Johnson Controls DSH Series User manual

LOW-AMBIENT KIT
MODELS DSH/DSV
R-410A AIR CONDITIONING UNITS
B STyLE
INDOOR pACKAGED EqUIpMENT
INSTALLATION INSTRUCTIONS Supercedes 145.10-IOM2 (910) Form 145.10-IOM2 (414)
Issue Date:
April 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, rotati
ng 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 respon
sibilty of operating/service personnel to identify and
recognize these i
nherent 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 haz
ardous situation which, if not avoided,
will result in death or serious injury.
WARNING indicates a potentially haz
ardous 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.
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
, oils,
ng 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 respon
-
sibilty of operating/service personnel to identify and
nherent 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
which it is situated, as well as sever personal injury o
death to themselves and people at the site.
This document is intended for use by owner
operating/service personnel. It is expected that this
individual possesses independent training that will en
able them to perform their assigned tasks pro
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 go
vernmental standards and regulations
pertaining to the task in question.
SAFETY SYMBOLS
The following symbols are used in this document to alert the reader to areas of potential hazard.
DANGER indicates an imminently haz
-
ardous situation which, if not avoided,
will result in death or serious injury.
WARNING indicates a potentially haz
-
ardous situation which, if not avoided,
could result in death or serious injury.
CAUTION iden
tifies 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 in
formation which may
be helpful to you.
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
improper connections to the controls or application of improper control signals.
this will void the manufacturers’ warranty and cause serious damage to property
which it is situated, as well as sever personal injury o
r
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 en
-
able them to perform their assigned tasks pro
perly 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
vernmental standards and regulations
The following symbols are used in this document to alert the reader to areas of potential hazard.
tifies 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
NOTE is used to highlight additional in
-
be helpful to you.
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
improper connections to the controls or application of improper control signals.
this will void the manufacturers’ warranty and cause serious damage to property

CHANGEABILITY OF THIS
In complying with John
son Controls policy for
continu
ous product improvement, the information
contained in this document is subject to change
without notice. While Johnson Controls m
commitment to up-
date or provide current
information automatically to the manual owner, that
information, if applicable, can be obtained by
contacting the nearest Johnson Controls service
office.
3
……
4
..….
6
……
7
……
8
……
10
……
11
……
13
……
14
……
Before installing this accessory kit, turn off electrical
could result in electrical shock, resulting in component damage, injury or death.
GENERAL INFORMATION
If unit operation is required at outdoor ambient below
to maintain acceptable condensing pressure.
In horizontal units, t
he damper is installed directly
over the exhaust duct connection
. The damper
damper actuator motor drives the damper open or closed, depending on the output signal from a proportio
control module
. A pressure transducer sens
on the liquid refrigerant line leaving the condenser. The pressure controller
for wiring, is attached to a field-
installed
module and the damper actuator
motor
panel,
near the actuator mounting location
control module.
On Dual compressor units, the transducer
circuit liquid line fitting. Connection to the second stage refrigerant circuit will
result in system malfunction.
3
CHANGEABILITY OF THIS
DOCUMENT
son Controls policy for
ous product improvement, the information
contained in this document is subject to change
without notice. While Johnson Controls m
akes no
date or provide current
information automatically to the manual owner, that
information, if applicable, can be obtained by
contacting the nearest Johnson Controls service
It is the responsibility of operating/service person
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
th
e owner whether the equipment has been modified
and if current literature is available.
TABLE OF CONTENTS
……
General Information
..….
.Damper Installation
……
Pressure Control Panel Installation
……
Pressure Transducer Installation
……
Damper Actuator Installation & Wiring
……
Actuator Rotation Verification
……
Interconnection Drawings
……
Sequence of Operation
……
Damper Schematics
Before installing this accessory kit, turn off electrical
power to the equipment. Failure to do so
could result in electrical shock, resulting in component damage, injury or death.
If unit operation is required at outdoor ambient below
45
deg F, the optional Low Ambient Damper kit should be installed
to maintain acceptable condensing pressure.
he damper is installed directly
over the intake duct connection. I
n vertical units
. The damper
position is determined by
refrigerant pressure.
damper actuator motor drives the damper open or closed, depending on the output signal from a proportio
. A pressure transducer sens
es 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
installed
mounting bracket.
Appropriate mounting hardware for the
motor
are provided with the
kit. A routing hole is provided in the condenser corner
near the actuator mounting location
, to allow installation of the plenum-
rated cable between the motor and the
On Dual compressor units, the transducer
MUST
be connected to the #1
circuit liquid line fitting. Connection to the second stage refrigerant circuit will
result in system malfunction.
It is the responsibility of operating/service person
nel
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
e owner whether the equipment has been modified
and if current literature is available.
power to the equipment. Failure to do so
could result in electrical shock, resulting in component damage, injury or death.
deg F, the optional Low Ambient Damper kit should be installed
n vertical units
damper is installed
refrigerant pressure.
A direct-coupled electric
damper actuator motor drives the damper open or closed, depending on the output signal from a proportio
nal pressure
side refrigerant pressure, through a service access port, located
, complete with terminal connection blocks
Appropriate mounting hardware for the
pressure control
kit. A routing hole is provided in the condenser corner
rated cable between the motor and the
be connected to the #1
circuit liquid line fitting. Connection to the second stage refrigerant circuit will

