Rheem RHWB-04WMP36A User manual

92-24161-94-05
SUPERSEDES 92-24161-94-04
NSTALLAT ON NSTRUCT ONS
HYDRON C A R HANDLER
RHWB-
DO NOT DESTROY THIS MANUAL. PLEASE READ CAREFULLY AND KEEP
IN A SAFE PLACE FOR FUTURE REFERENCE BY QUALIFIED SERVICE PERSONNEL.
ISO 9001:2008

2
MPROPER NSTALLAT ON, OR
NSTALLAT ON NOT MADE N
ACCORDANCE W TH THE
UNDERWR TERS LABORATORY
(UL) CERT F CAT ON OR THESE
NSTRUCT ONS, CAN RESULT N
UNSAT SFACTORY OPERAT ON
AND/OR DANGEROUS COND -
T ONS AND ARE NOT COVERED
BY THE UN T WARRANTY.
DUCT LEAKS CAN CREATE AN
UNBALANCED SYSTEM AND
DRAW POLLUTANTS SUCH AS
D RT, DUST, FUMES AND ODORS
NTO THE HOME CAUS NG
PROPERTY DAMAGE. FUMES
AND ODORS FROM TOX C,
VOLAT LE OR FLAMMABLE
CHEM CALS, AS WELL AS AUTO-
MOB LE EXHAUST AND CARBON
MONOX DE (CO), CAN BE DRAWN
NTO THE L V NG SPACE
THROUGH LEAK NG DUCTS AND
UNBALANCED DUCT SYSTEMS
CAUS NG PERSONAL NJURY OR
DEATH (SEE F GURE 2).
• F A R-MOV NG EQU PMENT OR
DUCTWORK S LOCATED N
GARAGES OR OFF-GARAGE
STORAGE AREAS - ALL JO NTS,
SEAMS, AND OPEN NGS N THE
EQU PMENT AND DUCT MUST
BE SEALED TO L M T THE
M GRAT ON OF TOX C FUMES
AND ODORS NCLUD NG CAR -
BON MONOX DE FROM
M GRAT NG NTO THE L V NG
SPACE.
• F A R-MOV NG EQU PMENT OR
DUCTWORK S LOCATED N
SPACES CONTA N NG FUEL
BURN NG APPL ANCES SUCH
AS WATER HEATERS OR
BO LERS - ALL JO NTS, SEAMS,
AND OPEN NGS N THE EQU P -
MENT AND DUCT MUST ALSO
BE SEALED TO PREVENT
DEPRESSUR ZAT ON OF THE
SPACE AND POSS BLE
M GRAT ON OF COMBUST ON
BYPRODUCTS NCLUD NG
CARBON MONOX DE NTO THE
L V NG SPACE.
N COMPL ANCE W TH
RECOGN ZED CODES, T S
RECOMMENDED THAT AN
AUX L ARY DRA N PAN BE
NSTALLED UNDER ALL
EVAPORATOR CO LS AND UN TS
CONTA N NG EVAPORATOR
CO LS AND A R HANDLERS USED
W TH EVAPORATOR CO LS THAT
ARE LOCATED N ANY AREA OF A
STRUCTURE WHERE DAMAGE TO
THE BU LD NG OR BU LD NG
CONTENTS MAY OCCUR AS A
RESULT OF AN OVERFLOW OF
THE CO L DRA N PAN, A
STOPPAGE N THE PR MARY
CONDENSATE DRA N P P NG OR
ANY WATER LEAK POTENT AL
FROM THE A R HANDLER.
!WARN NG
NOT CE
APPL CAT ON OF TH S HYDRON C
A R HANDLER SHOULD BE
NDOORS. SPEC AL ATTENT ON
SHOULD BE G VEN TO UN T
S Z NG AND P P NG, F LL NG, AND
PURG NG.
NOT CE
FA LURE TO FOLLOW TH S
CAUT ON MAY RESULT N
PERSONAL NJURY. SHEET
METAL PARTS MAY HAVE
SHARP EDGES OR BURRS. USE
CARE AND WEAR APPROPR ATE
PROTECT VE CLOTH NG.
