Rheem RHSL-HM2417AA, RHSL-HM4821AA, RHSL-HM3017AA, RHSL-HM4221AA, RHLL-HM2417AA Installation Instructions Manual
...
WARNING
ISO 9001:2008
INSTALLATION INSTRUCTIONS
AIR HANDLERS
FEATURING INDUSTRY STANDARD R-410A REFRIGERANT:
RHLL High Efficiency
RHSL Standard Efficiency
!
▲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.
SUPERSEDES 92-20521-32-14
92-20521-32-15
TABLE OF CONTENTS
1.0 SAFETY INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2.0 GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.1 Important Information About Efficiency and Indoor Air Quality. . . . . . . . . . . . 5
2.2 Receiving. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Clearances. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.4 Model Number Explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.4A Available Models. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.5 Dimensions and Weights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3.0 APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 Vertical Upflow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.2 Vertical Downflow. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.3 Horizontal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.4 Installation in an Unconditioned Space . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
3.5 Installation in Mobile/Manufactured Homes. . . . . . . . . . . . . . . . . . . . . . . . . 13
4.0 ELECTRICAL WIRING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.1 Power Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Control Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.4 Electrical Wiring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5 Blower Motor Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5A Blower Motor Electrical Data: (-)HSL. . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.5B Blower Motor Electrical Data: (-)HLL. . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.6 Electric Heat Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6A Electric Heat Electrical Data: (-)HSL . . . . . . . . . . . . . . . . . . . . . . . . . . 16
4.6B Electric Heat Electrical Data: (-)HLL . . . . . . . . . . . . . . . . . . . . . . . . . . 19
4.6C Heater Kit Supplemental Information . . . . . . . . . . . . . . . . . . . . . . . . . 22
5.0 AIRFLOW PERFORMANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.1 Airflow Operating Limits (-)HSL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.2 240V Airflow Performance Data (-)HSL. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
5.3 115/208/480V Airflow Performance Data (-)HSL . . . . . . . . . . . . . . . . . . . . . 27
5.4 115/208/240V Airflow Performance Data (-)HLL . . . . . . . . . . . . . . . . . . . . . 29
6.0 DUCTWORK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.0 REFRIGERANT CONNECTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.1 TEV Sensing Bulb . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.2 Condensate Drain Tubing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
7.3 Duct Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.0 AIR FILTER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
9.0 SEQUENCE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.1 Cooling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.2 Heating (electric heat only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.3 Heating (heat pump) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.4 Blower Time Delay (heating or cooling). . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.5 Defrost (defrost heat control). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
9.6 Emergency Heat (heating heat pump). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
9.7 Room Thermostat (anticipator setting). . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
10.0 CALCULATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
10.1 Calculating Temperature Rise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
10.2 Calculating BTUH Heating Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
10.3 Calculating Airflow CFM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
10.4 Calculating Correction Factor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
11.0 PRE-START CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
12.0 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
12.1 Air Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
12.2 Indoor Coil/Drain Pan/Drain Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
12.3 Blower Motor & Wheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
12.4 Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
12.5 Blower Assembly Removal and Replacement. . . . . . . . . . . . . . . . . . . . . . . 37
12.6 Motor Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
12.7 Blower Wheel Replacement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
13.0 REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
14.0 ACCESSORIES - KITS - PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
2
(SEE SECTION 4.0:
WARNING
!
Disconnect all power to unit
before installing or servicing.
More than one disconnect switch
may be required to de-energize
the equipment. Hazardous voltage
can cause severe personal injury
or death.
WARNING
!
If removal of the blower assembly is
required, all disconnect switches
supplying power to the equipment
must be de-energized and locked (if
not in sight of unit) so the field
power wires can be safely removed
from the blower assembly. Failure to
do so can cause electrical shock
resulting in personal injury or
death.
WARNING
!
Because of possible damage to
equipment or personal injury,
installation, service, and maintenance should be performed by a
trained, qualified service personnel. Consumer service is recommended only for filter cleaning/
replacement. Never operate the
unit with the access panels
removed.
