Download IOM - CPH Horizontal Water Cooled Air Conditioning Unit

Supersedes: 145.14-IOM1 (708)
Model CPH Horizontal
Water-Cooled
Air Conditioning Unit
MODEL CPH 060, 096, 120
HORIZONTAL WATER-COOLED
AIR CONDITIONING UNITS
INSTALLATION & OPERATION
INSTRUCTIONS
Form 145.14-IOM1 (908)
FORM 145.14-IOM1 (908)
IMPORTANT!
Read BEFORE PROCEEDING!
GENERAL SAFETY GUIDELINES
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,
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 responsibility 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
which it is situated, as well as severe 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.
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.
CAUTION identifies a hazard which could
lead to damage to the machine, damage
to other equipment and/or environmental
pollution. Usually an instruction will
be given, together with a brief explanation.
WARNING indicates a potentially hazardous situation which, if not avoided,
could result in death or serious injury.
NOTE is used to highlight additional information 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
resulting from improper connections to the controls or application of improper control signals.
Failure to follow this will void the manufacturer’s warranty and cause serious damage to property or injury to persons.
2
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
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.
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.
Work on this equipment should only be done by properly trained personnel who are qualified to
work on this type of equipment. Failure to comply with this requirement could expose the worker,
the equipment and the building and its inhabitants to the risk of injury or property damage.
The instructions are written assuming the individual who will perform this work is a fully trained
HVAC & R journeyman or equivalent, certified in refrigerant handling and recovery techniques, and
knowledgeable with regard to electrical lock out/tag out procedures. The individual performing
this work should be aware of and comply with all national, state and local safety and environmental regulations while carrying out this work. Before attempting to work on any equipment,
the individual should be thoroughly familiar with the equipment by reading and understanding
the associated service literature applicable to the equipment. If you do not have this literature,
you may obtain it by contacting a Johnson Controls Service Office.
Should there be any question concerning any aspect of the tasks outlined in this instruction,
please consult a Johnson Controls Service Office prior to attempting the work. Please be aware
that this information may be time sensitive and that Johnson Controls reserves the right to revise
this information at any time. Be certain you are working with the latest information.
Johnson Controls
3
FORM 145.14-IOM1 (908)
TABLE OF CONTENTS
General Information
Installation
Inspection of Equipment
Site Selection
General Data
Dimensional Data
Water Piping
Water Pressure Drop
Supply/Return Air Ductwork
Electrical Wiring Fan Performance Data
Motor and Drive Data
RPM Adjustment
Start-Up & Operation
Refrigerant Charges
Safety Switch Settings
Typical Schematic
Maintenance / Service
Filter Sizes
4
6
7
8
8
9
10
12
13
14
14
15
15
16
16
17
17
17
18
19
19
JOHNSON CONTROLS
Johnson Controls
H
180
A= Current
B= Future
C= Future
2
E
E= Std. Electro-Mechanical Controls
K= Remote Management Relay Kit
M= LCCS Control System
F= Future Options
Control Options
Voltage
A
1= 208/230-60-3
2= 208/230-60-3
4= 460-60-3
5= 575-60-3
6= 265-60-1
8= 380-415/3/60
Design Series
180 = 15 Ton
240 = 20 Ton
300 = 25 Ton
Nominal Capacity
060 = 5 Ton
096 = 8 Ton
120 = 10 Ton
144 = 12 Ton
V= Vertical Arrangement
H= Horizontal Arrangement
Product Identifier
CP= Water-Cooled Package R-22
CS= Water-Cooled Package R410A
Future
Product Category
CP
Water-side Options
A= None
B= Hot Gas Bypass
E= Future Options
A= Std. Water Coil
c= Corrosion Protective Coating
D= Stainless Steel Drain Pan
F= Coated Coil w/ SS Drain Pan
ID Motor
0= None
Future
-
Service Digit
A= None
Future
A
0= None
D= Condensate Overflow
Miscellaneous Options
A
Heating Options
0
Refrigerant Circuit Options
A
A= Std. Water Coil
B= Hot Gas Bypass
E= Future Options
A
Indoor Air-side Options
A
1= Standard Air-Side Coil
2= High Static
3= High Efficiency
4= High Static & Efficiency
5= TEFC
1
UNIT NOMENCLATURE
FORM 145.14-IOM1 (908)
5
FORM 145.14-IOM1 (908)
GENERAL INFORMATION
Our units are designed to accommodate the everchanging installation requirements of today’s market.
