 24-v
thermostat connection is located on the left side of the
low voltage connection compartment. The raceway pro-
vides the UL required clearance between the high- and
low-voltage wiring.
4. Total combined amperage draw of the field-installed liq-
uid line solenoid valve and indoor fan contactor must
not exceed 22 va. If the specified va must be exceeded,
use a remote relay to switch the load.
LEGEND
C
NEC
—
—
Contactor
National Electrical Code (U.S.A. Standard)
Field Wiring
Factory Wiring
Splice Connection (Factory Supplied)
Fig. 6 — Power Wiring Connections
LEGEND
AHA
—
—
—
—
—
—
—
Adjustable Heat Anticipator
Contactor, Compressor
Circuit Breaker
LLSV
LPS
TB
—
—
—
—
—
—
—
Liquid Line Solenoid Valve
Low-Pressure Switch
Terminal Block
Thermostat-Cooling
Time-Delay Relay
Thermostat-Heating
Transformer
Terminal (Marked)
Splice
Factory Wiring
Field Control Wiring
To Indicate Common Potential Only,
Not To Represent Wiring
C
CB
CC
CLO
HPS
IFC
Cooling Compensator
Compressor Lockout
TC
TDR
TH
TRAN
High-Pressure Switch
Indoor (Evaporator) Fan Contactor
Fig. 7 — Typical Control Wiring Connections (569C Shown)
—7—
Table 4 — Electrical Data
VOLTAGE RANGE
COMPRESSOR
RLA LRA
OFM
FLA
POWER SUPPLY
NOMINAL VOLTAGE
(V-Ph-Hz)
UNIT
Min
Max
MCA
MOCP
208/230-3-60
460-3-60
575-3-60
220-3-50
400-3-50
187
414
518
198
360
254
508
632
242
440
21.8
9.6
142
72
1.9
1.0
1.9
1.0
1.0
25.6
12.9
11.4
25.6
12.9
35
15
15
35
15
569C072
7.6
58
19.0
9.5
142
72
208/230-3-60
460-3-60
575-3-60
220-3-50
400-3-50
187
414
518
198
360
254
508
632
242
440
28.8
14.7
10.8
28.8
14.7
195
95
3.8
1.9
1.9
1.5
1.5
39.8
20.3
15.4
37.5
19.9
45
20
15
45
20
569C090
569C120
80
195
90
208/230-3-60
460-3-60
575-3-60
220-3-50
400-3-50
187
414
518
198
360
254
508
632
242
440
37.8
17.2
12.3
37.8
17.2
239
125
80
239
114
3.1
1.4
1.4
1.4
1.4
46.2
22.7
19.3
46.2
22.7
60
30
25
60
30
208/230-3-60
380-3-60
460-3-60
575-3-60
220-3-50
400-3-50
187
342
414
518
198
342
254
418
508
632
253
460
31.5
19.0
15.7
12.6
31.5
15.7
160
75
3.1
2.2
1.4
1.4
1.4
1.4
42.5
26.0
21.0
17.2
42.5
21.0
50
35
25
20
50
25
80
576B090
576B102
576B120
64
160
80
208/230-3-60
380-3-60
460-3-60
575-3-60
220-3-50
400-3-50
187
342
414
518
198
342
254
418
508
632
253
460
39.7
24.0
19.9
15.9
39.7
19.9
198
93
3.1
2.2
1.4
1.4
1.4
1.4
52.7
32.2
26.3
21.3
52.7
26.3
70
40
35
25
70
35
99
79
198
99
208/230-3-60
380-3-60
460-3-60
575-3-60
220-3-50
400-3-50
187
342
414
518
198
342
254
418
508
632
253
460
39.7
24.0
19.9
15.9
39.7
19.9
198
93
3.1
2.2
1.4
1.4
1.4
1.4
52.7
32.2
26.3
21.3
52.7
26.3
70
40
35
25
70
35
99
79
198
99
LEGEND
Example: Supply voltage is 460-3-60.