CAUT ON
NOT CE
SAFETY INFORMATION
WHEN AN A R HANDLER S
NSTALLED SO THAT SUPPLY
DUCTS CARRY A R C RCULATED
BY THE A R HANDLER TO AREAS
OUTS DE THE SPACE
CONTA N NG THE A R HANDLER,
THE RETURN A R SHALL ALSO
BE HANDLED BY DUCT(S)
SEALED TO THE A R HANDLER
CAS NG AND TERM NAT NG
OUTS DE THE SPACE
CONTA N NG THE A R HANDLER.
NSTALLAT ON MUST COMPLY
W TH ALL NSTALLAT ON
NSTRUCT ONS NCLUD NG:
• A R HANDLER OPERAT NG
UNDER THERMOSTAT C
CONTROL;
• RETURN A R DUCT SEALED TO
THE A R HANDLER;
• A R F LTERS N PLACE;
• RETURN A R TEMPERATURE
MA NTA NED BETWEEN 55°F
(13°C) AND 80°F (27°C); AND
• CLEAN A R HANDLER, DUCT
WORK AND COMPONENTS
UPON SUBSTANT AL
COMPLET ON OF THE
CONSTRUCT ON PROCESS,
AND VER FY A R HANDLER
OPERAT NG COND T ONS
NCLUD NG FLOW RATE AND
TEMPERATURE R SE,
ACCORD NG TO THE
NSTRUCT ONS.
!WARN NG
!WARN NG
HOR ZONTAL UN TS MUST BE
CONF GURED FOR R GHT HAND
A R SUPPLY OR LEFT HAND A R
SUPPLY. HOR ZONTAL DRA N
PAN MUST BE LOCATED UNDER
NDOOR CO L. FA LURE TO USE
THE DRA N PAN CAN RESULT N
PROPERTY DAMAGE.
!CAUT ON
WHEN USED N COOL NG
APPL CAT ONS, EXCESS VE
SWEAT NG MAY OCCUR WHEN
UN T S NSTALLED N AN
UNCOND T ONED SPACE. TH S
CAN RESULT N PROPERTY
DAMAGE.
!CAUT ON
CODES AND STANDARDS:
T S THE RESPONS B L TY OF
THE NSTALLER TO FOLLOW ALL
NAT ONAL CODES, STANDARDS
AND LOCAL ORD NANCES, N
ADD T ON TO NSTRUCT ONS
LA D OUT N TH S MANUAL. THE
NSTALLAT ON MUST COMPLY
W TH REGULAT ONS OF THE
LOCAL BU LD NG, HEAT NG,
PLUMB NG, AND OTHER CODES.
WHERE LOCAL CODES ARE NOT
APPL CABLE, THE NSTALLAT ON
MUST COMPLY W TH THE
NAT ONAL CODES AND ANY AND
ALL AUTHOR T ES HAV NG
JUR SD CT ON.
!NOT CE
!WARN NG
DO NOT OPERATE THE SYSTEM
W THOUT F LTERS. A PORT ON
OF THE DUST ENTRA NED N THE
A R MAY TEMPORAR LY LODGE
N THE DUCT RUNS AND AT THE
SUPPLY REG STERS. TH S
RES DUE COULD SO L CE L NGS,
WALLS, DRAPES, CARPETS AND
OTHER ART CLES N THE HOUSE.
SOOT DAMAGE MAY OCCUR
W TH F LTERS N PLACE, WHEN
CERTA N TYPES OF CANDLES,
O L LAMPS OR STAND NG P LOTS
ARE BURNED.

3
MPORTANT: TO ENSURE PROPER INSTALLATION AND OPERATION O
THIS PRODUCT, COMPLETELY READ ALL INSTRUCTIONS PRIOR TO
ATTEMPTING TO ASSEMBLE, INSTALL, OPERATE, MAINTAIN OR REPAIR
THIS PRODUCT. UPON UNPACKING O THE AIR HANDLER, INSPECT ALL
PARTS OR DAMAGE PRIOR TO INSTALLATION AND START-UP.