All models 5 - 10 tons are shipped as factory-charged
unitized packages. Low profile design allows the unit to
be installed on the floor or suspended from the ceiling.
CPH models feature a ‘straight-through’ airflow configuration. Units are completely factory wired and piped.
These units are designed to allow easy passage through
doors, hallways and elevators. All unit components are
securely mounted inside the heavy gauge “Galvalume”
steel cabinet. All units are lined with 1/2” thick - 2 lb
density acoustical insulation to ensure the quietest operation. All models are provided with medium- efficiency
2” thick throwaway filters.
The 5 ton model has a single refrigerant circuit. The 8
and 10 ton models are dual compressor units with two independent compressor/ condenser circuits. Evaporator
coils are of copper tube and rippled aluminum plate fin
construction. The high-efficiency tube-in-tube condensers feature a convoluted inner tube design for optimum
performance. Standard models feature a copper inner
tube surrounded by a steel outer tube, and carry a 400
psig working pressure rating. Multiple refrigerant circuit
models feature internally manifolded condensers (single
water in, water out connection).
Installation time is minimized with all models. When planning an installation consider power supply, thermostat,
condensate drain line, duct run, and service clearances.
A remote thermostat device is field supplied and installed
to control the unit operation.
Service access doors are equipped with lifting handles,
and are located on both sides of the unit to allow easy
servicing of all components.
All units are equipped with centrifugal blowers combined
with variable pitch adjustable pulleys. Forward curved
double width, double inlet blowers are used for evaporator air movement. All models employ a draw-through
air flow arrangement. Large evaporator coil face areas
reduce noise levels, air pressure drops, and minimize
potential condensate blow-off. All blower wheels are
galvanized steel, with solid steel shafts supported in
permanently lubricated ball bearings. V-belts drive all
models and blower RPM can be adjusted through the
motor sheave.
High efficiency Scroll compressors are used in all models, mounted on durable rubber isolators to reduce vibration and noise while operating. Each refrigerant circuit is
equipped with high pressure and low pressure switches.
All models are equipped with an adjustable thermal expansion valve (with external equalizer), one valve per
circuit. Each refrigerant circuit is also equipped with a
liquid line filter drier, sight glass/moisture indicator, and
service access ports. An electrically re-setable lock-out
relay will shut off the compressor in the event of pressure
switch trip during operation. Control circuit operates on
24V, and features an oversized transformer. Optional
anti-short circuit timers can be field/factory installed.
6
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
TYPICAL INSTALLATION LAYOUT (CPH060 SHOWN)
Johnson Controls
LD13464
7
FORM 145.14-IOM1 (908)
PRE-INSTALLATION INSPECTION OF EQUIPMENT
UNIT MOUNTING
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.
The 5 through 10 ton models are shipped as a fully
assembled integral package. Units are not intended for
outdoor installation.
Record any unit damage on the Bill of
Lading and report to carrier and factory
immediately. Shipping and handling
damages are not warranty items.
Units may be either hung, or floor mounted. If unit is to be
hung, use all mounting points indicated. The use of 1/2
in. diameter hanger rods is recommended. Ensure the
attachment points of the rods to the building structure are
sufficient to support the unit weight. In order to ensure
efficient condensate drainage, the unit may be pitched
towards the condensate drain outlet end of the unit. A
minimum of 4 in. clearance is required under the unit to
allow for trapping of the evaporator condensate drain.
Floor mounted units should be secured on a solid, level
pad. The use of isolating vibro-pads at several points
under the bottom mounting channels is recommended.
Ensure that provision is made for clearance to install a
trap on the condensate drain outlet.
RIGGING
PRIOR TO MOUNTING UNIT, CHECK
INDIVIDUAL UNIT WEIGHTS 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.
