Rheem PRL-JEC Installation Manual

INSTALLATION INSTRUCTIONS

RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORT TION!

DO NOT DESTROY THIS MANUAL

PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE BY A SERVICEMAN

WARNING

ANT SAFETY INFORMA

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.

ISO 9001:2008

TWO-STAGE HEAT PUMP OUTDOOR UNITS

(-)PRL-JEC 16 SEER EQUIPPED WITH THE COMFORT CONTROL

SYSTEM™

[ ] INDICATES METRIC CONVERSIONS

SUPERSEDES 92-20522-63-05

92-20522-63-06

TABLE OF CONTENTS

1.0 SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

2.0 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Checking Product Received . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.4 Electrical and Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

2.5 Proper Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.0 LOCATING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Corrosive Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Heat Pump Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3 Operational Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.4 For Units With Space Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.5 Customer Satisfaction Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.6 Unit Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.7 Factory-Preferred Tie-Down Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.0 REFRIGERANT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Tools Required for Installing & Servicing R-410A Models . . . . . . . . . . . . . 9

4.2 Specification of R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.3 Quick Reference Guide for R-410A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.0 REPLACEMENT UNITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6.0 INDOOR COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

6.1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

7.0 INTERCONNECTING TUBING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.1 Vapor & Liquid Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.2 Maximum Length of Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

7.3 Outdoor Unit Installed Above or Below Indoor Coil . . . . . . . . . . . . . . . . . 13

7.4 Tubing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

7.5 Tubing Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

7.6 Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8.0 DEMAND DEFROST CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8.1 Defrost Initiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8.2 Defrost Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.3 Temperature Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.4 Defrost Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.5 Trouble Shooting Demand Defrost . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

9.0 COMPRESSOR CRANKCASE HEAT (CCH) . . . . . . . . . . . . . . . . . . . . . . . . . . 16

10.0 HARD START COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

11.0 HIGH & LOW PRESSURE CONTROLS (HPC AND LPC) . . . . . . . . . . . . . . . . 17

11.1 Evacuation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

12.0 CONDENSING UNITS EQUIPPED WITH COMFORT CONTROL

SYSTEM™. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

12.1 Control Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

12.2 Comfort Control2Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

12.3 Comfort Control2ICC Control Operation . . . . . . . . . . . . . . . . . . . . . . . . . 20

12.4 Active Compressor Protection Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

12.5 Test and Fault Recall Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

12.6 ICC Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26-29

12.7 Conventional 24VAC Thermostat Control Wiring . . . . . . . . . . . . . . . . . . 29

12.8 Typical Thermostat Wiring Diagrams. . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

12.9 ICC Control Operation with Conventional Thermostat Wiring . . . . . . . . . 31

12.10 Active Compressor Protection Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

12.11 Test and Fault Recall Modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

13.0 ELECTRICAL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

13.1 Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

13.2 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

13.3 Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

14.0 START UP & PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

15.0 CHECKING AIRFLOW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

16.0 CHECKING REFRIGERANT CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

16.1 Charging Units with R-410A Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . 39

16.2 Charging By Liquid Pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

16.3 Charging By Weight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

16.4 Final Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

17.0 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

17.1 Dual Fuel Kit Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

17.2 Remote Outdoor Temperature Model . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

17.3 RXME-A02 Communicating 2 Wire Kit . . . . . . . . . . . . . . . . . . . . . . . . . . 40

18.0 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

18.1 Serial Communicating System Initial Startup. . . . . . . . . . . . . . . . . . . . . . 40

18.2 Replacement of Comfort Control2 System™ Control Board . . . . . . . . . . 41

18.3 Electrical Checks Flow Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

18.4 Cooling Mechanical Checks Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . 43

18.5 Defrost Mechanical Checks Flow Chart. . . . . . . . . . . . . . . . . . . . . . . . . . 44

18.6 General Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

18.7 Service Analyzer Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46-50

18.8 Subcooling Calculation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

19.0 WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52-53

1.0 SAFETY INFORMATION

WARNING

HE MANUFACTURER’S WARRANTY DOES NOT COVER ANY DAMAGE OR

T 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 UNAUTH O R I Z ED COMPO N E N T S, ACCE S S O R IE S OR D EV I C ES 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.

