Rudd RHPN-HM2421JA Installation Manual
FORM NO. H11-528
Supersedes Form No. H11-526 Rev. 1
AIR HANDLERS
AIR HANDLERS
RHPN- SERIES – 18 SEER
featuring Earth-Friendly
R-410A Refrigerant
Features
■ Includes an energy efficient GE
®
ECM®Motor, which in
most applications, enhances the SEER rating of the outdoor unit. It also slowly ramps its speed up for quiet operation and enhanced customer satisfaction.
■ Versatile 4-way convertible design for upflow, downflow,
horizontal left and horizontal right applications.
■ Nominal airflow up to 1.0" external static pressure.
■ Factory-installed high efficiency indoor coil.
■ Sturdy cabinet construction with 1.0 inch [25.4 mm] of
foil faced insulation for excellent sound and insulating
characteristics.
■ Field-installed auxiliary electric heater kits provide exact
heat for indoor comfort. Kits include circuit breakers which
meet U.L. and cUL requirements for service disconnect.
■ Dip switch settings for selectable, customized cooling air-
flow over a wide variety of applications.
■ On-demand dehumidification terminal that adjusts airflow
to help control humidity for unsurpassed comfort in cooling mode.
■ External filter required.
earth friendly refrigerant
2 Rheem Manufacturing Company
RHPN- Series
■ Quiet, efficient ECM motor technology providing nominal airflow
up to 1.0 inch [25 kPa] of external static pressure.
■ Interface board with dip switches conveniently located in the
blower compartment allows for precise, field selectable airflow
to meet the requirements of particular applications.
■ Selectable continuous fan “on” options.
■ Compact unit design.
■ Attractive pre-painted cabinet exterior.
■ Rugged steel cabinet construction, designed for added
strength and versatility.
■ 1.0" foil faced insulation mechanically retained in blower
compartment.
■ Four leg rubber insulated motor mount.
■ Field-installed auxiliary heater kit includes circuit breakers that
meet UL and cUL requirements as a service disconnect switch.
■ Blower housing with integrated controls, motor and blower.
Slide out design for service and maintenance convenience.
■ Field convertible for vertical upflow, vertical downflow, horizon-
tal left hand or right hand air supply.
■ Combustible floor base accessory available when required for
downflow installations on combustible floors.
■ Indoor coil design provides low air side pressure drop, high
performance and extremely compact size. All coils come with
PVC condensate elbow standard.
■ Coils are constructed of aluminum fins bonded to internally
grooved copper tubing.
■ Molded polymer corrosion resistant condensate drain pan is
provided on all indoor coils.
■ Supply duct flanges provided as standard on air handler
cabinet.
■ Provisions for field electrical connections available from either
side or top of the air handler cabinet.
■ Connection point for high voltage wiring is inside the air han-
dler cabinet. Low voltage connection is made on the outside of
the air handler cabinet.
■ Concentric knockouts are provided for power connection to
cabinet. Installer may pull desired hole size up to 2 inches
[51 mm] for 1
1
/2 inch [38 mm] conduit.
■ Internal checked TX valves are used on the Heat Pump indoor
coil for more quiet refrigerant metering.
■ Front refrigerant and drain connections.
[ ] Designates Metric Conversions
Engineering Features
GENERAL TERMS OF LIMITED WARRANTY
Rheem will furnish a replacement for any part of this product
which fails in normal use and service within the applicable
periods stated, in accordance with the terms of the limited
warranty.
For Complete Details of the Limited Warranty, Including Applicable Terms
and Conditions, See Your Local Installer or Contact the Manufacturer for
a Copy.
Rheem Prestige Series®equipment features a 10-year
limited parts warranty.*
*This 10-year limited parts warranty is applicable only to single-phase
products installed in residential applications.
Rheem Manufacturing Company 3
RHPN—HM2421JA
Design Variation
A = 1st Design
Voltage
J = 208/240/1/60
Cabinet Size
21 = 21" [533.4 mm] (600-1200 CFM)
Capacity
24 = 18,000/24,000 BTUH
[5.27 to 7.03 kW]
HM = A/C or HP, Multi-Position
(Upflow & Horizontal Left is the factory configuration)
Refrigerant
N = R-410A
P = 18 SEER Premium Model
Classification
H = Air Handler
Rheem
MODEL NUMBER DATA
NOTES:
➀ Electrical Heat Designation: See electrical heat electrical data for actual heater kW represented by number above.
➁ Electric Heater: BTUH - (heater watts + motor watts) x 3.412 (see airflow table for motor watts).
➂ The air handlers are shipped from the factory with the proper indoor coil installed, and cannot be ordered without a coil.
➃ Electric heat elements are field-installed items.
➄ The air handlers do not have an internal filter rack. An external filter rack or other means of filtration is required.
[ ] Designates Metric Conversions
Electrical Designation & Airflow Performance Information
J = 208/240V, 1 PH, 60 Hz
Model
2421 21 = 21.0"
Cabinet
Size
Control
Designation
S = Circuit Breaker(s)
05
07
10
1) Motor H.P. [W]
2) Blower CFM [L/s]
1st/2nd Stage
3) Blower Wheel
Dia./Width [mm]
4) Tonnage
1) 1/3 H.P. [249]
2) 600/800 CFM [283/378]
3) 10 x 8 [254 x 203]
4) 2 Ton
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