ELECTRICAL WIRING)
(SEE SECTION 12.5: BLOWER
ASSEMBLY REMOVAL &
REPLACEMENT)
1.0 SAFETY INFORMATION
WARNING
!
Duct leaks can create an unbalanced system and draw pollutants such as dirt,
dust, fumes and odors into the home causing property damage. Fumes and
odors from toxic, volatile or flammable chemicals, as well as automobile
exhaust and carbon monoxide (CO), can be drawn into the living space
through leaking ducts and unbalanced duct systems causing personal injury
or death (see Figure 1).
• If air-moving equipment or ductwork is located in garages or off-garage storage areas - all joints, seams, and openings in the equipment and duct must
be sealed to limit the migration of toxic fumes and odors including carbon
monoxide from migrating into the living space.
• If air-moving equipment or ductwork is located in spaces containing fuel
burning appliances such as water heaters or boilers - all joints, seams, and
openings in the equipment and duct must also be sealed to prevent depressurization of the space and possible migration of combustion byproducts
including carbon monoxide into the living space.
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 (SEE SECTION 3.2: VERTICAL DOWNFLOW)
!
The RXHB-17, RXHB-21 or RXHB-24 combustible floor base is required when
some units with electric heat are applied downflow on combustible flooring.
Failure to use the base can cause a fire resulting in property damage, personal
injury or death. See CLEARANCES
See the accessory section in this manual for combustible floor base RXHB.
for units requiring a combustible floor base.
WARNING (SEE SECTION 4.3: GROUNDING)
!
The unit must be permanently grounded. Failure to do so can result in electrical shock causing personal injury or death.
WARNING (SEE SECTION 12.0: MAINTENANCE)
!
Units with circuit breaker(s) meet requirements as a service disconnect switch,
however, if access is required to the line side (covered) of the circuit breaker,
this side of the breaker(s) will be energized with the breaker(s) de-energized.
Contact with the line side can cause electrical shock resulting in personal
injury or death.
!
WARNING (SEE SECTION 5.0: DUCTWORK)
Do not, under any circumstances, connect return ductwork to any other heat
producing device such as fireplace insert, stove, etc. Unauthorized use of
such devices may result in fire, carbon monoxide poisoning, explosion, personal injury or property damage.
Continued on next page ➜
3
WARNING
!
PROPOSITION 65: This appliance contains fiberglass insulation.
Respirable particles of fiberglass
are known to the State of California
to cause cancer.
All manufacturer products meet current Federal OSHA Guidelines for
safety. California Proposition 65
warnings are required for certain
products, which are not covered by
the OSHA standards.
California's Proposition 65 requires
warnings for products sold in
California that contain or produce
any of over 600 listed chemicals
known to the State of California to
cause cancer or birth defects such
as fiberglass insulation, lead in
brass, and combustion products
from natural gas.
All “new equipment” shipped for
sale in California will have labels
stating that the product contains
and/or produces Proposition 65
chemicals. Although we have not
changed our processes, having the
same label on all our products facilitates manufacturing and shipping.
We cannot always know “when, or
if” products will be sold in the
California market.
You may receive inquiries from customers about chemicals found in, or
produced by, some of our heating
and air-conditioning equipment, or
found in natural gas used with some
of our products. Listed below are
those chemicals and substances
commonly associated with similar
equipment in our industry and other
manufacturers.
• Glass Wool (Fiberglass) Insulation
• Carbon Monoxide (CO).
• Formaldehyde
• Benzene
More details are available at the
websites for OSHA (Occupational
Safety and Health Administration),
at www.osha.gov
California’s OEHHA (Office of
Environmental Health Hazard
Assessment), at www.oehha.org
Consumer education is important
since the chemicals and substances
on the list are found in our daily
lives. Most consumers are aware
that products present safety and
health risks, when improperly used,
handled and maintained.
and the State of
.
WARNING (SEE SECTION 12.6: MOTOR REPLACEMENT)
!