WARNING

DISCONNECT ALL POWER TO UNIT BEFORE STARTING MAINTENANCE. FAILUR E TO DO SO CAN C AUSE ELECTR ICAL SHOCK RESULTI NG IN SEVERE PERSONAL INJURY OR DEATH.

WARNING

DO NOT USE OXYGEN TO PURGE LINES OR PRESSURIZE SYSTEM FOR LEAK TEST. OXY GEN REACT S VIOLENTLY WITH O IL, 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 VO LTAGE CON NECTI ONS. F AILURE TO DO SO CAN RESULT IN ELECTRICAL SHO CK, SEVER E PE RSONA L IN JURY O R DEATH.

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.

CAUTION

Only use evaporators approved for use on R-410A systems. Use of existing R-22 evaporators can introduce mineral oil to the R-410A refrigerant forming two different liquids and decreasing oil return to the compressor. This can result in compressor failure.

CAUTION

When coil is installed over a finished ceiling and/or living area, it is recom m e nd ed tha t a sec o n da ry she e t m et a l con d e ns a te p a n be constructed and installed under entire unit. Failure to do so can result in property damage.

CAUTION

THE COMPRESSOR HAS AN INTERNAL OVERLOAD PROTECTOR. UNDER SOME CONDITIONS, IT CAN TAKE UP TO 2 HOURS FOR THIS OVERLOAD TO RESET. MAKE SURE OVERLOAD HAS HAD TIME TO RESET BEFORE CONDEMNING THE COMPRESSOR.

CAUTION

UNIT MAY START SUDDENLY AND WITHOUT WARNING Solid red light indicates a thermostat call for unit operation is present at the ICC control. ICC control will attempt to start unit after short cycle timer expires or when in Active Protection mode will attempt to restart unit prior to Lockout mode.

CAUTION

UNIT MAY START SUDDENLY AND WITHOUT WARNING Solid red light indicates a thermostat call for unit operation is present at the ICC. ICC will attempt to start unit after short cycle timer expires or when in Active Protection mode will attempt to restart unit prior to Lockout mode.

CAUTION

THE TOP OF THE SCROLL COMPRESSOR SHELL IS HOT. TOUCHING THE COMPRESSOR TOP MAY RESULT IN SERIOUS PERSONAL INJURY.

CAUTION

R-410A PRESSURES ARE APPROXIMATELY 60% HIGHER THAN R-22 PRESSURES. USE APPROPRIATE CARE WHEN USING THIS REFRIGERANT. FAILURE TO EXERCISE CARE MAY RESULT IN EQUIPMENT DAMAGE, OR PERSONAL INJURY.

WARNING

TH E MA N UFACTU R ER’S WARRANTY DOES NOT COVER ANY DA M A G E OR DEFECT TO THE AIR CONDITIONER CAUSED BY THE ATTACHMENT OR USE OF ANY CO M PO NE N TS . A C CE S SORIE S OR DEVICES (OTHER THAN THOSE AUTHORIZED BY THE MANU F A C T U R E R ) INTO, ONTO OR IN CO N J UN CT I ON WI T H THE AIR CO N D I TIONER. YOU SHOULD BE AWARE THAT THE USE OF UN A U TH O RI Z E D COMPONENTS, ACCESSORIES OR DEVICES MAY ADVERSELY AFFEC T THE OP E RA T IO N OF THE AIR CONDITIONER AND MAY AL S O EN D A NG ER LIFE AND PROPERTY. THE MANUFACTURER DISCL A I MS ANY RESPO N S IB IL I TY FOR SUCH LO S S OR I N J URY RE S ULTING FROM THE USE OF SUC H UNAUTHORIZED COMPONENTS, ACCESSORIES OR DEVICES.

MATCH ALL COMPONENTS:

• OUTDOOR UNIT

• INDOOR COIL/METERING DEVICE

• INDOOR AIR HANDLER/FURNACE

• REFRIGERANT LINES

2.0 GENERAL INFORMATION

The (-)PRL-series of heat pump are designed to operate using the Comfort Control System™ or traditional 24VAC controls. These units are equipped with the Comfort Control

preferred method of installation is using the Comfort Control have these components to use the Comfort Control

•

• Air handler or furnace equipped with the Comfort Control

• Comfort Control

If your installation does not meet the above requirements, you must use traditional 24VAC controls.

