Johnson Controls DSV60B-300B Installation Instructions Manual

MODEL DSV

AIR CONDITIONING UNITS

INSTALLATION INSTRUCTIONS Supersedes:145.29-IOM2 (812) Form 145.29-IOM2 (814)

MODEL DSV60B-300B

VERTICAL R-410A

AIR CONDITIONING UNITS

STYLE B

Issue Date:

August 25, 2014

IMPORTANT!

READ BEFORE PROCEEDING!

GENERAL SAFETY GUIDLINES

This equipment is a relatively complicated apparatus.
During installation, operation, maintenance or service,
individuals may be exposed to certain components or
conditions including, but not limited to: refrigerants
materials under pressure, rotating components, and
both high and low voltage. Each of these items has the
potential, if misused or handled improperly, to cause
bodily injury or death. It is the obligation and respon­sibilty of operating/service personnel to identify and
recognize these inherent hazards, protect themselves,
and proceed safely in completing their tasks. Failure to
comply with any of these requirements could result in
serious damage to the equipment and the property in

SAFETY SYMBOLS

The following symbols are used in this document to alert the reader to areas of potential hazard.

DANGER indicates an imminently haz­ardous situation which, if not avoided,
will result in death or serious injury.

WARNING indicates a potentially haz­ardous situation which, if not avoided,
could result in death or serious injury.

All wiring must be in accordance with published specifications and must be performed ONLY
by qualified service personnel. Johnson Controls will not be responsible for damages/problems
resulting from improper connections to the controls or application of improper control signals.
Failure to follow this will void the manufacturers warranty and cause serious damage to prop­erty or injury to persons.

, oils,

FORM 145.29-IOM2 (814)

which it is situated, as well as sever personal injury or
death to themselves and people at the site.

This document is intended for use by owner-authorized
operating/service personnel. It is expected that this
individual possesses independent training that will en­able them to perform their assigned tasks properly and
safely. It is essential that, prior to performing any task
on this equipment, this individual shall have read and
understood this document and any referenced materials.
This individual shall also be familiar with and comply with
all applicable governmental standards and regulations
pertaining to the task in question.

CAUTION identifies a hazard which
could lead to damage to the machine,
damage to other equipment and/or
environmental pollution. Usually and
instruction will be given, together with a
brief explanation.

NOTE is used to highlight additional in­formation which may be helpful to you.

2 JOHNSON CONTROLS

CHANGEABILITY OF THIS DOCUMENT

In complying with Johnson Controls policy for continu­ous product improvement, the information contained in
this document is subject to change without notice.
While Johnson Controls makes no commitment to up­date or provide current information automatically to the
manual owner, that information, if applicable, can be
obtained by contacting the nearest Johnson Controls
service office.

TABLE OF CONTENTS

Safety Symbols………………………………………………………… 2
Changeability of This Document…………………….……………….. 3

Nomenclature……………………………………….………………….. 4
Typical Installation Diagram…………………………..………………. 5
General Information……………………………………………………. 6

Pre-Installation Inspection of Equipment……………………………. 6
Installation -

Unit Mounting / Unit Weights…………..……………………………..7
Evaporator / Condenser Assembly…………….…………………… 7
Condensate Trap…..…………………………………………………. 8
Ductwork………………………………………………………………. 9

Optional Accessories -

Variable Frequency Drive (VFD)………..……………………………9
Hot Gas Bypass (HGBP)……….…………….………………………10

Air Side Economizer…………….…………….………………………10
Discharge Plenum…………….……………..……..…………………11
Low Ambient Damper…………….…………..………………………12

Blower Discharge Conversion……..………………………………....13

Electrical Wiring / Electrical Data………………………………….. 13
Fan Performance Data……………………………………………….. 15

Motor and Pulley Data / Blower Speed Adjustment…………… 19

Start-Up and Operation………………………………………………. 21

Refrigerant Charges………………………………………………. 21
Pressure Switch Settings…………………………………………. 21

Microprocessor Controller……………………………………....…… 22

Operation……………………………….………………………….. 22

Microprocessor Flash Codes…………………………………….. 24
Maintenance/Service………………………………………………… 25
Appendix A: Unit Dimensional Drawings…………………………… 26
Appendix B: Typical Service Clearances……………………………36
Appendix C: Typical Wiring Schematics…………………………… 37

R-410A Service Procedures - Quick Reference Guide…………… 47

FORM 145.29-IOM2 (814)

It is the responsibility of operating/service personnel as
to the applicability of these documents to the
equipment in question. If there is any question in the
mind of operating/service personnel as to the
applicability of these documents, then, prior to working
on the equipment, they should verify with the owner
whether the equipment has been modified and if
current literature is available.

