Page 1
Air-Cooled Condenser Units
Installation, Start-Up and
Service Instructions
09BY006-024
5to20Tons
CONTENTS
SAFETY CONSIDERATIONS .................1
GENERAL ..................................1
INSTALLATION ............................1-12
Step 1 − Complete Pre-Installation Checks ..1
Step 2 − Rig and Place Unit ................7
• RIGGING
• PLACING THE UNIT
• VIBRATION ISOLATION
• POSITIONING THE 09BY UNIT
• VERTICAL DISCHARGE
Step 3 − Install Accessory Low-Ambient Kit or
Inlet Filter Kit (If Required) ................8
Step 4 − Install Rain Drain .................8
Step 5 − Complete Refrigerant Piping .......8
• GENERAL
• REFRIGERANT LINE SIZING
• PRESSURE RELIEF
• REFRIGERANT RECEIVER
• LIQUID LIFT
• SWEAT CONNECTIONS
• FIELD PIPING
• MANIFOLDING CIRCUITS
• CHECK VALVE
• SERVICE VALVES
Step 6 − Ductwork ........................10
• CONDENSER AIR DUCT INSULATION
Step 7 − Insulate the Unit .................11
Step 8 − Complete Electrical Connections ..11
• GENERAL
• MAIN POWER WIRING
• CONTROL CIRCUIT POWER WIRING
• GENERAL WIRING NOTES
START-UP .................................13
System Evacuation and Dehydration ........13
Charging Procedure .......................13
Check Operation of Condenser Fan Motor
Controls and Rotation of Fans ...........13
Adjust Fan Speed .........................13
SERVICE .................................13-15
Cleaning Condenser Coils .................13
Lubrication ................................13
Condenser Fan Adjustment ................13
• TO CHANGE FAN SPEED
• PULLEY ALIGNMENT
• BELT TENSION ADJUSTMENT
• TO CHANGE FAN WHEEL
• TO REPLACE FAN BEARING
MAINTENANCE ............................15
Cleaning ..................................15
Inspection .................................15
Air Filters .................................15
Condensate Drain .........................15
TROUBLESHOOTING ......................16
START-UP CHECKLIST ................CL-1,CL-2
Page
SAFETY CONSIDERATIONS
Installing, startingup,and servicing air-conditioning equipment can be hazardous due to system pressures, electrical
components, and equipment location.
Only trained, qualified installers and service mechanics
should install, start-up, and service this 09BY equipment
(Fig. 1).
When working on the equipment, observe precautions in
the literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glassesand workgloves.
Keep quenching cloth and fire extinguisher nearby when brazing. Use care in handling, rigging, and setting bulky
equipment.
ELECTRIC SHOCK HAZARD
Separate power sources (main and control
power circuits) are used for these units. Be
sure both main and control power circuits are
disconnected before servicing.
GENERAL
The 09BY air-cooledcondenser is a remote air-cooled condenser designed to be used with the 50BZ vertical packaged
units. See Table 1. Airflow is horizontal, both into and out
from the same face of the unit. The unit is designed to be
mounted indoors in a window, through the wall in high-rise
buildings, or on the wall on the building exterior. See Fig. 2
for typical applications. Ductwork is not needed, but may be
added easily if required by the application. Airflow is provided by centrifugal fans with an adjustable belt drive to meet
varying static requirements. Units may also be matched with
other compressor and evaporator combinations. Contact your
local representative for more details.
Check space requirements, service clearances, floor strength,
location of piping, size of power supply,and location of ductwork (if used) before installing. See Fig. 3 for unit dimensions and Table 2 for unit operating weights.
INSTALLATION
Step 1 — Complete Pre-Installation Checks —
Examine unit for damage incurred during shipment. File claim
immediately with transit company if damage is found. Check
the shipment for completeness. Verify that the nameplate electrical requirements match the available power supply.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 4
Tab 4a 4a
PC 111 Catalog No. 530-969 Printed in U.S.A. Form 09BY-2SI Pg 1 9-96 Replaces: 09BY-1SI
Page 2
Fig. 1 — 09BY Unit (008-014 Shown)
2
Page 3
09BY
HANGER
RODS
DISCHARGE
DUCT
INLET
DUCT
TO OUTSIDE
TO RAIN DRAIN
(REQUIRED IF RAIN
WILL ENTER UNIT)
TO REFRIGERANT
PIPING COMPRESSOR/
EVAPORATOR UNIT
INSULATE IF THROUGH
CONDITIONED SPACE
09BY IN REMOTE APPLICATION WITH DUCTWORK
(Shown Suspended from Ceiling)
OUTSIDE
WALL
OUT
WALL
LOUVERS
50BZ
POWER
CONNECTION
09BY
(FIELD
SUPPLIED)
IN
LEGEND
Refrigerant Connection
Field-Supplied Refrigerant Piping
*Field-Supplied Floor Stand (Height to Match Wall Opening).
Fig. 2 — Mounting Applications
HEIGHT AS
REQUIRED
FOR WINDOW
OR WALL
OPENING
FLOOR
STAND*
TO RAIN
DRAIN
(REQUIRED
IF RAIN WILL
ENTER UNIT)
09BY DIRECT CONNECTION TO 50BZ UNIT
3
Page 4
09BY DIMENSIONS (English)
09BY DIMENSIONS (SI)
DIMENSION
A 2-11
B 1- 7
006
(Ft-in.)
008
(Ft-in.)
1
⁄23- 613⁄163- 613⁄163- 613⁄165- 0
11
⁄161-115⁄81-115⁄81-115⁄82- 97⁄
012
(Ft-in.)
014
(Ft-in.)