PROH B TED APPL CAT ONS
RHWB HYDRONIC AIR HANDLERS ARE EQUIPPED STANDARD WITH
STAINLESS STEEL PUMPS AND COMPLY WITH CALI ORNIA PER AB1953
AND VERMONT PER SB152 OR USE IN AIR HANDLER AND IN AN OPEN
SYSTEM WITH POTABLE WATER.
CONTENTS
Safety Precautions...................................................................................................1
Safety Information....................................................................................................2
General Information..................................................................................................4
Location Requirements and Considerations............................................................6
Selection Procedure.................................................................................................8
Ducting ...................................................................................................................12
Installation ..............................................................................................................14
Plumbing.................................................................................................................15
Electrical Wiring......................................................................................................18
Accessories............................................................................................................18
Sequence of Operation ..........................................................................................22
Maintenance...........................................................................................................24
Troubleshooting......................................................................................................26
Wiring Diagrams................................................................................................27-28
MPORTANT: All manufacturer
products meet current ederal 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 ( iberglass) Insulation
• Carbon Monoxide (CO)
• ormaldehyde
• Benzene
More details are available at the
Websites for OSHA (Occupational
Safety and Health Administration), at
www.osha.gov and the State of
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.
!WARN NG

GENERAL INFORMATION
F GURE 1
UPFLOW A R HANDLER
THE RWHB SER ES HYDRON C A R HANDLERS ARE DES GN-CERT F ED BY UL
98
7
3
2
1
5
4
10
6
11
ITEM ITEM
NO. PART NAME NO. PART NAME
1 DOOR SWITCH 7 PUMP
2 JUNCTION BOX 8 WATER INLET
3 TRANSFORMER 9 WATER OUTLET
4 CAPACITOR 10 BLOWER MOTOR
5 LOW VOLTAGE (THERMOSTAT) TERMINAL 11 HYDRONIC COIL ASSEMBLY
6 BLOWER
4

Association, Inc., Batterymarch
Park, Quincy, MA 02269.” These
publications are:
• ANSI/N PA No. 70-(Latest Edition)
National Electrical Code.
• N PA90A Installation of Air
Conditioning and Ventilating
Systems.
• N PA90B Installation of Warm Air
Heating and Air Conditioning
Systems.
• The equipment has been
evaluated in accordance with the
Code of ederal Regulations,
Chapter XX, Part 3280.
IMPORTANT
INFORMATION ABOUT
EFFICIENCY AND INDOOR
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, 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.
DUCT LEAKS CAN CREATE AN
UNBALANCED SYSTEM AND
DRAW POLLUTANTS SUCH AS
D RT, DUST, FUMES AND ODORS
NTO THE HOME CAUS NG
PROPERTY DAMAGE. FUMES
AND ODORS FROM TOX C,
VOLAT LE OR FLAMMABLE
CHEM CALS, AS WELL AS
AUTOMOB LE EXHAUST AND
CARBON MONOX DE (CO), CAN
BE DRAWN NTO THE L V NG
SPACE THROUGH LEAK NG
DUCTS AND UNBALANCED DUCT
SYSTEMS CAUS NG PERSONAL
NJURY OR DEATH (SEE F GURE
2).
• F A R-MOV NG EQU PMENT OR
DUCTWORK S LOCATED N
GARAGES OR OFF-GARAGE
STORAGE AREAS - ALL JO NTS,
SEAMS, AND OPEN NGS N THE
EQU PMENT AND DUCT MUST
BE SEALED TO L M T THE
M GRAT ON OF TOX C FUMES
AND ODORS NCLUD NG
CARBON MONOX DE FROM
M GRAT NG NTO THE L V NG
SPACE.
• F A R-MOV NG EQU PMENT OR
DUCTWORK S LOCATED N
SPACES CONTA N NG FUEL
BURN NG APPL ANCES SUCH
AS WATER HEATERS OR
BO LERS - ALL JO NTS, SEAMS,
AND OPEN NGS N THE
EQU PMENT AND DUCT MUST
ALSO BE SEALED TO PREVENT
DEPRESSUR ZAT ON OF THE
SPACE AND POSS BLE
M GRAT ON OF COMBUST ON
BYPRODUCTS NCLUD NG
CARBON MONOX DE NTO THE
L V NG SPACE.