JOHNSON CONTROLS 3

NOMENCLATURE

Product Category

DS =

Miscellaneous Options

A = None
D = Condensate Overflow Switch

Product Indentifier

V = Vertical, Free Standing Heating Options

0 = None

Nominal Capacity

060 = 5 TON Refrigerant Circuit Options
096 = 8 TON Design Series A = None
120 = 10 TON

B= Current B = Hot Gas Bypass
144 = 12 TON
180 = 15 TON
240 = 20 TON

VOLTAGE Condenser Drive Options

300 = 25TON

2 = 208/230-60-3

1 = Std Motor & Drive

4 = 460-60-3

2 = High Static Drive

5 = 575-60-3

Control Options

M = Std Microprocessor Controls Outdoor Air-side Options

A = Std Air-Side coil
C = Corrosion Protective Coating

ID Motor

1 = Std
2 = High Static Indoor Air-side Options
3 = Std cw VFD*

A = Std Air-Side coil

4 = High Static cw VFD* C = Corrosion Protective Coating

D = Stainless Steel Drain Pan
F = Coated Coil w/ S-S Drain Pan

Supply Air Discharge Configuration

V= Top Ve rtical
H=Front Horizontal

* VFD OPTION AVAILABLE ONLY ON 10 TONS AND UP

Integral Air-Cooled
Packaged A/C, R-410A

1AAMV2HDS120

B

1,2312134,5,6891071116

0

A

14

15A17

1

FORM 145.29-IOM2 (814)

4 JOHNSON CONTROLS

DSV - TYPICAL INSTALLATION DIAGRAM

FORM 145.29-IOM2 (814)

JOHNSON CONTROLS 5

FORM 145.29-IOM2 (814)

GENERAL INFORMATION

All models 8 ~ 25 tons are shipped as separate
condensing unit and evaporator section modules. The
5 ton models are shipped as factory-charged unitized
packages. All models are designed for freestanding
mounting on the floor, or on a field fabricated
structural steel stand. All models can be ordered in
either top or front fan discharge.

The 5 ton model utilizes a single compressor. All 8
through 25 ton models are dual compressor units with
two independent refrigerant circuits. The 8 ~ 25 ton
models require field connection and charging of the
refrigerant circuits. The 8 ~ 25 ton models are shipped
with a nitrogen holding charge only. Refer to ‘Start-Up
and Operation’ section for charge information.

All units come standard with a microprocessor control
board with safety controls and troubleshooting LED
(refer to ‘Microprocessor’ section).

Units will operate reliably at outdoor ambient down to
50F. In applications requiring operation below this
temperature, a low ambient damper accessory is
available. The damper installs on the condenser air
discharge, and allows operation to 0 F ambient.

ONLY QUALIFIED PERSONNEL SHOULD
PERFORM INSTALLATION AND SERVICE
OF THIS EQUIPMENT.

PRE-INSTALLATION INSPECTION OF EQUIPMENT

All units are factory tested to ensure safe operation
and quality assembly. Units are packaged and sealed
on shipping skids and shipped in first class condition.
Torn and broken packaging, scratched or dented
panels should be reported to carrier immediately.
Internal inspection of all units should be performed
prior to installation. Remove all access doors and
check for visual defects that can occur during
transport. Any problems found internally should be
reported to carrier and manufacturer immediately.
Refrigerant circuit should be checked to ensure no
leaks have occurred during shipment. Install gauge
set to high and low pressure ports to confirm pressure
has been maintained and no leaks have occurred
during shipment. Repair any damage prior to
installation to ensure safe operation.

See Appendix section for unit dimensional drawings.

Record any unit damage on the Bill of
Lading and report to carrier and factory
immediately. Shipping and handling
damages are not warranty items.

RIGGING

PRIOR TO MOUNTING UNIT, CHECK
INDIVIDUAL UNIT WEIGHTS (PAGE 10)
AND VERIFY LIFTING CAPACITY OF
LIFTING EQUIPMENT EXCEEDS WEIGHT
OF UNITS BY SAFE MARGINS. FAILURE
TO DO SO MAY RESULT IN UNIT
DAMAGE, PERSONAL INJURY OR EVEN
DEATH.

To ensure safe installation of the unit ensure the base
of the unit is continuously supported.

DETERMINE THE ACTUAL CENTER OF
GRAVITY OF THE UNIT BY PERFORM­ING A TEST LIFT. LIFTING AN UNBAL­ANCED UNIT CAN CAUSE PERSONAL
INJURY OR EVEN DEATH.

INSTALLATION SITE

LOCK ALL ELECTRICAL POWER SUP­PLY SWITCHES IN THE OFF POSITION
BEFORE INSTALLING THE UNIT. FAIL­URE TO DISCONNECT POWER SUPPLY
MAY RESULT IN ELECTRICAL SHOCK
OR EVEN DEATH.

