Rheem 14PJM Installation Manual
RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION!
!
DO NOT DESTROY THIS 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 TH IS UN IT. 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
!
ISO 9001:2008
INSTALLATION INSTRUCTIONS
13 & 14.5 SEER SERIES
HEAT PUMPS
11⁄2 - 5 TONS FEATURING
NEW INDUSTRY STANDARD
R-410A REFRIGERANT R-410
(IN CERTAIN
MATCHED SYSTEMS)
SUPERSEDES 92-20522-75-08
92-20522-75-09
TABLE OF CONTENTS
1.0 SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Checking Product Received. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
.3 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2
2.4 Electrical and Physical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.0 LOCATING UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Corrosive Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Heat Pump Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Operational Issues. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 For Units With Space Limitations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5 Customer Satisfaction Issues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
.6 Unit Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
3
3.7 Factory-Preferred Tie-Down Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.0 REFRIGERANT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.0 REPLACEMENT UNITS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.0 INDOOR COIL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.0 INTERCONNECTING TUBING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.1 Vapor & Liquid Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7.2 Maximum Length of Lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.3 Vertical Separation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.4 Tubing Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
7.5 Tubing Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
7.6 Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
8.0 DEMAND DEFROST CONTROL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.1 Defrost Initiation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.2 Defrost Termination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.3 Temperature Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.4 Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8.5 Trouble Shooting Demand Defrost Operation . . . . . . . . . . . . . . . . . . . . . . . 16
8.6 High/Low Pressure Control Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.7 Enhanced Feature Defrost Control Diagnostic Codes. . . . . . . . . . . . . . . . . 17
9.0 START-UP – CHECKING AIRFLOW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
10.0 EVACUATION AND LEAK TESTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
10.1 Evacuation Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
10.2 Final Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
11.0 CHECKING REFRIGERANT CHARGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11.1 Charging Units With R-410A Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
11.2 Measurement Device Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
11.3 Charging By Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
11.4 Gross Charging By Pressures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
11.5 Final Charge By Sub-Cooling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
11.6 Finishing Up Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
12.0 ELECTRICAL WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
12.1 Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
12.2 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
12.3 Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
13.0 FIELD INSTALLED ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
13.1 Compressor Crankcase Heat. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
13.2 Low Ambient Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
13.3 High Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
13.4 Heat Pump Thermostat Warning Light Kit RXPX-D01. . . . . . . . . . . . . . . . . 25
14.0 SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
14.1 Single Pole Compressor Contactor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
15.0 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
15.1 Electrical Checks Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
15.2 Cooling Mechanical Checks Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
15.3 Heating Mechanical Checks Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
15.4 Defrost Mechanical Checks Flow Chart. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
15.5 General Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
15.6 Service Analyzer Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32-36
16.0 WIRING DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
16.1 Enhanced Defrost Control - PSC Motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
16.2 Enhanced Defrost Control - ECM Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2
1.0 SAFETY INFORMATION
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
!
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.
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 unit must be permanently grounded. Failure to do so can cause electrical shock resulting in severe 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.
CAUTION
When coil is installed over a finished ceiling and/or living area, it is
recommended that a seconda ry sheet metal conden sa te p an be
constructed and installed under entire unit. Failure to do so can result
in property damage.
CAUTION
Single-pole contactors are used on all standard single-phase units up
through 5 tons. Caution must be exercised when servicing as only one leg
of the power supply is broken with the contactor.
3
2.0 GENERAL
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.
ccessories or devices (other than those authorized by the manufactur-
A
er) 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.
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.The information contained in this manual has been prepared to assist in the proper installation, operation and maintenance of the heat pump 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
heat pump specification sheet should be used.
MATCH ALL COMPONENTS:
• OUTDOOR UNIT
• INDOOR COIL/METERING DEVICE
• INDOOR AIR HANDLER/FURNACE
• REFRIGERANT LINES
2.2 APPLICATION
Before installing any heat pump 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
2.3 DIMENSIONS (SEE FIGURE 1)
L
H
SEE DETAIL A
w
A-00008
IGURE 1
F
DIMENSIONS
*
AIR DISCHARGE: ALLOW
60” [1524 mm] MINIMUM
CLEARANCE.
AIR INLETS
(LOUVERED PANELS) ALLOW 6”
[152.4 mm]
MINIMUM
CLEARANCE
SERVICE ACCESS
ALLOW 24” [609.6 mm]
CLEARANCE
2"
[50.8 mm]
BASERAIL*
*The 3, 31⁄2, 4 & 5 ton
models do not feature
a baserail.
DIMENSIONAL DATA
NOTE: GRILLE APPEARANCE
MAY VARY.