This installation instruction manual contains complete instructions for installation and setup with using the Comfort Control refer to the Engineering Specification Sheets for complete performance data, thermostat, and accessory listings.

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.

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 heat pump model number, electrical characteristics and accessories to determine if they are correct. Check system components (evaporator coil, condensing unit, evaporator blower, etc.) to make sure they are properly matched.

2.2 Application

Before specifying any heat pump equipment, a survey of the structure and a heat loss and heat gain calculation must be made. A heat loss calculation involves identifying all surfaces and openings that lose heat to the surrounding air and quantifying that heat loss. A cooling heat gain calculation makes similar measurements and determines the amount of heat needed to be removed. A heat gain calculation also calculates the extra heat load caused by sunlight and by humidity removal. These factors must be considered before selecting a heat pump system to provide year round comfort. The Air Conditioning Contractors of America (ACCA) J Manual method of load calculation is one recognized procedure for determining the heating and cooling load.

The cooling load calculation determines the heat pump size. There are two capacities that enable the equipment to provide comfort. The first is sensible capacity. Sensible heat is the heat energy measured on the dry bulb thermometer.

The second form of heat is called latent or hidden heat. This is heat held in the humidity in the air. Removing this heat does not affect a thermometer. However, removing the heat held in the moisture in the air greatly increases comfort. A properly sized unit removes both forms of heat, producing a comfortable living space. An oversized system cycles on and off too quickly and does not properly remove humidity, producing an uncomfortable living space. Select the indoor and outdoor equipment combination based on the manufacturer's engineering data.

After the proper equipment combination has been selected, satisfying both sensible and latent requirements, the system must be properly installed. Only then can the unit provide the comfort the manufacturer built into it.

There are several factors that installers must consider.

• Outdoor unit location • Indoor unit blower speed

• Proper equipment evacuation • Supply and return air duct design and sizing

• Refrigerant charge • System air balancing

• Indoor unit air flow • Diffuser and return air grille location and sizing

System™. To take full advantage of the Comfort Control2System™, the

System™ :

(-)PRL heat pump with the Comfort Control

thermostat

ystem™

or conventional 24VAC controls. Please

. Your installation must

System™

SERVICE FITTINGS

LOW VOLTAGE CONNECTION

/8" [22 mm]

HIGH VOLTAGE CONNECTION 1

/32" [34 mm]

LIQUID LINE CONNECTION

SERVICE ACCESS TO ELECTRICAL & VALVES ALLOW 24" [610 mm] CLEARANCE ONE SIDE

/8" [73 mm] DIA. ACCESSORY KNOCKOUTS

VAPOR LINE CONNECTION

HIGH PRESSURE CONTROL MANUAL RESET (FIELD INSTALLED ACCESSORY)

-00003

A-00002

BOTTOM VIEW SHOWING DEFROST CONDENSATE DRAIN OPENINGS (\\\\\\

SHADED AREAS).

2.3 DIMENSIONS

FIGURE 1

DIMENSIONS AND INSTALLATION CLEARANCES

AIR DISCHARGE

ALLOW 60” [1524 mm] CLEARANCE

AIR INLETS (LOUVERS) ALLOW 6” [152 mm] MIN. CLEARANCE 3 SIDES

UNIT MODEL NUMBER EXPLANATION

036 JEC(– ) P R L

–

C = EQUIPPED WITH THE

EC = COMFORT CONTROL

C = SYSTEM™

OOLING CAPACITY

C BTUH x 1000 (NOMINAL CAPACITY)

24 = 24,000 BTU/HR

ACCESS

ANEL

ALLOW 24” [610 mm] SERVICE ACCESS CLEARANCE

REMOTE HEAT PUMP

0 036 = 36,000 BTU/HR 048 = 48,000 BTU/HR

60 = 60,000 BTU/HR

DESIGN SERIES

-410A

16 SEER

LECTRICAL DESIGNATION

E J-208/230-1-60

DIMENSIONAL DATA

TRADE NAME

REQUIRED PUMP-UP INSTALLATION LOCATIONS

BASE PAN

HEIGHT “H” (INCHES)

LENGTH “L” (INCHES)

WIDTH“W” (INCHES)