C 4- 07⁄164- 8 5- 31⁄25-11 7- 69⁄
D 1-111⁄42- 39⁄162- 39⁄162- 39⁄162-11
E 0-11
1
⁄81- 2 1- 2 1- 2 1- 73⁄
F 0- 63⁄160- 57⁄80- 711⁄160-117⁄161-1111⁄
G 1- 15⁄161- 35⁄81- 47⁄81- 47⁄82- 0
H 0- 9
5
⁄160-11 0-11 0-11 1- 31⁄
J 0- 3 0- 3 0- 3 0- 3 0- 27⁄
K 3- 51⁄84- 01⁄44- 75⁄85- 31⁄47- 01⁄
L 1-105⁄82- 3 2- 3 2- 3 2- 9
M 0- 1
9
⁄160- 19⁄160- 19⁄160- 19⁄160- 31⁄
N 0- 6 0- 7 0- 7 0- 7 0-10
P 2- 5 2- 9 3- 2 3- 7 4- 6
R 1- 2 1- 5 1- 5 1- 5 2- 0
016,024
(Ft-in.)
16
16
4
2
16
4
8
DIMENSION
006
(mm)
008
(mm)
012
(mm)
014
(mm)
016,024
(mm)
A 902 1087 1087 1087 1526
B 500 600 600 600 850
C 1231 1422 1613 1804 2300
D 590 701 701 701 911
E 282 357 357 357 502
16
F 156 150 195 290 347
G 338 396 428 428 610
H 236 280 318 318 394
J 76 76 76 76 63
K 1044 1226 1413 1607 2140
L 575 686 686 686 838
M 40 40 40 40 80
N 152 178 178 178 254
P 737 838 965 1092 1372
R 356 432 432 432 610
Fig. 3 — Base Unit Dimensions
4
Page 5
CORNER WEIGHTS (Lb)
UNIT
SIZE
006 55 73 59 42
008 61 89 73 44
012 86 114 93 64
014 107 142 114 78
016 123 159 127 91
024 132 195 158 95
ABCD
NOTES:
1. Operational clearances are 0 in. on all sides of the unit.
2. Service clearances are 0 in. (minimum) on the top, rear,and front
of the unit. A minimum of 3 ft service clearance is required on the
unit right side, anda3ftclearance is recommended on the left
side (2 ft is the minimum). One side of the unit (either right, left, or
rear) should have the following minimum clearance for removal of
the blower shaft:
Fig. 3 — Base Unit Dimensions (cont)
UNIT
SIZE
006 41.0
008 47.0
012 51.0
014 51.0
016 55.5
024 73.0
APPROX. SHAFT LENGTH
(in.)
5
Page 6
Table 1 — Condenser Unit Application
UNIT
50BZ
006 008 012 014 016 024
09BY
006 S
008 S
012 OS
014 OS
016 OS
024 OS
LEGEND
S—Standard
O—Optional
NOTE: Contact your local representative for use with reciprocating air-cooled chillers and other compressor-bearing unit combinations.
Table 2 — Physical Data
UNIT 09BY 006 008 012 014 016 024
NOMINAL TONS 57
OPERATING WEIGHT (Lb) 267 357 441 471 837 970
REFRIGERANT R-22
Number of Circuits 11222 3
Minimum Charge (Lb/Ckt) 6 11 6 6/11 11 11
Optimum Charge (Lb/Ckt) 8.38 14.5 8.38 8.38/14.5 14.5 14.5
Storage Volume Ft
Holding Charge Nitrogen Charge
CONDENSER FAN Belt Drive, Centrifutal
Nominal Airflow (Cfm) 3000 4500 6000 7200 9000 12,000
Cfm Range 2000-4500 3400-6400 4500-7000 6000-7600 6700-9750 7500-11,000
Quantity 22222 2
Size (in.) 8.8 × 8.8 11.0 × 11.0 11.0 × 11.0 11.0 × 11.0 12.4 × 12.4 14.0 × 14.0
Pulley Size (in.) 5
Motor Pulley Range (in.) 43⁄16-51⁄
Rpm Range 1365-1566 960-1260 1106-1455 1045-1306 840-1050 686-847
Maximum Fan Rpm 1705 1365 1365 1365 1210 955
Belt Quantity...Size 1...A41 1...B46 1...B45 2...A45 2...B88 3...B90
Pulley Center Line Distance (in.) 11.2/12.6 13.6/15.0 13.6/15.0 13.6/15.0 32.6/33.8 30.0/30.7
Fan Shaft (mm)* 20 25 25 25 25 30
Motor Shaft (in.)
Motor Hp...Type 2...TEFC† 3...TEFC 3...TEFC 5...TEFC 5...TEFC 10...TEFC
Motor Frame Size 145T 182T 182T 184T 184T 215T
Maximum Motor Hp 3555510
CONDENSER COIL
Rows...Fins per in. 4...14 5...14 5...14 5...14 4...15 5...15
Face Area (sq ft) 6.33 8.75 10.12 11.45 19.38 19.38
CONNECTIONS
Hot Gas
Quantity 11222 3
Size (in.)
Liquid Line
Quantity 11222 3
Size (in.)
Condensate Drain (in.)
3
/Ckt) 0.31 0.47 0.31 0.31/0.47 0.47 0.47
11
⁄
16
2
7
⁄
8
1
⁄
2
1
⁄
2
CONTROLS 24-V Control Fan Contactor Provided in Unit
*Metric size.
†TEFC — Totally Enclosed Fan Cooled.
NOTE: Optimum charge is based on 15° F subcooling. Minimum charge is based on 5° F subcooling.
1
⁄
2
75⁄
8
43⁄16-51⁄
2
11⁄
8
3
⁄8-in. OD Enhanced Copper Tube, Aluminum Fin
1
⁄
2
1
⁄
2
10 12 15 20
65⁄
8
4-5 4-5 43⁄4-6 53⁄8-65⁄
11⁄
8
1
⁄
2
1
⁄
2
3
⁄4FPT
611⁄
11⁄
1
⁄
2
1
⁄
2
16
8
10 1311⁄
11⁄
8
1
⁄
2
1
⁄
2
13⁄
16
8
8
1
⁄
2
1
⁄
2
6
Page 7
Step 2 — Rig and Place Unit
RIGGING — The 09BY units are mounted on skids. Leave
the unit on the skid until it is in the final position. While on
the skid, the unit can be rolled, dragged or forklifted; do not
apply force to the unit. Use a minimum of 3 rollers when
rolling, and raise from above to remove the skid when unit
is in the final position. See Fig. 4 for rigging details.