BASE PAN (BOTTOM VIEW)
DO NOT OBSTRUCT DRAIN HOLES
(SHADED).
13 SEER 18, 24 —
14.5 SEER
Height “H” (in.) [mm]
Length “L” (in.) [mm]
Width “W” (in.) [mm]
30 36
— 18, 24
—
261/4 [666.7] 261/4 [666.7] 261/4 [666.7]
5
/8 [600] 275/8 [701.6] 275/8 [701.6]
23
23
5
/8 [600]
5
/8 [701.6]
27
5
27
/8 [701.6]
30 36, 42, 48, 60
273/8 [695.3] 353/8 [898.5]
315/8 [803.2] 315/8 [803.2]
315/8 [803.2] 315/8 [803.2]
42, 48, 60
*NOTE: “H” dimension
includes baserails
and/or basepan.
5
2.4 ELECTRICAL & PHYSICAL DATA (SEE TABLE 1)
TABLE 1
LECTRICAL AND PHYSICAL DATA – 13 SEER
E
LECTRICAL DATA PHYSICAL DATA
E
use or HACR
an Motor
odel
M
Number
Rev.7/29/2009
18 1-60-208-230 9/9 48 0.6 12/12 15/15 20/20 11.06 [1.03] 1 1700 [802] 91 [2580] 144 [65.3] 152 [68.9]
4 1-60-208-230 12.8/12.8 58.3 0.6 17/17 20/20 25/25 11.06 [1.03] 1 2370 [1118] 91 [2580] 130 [59] 138 [62.6]
2
0 1-60-208-230 14.1/14.1 73 0.8 19/19 25/25 30/30 13.72 [1.27] 1 2800 [1321] 101 [2863] 198 [89.8] 208 [94.3]
3
6 1-60-208-230 17/17 96.7 1.2 23/23 30/30 35/35 16.39 [1.52] 1 3575 [1687] 109 [3090] 215 [97.5] 227 [103]
3
2 1-60-208-230 21.8/21.8 112 1.2 29/29 35/35 50/50 21.85 [2.03] 1 3575 [1687] 150 [4252] 202 [91.6] 214 [97.1]
4
8 1-60-208-230 21.8/21.8 117 1.2 29/29 35/35 50/50 21.85 [2.03] 1 3575 [1687] 141 [3997] 205 [93] 217 [98.4]
4
60 1-60-208-230 26.3/26.3 134 1.2 35/35 45/45 60/60 21.85 [2.03] 1 3575 [1687] 228 [6464] 209 [94.8] 221 [100.2]
ELECTRICAL AND PHYSICAL DATA – 14.5 SEER
odel
M
Number
Rev. 7/29/2009
18 1-60-208/230 9/9 48 0.08 13/13 15/15 20/20 13.72 [1.27] 1 2590 [1222] 101.6 [2880] 154 [69.9] 164 [74.4]
24 1-60-208/230 12.8/12.8 58.3 0.08 17/17 25/25 25/25 13.72 [1.27] 1 2590 [1222] 100.8 [2858] 155 [70.3] 165 [74.8]
30 1-60-208/230 14.1/14.1 73 1.23 19/19 25/25 30/30 16.39 [1.52] 1 2595 [1225] 117.8 [3340] 118.5 [53.8] 181 [82.1]
36 1-60-208/230 16.7/16.7 79 1.3 23/23 30/30 35/35 21.85 [2.03] 1 3575 [1687] 136.5 [3870] 193 [87.5] 207 [93.9]
42 1-60-208/230 17.9/17.9 112 1.33 24/24 30/30 40/40 21.85 [2.03] 1 3575 [1687] 162.4 [4604] 193 [87.5] 208 [94.3]
48 1-60-208/230 21.8/21.8 117 2.8 31/31 40/40 50/50 21.85 [2.03] 2 3360 [1586] 258.4 [7326] 265 [120.2] 280 [127]
60 1-60-208/230 26.4/26.4 134 2.8 36/36 45/45 60/60 21.85 [2.03] 2 3360 [1586] 284 [8051] 265 [120.2] 280 [127]
NOTES:
➀ 20 Fins per inch [mm]
➁ Factory charged for 15 ft. [4.6 m] of line set
Phase
requency (Hz)
F
Voltage (Volts)
Phase
Frequency (Hz)
oltage (Volts)
V
ated Load
R
Amperes
RLA)
(
Rated Load
Amperes
RLA)
(
ocked Rotor
L
Amperes
LRA)
(
Locked Rotor
Amperes
LRA)
(
F
ull Load
F
Amperes
FLA)
(
LECTRICAL DATA PHYSICAL DATA
E
Fan Motor
ull Load
F
Amperes
FLA)
(
inimum
M
ircuit
C
Ampacity
mperes
A
Minimum
ircuit
C
Ampacity
mperes
A
F
Circuit Breaker
Minimum
mperes
A
Fuse or HACR
Circuit Breaker
inimum
M
Amperes
Maximum
mperes
A
aximum
M
Amperes
ace Area
F
Face Area
Sq. Ft.