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
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 50ºF and 15ºF. 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. Install
thermostats, air supplies and returns so that each unit
will operate only on individual unit control.
8
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
GENERAL DATA
Model
Nominal Cooling(Ton)
Cooling Performance
Gross Cooling Capacity(Btuh)
Design CFM
Compressor-Type
Number Used
Evaporator Coil-Type
Face Area(sq ft)
Rows/FPI
Condenser-Type
Number Used/Tons Capacity
Nominal Water flow rate (gpm)
Condenser Water Connections
Evaporator Fan-Type
Number Used
Diameter x Width (in)
Drive
Motor HP (Standard/Oversize)
Filters
Number Used-Size(in)
Condensate Drain Connection
Weight
060A
5
096A
8
120A
10
64100
2000
101800
3200
126000
4000
Scroll
1
2
2
Copper Tubes, Aluminum Fins
5.28
9.17
9.17
3/13
3/13
3/13
Coaxial
1/5
2/4
2/5
15
24
30
1" FPT
1-1/4" FPT
1-1/4" FPT
Centrifugal, Forward Curved
1
2
2
10x10
10x8
10x8
Adjustable Belt
1/NA
1.5/2
2/3
2-20x20x2
460
2-20x25x2
1-20x20x2
3/4FPT
710
2-20x25x2
1-20x20x2
760
NOTE: Cooling performance is rated at 80°F dry bulb 67°F wet bulb entering air temperature,
CFM listed, 85°F entering 95°F leaving water temperature, and water flow rate listed.
Gross capacity does not include the effect of evaporator fan motor heat.
The water cooled coaxial condensers in these units have copper tubing and are NOT suitable for salt or brackish water.
Do not install these units outdoors, or in any area where the surrounding temperature may drop below 32ºF.
Johnson Controls
9
FORM 145.14-IOM1 (908)
060
LD13465
10
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
096 & 120
LD13466
Johnson Controls
11
FORM 145.14-IOM1 (908)
WATER PIPING
All factory installed water piping terminates inside the
unit. Multi-condenser units feature manifolded single
water in and out connections.
Water connection fittings are threaded copper. Use
caution when tightening steel pipe into copper
fittings. Always use a backing wrench on the hex
fittings inside the unit.
It is recommended that flexible connectors be provided
on the water supply and return lines if noise and vibration transmission could be a problem.
If the unit is running on mains water, we recommend
adjusting the water regulating valve to give 100ºF leaving water temperature or 220 PSIG condensing temperature. This will give the best compromise between
low water flow and high operating efficiency. If the
condenser water is being re-circulated through a cooling
tower or a chilled water system, it is recommended that
the water regulating valve to set for a lower condensing
temperature. This will provide higher efficiency, lower
operating cost and a lower sound level. The minimum
condensing pressure required for satisfactory expansion valve operation is 170 PSIG. This corresponds to
a leaving water temperature of 90ºF.
Water piping should include shutoff / balancing valves so
that the unit can be serviced without shutting down and
draining the entire water supply circuit. Since units are
piped in parallel piping circuits, the shutoff valves may
be used to equalize the pressure drop to each branch
for even condenser water distribution. A bibcock or a
plugged tee fitting should be installed between the shutoff valves and the unit in both the inlet and outlet pipes.
These connections are to provide for acid cleaning of
the condenser, if this should become necessary.
CONDENSER PRESSURE CONTROL
Water regulating valves provide control of the quantity of
condenser water supplied to the unit by sensing the condensing temperature. The factory installed Condenser
Pressure Control option provides a regulating valve for
each internal condenser water circuit.
The water regulating valve needs to be adjusted to
maintain a leaving water temperature between 90ºF and
100ºF. If using a refrigerant discharge pressure gauge,
adjust the water valve to maintain a condensing pressure
of 170 to 220 PSIG. The valve is adjusted by turning
the ¼ inch square shaft on top of the spring housing.
