Rheem RGLT-07EBRQR, RGLT-07NBRQR, RGLT-10EBRMR, RGLT-10NBRMR, RGLT-12EARMR Installation Instructions Manual

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INSTALLATION INSTRUCTIONS

FOR UPFLOW/HORIZONTAL & DOWNFLOW INDUCED DRAFT GAS FURNACES WITH ECM X-13 MOTORS

(-)GPT UPFLOW/HORIZONTAL SERIES (-)GLT DOWNFLOW SERIES

SUPERSEDES 92-24161-96-00

92-24161-96-01

Before beginning any troubleshooting procedure, complete the following installation checklist. A furnace malfunction is sometimes caused by an improper installation. By completing this checklist, the problem may be found and corrected. Make copies of the checklist and complete one for every Low Profile Furnace service call for your records.

INSTALLATION CHECKLIST

(Refer to this manual for specifics.)

AS SUPPLY

Adequate pipe size

No gas leaks

Proper supply and manifold gas pressure (check with an accurate U-tube manometer with the furnace and all other gas appliances operating.)

LECTRICAL

Correct thermostat and subbase Thermostat model Subbase model

Correct thermostat mode and setting

Correct line supply voltage

Correct power supply polarity is required with electronic ignition

Correct furnace ground to electrical panel

DC microamp (∝A) flame signal (hot surface ignition units)

Correct control voltage

Measure and set heat anticipator amperage

Air conditioning low voltage wires connected to terminals “Y” “C” - not with wire nuts

VENTING

Correct vent pipe diameter and length (according to CSA tables) Vent connection size

Correct venting material (according to CSA tables)

Correct lining for masonry chimneys

Adequate clearance from combustibles

Proper negative pressure reading in the vent

Vent pipe secured to induced draft blower housing

COMBUSTION AIR

Proper source of combustion air

Correct combustion air opening size

Optional attic combustion air pull

Non-attic combustion air pull

FURNACE INSTALLATION

Adequate clearance from combustibles

Adequate clearance for service

Proper air temperature rise (See furnace rating plate)

External static pressure inches w.c.

Correct filter(s)

Correct cooling coil or accessories (if equipped)

Adequate supply and return air ducting Return Air Duct Size Supply Air Duct Size

Air ducts sealed to prevent leakage

Important: 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

arnings for products sold in California

w that contain, or produce, any of over 600 listed chemicals known to the State

f California to cause cancer or birth

o defects such as fiberglass insulation, lead in brass, and combustion products

rom 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

CONTENTS

nstallation Check List ..............................................................................................2

afety Information ....................................................................................................4

eneral Information..................................................................................................6

ocation Requirements and Considerations............................................................7

ombustion and Ventilation Air..............................................................................12

ent Pipe Installation..............................................................................................16

as Supply and Piping...........................................................................................19

lectrical Wiring......................................................................................................23

hermostat .............................................................................................................23

Accessories............................................................................................................24

Furnace Twinning...................................................................................................24

High Altitude Installations .......................................................................................27

Start-Up Procedures...............................................................................................30

Air Flow...................................................................................................................32

Blower Performance Data......................................................................................33

Safety Features ......................................................................................................34

Maintenance...........................................................................................................35

Troubleshooting......................................................................................................38

Wiring Diagram.......................................................................................................39

IMPORTANT: TO INSURE PROPER INSTALLATION AND OPERATION OF THIS PRODUCT, COMPLETELY READ ALL INSTRUCTIONS PRIOR TO ATTEMPTING TO ASSEMBLE, INSTALL, OPERATE, MAINTAIN OR REPAIR THIS PRODUCT. UPON UNPACKING OF THE FURNACE, INSPECT ALL PARTS FOR DAMAGE PRIOR TO INSTALLATION AND START-UP.

SAFETY INFORMATION

WARNING

USE ONLY WITH TYPE OF GAS APPROVED FOR THIS FURNACE. REFER TO THE FURNACE RATING PLATE.

WARNING

INSTALL THIS FURNACE ONLY IN

LOCATION AND POSITION AS

A SPECIFIED IN THE LOCATION REQUIREMENTS AND CONSIDERATIONS SECTION OF THESE INSTRUCTIONS.

WARNING

PROVIDE ADEQUATE COMBUSTION AND VENTILATION AIR TO THE FURNACE SPACE AS SPECIFIED IN THE VENTING SECTION OF THESE INSTRUCTIONS.