Sq. Ft.
m
[
2
m
[
utdoor Coil WeightCompressor
O
No.
ows
R
2
]
utdoor Coil WeightCompressor
O
N
Rows
]
CFM
L/s]
[
o.
FM
C
[L/s]
efrig.
R
er
P
Circuit
z. [g]
O
Refrig.
er
P
Circuit
z. [g]
O
Net
bs. [kg]
L
et
N
Lbs. [kg]
Shipping
bs. [kg]
L
hipping
S
Lbs. [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.
6
!
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 coil 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 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 unit where water run off will not create a problem with the equip-
ment. 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 (See Figure 1).
o 24” [609.6 mm] to the service panel access
o 60” [1524 mm] above heat pump fan discharge (unit top) to prevent recircula-
tion
o 6” [152.4 mm] to heat pump coil grille air inlets (per heat pump).
IMPORTANT: Remove attached shipping strap. Failure to remove strap could result
in internal tubing stress. Plastic strap can be cut off from exterior of the unit and left
inside of unit. See page 30.
3.4 FOR UNITS WITH SPACE LIMITATIONS
In the event that a space limitation exists, we will permit the following clearances:
Single Unit Applications: Clearances below 6 inches [152.4 mm] will reduce unit
capacity and efficiency. Do not reduce the 60-inch [1524 mm] discharge, or the 24inch [609.6 mm] service clearances.
Multiple Unit Applications: When multiple heat pump grille sides are aligned, a 6inch [152.4 mm] per unit clearance is recommended, for a total of 12" [304.8 mm]
between two units. Two combined clearances below 12 inches [304.8 mm] will
reduce capacity and efficiency. Do not reduce the 60-inch [1524 mm] discharge, or
24-inch [609.6 mm] service, clearances.
7
FIGURE 2
ECOMMENDED ELEVATED INSTALLATION
R
• Do not obstruct the bottom drain opening in the heat pump base pan. It is
essential to provide defrost condensate drainage to prevent possible refreezing
of the condensation. Provide a base pad for mounting the unit, which is slightly
pitched away from the structure. Route condensate off the base pad to an area
which will not become slippery and result in personal injury.
• Where snowfall is anticipated, the heat pump must be elevated above the base
pad to prevent ice buildup that may crush the tubing of the heat pump coil or
cause fin damage. Heat pump units should be mounted above the average
expected accumulated snowfall for the area.
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, either on a flat roof or on a slab, observe the
following guidelines.
• The base pan provided elevates the heat pump 2” [50.8 mm] above the base
pad.
• If elevating a unit on a flat roof, use 4” x 4” [101.6 mm x 101.6 mm] (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.
3.7 FACTORY-PREFERRED TIE-DOWN METHOD FOR OUTDOOR UNITS
IMPORTANT: The Manufacturers approved/recommended method is a guide to securing equipment for wind and seismic loads. Other methods might provide the same result,
but the Manufacturer’s method is the only one endorsed by the Manufacturer for securing equipment where wind or earthquake damage can occur. Additional information is
available in the PTS (Product Technical Support) section of the Manufacturer’s website
Rheemote.net and can be found as a listing under each outdoor model. If you do not
have access to this site, your Distributor can offer assistance.
8
4.0 REFRIGERANT CONNECTIONS
All units are factory charged with Refrigerant 410A for 15 ft. [4.6 m] of line set. All
models are supplied with service valves. Keep tube ends sealed until connection is
to be made to prevent system contamination.
5.0 REPLACEMENT UNITS
To prevent failure of a new heat pump unit, the existing 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 liquid line filter drier is mandatory.
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.
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 installed over a finished ceiling and/or living area, it is
recommended that a seconda ry sheet metal conden sa te p an be
constructed and installed under entire unit. Failure to do so can 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 2 and 3 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 15 feet [4.6 m] of
interconnecting lines. The factory refrigeration charge in the outdoor unit is sufficient
for the unit and 15 feet [4.6 m] of standard size interconnecting liquid and vapor
lines. For different lengths, adjust the charge as indicated below.
