Johnson Controls YD360 User manual

R-410A
MODELS: YD360 Thru 600
30 - 50 Ton
60 Hertz
1062444-YIM-A-0913
TABLE OF CONTENTS
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Renewal Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Agency Approvals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Phasing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Electrical Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Refrigerant Mains . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Piping And Electrical Connection Sizes . . . . . . . . . . . . . . 16
Piping And Electrical Connections . . . . . . . . . . . . . . . . . . 17
Start-Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Crankcase Heater. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Unit Control Board Option Setup. . . . . . . . . . . . . . . . . . . . 21
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Typical Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Start-Up Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
LIST OF TABLES
1 YD360 thru 600 Physical Data. . . . . . . . . . . . . . . . . . . . . 4
2 Unit Application Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
3 Corner Weight & Center Of Gravity (Inches) . . . . . . . . . . 6
4 Minimum Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5 Electrical Data - Outdoor Unit. . . . . . . . . . . . . . . . . . . . . . 9
6 Unit Dimensions (Inches). . . . . . . . . . . . . . . . . . . . . . . . 14
7 Piping And Electrical Connection Sizes (30/40/50t)
(Inches) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8 Electrical Power Knockout Sizes (Inches) . . . . . . . . . . . 16
9 YD360 thru 600 Unit Control Board Flash Codes . . . . . 20
LIST OF FIGURES
1Corner Weights & Center Of Gravity . . . . . . . . . . . . . . . . . 6
2 Typical Rigging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Typical Field Wiring Diagram ND360/480 Evaporator Units,
ND600 Air Handler and M1CZ600A Evaporator Coil when
Matched with YD360/480/600 Condenser . . . . . . . . . . . 12
4 Typical ND360/480 & M1CZ600A Liquid Line Solenoid
Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5 Typical Liquid Line Solenoid Wiring . . . . . . . . . . . . . . . . . 13
6 YD Unit Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 30 Ton Power And Control Wiring Connections . . . . . . . . 15
8 40 & 50 Ton Power And Control Wiring Connections . . . . 15
9 30 Ton Piping Connections . . . . . . . . . . . . . . . . . . . . . . . 16
10 40 & 50 Ton Piping Connections . . . . . . . . . . . . . . . . . . . 17
11 Fan Orientation Control Box End . . . . . . . . . . . . . . . . . . 19
12 Compressor Location . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
13 Unit Control Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
14 YD360 Charging Curves . . . . . . . . . . . . . . . . . . . . . . . . . 22
15 YD480 Charging Curves . . . . . . . . . . . . . . . . . . . . . . . . . 22
16 YD600 Charging Curves . . . . . . . . . . . . . . . . . . . . . . . . . 23
17 Typical 208/230 Volt, YD360/480/600 Condensing Unit
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
18 Typical 460/575 Volt, YD360/480/600 Condensing Unit
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

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2Johnson Controls Unitary Products
Nomenclature
General
These condensing units are designed for outdoor installation on
a roof or at ground level. Every unit is completely piped and
wired at the factory and is shipped ready for immediate
installation. Only the liquid and suction lines to the evaporator
coil, the filter drier, the thermostat wiring and the main power
wiring are required to complete the installation. Each unit is
dehydrated, evacuated, leak tested and pressure tested at 450
psig before being pressurized with a holding charge of
refrigerant R-410A for shipment and/or storage.
All controls are located in the front of the unit and are readily
accessible for maintenance, adjustment and service. All wiring
(power and control) can be made through the front of the unit.
Product Category
Y = Split System, Condenser, AC, R-410A
Product Identifier
D = Standard Efficiency, 4-Pipe, R-410A
Nominal Cooling Capacity - MBH
360 = 30 Ton
480 = 40 Ton
600 = 50 Ton
C00 = Cooling Only
Product Options
AA = None
TA = Technicoat Condenser Coil
Installation Options
A = None
2 = 208/230-3-60
4 = 460-3-60
5 = 575-3-60
Configured Split Condenser Model Number Nomenclature
A = Standard Motor
Airflow
Product Generation
1 = First Generation
Voltage
Heat Type & Nominal Heat Capacity
YD360 C00 A 2AAA 2A
Product Style
A = Style A
1 = Disconnect
B = Option 1
Options
This Split-System (Air Condensing / Air Handling) unit is
one component of an entire system. As such it requires
specific application considerations with regard to the
rest of the system (air handling unit, duct design,
condensing unit, refrigerant piping and control scheme).
Failure to properly apply this equipment with the rest of
the system may result in premature failure and/or
reduced performance / increased costs. Warranty
coverage specifically excludes failures due to improper
application and Unitary Products specifically disclaims
any liability resulting from improper application.
Please refer to the equipment Technical Guide,
Installation Manual and the piping applications bulletin
247077 or call the applications department for Unitary
Products @ 1-877-UPG-SERV for guidance.