Location - To ensure unit operates at maximum
efficiencies, choose a dry indoor area where the
temperature is controlled between 50F and 115F.
Consideration of surrounding areas should be taken
when choosing a location to install the unit. Common
vibration and sound levels associated with commercial
equipment may be objectionable to people or
equipment.

Failure to allow adequate space between
units, condenser intake and discharge
may result in poor unit performance and
possible unit failure.

Install thermostats, air supplies and returns so that
each unit will operate only on individual unit control.
To assure fast drainage of condensate run-off, unit

6 JOHNSON CONTROLS

FORM 145.29-IOM2 (814)

DSV Operating Weight (Lbs)

Unit

Operating Weight

(Condenser Only)

Shipping Weight

(Condenser Only)

DSV060B

920 (620)

980 (675)

DSV096B

1240 (810)

1290 (865)

DSV120B

1325 (860)

1385 (915)

DSV144B

1560 (980)

1645 (1035)

DSV180B

1655 (1030)

1740 (1090)

DSV240B

1875 (1210)

1960 (1270)

DSV300B

2480 (1400)

2600 (1450)

Corner Bracket

can be slightly pitched in the same direction as drain
pan outlet.

UNIT MOUNTING

The 5 ton model is shipped as a fully assembled
integral package. The 8 ~ 25 ton models are shipped
in two pieces - a separate condensing unit and
evaporator module - which are intended for assembly
into a freestanding vertical package on site. The unit
is not designed for remote condenser / evaporator
installation and must be installed as a packaged
system. Installation or modification of the unit that is
not described in this manual is not factory
recommended nor is it factory supported. User is
responsible for any damage that as a result may
occur.

Flanges for all duct connections, corner securing
brackets, and refrigerant tubing couplings are shipped
in the condensing section of the unit for field
installation. Duct flanges for evaporator return are
incorporated into the filter rack.

Floor mounted units should be secured on a solid,
level pad or sturdy stand. The base of the unit should
be approximately 6 inches higher than the lower edge
of the wall opening. This height will allow the
condenser air ducts to be pitched away from the unit,
offering protection from rain water entering the base
pan (refer to typical installation diagram on Page 4).
The use of an isolating rubber sheet is recommended
to reduce vibration and noise transmission. Ensure
that the entire base is continuously supported. Unit
may be pitched slightly to ensure efficient drainage of
condensate.

Ensure that entire base is continuously
supported. DO NOT support unit at
corner points only!

EVAPORATOR / CONDENSER ASSEMBLY
ASSEMBLY OF SPLIT UNITS (8 - 25 TON MODELS)

- Place the condensing section in the required
location.

- Carefully position the evaporator section atop the
condensing section. Align all sides, the evaporator
motor wire routing hole, and the refrigerant line
routing holes.

- Install the securing brackets at all four corners, on
the evaporator/condenser separation joint.

Securing Corner Bracket

- Units are provided with couplings to mate
refrigerant piping between condenser and
evaporator section. Unit with Hot Gas Bypass
option will be provided with additional copper
couplings for the HGBP piping. Remove shipping
bracket securing spun copper ends in the
condenser, this can be discarded and is not
required.

- Cut off spun copper ends on each refrigerant pipe
in evaporator and condenser. Cut pipe to
appropriate length to fit on couplings. Ensure
circuit 1 from condenser connects to circuit 1
piping in evaporator, follow same procedure for
circuit 2. Do not cross circuits.

- Follow common A/C service practices by brazing
copper couplings to refrigerant pipe using a flow
of nitrogen gas (max. 1 psi) through the refrigerant
piping to minimize contamination to internal
piping. Otherwise damage to unit refrigeration
components may occur. Use the service gauge
ports for this procedure to introduce nitrogen flow.
Once complete pressure test with nitrogen (500
psig).

- Evacuate each circuit to at least 350 microns. If
gauge pressure rises above 500 microns in one
minute, evacuation is incomplete or the system
has a leak.

- Charge circuit(s) to the value indicated on the unit

nameplate or see section ‘Start-Up and
Operation’.

JOHNSON CONTROLS 7

FORM 145.29-IOM2 (814)

Evaporator
connections,
couplings included
with unit

Condenser piping
for coupling to
evaporator

Condenser
Securing
Bracket

- Install bushing/clamp into evaporator wiring
routing hole, and pull wires through into electrical
control panel from evaporator. Connect motor
leads to load terminals on contactor/overload
relay.

Typical Piping Connections View (8/10 TON Model without
HGBP Shown)

Do not cross circuits when brazing
refrigerant piping between sections.

SEPARATION OF UNITS - (DSV060B MODEL)

If separation of units is required to pass through
doorways, elevators. Unit is not designed and not
certified to be installed as a remote condenser and
evaporator.

- Reclaim the entire refrigerant charge from each
compressor circuit.