PLACING THE UNIT — Locate the condenser where an
adequate supply of outdoor air is available for the unit inlet.
NOTE: Unit inlet and discharge may both be ducted to the
outside.
Either provide inlet filters to protect the condenser coils,
or locate the condenser in an area free from airborne dirt or
other foreign material which could clog the coils. For multiple units, allow service clearance (Fig. 3) between units,
and locate unit discharges and inlets so that recirculation of
condenser air is prevented. Placement area must be level and
strong enough to support operating weight of the unit
(Table 2). Bolt unit securely in place when unit is positioned
and leveled. Fasteners for mounting unit are field supplied.
NOTE: It will be necessary to drill holes in the unit base or
side wall where bolts are to be mounted.
IMPORTANT: Use care if rain will enter the unit (if
unit is located fully or partially outdoors). DO NOT
drill through the unit drain pan or leaks will result.
POSITIONING THE 09BY UNIT — Refer to notes in
Fig. 3 for typical service clearances.
To suspend the unit, use 4, field-supplied,
1
⁄2-in. diameter
(or larger) threaded rods. Mount 2 heavy channels under the
entire width of the unit, allowing them to protrude beyond
the width of the unit so that supporting rods can be installed
on the channel ends. Attach minimum1⁄2-in. threaded supporting rods (field-supplied) to channels through a rubber or
spring isolator. See. Fig. 5.
DO NOT use rods smaller than1⁄2-in. diameter. Smaller
rods may not be strong enough to support the unit. Rods
must be securely anchored in ceiling joists.
Use a double hex nut when attaching hanger rods to brackets.Asingle nut could loosen from vibration of the unit. Pitch
unit approximately1⁄4-in. toward drainin bothdirections (lengthwise and widthwise) to aid in condensate and/or rain
removal.
Before sliding unit into final position, check for clearance
to access panels and service area to install piping.
VERTICALDISCHARGE — The 09BY units can be mounted
on a field-supplied stand as shown in Fig. 6 for vertical discharge. Also, provide a rain drain on the back of the unit.
VIBRATION ISOLATION — Units mounted in or above
occupied spaces should employ some type of vibration isolation. For units that are floor mounted, rubber pads may be
located under each unit corner or unit may be mounted on
rubber shear isolators or on spring isolators. Unit may be
supported by its 4 corners, or a field-supplied support rail
may be used for each side. Size isolators with the corner
weights shown in Fig. 3. Units may also be suspended from
above. See Positioning the 09BY Unit section below and
Fig. 5 for recommended support and isolator mounting.
Ductwork attached to the condenser should be isolated from
the unit with a flexible collar on the inlet and outlet ducts.
SPREADER BAR
09BY
UNIT
*Field supplied.
BRACKET*
DOUBLE HEX NUT*
FIELD SUPPLIED
1/2" THREADED
ROD*
Fig. 5 — Threaded Rod Installed in Bracket
PROTRUDING
CHANNEL END*
RUBBER
ISOLATOR*
WASHER*
SUPPORTS
UNDER SKID
Fig. 4 — Unit Rigging
Fig. 6 — 09BY Vertical Discharge
7
Page 8
Step 3 — Install Accessory Low-Ambient Kit or
Inlet Filter Kit (If Required) —
erated with inlet air to the condenser below 50 F, a lowambient damper may be required. The low-ambient kit controls head pressure by discharge dampers on the condenser
fan. The dampers are actuated by a refrigerant-operated piston connected to the discharge line of the condenser. If lowambient accessory will be used, install it at this time (before
final refrigerant and ductwork connections are made).
An accessory filter rack may also be installed on the condenser air inlet to help keep the coil clean. This filter rack
should be installed before the ductwork is attached to the
unit, and before unit is mounted against a wall louver (if
required in your specific application).
Refer to installation instructions provided with the accessories for installation details.
If the unit will be op-
Step 4 — Install Rain Drain (See Fig. 7)
IMPORTANT: A rain drain connection MUST BE
USED if any possibility exists of rain water entering
the unit.
The 09BY unit provides a choice of 2 drain locations. Rain
drain connection can be made on either side of the unit. Block
whichever drain is not being used, but DO NOT BLOCK
BOTH drain locations.
NOTE: Dimensions in [ ] are in millimeters.
Fig. 7 — Rain Drains
A drain kit is provided (shipped in the fan section). This
kit consists of PVC drain fittings to adapt to field-supplied
threaded pipe. Make connections through the unit side panel.
Some applications may require connection to either galvanized steel or copper drain pipe; consult local code requirements for details.
If unit is located inside the building, the drain connection
near the refrigerant piping can be used for external drainage.
Run drain connection to a trapped drain, and plug unused
connection.
IMPORTANT: NEVER use pipe smaller than
3
⁄4in.
in the drain run.
For vertical discharge units, provide a rain drain on the
back of the unit.
Pitch drain pipe downward at a slope of at least
1
⁄4-in. per
ft for proper drainage. Provide tees plugged on one side for
cleanouts. Leave clearance for servicing, and observe all local sanitary codes.
Refer to Carrier System Design Manual for additional pip-
ing details.
Step 5 — Complete Refrigerant Piping
GENERAL — All field leak and pressure testing should be
done in accordance with local code requirements. If a local
code does not exist, use ASHRAE (American Society of Heating, Refrigeration and Air Conditioning Engineers) Standard 15, Safety Code for Mechanical Refrigeration.
For leak testing procedures, refer to the Carrier ‘‘Refrig-
erant Service Techniques’’ book, Form SFT-01.
For any parts that need to be removed, use a mini tubing
cutter. Perform phos-copper brazing on all field-made connections while protecting adjacent joints from heat.
REFRIGERANT LINE SIZING — Sizing depends on length
of lines between various sections of the refrigerant system.
Consider the amount of liquid lift and drop in the system as
well as proper compressor oil return. Consult Carrier
System Design Manual, Part 3, or Carrier E20-IIt Refrigerant Piping Computer Program for proper piping sizes and
design.