1/4” ± .3 oz. per foot [6.35 mm ± 8.5 g]
5/16” ± .4 oz. per foot [7.9 mm ± 11.3 g]
3/8” ± .6 oz. per foot [9.5 mm ± 17 g]
1/2” ± 1.2 oz. per foot [12.7 mm ± 34 g]
9
7.2 MAXIMUM LENGTH OF LINES
The maximum length of interconnecting line is 150 feet [45.7 m]. 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 [45.7 m].
NOTE: Excessively long refrigerant lines cause loss of equipment capacity.
7.3 VERTICAL SEPARATION
eep the vertical separation to a minimum. Use the following guidelines when
K
installing the unit:
1. DO NOT exceed the vertical separations as indicated on Table 3.
2. It is recommended to use the smallest liquid line size permitted to minimize system charge which will maximize compressor reliability.
3. Table 3 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 it is recommended that a high quality, bi-directional filter drier is installed in the liquid line.
• 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 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” [12.7 mm] minimum insulation thickness, additional insulation may be required for long runs.
• Check Table 2 for the correct vapor line size. Check Table 3 for the correct liquid line size.
10
7.5 TUBING CONNECTIONS
Indoor coils have only a holding charge of dry nitrogen. Keep all tube ends sealed
until connections are to be made.
• Use type “L” copper refrigeration tubing. Braze the connections with accepted
industry practices.
• Be certain both refrigerant shutoff valves at the outdoor unit are closed.
• Clean the inside of the fittings before brazing.
• Remove the cap and schrader core from service port to protect seals from heat
damage.
• Use an appropriate heatsink material around the copper stub and the service
valves before applying heat.
• IMPORTANT: Do not braze any fitting with the TEV sensing bulb attached.
• Braze the tubing between the outdoor unit and indoor coil. Flow dry nitrogen
into a service port and through the tubing while brazing.
• The service valves are not backseating valves. To open the valves, remove the
valve cap with an adjustable wrench. Insert a 3/16” [4.7 mm] or 5/16” [7.9 mm] hex
wrench into the stem. Back out counterclockwise.
• Replace the valve cap finger tight then tighten an additional 1/2 hex flat for a
metal-to-metal seal.
7.6 LEAK TESTING
• Pressurize line set and coil through service fittings with dry nitrogen to 150
PSIG [1034.2 kPa] maximum. Leak test all joints using liquid detergent. If a
leak is found, relieve pressure and repair.
11
TABLE 2
SUCTION LINE LENGTH/SIZE VS CAPACITY MULTIPLIER (R-410A)
Unit Size
Suction Line Connection Size
Suction Line Run - Feet [m]
ptional
O
25’ [7.6] Standard
— Optional
Optional
50’ [15.24] Standard
— Optional
Optional
100’ [30.5] Standard
— Optional
Optional
150’ [45.7] Standard
— Optional
NOTES:
*Standard line size
Using suction line larger than shown in chart will result in poor oil return and is not recommended.
1 1/2 Ton 2 Ton 2 1/2 Ton 3 Ton 3 1/2 Ton 4 Ton 5 Ton
3/4”
[19] I.D.
5/8 [15.9] Opt.
3/4* [19] Std.
—
3/4”
[19] I.D.
5/8 [15.9] Opt.
3/4* [19] Std.
—
3/4”
[19] I.D.
5/8 [15.9] Opt.
3/4* [19] Std.
7/8 [22.2] Opt.
[19] I.D.
5/8 [15.9] Opt.
3/4* [19] Std.
7/8 [22.2] Opt.
1.00 1.00 1.00 1.00 1.00 1.00 1.00
1.00 1.00 1.00 1.00 1.00 1.00 1.00
——1.00 —— ——
0.98 0.98 0.96 0.98 0.99 0.99 0.99
0.99 0.99 0.98 0.99 0.99 0.99 0.99
——0.99 —— ——
0.95 0.95 0.94 0.96 0.96 0.96 0.97
0.96 0.96 0.96 0.97 0.98 0.98 0.98
——0.97 —— ——
0.92 0.92 0.91 0.94 0.94 0.95 0.94
0.93 0.94 0.93 0.95 0.96 0.96 0.97
——0.95 —— ——
3/4”
7/8”
[22.2] I.D.
3/4 [19] Opt.
7/8* [22.2] Opt.
—
7/8”
[22.2] I.D.
7/8 [22.2] Opt.
1 1/8* [28.6] Std.
—
7/8”
[22.2] I.D.
7/8 [22.2] Opt.
1 1/8* [28.6] Std.
—
12
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