To avoid electrical shock which can result in personal injury or death, use only
the screws furnished in the motor shell mounting holds. Screws are #8-18 x .25
in. long blunt nose thread forming. Screws longer than 1/4 in. may contact the
motor winding.
WARNING (SEE SECTION 7.0: AIR FILTER)
!
Do not operate the system without filters. A portion of the dust entrained in the
air may temporarily lodge in the duct runs and at the supply registers. Any circulated dust particles could be heated and charred by contact with the air handler elements. This residue could soil ceilings, walls, drapes, carpets and other
articles in the house.
Soot damage may occur with filters in place, when certain types of candles, oil
lamps or standing pilots are burned.
WARNING
!
The first 36 inches of supply air plenum and ductwork must be constructed of
sheet metal as required by NFPA 90B. The supply air plenum or duct must have
a solid sheet metal bottom directly under the unit with no openings, registers
or flexible air ducts located in it. If flexible supply air ducts are used they may
be located only in the vertical walls of a rectangular plenum, a minimum of 6
inches from the solid bottom. Metal plenum or duct may be connected to the
combustible floor base, if not, it must be connected to the unit supply duct
flanges such that combustible floor or other combustible material is not
exposed to the supply air opening from the downflow unit. Exposing combustible (non-metal) material to the supply opening of a downflow unit can
cause a fire resulting in property damage, personal injury or death.
Exceptions to downflow warnings:
• Installations on concrete floor slab with supply air plenum and ductwork
completely encased in not less than 2 inches of concrete (See NFPA 90B).
CAUTION (SEE SECTION 3.3: HORIZONTAL)
!
Horizontal units must be configured for right hand air supply or left hand air
supply. Horizontal drain pan must be located under indoor coil. Failure to use
the drain pan can result in property damage.
CAUTION (SEE SECTION 2.1: RECEIVING)
!
In compliance with recognized codes, it is recommended that an auxiliary
drain pan be installed under all evaporator coils or units containing evaporator
coils that are located in any area of a structure where damage to the building
or building contents may occur as a result of an overflow of the coil drain pan
or a stoppage in the primary condensate drain piping. See accessories for auxiliary horizontal overflow pan RXBM.
NOTICE
!
When used in cooling applications, excessive sweating may occur when unit is
installed in an unconditioned space. This can result in property damage.
NOTICE
!
Improper installation, or installation not made in accordance with the Underwriters
Laboratory (UL) certification or these instructions, can result in unsatisfactory
operation and/or dangerous conditions and are not covered by the unit warranty.
NOTICE
!
In compliance with recognized codes, it is recommended that an auxiliary drain
pan be installed under all evaporator coils or units containing evaporator coils
that are located in any area of a structure where damage to the building or building contents may occur as a result of an overflow of the coil drain pan or a stoppage in the primary condensate drain piping. See accessories section of these
instructions for auxiliary horizontal overflow pan information (model RXBM).
4
NOTICE
!
Use of this air-handler during construction is not recommended. If operation during construction is absolutely required, the following temporary
installation requirements must be followed:
Installation must comply with all Installation Instructions in this manual
including the following items:
• Properly sized power supply and circuit breaker/fuse
• Air-handler operating under thermostatic control;
• Return air duct sealed to the air-handler;
• Air filters must be in place;
• Correct air-flow setting for application
• Removing the coil and storing it in a clean safe place is highly recommended until construction is completed and the outdoor unit is installed.
• Clean air-handler, duct work, and components including coil upon completion of the construction process and verify proper air-handler operating conditions according as stated in this instruction manual.
• NOTE: Electric strip heater elements tend to emit a burning odor for a few
days if dust has accumulated during construction. Heater elements are
easily damaged. Take great care when cleaning them. Low pressure compressed air is recommended for cleaning elements.
2.0 GENERAL INFORMATION
2.1 IMPORTANT INFORMATION ABOUT EFFICIENCY AND INDOOR
2.1 AIR QUALITY
Central cooling and heating equipment is only as efficient as the duct system that carries the cooled or heated air. To maintain efficiency, comfort and good indoor air quality,
FIGURE 1
MIGRATION OF DANGEROUS SUBSTANCES, FUMES, AND ODORS INTO LIVING SPACES
▲WARNING
Carbon Monoxide (CO) Poisoning
Can Cause Severe Injury or Death.