PRESSURE RELIEF — The ASHRAE Standard 15, Safety
Code for Mechanical Refrigeration states: ‘‘Every refrigerating system shall be protected by a pressure relief device or
some other means designed to safely relieve pressure due to
fire or other abnormal conditions.’’ Since 09BY condensers
do not have pressure relief devices, one must be field supplied and installed either before the liquid line service valve
or inside the 09BY unit. Each circuit must have its own pressure relief.
If desired, the pressure relief requirement can also be satisfied by installing a fusible plug in the liquid line. To do so,
install a tee in the liquid line with a
tee side, and install a fusible plug (part no. EK02KK105 or
similar). The temperature rating of the fusible plug should
be between 205 F and 220 F (96 C and 104 C). If a service
valve is used on the liquid line, be sure that both the piping
system and the condenser are protected for relief if all service valves are closed. Note that if the condenser is located
indoors, requirements for venting the fusible plug to the outdoors may apply. Consult local code requirements.
REFRIGERANT RECEIVER —Arefrigerant receiver is not
furnished with 09BY condensers and is not recommended
for normal applications.
1
⁄4-in. NPT fitting on the
8
Page 9
LIQUID LIFT — Amount of liquid lift available before refrigerant flashing occurs depends on amount of liquid subcooling in the system.
All 09BY condensers have positive subcooling when applied with optimum charge. With subcooling, it is possible
to overcome an appreciable pressure drop and/or static head
pressure (due to elevation of the liquid metering device above
the condenser when condenser is below evaporator coil).
When 09BY condensers are applied with minimum charge,
they do not provide positive subcooling. If subcooling is required, it must be obtained by external means such as a liquid suction interchanger.
It is recommended that the evaporator be either at the same
level as the condenser or lower than the condenser when minimum is used.
SWEAT CONNECTIONS — Connections are made inside
the unit, and piping may enter from either side. For ease in
brazing, it is recommended that all internal solder joints be
made before unit is placed in its final position. See 50BZ (or
other compressor-bearing unit) base unit installation instructions for proper line sizing and piping procedures.
FIELD PIPING — For 09BY remote installation, select pipe
sizes according to length from Table 3.
Use refrigerant grade piping. If tubing size is other than
unit connection sizes, use adapter fittings.
Refer to 50BZ (or other compressor-bearing unit) base unit
installation instructions to determine refrigerant charge adjustment for remote and special piping applications.
NOTE: When installing 09BY units in systems, add charge
for other components (i.e., filter drier, moisture indicator, etc.)
to determine system charge quantity. Record charge.
MANIFOLDING CIRCUITS — The 09BY units with 2 or
3 circuits (012-024 units) may be manifolded together to be
used as a single-circuit condenser. See Fig. 8 for a typical
connection of a 2-circuit condenser for use on one circuit.
Three-circuit units (024) may be manifolded in any combination of 1, 2, or 3 circuits per compressor. When manifolding circuits, NEVER CONNECT TWO SEPARATE COMPRESSOR EVAPORATO RCIRCUITSTOGETHER ON THE
SAME CONDENSER CIRCUIT. Pipe sizes for the combined circuit should be no smaller than the sizes shown in
Table 3.
Fig.8—Typical 2-Circuit Condenser Manifolded
For Single-Circuit Use
Table 3 — Minimum Refrigerant Line Size Data
UNIT
09BY
006 1
008 1
012*
014*
016*
024*
*Circuits may be manifolded to a single compressor. Multiple con-
denser circuits should be on the same evaporator. See Manifolding
Circuits section on this page for details.
NOTES:
1. A standard number of elbows and fittings have been considered
insizing piping (approximately 20% loss).Special applications may
require different minimum refrigerant line sizes. Contact your local
representative for assistance as required.
0TO15FT 16TO25FT 26TO50FT 51TO75FT 76TO100FT
Hot Gas
Qty
Line
2
1
2
1
2
11
2or3
11
(in.)
1
⁄
2
1
⁄
2
1
⁄
2
7
⁄
8
1
⁄
2
7
⁄
8
1
⁄
2
1
⁄
1
⁄
2
1
⁄
8
8
Liquid
Line
(in.)
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
5
⁄811
1
⁄22or37⁄
5
⁄811
Qty
1
1
2
1
2
1
2
Hot Gas
Line
(in.)
5
⁄
8
7
⁄
8
5
⁄
8
7
⁄
8
7
⁄
8
7
⁄
8
7
⁄
8
1
⁄
8
1
⁄
8
8
Liquid
Line
(in.)
Qty
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
1
⁄
2
5
⁄
8
1
⁄
2
5
⁄811
1
⁄22or3
5
⁄811
LENGTH OF PIPE
Hot Gas
Line
(in.)
1
1
2
11
2
11
2
7
⁄
8
7
⁄
8
7
⁄
8
1
⁄
8
7
⁄
8
1
⁄
8
7
⁄
8
1
⁄
8
7
⁄
8
1
⁄
8
2. Line sizes are in inches.
3. A hot gas line check valve is recommended when the 09BY condenser is installed above the compressor. Pressure loss through
recommended hot gas line check valve has been included in 16
to 100 ft length applications.
Liquid
Line
(in.)
1
⁄
2
1
⁄
2
1
⁄
2
5
⁄811
1
⁄
2
5
⁄811
1
⁄
2
5
⁄811
1
⁄22or37⁄
7
⁄811
Qty
1
1
2
2
2
Hot Gas
Line
(in.)
7
⁄
8
7
⁄
8
7
⁄
8
1
⁄
7
⁄
8
1
⁄
7
⁄
8
1
⁄
8
3
⁄
8
8
8
8
Liquid
Line
(in.)
1
⁄
2
1
⁄
2
1
⁄
2
5
⁄811
1
⁄
2
5
⁄811
1
⁄
2
7
⁄811
1
⁄22or37⁄
7
⁄811
Qty
1
1
2
2
2
Hot Gas
Line
(in.)
7
⁄
8
7
⁄
8
7
⁄
8
1
⁄
8
7
⁄
8
1
⁄
8
7
⁄
8
3
⁄
8
8
3
⁄
8
Liquid
Line
(in.)