WARNING

COMBUSTION PRODUCTS MUST BE DISCHARGED OUTDOORS. CONNECT THIS FURNACE TO AN APPROVED VENT SYSTEM ONLY, AS SPECIFIED IN VENT PIPE INSTALLATION SECTION OF THESE INSTRUCTIONS.

WARNING

THE MANUFACTURER IS NOT RESPONSIBLE FOR EQUIPMENT THAT IS MISMATCHED OR IMPROPERLY INSTALLED. NEVER TEST FOR GAS LEAKS WITH AN OPEN FLAME. USE A COMMERCIALLY AVAILABLE SOAP SOLUTION MADE SPECIFICALLY FOR THE DETECTION OF LEAKS TO CHECK ALL CONNECTIONS, AS SPECIFIED IN GAS SUPPLY AND PIPING SECTION OF THESE INSTRUCTIONS.

WARNING

LWAYS INSTALL FURNACE TO

A OPERATE WITHIN THE FURNACE'S INTENDED TEMPERATURE-RISE RANGE WITH A DUCT SYSTEM WHICH HAS AN EXTERNAL STATIC PRESSURE WITHIN THE ALLOWABLE RANGE, AS SPECIFIED IN DUCTING SECTION

F THESE INSTRUCTIONS. SEE

O ALSO FURNACE RATING PLATE. WHEN A FURNACE IS INSTALLED

WARNING

SO THAT SUPPLY DUCTS CARRY AIR CIRCULATED BY THE FURNACE TO AREAS OUTSIDE THE SPACE CONTAINING THE FURNACE, THE RETURN AIR SHALL ALSO BE HANDLED BY DUCT(S) SEALED TO THE FURNACE CASING AND TERMINATING OUTSIDE THE SPACE CONTAINING THE FURNACE. WHEN THIS FURNACE IS

WARNING

INSTALLED IN A RESIDENTIAL GARAGE, IT MUST BE INSTALLED SO THE BURNERS AND IGNITION SOURCE ARE LOCATED NO LESS THAN 18 INCHES ABOVE THE FLOOR. THIS IS TO REDUCE THE RISK OF IGNITING FLAMMABLE VAPORS WHICH MAY BE PRESENT IN A GARAGE. ALSO, THE FURNACE MUST BE LOCATED OR PROTECTED TO AVOID PHYSICAL DAMAGE BY VEHICLES. FAILURE TO FOLLOW THESE WARNINGS CAN CAUSE A FIRE OR EXPLOSION, RESULTING IN PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

WARNING

USE OF THIS FURNACE IS

LLOWED DURING

A CONSTRUCTION IF THE FOLLOWING TEMPORARY INSTALLATION REQUIREMENTS ARE MET. INSTALLATION MUST COMPLY WITH ALL INSTALLATION INSTRUCTIONS INCLUDING:

• PROPER VENT INSTALLATION;

• FURNACE OPERATING UNDER HERMOSTATIC CONTROL;

• RETURN AIR DUCT SEALED TO

THE FURNACE;

• AIR FILTERS IN PLACE;

• SET FURNACE INPUT RATE

AND TEMPERATURE RISE PER RATING PLATE MARKING;

• MEANS FOR PROVIDING

OUTDOOR AIR REQUIRED FOR COMBUSTION;

• RETURN AIR TEMPERATURE

MAINTAINED BETWEEN 55°F (13°C) AND 80°F (27°C); AND

• CLEAN FURNACE, DUCT WORK

AND COMPONENTS UPON SUBSTANTIAL COMPLETION OF THE CONSTRUCTION PROCESS, AND VERIFY FURNACE OPERATING CONDITIONS INCLUDING IGNITION, INPUT RATE, TEMPERATURE RISE AND VENTING, ACCORDING TO THE INSTRUCTIONS.

WARNING

DUCT LEAKS CAN CREATE AN UNBALANCED SYSTEM AND DRAW POLLUTANTS SUCH AS DIRT, DUST, FUMES AND ODORS INTO THE HOME CAUSING

ROPERTY DAMAGE. FUMES

P 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

YSTEMS CAUSING PERSONAL

S 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

NSATISFACTORY OPERATION

U 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).