CSA
FLA
—
—
—
—
—
—
—
—
—
—
Canadian Standards Association
Full Load Amps
AB = 452 v
BC = 464 v
AC = 455 v
HACR
LRA
MCA
MOCP
NEC
OFM
RLA
UL
Heating, Air Conditioning and Refrigeration
Locked Rotor Amps
452 + 464 + 455
Minimum Circuit Amps
Average Voltage =
=
3
Maximum Overcurrent Protection
National Electrical Code (U.S.A. Standard)
Outdoor (Condenser) Fan Motor
Rated Load Amps
1371
3
= 457
Underwriters’ Laboratories
(AB) 457 - 452 = 5 v
(BC) 464 - 457 = 7 v
(AC) 457 - 455 = 2 v
Maximum deviation is 7 v.
Determine percent voltage imbalance
7
% Voltage Imbalance = 100 x
457
= 1.53%
NOTES:
1. In compliance with NEC requirements for multimotor and combina-
tion load equipment (refer to NEC Articles 430 and 440), the over-
current protective device for the unit shall be fuse or HACR breaker.
2. Unbalanced 3-Phase Supply Voltage
This amount of phase imbalance is satisfactory as it is below the maxi-
mum allowable 2%.
IMPORTANT: If the supply voltage phase imbalance is more than 2%,
contact your local electric utility company immediately.
Never operate a motor where a phase imbalance in supply voltage is
greater than 2%. Use the following formula to determine the percent
voltage imbalance.
3. The 575-v units are CSA only.
4. The 380-v units are not UL or CSA listed.
max voltage deviation from average voltage
= 100 x
average voltage
—8—
PRE-START-UP
WARNING: Failure to observe the following warn-
ings could result in serious personal injury:
1. Follow recognized safety practices and wear pro-
tective goggles when checking or servicing refrig-
erant system.
2. Do not operate compressor or provide any electric
power to unit unless compressor terminal cover is
in place and secured.
3. Do not remove compressor terminal cover until all
electrical sources have been disconnected.
4. If refrigerant leak is suspected around compres-
sor terminals, recover refrigerant whenever pos-
sible and relieve all pressure from system before
touching or disturbing anything inside terminal box.
5. Never attempt to repair soldered connection while
refrigerant system is under pressure.
6. Do not use torch to remove any component. Sys-
tem contains oil and refrigerant under pressure.
To remove a component, wear protective goggles
and proceed as follows:
Fig. 8 — Field Control Wiring Raceway
(576B Unit Shown)
a. Shut off electrical power to unit.
b. Recover refrigerant. Relieve all pressure from
system.
Table 5 — American/European Wire Conversions
c. Cut component-connecting tubing with tubing
cutter and remove component from unit.
AMERICAN
EUROPEAN
American
Conversion
(mm2)
Industry
Standard
Size (mm2)
Industry
d. Carefully unsweat remaining tubing stubs when
necessary. Oil can ignite when exposed to torch
flame.
Standard Size
18 AWG
16 AWG
14 AWG
12 AWG
10 AWG
8 AWG
0.82
1.30
1.0
1.5
2.08
2.5
Proceed as follows to inspect and prepare the unit for initial
start-up:
3.30
4.0
5.25
6.0
6.36
10.0
16.0
25.0
—
1. Field electrical power source must agree with unit name-
plate rating.
6 AWG
13.29
21.14
26.65
33.61
42.39
53.49
67.42
85.00
107.19
4 AWG
3 AWG
2. Check voltage imbalance as shown in Table 4, Note 2.
2 AWG
35.0
50.0
—
70.0
95.0
120.0
1 AWG
3. Check that all internal wiring connections are tight and
that all barriers, covers, and panels are in place.
1/0 AWG
2/0 AWG
3/0 AWG
4/0 AWG
4. Ensure all service valves are open. On 576B units, be
sure all compressor service valves are backseated.
250 kcmil
300 kcmil
350 kcmil
400 kcmil
500 kcmil
600 kcmil
126.64
151.97
177.90
202.63
253.29
303.95
150.0
—
185.0
240.0
300.0
—
5. Verify that compressor holddown bolts have been loos-
ened and that flat/snubber washers can be rotated by
applying finger pressure (snug, but not tight).
6. On 569C and 576B units, verify compressor crankcase
heater is securely in place. Crankcase heater must op-
erate for a least 24 hours before start-up.
LEGEND
AWG
kcmil
—
—
American Wire Gage
Thousand Circular Mils
7. Note that compressor oil level is visible in the sight
glass (576B units only).
VI. ACCESSORY INSTALLATION
8. Check for leaks in refrigerant system by using soap
bubbles and/or electronic leak detector.