PRIOR TO SECURING DAMPER TO THE UNIT ENSURE DAMPER BLADES
WHEN FULLY OPEN
DO NOT INTERFERE WITH
When
installing the transducer, observe all regulations governing the
handling and containment of hazardous or regulated materials (refrigerants or
lubricants).
DAMPER INSTALLATION
FOR ALL DAMPERS:
shipping damage,
damper rod is
recessed inside damper
be pulled out. Loosen
indicated
and slide damper rod out
approx. 3.5”
from damper. Once in
rod is in place tighten
all 4 nuts
HORIZONTAL UNITS (DSH**B
SERIES)
1)
The kit contains two long flanges, which reduce the intake opening height
Attach these flanges using the original holes and screws.
2) Re-
attach one of the original vertical flanges as close to the edge of the corner post as possible (approx 1/8”
from edge of corner).
3)
Position the damper casing between the two horizontal flanges surface, and butt the drive end of the damper
against the vertical flange at the corner of the unit.
at the top of unit.
4) Position dam
per blades to fully open and check that there is no interference with unit!
contact the unit, adjust damper slightly away from unit.
5) Secure the damper using the self-
drilling screws provided (drive screws the holes in the flanges, into
damper casing).
6)
Attach the remaining vertical flange, opposite the drive end of the casing.
7)
Ensure that the damper assembly rotates freely, with little or no resistance, by rotating the drive shaft by hand.
b) Slide Out Damper
a) Loosen x4 nuts
4
PRIOR TO SECURING DAMPER TO THE UNIT ENSURE DAMPER BLADES
DO NOT INTERFERE WITH
UNIT!
installing the transducer, observe all regulations governing the
handling and containment of hazardous or regulated materials (refrigerants or
To avoid
damper rod is
recessed inside damper
and must
the 4 nuts
and slide damper rod out
from damper. Once in
all 4 nuts
.
SERIES)
The kit contains two long flanges, which reduce the intake opening height
to match the damper dimensions.
Attach these flanges using the original holes and screws.
attach one of the original vertical flanges as close to the edge of the corner post as possible (approx 1/8”
Position the damper casing between the two horizontal flanges surface, and butt the drive end of the damper
against the vertical flange at the corner of the unit.
Ensure that the damper is orientated as shown
per blades to fully open and check that there is no interference with unit!
If the damper blades
contact the unit, adjust damper slightly away from unit.
drilling screws provided (drive screws the holes in the flanges, into
Attach the remaining vertical flange, opposite the drive end of the casing.
Ensure that the damper assembly rotates freely, with little or no resistance, by rotating the drive shaft by hand.
b) Slide Out Damper
a) Loosen x4 nuts
PRIOR TO SECURING DAMPER TO THE UNIT ENSURE DAMPER BLADES
installing the transducer, observe all regulations governing the
handling and containment of hazardous or regulated materials (refrigerants or
to match the damper dimensions.
attach one of the original vertical flanges as close to the edge of the corner post as possible (approx 1/8”
Position the damper casing between the two horizontal flanges surface, and butt the drive end of the damper
Ensure that the damper is orientated as shown
– drive shaft
If the damper blades
drilling screws provided (drive screws the holes in the flanges, into
the metal
Ensure that the damper assembly rotates freely, with little or no resistance, by rotating the drive shaft by hand.
c) Slide Damper
R
od Out 3.5”
d) Tighten x4 Nuts