MPROPER NSTALLAT ON, OR
NSTALLAT ON NOT MADE N
ACCORDANCE W TH THE UL
CERT F CAT ON OR THESE
NSTRUCT ONS, CAN RESULT N
UNSAT SFACTORY OPERAT ON
AND/OR DANGEROUS COND -
T ONS AND ARE NOT COVERED BY
THE UN T WARRANTY.
N COMPL ANCE W TH
RECOGN ZED CODES, T S
RECOMMENDED THAT AN
AUX L ARY DRA N PAN BE
NSTALLED UNDER ALL
EVAPORATOR CO LS OR UN TS
CONTA N NG EVAPORATOR CO LS
OR A R HANDLERS USED W TH
EVAPORATOR CO LS THAT ARE
LOCATED N ANY AREA OF A
STRUCTURE DAMAGE TO THE
BU LD NG OR BU LD NG CONTENTS
MAY OCCUR AS A RESULT OF AN
OVERFLOW OF THE CO L DRA N
PAN OR A STOPPAGE N THE
PR MARY CONDENSATE DRA N
P P NG.
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 prevent 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/pump 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 ire Protection
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, voltage, phase, etc. to be
sure equipment matches what is
NOT CE
NOT CE
!WARN NG
F GURE 2
M GRAT ON OF DANGEROUS SUBSTANCES, FUMES, AND ODORS NTO L V NG SPACES
5

6
GENERAL INFORMATION
1. MPORTANT: If installing the unit
over a finished ceiling or living
area, be certain to install an
auxiliary condensate drain pan
under the entire unit. This
auxiliary drain pan should extend
under any evaporator coil
installed with the air handler and
the open portion of the
condensate drain assembly.
2. MPORTANT: If using a cooling
evaporator coil with this air
handler:
Be sure the air passes over the
coil/pump before passing over
the cooling coil.
MPORTANT: Support this unit
when installed. Since this air
handler is suitable for attic or
crawl space installations, it may
be installed on combustible wood
flooring or by using support
brackets. See Figure 5.
5. MPORTANT: f installing in a
utility room, be sure the door
is wide enough to:
a. allow the largest part of the air
handler to pass; or
b. allow any other appliance
(such as a water heater)
to pass.
6. MPORTANT: This air handler is
not approved or recommended
for installation on its back, with
access doors facing upwards
(see igure 3).
CLEARANCE -
ACCESSIBILITY
The design of air handlers with input
ratings as listed in the tables under
igure 4 are certified by UL for the
clearances to combustible materials
shown in inches.
See name/rating plate and clearance
label for specific model number and
clearance information.
Service clearance of at least 24” is
recommended in front of
all air handlers.
NOTE: Use recommended 24”
clearance if accessibility clearances
are greater than fire protection
clearances.
Air handlers are shipped with a
bottom closure panel installed.
When bottom return air is used,
remove the panel by removing the
two screws attaching the panel to
the front base angle.
SITE SELECTION
1. Select a site in the building near
the center of the proposed, or
existing, duct system.
2. Locate the air handler to maintain
proper clearance to combustibles
as shown in the following tables.
LOCATION REQUIREMENTS AND CONSIDERATIONS
PROH B TED NSTALLAT ONS
The air inlet is not allowed to be at
the front or back of the air handler.
Do not position the air handler on its back
or with it face down. Do not cut sides of
horizontal application.
NOTE:
Multiple air handlers configured for installation with
a single Tankless Water Heater is prohibited.
Front
Back
F GURE 3

F GURE 4
CLEARANCE TO COMBUST BLES, UPFLOW, HOR ZONTAL LEFT OR R GHT,
NO DOWNFLOW
I392
SUPPLY
A R
WATER
NLET
WATER OUTLET
RETURN
A R
A RFLOW
273⁄8
267⁄16
MPORTANT: Support this unit when installed. Since this air
handler is suitable for attic or crawl space installation, it may be
installed on combustible wood flooring or by using support
brackets.
MINIMUM CLEARANCE (IN.)