GENERAL INFORMATION

The (-)GPT/(-)GLT series furnaces are design certified by CSA for use with natural and propane gases as follows:

As a Category I furnace, it may be vented vertically with type B-1 vent pipe and also may be common vented as described in these instructions.

This furnace should be installed in accordance with the American National Standard Z223.1 - latest edition booklet entitled “National Fuel Gas Code” (NFPA 54) (in Canada, CSA B149.1 and .2 Installation Codes for gas burning appliances), and the requirements or codes of the local utility or other authority having jurisdiction including local plumbing or waste water codes.

The National Appliance Energy Conservation Act (NAECA) of 1987 states that any gas furnace manufactured after January 1, 1992, must have a minimum Annual Fuel Utilization Efficiency (AFUE) of 78%. The higher the AFUE percentage the more usable heat energy the consumer gets for every dollar of fuel purchased. This is similar to the EPA's minimum gas mileage requirement for automobiles. It gives the consumer a relatively easy way to make direct efficiency comparisons between different furnace brands and styles.

A high AFUE value, which translates into a low operating cost, is not the only concern that consumers have. They also want a furnace with a reasonable installed cost. They want a furnace that provides them with comfort – their main concern. And they expect a furnace with exceptional reliability and longevity.

Gas furnace manufacturers are always striving to provide consumers with the best furnace value. The Low Profile Furnace addresses all those consumer needs. It gives exceptional efficiency with a low installation cost. It delivers the comfort the customer wants along with the reliability they expect.

The key to all these customer benefits is the furnace's heat exchanger. The materials used to construct the furnace in general and the heat exchanger in particular make it a rugged, long lasting unit. The unique heat exchanger design provides the customer with a furnace only 34 inches high. This gives the consumer a unit easily installed in almost every location that accepts all customary accessories.

With the introduction of higher efficiency furnaces, special attention must be paid to the venting system. Only listed venting systems may be used as stated in the installation instructions and the

National Fuel Gas Code, ANSI Z223.1 (NFPA 54), or the Canadian CAN/CGA B149.1 and B149.2 Installation Codes for Gas Burning Appliances. Since

furnace technology and venting requirements are changing, awareness

of local, state, and federal codes and industry changes is imperative.

NOTE: Always perform a proper heat loss calculation before specifying the furnace size. This ensures that the furnace is sized to adequately, economically, heat the building and provide the correct airflow for your application.

IMPORTANT: PROPER APPLICATION, INSTALLATION AND MAINTENANCE OF THIS FURNACE IS A MUST IF CONSUMERS ARE TO RECEIVE THE FULL BENEFITS FOR WHICH THEY HAVE PAID.

Additional helpful publications available from the “National Fire Protection Association” are: NFPA-90A – Installation of Air Conditioning and Ventilating Systems 1985 or latest edition. NFPA-90B – Warm Air Heating and Air Conditioning Systems 1984.

These publications are available from:

National Fire Protection Association,

Inc. Batterymarch Park Quincy, MA 02269

CSA-INTERNATIONAL 178 Rexdale Blvd. Etobicoke (Toronto), Ontario Canada M9W, 1R3

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.

FIGURE 1

MIGRATION OF DANGEROUS SUBSTANCES, FUMES, AND ODORS INTO LIVING SPACES

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.

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 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 CONDITIONS AND ARE NOT COVERED BY THE UNIT WARRANTY.

NOTICE

STOPPAGE IN THE PRIMARY CONDENSATE DRAIN PIPING. SEE ACCESSORIES SECTION OF THESE INSTRUCTIONS FOR AUXILIARY HORIZONTAL OVERFLOW PAN INFORMATION (MODEL RXBM).

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

• ite, remove carton taking care not

o 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 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/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

•

ny local code which may apply and

he national codes. Latest editions

re available from: “National Fire

rotection Association, Inc.,

P 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.

LOCATION REQUIREMENTS AND CONSIDERATIONS

GENERAL INFORMATION

1. NOTE: This furnace is shipped with heat exchanger support brackets installed under the back of the heat exchanger. These may be removed before installation, but it is not required.

LOCATION

WARNING

THIS FURNACE IS NOT APPROVED FOR INSTALLATION IN A MOBILE HOME. DO NOT INSTALL THIS FURNACE IN A MOBILE HOME. INSTALLATION IN A MOBILE HOME COULD CAUSE FIRE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH.