5
VERTICAL UNITS (DSV**B SERIES)
1) The kit includes two vertical and two horizontal factory supplied duct flanges.
2) Locate pilot holes at condenser exhaust and line up duct flanges accordingly.
3) Secure flanges using self-drilling sheet metal screws. The horizontal flanges should be flush with the
condenser exhaust opening.
4) Position the damper inside the flanges and secure with screws.
5) Position damper blades to fully open and check that there is no interference with unit! If the damper blades
contact the unit, adjust damper slightly away from unit.
6) Secure the damper using the self-drilling screws provided (drive screws the holes in the flanges, into the metal
damper casing).
7) Attach the remaining vertical flange, opposite the drive end of the casing.
8) Ensure that the damper assembly rotates freely, with little or no resistance, by rotating the drive shaft by hand.
        
      
         
     
        
   ! 
        
    "  # 
 $ % % & '
 
   $  
 
Ensure damper blades
when fully open do not
contact unit
Ensure damper blades
when fully open do not
contact unit

6
PRESSURE CONTROL PANEL INSTALLATION &
WIRING
1) The Pressure Control Panel is intended for
mounting, to the interior base pan in horizontal
units and on the base rails in vertical units, in the
compressor/condenser section, immediately
behind the compressor side access panel (see
photo). Fasten the panel bracket to the vertical
flange of the interior base pan (recommended) or
to the horizontal surface of the pan, using the
provided self-drilling screws.
2) The kit contains a pre-terminated two-wire harness
(red and white) to connect the Connect Control
Panel to the Microprocessor board R and C
terminals, located in the main electrical panel of the
condensing unit. The harness must be fed through
the electrical routing hole, for horizontal units at the
intake end of the condenser coil, and for vertical
units at the low voltage end of the electrical panel
(see photos).
3) Route the harness across the blower section of the
unit, for horizontal units - into the back of the
electrical panel via the low voltage entrance hole.
Secure the harness, using the self-adhesive
mounts provided, to ensure that the wiring is kept
well clear of the belt driven blower and motor
assembly.
4) The red harness lead is to be connected to the ‘R’
terminal; the white harness lead is to be connected
to the ‘C’ terminal (refer to Lo-Ambient Control
inter-connection drawing) on the Microprocessor
board.
5) Within the compressor compartment, secure the
harness to the existing compressor wiring, and
route the terminated ends to the 2-pole terminal
block on the Pressure Control Panel. Attach the
terminated harness ends to the appropriate
terminals (red-to-red, and white-to-white).
HORIZONTAL WIRING

7
VERTICAL WIRING
PRESSURE TRANSDUCER INSTALLATION
1) The compact ‘P499’ transducer mounts directly to
the liquid refrigerant pressure port. This port is
incorporated into the refrigerant shut-off valve (as
illustrated in DSH single stage units on page 6).
2) Hand thread the transducer onto the pressure port.
(Wear a glove for protection, and seat the
transducer as quickly as possible to minimize
release of liquid refrigerant.
3) Tighten the connection using the wrench flats
provided to avoid damaging the transducer.
4) The connecting harness for the pressure
transducer is pre-wired to the Pressure Control
Panel. The sensor end of the harness is equipped
with a polarized plug connection. Insert the plug
into the end of the transducer, ensuring that the
locking tab on the plug is engaged.
5) Perform a leak test on the refrigerant port
connection before putting the system into
operation.

