Rheem 14AJM Installation Manual
INSTALLATION INSTRUCTIONS
RECOGNIZETHIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION!
!
DO NOT DESTROYTHIS MANUAL
PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE BY A SERVICEMAN
THESE INSTRUCTIONS ARE INTENDED AS AN AID TO
QUALIFIED, LICENSED SERVICE PERSONNEL FOR PROPER
INSTALLATION, ADJUSTMENT AND OPERATION OF THIS UNIT.
READ THESE INSTRUCTIONS THOROUGHLY BEFORE
ATTEMPTING INSTALLATION OR OPERATION. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN IMPROPER
INSTALLATION, ADJUSTMENT, SERVICE OR MAINTENANCE
POSSIBLY RESULTING IN FIRE, ELECTRICAL SHOCK,
PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
!
13 & 14.5 SEER SERIES
CONDENSING UNITS
11⁄2 - 5 TONS FEATURING
EARTH-FRIENDLY R-410A REFRIGERANT R-410
NOTE: Appearance of unit may vary.
(13 & 14.5 SEER
MODELS IN CERTAIN
MATCHED SYSTEMS)
SUPERSEDES 92-21354-78-00
92-21354-78-01
TABLE OF CONTENTS
1.0 SAFETY INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Checking Product Received. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.4 Electrical and Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.0 LOCATING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Corrosive Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Condenser Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Operational Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 For Condensers With Space Limitations . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5 Customer Satisfaction Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.6 Proper Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.7 Unit Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.8 Factory-Preferred Tie-Down Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.0 REFRIGERANT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.0 TOOLS REQUIRED FOR INSTALLING & SERVICING R-410A MODELS . . . . . 8
5.1 Specifications of R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.2 Quick Reference Guide for R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.0 REPLACEMENT UNITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.0 EVAPORATOR COIL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8.0 REPLACEMENT UNITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.0 INTERCONNECTING TUBING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.1 Vapor and Liquid Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.2 Maximum Length of Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.3 Outdoor Unit Installed Above Indoor Coil. . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.4 Outdoor Unit Below Indoor Coil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.5 Tubing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9.6 Tubing Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
9.7 Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
10.0 EVACUATION PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
11.0 START UP AND PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
12.0 CHECKING AIRFLOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
13.0 CHECKING REFRIGERANT CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
13.1 Charging Using Charging Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
13.2 Charging By Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
13.3 Final Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
14.0 ELECTRICAL WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
14.1 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
14.2 Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
14.3 Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
15.0 FIELD INSTALLED ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
15.1 Compressor Crankcase Heat (CCH) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
15.2 Time Delay Control (TDC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
15.3 Low Ambient Control (LAC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
15.4 High and Low Pressure Controls (HPC & LPC). . . . . . . . . . . . . . . . . . . . . . 18
16.0 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
16.1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
16.2 Single-Pole Compressor Contactor (CC). . . . . . . . . . . . . . . . . . . . . . . . . . . 18
17.0 TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
17.1 Electrical Checks Flow Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
17.2 Mechanical Checks Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
17.3 Superheat Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
17.4 Subcooling Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
17.5 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
18.0 WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
18.1 PSC Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
18.2 ECM Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2
1.0 SAFETY INFORMATION
WARNING
!
THESE INSTRUCTIONS ARE INTENDED AS AN AID TO QUALIFIED LICENSED
SERVICE PERSONNEL FOR PROPER INSTALLATION, ADJUSTMENT AND
OPERATION OF THIS UNIT. READ THESE INSTRUCTIONS THOROUGHLY
BEFORE ATTEMPTING INSTALLATION OR OPERATION. FAILURE TO FOLLOW THESE INSTRUCTIONS MAY RESULT IN IMPROPER INSTALLATION,
ADJUSTMENT, SERVICE OR MAINTENANCE POSSIBLY RESULTING IN FIRE,
ELECTRICAL SHOCK, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
WARNING
!
THE MANUFACTURER’S WARRANTY DOES NOT COVER ANY DAMAGE OR
DEFECT TO THE HEAT PUMP CAUSED BY THE ATTACHMENT OR USE OF
ANY COMPONENTS. ACCESSORIES OR DEVICES (OTHER THAN THOSE
AUTHORIZED BY THE MANUFACTURER) INTO, ONTO OR IN CONJUNCTION
WITH THE HEAT PUMP. YOU SHOULD BE AWARE THAT THE USE OF UNAUTHORIZED COMPONENTS, ACCESSORIES OR DEVICES MAY ADVERSELY
AFFECT THE OPERATION OF THE HEAT PUMP AND MAY ALSO ENDANGER
LIFE AND PROPERTY. THE MANUFACTURER DISCLAIMS ANY RESPONSIBILITY FOR SUCH LOSS OR INJURY RESULTING FROM THE USE OF SUCH
UNAUTHORIZED COMPONENTS, ACCESSORIES OR DEVICES.