Carbon Monoxide from the exhaust of motor
vehicles and other fuel burning devices can be
drawn into the living space by the operation of the
central heating and air conditioning system.
Exhaust from motor vehicles, generators, garden
tractors, mowers, portable heaters, charcoal and gas
grills, gasoline powered tools, and outdoor camping
equipment contains carbon monoxide, a poisonous
gas that can kill you. You cannot see it, smell it, or taste
it.
•
Do NOT operate an automobile or any engine in a
garage for more than the few seconds it takes to
enter or exit the garage.
•
Do NOT operate any fuel-burning device in an
enclosed or partly enclosed space, or near
building windows, doors or air intakes.
The U.S. Consumer Product Safety Commission (CPSC)
and Health Canada recommend the installation of UL or
CSA certified Carbon Monoxide Alarm(s) in every home.
WARNING
!
Duct leaks can create an unbalanced system and draw pollutants such as dirt,
dust, fumes and odors into the home causing property damage. Fumes and
odors from toxic, volatile or flammable chemicals, as well as automobile
exhaust and carbon monoxide (CO), can be drawn into the living space
through leaking ducts and unbalanced duct systems causing personal injury
or death (see Figure 1).
• If air-moving equipment or ductwork is located in garages or off-garage storage areas - all joints, seams, and openings in the equipment and duct must
be sealed to limit the migration of toxic fumes and odors including carbon
monoxide from migrating into the living space.
• If air-moving equipment or ductwork is located in spaces containing fuel
burning appliances such as water heaters or boilers - all joints, seams, and
openings in the equipment and duct must also be sealed to prevent depressurization of the space and possible migration of combustion byproducts
including carbon monoxide into the living space.
NOTICE
!
Improper installation, or installation not made in accordance with the Underwriters
Laboratory (UL) certification or these instructions, can result in unsatisfactory
operation and/or dangerous conditions and are not covered by the unit warranty.
5
it is important to have the proper balance between the air being supplied to each room
and the air returning to the cooling and heating equipment.
Proper balance and sealing of the duct system improves the efficiency of the heating
and air conditioning system and improves the indoor air quality of the home by reducing
the amount of airborne pollutants that enter homes from spaces where the ductwork
and/or equipment is located. The manufacturer and the U.S. Environmental Protection
Agency’s Energy Star Program recommend that central duct systems be checked by a
qualified contractor for proper balance and sealing.
NOTICE
!
In compliance with recognized codes, it is recommended that an auxiliary
drain pan be installed under all evaporator coils or units containing evaporator coils that are located in any area of a structure where damage to the
building or building contents may occur as a result of an overflow of the
coil drain pan or a stoppage in the primary condensate drain piping. See
accessories section of these instructions for auxiliary horizontal overflow
pan information (model RXBM).
2.2 RECEIVING
Immediately upon receipt, all cartons and contents should be inspected for transit damage. Units with damaged cartons should be opened immediately. If damage is found, it
should be noted on the delivery papers, and a damage claim filed with the last carrier.
• After unit has been delivered to job site, remove carton taking care not to damage
unit.
• Check the unit rating plate for unit size, electric heat, coil, voltage, phase, etc. to be
sure equipment matches what is required for the job specification.
• Read the entire instructions before starting the installation.
• Some building codes require extra cabinet insulation and gasketing when unit is
installed in attic applications.
• If installed in an unconditioned space, apply caulking around the power wires, control
wires, refrigerant tubing and condensate line where they enter the cabinet. Seal the
power wires on the inside where they exit conduit opening. Caulking is required to
pre-vent air leakage into and condensate from forming inside the unit, control box,
and on electrical controls.
• Install the unit in such a way as to allow necessary access to the coil/filter rack and
blower/control compartment.
• Install the unit in a level position to ensure proper condensate drainage. Make sure
unit is level in both directions within 1/8”.