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Johnson Controls Unitary Products 3
Safety Considerations
Installer should pay particular attention to the words: NOTE,
CAUTION, and WARNING. Notes are intended to clarify or
make the installation easier. Cautions are given to prevent
equipment damage. Warnings are given to alert installer that
personal injury and/or equipment damage may result if
installation procedure is not handled properly.
Reference
This instruction covers the installation and operation of the
basic condensing unit. For refrigerant piping installation
instructions refer to document 247077 “Application Data -
General Piping Recommendations for Split System Air
Conditioning and Heat Pumps”. For information on the
installation and operation of the evaporator blower units, refer
to Instruction Manual No. 562726.
All accessories come with a separate Installation Manual.
Renewal Parts
Contact your local Source 1 Distribution Center for authorized
replacement parts.
Agency Approvals
Design certified by CSA as follows:
1. For use as a cooling unit.
2. For outdoor installation only.
Inspection
As soon as a unit is received, it should be inspected for possible
damage during transit. If damage is evident, the extent of the
damage should be noted on the carrier’s freight bill. A separate
request for inspection by the carrier’s agent should be made in
writing.
Improper installation may create a condition where the
operation of the product could cause personal injury or
property damage. Improper installation, adjustment,
alteration, service or maintenance can cause injury or
property damage. Refer to this manual for assistance or
for additional information, consult a qualified contractor,
installer or service agency.
Before performing service or maintenance operations on
unit, turn off main power switch to unit. Electrical shock
could cause personal injury. Improper installation,
adjustment, alteration, service or maintenance can
cause injury or property damage. Refer to this manual.
For assistance or additional information consult a
qualified installer, service agency or the gas supplier.
This system uses R-410A Refrigerant which operates at
higher pressures than R-22. No other refrigerant may be
used in this system. Gage sets, hoses, refrigerant
containers and recovery systems must be designed to
handle R-410A. If you are unsure, consult the
equipment manufacturer. Failure to use R-410A
compatible servicing equipment may result in property
damage or injury.
This product must be installed in strict compliance with
the enclosed installation instructions and any applicable
local, state and national codes including, but not limited
to, building, electrical, and mechanical codes.

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Physical Data
Table 1: YD360 thru 600 Physical Data
Component Models
YD360 YD480 YD600
Nominal Tonnage 30 40 50
REFRIGERANT
Refrigerant type R-410A R-410A R-410A
Holding charge (lb)1
1. Holding Charge is the amount in the unit as shipped from the factory.
1.0 1.0 1.0
Operating Charge (lb)2
2. Includes matched evaporator unit with 25 ft of piping.
System #1 35 47.0 51.0
System #2 35 47.0 51.0
DIMENSIONS (inches)
Length 128.5 128.5 128.5
Width 88.5 88.5 88.5
Height 37.5 57.7 57.7
WEIGHTS (lb)
Shipping 1875 2315 2345
Operating 1895 2347 2381
COMPRESSORS
Type Tandem Scroll Tandem Scroll Tandem Scroll
Quantity 2 2 2
Cooling
Nominal Capacity (Tons) System #1 15 20 25
System #2 15 20 25
Capacity Stages System #1 2 2 2
System #2 2 2 2
SYSTEM DATA
No. Refrigeration Circuits 2 2 2
Suction Line OD (in.) 1 5/8 1 5/8 1 5/8
Liquid Line OD (in.) 7/8 7/8 7/8
OUTDOOR COIL DATA
Face area (Sq. Ft.) System #1 32.5 45.5 52.0
System #2 32.5 45.5 52.0
Rows 222
Fins per inch 16 16 16
Tube diameter (in.) 3/8 3/8 3/8
Circuitry Type Interlaced Interlaced Interlaced
Refrigerant Control --- --- ---
CONDENSER FAN DATA
No. Fans / Diameter (in.) 4/30 4/30 4/30
Type Axial Axial Axial
Drive type Direct Direct Direct
No. speeds 1 1 1
Number of motors System #1 2 2 2
System #2 2 2 2
Motor HP (ea.) 1 1/2 1 1/2 1 1/2
Rotation3
3. When viewing the shaft end of the motor.
CW CW CW
RPM 1140 1140 1140
Nominal CFM System #1 15400 19400 19900
System #2 15400 19400 19900

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Johnson Controls Unitary Products 5
Installation
Limitations
These units must be installed in accordance with all national
and local safety codes. If no local codes apply, installation must
conform to the appropriate national codes. Units are designed
to meet National Safety Code Standards. If components are to
be added to a unit to meet local codes, they are to be installed
at the dealer's and/or the customer's expense.
Location
Use the following guidelines to select a suitable location for
both the condensing unit and the evaporator.
1. The condensing unit is designed for outdoor installation
only.
2. The condenser fans are the propeller type and are not
suitable for use with ductwork in the condenser air stream.
3. The condensing unit and the evaporator should be
positioned to minimize the number of bends in the
refrigerant piping.
4. The condensing unit should be as close to the evaporator
as practical.
5. The condensing unit should not be installed where normal
operating sounds may be objectionable.
6. The evaporator should be located within the building, either
outside or inside the conditioned space.
Rooftop Locations
Be careful not to damage the roof. Consult the building
contractor or architect if the roof is bonded. Choose a location
with adequate structural strength to support the unit.
The condensing unit must be mounted on level supports. The
supports can be channel iron beams or wooden beams treated
to reduce deterioration.
Minimums of two (2) beams are required to support each unit.
The beams should: (1) be positioned perpendicular to the roof
joists. (2) Extend beyond the dimensions of the section to
distribute the load on the roof. (3) Be capable of adequately
supporting the concentrated loads at the corners. These beams
can usually be set directly on the roof. Flashing is not required.
NOTE: On bonded roofs, check for special installation
requirements.
Ground Level Locations
It is important that the units be installed on a substantial base
that will not settle, causing strain on the refrigerant lines and
possible leaks. A one-piece concrete slab with footers that
extend below the frost line is recommended. The slab should
not be tied to the building foundation, as noise will telegraph
through the slab.
Table 2: Unit Application Data
Voltage Variation1
Min. / Max.
1.Utilization range “A” in accordance with AHRI Standard 110.
208/230-3-60 187/252
460-3-60 432/504
575-3-60 540/630
Ambient Air on Condenser Coil
Min. /Max. 40°F/125°F2
2.These units can operate in an ambient temperature of
125°F providing the wet bulb temperature of the air enter-
ing the evaporator coil does not exceed 67°F. Unit can
operate to 0°F if equipped with a low ambient kit.
Suction Pressure at Compressor and
Corresponding Temp. at Saturation
Min. / Max.
106.6 psig / 156.6 psig
32.0 ºF / 55.0 ºF