1
⁄
2
5
⁄
8
1
⁄
2
5
⁄
8
5
⁄
8
7
⁄
8
5
⁄
8
7
⁄
8
5
⁄
8
7
⁄
8
9
Page 10
CHECK VALVE — When the 09BY condenser is installed
with the condenser located above the compressor evaporator, it is recommended that a field-supplied check valve be
installed on the hot gas discharge line. This prevents refrigerant which condenses in the discharge line during the off
cycle from draining back into the compressor. Install the check
valve at the compressor line before the line goes up to the
condenser. Check valve part no. EC37BP183 or similar may
be used.
SERVICE VALVES — Service valves are not factory installed on the 09BYunits. If isolation of the refrigerant charge
in the condenser from the unit or the piping system is desired, it is recommended that field-supplied service valves
be installed in the discharge and liquid line inside the 09BY
condenser.A Schrader port connection is also recommended
on the liquid and discharge line at the condenser for ease in
troubleshooting when the condenser is located out of sight
from the compressor evaporator unit.
Step 6 — Ductwork — The 09BY unit is designed for
use either with or without ductwork or rain louvers. If either
is used, care must be taken to eliminate air recirculation. Recirculation can be minimized by blocking the front discharge and discharging through an extension elbow. When
properly designed, hinged discharge louvers can be applied
to ductwork and to the condenser air discharge. Fixed rain
louvers over discharge outlets can cause excessive recirculation and nuisance high-pressure switch cutouts. Obstructions closer than 10 ft to the discharge air pattern can cause
significant recirculation. See Fig. 9 for ductwork installation
to prevent recirculation of air.
If ductwork is used from standard discharge openings and
another bird screen is provided, remove factory-supplied screen
to reduce static pressure loss. Units 09BY006-014 have a
factory-installed flange to connect ductwork to the condenser air inlet. Units 09BY016 and 024 are provided with
flanges taped inside the unit for shipping. To attach the duct
to the unit inlet, mount the flange by removing the screws
that hold the condenser coil. Insert the flange and replace the
screws. See Fig. 10. Take care not to puncture the coil when
removing and installing screws.
CONDENSER AIR DUCT INSULATION — The condenser air duct must be insulated on indoor installations to
prevent moisture condensation on the unit panels during cold
weather. Insulate as follows:
1. If metal ductwork is used, insulation may be applied on
the inside of the duct. This installation should be extended to cover the inside of the 09BY duct flanges.
It is necessary to insulate the inside of the ducts at the
duct flanges to reduce heat loss from the metal cabinet by
conduction through the duct flanges and into the cold duct.
Interior insulation allows the metal duct to approach room
temperature. It also prevents condensation from forming
and collecting under the insulation which will occur with
exterior duct insulation.
NOTE: Fiberglass duct board may also be used if permitted by local codes.
2. If insulation is applied to the outside of the metal duct,
the inside must be insulated for a length of 10 in. from
the unit (including the duct flanges) or up to the flexible
duct vapor barrier on the outside, which must be tightly
sealed to prevent condensation under the insulation.
DIMENSIONS (in.)
UNIT
09BY
006 24 11
008 24 14 6 20 161⁄8267⁄8481⁄
012 24 14 6 20 161⁄8267⁄8555⁄
014 30 14 6 20 303⁄8267⁄8631⁄
016 30 20 6 26 303⁄8363⁄8859⁄
024 30 20 6 26 303⁄8367⁄8857⁄
ABCD E F G
1
⁄86171⁄8161⁄8223⁄8411⁄
8
4
8
4
16
16
Fig. 9 — Condenser Ductwork Details
10
Page 11
Fig. 10 — Placement of Duct Flanges on Units
09BY016 and 09BY024
3. Ahigh-density fiberglass (2 lb minimum density) or semirigid foamed insulation such as Styrofoam™ will be required inside the ducts to prevent air erosion. The insulation must be firmly secured in the discharge duct near
the blower discharge to withstand the high air velocity.
Step 7 — Insulate the Unit — The 09BY units are
not insulated. If the unit will be operated during cold weather
and the equipment room is not at outdoor temperatures, the
unit cabinet should be insulated to prevent condensation. Insulate the unit in the same manner as the ductwork insulation described in Condenser Air Duct Insulation section on
page 10.
Step 8 — Complete Electrical Connections
IMPORTANT: Units may be used on 208, 230, 460,
or 575 v, 3-phase systems. As shipped from the factory, units are wired for 460 v or 575 v operation. If
the unit will be used on a 208 or 230 v system, rewire
the condenser fan motor prior to unit start-up. The 575-v
motor is connected to the proper voltage as shipped,
and all connections are internal to the motor.
To rewire the unit, disconnect and reconnect the wires at
the motor junction box as shown on the connection diagram
on the unit motor cover or in the unit wiring book.
GENERAL — Verify that nameplate electrical requirements
match available power supply.Voltage at condenser must be
within the minimum and maximum shown in Table 4 and
phases must be balanced within 2%. Contact local power company for line voltage corrections. Never operate a motor where
a phase imbalance in supply voltage is greater than 2%. Use
the following formula to determine the percentage of voltage imbalance:
% Voltage Imbalance
= 100 x
Example: Supply voltage is 240-3-60.
max voltage deviation from average voltage
average voltage
AB = 243 v
BC = 236 v
AC = 238 v
Average Voltage =
243 + 236 + 238
717
=
3
3
= 239 v
Table 4 — Electrical Data
UNIT
09BY
006
008
012
014
016
024
FLA — Full Load Amps
MCA — Minimum Circuit Amps. Used for wire sizing.
MOCP — Maximum Overcurrent Protection
NEC — National Electrical Code
*Units are suitable for use on electrical systems where voltage sup-
plied to the unit terminals is within listed minimum and maximum
limits.
(Complies with NEC Section 430-24.)