At this time any required accessories should be installed on
the unit. Refer to Table 6 for available accessories. Control
wiring information is provided in the unit wiring book.
9. Check that liquid line solenoid valve is located at evapo-
rator coil as shown in Filter Drier and Moisture Indi-
cator section, page 6.
Table 6 — Accessory List
ACCESSORY
10. Check that both outdoor and indoor units are properly
mounted in accordance with installation instructions
and applicable codes.
Gage Panel
Winter-Start Relay Package
Weatherprobe™ II Low Ambient Kit
Hail Guard Package (072)
Hail Guard Package (090,102,120)
Thermostats
Subbase
—9—
START-UP
Terminals G and C) will also open, allowing the system to
function in cooling. As cooling demand is satisfied, the ther-
mostat contacts break, deenergizing the contactor causing the
system to shut off. The liquid line solenoid (LLS) valve closes,
minimizing the potential for refrigerant migration at this time.
The compressor does not restart until the thermostat again
calls for cooling. If a demand for cooling occurs within 5 min-
utes after the thermostat is satisfied, the system will not re-
start due to the feature of Time Guard II device. After the
5-minute time period, the system will restart as normal upon
thermostat demand.
I. START-UP AND ADJUSTMENTS
CAUTION: Complete the required procedures given
in the Pre-Start-Up section before starting the unit.
Do not jumper any safety devices when operating the
unit.
Do not operate the compressor when the outdoor tem-
perature is below 25 F (Ϫ4 C) (unless accessory low am-
bient kit is installed).
A. Checking Cooling Control Operation
The system is protected with a Cycle-LOC device so that the
compressor will not start if a high-pressure or low-pressure
fault occurs. To reset the Cycle-LOC device, set the thermo-
stat to eliminate the cooling demand then return to the origi-
nal set point. This should be done only once, and if system
shuts down due to the same fault, determine the problem be-
fore attempting to reset the Cycle-LOC device.
Start and check the unit for proper cooling control operation
as follows:
1. Place room thermostat SYSTEM switch in OFF posi-
tion. Observe that blower motor starts when FAN switch
is placed in ON position and shuts down when FAN switch
is placed in AUTO. position.
The crankcase heaters must be energized for a minimum of
24 hours before starting a 569C and 576B unit.
2. Place SYSTEM switch in COOL position and FAN switch
in AUTO. position. Set cooling control below room tem-
perature. Observe that compressor and condenser- and
evaporator-fan motors start. Observe that cooling cycle
shuts down when control setting is satisfied.
D. Oil Charge
576B Units
Allow unit to run for about 20 minutes. Stop unit and check
compressor oil level. Add oil only if necessary to bring oil into
view in sight glass. Use only approved compressor oil.
B. Unit Controls
All units have the following internal-protection controls:
Compressor Overload
Approved oils are:
This overload interrupts power to the compressor when
either the current or internal motor winding temperature be-
come excessive, and automatically resets when the internal
temperature drops to a safe level. This overload may require
up to 60 minutes (or longer) to reset. If the internal overload
is suspected of being open, disconnect the electrical power to
the unit and check the circuit through the overload with an
ohmmeter or continuity tester.
Suniso 3GS
WF32-150
If oil is added, run unit for an additional 10 minutes. Stop
unit and check oil level. If level is still low, add oil only after
determining that piping system is designed for proper oil re-
turn and that system is not leaking oil.
569C Units
The 569C units do not have a sight glass and are factory charged
with the correct amount of oil.
Time Guard II Device
The unit is equipped with accessory Time Guard II recycle
timer. The device will cause a 5-minute delay between com-
pressor starts.
All Units
Do not reuse drained oil or use any oil that has been exposed
to the atmosphere. Procedures for adding or removing oil are
given in the Standard Service Techniques Manual, Chapter 1,
Refrigerants.
Cycle-LOC™ Device
When high-pressure or low-pressure fault occurs, the Cycle-
LOC device will protect the system by not allowing the com-
pressor to start.
Low-Pressure/ Loss of Charge Switch (LPS)
When the liquid line pressure drops below 7 psig (48 kPa),
the LPS opens 24-v power to the compressor contactor and
stops the compressor. When the pressure reaches 22 psig
(152 kPa), the switch resets and the compressor is allowed to
restart.