2. IMPORTANT: This furnace is not approved or recommended for installation on its back, with access doors facing upwards.

3. This furnace is suitable for installation in buildings constructed on-site. This heating unit should be centralized with respect to the heat distribution system as much as practicable.

4. NOTE: These furnaces are approved for installation in attics, as

well as alcoves, utility rooms, closets and crawlspaces.

5. IMPORTANT: Support this unit when

installed. For attic or crawl space installation, horizontal furnaces may be installed on combustible wood flooring or by using support brackets. See Figure 2.

FIGURE 2

HORIZONTAL FURNACE INSTALLED W/SUPPORT BRACKETS

EXHAUST VENT

NOTE: Do not block furnace access with support rods. Maintain clearances recommended in Figure 3. Allow enough space for proper service maintenance or replacement of the heat exchanger and blower assembly.

6. IMPORTANT: If installing in a utility

room, be sure the door is wide enough to:

a. allow the largest part of the

b. allow any other appliance (such

furnace to pass; or

as a water heater) to pass.

ST-A0799-01

FIGURE 3

PFLOW/HORIZONTAL DIMENSIONS

Ship.

/32

/16

➀ May require 3” to 4” or 3” or 5” adapter.

➁ May be 0” with type B vent.

Back Top Front Vent

REDUCED CLEARANCE (IN.)

Left Right

Side Side Wgts.

/8 0 4➁ 0 1 3 6➂ 85 lbs.

/2 0 3➁ 0 1 3 6➂ 105 lbs.

/2 0 3➁ 0 1 3 6➂ 115 lbs.

/2 0 0 0 1 3 6➂ 120 lbs.

/2 0 0 0 1 3 6➂ 140 lbs.

/2 1

/8 ➀ 11

/8 ➀ 15 2

/32 10

/32 12

/2 16

/2 0 0 0 1 3 6➂ 150 lbs.

/2 2

/8 ➀ 18

/8 ➀ 22 2

/32 14

/32 15

/2 23

➂ May be 1” with type B vent.

/16

/32

/16

/8 DIA.

/32

ALTERNATE

GAS CONNECTION

RIGHT SIDE

FRONT

12 24

07 17

05 14 12

UPFLOW/HORIZONTAL MODELS

CLEARANCE TO COMBUSTIBLE MATERIAL (INCHES)

Model A B C D E F

10(A) 17

/32

15 24

10(B) 21 19

/32

SIGHT

GLASS

AIRFLOW

/32

AIR

BOTTOM

RETURN

/16

TOP

AIR

SUPPLY

GAS CONNECTION

25.406

LOW VOLTAGE

LEFT SIDE

ELECTRICAL CONNECTION

(EITHER SIDE) FOR USE WITH

EXTERNAL SIDE FILTER FRAME

OPTIONAL RETURN AIR CUTOUT

IMPORTANT: This furnace is not approved or recommended for

installation on its back, with access doors facing upwards.

FIGURE 4

DOWNFLOW DIMENSIONS

Ship.

Back Top Front Vent

REDUCED CLEARANCE (IN.)

/16

➀ May require 3” to 4” or 3” or 5” adapter.

➁ May be 0” with type B vent.

➂ May be 1” with type B vent.

/8 DIA.

/16

/8 DIA.

Left Right

Side Side Wgts.

/8 0 4➁ 0 1 3 6➂ 85 lbs.

/8 0 3➁ 0 1 3 6➂ 105 lbs.

/8 0 3➁ 0 1 3 6➂ 115 lbs.

/8 0 0 0 1 3 6➂ 120 lbs.

/8 0 0 0 1 3 6➂ 140 lbs.

/8 0 0 0 1 3 6➂ 150 lbs.

/16

/8 ➀ 13

/8 ➀ 16

/8 ➀ 20

/8 ➀ 23

/32 10

/32 12

/2 16

05 14 12

07 17

DOWNFLOW MODELS

CLEARANCE TO COMBUSTIBLE MATERIAL (INCHES)

Model A B C D E

10(A) 17

/8 ➀ 23

/32 13

/32 15

/2 23

12 24

15 24

10(B) 21 19

R.A.

SIGHT

GLASS

AIRFLOW

S.A.