024, 036, 048, 060HEAT PUMP MODEL (-)PRL

44-3/4 31-1/2

2.4 Electrical And Physical Data

TABLE 1

(-)PRL ELECTRICAL AND PHYSICAL DATA

ELECTRICAL PHYSICAL

ompressor

ated Load

mperes

RLA)

(

ocked Rotor

mperes

LRA)

(

an Motor

ull Load

mperes

FLA)

(

inimum

ircuit

C mpacity

mperes

odel

umber

RPRL-

Rev. 2/24/2010

024JEC 1-60-208/230 10.3 / 10.3 52 1 14/14 20/20 20/20 23 [2.14] 1 152 [4309] 257 [116.6] 264 [119.8]

036JEC 1-60-208/230 16.7 / 16.7 82 1.7 23/23 30/30 35/35 22.22 [2.06] 2 245 [6946] 311 [141.1] 315 [142.9]

48JEC 1-60-208/230 21.2 / 21.2 96 2 29/29 40/40 45/45 22.22 [2.06] 2 256 [7258] 300 [136.1] 322 [146.1]

060JEC 1-60-208/230 25.6 / 25.6 118 2.2 35/35 45/45 50/50 22.22 [2.06] 2 3800 [1793] 284 [8051] 316 [143.3] 343 [155.6]

hase

requency (Hz)

oltage (Volts)

Fuse or HACR

Circuit Breaker

inimum

mperes

aximum

mperes

ace Area

q. Ft. [m

Outdoor Coil Weight

No.

Rows

]

L/s]

[

2300/2800

[1085/1321]

800/3700

2 1321/1746]

[

800/3500

2 1321/1652]

[

Refrig.

Per Circuit Oz. [g]

bs. [kg]

S L

2.5 Proper Installation

Proper sizing and installation of this 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 criteria for energy efficiency when matched with appropriate coil components. However, proper refrigerant charge and proper airflow are critical to achieve rated capacity and efficiency. Installation of this product should follow the manufacturer’s refrigerant charging and airflow instructions. Failure to confirm proper

charge and airflow may reduce energy efficiency and shorten equipment life.

hipping bs. [kg]

3.0 LOCATING UNIT

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

DISCO N N EC T A L L PO W ER T O UN I T B E F OR E S T A RT I NG 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 a good automobile polish will provide some protection.

• A good 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 Heat Pump 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 heat pump.

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 unit in a manner that will not prevent, impair or com-

promise 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 manufacturers’ recommendations, local code recommendations and requirements will take precedence.

• Refrigerant piping and wiring should be properly sized and kept as short as possible to avoid capacity losses and increased operating costs.

• Locate the unit 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 the following:

o Water pouring into the unit from the junction of rooflines, without protective

guttering. Large volumes of water entering the heat pump while in operation can impact fan blade or motor life, and coil damage may occur to a heat pump if moisture cannot drain from the unit under freezing conditions.

o Freezing moisture, or sleeting conditions, can cause the cabinet to ice-over

prematurely and prevent heat pump operation, requiring backup heat, which generally results in less economical operation.

• Closely follow clearance recommendations on Page 6. o 24” to the service panel access

o 60” above heat pump fan discharge (unit top) to prevent recirculation

o 6” to heat pump coil grille air inlets

3.4 For Units With Space Limitations

FOR CONDENSERS WITH SPACE LIMITATIONS

In the event that a space limitation exists, we will permit the following clearances:

Single Unit Applications: 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” 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 heat pump should be located away from the living, sleeping and recreational 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 Unit Mounting

If elevating the heat pump, eithe r on a fla t roof or on a sl ab, obse rve the following guidelines.

• The base pan provided elevates the heat pump 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 (see Figure 2).

NOTE: Do not block drain openings shown in Figure 1.

• If unit must be elevated because of anticipated snow fall, secure unit and elevating stand such that unit and/or stand will not tip over or fall off. Keep in mind that someone may try to climb on unit.

FIGURE 2

ECOMMENDED ELEVATED INSTALLATION

3.7 Factory-Preferred Tie-Down Method

IMPORTANT: The Manufacturer approved/recommended method is a guide to securing equipment for wind and seismic loads. Other methods might provide the same result, but the Manufacturer method is the only one endorsed by Manufacturer for securing equipment where wind or earthquake damage can occur. Additional information is available in the PTS (Product Technial Support) section of the Manufacturer website Rheemote.net and an be found as a listing under each outdoor model. If you do not have access to this site, your Distributor can offer assistance.