• Install the unit in accordance with any local code which may apply and the national
codes. Latest editions are available from: “National Fire Protection Association, Inc.,
Batterysmarch Park, Quincy, MA 02269.” These publications are:
• ANSI/NFPA No. 70-(Latest Edition) National Electrical Code.
• NFPA90A Installation of Air Conditioning and Ventilating Systems.
• NFPA90B Installation of warm air heating and air conditioning systems.
• The equipment has been evaluated in accordance with the Code of Federal
Regulations, Chapter XX, Part 3280.
2.3 CLEARANCES
• All units are designed for “0” inches clearance to combustible material on all cabinet
surfaces.
• Units with electric heat require a one inch clearance to combustible material for the
first three feet of supply plenum and ductwork.
• Some units require a combustible floor base depending on the heating kW. The fol-
lowing table should be used to determine these requirements.
Model Cabinet Size 17 21 24
Maximum Model Designation kW 15 18 20
Additionally, if these units are installed down-flow, a combustible floor base is
required. See Accessories for Combustible Floor Base RXHB-XX.
Units with electric heating kW equal to
not require a combustible floor base.
• Vertical units require clearance on at least one side of the unit for electrical connec-
tions. Horizontal units require clearance on either top or bottom for electrical connections. Refrigerant and condensate drain connections are made on the front of the unit.
• All units require 24 inches minimum access to the front of the unit for service.
• These units may be installed in either ventilated or nonventilated spaces.
6
or less than the values listed in the table do
2.4 MODEL NUMBER EXPLANATION
FIGURE 2
MODEL NUMBER EXPLANATION
(-) H S L — HM 18 17 J A
DESIGN VARIATION
A = 1STDESIGN
VOLTAGE
A = 115/1/60
D = 480V-3-60
J = 208/240/1/60
CABINET SIZE
17 = 17.5" (600 - 1200 CFM)
21 = 21" (1200 - 1600 CFM)
24 = 24.5" (1600 -1800 CFM)
CAPACITY
18 = 18,000 BTU/H 42 = 42,000 BTU/H
24 = 24,000 BTU/H 48 = 48,000 BTU/H
30 = 30,000 BTU/H 60 = 60,000 BTU/H
36 = 36,000 BTU/H
HM = A/C OR HP MULTI-POSITION
HM = (Vertical Upflow/Horizontal Left is the factory configuration)
REFRIGERANT
L = R-410A
TRADE BRAND
(-) H L L — HM 24 17 J A
HM = A/C OR HP MULTI-POSITION
HM = (Vertical Upflow/Horizontal Left is the factory configuration)
S = STANDARD MODEL (PSC MOTOR)
CLASSIFICATION
H = AIR HANDLER
DESIGN VARIATION
A = 1STDESIGN
VOLTAGE
A = 115/1/60
J = 208/240/1/60
D = 480/3/60
CABINET SIZE
17 = 17.5" (600 - 1200 CFM)
21 = 21" (3821 = 1000 - 1200 CFM)
21 = 21" (4821 = 1400 - 1600 CFM)
24 = 24.5" (1600 - 1800 CFM)
CAPACITY
24 = 18,000 / 24,000 BTU/H
36 = 30,000 / 36,000 BTU/H
38 = 30,000 / 36,000 / 42,000 BTU/H
48 = 42,000 / 48,000 BTU/H
60 = 60,000 BTU/H
REFRIGERANT
L = R-410A
L = HIGH EFFICIENCY (X-13 MOTOR)
CLASSIFICATION
H = AIR HANDLER
TRADE BRAND
7
2.4A AVAILABLE MODELS
AVAILABLE MODELS AT A VOLTAGE
(-)HSL-HM1817AA
(-)HSL-HM2417AA
(-)HSL-HM3017AA
(-)HSL-HM3617AA
(-)HSL-HM4221AA
(-)HSL-HM4821AA
AVAILABLE MODELS AT J VOLTAGE
(-)HLL-HM2417JA
(-)HLL-HM3617JA
(-)HLL-HM4821JA
(-)HLL-HM4824JA
(-)HLL-HM6024JA
(-)HLL-HM3821JA
AVAILABLE MODELS AT D VOLTAGE
(-)HSL-HM3617DA
(-)HSL-HM4221DA
(-)HSL-HM4821DA
(-)HSL-HM4824DA
(-)HLL-HM6024DA
(-)HSL-HM6024DA
(-)HLL-HM2417AA
(-)HLL-HM3617AA
(-)HLL-HM4821AA
(-)HLL-HM4824AA
(-)HLL-HM6024AA
(-)HLL-HM3821AA
(-)HSL-HM1817JA
(-)HSL-HM2417JA
(-)HSL-HM3017JA
(-)HSL-HM3617JA
(-)HSL-HM3621JA
(-)HSL-HM4221JA
(-)HSL-HM4821JA
(-)HSL-HM4824JA
(-)HSL-HM6024JA
Notes:
• Supply circuit protective devices may be fuses or “HACR” type circuit breakers.