- Disconnect the evaporator motor high voltage
wires. Pull all wiring into the evaporator
compartment. Remove bushing/clamp from
routing hole for evaporator motor wiring.

- Cut and remove sections of all liquid and suction
refrigerant lines. Make two cuts in each line,
approximately 6 inches above and below the
evaporator floor/condenser roof.

Use a TUBING CUTTER ONLY - do not
use a hacksaw to cut refrigerant tubing
otherwise serious damage can occur
to refrigeration system!

- Remove corner securing brackets from the
outside corners of the cabinet, at the joint line
between the evaporator and condenser sections.

- Remove the evaporator section.

- Refer to ‘Assembly of Split Units’ for assembly
instructions.

CONDENSATE TRAP

Unit requires a field installed external condensate trap
otherwise without a trap condensate can be thrown
into the air stream, cause water overflow resulting in
unit and property damage. This system must be
trapped according to a negative pressure (draw­through) system. Use dimensions given below.
Adhere to local Codes for piping external trap and
condensate.

Example: Trapping a system up to 2” External static
pressure

A= (1” for each 1” of maximum negative static
pressure)) + 1”

B= Half of A
C= A + B + Pipe Diameter

Dimensions for trapping a negative pressure system

Example: Trapping a system up to 2” External static

pressure

A= (2”) + 1” B= A/2 C= A + B + 3/4” = 5-1/4”

8 JOHNSON CONTROLS

FORM 145.29-IOM2 (814)

DUCTWORK

When installing ductwork, adhere to local Codes.
Minimize duct runs and avoid abrupt changes in
direction where possible. Allow ample access space
for servicing of the coils and changing of filters.
Perform regular maintenance on ducts to increase unit
life, maintain efficient operation, and reduce
accumulation of explosive dust. Refer to blower
performance charts, and engineer duct runs and
accessory pressure drop so as not to exceed
maximum external static values. Ensure continuous
running condenser intake ambient air temperature do
not exceed 115oF. The condenser exhaust should
discharge into an open area to prevent short cycling of
hot exhaust condenser air with the condenser intake.

Louver sizing guidelines

One of the key issues in obtaining optimum
performance from indoor air-conditioners is the proper
selection of the condenser intake and discharge
louvers. Unlike outdoor air cooled units, which intake
and discharge their cooling virtually unrestricted,
indoor units must overcome the resistance of grilles or
louvers at the outside wall - plus the restriction of any
interconnecting ductwork.

Our indoor air cooled air-conditioners are designed to
accommodate the external static pressure loss
associated with properly sized louvers of the "storm
proof” type. This type of louver typically has a free
area approximately 40-45% of the actual louver size.
To determine the free area required for any given unit,
adhere to the following guidelines:

- Size condenser air intakes for 350-600
feet/minute nominal velocity (Maximum
recommended 700 feet/minute)

- Size condenser air discharge for 1,200-1,500 feet
/minute nominal velocity (Maximum recommended
1,700 feet/minute)

The use of louvers with higher velocities than above
may be employed, at the discretion of the
engineer/installer, provided that the total air pressure
drop does not exceed the capability of the condenser
fan and motor. The use of low restriction louvers with
shallow blade angles can allow higher face velocities
without excessive static pressure loss.

Exceeding the static pressure capability of the
condenser fan will result in insufficient condenser air
volume. This will cause a loss in system capacity, and
may cause compressor shut-down during high
ambient periods. (Installation of an oversize
condenser motor/drive, where applicable, may be
considered in such cases.)

(As a general rule, these velocities will require an
intake louver sized approximately 1.25 to 1.5 times
the dimensions of the duct connection on the unit, and
a discharge louver sized approximately 1.5 to 2 times
the duct connection dimensions.)

Use only louver sections that provide different
deflection angles for air discharge and air intake,
to ensure the unit does not short circuit. Protect

the unit from weather conditions (rain, snow) entering
through the condenser air intake. All outdoor air

ducts should pitch away from the unit, toward the
outside wall. Connect all ducts to unit with canvas

section duct connectors or choose another suitable
noise and vibration absorbing device.

The Manufacturer will not accept any
liability resulting from incorrect instal­lation of this equipment. Follow instal­lation instructions carefully.

VARIABLE FREQUENCY DRIVE (VFD)

Optional VFD controller for the evaporator fan is
available on the 10 to 25 ton models. Mounted in the
in the evaporator module section, the VFD allows the
operator to set the duct static. The VFD will control the
frequency (speed) of the evaporator fan motor in order
to meet the desired supply duct static set point. For
reliable unit operation unit must have a factory
installed Hot Gas Bypass circuit on refrigeration circuit
# 1.

The unit does not carry a failsafe
circuit to bypass the VFD and run
the evaporator fan in the event of a
VFD malfunction.

