Rudd RXBM Installation Manual
USER’S INFORMATION MANUAL
FOR COMMUNICATING MODULATING CONDENSING
GAS FURNACES
Recognize this symbol as an indication of Important Safety Information!
!
WARNING
!
IF THE INFORMATION IN THESE INSTRUCTIONS
IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT, CAUSING PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.
FOR YOUR SAFETY
!
— Do not store or use gasoline or other flammable
vapors and liquids, or other combustible materials
in the vicinity of this or any other appliance.
— WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use
any phone in your building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the
fire department.
• Do not rely on smell alone to detect leaks. Due
to various factors, you may not be able to smell
fuel gases.
• U.L. recognized fuel gas and CO detectors are
recommended in all applications, and their
installation should be in accordance with the
manufacturer’s recommendations and/or local
laws, rules, regulations, or customs.
— Installation and service must be performed by
a qualified installer, service agency or the gas
supplier.
NOTE TO INSTALLER: REVIEW THIS
MANUAL WITH THE USER AND LEAVE
IT WITH THE EQUIPMENT.
DO NOT DESTROY. PLEASE READ
CAREFULLY AND KEEP IN A SAFE
PLACE FOR FUTURE REFERENCE.
WARNING
!
PROPOSITION 65: THIS PRODUCT CONTAINS
CHEMICALS KNOWN TO THE STATE OF CALIFORNIA TO CAUSE CANCER, BIRTH DEFECTS
OR OTHER REPRODUCTIVE HARM.
92-20802-98-00
GENERAL 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.
!
NOTICE
IMPROPER INSTALLATION, OR
INSTALLATION NOT MADE IN
ACCORDANCE WITH THE CSA
INTERNATIONAL (CSA) CERTIFICATION OR THESE INSTRUCTIONS,
CAN RESULT IN UNSATISFACTORY
OPERATION AND/OR DANGEROUS
CONDI-TIONS 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).
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.
FIGURE 1
MIGRATION OF DANGEROUS SUBSTANCES, FUMES, AND ODORS INTO LIVING SPACES
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
•
pace, apply caulking around the
s
ower wires, control wires, refriger-
p
nt tubing and condensate line
a
here they enter the cabinet. Seal
w
he power wires on the inside where
t
hey exit conduit opening. Caulking
t
s required to prevent air leakage
i
nto and condensate from forming
i
nside the unit, control box, and on
i
lectrical controls.
e
• 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.,
Batterymarch 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
INTRODUCTION TO YOUR FURNACE
Thank you for the purchase of your new modulating gas furnace! This furnace is designed to be the ultimate in heating
comfort and is the only true modulating gas furnace available
on the market today.
The modulating gas furnace provides a superior level of
comfort due to the interaction of seven basic components:
Variable Output Thermostat - Whereas conventional ther-
•
mostats only send an On/Off signal to the furnace, the thermostat for the modulating furnace system is specially
designed to indicate the exact heating requirements of the
conditioned space. This is accomplished by a logic control
routine that accurately senses the space load, minimizes
recovery times, reduces temperature swings and optimizes
system efficiency and performance.
• Fully Communicatiing Thermostat Modulating Gas Valve -
The gas valve has the conventional redundant solenoid
valves for inherent safety, but also has a third operator for
capacity control. This operator is actually a servo valve
which varies the input rate of the furnace proportionally to
the signal from the controller. The modulating furnace can
operate anywhere from 40% to 100% of the nameplate input
of the furnace.
Furnace Controller - The furnace controller provides all of
•
the ignition and safety functions of the typical IFC as well as
nterpreting the signals from the thermostat. The furnace
i
controller will optimize furnace performance by monitoring all
thermostat and temperature inputs and insuring the stable
operation of the inducer, gas valve and indoor blower motor.
• ECM Variable Speed Blower - The airflow through the duct
ork is varied to meet the load demand. Airflow as low as
w
300 CFM is achieved by the response of a brushless permanent magnet variable speed blower motor.
• Two Speed Draft Inducer - To insure clean combustion
and peak efficiency, the induced draft motor speed is adjust-
d based on the gas valve setting to provide the proper
e
amount of combustion air to the burners.
FIGURE 2
UPFLOW FURNACE
ITEM
NO. PART NAME
1 CONDENSATE TRAP
2 DOOR SWITCH
3 JUNCTION BOX
4 TRANSFORMER
5 PRESSURE SWITCH ASSEMBLY
6 EXHAUST TRANSITION
7 CONNECTOR
8 MAIN LIMIT
9 EXHAUST AIR PIPE
10 VENT CAP SHIPPING PLUG
11 FLAME SENSOR
12 OVERTEMPERATURE SWITCH
ST-A1123-01_01
ITEM
NO. PART NAME
13 TOP PLATE
14 BURNER
15 IGNITER
16 COMBUSTION AIR INLET
17 GAS VALVE
18 INDUCED DRAFT BLOWER
19 POWER FACTOR CHOKE
20 INTEGRATEDFURNACE CONTROL
21 BLOWER MOTOR
22 BLOWER HOUSING
FIGURE 3
DOWNFLOW FURNACE
ITEM
NO. PART NAME
1 GAS VALVE
2 PRESSURE SWITCH ASSEMBLY
3 BLOWER HOUSING
4 POWER FACTOR CHOKE
5 BLOWER MOTOR
6 DOOR SWITCH
7 JUNCTION BOX
8 COMBUSTION AIR INLET
9 HALC
10 TOP PLATE
11 VENT CAP SHIPPING PLUG
12 OUTLET AIR PIPE
ST-A1123-01_02
ITEM
NO. PART NAME
13 INTEGRATEDFURNACE CONTROL
14 TRANSFORMER
15 INDUCED DRAFT BLOWER
16 CONNECTOR
17 EXHAUST TRANSITION
18 CONDENSATE TRAP
19 IGNITER
20 OVERTEMPERATURE SWITCH
21 BURNER
22 FLAME SENSOR
3
➤ FIGURE 3
ORIZONTAL FURNACE (-)GJD
H
ITEM
NO. PART NAME
1 GAS VALVE
2 CAPACITOR (FOR INDUCER)
3 LOW PRESSURE SWITCH
4 HIGH PRESSURE SWITCH
5 BLOWER HOUSING
6 POWER FACTOR CHOKE
7 BLOWER MOTOR
8 DOOR SWITCH
9 JUNCTION BOX
10 COMBUSTION AIR INLET
11 HALC
12 TOP PLATE
13 VENT CAP PLUG
ITEM
NO. PART NAME
14 OUTLET AIR PIPE
15 INTEGRATED FURNACE CONTROL
16 TRANSFORMER
17 INDUCED DRAFT BLOWER
18 CONNECTOR
19 EXHAUST TRANSITION
20 CONDENSATE TRAP
21 IGNITER
22 OVERTEMPERATURE SWITCH
23 BURNER
24 FLAME SENSOR
25 FACTORY-INSTALLED STREET ELBOW
ST-A107801.S01
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