/16

TOP BOTTOM

LOW VOLTAGE

/16

GAS CONNECTION

ELECTRIC CONNECTION

NOTE: IN DOWNFLOW CONFIGURATION, OPTIONAL AIR CUTOUT IS NOT PERMITTED.

CLEARANCE – ACCESSIBILITY

The design of forced air furnaces with

nput ratings as listed in the tables on

i the following pages are certified by CSA 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 inches is recommended in front of all furnaces.

ACCESSIBILITY CLEARANCES, WHERE GREATER, MUST TAKE PRECEDENCE OVER FIRE PROTECTION CLEARANCES.

WARNING

UPFLOW AND HORIZONTAL FURNACES MUST NOT BE INSTALLED DIRECTLY ON CARPETING, TILE OR OTHER COMBUSTIBLE MATERIAL OTHER THAN WOOD FLOORING. INSTALLATION ON A COMBUSTIBLE MATERIAL CAN RESULT IN FIRE CAUSING PROPERTY DAMAGE, SEVERE PERSONAL INJURY OR DEATH.

A gas-fired furnace for installation in a residential garage must be installed so that the burner(s) and the ignition source are located not less than 18” above the floor and the furnace is located or protected to avoid physical damage by vehicles.

WARNING

DOWNFLOW UNIT DESIGN IS CERTIFIED FOR INSTALLATION ON NON-COMBUSTIBLE FLOOR. A SPECIAL COMBUSTIBLE FLOOR SUB-BASE IS REQUIRED WHEN INSTALLING ON A COMBUSTIBLE FLOOR. FAILURE TO INSTALL THE SUB-BASE MAY RESULT IN FIRE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. THIS SPECIAL BASE IS OFFERED AS AN ACCESSORY FROM THE FACTORY. SEE THE CLEARANCE LABEL LOCATED INSIDE THE FURNACE FOR THE APPROPRIATE MODEL NUMBER.

THE SPECIAL BASE IS NOT REQUIRED WHEN THE FURNACE IS INSTALLED ON TOP OF AN AIR CONDITIONING PLENUM.

TABLE 1

FURNACE BASE BASE

IDTH

/2” RXGB-D17 151/8” x 239/16”

21” RXGB-D21 18

/2” RXGB-D24 255/8” x 239/16”

LATE NO.

LATE SIZE

/8” x 239/16”

SITE SELECTION

1. Select a site in the building near the center of the proposed, or existing, duct system.

2. Give consideration to the vent system piping when selecting the furnace location. Be sure the venting system can travel from the furnace to the termination with minimal length and elbows.

3. Locate the furnace near the existing gas piping. Or, if running a new gas line, locate the furnace to minimize the length and elbows in the gas piping.

4. Locate the furnace to maintain proper clearance to combustibles as shown in Figures 3 and 4.

CAUTION

WHEN COILS ARE USED WITH AIR HANDLERS OR FURNACES AND INSTALLED ABOVE A FINISHED CEILING OR LIVING AREA, IT IS RECOMMENDED THAT AN AUXILIARY SHEET METAL CONDENSATE DRAIN PAN BE FABRICATED AND INSTALLED UNDER ENTIRE UNIT. FAILURE TO DO SO CAN RESULT IN PROPERTY DAMAGE. RUN CONDENSATE TO A LOCATION WHERE IT IS NOTICEABLE.

WARNING

COMBUSTIBLE MATERIAL MUST NOT BE PLACED ON OR AGAINST THE FURNACE JACKET OR WITHIN THE SPECIFIED CLEARANCES OF THE VENT PIPE. THE AREA AROUND THE FURNACE MUST BE KEPT CLEAR AND FREE OF ALL COMBUSTIBLE MATERIALS INCLUDING GASOLINE AND OTHER FLAMMABLE VAPORS AND LIQUIDS. PLACEMENT OF COMBUSTIBLE MATERIALS ON, AGAINST OR AROUND THE FURNACE JACKET CAN CAUSE AN EXPLOSION OR FIRE RESULTING IN PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. THE FURNACE OWNER SHOULD BE CAUTIONED THAT THE FURNACE AREA MUST NOT BE USED AS A BROOM CLOSET OR FOR ANY OTHER STORAGE PURPOSES.

DUCTING

Proper air flow is required for the correct operation of this furnace. Too

ittle air flow can cause erratic

l operation and can damage the heat exchanger. The duct system must

arry the correct amount of air for

c heating and cooling. Position the unit minimize long runs or runs with many

urns and elbows.