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Table 3: Corner Weight & Center Of Gravity (Inches)
Figure 1: Corner Weights & Center Of Gravity
NOTE: Front of unit is considered the side having the unit
control box.
Concrete piers can also support ground level units. These piers
should (1) extend below the frost line, (2) be located under each
of the section's four corners, and (3) be sized to carry the load
of the corner it supports.
On either rooftop or ground level installations, rubber padding
can be applied under the unit to lessen any transmission of
vibration.
Holes are provided in the base rails for bolting the unit to its
foundation.
For ground level installations, precautions should be taken to
protect the unit from tampering and unauthorized persons from
injury. Screws on access panels will prevent casual tampering.
Further safety precautions such as a fenced enclosure or
locking devices on the panels may be advisable. Check local
authorities for safety regulations.
Unit Model Unit Weight (Lbs.) Unit Dimensions
(Inches) A B C D Dim X Dim Y Weight
A to B Weight D to C
Shipping Operation Length Width
YD360 1875 1895 128.5 88.5 404 537 533 401 55.2 44.1 934 941
YD480 2315 2347 128.5 88.5 486 675 671 483 53.8 44.1 1154 1161
YD600 2345 2381 128.5 88.5 486 693 685 481 53.0 44.0 1166 1179

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Clearances
Clearance Description Distance in Inches
Overhead (Top) 120
Front 36
Rear 36
Left Side 30
Right Side 30
Bottom1
1.In all installations where snow accumulates and winter oper-
ation is expected, additional height must be provided to
insure normal condenser airflow.
0
The unit must be installed with sufficient clearance for air to
enter the condenser coil, for air discharge and for servicing
access. See Table 4 for clearances.
NOTE: Additional clearance is required to remove the
compressors out the back of the unit, unless a means is
available to lift the compressor out through the top of
the unit.
Rigging
Exercise care when moving the unit. Do not remove any
packaging until the unit is near the place of installation. Rig the
unit by attaching chain or cable slings to the lifting holes
provided in the base rails. Spreader bars, whose length
exceeds the largest dimension across the unit, MUST be used
across the top of the unit.
When preparing to move the unit, always determine the center
of gravity (see Table 3 and Figure 1) of the unit in order to
equally distribute the weight. Slings connected to the
compressor end of a unit will usually have to be made shorter,
so the unit will lift evenly (see Figure 2).
Rig units by attaching chain or cable hooks to the holes
provided on the base rail. See Figure 7 for details on rigging
holes.
The length of the spreader bars must exceed the width of the
unit. Refer to Table 3 for unit weights.
NOTE: If planning to handle the 30-50 ton condenser with a
fork truck, use 1WS0408 skids.
Table 4: Minimum Clearances
Do not permit overhanging structures or shrubs to
obstruct condenser air discharge.
Spreaders, longer than the largest dimension across the
unit must be used across the top of the unit.
Before lifting a unit, make sure that its weight is
distributed equally on the cables so that it will lift evenly.
Figure 2: Typical Rigging
If handling a unit equipped with a 1WS skid,
length of forks must be a minimum of 96”. Fork
lengths less than 96” willnot span the required
width of the skid and can cause damage to the
unit’s base railsor condenser coils.