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.

4.1 Tools Required For Installing & 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 Rating 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.

4.2 Specifications of R-410A:

Application: R-410A is not a drop-in replacement for R-22; equipment designs must accommodate its higher pressures. It cannot be retrofitted into R-22 heat pumps.

Physical Properties: R-410A has an atmospheric boiling point of -62.9°F and its saturation pressure at 77°F is 224.5 psig.

Composition: R-410A is an azeotropic mixture of 50% by weight difluoromethane (HFC-32) and 50% by weight pentafluoroethane (HFC-125).

Pressure: The pressure of R-410A is approximately 60% (1.6 times) greater than R-22. Recovery and recycle equipment, pumps, hoses and the like need to

have design pressure ratings appropriate for R-410A. Manifold sets need to range up to 800 psig high-side and 250 psig low-side with a 550 psig low-side retard. Hoses need to have a service pressure rating of 800 psig. Recovery cylinders need to have a 400 psig service pressure rating. DOT 4BA400 or DOT BW400.

Combustibility: At pressures above 1 atmosphere, mixture of R-410A and air can become combustible. R-410A and air should never be mixed in tanks or supply

lines, or be allowed to accumulate in storage tanks. Leak checking should never be done with a mixture of R-410A and air. Leak checking can be per-

formed safely with nitrogen or a mixture of R-410A and nitrogen.

4.3 Quick Reference Guide For R-410A

• R-410A refrigerant operates at approximately 60% higher pressure (1.6 times) than R-22. Ensure that servicing equipment is designed to operate with R-410A.

• R-410A refrigerant cylinders are pink in color.

• R-410A, as with other HFC’s is only compatible with POE oils.

• Vacuum pumps will not remove moisture from oil.

• R-410A systems are to be charged with liquid refrigerants. Prior to March 1999, R-410A refrigerant cylinders had a dip tube. These cylinders should be kept upright for equipment charging. Post March 1999 cylinders do not have a dip tube and should be inverted to ensure liquid charging of the equipment.

• Do not install a suction line filter drier in the liquid line.

• A liquid line filter drier is standard on every unit. Only manufacturer approved liquid line filter driers can be used. These are Sporlan (CW083S) and Alco (80K083S) driers. These filter driers are rated for minimum working pressure of 600 psig.

• Desiccant (drying agent) must be compatible for POE oils and R-410A.

5.0 REPLACEMENT UNITS

To prevent failure of a new condensing unit, the existing evaporator tubing system must be correctly sized and cleaned or replaced. Care must be exercised that the expansion device is not plugged. For new and replacement units, a liquid line filter drier should be installed and refrigerant tubing should be properly sized. Test the oil for acid. If positive, a suction line filter drier is mandatory.

IMPORTANT: WHEN REPLACING AN R-22 UNIT WITH AN R-410A UNIT, EITHER REPLACE THE LINE SET OR ENSURE THAT THE EXISTING LINE SET IS THOROUGHLY CLEANED OF ANY OLD OIL OR DEBRIS.

6.0 INDOOR COIL

REFER TO INDOOR COIL MANUFACTURER’S INSTALLATION INSTRUCTIONS.

IMPORTANT: The manufacturer is not responsible for the performance and opera-

tion of a mismatched system, or for a match listed with another manufacturer’s coil.

CAUTION

NOTE: All (-)PRL units must be installed with a TXV Evaporator.

The thermostatic expansion valve is specifically designed to operate with R-410A.

DO NOT use an R-22 TXV or evaporator. The existing evaporator must be replaced with the factory specified TXV evaporator specifically designed for R-410A.

6.1 Location

Do not install the indoor coil in the return duct system of a gas or oil furnace. Provide a service inlet to the coil for inspection and cleaning. Keep the coil pitched toward the drain connection.

CAUTION

When coil is in s t a ll e d ov e r a finishe d ceil i n g an d / o r livin g area , it is recom m e nd ed t h at a s e co n da r y s h e et me t a l c o n de n sa te p a n b e constr ucted and installed under en tire unit. Failure to do so ca n result in property damage.