DAMPER ACTUATOR INSTALLATION
&
1)
Press and hold the gear release lever, and
rotate the drive coupler to the fully clockwise
position. Release the gear lever.
2)
Fully close the damper, by turning the drive
shaft clockwise.
3) Insert the tab on the anti-
rotation bracket into
the
slot at the bottom of the actuator, and slide
the actuator onto the damper drive shaft.
4) Position the anti-
rotation bracket at the
indicated dimension below the drive shaft
center (6-3/16 in.).
5) Use the holes in the anti-
rotation bracket as a
guide and secur
e the bracket to the damper
casing, using the self-
drilling screws provided.
(Do not drive screws near the center of the
damper casing. Use the outermost holes in the
anti-rotation bracket.)
6) Adjust the anti-
rotation bracket, as necessary,
to position the tab mid-
way into the slot at the
bottom of the actuator.
The tab on the anti
bracket must fit midpoint in the
actuator slot to prevent actuator
binding and premature wear.
8
&
WIRING
Press and hold the gear release lever, and
rotate the drive coupler to the fully clockwise
Fully close the damper, by turning the drive
rotation bracket into
slot at the bottom of the actuator, and slide
the actuator onto the damper drive shaft.
rotation bracket at the
indicated dimension below the drive shaft
rotation bracket as a
e the bracket to the damper
drilling screws provided.
(Do not drive screws near the center of the
damper casing. Use the outermost holes in the
rotation bracket, as necessary,
way into the slot at the
The tab on the anti
-rotation
bracket must fit midpoint in the
actuator slot to prevent actuator
binding and premature wear.
7)
Hold the actuator in place, and evenly hand
tighten each clamp nut onto the U
that the damper drive shaft remains in the fully
closed position, while tightening the clamp
nuts. Secure the U-
bolt to the damper shaft.
8)
Press and hold the gear re
coupler and drive shaft from fully closed to fully
open to verify that the damper and actuator
rotate freely throughout the range.
9)
Loosen the actuator cover screw (No. 1
Phillips), and remove the actuator cover. Push
the plastic plug, ad
jacent to the
terminal block, out of the conduit opening.
10)
Use the Phillips screwdriver to punch the
center hole through the plug, and reinsert the
plug into the opening.
11) A plenum-
rated connection cable is provided,
pre-
wired to the Pressure Control Panel, for
supply of 24 VAC power and 0
voltage. The cable is routed to the actuator
through a 7/8 knock-
out in the unit corner post.
12) Remove the knock-
out, and in
bushing provided in the kit. Pull a sufficient
length of cable through the bushing, to reach
the connection terminal block at the bottom of
the actuator.
13)
Push the cable through the hole in the plastic
conduit plug (enlarge if necessary),
approximately 1-
inch of the outer cable sheath,
and connect
wires as follows: WHITE =
Terminal 1;
RED = Terminal 2; BLACK =
Terminal 5
. (Green cable wire is not used.)
14) Secure the
cable with a large nylon wire
(provided), to prevent the cable fr
accidentally pulled from the actuator housing
(see photo).
15) Verify
M9108 is configured correctly for
either
CW or CCW rotation.
page,
‘ACTUATOR ROTATION’
location and configuration table
Jumper W1 is factory set for
rotation.
Hold the actuator in place, and evenly hand
tighten each clamp nut onto the U
-bolt. Ensure
that the damper drive shaft remains in the fully
closed position, while tightening the clamp
bolt to the damper shaft.
Press and hold the gear re
lease. Rotate the
coupler and drive shaft from fully closed to fully
open to verify that the damper and actuator
rotate freely throughout the range.
Loosen the actuator cover screw (No. 1
Phillips), and remove the actuator cover. Push
jacent to the
actuator
terminal block, out of the conduit opening.
Use the Phillips screwdriver to punch the
center hole through the plug, and reinsert the
rated connection cable is provided,
wired to the Pressure Control Panel, for
supply of 24 VAC power and 0
-10 VDC signal
voltage. The cable is routed to the actuator
out in the unit corner post.
out, and in
sert the plastic
bushing provided in the kit. Pull a sufficient
length of cable through the bushing, to reach
the connection terminal block at the bottom of
Push the cable through the hole in the plastic
conduit plug (enlarge if necessary),
strip
inch of the outer cable sheath,
wires as follows: WHITE =
RED = Terminal 2; BLACK =
. (Green cable wire is not used.)
cable with a large nylon wire
-tie
(provided), to prevent the cable fr
om being
accidentally pulled from the actuator housing
M9108 is configured correctly for
CW or CCW rotation.
See following
‘ACTUATOR ROTATION’
for jumper
location and configuration table
.
Jumper W1 is factory set for
CW