WARNING
!
DISCONNECT ALL POWER TO UNIT BEFORE STARTING MAINTENANCE.
FAILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK RESULTING IN
SEVERE PERSONAL INJURY OR DEATH.
WARNING
!
DO NOT USE OXYGEN TO PURGE LINES OR PRESSURIZE SYSTEM FOR
LEAK TEST. OXYGEN REACTS VIOLENTLY WITH OIL, WHICH CAN CAUSE AN
EXPLOSION RESULTING IN SEVERE PERSONAL INJURY OR DEATH.
WARNING
!
THE UNIT MUST BE PERMANENTLY GROUNDED. FAILURE TO DO SO CAN
CAUSE ELECTRICAL SHOCK RESULTING IN SEVERE PERSONAL INJURY OR
DEATH.
WARNING
!
TURN OFF ELECTRIC POWER AT THE FUSE BOX OR SERVICE PANEL
BEFORE MAKING ANY ELECTRICAL CONNECTIONS.
ALSO, THE GROUND CONNECTION MUST BE COMPLETED BEFORE MAKING
LINE VOLTAGE CONNECTIONS. FAILURE TO DO SO CAN RESULT IN ELECTRICAL SHOCK, SEVERE PERSONAL INJURY OR DEATH.
CAUTION
!
The filter drier is located inside the control box. The filter drier must be
installed externally in the liquid line or the Warranty will be VOID!
3
WARNING
!
THE MANUFACTURER’S WARRANTY DOES NOT COVER ANY
DAMAGE OR DEFECT TO THE
AIR CONDITIONER CAUSED BY
THE ATTACHMENT OR USE OF
ANY COMPONENTS. ACCESSORIES OR DEVICES (OTHER
THAN THOSE AUTHORIZED BY
THE MANUFACTURER) INTO,
ONTO OR IN CONJUNCTION
WITH THE AIR CONDITIONER.
YOU SHOULD BE AWARE THAT
THE USE OF UNAUTHORIZED
COMPONENTS, ACCESSORIES
OR DEVICES MAY ADVERSELY
AFFECT THE OPERATION
OF THE AIR CONDITIONER AND
MAY ALSO ENDANGER LIFE
AND PROPERTY. THE MANUFACTURER DISCLAIMS ANY
RESPONSIBILITY FOR SUCH
LOSS OR INJURY RESULTING
FROM THE USE OF SUCH
UNAUTHORIZED COMPONENTS,
ACCESSORIES OR DEVICES.
2.0 GENERAL
The information contained in this manual has been prepared to assist in the proper
installation, operation and maintenance of the air conditioning system. Improper
installation, or installation not made in accordance with these instructions, can result
in unsatisfactory operation and/or dangerous conditions, and can cause the related
warranty not to apply.
Read this manual and any instructions packaged with separate equipment required
to make up the system prior to installation. Retain this manual for future reference.
To achieve optimum efficiency and capacity, the indoor cooling coils listed in the
condensing unit specification sheet should be used.
IMPORTANT: We recommend replacement of any HVAC equipment that has been
subjected to flooding in order to avoid any risk of injury or harm.
IMPORTANT: Use all available safety precautions during the installation and servicing of any HVAC equipment.
2.1 CHECKING PRODUCT RECEIVED
Upon receiving unit, inspect it for any shipping damage. Claims for damage, either
apparent or concealed, should be filed immediately with the shipping company.
Check condensing unit model number, electrical characteristics and accessories to
determine if they are correct and match the original order from the local distributor.
Check system components (evaporator coil, condensing unit, evaporator blower,
etc.) to make sure they are properly matched.
2.2 APPLICATION
Before installing any air conditioning equipment, a duct analysis of the structure and
a heat gain calculation must be made. A heat gain calculation begins by measuring
all external surfaces and openings that gain heat from the surrounding air and
quantifying that heat gain. A heat gain calculation also calculates the extra heat
load caused by sunlight and by humidity removal.