• Largest motor load is included in single circuit and multiple circuit 1.
• If non-standard fuse size is specified, use next size larger fuse size.
• J Voltage (208/240V) single phase air handler is designed to be used with single or
three phase 208/240V power. In the case of connecting 3-phase power to the air handler terminal block, bring only two leads to the terminal block. Cap, insulate and fully
secure the third lead.
• The air handlers are shipped from the factory with the proper indoor coil installed, and
cannot be ordered without a coil.
• The air handlers do not have an internal filter rack. An external filter rack or other
means of filtration is required.
8
2.5 DIMENSIONS & WEIGHTS
FIGURE 3
DIMENSIONS AND WEIGHTS
ELECTRICAL CONNECTIONS MAY EXIT TOP OR EITHER SIDE
HIGH VOLTAGE CONNECTION 7/8",
1 3/32", 1 31/32" DIA. KNOCK OUTS.
LOW VOLTAGE CONNECTION
5/8" AND 7/8" KNOCK OUT
(OUTSIDE OF CABINET)
Return Air Opening Dimensions
Model
Cabinet Size
17 157⁄8 193⁄4
21 193⁄8 193⁄4
24 227⁄8 193⁄4
Return Air Return Air Opening
Opening Width Depth/Length
(Inches) (Inches)
SUPPLY AIR
105/16
NOTE: 24" CLEARANCE REQUIRED
IN FRONT OF UNIT FOR FILTER
AND COIL MAINTENANCE.
FLANGES ARE PROVIDED
W
FOR FIELD INSTALLATION
A
H
AUXILIARY DRAIN CONNECTION
3/4" FEMALE PIPE THREAD (NPT)
HORIZONTAL APPLICATION ONLY
PRIMARY DRAIN CONNECTION
3/4" FEMALE PIPE THREAD (NPT)
AUXILIARY DRAIN CONNECTION
3/4" FEMALE PIPE THREAD (NPT)
UPFLOW/DOWNFLOW APPLICATION
ONLY
LIQUID LINE CONNECTION
COPPER (SWEAT)
VAPOR LINE CONNECTION
COPPER (SWEAT)
DIMENSIONAL DATA
MODEL
SIZE
RHLL &
RHSL
1817/2417
3017/3617
3621
3821
4221/4821
4824
6024
REFRIGERANT
CONNECTIONS
SWEAT (IN.) [MM] ID
LIQUID VAPOR
3
/8"
[9.53]
3
/8"
[9.53]
3
/8"
[9.53]
3
/8"
[9.53]
3
/8"
[9.53]
3
/8"
[9.53]
3
/8"
[9.53]
3
/4"
[19.05]
3
/4"
[19.05]
3
/4"
[19.05]
7
/8"
[22.23]
7
/8"
[22.23]
7
/8"
[22.23]
7
/8"
[22.23]
UNIT
HEIGHT
IN. [mm]
421/2"
[1080]
1
/2"
42
[1080]
1
/2"
42
[1080]
501/2"
[1283]
1
/2"
50
[1283]
1
55
/2"
[1410]
1
/2"
55
[1410]
191/2
RETURN AIR OPENING
UPFLOW UNIT SHOWN;
UNIT MAY BE INSTALLED UPFLOW, DOWNFLOW.