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Power Wiring
Check the available power and the unit nameplate for correct
voltage. Run the necessary number of properly sized wires to
the unit. Provide a disconnect switch (if not included with the
unit) and fusing as required. Route the conduit through the
large knockout located on the front of the electrical box. See
Table 5 for Electrical Data.
The disconnect switch may be bolted to the side of the unit but
not to any of the removable panels; this would interfere with
access to the unit. Make sure that no refrigerant lines will be
punctured when mounting the disconnect switch, and note that
it must be suitable for outdoor installation.
Control Wiring
Route the necessary low voltage control wires from the
Simplicity™ control board to the the rmostat and also from the
low voltage condenser unit control box to the terminal block
inside the evaporator unit. Refer to Figures 3 thru 5 for field
wiring diagrams.
Compressors
The scroll compressors used in this product are specifically
designed to operate with R-410A Refrigerant and cannot be
interchanged.
The compressor also uses a polyolester (POE oil), Mobil 3MA
POE. This oil is extremely hydroscopic, meaning it absorbs
water readily. POE oil can absorb 15 times as much water as
other oils designed for HCFC and CFC refrigerants. Take all
necessary precautions to avoid exposure of the oil to the
atmosphere.
POE (polyolester) compressor lubricants are known to cause
long term damage to some synthetic roofing materials.
Procedures which risk oil leakage include, but are not limited to,
compressor replacement, repairing refrigerant leaks, replacing
refrigerant components such as filter drier, pressure switch,
metering device or coil.
Units are shipped with compressor mountings which are factory
adjusted and ready for operation.
Compressor Crankcase Heaters
The compressors are equipped with crankcase heaters to
prevent the migration of refrigerant to the compressors. The
heaters are energized only when the unit is not running.
If the main switch is disconnected for long periods of shut down,
do not attempt to start the unit for 8 hours after the switch has
been re-connected. This will allow sufficient time for all liquid
refrigerant to be driven out of the compressor.
Phasing
Three-phase, scroll compressors operate in only one direction.
If the scroll is drawing low amperage, has similar suction and
discharge pressures, or is producing a high noise level, the
scroll is misphased. Change the incoming line connection
phasing to obtain the proper rotation.
All power and control wiring must be in accordance with
National and Local electrical codes.
This system uses R-410A Refrigerant which operates at
higher pressures than R-22. No other refrigerant may be
used in this system.
Do not leave the system open to the atmosphere. Unit
damage could occur due to moisture being absorbed by
the POE oil in the system. This type of oil is highly
susceptible to moisture absorption.
Exposure, even if immediately cleaned up, may cause
embrittlement (leading to cracking) to occur in one year
or more. When performing any service that may risk
exposure of compressor oil to the roof, take precautions
to protect roofing.
Do not loosen compressor mounting bolts.
Scroll compressors require proper rotation to operate
properly. Failure to check and correct rotation may result
in property damage.

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Electrical Data
Table 5: Electrical Data - Outdoor Unit
Model
Compressors Outdoor Fan Motor Minimum
Circuit
Ampacity1
Maximum
Fuse Size
(A)2
Power
Supply Qty RLA (each) MCC (each) LRA (each) Power Supply HP Qty FLA (each)
YD360
208/230-3-60 4 25.0 39 164 208/230-3-60 1 1/2 4 5.8 129.5 150
460-3-60 4 12.2 19 100 460-3-60 1 1/2 4 2.9 63.5 70
575-3-60 4 9.0 14 78 575-3-60 1 1/2 4 2.2 47.1 50
YD480
208/230-3-60 4 30.1 47 225 208/230-3-60 1 1/2 4 5.8 151.1 175
460-3-60 4 16.7 26 114 460-3-60 1 1/2 4 2.9 82.6 90
575-3-60 4 12.2 19 80 575-3-60 1 1/2 4 2.2 60.7 70
YD600
208/230-3-60 4 48.1 75 245 208/230-3-60 1 1/2 4 5.8 227.6 250
460-3-60 4 18.6 29 125 460-3-60 1 1/2 4 2.9 90.7 100
575-3-60 4 14.7 23 100 575-3-60 1 1/2 4 2.2 71.3 80
1. Maximum fuse or maximum circuit breaker (HACR type per NEC).
2. Based on three, 75°C insulated copper conductors in conduit and ambient of 30°C.

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Refrigerant Mains
Line Sizing
When sizing refrigerant pipe for a split-system air conditioner,
check the following:
1. Suction line pressure drop due to friction.
2. Liquid line pressure drop due to friction.
3. Suction line velocity for oil return.
4. Liquid line pressure drop due to vertical rise. For certain
piping arrangements, different sizes of suction line pipe
may have to be used. The velocity of the refrigerant vapor
must always be great enough to carry the oil back to the
compressor.
5. Evaporator Located Below Condenser - On a split
system where the evaporator blower is located below the
condenser, the suction line must be sized for both pressure
drop and for oil return.
6. Condenser Located Below Evaporator - When the
condenser is located below the evaporator blower, the
liquid line must be designed for the pressure drop due to
both friction loss and vertical rise. If the pressure drop due
to vertical rise and friction exceeds 60 psi, some refrigerant
will flash before it reaches the thermal expansion valve.
Flash gas:
1. Increases the liquid line pressure loss due to friction that in
turn causes further flashing.
2. Reduces the capacity of the refrigerant control device
which starves the evaporator.
3. Erodes the seat of the refrigerant control device.
4. Causes erratic control of the refrigerant entering the
evaporator.
Take Adequate Precautions
Many service problems can be avoided by taking adequate
precautions to provide an internally clean and dry system and
by using procedures and materials that conform to established
standards.
Use hard drawn copper tubing where no appreciable amount of
bending around pipes or other obstructions is necessary. If soft
copper is used, care should be taken to avoid sharp bends that
may cause a restriction. Pack fiberglass insulation and a
sealing material such as permagum around refrigerant lines
where they penetrate a wall to reduce vibrations and to retain
some flexibility.
Support all tubing at minimum intervals with suitable hangers,
brackets or clamps.
Braze all copper-to-copper joints with Silfos-5 or equivalent
brazing material. Do not use soft solder. Insulate all suction
lines with a minimum of 1/2" ARMAFLEX or equivalent that
meets local codes. Liquid lines exposed to direct sunlight and/
or high temperatures must also be insulated. Never solder
suction and liquid lines together. They can be taped together for
convenience and support purposes, but they must be
completely insulated from each other.
The liquid and suction service ports on the condenser section
permit leak testing, evacuation, and partial charging of the field
piping and the evaporator without disturbing refrigerant stored
in the condenser during initial installation.
Before beginning installation of the main lines, be sure that the
evaporator section has not developed a leak in transit. Check
pressure at the Schrader valve located on the header of each
coil. If pressure still exists in the system, it can be assumed to
be leak free. If pressure DOES NOT exist the section will need
to be repaired before evacuation and charging is performed.
A filter-drier MUST be field-installed in the liquid line of every
system to prevent dirt and moisture from damaging the system.
Properly sized filter-driers are shipped with each condensing
section.
NOTE: Installing a filter-drier does not eliminate the need for
the proper evacuation of a system before it is charged.
A field-installed moisture indicating sight-glass should be
installed in the liquid line(s) between the filter-drier and the
evaporator coil. The moisture indicating sight-glass can be used
to check for excess moisture in the system.
Both condenser and evaporator sections have copper sealing
disks brazed over the end of liquid and suction connections.
The temperature required to make or break a brazed joint is
high enough to cause oxidation of the copper unless an inert
atmosphere is provided.
NOTE: Dry nitrogen should flow through the system at all times
when heat is being applied and until the joint has
This Split-System (Air Condensing / Air Handling) unit is
one component of an entire system. As such it requires
specific application considerations with regard to the
rest of the system (air handling unit, duct design,
condensing unit, refrigerant piping and control scheme).
Failure to properly apply this equipment with the rest of
the system may result in premature failure and/or
reduced performance / increased costs. Warranty
coverage specifically excludes failures due to improper
application and Unitary Products specifically disclaims
any liability resulting from improper application.
Please refer to the equipment Technical Guide,
Installation Manual and the piping applications bulletin
247077 or call the applications department for Unitary
Products @ 1-877-UPG-SERV for guidance.