CARE AND MAINTENANCE
To ensure continuing high performance and to minimize the
possibility of premature equipment failure, periodic mainte-
nance must be performed on this equipment. This cooling unit
should be inspected at least once each year by a qualified serv-
ice person.
High-Pressure Switch (HPS)
When the refrigerant high-side pressure reaches 426 psig
(2937 kPa), the HPS opens 24-v power to the compressor con-
tactor and stops the compressor. When the pressure drops to
320 psig (2206 kPa), the switch resets and the compressor is
allowed to restart.
NOTE TO EQUIPMENT OWNER: Consult your local dealer
about the availability of a maintenance contract.
WARNING: The ability to properly perform mainte-
nance on this equipment requires certain expertise,
mechanical skills, tools, and equipment. If you do not
possess these, do not attempt to perform any mainte-
nance on this equipment other than those procedures
recommended in the User’s Manual. FAILURE TO HEED
THIS WARNING COULD RESULT IN SERIOUS PER-
SONAL INJ URY AND POSSIBLE DAMAGE TO THIS
EQUIPMENT.
C. Sequence of Operation
At start-up, the thermostat calls for cooling. When all safety
devices are satisfied, the compressor contactor (fan con-
tactor) will energize causing the compressor and outdoor (con-
denser) fan motor to operate. Terminal ЉGЉ at the thermostat
is also energized, allowing the field-supplied and -installed
(24v) indoor (evaporator) fan contactor to function. A field-
supplied and -installed liquid line valve (connected between
—10—
SERVICE
WARNING: When servicing unit, shut off all electri-
cal power to unit to avoid shock hazard or injury from
rotating parts.
I. CLEANING
Inspect unit interior at the beginning of each cooling season
and as operating conditions require.
A. Condenser Coil
Inspect coil monthly. Clean condenser coil annually, and as
required by location and outdoor-air conditions.
Clean coil as follows:
1. Turn off unit power.
Fig. 10 — Propping Up Top Panel
2. Remove and save top panel screws on condensing unit.
3. Remove condenser coil corner post. See Fig. 9. To hold
top panel open, place coil corner post between top panel
and side panel. See Fig. 10.
4. Remove bracket holding coil sections together at return
end of condenser coil. Carefully separate the outer coil
section 3 to 4 in. (75 to 100 mm) from the inner coil sec-
tion. See Fig. 11.
5. Use a water hose or other suitable equipment to flush
down between the 2 coil sections to remove dirt and
debris. Clean the outer surfaces with a stiff brush in the
normal manner.
6. Reposition the outer coil section, attach the bracket re-
moved in Step 4, and remove the coil corner post from
between the top panel and side panel. Secure the sec-
tions together. Install the coil corner post and replace
all screws (removed in Step 2).
II. LUBRICATION
A. Compressors
Fig. 11 — Separating Coil Sections
Each compressor is charged with the correct amount of oil at
the factory. Refer to the Oil Charge section on page 10 for ad-
ditional information.
III. CONDENSER-FAN ADJUSTMENT (Fig. 12)
1. Shut off unit power supply.
2. Remove condenser-fan assembly (grille, motor, motor cover,
and fan).
B. Fan Motor Bearings
Fan motor bearings are of the permanently-lubricated type.
No further lubrication is required.
3. Loosen fan hub setscrews.
4. Adjust fan height as shown in Fig. 12.
5. Tighten set screws.
6. Replace condenser-fan assembly.
NOTE: Fan height adjustments are as follows:
Fig. 9 — Cleaning Condenser Coil
UNIT
in.
mm
569C072
4.50
114
All Units
(except 569C072)
6.42
163
Fig. 12 — Outdoor (Condenser) Fan Adjustment
—11—
IV. CAPACITY CONTROL (576B120 Only)
8. Clean system. Add new liquid line filter drier.
9. Install new compressor in unit.
A suction pressure-actuated unloader controls 2 cylinders and
provides capacity control. Unloaders are factory set (see
Table 1A or 1B), but may be field adjusted:
10. Connect suction and discharge lines to compressor. En-
sure that compressor holddown bolts are in place.
11. Connect wiring.
12. Install crankcase heater.
13. Evacuate and recharge unit, per Step VII.
14. Restore unit power.
A. Control Set Point
The control set point (cylinder load point) is adjustable from
0 to 85 psig (586 kPa). To adjust, turn control set point ad-
justment nut (Fig. 13) clockwise to its bottom stop. In this
position, set point is 85 psig (586 kPa). Then, turn adjust-
ment counterclockwise to desired control set point. Every full
turn counterclockwise decreases set point by 7.5 psig (51.7 kPa).