HORIZONTAL RIGHT, OR LEFT AIR SUPPLY.
UNIT
WIDTH
“W” IN.
[mm]
1
17
/2"
[444.5]
1
17
/2"
[444.5]
21"
[533.4]
21"
[533.4]
21"
[533.4]
1
/2"
24
[622.3]
1
/2"
24
[622.3]
SUPPLY
DUCT
“A” IN.
[mm]
16"
[406.4]
16"
[406.4]
1
/2"
19
[495.3]
1
/2"
19
[495.3]
1
/2"
19
[495.3]
23"
[581.2]
23"
[581.2]
AIRFLOW
COIL (NOM.) [L/s]
LO HI
600
[283]
1000
[472]
1200
[566]
1000
[472]
1400
[661]
1600
[755]
1800
[850]
800
[378]
1200
[566]
—
1200
[566]
1600
[755]
—
—
2111/16
A-1038-01
UNIT WEIGHT / SHIPPING
WEIGHT (LBS.) [kg]
UNIT WITH
COIL (MAX. kW.)
82/96
[37.1]/[43.5]
92/106
[41.7]/[48.0]
97/112
[43.9]/[50.8]
150/166
[68.0]/[75.2]
150/166
[68.0]/[75.2]
162/180
[73.4]/[81.6]
181/198
[82.1]/[89.8]
9
3.0 APPLICATIONS
3.1 VERTICAL UPFLOW
• Vertical Upflow is the factory configuration for all models (see Figure 3).
• If a side return air opening is required, field fabricate a return air plenum with an opening large enough to supply unit and strong enough to support unit weight.
• If return air is to be ducted, install duct flush with floor. Use fireproof resilient gasket 1/8
to 1/4 in. thick between duct, unit and floor. Set unit on floor over opening.
FIGURE 4
DIMENSIONS FOR FRONT CONNECT COIL
515/16
41/8
31/16
13/16
11/8
11/16
13/8
213/16
51/4
53/8
3.2 VERTICAL DOWNFLOW
Conversion to Vertical Downflow: A vertical upflow unit may be converted to vertical
downflow. Remove the door and indoor coil and reinstall 180° from original position (see
Figure 5).
A second set of coil rails must be field installed for vertical down-flow and horizontal right
applications. Fastener clearance holes will need to be drilled in the cabinet sides (proper
hole locations are marked with “dimpled” for this purpose). Note that the shorter (no
notch) coil rail must be mounted on the left-hand side to provide clearance for the drainpan condensate connection boss.
IMPORTANT: To comply with certification agencies and the National Electric Code for
horizontal right application, the circuit breaker(s) on field-installed electric heater kits
must be re-installed per procedure below so that the breaker switch “on” position and
marking is up and, “off” position and marking is down.
- To turn breaker(s): Rotate one breaker pair (circuit) at a time starting with the one on the
right. Loosen both lugs on the load side of the breaker. Wires are bundles with wire ties,
one bundle going to the right lug and one bundle going to the left lug.
- Using a screwdriver or pencil, lift white plastic tab with hole away from breaker until
breaker releases from mounting opening (see Figure 5).
- With breaker held in hand, rotate breaker so that “on” position is up, “off” position is down
with unit in planned vertical mounting position. Insert right wire bundle into top right
breaker lug, ensuring all strands of all wires are inserted fully into lug, and no wire insulation is in lug.
- Tighten lug as tight as possible while holding circuit breaker. Check wires and make sure
each wire is secure and none are loose. Repeat for left wire bundle in left top circuit
breaker lug.
- Replace breaker by inserting breaker mounting tab opposite white pull tab in opening,
hook mounting tab over edge in opening.