VFD is factory mounted and wired. The installer must
field provide and install two sensor tubing lines
complete with static pressure probes. Installer is
required to field wire fan power wiring between
evaporator and condenser as a result of the unit being
shipped factory split. The power wiring can be found
inside the VFD enclosure, no extra power wiring is
required – sufficient length is provided. The VFD
option does not include a evaporator fan bypass
circuit in case of microdrive failure. Microdrive will
need to be replaced to re-activate unit. In case of
VFD failure the evaporator fan will stop running
however unit compressors will continue to run until a
low pressure safety trip is activated.

JOHNSON CONTROLS 9

FORM 145.29-IOM2 (814)

Jumper set
to 4-20mA

4-20mA Output from
Transducer (–COM)

Transducer
Power (+EXC)

Refer to separate ‘VFD Installation and Operation
Manual’ for detailed installation and operation

instructions.

Do not run evaporator fan motor
below 30Hz otherwise coil freeze-up
and nuisance lock-outs may occur.

Building excessive ductwork
pressure can cause damage to unit
or personnel

VFD Input/Output

Note: Jumper is required between contacts 10 & 11

HOT GAS BYPASS (HGBP)

Optional HGBP on the lead compressor circuit (circuit
#1) meters flow of compressor discharge hot gas to
the system low side in order to balance the system
capacity to the space load requirement. HGBP is
factory installed using an adjustable hot gas regulator.
The bypassed hot gas from the compressor is
discharged to the evaporator inlet (i.e.: between the
TX valve and distributor) via a Tee connection.

Adjusting HGBP set point

The desired coil suction pressure or coil temperature
when the HGBP valve opens is selectable by
adjusting the screw on the HGBP valve. To set the
load run the unit and cool down the evaporator coil by
either shutting the fans or by blocking the airflow until
the suction pressure drops at least 5psi below the
desired evaporator coil setpoint. The next step is to
allow the pressure to be raised by the bypassed gas,
the screw spring adjustment can be set until the
HGBP valve closes at the desired set point.

The pressure of the evaporator coil is set to maintain
an evaporator coil temperature above the point where
frost and coil freeze up could form.

AIR SIDE ECONOMIZER

Optional air side economizer mixing box is designed
to attach the return air side of the evaporator. Mixing
comes with low-leakage opposed blade dampers.
Economizer is used to provide ventilation and free
cooling for the JCI DSV series of vertical air handlers.

Economizer setup is done through the LCD keypad
display locating on the economizer control module
mounted on the mixing box. Access to the mixing box
is required.

The factory supplied economizer includes:
economizer module, mixing box, actuator, enthalpy
sensor, temperature sensor, dampers, and wiring
harness. Refer to Appendix C for economizer
electrical wiring schematics.

SEQUENCE OF OPERATION
High enthalpy sequence

Enthalpy sensor should be located in the outdoor air
duct. When the outside air enthalpy exceeds the
enthalpy set-point, the economizer module Y1-In and
Y1-Out terminals are closed and economizer will be
forced into the minimum damper position setting. The

DSV unit’s microprocessor board will control

mechanical cooling requirements.

Low enthalpy sequence

When the outside air enthalpy is below the enthalpy
set-point, economizer module Y1-In and Y1-Out
terminals are opened and free cooling is activated.

The JCI unit’s microprocessor board turns off

compressor operation.

Damper Modulation

The temperature sensor should be located in the
supply discharge air duct. Locating the sensor in the
discharge air provides effective 'low-limit' sensing and
control. The outside-air damper remains at minimum
position if the discharge air temperature is below 500 F
or 100 C. If the discharge air temperature is between
500 to 560 F (100 to 13.30 C) the outside air damper
will modulate between minimum position and fully
open. Above 560 F (13.30 C) the outside air damper
will remain in the fully open position.

10 JOHNSON CONTROLS

FORM 145.29-IOM2 (814)

Plenum Dimensions (Inches)

MODEL

W

D

H

Side Grille

Front Grille

DSV060B

52

29

24

16x12 (2x)

32x12

DSV096B

71.5

32

24

20x18 (2x)

48x18

DSV120B

71.5

32

24

20x18 (2x)

48x18

Plenum Dimensions (Inches)

MODEL

W

D

H

Side Grille

Front Grille

DSV144B

82.5

34

28

24x20 (2x)

28x20 (2x)

DSV180B

82.5

34

28

24x20 (2x)

28x20 (2x)

DSV240B

90.5

34

28

24x20 (2x)

32x20 (2x)

A B C D E

DSV060B VASE-060B-1 49.00 27.75 24.00 40.00 14.00
DSV096B/120B VASE-120B-1 66.50 36.25 26.50 58.00 19.50
DSV144B/180B VASE-180B-1 78.00 35.75 28.50 70.00 19.50

DSV240B VASE-240B-1 86.00 41.25 34.00 78.00 25.00

DSV300B VASE-300B-1 104.00 45.00 34.00 90.00 25.00

MODEL

PART NO.