LEFT RIGHT
MODEL A B C D E F SIDE SIDE BACK TOP FRONT
04 171⁄21611⁄32 155⁄83⁄4ID 15 1325⁄32 0 0 0 1 0* 06 171⁄21611⁄32 155⁄83⁄4ID 15 1325⁄32 0 0 0 1 0* 08 241⁄22311⁄32 225⁄83⁄4ID 22 2025⁄32 0 0 0 1 0* 10 241⁄22311⁄32 225⁄83⁄4ID 22 2025⁄32 0 0 0 1 0*
*A service clearance of at least 24 inches is recommended in front of all air handlers.
7

04W 40,000 [11.7 kW]
R = Rheem H = Air handler W = Water B = 2nd Series 06W 60,000 [17.6 kW]
08W 80,000 [23.5 kW]
10W 90,000 [28.3 kW]
8
SELECTION PROCEDURE
(WITH EXAMPLE)
. Define hot water load for the total
required domestic hot water
usage.
As an example, let’s assume that the
selected Tankless Water Heater for your
whole house solution is the RTG-74 and
your calculated heat gain and heat loss
values are as stated in section II.
. Determine cooling and heating
requirements at design conditions:
The ACCA’s Manual J Residential Load
Calculation method is the established
trade standard, approved by ANSI, for
the correct siziing and selection of
Heating, Ventilation, Air-Conditioning
and Refrigeration (HVACR) equipment in
residential homes. The most recent
revision is the eight edition, an all-
inclusive new approach to ensuring that
Indoor Air Quality (IAQ) systems are as
efficient, safe, and healthy as possible.
Refer to the Air Conditioning Contractors
of America website at:
http://www.acca.org/tech/manualj/ or a
qualified HVACR contractor for further
assistance.
Assumptions:
Required Cooling Capacity . 48,000 BTU/HR
(Total Capacity)
Required Heating Capacity . 60,000 BTU/HR
Evaporator Air Quantity. . . . . . . . . 1600 C M
External Static Pressure . . . . . . . 0.2 in. W.C.
Electrical Characteristics . . . . . . . . . 115-1-60
. Determine total external static
pressure (ESP) at design
conditions:
Before using the Airflow Performance
Table calculate the total static pressure
required. rom the given example, note
the Wet Coil Pressure Drop (selected
from the field supplied Evaporative
Cased Coil Installation Instructions), and
the ilter Pressure Drop. Determine both
static pressures at 1600 C M:
Wet Coil Pressure Drop . . . .0.3 in. W.C.
( rom Coil Manufacturer’s Installation Instructions)
External Static Pressure . . . 0.2 in. W.C.
(Ductwork, etc.)
ilter Pressure Drop . . . .08 in. W.C.
(.08 inches if the included filter is used; refer to
the filter’s manufacturer’s instructions if another
filter is used.)
Total Static Pressure. . . 0.58 in. W.C.
V. Select unit based on required
cooling capacity airflow:
or an initial selection, choose a unit
size that will provide the required
airflow. Refer to Airflow Performance
Table. Note that at 0.6 ESP (external
static pressure) the RHWB-
06WMP48A unit will deliver 1560
C M when configured for HIGH
speed.
V. Select heating capacity of unit
to provide the requisite design
condition:
rom the Hydronic Air Handler/
Tankless Water Heater, note that the
unit RHWB-06WMP48A, (as selected
above) when matched with the RTG-
95 Tankless Water Heater, will
provide 59.2 MBH (59,200 BTU/HR)
at an input water temperature (to Air
Handler) of 150° .