Turning the adjusting screw counter clockwise will raise
the opening pressure and raise the condensing pressure
being maintained. Turning the adjusting screw clockwise
will lower the opening point and lower the condensing
pressure being maintained. If mains water is being used,
make sure the valve closes soon after the compressor
stops. If the flow does not stop after a few minutes,
raise the opening pressure by turning the adjusting shaft
counter clockwise until the flow stops.
12
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
WATERSIDE PRESSURE DROP
(STANDARD UNIT-MANIFOLDED CONDENSERS)
40
38
36
34
32
30
PRESSURE DROP (FT H20)
28
26
24
22
20
18
16
14
12
10
8
6
4
2
0
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
UNIT FLOW RATE (GPM)
060
Johnson Controls
096
120
13
FORM 145.14-IOM1 (908)
DUCTWORK
When installing ductwork, adhere to local Codes and
sensible practice. 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.
Canvas or other types of flexible collars are recommended for connecting the air ducts to the unit. The
supply air duct collar can be connected directly to the
blower outlet flanges. Return air may be ducted to the
unit, or drawn directly from the return air space. If a
ducted return is desired, duct connection flanges may
be secured directly to the filter frame flanges. The filter
frame on 5, 8 and 10 ton models has duct attachment
flanges incorporated into the filter rack.
All wiring must comply with applicable
local and national codes (NEC). Type and
location of disconnect switches must
comply with all applicable codes.
Unit requires installer to provide a 24volt thermostat
with appropriate heating and cooling stages as needed.
For low voltage wiring, 18 gauge wire may be used for
up to 50 feet lengths. Low voltage runs up to 125 feet
require 16 gauge wire.
All models are designed for single zone cooling applications, utilizing space or return air thermostatic controls.
A low voltage terminal block is provided for hook-up of
conventional or programmable thermostats.
ELECTRICAL WIRING
Follow local electrical codes when making electrical connections. Units are completely factory wired for normal
supply voltages (ie.208-230, 460, 575/3phase/60hz)
Confirm unit specifications by checking unit data plate.
All electrical components are accessible through an
independent electrical panel located on the right hand
side of the unit (condenser/compressor section). The
electrical control boxes are located behind outer access panels. The compressor section electrical cover
is provided with wiring diagrams on the inside, which
must be opened to be read.
Provide individual power disconnects for each unit.
Install a secure ground to the bonding lug located in
the electrical control panel. If canvas flexible joints are
used on ductwork, install a ground wire to the ductwork
as well.
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.
14
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
STANDARD EVAPORATOR MOTORS
MODEL
#
VOLTAGE
060A
208-230/3/60
460/3/60
575/3/60
1
1
1
@
@
@
19.3
7.5
6.4
123.0
49.5
40.0
1.00
1.00
1.00
3.1
1.6
1.3
096A
208-230/3/60
460/3/60
575/3/60
2
2
2
@
@
@
13.9
7.1
5.4
88.0
44.0
34.0
1.50
1.50
1.50
120A
208-230/3/60
460/3/60
575/3/60
2
2
2
@
@
@
19.3
7.5
6.4
123.0
49.5
40.0
2.00
2.00
2.00
QTY
COMPRESSOR
RLA
LRA
OVERSIZE EVAPORATOR MOTORS
MODEL
VOLTAGE
COMPRESSOR
#
QTY
RLA
LRA
EVAPORATOR
HP
FLA
RPM
MIN. CCT.
AMPACITY
MAX FUSE /
CCT. BKR. AMP
1800
1800
1800
27.23
10.98
9.30
45
15
15
4.4
2.2
1.8
1800
1800
1800
35.68
18.18
13.95
45
25
15
6.0
3.0
2.4
1800
1800
1800
49.43
19.88
16.80
60
25
20
MIN. CCT.
AMPACITY
MAX FUSE /
CCT. BKR. AMP
EVAPORATOR
HP
FLA
RPM
096A
208-230/3/60
460/3/60
575/3/60
2
2
2
@
@
@
13.9
7.1
5.4
88.0
44.0
34.0
2.00
2.00
2.00
6.0
3.0
2.4
1800
1800
1800
37.28
18.98
14.55
50
25
15
120A
208-230/3/60
460/3/60
575/3/60
2
2
2
@
@
@
19.3
7.5
6.4
123.0
49.5
40.0
3.00
3.00
3.00
8.4
4.2
3.4
1800
1800
1800
51.83
21.08
17.80
70
25
20
NOTES: Data shown for packaged unit installation, with single point power supply.