1062444-YIM-A-0913
Johnson Controls Unitary Products 11
cooled. The flow of nitrogen will prevent oxidation of the
copper lines during installation.
Always punch a small hole in sealing disks before unbrazing to
prevent the pressure in the line from blowing them off. Do not
use a drill as copper shavings can enter system.
NOTE: Solenoid and hot gas bypass valves (if used) should be
opened manually or electrically during brazing or
evacuating.
NOTE: Schrader valves located on unit service valves should
have their stem removed during brazing to prevent
damage to the valve.
Start Installation
Start Installation of main lines at the condenser unit. Verify the
service valves are fully seated by screwing the stem of both
valves down into the valve body until it stops. Remove the
Schrader valve stem and connect a low-pressure nitrogen
source to the service port on the suction line valve body. Punch
a small hole in the sealing disk; the flow of nitrogen will prevent
any debris from entering the system. Wrap the valve body with
a wet rag to prevent overheating during the brazing process.
Overheating the valve will damage the valve seals. Unbraze the
sealing disk, cool the valve body and prepare the joint for
connections of the main lines. Repeat for the liquid line valve
body.
Connect the main liquid line to the liquid line service valve on
the condenser section, while maintaining a flow of nitrogen.
Cool the valve body and replace the Schrader valve stem on
the service port of the liquid line service valve.
Install the liquid line from the condenser unit to the evaporator
liquid connection, maintaining a flow of nitrogen during all
brazing operations.
The filter-drier and sight glass must be located in this line,
leaving the O.D. unit.
Connect a low-pressure nitrogen source to the Schrader valve
located on the evaporator unit coil headers. Punch a small hole
in the sealing disks, the flow of nitrogen will prevent any debris
from entering the system. Unbraze both liquid and suction
sealing disks and prepare the joints for connections of the main
lines.
Connect the main liquid line to the liquid line connection on the
evaporator unit, while maintaining a flow of nitrogen.
Make the suction line connection at the evaporator and run the
line to the condenser unit. Connect the main suction line to the
suction line service line on the condenser unit, while
maintaining a flow of nitrogen. Cool the valve body and replace
the Schrader valve stem on the service port of the suction line
service valve.
Once the brazing process is complete, leak testing should be
performed on all interconnecting piping and the evaporator
before proper evacuation to 500 microns is performed. Once
the line set and evaporator unit is properly evacuated the
service valves can be opened and the condenser unit is now
ready to charge with the appropriate weight of refrigerant.
Calculate the correct system charge for the condenser unit, the
evaporator unit and the field line set. Charge the system by
introducing liquid refrigerant into the liquid line through the
liquid port connection. Complete adding the refrigerant in vapor
form into the suction port when the compressor is started.
The correct refrigerant pressures are indicated as shown in
Figures 14 through 15.
NOTE: This instruction covers the installation and operation of
the basic condenser unit. For refrigerant piping
installation instructions refer to document 247077
"Application Data - General Piping Recommendations
for Split System Air Conditioning and Heat Pumps".
Never remove a cap from an access port unless the
valve is fully back-seated with its valve stem in the
maximum counter-clockwise position because the
refrigerant charge will be lost. Always use a refrigeration
valve wrench to open and close these service valves.
This system uses R-410A Refrigerant which operates at
higher pressures than R-22. No other refrigerant may be
used in this system. Gage sets, hoses, refrigerant
containers and recovery systems must be designed to
handle R-410A. If you are unsure, consult the
equipment manufacturer. Failure to use R-410A
compatible servicing equipment may result in property
damage or injury.
Wear safety glasses and gloves when handling
refrigerants. Failure to follow this warning can cause
serious personal injury.