VOLTAGE
(3 Ph, 60 Hz)
208/230 187 254 7.5
460 414 508 3.4 4.3 15
575 518 632 2.7 3.4 15
208/230 187 254 10.5
460 414 508 4.8 6.0 15
575 518 632 3.9 4.9 15
208/230 187 254 10.5
460 414 508 4.8 6.0 15
575 518 632 3.9 4.9 15
208/230 187 254 16.7
460 414 508 7.6 9.5 15
575 518 632 6.1 7.6 15
208/230 187 254 16.7
460 414 508 7.6 9.5 15
575 518 632 6.1 7.6 15
208/230 187 254 30.8
460 414 508 14.0 17.5 30
575 518 632 11.0 13.8 20
LEGEND
SUPPLY VOLTAGE* FAN POWER SUPPLY
Min Max FLA Hp MCA MOCP
9.4 15
2
13.6 20
3
13.6 20
3
20.9 35
5
20.9 35
5
38.5 60
10
NOTES:
1. Maximum allowable phase imbalance:Voltage± 2%;Amps± 10%.
2. Maximum incoming wire size for power circuit is 2/0 max.
11
Page 12
Determine maximum deviation from average voltage:
(AB) 243 – 239=4v
(BC) 239 – 236=3v
(AC) 239 – 238=1v
Maximum deviation is then 4 v.To determine the percentage
of voltage imbalance:
% Voltage Imbalance = 100 x
4
239
= 1.7%
This amount of phase imbalance is satisfactory since it is
below the allowable maximum of 2%.
IMPORTANT: If supply voltage phase imbalance is
more than 2%, contact your local electric utility company immediately.
Condenser operation on improper line voltage or excessive phase imbalance may be considered abuse and any resulting damage may not be covered by Carrier warranty.
All wiring must be in accordance with local or NEC
(National Electrical Code) regulations. Refer to Fig. 11 for
combination field wiring.
MAIN POWER WIRING — The units must have adequate
overcurrent protection, fuses, or HACR (Heating, Air
Conditioning and Refrigeration) breakers, according to the
national and applicable local codes.
For field power connections, all main power wiring enters
the unit through a factory-punched access hole under the control box. Attach power wires to the 3 power connections in
the unit control box using field-supplied wirenuts. Be sure to
install a ground wire. See Fig. 11.
CONTROL CIRCUIT POWER WIRING — Connect 24-v
control wires to the 2 low-voltage connections at the compressor contactor. Use field-supplied wirenuts to make the
connections in the control box low-voltage section.
GENERAL WIRING NOTES
1. Power entry is at one end only.
2. Fan motors are thermally protected. All motors are pro-
tected against primary single-phasing conditions.
3. Replacement of factory wires must be with appliance wir-
ing material rated 105 C or its equivalent.
4. Factory wiring is in accordance with NEC. Field modi-
fications or additions must be in compliance with all applicable codes.
LEGEND
EQUIP — Equipment
FMC — Fan Motor Contactor
GND — Ground
Field Wiring
Factory Wiring
Field Splice
Marked Terminal
Fig. 11 — Combination Field Wiring
12
Page 13
START-UP
Condenser Fan Adjustment
To prevent personal injury, be sure wire fan guards are
secured in place over each fan discharge (or that fans
are ducted) before starting the unit.
Complete Unit Start-Up Checklist on page CL-1 prior to
start-up of this system.
System Evacuation and Dehydration — Refer to
GTAC II, Module 4, ‘‘Dehydration for Proper Evacuation
and Dehydration Techniques.’’
Charging Procedure — BEFORE CHARGING THE
SYSTEM, INSTALL OR REPLACE THE FILTER DRIER(S) CONNECTED TO THE LIQUID LINE IN THE
INDOOR UNIT TO PREVENT CONT AMINATIONWITHIN
THE SYSTEM. Refer to GTAC II, Module 5 ‘‘Charging,
Recovery,Recycling, and Reclamation’’for proper charging
techniques.
Check Operation of Condenser Fan Motor Controls and Rotation of Fans —
clockwise as viewed from belt access panel.
IMPORTANT: Check for proper fan rotation. If rotation needs to be reversed, disconnect main power supply and switch any 2 leads at the load side of the disconnect switch.
Rotation should be
Adjust Fan Speed — The 09BY units are belt-driven
condenser units and allow for a wide range of inlet static and
condenser airflow requirements. It may be necessary to adjust the condenser airflow to account for these inlet conditions. Inadequate airflow will result in poor unit performance
and possible nuisance tripping of high-pressure switches.
If an airflow is not specified, use the nominal airflow from
Table 2 and adjust the fan speed to compensate for actual
job conditions. Use Table 5 to determine proper fan speed.
If the unit trips on high pressure due to high condensing temperature, then it may be necessary to increase the fan speed
and condenser airflow.
To prevent personal injury, be sure wire fan guards are
secured in place over each fan discharge (or that fans
are ducted) before starting the unit.
TO CHANGE FAN SPEED
1. Shut off unit power supply.
2. Loosen fan belt by loosening fan motor from mounting
bracket. Do not loosen fan motor mounting bracket from
unit.
3. Loosen movable pulley flange setscrew (Fig. 12).
4. Screw movable flange toward fixed flange to increase fan
speed and away from fixed flange to decrease speed. Increasing fan speed increases load on motor. Do not exceed maximum allowable fan speed (Table 2) or motor
full load amps indicated on motor nameplate and in
Table 4.
5. Set movable flange setscrew at nearest flat of pulley hub
and tighten setscrew.
6. Check pulley alignment and belt tension adjustment as
described below.
7. Check fan operation. Repeat above procedure as
required.
PULLEYALIGNMENT — Shut off unit power supply.Loosen
fan motor pulley setscrews and slide fan pulley along fan
shaft. Make angular alignment by loosening motor from mounting bracket (see Fig. 12). Check alignment with a
straightedge.
BELT TENSIONADJUSTMENT — Shut off unit power supply. Loosen fan motor mounting plate bolts. Do not loosen
motor mounting bracket from unit. Move fan motor mounting plate until proper belt tension is achieved (approximately
span).
1
⁄2-in. deflection with 8-lb tension at midpoint of belt
SERVICE
Cleaning Condenser Coils
Do not use high-pressure water or air. Damage to fins
may result.