3
2
Model Number Nomenclature
308 K A 5 M
RHWB 04W MP36 A
Rheem
Air Handler
Water
Denotes a major design change in the
roduct line (i.e. ca acity)
Nominal Heating Capacity (BTU/HR)
04W 40,000
06W 60,000
08W 80,000
10W 100,000
Revision
A = Rev 0
Blower Size
M = 11x7
R = 11x10
Variations
P = PSC Motor
X = ECO Tech
36 = 1100-1300 C M
48 = 1500-1700 C M
60 = 1900-2100 C M
Design Series
R
Brand Application Type Design
Series Inlet Water
Temp = 150 F
[66 C]
Output
BTU/HR [kW]
Heating Output Designation
Blower
Size Variations Heat/Cool Designation
36 = 1100-1300 CFM
36 = [519-613.5 L/s]
48 = 1500-1700 CFM
48 = [707.9-802.3 L/s]
60 = 1900-2100 CFM
60 = [896.7-991.1 L/s]
A - Rev 0
P = PSC
X = ECO
TECH™
M = 11x7
[279 x 178 mm]
R = 11x10
[279 x 254 mm]
Revision
HWB -06W MP 36 A
HYDRONIC AIR HANDLER MODEL IDENTIFICATION

9
HYDRONIC AIR HANDLER ELECTRICAL PHYSICAL SPECIFICATIONS - PSC MODELS
U.S. and Canadian Models
HYDRONIC AIR HANDLER ELECTRICAL PHYSICAL SPECIFICATIONS - ECO-TECH™ MODELS
U.S. and Canadian Models
MODEL NUMBERS
Nominal Heating Capacity BTU/hr [W] 40000 60000 80000 100000
Air Side Temperature Rise* F [ C] 45-75 [25-41.7] 40-70 [22.2-38.9] 35-65 [19.4-36.1] 35-65 [19.4-36.1]
Heating CFM [L/s] @ .8 WC [.19 kPa] 590 [278] 1000 [471] 1453 [685] 1818 [858]
Cooling CFM [L/s] @ .5 WC [.12 kPa] 1235 [582] 1622 [765] 1871 [883] 1973 [931]
Power Supply (V - HZ - PH) 115 - 60 - 1
Minimum Circuit Ampacity - Amps 9.6 10.9 13.6 13.6
Max Rating of Over Current Protective Device - Amps 15.8 18.2 23 23
Maximum Fuse or Circuit Breaker Size 15 15 20 20
Motor HP [W] 1/2 [373] 3/4 [559] 3/4 [559] 3/4 [559]
Blower (D x W) in [mm] 11 x 7 [279 x 178] 11 x 7 [279 x 178] 11 x 10 [279 x 254] 11 x 10 [279 x 254]
Blower Motor Type PSC
Pump Type Wet Rotor
Pump Power Supply (V - HZ - PH) 115 - 60 - 1
Pump Motor RLA/LRA - Amps 1.8
Pump HP [W] 1/8
Pump Maximum Working Pressure psi [kPa] 125 [861]
Min/Max Working Temperature F [ C] 160 [71]
Water Connection Type Copper Studs
Inlet Water Connection Diameter in [mm] 3/4 [19]
Out Water Connection Diameter in [mm] 3/4 [19]
Return Air Filter Size in [mm] 12 x 16 [305 x 406] 16 x 24 [406 x 609]
Standard High Velocity Filter Size (L x W x H) in [mm] 15 3/4 x 25 x 1 [400 x 635 x 25] 22 3/4 x 25 x 1 [578 x 635 x 25]
Shipping Weight LBS [kg] 107 [48.5] 118 [53.5] 137 [62.1] 145 [65.7]
RHWB-04WMP36A RHWB-06WMP48A RHWB-08WRP60A RHWB-10WRP60A
MODEL NUMBERS
Nominal Heating Capacity BTU/hr [W] 40000 60000 80000 100000
Air Side Temperature Rise* F [ C] 45-75 [25-41.7] 40-70 [22.2-38.9] 35-65 [19.4-36.1] 35-65 [19.4-36.1]
Heating CFM [L/s] @ .8 WC [.19 kPa] 578 [272] 1030 [485] 1502 [707] 1847 [870]
Cooling CFM [L/s] @ .5 WC [.12 kPa] 1180 [556] 1300 [612] 1645 [775] 1707 [804]