MIXING BOX

DAMPER

1

FINISHED PRODUCTS

SPOT WELD WELD

INSULATE

PAINTING

NONONONO

6.75

3.625

EDB

TOP VIEW

FRONT VIEW

4

(vertical) discharge evaporator blower configuration.
Discharge plenum for 5 – 10 Ton model comes with
single front grille and single side grilles. The 12 – 20
Ton models come with double front grilles and single
side grilles.

Discharge plenum is constructed of heavy gauge
sheet metal with supply grilles mounted on three side
(front, left and right sides). Discharge plenum is
secured to the unit using 4X corner brackets included
with plenum.

Refer to separate ‘Air Side Economizer Installation
and Operation Manual’ for more detailed installation

and operation instructions.

DISCHARGE PLENUM

Optional discharge plenum is available for field
mounting to the top of evaporator for the 5-20 ton
models. Discharge plenum is only compatible with top

JOHNSON CONTROLS 11

FORM 145.29-IOM2 (814)

MODEL PART NO. A B C

DSV060B VADK-060B-1 47.375" 5.0" 11.875"

DSV096B/120B VADK-120B-1 66.375" 5.0" 14.125"
DSV144B/180B VADK-180B-1 77.5" 5.0" 14.125"

DSV240B VADK-240B-1 85.5" 5.0" 12.875"

DSV300B VADK-300B-1 103.5" 5.0" 12.875"

LOW AMBIENT DAMPER INSTALLATION

If unit operation is required at outdoor ambient below
50 F, the optional Low Ambient Damper kit should be
installed to maintain acceptable condensing pressure.

The damper is installed directly onto the intake duct
connection as illustrated. The damper position is
determined by refrigerant pressure. A direct-coupled
electric damper actuator motor drives the damper
open or closed, depending on the output signal from a
proportional pressure control module. A pressure
transducer senses the high-side refrigerant pressure,
through a service access port, located on the liquid
refrigerant line leaving the condenser. The pressure
controller, complete with terminal connection blocks
for wiring, is attached to a field-installed mounting
bracket. Appropriate mounting hardware for the
pressure control module and the damper actuator
motor are provided with the kit. A routing hole is
provided in the condenser corner panel, near the
actuator mounting location, to allow installation of the
plenum-rated cable between the motor and the control
module.

12 JOHNSON CONTROLS

On dual compressor units, the pressure
transducer MUST be connected to the #1
circuit liquid line fitting. Connection to
the second stage refrigerant circuit will
result in system malfunction.

For detailed installation instructions, refer to the

supplementary ‘Low Ambient Damper Kit’

installation instructions.

FORM 145.29-IOM2 (814)

EVAPORATOR BLOWER DISCHARGE
CONVERSION

All models can be factory ordered with either front or
top fan discharge.

Procedure for converting the fan discharge is similar
on all models. Original drive belts will need to be
replaced, see ‘Drive Belt’ section for alternate belt
information.

- Remove the panel attachment screws on the
alternate location access panel. Remove the
panel and set aside.

- Remove blower drive belt on all models with
base mounted motors.

- Remove the panel attachments screws on the
blower mounting panel. Do not remove fasteners
securing blowers to panel! The blowers are to
remain attached to the mounting panel at all
times.

- Carefully remove the blower panel assembly
from the evaporator cabinet. Do not allow blower
housings to contact the evaporator coil during the
removal. On some models, the housing(s) will
have to be "rotated" to exit through the panel
opening.

- Interchange the blower panel assembly with the
position of the alternate access panel. Exercise
care in locating the panel. Do not allow blower
housings to contact the evaporator coil. Install
the attachment screws and tighten securely.

- Install the blank access panel into the remaining
evaporator opening. Fasten securely.

- Install new drive belts.

- Adjust drive belts to appropriate tension. Test run

blower and observe operation for unusual
sounds or vibration.

ELECTRICAL WIRING

Follow local electrical codes when making electrical
connections. Units are completely factory wired for
normal supply voltages (ie.208-230, 460,
575V/3Ph/60Hz) Confirm unit specifications by
checking unit data plate. All electrical components are
accessible through an independent electrical panel
located on the "front" face of the condensing section.
The electrical control boxes are located behind outer
access panels. The condenser section electrical cover
is installed with wiring diagrams on the inside, which
must be opened to be read.

Ensure evaporator motor rotation is
correct upon unit start-up. Switch any
two wires at contactor if blower rotation
is not correct.

DISCONNECT AND LOCK OUT POWER
WHEN SERVICING UNIT. UNIT MAY
START AUTOMATICALLY IF POWER IS
NOT DISCONNECTED. FAILURE TO DO
SO MAY RESULT IN PERSONAL IN­JURY OR DEATH DUE TO ELECTRICAL
SHOCK.