10
FIGURE 5
ROTATING CIRCUIT BREAKER
- With screwdriver or pencil, pull white tab with hole away from breaker while setting that
side of breaker into opening. When breaker is in place, release tab, locking circuit breaker into location in opening.
- Repeat above operation for remaining breaker(s) (if more than one is provided).
- Replace single point wiring jumper bar, if it is used, on line side of breaker and tighten
securely.
- Double check wires and lugs to make sure all are secure and tight. Check to make sure
unit wiring to circuit breaker load lugs match that shown on the unit wiring diagram.
• RXHB combustible floor base is used for all unit sizes. Unit must be centered on combustible base in the width dimension (143/8”). (See Section 14.0 for more information
on the combustible floor base.)
DRIP LOOP: When installing the unit in down-flow or horizontal-right positions, make
sure that the wires coming from the motor form a proper drip loop. This allows water to
cascade off the lowest point of the wiring before it enters the motor head. This may
require cutting the wire tie and installing a new wire tie to form this loop.
WARNING
!
The RXHB-17, RXHB-21 or RXHB-24 combustible floor base is required
when some units with electric heat are applied downflow on combustible
flooring. Failure to use the base can cause a fire resulting in property damage, personal injury or death. See CLEARANCES for units requiring a combustible floor base. See the accessory section in this manual for combustible floor base RXHB.
3.3 HORIZONTAL
Horizontal left is the default factory configuration for “HM” (airflow direction) units.
Conversion to Horizontal: A vertical upflow unit (AU) may be converted to horizontal by
removing the indoor coil and installing horizontal drain pan on coil as shown for right
hand or left hand air supply. Reinstall coil in unit as shown for right or left hand air supply. See Figures 6 & 7. (See Section 14.0 for more information on the Horizontal Adapter
Kit.)
• Rotate unit into the downflow position, with the coil compartment on top and the blower compartment on bottom.
• A second set of coil rails must be field installed for vertical down-flow and horizontal
right applications. Fastener clearance holes will need to be drilled in the cabinet sides
(proper hole locations are marked with “dimples” for this purpose). Note that the shorter
(no notch) coil rail must be mounted on the left-hand side to provide clearance for the
drain-pan condensate connection boss.
• Reinstall the indoor coil 180° from original position. Ensure the retaining channel is fully
engaged with the coil rail. (See Figure 6, Detail A.)
• Secondary drain pan kits RXBM- are required when the unit is configured for the horizontal right position over a finished ceiling and/or living space. (See Section 14.0:
Accessories - Kits - Parts.)
IMPORTANT: Units cannot be installed horizontally laying on or suspended from the
back of the unit.
11
FIGURE 6
VERTICAL DOWNFLOW & HORIZONTAL RIGHT APPLICATIONS
ENSURE THE RETAIN-
ING CHANNEL IS FULLY
ENGAGED WITH THE
RAILS
RAILS
DETAIL A
COIL RAIL.
FIGURE 7
INDOOR COIL AND DRAIN PAN SET-UP
STRAPS
HORIZONTAL ADAPTER
FRONT WATER
CONNECTION
HORIZONTAL
CONNECTION
CONNECTION
KIT
CATCHER
VAPOR LINE
AUXILIARY
DRAIN
PRIMARY
DRAIN
UPFLOW/DOWNFLOW
DRAIN CONNECTION
AUXILIARY
LIQUID LINE
CONNECTION
REAR WATER CATCHER
TOP AIR STOP
VERTICAL
DRAIN PAN
A-1037-01
12
CAUTION
!
Horizontal units must be configured for right hand air supply or left hand air
supply. Horizontal drain pan must be located under indoor coil. Failure to use
the drain pan can result in property damage.
Conversion in Horizontal Direction: Horizontal left-hand supply can be changed to hori-
zontal right-hand supply by removing the indoor coil and reinstalling 180° from original.
(See Figure 5.)
3.4 INSTALLATION IN AN UNCONDITIONED SPACE
The exterior cabinet of an air handler has a greater risk of sweating when installed in an
unconditioned space than when it is installed in the conditioned space. This is primarily
Loading...