VI. CRANKCASE HEATER (Except 569C072)
The crankcase heater prevents refrigerant migration and com-
pressor oil dilution during shutdown when compressor is not
operating.
B. Pressure Differential
The pressure differential (difference between cylinder load and
unload points) is adjustable from 6 to 22 psig (41.4 to 152 kPa).
To adjust, turn pressure differential adjustment screw (Fig. 13)
counterclockwise to its back stop position. In this position,
differential is 6 psig (41.4 kPa). Then, turn adjustment screw
clockwise to desired pressure differential. Every full turn clock-
wise increases differential by 1.5 psig (10.3 kPa).
Close both compressor service valves if applicable when crank-
case heater is deenergized for more than 6 hours.
VII. REFRIGERANT CHARGE
Unit panels must be in place when unit is operating during
charging procedure. Unit is shipped with a holding charge
only. Weigh in 7 lbs (3 kg) of R-22 to start unit. Refer to GTAC II,
Module 5, Charging, Recovery, Recycling, and Reclamation
for additional information.
See Troubleshooting Guide on page 14 for additional
information.
A. Low Charge Cooling
Using Cooling Charging Charts, Fig. 14 and 15, vary refrig-
erant until the conditions of the appropriate chart are met.
Note the charging charts are different from type normally used.
The charts are based on charging the units to the correct sub-
cooling for the various operating conditions. Accurate pres-
sure gage and temperature sensing device are required. Con-
nect the pressure gage to the service port on the liquid line
service valve. Mount the temperature sensing device on the
liquid line, close the liquid line service valve, and insulate it
so that outdoor ambient temperature does not affect the read-
ing. Indoor-air cfm must be within the normal operating range
of the unit.
Operate unit a minimum of 15 minutes. Ensure that tem-
perature and pressure have stabilized. Plot liquid pressure
and temperature on chart and add or reduce charge as re-
quired. Do not vent refrigerant to the atmosphere. Recover
any excess charge. Operate the unit until the system stabi-
lizes. Adjust charge to conform with charging chart, using liq-
uid pressure and temperature to read chart.
Fig. 13 — Compressor Capacity Control Unloader
B. Refrigerant Leaks
V. COMPRESSOR REMOVAL
Proceed as follows to repair a refrigerant leak and to charge
the unit:
1. Locate the leak and ensure that refrigerant system pres-
sure has been relieved.
See Tables 1A and 1B for compressor information.
Follow safety codes and wear safety glasses and work gloves.
1. Shut off power to unit. Remove unit access panel (front
of unit).
2. Repair leak following accepted practices.
2. Remove refrigerant from system using refrigerant re-
moval methods described in GTAC II, Module 5, Charg-
ing, Recovery, Recycling, and Reclamation.
3. Disconnect compressor wiring at compressor terminal
box.
NOTE: Install a new filter drier in the liquid line whenever
the system has been opened for repair.
3. Add a small charge of R-22 refrigerant vapor to system
and leak-test unit.
4. Evacuate refrigerant system if additional leaks are not
found.
4. Remove bolts from suction flange and discharge serv-
ice valve (576B Units).
5. Charge unit with R-22 refrigerant.
CAUTION: Excessive movement of copper lines at
compressor may cause higher levels of vibration when
unit is restored to service.
NOTE: Do not vent refrigerant to the atmosphere. Recover
any excess charge.
5. Remove crankcase heater from compressor base (576B
units only).
VIII. REFRIGERANT SERVICE PORTS
Each unit has 3 service ports: one on the suction line, one on
the liquid line, and one on the compressor discharge line. Be
sure caps on the ports are tight.
6. Remove compressor holddown bolts.
7. Remove compressor from unit.
—12—
Fig. 15 — Cooling Charging Chart — 569C090,120
and 576B090,102,120
Fig. 14 — Cooling Charging Chart — 569C072
—13—
TROUBLESHOOTING GUIDE
CAUSE
SYMPTOM
REMEDY
Compressor does not run —
Contactor open
Power off.
Restore power.
Fuses blown.
Replace with correct fuses after finding cause
and correcting.
Transformer open/shorted.
Replace transformer if primary windings are
receiving power and no output.