Min. Circuit Ampacity (MCA) = 1.25 x Largest single motor Amps (FLA or RLA) + sum of the remaining motor Amps
Max Fuse/Cct. Bkr Size (MFS) = 2.25 x Largest motor Amps + sum of the remaining motor amps
Select next smallest NEC listed fuse from calculated value
SUPPLY AIR BLOWER PERFORMANCE
EXTERNAL STATIC PRESSURE - Inches W.C.
MODEL
SUPPLY
#
CFM
RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP
1800
846 0.41 936 0.48 1024 0.56 1107 0.64 1195 0.74 1259 0.82 1325 0.90 1400 0.99
-
-
2000
917 0.54 999 0.62 1079 0.71 1157 0.79 1233 0.89 1305 0.98
-
-
-
-
-
-
2200
994 0.70 1069 0.79 1142 0.88 1214 0.98
-
-
-
-
-
-
3000
810 0.65 900 0.78 986 0.91 1066 1.04 1143 1.17 1221 1.32 1294 1.48 1363 1.63 1433 1.79
3200
851 0.78 938 0.91 1018 1.04 1095 1.18 1170 1.32 1236 1.42 1305 1.56 1380 1.74 1447 1.90
3400
892 0.91 974 1.05 1051 1.19 1125 1.33 1196 1.48 1266 1.64 1320 1.81 1390 1.90
3600
927 1.05 1006 1.20 1081 1.34 1152 1.50 1220 1.65 1287 1.81 1353 1.98 1405 2.07 1472 2.17
4000
1012 1.40 1085 1.56 1153 1.73 1220 1.89 1283 2.06 1345 2.23 1405 2.41 1464 2.59 1522 2.78
4400
1100 1.83 1166 2.00 1230 2.18 1292 2.37 1351 2.55 1410 2.74 1466 2.92
060A
096A
120A
0.2
0.4
0.6
0.8
1.0
-
1.2
-
-
1.4
-
1.6
-
1.8
-
-
-
-
-
NOTE:
1. At higher evaporator airflows, and wet bulb conditions condensate carry-over may occur. Adjust airflow downward as necessary.
2. Values include pressure drop from wet coil and clean filters.
3. Shaded areas indicate oversize motors
Johnson Controls
15
FORM 145.14-IOM1 (908)
MOTOR AND PULLEY DATA
STANDARD BLOWER MOTOR AND DRIVE DATA
Drive Range
Model
Motor
(RPM)
Frame
RPM
HP
Size
60
946-1419
1
143
1800
96
968-1340
1-1/2
145
1800
120
1010-1346
2
145
1800
OVERSIZE BLOWER MOTOR AND DRIVE DATA
Drive Range
Model
Motor
(RPM)
Frame
RPM
HP
Size
96
1117-1489
2
145
1800
120
1212-1548
3
145
1800
Eff.
(%)
82.5
84.0
84.0
Adjustable
Motor Pulley
Pitch Dia.
(in)
1.9-2.9
2.4-3.4
2.8-3.8
Fixed
Blower Pulley
Pitch Dia.
(in)
3.5
4.5
5.0
Eff.
(%)
84.0
86.5
Adjustable
Motor Pulley
Pitch Dia.
(in)
2.8-3.8
3.4-4.4
Fixed
Blower Pulley
Pitch Dia.
(in)
4.5
5.0
Belts
Designation
Qty
4L-400
4L-440
A43
1
1
1
Belts
Designation
Qty
A42
A45
1
1
BLOWER SPEED ADJUSTMENT
The RPM of the supply air and condenser air blowers will depend on the required CFM, and the static resistances
of both the supply/discharge and the return/intake duct systems. With this information, the RPM for the blowers can
be determined from the blower performance tables. Adjustment of blower speed is accomplished as follows:
1) Loosen belt tension by moving motor towards the blower shaft via the adjustable mounting.