Power Supply (V - HZ - PH) 115 - 60 - 1
Minimum Circuit Ampacity - Amps 9.6 12.4 12.4 12.4
Max Rating of Over Current Protective Device - Amps 15.8 20.9 20.9 20.9
Maximum Fuse or Circuit Breaker Size 15 20 20 20
Motor HP [W] 1/2 [373] 3/4 [559] 3/4 [559] 3/4 [559]
Blower (D x W) in [mm] 11 x 7 [279 x 178] 11 x 7 [279 x 178] 11 x 10 [279 x 254] 11 x 10 [279 x 254]
Blower Motor Type EcoTech / ECM Type
Pump Type Wet Rotor
Pump Power Supply (V - HZ - PH) 115 - 60 - 1
Pump Motor RLA/LRA - Amps 1.8
Pump HP [W] 1/8
Pump Maximum Working Pressure psi [kPa] 125 [861]
Min/Max Working Temperature F [ C] 160 [71]
Water Connection Type Copper Studs
Inlet Water Connection Diameter in [mm] 3/4 [19]
Out Water Connection Diameter in [mm] 3/4 [19]
Return Air Filter Size in [mm] 12 x 16 [305 x 406] 16 x 24 [406 x 609]
Standard High Velocity Filter Size (L x W x H) in [mm] 15 3/4 x 25 x 1 [400 x 635 x 25] 22 3/4 x 25 x 1 [578 x 635 x 25]
Shipping Weight LBS [kg] 116 [52.6] 126 [57.2] 146 [66.2] 153 [69.3]
RHWB-04WMX36A RHWB-06WMXP48A RHWB-08WRX60A RHWB-10WRX60A

10
SAMPLE HYDRONIC AIR HANDLER PERFORMANCE
WATER INLET
TEMP (°F) [°C]
WATER OUTLET
TEMP (°F) [°C]
WATER FLOW AIR INLET
TEMP (°F) [°C]
AIR OUTLET
TEMP (°F) [°C]
CAPACITY
(BTU/HR) [kW]
AIR TEMP
RISE (°F) [°C]
120 [49] 110 [43] 106 [41] 20900 [6.13] 30 [17]
130 [54] 117 [47] 113 [45] 25800 [7.56] 37 [21]
140 [60] 125 [52] 122 [50] 29800 [8.73] 43 [24]
150* [66] 132 [56] 130 [54] 35000 [10.26] 50 [28]
160 [71] 140 [60] 137 [58] 40000 [11.72] 57 [32]
120 [49] 100 [38] 105 [41] 38200 [11.20] 31 [17]
130 [54] 108 [42] 109 [43] 44900 [13.16] 37 [21]
140 [60] 115 [46] 116 [47] 50600 [14.83] 42 [23]
150 [66] 120 [49] 126 [52] 60000 [17.58] 49 [27]
160 [71] 126 [52] 129 [54] 67100 [19.67] 55 [31]
120 [49] 106 [36] 103 [39] 45500 [13.33] 26 [14]
130 [54] 113 [39] 108 [42] 53700 [15.74] 31 [17]
140 [60] 121 [43] 113 [45] 62500 [18.32] 36 [20]
150 [66] 128 [46] 120 [49] 71800 [21.04] 42 [23]
160 [71] 135 [49] 123 [51] 80500 [23.59] 47 [26]
120 [49] 96 [36] 100 [38] 47200 [13.83] 27 [15]
130 [54] 101 [38] 110 [43] 57800 [16.94] 33 [18]
140 [60] 106 [41] 112 [44] 66900 [19.61] 38 [21]
150 [66] 111 [44] 119 [48] 77000 [22.57] 44 [24]
160 [71] 106 [46] 124 [51] 86800 [25.44] 50 [28]
AIR CFM
[L/s]
LB/HR
GPM
CFM - Cubic Feet Per Minute
Performance is based on the following assumptions:
1) an estimated 100 ft. [30m] equivalent length of 0.75-inch piping
2) 0.50” [13] w.c. of external air static.
SAMPLE HYDRONIC AIR HANDLER PERFORMANCE
646 [305]
1000 [462]
1450 [684]
1800 [850]
68 [20]
68 [20]
68 [20]
68 [20]
[kg/hr]
2000/
[907]
2000/
[907]
2000/
[907]
2000/
[907]
4
4
4
4
RHWB-04WMP36A
RHWB-04WMX36A
RHWB-06WMP48A
RHWB-06WMX48A
RHWB-08WRP60A
RHWB-08WRX60A
RHWB-10WRP60A
RHWB-10WRX60A