Size the ducts according to acceptable industry standards and methods. The total static pressure drop (including evaporator coil, if used) of the entire system should not exceed 0.5” w.c. Be sure to have adequate space for unit filter. NOTE: Airflow external static pressure measurements do not include filter or coil.

IMPORTANT: Some high efficiency filters have a greater than normal resistance to air flow. This can adversely affect furnace operation. BE SURE TO CHECK AIR FLOW if using any filter other than the factoryprovided filter.

NOTE: DO NOT take return air from bathrooms, kitchens, furnace rooms, garages, utility or laundry rooms, or cold areas.

IMPORTANT: When using outside air, design and adjust the system to maintain a return air temperature above 50°F during the heating season.

WARNING

NEVER ALLOW PRODUCTS OF COMBUSTION OR THE FLUE PRODUCTS TO ENTER THE RETURN AIR DUCTWORK, OR THE CIRCULATING AIR SUPPLY. ALL RETURN DUCTWORK MUST BE ADEQUATELY SEALED AND SECURED TO THE FURNACE WITH SHEET METAL SCREWS, AND JOINTS TAPED. WHEN A FURNACE IS MOUNTED ON A PLATFORM, WITH RETURN THROUGH THE BOTTOM, IT MUST BE SEALED AIRTIGHT BETWEEN THE FURNACE AND THE RETURN AIR PLENUM. THE RETURN AIR PLENUM MUST BE PERMANENTLY ENCLOSED. NEVER USE A DOOR AS A PART OF THE RETURN AIR PLENUM. THE FLOOR OR PLATFORM MUST PROVIDE SOUND PHYSICAL SUPPORT OF THE FURNACE, WITHOUT SAGGING, CRACKS, GAPS, ETC., AROUND THE BASE AS TO PROVIDE A SEAL BETWEEN THE SUPPORT AND THE BASE.

FAILURE TO PREVENT PRODUCTS OF COMBUSTION FROM BEING CIRCULATED INTO THE LIVING SPACE CAN CREATE POTENTIALLY HAZARDOUS CONDITIONS, INCLUDING CARBON MONOXIDE POISONING THAT COULD RESULT IN PERSONAL INJURY OR DEATH.

DO NOT, UNDER ANY CIRCUMSTANCES, CONNECT

ETURN OR SUPPLY DUCTWORK

R TO OR FROM ANY OTHER HEAT PRODUCING DEVICE SUCH AS A

IREPLACE INSERT, STOVE, ETC.

F DOING SO MAY RESULT IN FIRE, CARBON MONOXIDE POISONING,

XPLOSION, PERSONAL INJURY

E OR PROPERTY DAMAGE.

WARNING

BLOWER AND BURNERS MUST NEVER BE OPERATED WITHOUT THE BLOWER DOOR IN PLACE. THIS IS TO PREVENT DRAWING GAS FUMES (WHICH COULD CONTAIN HAZARDOUS CARBON MONOXIDE) INTO THE HOME THAT COULD RESULT IN PERSONAL INJURY OR DEATH.

UPFLOW UNITS

1. Set furnace in place and connect the return duct or return air cabinet to unit. Make the connection air-tight to prevent entraining combustion gases from any adjacent fuelburning appliances. Unit return air may be connected on the sides or bottom of the return air compartment.

a. Openings in the side must be cut

out the full width of the knockouts on the unit. If using side return air,

THE BOTTOM base plate must be installed.

NOTE: Where the maximum

airflow is 1800 CFM or more, both sides or the bottom must be used for return air.

b. If using bottom return air, place

furnace over return air plenum and seal furnace bottom to return air plenum.

WARNING

A SOLID METAL BASE PLATE, (SEE TABLE 1) MUST BE IN PLACE WHEN THE FURNACE IS INSTALLED WITH SIDE AIR RETURN DUCTS. FAILURE TO INSTALL A BASE PLATE COULD CAUSE PRODUCTS OF COMBUSTION TO BE CIRCULATED

NTO THE LIVING SPACE AND

I CREATE POTENTIALLY HAZARDOUS CONDITIONS, INCLUDING CARBON MONOXIDE POISONING OR DEATH.

2. If summer air conditioning is desired, position the indoor coil on the supply air side of the furnace. Insure that no air can bypass this coil.