1062444-YIM-A-0913
12 Johnson Controls Unitary Products
Figure 3: Typical Field Wiring Diagram ND360/480 Evaporator Units, ND600 Air Handler and M1CZ600A Evaporator Coil
when Matched with YD360/480/600 Condenser
NOTE: On non ND evaporator models, isolation relays must be
installed to avoid overloading on 75VA transformers on
the condensing unit.
Figure 4: Typical ND360/480 & M1CZ600A Liquid Line
Solenoid Wiring
NOTE: For applications on airhandlers/evaporator DX coils
other than ND360-600 certified matchups liquid line
solenoids may be required for proper operation and
refrigerant system dump out.

1062444-YIM-A-0913
Johnson Controls Unitary Products 13
Figure 5: Typical Liquid Line Solenoid Wiring
Standard Terminal Block on ND360/480 and
ND600 with M1CZ600A models. On non ND
models isolation relays must be installed to avoid
overloading on 75 VA transformer on condensing
unit.
Non ND units may not include any or all of the
components required to wire the unit. Use the
diagram as general reference only.
Primary side of transformer
connect to line side of power
supply.
Primary side of transformer
connect to line side of power
supply.

E
D
A
FRONT
B
REAR
RIGHT
LEFT
C
F
G
H
1062444-YIM-A-0913
14 Johnson Controls Unitary Products
Figure 6: YD Unit Dimensions
Table 6: Unit Dimensions (Inches)
MODEL ABCDEFGH
YD360 128.5 88.5 37.5 41.8 40.0 46.1 37.1 23.6
YD480 128.5 88.5 57.7 41.8 40.0 46.1 37.1 23.6
YD600 128.5 88.5 57.7 41.8 40.0 46.1 37.1 23.6

SEE DETAIL RIGGING HOLES
Control Wiring
Power Wiring
DETAIL RIGGING HOLES
SCALE 0.250
2.750
2.500 5.183
2.313
88.140
22.358
20.858
19.358
37.518
12.878 9.628
1062444-YIM-A-0913
Johnson Controls Unitary Products 15
Figure 7: 30 Ton Power And Control Wiring Connections
Figure 8: 40 & 50 Ton Power And Control Wiring Connections
88.140
19.358
20.858
22.358
29.799
33.049
57.689
Control Wiring
Power Wiring

1062444-YIM-A-0913
16 Johnson Controls Unitary Products
Piping And Electrical Connection Sizes
CONNECTION ENTRY 30-40-50T/230V 30-40-50T/460-575V
POWER WIRING 2-1/2” 1-1/2”
Liquid (Sys 2)
Suction (Sys 2)
Liquid (Sys 1)
Suction (Sys 1)
37.518
88.140
50.313
46.190
41.859
37.826
10.984 11.385
Figure 9: 30 Ton Piping Connections
Table 7: Piping And Electrical Connection Sizes (30/40/50T) (Inches)
CONNECTION ENTRY SIZE
SUCTION LINE SYS #1 1-5/8 OD
LIQUID LINE SYS #1 7/8 OD
SUCTION LINE SYS #2 1-5/8 OD
LIQUID LINE SYS #2 7/8 OD
POWER WIRING KNOCKOUT SEE TABLE 8
CONTROL WIRING 7/8 HOLE
Table 8: Electrical Power Knockout Sizes (Inches)

1062444-YIM-A-0913
Johnson Controls Unitary Products 17
Figure 10: 40 & 50 Ton Piping Connections
Piping And Electrical Connections
Piping connections are made from the rear of units.
Connections can be made directly to the suction and liquid line
service valves. Piping can be routed to the units from the left or
right side.
Electrical connections for power and control wiring are made
from the front of all units, left of the electrical control box
access. See Tables 7 & 8 and Figures 7 thru 10 and for piping
sizes and electrical knockout details.
Start-Up
Crankcase Heater
The crankcase heater must be energized at least 8 hours
before starting the compressor. To energize the crankcase
heater, the main disconnect switch must be closed. During this
8 hour period, the system switch on the room thermostat must
be “OFF” to prevent the compressor from starting. Make sure
that the bottom of the compressor is warm to the touch to prove
crankcase heater operation.
Pre-Start Check
Before starting the unit, complete the following check list:
1. Have sufficient clearances been provided?
2. Has all foreign matter been removed from the interior of the
unit (tools, construction or shipping materials, etc.)?
3. Have the condenser fans been rotated manually to check
for free rotation?
4. Are all wiring connections tight?
5. Does the available power supply agree with the nameplate
data on the unit?
6. Is the control circuit transformer set for the proper voltage?
7. Have the fuses, disconnect switch and power wire been
sized properly?
8. Are all compressor hold-down nuts properly secured?
9. Are any refrigerant lines touching each other or any sheet
metal surface? Rubbing due to vibration could cause a
refrigerant leak.
10. Are there any visible signs of a refrigerant leak, such as oil
residue?
11. Has the refrigerant system been leak checked, evacuated
and had the correctly calculated charge weighted in?
12. Is any electrical wire laying against a hot refrigerant line?
Initial Start-Up
1. Supply power to the unit through the disconnect switch at
least 8 hours prior to starting the compressor.
Liquid (Sys 2)
Suction (Sys 2)
Suction (Sys 1)
Liquid (Sys 1)
10.974
57.689
11.385
37.731
41.934
46.206
50.409
88.140
Do not attempt to start the compressor without at least 8
hours of crankcase heat or compressor damage can
occur.