2) Loosen the setscrew in the adjustable motor pulley flange. Remove external key on pulleys 4 in. dia and
larger.
3) Slower speed will increase when moveable flange is adjusted towards the fixed flange (closed). Blower speed
will decrease when the moveable flange is adjusted away from the fixed flange (opened). Pulleys are adjustable only in half-turn increments. Do not open pulley more than five full turns for “4L” and “A” belts, or six full
turns for “B” belts.
4) Once the pulley has been opened/closed the appropriate number of turns, replace the external key and tighten
the adjustment setscrew. Proper torque is 110-130 in.-lbs.
5) Install drive belt and adjust motor mount to tension belt.
16
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
START-UP AND OPERATION
Prior to starting unit for the first time,
turn the thermostat system switch to
OFF - or raise the cooling setpoint to the
highest temperature to prevent the unit
from starting, then close the electrical
disconnect switch.
Start unit and check rotation of fans and compressors.
Scroll compressors will only compress in one rotational
direction. Three phase compressors will rotate in either
direction depending upon phasing of the power. Since
there is a 50-50 chance of connecting power in such a
way as to cause rotation in the reverse direction, it is
important to ensure proper rotation direction is achieved
when the system is installed and operated.
There is no negative impact on durability caused by
operating three phase Scroll compressors in the reversed direction for a short period of time (under one
hour). However, after several minutes of operation the
compressors internal protector will trip.
If opposite rotation is needed, disconnect and reverse
any two leads of the three phase supply. Reconnect
power and observe for correct rotation.
Observe unit operation and check for unusual noise or
vibration.
Verification of proper direction is made by observing
that suction pressure drops and discharge pressure
rises when the compressor is energized. Reverse rotation also results in an elevated sound level as well as
substantially reduced current draw.
Ref. Charge
No. of Circuits
Per Circuit (lb)
5 TON
1
4.625
8 TON
2
4.188
10 TON
2
5.125
PRESSURE SWITCH SETTINGS - ALL MODELS
High
Low
Cut Out (PSIG)
400
25
Cut In (PSIG)
275
60
Johnson Controls
17
FORM 145.14-IOM1 (908)
TYPICAL SCHEMATIC
18
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
MAINTENANCE / SERVICE
DISCONNECT AND LOCK OUT POWER
WHEN SERVICING UNIT. FAILURE TO
DO SO MAY RESULT IN PERSONAL INJURY OR DEATH DUE TO ELECTRICAL
SHOCK.
Exercise care when working around
the sharp metal edges of door panels
or door frames, etc. These edges can
cause injury.
FILTERS Inspect filters monthly and replace as necessary. Use UL
Class 2 rated filters. Factory supplied filters are medium
efficiency, extended surface pleated type. Replacements
should be of the same type, to maintain optimum airflow
performance.
BLOWERS Inspect both the evaporator and condenser blowers at
each regular service interval. Clean blower wheels as
needed. Bearings are permanently sealed ball type, and
do not require lubrication. Check bearings for any signs
of wear ( movement between inner and outer races ).
Ensure bearing locking collars are
secure to the shaft, and that collar locking screw is properly set. Check that the blower wheel is tight on the shaft,
and that the hub set screws are properly torqued.
DRIVE BELTS –
Examine belts periodically for wear. Glazed areas on the
drive surfaces indicate overheating due to belt slippage.
Ideal tension is the lowest tension at which the belt will
not slip under peak load conditions. Over-tensioning
shortens belt and bearing life.
The tension on the belt should be adjusted for a deflection of 1/64 of an inch per inch of belt span, with the appropriate force applied at the midpoint of the span. Tension “New” belts at the maximum value indicated. Used
belts should be maintained at the minimum value.
EVAPORATOR AND CONDENSER COILS Inspect the evaporator coil at filter change intervals.
Inspect the condenser coil at least semi-annually. A
dirty condenser coil will result in elevated condensing
pressures and poor unit performance. Dirty or clogged
evaporator coils causes low suction pressure and lost
capacity. If the coils appear dirty, clean them using mild
detergent or a commercial coil cleaning agent.