Clean coils with a vacuum cleaner, fresh water, compressed air, or a bristle brush (not wire). Backflush coil to
remove debris. Commercial coil cleaners may also be used
to help remove grease and dirt. Steam cleaning is NOT recommended. Units installed in corrosive environments should
be cleaned as part of a planned maintenance schedule. In
this type of application, all accumulations of dirt should be
cleaned off the coil.
Lubrication — Fan motors have permanently lubricated
bearings.
Fig. 12 — Condenser Fan Pulley Adjustment
13
Page 14
Table 5 — Condenser Fan Performance
UNIT
09BY
006
008
012
014
016
024
BHP — Brake Horsepower
NOTES:
1. Shaded areas indicate field supplied drive and or motor are required.
2. Nominal cfm is 600 cfm/ton.
AIRFLOW
(Cfm)
2000 676 0.26 905 0.51 1085 0.80 1230 1.08 1348 1.34 1449 1.60
2500 845 0.51 1039 0.82 1197 1.14 1339 1.51 1466 1.88 1570 2.21
3000 1014 0.88 1188 1.28 1321 1.61 1450 2.02 1569 2.46 1684 2.93
3500 1183 1.39 1336 1.86 1458 2.26 1575 2.70 1683 3.18 — —
4000 1352 2.08 1487 2.61 1608 3.15 1704 3.53 ————
3000 589 0.43 766 0.79 900 1.21 1000 1.61 1101 2.00 1201 2.44
4000 785 1.03 923 1.45 1051 2.04 1157 2.61 1234 3.10 1307 3.63
4500 883 1.48 1009 1.93 1118 2.50 1236 3.26 1315 3.82 — —
5000 982 2.00 1098 2.54 1194 3.09 1300 3.87 ————
6000 1178 3.46 1279 4.13 1364 4.73 — — — — ——
4000 594 0.74 720 1.06 879 1.76 957 2.15 1028 2.61 1099 3.01
5000 743 1.44 846 1.87 957 2.41 1089 3.38 1154 3.79 1214 4.40
6000 892 2.49 984 2.99 1058 3.48 1163 4.31 1283 5.63 1346 6.17
7000 1040 3.96 1129 4.60 1187 5.17 1255 5.66 1348 6.72 — —
8000 1189 5.91 1274 6.74 1323 7.24 ——————
5000 777 1.19 894 1.62 990 1.98 1077 2.34 1166 2.73 1258 3.21
6000 932 2.06 1033 2.60 1118 3.04 1196 3.47 1268 3.92 1343 4.35
7000 1088 3.27 1176 3.88 1255 4.45 1323 4.96 ————
8000 1243 4.89 1323 5.61 ————————
9000 ————————————
6000 578 0.83 655 1.04 736 1.32 823 1.63 893 1.99 1005 3.09
8000 771 1.97 830 2.31 881 2.51 944 2.88 1017 3.36 1081 3.75
9000 867 2.81 918 3.19 976 3.47 1017 3.74 1072 4.20 1139 4.75
10000 964 3.85 1009 4.27 1064 4.65 1096 4.87 1147 5.26 1195 5.79
12000 1157 6.65 1198 7.08 ————————
8000 496 1.14 547 1.56 631 1.83 701 2.21 763 2.68 807 3.13
10000 586 1.63 598 2.09 668 2.35 743 2.83 799 3.25 854 3.76
12000 703 3.85 760 4.62 809 5.09 859 5.37 917 5.85 — —
14000 821 6.12 872 7.02 912 7.70 955 8.30 ————
16000 938 9.14 ——————————
LEGEND
0.0 0.2 0.4 0.6 0.8 1.0
Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp Rpm Bhp
EXTERNAL STATIC PRESSURE (in. wg)
14
Page 15
TO CHANGE FAN WHEEL — If a fan wheel should fail,
it may be replaced as follows:
1. Remove belts from fan pulley.
2. Loosen locking collars on the fan bearings and set screws
on the fan wheels.
3. Remove the shaft through the access panel on either side
of the unit.
4. Remove the fan cut-off plate in the fan discharge.
5. Remove the fan wheel through the fan discharge
opening.
6. Replace the wheel, and reverse Steps 1-4 above.
TO REPLACE FAN BEARING — If a fan bearing fails,
replace it as follows:
1. Remove belts from the fan pulley.
2. Support fan shaft.
3. Loosen locking collar on fan bearing.
4. Remove bearing from the shaft.
5. Install new bearing onto the shaft, and reverse Steps 1-3
above.
NOTE: Fan bearing and shaft are metric sizes.
MAINTENANCE
Cleaning—
inside and out. Frequency of cleaning will depend on unit
location and area conditions.
The 09BY unit should be thoroughly cleaned
Drains must be kept free of dirt and trash. Coils can be
cleaned with a stiff brush, vacuum cleaner, or compressed
air. Coil can be reached through access panels.
Inspection — Check coil baffles for tight fit to prevent
air from bypassing the coil.
Check panels for air leakage, particularly those sealing the
fan and coil compartments.
Check for loose electrical connections, oil level, proper
refrigerant charge, and refrigerant piping leaks. The 09BY
fan motor and fan shaft bearings are permanently lubricated.
Further lubrication is not required. Before start-up, be sure
all service valves are open (backseated).
Air Filters — Air filters may be installed on the con-
denser air inlet. Air filters should be replaced or cleaned on
a regular basis depending on how dirty the operating environment is. Failure to clean air filters regularly will result in
loss of unit performance and possible nuisance tripping of
the high-pressure switch.
Condensate Drain — If the 09BY unit is used with a
condensate drain to remove rain water, the drain pan and
trap should be cleaned at least twice per year.After cleaning,
test the condensate drain for proper operation by pouring a
bucket of water into the condensate drain pan. The water
should flow out immediately and evenly.
15
Page 16
TROUBLESHOOTING
See Table 6 for problems and possible solutions.
Table6—Troubleshooting
PROBLEM POTENTIAL CAUSE SOLUTION
1. Fan belts are slipping or broken.
Unit is tripping on
high-pressure switch
or high discharge
pressure is noted.
Compressor or
evaporator is
losing capacity.
Unit is noisy.
Water drips from
the unit.
Fan motor trips
on internal
protection.