7.0 INTERCONNECTING TUBING

7.1 Vapor and Liquid Lines

Keep all lines sealed until connection is made.

Make connections at the indoor coil first.

Refer to Line Size Information in Tables 4 and 5 for correct size and multipliers to be used to determine capacity for various vapor line diameters and lengths of run. The losses due to the lines being exposed to outdoor conditions are not included.

The factory refrigeration charge in the outdoor unit is sufficient for the unit and 15 feet of standard size interconnecting liquid and vapor lines. For different lengths, adjust the charge as indicated below.

1/4” ± .3 oz. per foot 5/16” ± .4 oz. per foot 3/8” ± .6 oz. per foot 1/2” ± 1.2 oz. per foot

7.2 Maximum Length of Lines

The maximum length of interconnecting line is 150 feet. Always use the shortest length possible with a minimum number of bends. Additional compressor oil is not required for any length up to 150 feet.

NOTE: Excessively long refrigerant lines cause loss of equipment capacity.

7.3 Outdoor Unit Installed Above or Below Indoor Coil

Use the following guidelines when installing the unit:

1. Expansion Valve Coil:

a. The vertical separation cannot exceed the value in Tables 4 and 5.

b. No changes are required for expansion valve coils.

2. It is recommended to use the smallest liquid line size permitted to minimize the system charge.

3. Tables 4 and 5 may be used for sizing horizontal runs.

7.4 Tubing Installation

Observe the following when installing correctly sized type “L” refrigerant tubing between the condensing unit and evaporator coil:

• If a portion of the liquid line passes through a hot area where liquid refrigerant can be heated to form vapor, insulating the liquid line is required.

• Use clean, dehydrated, sealed refrigeration grade tubing.

• Always keep tubing sealed until tubing is in place and connections are to be made.

• Blow out the liquid and vapor lines with dry nitrogen before connecting to the outdoor unit and indoor coil. Any debris in the line set will end up plugging the expansion device.

• As an added precaution, a high quality filter drier is standard on R-410A units.

• Do not allow the vapor line and liquid line to be in contact with each other. This causes an undesirable heat transfer resulting in capacity loss and increased power consumption. The vapor line must be insulated.

• If tubing has been cut, make sure ends are deburred while holding in a position to prevent chips from falling into tubing. Burrs such as those caused by tubing cutters can affect performance dramatically, particularly on small liquid line sizes.

• For best operation, keep tubing run as short as possible with a minimum number of elbows or bends.

• Locations where the tubing will be exposed to mechanical damage should be avoided. If it is necessary to use such locations, the copper tubing should be housed to prevent damage.

• If tubing is to be run underground, it must be run in a sealed watertight chase.

• Use care in routing tubing and do not kink or twist. Use a good tubing bender on the vapor line to prevent kinking.

• Route the tubing using temporary hangers, then straighten the tubing and install permanent hangers. Line must be adequately supported.

• The vapor line must be insulated to prevent dripping (sweating) and prevent performance losses. Armaflex and Rubatex are satisfactory insulations for this purpose. Use 1/2” minimum insulation thickness, additional insulation may be required for long runs.

• Check Table 4 for the correct vapor line size. Check Table 5 for the correct liquid line size.

TABLE 4

SUCTION LINE SIZING – DUAL SPEED HEAT PUMP

Allowed suction line size is determined by total line length on oil return. Liquid size determines total line length and vertical separation. After selecting allowed suction line size by outdoor unit position, see the liquid line chart for allowable vertical height and total line length.

Standard Line

onnection

-)PRL

(

024 3/4” [19.05] 3/4” [19.05]

-036 3/4” [19.05] 3/4” [19.05]

048 7/8” [22.23] 3/4” [19.05]

-060

Size

nch (I.D.) [mm]

7/8” [22.23] 7/8” [22.23]

Line Size Inch O.D.)

(

mm]

[

/8” [15.88]

7/8” [22.23]

5/8” [15.88]

7/8” [22.23]

/8” [15.88]

/8” [22.23]

3/4” [19.05]

1-1/8” [28.58]

SUCTION LINE SIZE

Outdoor unit ABOVE Indoor Coil

5 [7.62] 50 [15.24] 75 [22.86] 100 [30.48] 125 [38.1] 150 [45.72]