REFRIGERANT CIRCUIT(S)
With the unit operating, check and record the compressor discharge and suction pressures. The compressor running
current should also be recorded. A maintenance log of these readings can indicate if the unit is operating within it’s
normal limits. Abnormal readings should be investigated, and the Cause corrected.
Johnson Controls
19
FORM 145.14-IOM1 (908)
NOTES
20
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
NOTES
Johnson Controls
21
FORM 145.14-IOM1 (908)
NOTES
22
JOHNSON CONTROLS
FORM 145.14-IOM1 (908)
LIMITED WARRANTY
Johnson Controls warrants this product to be free from defects in workmanship or material for a period of one year from date of original
installation or 18 months from date of shipment, whichever comes first
Johnson Controls obligation under this Warranty is LIMITED to repairing or replacing at our sole option, at our factory, any part thereof
which shall be returned to our factory, transportation charges prepaid and which on examination proves to have been thus defective
under normal domestic use not exceeding the fuel rating. The defective part should be returned through a qualified servicing dealer.
Upon warranty determination, the replacement part will be shipped freight collect and assumes the unexpired portion of this Limited
Warranty.
When a defective part can be repaired or replaced, Johnson Controls shall not be obligated to repair the entire unit or any part thereof
other than the defective part.
This warranty applies only to the original homeowner, and is subject to the terms and conditions hereof.
COMPRESSOR – FIVE YEAR LIMITED WARRANTY
In addition to the One Year Limited Warranty, Johnson Controls warrants the compressor to be free from defects in workmanship or
material for a period of five (5) years from the date of original installation. If a compressor fails during this five year period, a new compressor will be supplied. The customer will be responsible for freight costs from our factory for delivery of the replacement compressor and also for the return of the defective compressor which may be required under the terms of the Warranty. Labor and any other
expense involved in replacing the compressor is not covered by this Warranty.
LABOR AND COST NOT COVERED
This Warranty provides only replacement parts or credits, and does not provide for or cover any labor, shipping, handling or other costs
for service travel, servicing, removing, or installing any parts.
This Warranty shall be void if:
EXCLUSIONS
1. The unit is not installed by a licensed or otherwise qualified or contractor and in compliance with the Installation Manual, applicable
installation and good trade practices.
2. The defect or damage is caused by accident, abuse, negligence of any person or company, misuse, riot, flood, fire or Acts of
God.
3. The unit is not operated and regularly serviced and maintained as called for in the Users’ Manual.
4. Damages are caused by operating the unit in a commercial or corrosive atmosphere containing any damaging or dangerous
chemicals.
5. The unit is modified or services in a manner not in accordance with the Installation Manual and Users’ Manual.
6. Components, replacement parts, or other accessories not compatible with the unit or not approved by Johnson Controls have
been used with or attached to the unit.
7. The defect or damage is not caused by Skymark, or it arises from circumstances beyond the control of Johnson Controls.
8. The unit is installed outside the United States or Canada, or has been removed from the place where it was originally installed.
THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES, OBLIGATIONS OR LIABILITIES, EXPRESSED OR IMPLIED BY
EMPLOYEES OR REPRESENTATIVES OF JOHNSON CONTROLS. ALL STATUTORY, EXPRESSED OR IMPLIED WARRANTIES,
INCLUDING THE IMPLIED WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY
NEGATED AND EXCLUDED. ANY CLAIMS FOR INCIDENTAL AND CONSEQUENTIAL DAMAGES, OR ANY OTHER DAMAGES
OR EXPENSES BEYOND THE TERMS OF THIS LIMITED WARRANTY ARE HEREBY EXPRESSLY NEGATED AND EXCLUDED.
Johnson Controls
23
Subject to change without notice. Printed in U.S.A.
Copyright© 2008 by Unitary Products Group. All rights reserved.
Engineered Systems
Products
Group
Form 145.14-IOM1 (908)
Supersedes 145.14-IOM1 (708)
P.O. Box 1592
York, PA
17405
York
PA
17405