9
16) Reattach the actuator cover, and tighten the
cover screw.
17) Using the cable routing hardware provided,
secure the cable to avoid accidental damage,
or contact with moving components.
18) Check that damper blades can fully open
without contacting unit. Reposition damper
slightly away from unit if damper blades are
unable to fully open.
ACTUATOR ROTATION – VERIFYING JUMPER
W1 SETPOINT
MODEL # JUMPER W1
SETTING
DSH024B-DSH060B RA (CCW)
DSH096B-DSH120B DA (CW)
DSV060B-DSV 00B RA (CCW)

10
SINGLE STAGE WIRING INTERCONNECTION DRAWING
Single compressor application is shown. This applies to DSH024B-DSH060B, and DSV060B models.

11
DUAL STAGE WIRING INTERCONNECTION DRAWING
Dual compressor application is shown. This applies to DSH096B, DSH120B and DSV096B-DSV300B models.

12
SEQUENCE OF OPERATION – FUNCTIONAL
CHECK
This condensing pressure control package is designed
to maintain a minimum refrigerant liquid pressure of
260 psig, which is sufficient to ensure proper expansion
valve operation under all normal conditions. The
electronic proportional control module generates a 0 to
10 VDC output signal, based on sensed pressure. This
output signal is employed to modulate the condenser
air volume, from 0% to 100%, via an electrically
motorized intake damper.
The P352PN control module is factory configured for
‘Reverse Acting’ mode. The analog signal output
increases as the sensed pressure drops. (Note:
Dashed areas in accompanying graph show throttling
range possibilities from minimum to maximum.)
The control set-point is factory set at 360 psig, with a
100 psi throttling range.
If outdoor air temperature and system load result in a
condensing pressure above 360 psig the output signal
will be 0 volts. At a signal voltage of 0, the damper
actuator motor will drive fully counter-clockwise,
opening the damper 100%.
At refrigerant pressures below 260 psig, the control
output signal will be 10 VDC, driving the actuator fully
clockwise.
In practical operation, the condenser intake damper will
be fully closed whenever sensed refrigerant pressure is
below 260 psig. This would normally occur during an
extended system OFF interval, especially during
periods of moderate to low outdoor temperatures. Upon
compressor start, the pressure in the system will
increase until the 260 psig minimum throttling range is
reached. The damper will only begin to modulate at
pressures above 260 psig, ensuring that the actual
operating condensing pressure will always be greater
than this minimum value.

13
DAMPER SCHEMATIC (HORIZONTAL UNIT SHOWN)
MODEL A B C
DSH024B/0 6B 25.875" 5.0" 2 .625"
DSH048B/060B 27.875" 5.0" 26.625"
DSH096B 48.0" 5.0" 29.25"
DSH120B 60.75" 5.0" 29.125"
( ) * + , * - , .
+ / - ( 0 1 . 2 ,
( ) * + , * - , .
/ * 3 1 4 ,
5 6 7 8 9 : ; < = >
? 8 9 @ < A
B C B D E F G D H D E I H E J F
K L M N O
P Q R S T
U V W X Y Z [ W U W X [ V
\ Z U ] ^ _ W

14
DAMPER SCHEMATIC (VERICAL UNIT SHOWN)
MODEL A B C
DSV060B 47. 75" 5.0" 11.875"
DSV096B/120B 66. 75" 5.0" 14.125"
DSV144B/180B 77.5" 5.0" 14.125"
DSV240B 85.5" 5.0" 12.875"
DSV 00B 10 .5" 5.0" 12.875"
` a b c d b e d f
gb h i j d
` a b c d b e d f
cge ` k i f l d
f d h m f b
igf
n o p p q r
s t u
v w x y v z
{ | v } | ~ x w v 
         
     
             
    
            
    ¡ ¢ 

NOTES

P.O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in USA
Copyright © by Johnson Controls 2014 ALL RIGHTS RESERVED
Form 145.10-IOM2 (414)
Issue Date: April 2014
Supercedes Form 145.10-IOM1 (910)
800-861-1001
www.johnsoncontrols.com