Thermostat circuit open.
Check thermostat setting.
Low-pressure switch open.
Check for refrigerant undercharge or system
leak.
High-pressure switch open.
Check for refrigerant over charge or
obstruction of outdoor airflow.
Connections loose.
Tighten all connections.
Compressor motor thermostat open.
Compressor leads loose, broken.
Single phasing.
Check for excessive motor temperature.
Check connections with power off.
Replace blown fuse.
Compressor does not run —
Contactor closed
Compressor internal overload open.
Allow compressor motor windings to cool down to reset
overload. Determine cause for overload opening.
Compressor cycles on high-
pressure switch —
Condenser fan on
High-pressure switch faulty.
Airflow restricted. Dirty coil.
Air recirculating.
Replace switch.
Remove obstruction, clean condenser coil.
Clear airflow area.
Noncondensables in system.
Recover, evacuate and recharge as required. Refer to
Carrier GTAC-II, Module 5, Charging, Recovery,
Recycling, and Reclamation.
Refrigerant overcharge.
Recover as required.
Refrigerant system restrictions.
Check or replace filter drier, expansion
valve, etc.
Compressor cycles on high-
pressure switch —
Condenser fan off
Fan slips on shaft.
Motor not running.
Tighten fan hub screws.
1
3
Check power and capacitor
Replace motor.
⁄
3
and
⁄4
hp motor.
Motor bearings seized.
Motor overload open.
Check overload rating. Check for
fan blade obstruction.
Motor burned out, windings open.
Filter drier plugged.
Replace motor.
Compressor cycles on low-
pressure switch —
Evaporator fan running
Replace filter drier.
Replace power head.
Expansion valve power head
defective.
Low refrigerant charge.
Expansion valve restricted/plugged.
Evaporator coil iced up.
Evaporator coil dirty.
Find leak, repair, evacuate system, and recharge.
Remove and replace expansion valve.
Check refrigerant charge.
Clean coil fins.
Airflow restricted —
Low suction pressure
Indoor-air filter dirty.
Clean or replace filters.
Check damper operation and position.
Tighten all connections.
Replace relay.
Indoor-air dampers closed.
Electrical connections loose.
Fan relay defective.
Indoor (evaporator) fan stopped —
Low suction pressure
Motor overload open.
Motor defective.
Check power supply.
Replace motor.
Fan belt broken or slipping.
Refrigerant charge low.
Head pressure low.
Replace or tighten belt.
Add charge.
Compressor runs but
cooling insufficient —
Suction pressure low
Check refrigerant charge.
Clean or replace filters.
Replace power head.
Indoor-air filters dirty.
Expansion valve power head
defective.
Expansion valve restricted/plugged.
Evaporator coil partially iced.
Evaporator airflow restricted.
Heat load excessive.
Remove and replace expansion valve.
Check low-pressure setting.
Remove obstruction.
Compressor runs but
cooling insufficient —
Suction pressure high
Check for open doors or windows.
NOTE: See Fig. 16 and 17 for component arrangements.
—14—
LEGEND FOR FIG. 16 AND 17
C
—
—
—
—
—
—
—
—
—
—
Contactor, Compressor
Capacitor
LPS
NEC
OFC
OFM
OL
QT
TB
TDR
TRAN
—
—
—
—
—
—
—
—
—
Low-Pressure Switch
National Electrical Code
Outdoor (Condenser) Fan Contactor
Outdoor (Condenser) Fan Motor
Overload Relay
Quadruple Terminal
Terminal Block
Time-Delay Relay
Terminal (Marked)
CAP
CB
Terminal (Unmarked)
Circuit Breaker
CH
Crankcase Heater
Compressor Lockout
Compressor Motor
Compressor Temperature Protection
Equipment
Ground
High-Pressure Switch
Terminal Block
CLO
COMP
COTP
EQUIP
GND
HPS
Factory Wiring
Field Power Wiring
Transformer
Fig. 16 — Typical 569C Wiring Schematic and Component Arrangement
Fig. 17 — Typical 576B Wiring Schematic and Component Arrangement
—15—
Copyright 1999 Bryant Heating & Cooling Systems
CATALOG NO. 5356-902
START-UP CHECKLIST
I. PRELIMINARY INFORMATION
OUTDOOR: MODEL NO.
SERIAL NO.