If canvas flexible joints are used on ductwork, install a
ground wire to the ductwork as well.

IMPORTANT: All wiring must comply
with applicable local and national codes
(NEC). Type and location of disconnect
switches must comply with all
applicable codes.

For low voltage thermostat wiring, 18 gauge wire may
be used for up to 50 feet lengths. Low voltage runs up
to 125 feet require 16 gauge wire.

JOHNSON CONTROLS 13

FORM 145.29-IOM2 (814)

ELECTRICAL DATA - STANDARD EVAPORATOR MOTOR

MODEL #

VOLTAGE

COMPRESSOR

EVAP.

FAN

COND. FAN

MCA

MAX FUSE

/ CCT.

BKR. AMP

QTY RLA

LRA

HP

FLA

HP

FLA

DSV060B2

208-230/3/60

1 @ 16.0

110.0

1.00

3.1

1.50

4.5

27.60

40

DSV060B4

460/3/60

1 @ 7.8

52.0

1.00

1.5

1.50

2.2

13.45

20

DSV060B5

575/3/60

1 @ 5.7

38.9

1.00

1.2

1.50

1.8

10.13

15

DSV096B2

208-230/3/60

2 @ 15.3

83.0

1.00

3.1

2.00

5.8

43.33

50

DSV096B4

460/3/60

2 @ 6.2

41.0

1.00

1.5

2.00

2.9

18.35

20

DSV096B5

575/3/60

2 @ 4.8

33.0

1.00

1.2

2.00

2.3

14.30

15

DSV120B2

208-230/3/60

2 @ 16.0

110.0

1.50

4.5

3.00

8.5

49.00

60

DSV120B4

460/3/60

2 @ 7.8

52.0

1.50

2.2

3.00

4.2

23.95

30

DSV120B5

575/3/60

2 @ 5.7

38.9

1.50

1.8

3.00

3.4

18.03

20

DSV144B2

208-230/3/60

2 @ 19.0

123.0

2.00

5.8

3.00

8.5

57.05

70

DSV144B4

460/3/60

2 @ 9.7

62.0

2.00

2.9

3.00

4.2

28.93

35

DSV144B5

575/3/60

2 @ 7.4

50.0

2.00

2.3

3.00

3.4

22.35

25

DSV180B2

208-230/3/60

2 @ 23.2

164.0

3.00

8.5

5.00

14.0

74.70

90

DSV180B4

460/3/60

2 @ 11.2

75.0

3.00

4.2

5.00

6.6

36.00

45

DSV180B5

575/3/60

2 @ 7.9

54.0

3.00

3.4

5.00

5.3

26.48

30

DSV240B2

208-230/3/60

2 @ 30.1

225.0

5.00

14.0

7.50

19.4

101.13

125

DSV240B4

460/3/60

2 @ 16.7

114.0

5.00

6.6

7.50

9.7

53.88

70

DSV240B5

575/3/60

2 @ 12.2

80.0

5.00

5.3

7.50

7.8

40.55

50

DSV300B2

208-230/3/60

2 @ 34.0

240.0

7.50

20.4

10.00

25.0

121.90

150

DSV300B4

460/3/60

2 @ 16.0

140.0

7.50

9.7

10.00

12.5

58.20

70

DSV300B5

575/3/60

2 @ 12.9

107.6

7.50

7.8

10.00

10.0

46.83

50

ELECTRICAL DATA - OVERSIZED EVAPORATOR MOTOR

MODEL #

VOLTAGE

COMPRESSOR

EVAP.

FAN

COND. FAN

MCA

MAX FUSE

/ CCT.