There are several factors that the installers must consider:
• Outdoor unit location • Proper equipment evacuation
• System refrigerant charge • Indoor unit airflow
• Indoor unit blower speed • Supply and return air duct design and sizing
• System air balancing • Diffuser and return air grille location and sizing
4
L
H
SEE DETAIL A
w
A-00008
2.3 (SEE FIGURE 1)
FIGURE 1
DIMENSIONS
AIR DISCHARGE: ALLOW
60” MINIMUM CLEARANCE.
AIR INLETS
(LOUVERED
PANELS)
ALLOW 6”
MINIMUM
CLEARANCE
SERVICE ACCESS
ALLOW 24” CLEARANCE
NOTE: GRILLE APPEARANCE
MAY VARY.
DIMENSIONAL DATA
13 Seer Model Size
14.5 Seer Model Size
Height “H” (in.) [mm]
Length “L” (in.) [mm]
Width “W” (in.) [mm]
18, 24
241/4 [616]
235/8[600]
235/8 [600]
30 36, 42 48, 60
18, 24, 30 36, 42, 48, 60
1
/4 [616]
24
275/8[702]
5
27
/8 [702]
27
31
31
3
/8 [710]
5
/8[803]
5
/8 [803]
35
31
31
3
/8 [913]
5
/8[803]
5
/8 [803]
5
2.4 ELECTRICAL & PHYSICAL DATA (SEE TABLE 1)
TABLE 1
ELECTRICAL AND PHYSICAL DATA – 13 SEER
Electrical Physical
Model
Number
Rev. 6/2/2009
18 1-60-208/230 9/9 48 0.6 12/12 15/15 20/20 8.43 1 1675 75.2 120 128
24 1-60-208/230 13.5/13.5 58.3 0.6 18/18 25/25 30/30 8.43 1 1665 73.8 121 129
30 1-60-208/230 12.8/12.8 73 0.6 17/17 20/20 25/25 10.29 1 2075 86.08 135 143
36 1-60-208/230 16.7/16.7 79 0.8 22/22 30/30 35/35 12.43 1 2690 96 159 167
42 1-60-208/230 17.9/17.9 112 0.8 24/24 30/30 40/40 16.39 1 2980 126.4 218 230
48 1-60-208/230 21.8/21.8 117 0.8 29/29 35/35 45/45 21.85 1 3175 144 225 237
60 1-60-208/230 26.4/26.4 134 1.2 35/35 45/45 60/60 21.85 1 3570 176 223 234
Phase
Frequency (Hz)
Voltage (Volts)
Compressor
Rated Load
Amperes
(RLA)
Locked Rotor
Amperes
(LRA)
Fan Motor
Full Load
Amperes
(FLA)
Minimum
Circuit
Ampacity
Amperes
ELECTRICAL AND PHYSICAL DATA – 14.5 SEER
Electrical Physical
Model
Number
14AJM
Rev. 4/28/2009
18 1-60-208/230 9/9 48 0.8 12/12 15/15 20/20 16.39 1 2805 112 154 171
24 1-60-208/230 13.5/13.5 58.3 0.8 18/18 25/25 30/30 16.39 1 2805 105.6 154 171
30 1-60-208/230 12.8/12.8 64 0.8 17/17 25/25 25/25 16.39 1 3000 112 157 175
36 1-60-208/230 16.7/16.7 79 0.8 22/22 30/30 35/35 21.85 1 3570 130.4 181 201
42 1-60-208/230 17.9/17.9 112 2.8 26/26 30/30 40/40 21.85 1 3060 145.12 205 225
48 1-60-208/230 21.8/21.8 117 2.8 31/31 40/40 50/50 21.85 2 4105 216 246 269
60 1-60-208/230 26.4/26.4 134 2.8 36/36 45/45 60/60 21.85 2 4105 240 254 274
Phase
Frequency (Hz)
Voltage (Volts)
Compressor
Rated Load
Amperes
(RLA)
Locked Rotor
Amperes
(LRA)
Fan Motor
Full Load
Amperes
(FLA)
Minimum
Circuit
Ampacity
Amperes
Fuse or HACR
Circuit Breaker
Minimum
Amperes
Fuse or HACR
Circuit Breaker
Minimum
Amperes
Maximum
Amperes
Maximum
Amperes
Outdoor Coil Weight
Face Area
Sq. Ft. [m
[0.78] [790] [2132] [54.4] [58.1]
[0.78] [786] [2092] [54.9] [58.5]
[0.96] [979] [2440] [61.2] [64.9]
[1.15] [1269] [2722] [72.1] [75.8]
[1.52] [1406] [3583] [98.9] [104.3]
[2.03] [1498] [4082] [102.1] [107.5]
[2.03] [1685] [4990] [101.2] [106.1]
Face Area
Sq. Ft. [m
[1.52] [1324] [3175] [69.8] [77.6]
[1.52] [1324] [2994] [69.8] [77.6]
[1.52] [1416] [3175] [71.2] [79.4]
[2.03] [1685] [3697] [82.1] [91.2]
[2.03] [1444] [4114] [92.9] [102.1]
[2.03] [1937] [6124] [112.9] [122]
[2.03] [1937] [6804] [115.2] [124.3]
No.