INDOOR: AIR HANDLER MANUFACTURER
MODEL NO.
SERIAL NO.
ADDITIONAL ACCESSORIES
II. PRE-START-UP
OUTDOOR UNIT
IS THERE ANY SHIPPING DAMAGE?
IF SO, WHERE:
(Y/N)
WILL THIS DAMAGE PREVENT UNIT START-UP?
(Y/N)
CHECK POWER SUPPLY. DOES IT AGREE WITH UNIT?
HAS THE GROUND WIRE BEEN CONNECTED? (Y/N)
(Y/N)
HAS THE CIRCUIT PROTECTION BEEN SIZED AND INSTALLED PROPERLY?
ARE THE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY?
(Y/N)
(Y/N)
HAVE COMPRESSOR HOLDDOWN BOLTS BEEN LOOSENED (Snubber washers are snug, but not tight)?
(Y/N)
CONTROLS
ARE THERMOSTAT AND INDOOR-FAN CONTROL WIRING
CONNECTIONS MADE AND CHECKED?
(Y/N)
ARE ALL WIRING TERMINALS (including main power supply) TIGHT?
HAS CRANKCASE HEATER BEEN ENERGIZED FOR 24 HOURS?
(Y/N)
(Y/N)
INDOOR UNIT
HAS WATER BEEN PLACED IN DRAIN PAN TO CONFIRM PROPER DRAINAGE?
ARE PROPER AIR FILTERS IN PLACE? (Y/N)
HAVE FAN AND MOTOR PULLEYS BEEN CHECKED FOR PROPER ALIGNMENT?
(Y/N)
(Y/N)
DO THE FAN BELTS HAVE PROPER TENSION?
(Y/N)
HAS CORRECT FAN ROTATION BEEN CONFIRMED?
(Y/N)
PIPING
IS LIQUID LINE SOLENOID VALVE LOCATED AT THE EVAPORATOR COIL AS REQUIRED?
HAVE LEAK CHECKS BEEN MADE AT COMPRESSOR, CONDENSER, EVAPORATOR,
(Y/N)
TXVs (Thermostatic Expansion Valves), SOLENOID VALVES, FILTER DRIERS, AND FUSIBLE PLUGS
WITH A LEAK DETECTOR? (Y/N)
LOCATE, REPAIR, AND REPORT ANY LEAKS.
ARE ALL 576B COMPRESSOR SERVICE VALVES FULLY OPENED (BACKSEATED)?
(Y/N)
HAVE LIQUID LINE SERVICE VALVE AND SUCTION LINE SERVICE VALVE BEEN OPENED?
(Y/N)
IS THE OIL LEVEL IN COMPRESSOR CRANKCASE ON 576B UNIT IN VIEW IN THE COMPRESSOR SIGHT GLASS?
(Y/N)
CHECK VOLTAGE IMBALANCE
LINE-TO-LINE VOLTS:
(AB + AC + BC)/3 = AVERAGE VOLTAGE =
MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =
AB
V
AC
V
BC
V
V
V
VOLTAGE IMBALANCE = 100 X (MAX DEVIATION)/(AVERAGE VOLTAGE) =
%
IF OVER 2% VOLTAGE IMBALANCE, DO NOT ATTEMPT TO START SYSTEM!
CALL LOCAL POWER COMPANY FOR ASSISTANCE.
—CL-1—
III. START-UP
CHECK EVAPORATOR-FAN SPEED AND RECORD.
CHECK CONDENSER-FAN SPEED AND RECORD.
AFTER AT LEAST 15 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEASUREMENTS:
OIL PRESSURE (576B only)
SUCTION PRESSURE
SUCTION LINE TEMP
DISCHARGE PRESSURE
DISCHARGE LINE TEMP
ENTERING CONDENSER-AIR TEMP
LEAVING CONDENSER-AIR TEMP
EVAP ENTERING-AIR DB (dry bulb) TEMP
EVAP ENTERING-AIR WB (wet bulb) TEMP
EVAP LEAVING-AIR DB TEMP
EVAP LEAVING-AIR WB TEMP
COMPRESSOR AMPS (L1/L2/L3)
/
/
HAS REFRIGERANT CHARGE BEEN ADJUSTED PER UNIT CHARGING CHART?
NOTES:
Copyright 1999 Bryant Heating & Cooling Systems
CATALOG NO. 5356-902
—CL-2—
|