1062444-YIM-A-0913
18 Johnson Controls Unitary Products
2. Move the system switch on the thermostat to the AUTO or
COOL position.
3. Reduce the setting of the room thermostat to energize the
compressor.
4. Check the operation of the evaporator unit per the
manufacturer’s recommendations.
5. With an ammeter, check the compressor amps against the
unit data plate.
6. Check for refrigerant leaks.
7. Check for any abnormal noises and/or vibrations, and
make the necessary adjustments to correct fan blade(s)
touching shroud, refrigerant lines hitting on sheet metal,
etc.
8. After the unit has been operating for several minutes, shut
off the main power supply at the disconnect switch and
inspect all factory wiring connections and bolted surfaces
for tightness.
Operation
Unit Control Overview
This series of condenser units, comes factory equipped with
Simplicity™ controls to monitor all unit functionality and safety
controls. (2 Simplicity™ controls per system on 30, 40 and 50
Ton condensers.)
Safety Controls
The Simplicity™ control board incorporates features to monitor
safety circuits as well as minimize compressor wear and
damage. An anti-short cycle delay (ASCD) is utilized to prevent
operation of a compressor too soon after its previous run.
Additionally, a minimum run time is imposed any time a
compressor is energized to allow proper oil return to the
compressor. The ASCD is initiated on unit start-up and on any
compressor reset or lockout.
The Simplicity™ control board monitors the following inputs for
each cooling system:
• A high-pressure switch is factory installed to protect
against excessive discharge pressure due to a blocked
condenser coil or a condenser fan motor failure. During
cooling operation, if a high-pressure limit switch opens,
the Simplicity™ control board will de-energize the
associated compressors and initiate the 5-minute ASCD.
If the call for cool is still present at the end of the ASCD,
the control board will re-energize the halted compressor. If
a high-pressure switch opens three times within two hours
of operation, the Simplicity™ control board will lock out
the associated system compressors and will flash an error
code (See Table 9).
• A low-pressure switch to protect the unit against
excessively low suction pressure is standard on all
condensing units. If the low-pressure switch opens during
normal operation, the Simplicity™ control board will de-
energize the compressor, initiate the ASCD, and shut
down the condenser fans. On startup, if the low-pressure
switch opens, the Simplicity™ control board will monitor
the low-pressure switch to make sure it closes within one
minute. If it fails to close, the unit will shut down the
associated compressor and begin an ASCD. If the call for
cool is still present at the end of the anti-short cycle time
delaying, the control board will re-energize the halted
compressor. If a low-pressure switch opens three times
within one hour of operation, the Simplicity™ control
board will lock out the associated compressor and flash
an error code (See Table 9).
• An ambient air switch will lock out mechanical cooling at
40F. A field installed low ambient kit is available that
allows the unit to operate down to 0°F.
The refrigerant systems are independently monitored and
controlled. On any fault, only the associated system will be
affected by any safety/preventive action. The other refrigerant
system will continue to operate unless it is affected by the fault
as well.
Pump Out
The "Pump Out On Start Up" function is a standard feature on
the 30-50 ton matched split systems. The dual circuit indoor
evaporator refrigerant circuits include two TXV's with normally
closed solenoid valves that are utilized for the "Pump Out On
Start Up" sequence of operation. The pump out sequence is
designed to prevent liquid refrigerant flooding of the
compressors during startup.
The pump out circuit is activated each time the first and third
stage compressors (Y1, Y3) are called for from the thermostat.
The pump out circuitry does not allow the POS (pump out
solenoid) located in the liquid line just ahead of the TXVs to
open, thus not allowing refrigerant flow, or liquid refrigerant to
enter the scroll compressor during startup.
The pump out solenoid remains closed and not allowing
refrigerant flow through the system until the active refrigerant
circuit's low pressure switch opens. Once the low pressure
switch opens PS relay 1 or 2 opens the POS (Pump Out
Solenoid) and allows refrigerant to begin flowing through the
active refrigerant circuit. The active systems low pressure
switch (LPS) is ignored for approximately 1 minute while the
systems suction pressure rises above the LPS cutout point of
71 psi.
Sequence of Operation
NOTE: The timing intervals described in the following
procedures are nominal. Some variations will naturally
occur due to differences in individual components, or
due to variations in ambient temperature or line/control
voltage. Refer to the wiring labels inside of the unit
control access panel for additional information.
Continuous Blower
By setting the room thermostat to “ON,” the low voltage control
circuit from the “R” to “G” is completed and the supply air blower
will operate continuously.