BKR. AMP

QTY RLA

LRA

HP

FLA

HP

FLA

DSV060B2

208-230/3/60

1 @ 16.0

110.0

1.50

4.5

1.50

4.5

29.00

45

DSV060B4

460/3/60

1 @ 7.8

52.0

1.50

2.2

1.50

2.2

14.15

20

DSV060B5

575/3/60

1 @ 5.7

38.9

1.50

1.8

1.50

1.8

10.73

15

DSV096B2

208-230/3/60

2 @ 15.3

83.0

1.50

4.5

2.00

5.8

44.73

60

DSV096B4

460/3/60

2 @ 6.2

41.0

1.50

2.2

2.00

2.9

19.05

25

DSV096B5

575/3/60

2 @ 4.8

33.0

1.50

1.8

2.00

2.3

14.90

15

DSV120B2

208-230/3/60

2 @ 16.0

110.0

2.00

5.8

3.00

8.5

50.30

60

DSV120B4

460/3/60

2 @ 7.8

52.0

2.00

2.9

3.00

4.2

24.65

30

DSV120B5

575/3/60

2 @ 5.7

38.9

2.00

2.3

3.00

3.4

18.53

20

DSV144B2

208-230/3/60

2 @ 19.0

123.0

3.00

8.5

3.00

8.5

59.75

70

DSV144B4

460/3/60

2 @ 9.7

62.0

3.00

4.2

3.00

4.2

30.23

35

DSV144B5

575/3/60

2 @ 7.4

50.0

3.00

3.4

3.00

3.4

23.45

30

DSV180B2

208-230/3/60

2 @ 23.2

164.0

5.00

14.0

5.00

14.0

80.20

100

DSV180B4

460/3/60

2 @ 11.2

75.0

5.00

6.6

5.00

6.6

38.40

45

DSV180B5

575/3/60

2 @ 7.9

54.0

5.00

5.3

5.00

5.3

28.38

35

DSV240B2

208-230/3/60

2 @ 30.1

225.0

7.50

20.4

7.50

20.4

108.53

125

DSV240B4

460/3/60

2 @ 16.7

114.0

7.50

9.7

7.50

9.7

56.98

70

DSV240B5

575/3/60

2 @ 12.2

80.0

7.50

7.8

7.50

7.8

43.05

50

14 JOHNSON CONTROLS

FAN PERFORMANCE

SUPPLY AI R BLOWER PERFORMANCE

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

1600 408 0.13 555 0.29 652 0.38 739 0.45 819 0.54 893 0.63 963 0.71 1029 0.81

1800 459 0.20 600 0.39 689 0.48 770 0.58 846 0.66 917 0.76 984 0.86 1047 0.96

2000 510 0.25 647 0.51 729 0.61 806 0.71 877 0.81 944 0.92 1008 1.00 1069 1.14

2200 561 0.35 695 0.65 772 0.76 843 0.88 911 0.99 975 1.10 1036 1.23 1094 1.34

2400 612 0.45 745 0.83 816 0.95 883 1.07 947 1.19 1008 1.31 1066 1.44 ~ ~

1. Blower performance includes evaporator coil and 2" filters

2. At higher evaporator airflows and wet bulb conditions, condensate carry-over may occur. Decrease airflow downward as necessary.

CONDENSER FAN PERFORMANCE

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

3100 513 0.50 615 0.65 706 0.80 790 0.98 867 1.15 938 1.33 1006 1.50

Hi-Static Drive

Standard Factory Drive 1.5 HP

SUPPLY

CFM

0.2

0.4

0.6

0.8

1.0

1.2

1.4

0.0

AVAILABLE EXTERNAL STATIC PRESSURE - Inches W.C. ¹

Optional Hi-Static Drive +1 .5 HP

OUTDOOR

CFM

AVAILABLE EXTERNAL STATIC PRESSURE - Inches W.C.

0.0

0.2

0.4

0.6

0.8

1.0

1.2

Standard Factory Drive + 1 HP

Field Supplied Low Static

Drive

SUPPLY AI R BLOWER PERFORMANCE

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

2600 496 0.28 605 0.40 701 0 .50 788 0.62 868 0.74 947 0.89 1016 1.04 1045 1.19 1075 1.35 1105 1.50

2900 514 0.36 618 0.48 710 0 .60 794 0.72 872 0.86 944 0.98 1017 1.12 1075 1.28 1128 1.42 ~ ~

3200 538 0.44 636 0.58 725 0 .70 806 0.84 881 0.98 952 1.12 1018 1.26 1081 1.42 ~ ~ ~ ~

3500 571 0.56 664 0.70 748 0 .84 826 0.98 898 1.14 967 1.28 1031 1.44 ~ ~ ~ ~ ~ ~

3800 613 0.70 700 0.86 779 1 .00 853 1.16 923 1.32 989 1.48 ~ ~ ~ ~ ~ ~ ~ ~

1. Blower performance includes evaporator coil and 2" filters

2. At higher evaporator airflows and wet bulb conditions, condensate carry-over may occur. Decrease airflow downward as necessary.

CONDENSER FAN PERFORMANCE

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

4400 478 0.60 560 0.78 634 0 .96 702 1.14 765 1.34 824 1.54 880 1.74

Standard Factory Drive + 2 HP

Optional Hi-Static Drive + 2 HP

OUTDOOR

CFM

AVAILABLE EXTERNAL STATIC PRESSURE - Inches W.C.

0.0

0.2

0.4

0.6

0.8

1.0

1.2

Optional Hi-Static Drive + 1.5 HP

Standard Factory Drive + 1 HP

Low Static

Drive

SUPPLY

CFM

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

AVAILABLE EXTERNAL STATIC PRESSURE - Inches W.C. ¹

DSV060B

FORM 145.29-IOM2 (814)

DSV096B

JOHNSON CONTROLS 15