*Airflow should be within the range shown in Table 2, and should also be as close as possible to nominal airflow shown in Table 2 for optimum
performance.
2. Fan is not delivering adequate air for condenser.
3. Low-ambient damper is not functioning correctly
(if equipped).
4. Dirty coil or plugged or restricted air filter and/or
louvers.
5. Service valve(s) is closed.
1. Dirty coil or plugged or restricted air filter and/or
louvers.
2. Airflow is not adequate.
1. Airflow is turned too high.
2. Belt and pulley are not properly aligned.
3. Proper vibration isolation has not been applied.
1. Rain water drain not functioning properly.
2. Unit is not insulated to prevent condensation.
Airflow is set too high for motor (motor amps exceed nameplate value).
1. Check and replace belts as necessary.
2. Check airflow (see Table 2)*.
3. Check damper operation and adjust as required.
4. Check and clean coil, filter, and louver as required.
5. Open valve(s) and check for restrictions in
refrigerant lines.
1. Check and clean coil, filter, and louver as required.
2. Check airflow and determine if proper subcooling
is provided.
1. Slow down motor and check discharge pressure.
2. Check and adjust alignment.
3. Isolate unit properly.
1. Clean drain and check drain operation.
2. Insulate unit as required.
Slow motor down and check discharge
pressure.
16
Page 17
Page 18
Copyright 1996 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 4
Tab 4a 4a
PC 111 Catalog No. 530-969 Printed in U.S.A. Form 09BY-2SI Pg 18 9-96 Replaces: 09BY-1SI
Page 19
START-UP CHECKLIST
A. Preliminary Information
COMPRESSOR BEARING UNIT: MODEL NO. SERIAL NO.
09BY UNIT: MODEL NO. SERIAL NO.
FIELD-INSTALLED ACCESSORIES
B. Pre-Start-Up
CONDENSING UNIT
IS THERE ANY SHIPPING DAMAGE?
IF SO, WHERE:
WILL THIS DAMAGE PREVENT UNIT START-UP? (Y/N)
CHECK POWER SUPPLY. DOES IT AGREE WITH UNIT? (Y/N)
HAS THE GROUND WIRE BEEN CONNECTED? (Y/N)
HAS THE CIRCUIT PROTECTION BEEN SIZED AND INSTALLED PROPERLY? (Y/N)
ARE THE POWER WIRES TO THE UNIT SIZED AND INSTALLED PROPERLY? (Y/N)
HAVE DRAINAGE CONNECTIONS BEEN COMPLETED? (Y/N)
HAVE FAN AND MOTOR PULLEYS BEEN CHECKED FOR PROPER ALIGNMENT? (Y/N)
DO THE FAN BELTS HAVE PROPER TENSION? (Y/N)
HAS CORRECT FAN ROTATION BEEN CONFIRMED? (Y/N)
HAS WATER BEEN PLACED IN DRAIN PAN TO CONFIRM PROPER DRAINAGE? (Y/N)
ARE PROPER AIR FILTERS IN PLACE? (Y/N)
(Y/N)
CONTROLS
HAVE THERMOSTAT AND INDOOR-FAN CONTROL WIRING CONNECTIONS BEEN
MADE AND CHECKED? (Y/N)
ARE ALL WIRING TERMINALS (including main power supply) TIGHT? (Y/N)
HAS CRANKCASE HEATER (IF EQUIPPED) ON UNIT BEEN ENERGIZED
FOR 24 HOURS? (Y/N)
09BY UNIT
HAS WATER BEEN PLACED IN DRAIN PAN (IF REQUIRED) TO CONFIRM PROPER
DRAINAGE? (Y/N)
ARE PROPER AIR FILTERS IN PLACE? (Y/N)
HAVE FAN AND MOTOR PULLEYS BEEN CHECKED FOR PROPER ALIGNMENT? (Y/N)
DO THE FAN BELTS HAVE PROPER TENSION? (Y/N)
HAS CORRECT FAN ROTATION BEEN CONFIRMED? (Y/N)
PIPING
HAVE LEAK CHECKS BEEN MADE AT COMPRESSOR, CONDENSER, EVAPORATOR,
TXVs (Thermostatic Expansion Valves), SOLENOID VALVES, FILTER DRIERS, AND FUSIBLE PLUGS
WITH A LEAK DETECTOR? (Y/N)
LOCATE, REPAIR, AND REPORT ANY LEAKS
HAVE ALL COMPRESSOR SERVICE VALVES BEEN FULLY OPENED (BACKSEATED)? (Y/N)
HAVE LIQUID LINE SERVICE VALVES BEEN OPENED? (Y/N)
IS THE OIL LEVEL IN THE COMPRESSOR CRANKCASE ON THE UNIT IN VIEW IN THE
COMPRESSOR SIGHT GLASS (IF APPROPRIATE)? (Y/N)
HAS CONDENSER PRESSURE RELIEF BEEN PROVIDED? (Y/N)
CL-1
Page 20
CHECK VOLTAGE IMBALANCE
IS CONDENSER MOTOR WIRED FOR CORRECT VOLTAGE? (Y/N)
LINE-TO-LINE VOLTS: AB VACVBCV
(AB + AC + BC)/3 = AVERAGE VOLTAGE =
MAXIMUM DEVIATION FROM AVERAGE VOLTAGE =
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.
C. Start-Up
CHECK INDOOR (EVAPORATOR) FAN SPEED AND RECORD.
CHECK OUTDOOR (CONDENSER) FAN SPEED AND RECORD.
AFTER AT LEAST 15 MINUTES RUNNING TIME, RECORD THE FOLLOWING MEASUREMENTS:
OIL PRESSURE (Where Appropriate)
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:
CIRCUIT A (L1/L2)
CIRCUIT B (L1/L2) /
CIRCUIT C (L1/L2) /
NOTES:
/
CUT ALONG DOTTED LINE CUT ALONG DOTTED LINE
Copyright 1996 Carrier Corporation
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 2 4
Tab 4a 4a
PC 111 Catalog No. 530-969 Printed in U.S.A. Form 09BY-2SI Pg CL-2 9-96 Replaces: 09BY-1SI
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