1062444-YIM-A-0913
Johnson Controls Unitary Products 19
Intermittent Blower
With the room thermostat fan switch set to “AUTO” and the
system switch set to either the “AUTO” or “HEAT” settings, the
blower is energized whenever a cooling or heating operation is
requested. The blower is energized after any specified delay
associated with the operation.
When energized in cooling mode, the indoor blower has a
minimum run time of 30 seconds. Additionally, the indoor
blower has a delay of 10 seconds between operations.
Cooling Sequence Of Operation
When the thermostat calls for the first stage of cooling, the low-
voltage control circuit from the “R” to “Y1” and “G” is completed.
The Simplicity™ control board ac tivates the first stage of
cooling by energizing Compressor 1 and both condenser fans
of System 1. After completing the specified fan on delay for
cooling, the Simplicity™ contro l board will energize the indoor
blower motor.
When the thermostat calls for the second stage of cooling, the
low-voltage control circuit from “R” to “Y2” is completed. The
control board will energize Compressor 2.
If there is an initial call for both stages of cooling, the
Simplicity™ control board will delay energizing compressor two
by 30 seconds in order to avoid an excessive power rush.
When the thermostat calls for the third stage of cooling, the low-
voltage control circuit from the “R” to “Y3” is completed. The
Simplicity™ control board activates the third stage of cooling by
energizing Compressor 3 and both condenser fans of System
3.
When the thermostat calls for the fourth stage of cooling, the
low-voltage control circuit from “R” to “Y4” is completed. The
control board will energize Compressor 4.
Once the thermostat has been satisfied, the Simplicity™ control
board will de-energize Y1, Y2, Y3 and Y4. If the compressors
have satisfied their minimum run times, the compressors and
condenser fans are de-energized. Otherwise, the unit operates
each cooling stage until the ASCD has elapsed. Upon the
completion of first stage cooling, the blower is stopped following
the completion of the fan off delay cycle.
Condenser Fan Operation
These condensing units are factory equipped with fan cycling
switches to regulate system head pressure. When outdoor
ambient conditions are cool, the head pressure of any air
conditioning system may drop too low for optimal performance.
These condensing units maximize system performance in a
variety of ambient conditions by incorporating fan cycling
switches to maintain proper system head pressure.
On these condensing units, the condenser fans of a given
system are powered when compressor one is energized. Fan 1
will start immediately upon a call for first stage cooling.
However, Fan 2 is equipped with a fan cycling switch and will
not start until the system head pressure reaches 480 psig. Fan
2 will operate until the system head pressure drops below 300
psig where the fan cycling switch will shut the fan down. The
unit will continue to operate Fan 1 until the system head
pressure reaches 480 psig at which time Fan 2 will restart.
These 4-pipe condensing units can also be used with two
appropriately sized indoor units. In this case, each indoor unit
will have it’s own thermostat. One thermostat will connect to
“Y1” and “Y2” on the Simplicity™ control board and the other
will connect to “Y3” and “Y4”.
Operation With A Four-Stage Thermostat
If the total system is to be controlled with a 4-stage thermostat:
1. Terminals Y1 and Y2 of the Simplicity™ control board con -
trolling System 1, should be connected to stages 1 and 2 of
the thermostat.
COMPRESSOR #2
COMPRESSOR #1
COMPRESSOR #4
COMPRESSOR #3
2. Terminals Y3 and Y4 of the Simplicity™ control board
controlling System 2, should be connected to stages 3 and
4 of the thermostat.
Figure 11: Fan Orientation Control Box End
Figure 12: Compressor Location

FLASH CODE DESCRIPTION GREEN LED
16
RED
LED
8
RED
LED
4
RED
LED
2
RED
LED
1
This is a Control Failure
Not Applicable
Control waiting ASCD1
HPS1 Compressor Lockout
HPS2 Compressor Lockout
LPS1 Compressor Lockout
LPS2 Compressor Lockout
FS1 Compressor Lockout2
FS2 Compressor Lockout2
Compressors Locked Out on Low Outdoor Air Temperature1
Unit Locked Out due to Fan Overload Switch Failure
Compressor Held Off due to Low Voltage1
EEPROM Storage Failure
No Power or Control Failure
1062444-YIM-A-0913
20 Johnson Controls Unitary Products
Figure 13: Unit Control Board
Flash Codes
Various flash codes are utilized by the unit control board (UCB)
to aid in troubleshooting. Flash codes are distinguished by the
short on and off cycle used (approximately 200ms on and
200ms off). To show normal operation, the control board
flashes a 1 second on, 1 second off . during normal operation.
This is to verify that the UCB is functioning correctly. Do not
confuse this with an error flash code. To prevent confusion, a 1-
flash, flash code is not used.
Alarm condition codes are flashed on the UCB lower left Red
LED, See Figure 12. While the alarm code is being flashed, it
will also be shown by the other LEDs: lit continuously while the
alarm is being flashed. The total of the continuously lit LEDs
equates to the number of flashes, and is shown in the table.
Table 9: YD360 thru 600 Unit Control Board Flash Codes3
On Steady -----
1 Flash -----
2 Flashes Flashing Off Off On Off
3 Flashes Off Off Off On On
4 Flashes Off Off On Off Off
5 Flashes Off Off On Off On
6 Flashes Off Off On On Off
7 Flashes Off Off On On On
8 Flashes Off On Off Off Off
10 Flashes Flashing On Off On Off
12 Flashes Off On On Off Off
13 Flashes Flashing On On Off On
14 Flashes OffOnOnOnOff
OFF Off Off Off Off Off
1. Non-alarm condition.
2. Freeze stat not applicable.
3. Table reflects codes for one Simplicity control board. Both Simplicity controls in the 30, 40 and 50 Ton condensing units will reflect
indentical codes for each refrigerant system.
Check
Alarm
History
Reset All
ASCDs for
One Cycle
Non Alarm
Condition Green
LED Flashing
Current Alarm
Flashed
Red LED