2
]
Rows
Outdoor Coil Weight
No.
2
]
Rows
CFM
[L/s]
CFM
[L/s]
Refrig.
Per
Circuit
Oz. [g]
Refrig.
Per
Circuit
Oz. [g]
Net
Lbs. [kg]
Net
Lbs. [kg]
Shipping
Lbs. [kg]
Shipping
Lbs. [kg]
NOTE: Factory Refrigerant Charge includes refrigerant for 15 feet of standard line set.
3.0 LOCATING UNIT
MATCH ALL COMPONENTS:
• OUTDOOR UNIT
• INDOOR COIL/METERING DEVICE
• INDOOR AIR HANDLER/FURNACE
• REFRIGERANT LINES
6
3.1 CORROSIVE ENVIRONMENT
The metal parts of this unit may be subject to rust or deterioration if exposed to a
corrosive environment. This oxidation could shorten the equipment’s useful life.
Corrosive elements include, but are not limited to, salt spray, fog or mist in seacoast
areas, sulphur or chlorine from lawn watering systems, and various chemical contaminants from industries such as paper mills and petroleum refineries.
If the unit is to be installed in an area where contaminants are likely to be a problem, special attention should be given to the equipment location and exposure.
• Avoid having lawn sprinkler heads spray directly on the unit cabinet.
• In coastal areas, locate the unit on the side of the building away from the waterfront.
• Shielding provided by a fence or shrubs may give some protection, but cannot
violate minimum airflow and service access clearances.
• Elevating the unit off its slab or base enough to allow air circulation will help
avoid holding water against the basepan.
Regular maintenance will reduce the build-up of contaminants and help to protect
the unit’s finish.
WARNING
!
DISCONNECT ALL POWER TO UNIT BEFORE STARTING
MAINTENANCE. FAILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK
RESULTING IN SEVERE PERSONAL INJURY OR DEATH.
• Frequent washing of the cabinet, fan blade and coil with fresh water will remove
most of the salt or other contaminants that build up on the unit.
• Regular cleaning and waxing of the cabinet with an automobile polish will pro-
vide some protection.
• A liquid cleaner may be used several times a year to remove matter that will not
wash off with water.
Several different types of protective coatings are offered in some areas. These
coatings may provide some benefit, but the effectiveness of such coating materials
cannot be verified by the equipment manufacturer.
3.2 CONDENSER LOCATION
Consult local and national building codes and ordinances for special installation
requirements. Following location information will provide longer life and simplified
servicing of the outdoor condenser.
NOTE: These units must be installed outdoors. No ductwork can be attached, or
other modifications made, to the discharge grille. Modifications will affect performance or operation.
3.3 OPERATIONAL ISSUES
• IMPORTANT: Locate the condenser in a manner that will not prevent, impair or
compromise the performance of other equipment horizontally installed in proximity to the unit. Maintain all required minimum distances to gas and electric
meters, dryer vents, exhaust and inlet openings. In the absence of National
Codes, or manaufacturers’ recommendations, local code recommendations
and requirements will take presidence.
• Refrigerant piping and wiring should be properly sized and kept as short as
possible to avoid capacity losses and increased operating costs.
• Locate the condenser where water run off will not create a problem with the
equipment. Position the unit away from the drip edge of the roof whenever possible. Units are weatherized, but can be affected by water pouring into the unit
from the junction of rooflines, without protective guttering.
3.4 FOR CONDENSERS WITH SPACE LIMITATIONS
In the event that a space limitation exists, we will permit the following clearances:
Single Unit Applications: One condenser inlet air grille side may be reduced to no
less than a 6-inch clearance. Clearances below 6 inches will reduce unit capacity
and efficiency. Do not reduce the 60-inch discharge, or the 24-inch service clearances.