3. Connect the supply air plenum to the furnace plenum opening.

DOWNFLOW UNITS

WARNING

THE DOWNFLOW FURNACE DESIGN IS CERTIFIED FOR INSTALLATION ON A NONCOMBUSTIBLE FLOOR. IF INSTALLED ON A COMBUSTIBLE FLOOR, USE THE SPECIAL BASE SPECIFIED ON THE FURNACE CLEARANCE LABEL. FAILURE TO INSTALL THE SPECIAL BASE MAY RESULT IN FIRE, PROPERTY DAMAGE, PERSONAL INJURY OR DEATH. THIS SPECIAL BASE IS SHIPPED FROM THE FACTORY AS AN ACCESSORY.

1. Position the unit over the supply air plenum and connect.

a. If installing on a combustible floor

and not using an evaporator coil box, install the special

combustible floor base. See Figure 5.

FIGURE 5

COMBUSTIBLE FLOOR BASE

b. If summer air conditioning is

desired, position the indoor coil on the bottom of the unit. Insure that no air can bypass this coil.

2. Connect the return air ducting to the return air opening at the top of the unit. Make the connection air tight to

revent entraining combustion

p gases from an adjacent fuel-burning appliance.

HORIZONTAL UNITS

1. Unit can be mounted left or right side airflow configuration.

2. Position the unit on adequate supports or by using support brackets (see Figure 3) and connect supply plenum.

3. If summer air conditioning is desired, position the indoor coil on the supply air side of the unit. Insure that no air can bypass this coil.

4. Secure the four angle brackets shipped with the unit to the return air opening. See Figure 7. Connect the return air ducting to the return air opening at the top of the unit. Make the connection air tight to prevent entraining combustion gases from an adjacent fuel-burning appliance.

FIGURE 6

HORIZONTAL RETURN AIR DUCT

LEFT-HAND AIRFLOW POSITION SHOWN)

(

IRFLOW

ETURN

REAR VIEW

FOUR ANGLE BRACKETS ARE SHIPPED WITH EACH

NIT THAT CAN BE INSTALLED HORIZONTALLY. THESE

U BRACKETS MAY BE USED TO SECURE THE RETURN AIR DUCT TO A HORIZONTAL UNIT.

COMBUSTION AND VENTILATION AIR

IMPORTANT: This is not a direct vent furnace. Review venting instructions before installing.

• Commercial buildings

• Buildings with indoor pools

• Furnaces installed in laundry rooms

• Furnaces in hobby or craft rooms

• Furnaces installed near chemical storage areas.

Exposure to the following substances

n the combustion air supply may also

i require OUTDOOR AIR for combustion:

• Permanent wave solutions

• Chlorinated waxes and cleaners

• Chlorine-based swimming pool chemicals

• Water softening chemicals

• De-icing salts or chemicals

• Carbon tetrachloride

• Halogen type refrigerants

• Cleaning solvents (such as perchloroethylene)

• Printing inks, paint removers, varnishes, etc.

• Hydrochloric acid

• Cements and glues

• Antistatic fabric softeners for clothes dryers

• Masonry acid washing materials

WARNING

THIS FURNACE AND ANY OTHER FUEL-BURNING APPLIANCE MUST BE PROVIDED WITH ENOUGH FRESH AIR FOR PROPER COMBUSTION AND VENTILATION OF THE FLUE GASES. MOST HOMES WILL REQUIRE THAT OUTSIDE AIR BE SUPPLIED INTO THE FURNACE AREA. FAILURE TO DO SO CAN CAUSE DEATH FROM CARBON MONOXIDE POISONING.

Adequate facilities for providing air for combustion and ventilation must be provided in accordance with section

5.3, Air for Combustion and Ventilation, of the National Fuel Gas Code, ANSI, Z223.1 latest edition or CSA B149.1 and .2 or, applicable provisions for the local building codes, and not obstructed so as to prevent the flow of air to the furnace.

COMBUSTION AIR REQUIREMENTS

IMPORTANT: Air for combustion and ventilation must not come from a corrosive atmosphere. Any failure due to corrosive elements in the atmosphere is excluded from warranty coverage.

The following types of installation may require OUTDOOR AIR for combustion, due to chemical exposures:

FIGURE 7

AIR FROM HEATED SPACE

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