Multiple Unit Applications: When multiple condenser grille sides are aligned, a 6inch per unit clearance is recommended, for a total of 12 inches between two units.
Two combined clearances below 12 inches will reduce capacity and efficiency. Do
not reduce the 60-inch discharge, or 24-inch service, clearances.
3.5 CUSTOMER SATISFACTION ISSUES
• The condenser should be located away from the living, sleeping and recreation-
al spaces of the owner and those spaces on adjoining property.
• To prevent noise transmission, the mounting pad for the outdoor unit should
not be connected to the structure, and should be located sufficient distance
above grade to prevent ground water from entering the unit.
3.6 PROPER INSTALLATION
Proper sizing and installation of equipment is critical to achieve optimal performance. Use the information in this Installation Instruction Manual and reference the
applicable Engineering Specification Sheet when installing this product.
IMPORTANT: This product has been designed and manufactured to meet ENERGY STAR
nents. However, proper refrigerant charge and proper air flow are critical to achieve
rated capacity and efficiency. Installation of this product should follow the manufacturer’s refrigerant charging and air flow instructions. Failure to confirm proper
charge and airflow may reduce energy efficiency and shorten equipment life.
®
criteria for energy efficiency when matched with appropriate coil compo-
7
3.7 UNIT MOUNTING
If elevating the condensing unit, either on a flat roof or on a slab, observe the
following guidelines.
• The base pan provided elevates the condenser coil 3/4” above the base pad.
• If elevating a unit on a flat roof, use 4” x 4” (or equivalent) stringers positioned
to distribute unit weight evenly and prevent noise and vibration.
3.8 FACTORY-PREFERRED TIE-DOWN METHOD
INSTRUCTIONS:
IMPORTANT: These instructions are intended as a guide to securingequipment for windload ratings of “120 MPH sustained wind load”and “3-second, 150 MPH gust.”While this
procedure is not mandatory, the Manufacturer doesrecommendthat equipment be properly secured in areas where high wind damagemay occur.
STEP 1: Before installing, clear pad of any dirtor debris.
STEP 2: Center basepan on pad, ensuring it is level.
STEP 3: Remove unittop panel by removingscrews around the perimeter of top panel.
STEP 4: Drill4 or 6 holes (1/4” diameter) in the unit basepan only
STEP 5: Select and obtain appropriate concrete or lag screws and flatwashers per
STEP 6: Drillpilot holes in padthrough the basepan clearance holes drilledin Step 4,
STEP 7: Driveconcretescrews or lag screwsthrough
STEP 8: Re-connect fan motor wire leads to contactorper the unit wiringdiagram and
STEP 9: Finish unit installation per Sections 4 – 16 in this manual.
IMPORTANT: The pad mustbe constructed of industry-approved materials, and
must be thickenough to accommodate the concrete fastener.
Disconnect fan motor leads from contactor and lay top panel aside taking care
not to damagethe fan.
per figure 2.
figure 2.
1
ensuring that the holesare at least
used. Use the concretescrew or lag screw manufacturer’srecommended hole
diameter for the pilotholes.
and into the pad. Use flat washersunder the head of the screws. Snug screws
to basepan.
NOTE: Do not over-tighten theconcrete or lag screws.Doing so can weakenor strip
the fastener and causeit to breakor pull out.
lower unit top onto the unit. Takecare to place the fan motor wire conduitin the
slot in thetop of thecontrol box as the top is lowered ontothe unit. Re-install
screws that attach unittop to the unit.
⁄4” deeper than the concrete fastener being
1
⁄4” clearance holes in unit basepan
4.0 REFRIGERANT CONNECTIONS
All units are factory charged with Refrigerant 410A. All models are supplied with
service valves. Keep tube ends sealed until connection is to be made to prevent
system contamination.
5.0 TOOLS REQUIRED FOR INSTALLING &
5.0 SERVICING R-410A MODELS
Manifold Sets:
-Up to 800 PSIG High Side
-Up to 250 PSIG Low Side
-550 PSIG Low Side Retard
Manifold Hoses:
-Service Pressure Ratiing of 800 PSIG
Recovery Cylinders:
-400 PSIG Pressure Rating
-Dept. of Transportation 4BA400 or BW400
CAUTION
!
R-410A systems operate at higher pressures than R-22 systems. Do not use
R-22 service equipment or components on R-410A equipment.
8
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