Installation Instructions

ManualsBrandsGoodman ManualsCooling & Air Quality60,000 BTU 96% AFUE 2 Stage Gas Furnace - Downflow/Horizontal

*MEC96 & *CEC96

-S

TAGE

URNACES

IOG-2011L

01/2018

(Type FSP CATEGORY IV Direct

or Non Direct Vent Air Furnace)

These furnaces comply with requirements em-

bodied in the American National Standard / Na-

tional Standard of Canada ANSI Z21.47·CSA-2.3

Gas Fired Central Furnaces.

Installer:

Affix all manuals

adjacent to the unit.

s a professional installer you have an obligation to know

the product better than the customer. This includes all safety

precautions and related items.

Prior to actual installation, thoroughly familiarize yourself

with this Instruction Manual. Pay special attention to all

safety warnings. Often during installation or repair it is

possible to place yourself in a position which is more

hazardous than when the unit is in operation.

Remember, it is your responsibility to install the product

safely and to know it well enough to be able to instruct a

customer in its safe use.

Safety is a matter of common sense...a matter of thinking

before acting. Most dealers have a list of specific good

safety practices...follow them.

The precautions listed in this Installation Manual are intended

as supplemental to existing practices. However, if there is

a direct conflict between existing practices and the content

of this manual, the precautions listed here take precedence.

RECOGNIZE THIS SYMBOL

AS A SAFETY PRECAUTION.

*NOTE: Please contact your distributor or our website for

the applicable Specification Sheet referred to in this manual.

TABLE OF CONTENTS

AFETY CONSIDERATIONS .................................... 2

HIPPING INSPECTION ............................................ 4

LECTROSTATIC DISCHARGE (ESD) PRECAUTIONS ................... 4

TO THE INSTALLER .............................................. 5

PRODUCT DESCRIPTION......................................... 5

EATURES ....................................................... 5

PRODUCT APPLICATION ......................................... 5

LOCATION REQUIREMENTS & CONSIDERATIONS ........... 6

LEARANCES AND ACCESSIBILITY ................................... 7

EXISTING FURNACE REMOVAL ..................................... 8

THERMOSTAT LOCATION .......................................... 8

OMBUSTION & VENTILATION AIR REQUIREMENTS .................. 8

INSTALLATION POSITIONS ...................................... 9

ORIZONTAL APPLICATIONS & CONSIDERATIONS ..................... 9

URNACE SUSPENSION ........................................... 9

RONT COVER PRESSURE SWITCH TUBE LOCATION ................. 9

DRAIN TRAP AND LINES .........................................10

HORIZONTAL FURNACE LEVELING ................................10

ALTERNATE ELECTRICAL AND GAS LINE CONNECTIONS .............10

DRAIN PAN ....................................................10

FREEZE PROTECTION ............................................10

PROPANE GAS/HIGH ALTITUDE INSTALLATIONS ..........10

VENT/FLUE PIPE & COMBUSTION AIR PIPE .................10

UAL CERTIFICATION: NON-DIRECT/DIRECT VENT ................11

MATERIALS AND JOINING METHODS ..............................11

PROPER VENT/FLUE AND COMBUSTION AIR PIPING PRACTICES .....11

TERMINATION LOCATIONS ........................................12

CANADIAN VENT PIPE AND COMBUSTION AIR PIPE REQUIREMENTS ..12

STANDARD FURNACE CONNECTIONS ..............................13

VENT/FLUE PIPE ..............................................13

NON-DIRECT VENT (SINGLE PIPE) PIPING ........................15

VENT/INTAKE TERMINATIONS FOR INSTALLATION

MULTIPLE DIRECT VENT FURNACES ........................17

CONCENTRIC VENT TERMINATION .................................18

SIDE WALL VENT KIT ..........................................18

CONDENSATE DRAIN LINES & DRAIN TRAP .................18

ENERAL DRAIN INFORMATION ...................................18

FIELD SUPPLIED DRAIN .........................................18

UPFLOW MODEL INSTALLED VERTICALLY ..........................19

DRAIN EXITING RIGHT SIDE .....................................19

DRAIN EXITING LEFT SIDE ......................................20

UPFLOW MODEL INSTALLED HORIZONTALLY

WITH

RIGHT SIDE DOWN .....................................20

UPFLOW MODEL INSTALLED HORIZONTALLY

WITH

LEFT SIDE DOWN ......................................20

COUNTERFLOW MODEL INSTALLED VERTICALLY...................21

DRAIN EXITING LEFT SIDE.....................................21

DRAIN EXITING RIGHT SIDE....................................22

COUNTERFLOW MODEL INSTALLED HORIZONTALLY WITH

RIGHT SIDE DOWN...........................................22

COUNTERFLOW MODEL INSTALLED HORIZONTALLY WITH

LEFT SIDE DOWN............................................23

5151 San Felipe Suite 500

Houston, TX 77056

www.goodmanmfg.com • www.amana-hac.com

Summary of content (60 pages)

PAGE 1
*MEC96 & *CEC96 TWO-STAGE GAS FURNACES (Type FSP CATEGORY IV Direct or Non Direct Vent Air Furnace) These furnaces comply with requirements embodied in the American National Standard / National Standard of Canada ANSI Z21.47·CSA-2.3 Gas Fired Central Furnaces. Installer: Affix all manuals adjacent to the unit. As a professional installer you have an obligation to know the product better than the customer. This includes all safety precautions and related items.
PAGE 2
ELECTRICAL CONNECTIONS ................................... 24 WIRING HARNESS ............................................... 24 115 VOLT LINE CONNECTIONS .................................. 24 JUNCTION BOX RELOCATION ..................................... 24 24 VOLT THERMOSTAT WIRING .................................. 25 SINGLE-STAGE HEATING THERMOSTAT APPLICATION ................ 25 FOSSIL FUEL APPLICATIONS ...................................... 25 TWINNING ...................................................
PAGE 3
Always install a furnace to operate within the furnace’s intended temperature-rise range with a duct system which has external static pressure within the allowable range, as specified on the furnace rating plate and OPERATIONAL CHECKS section of these instructions. WARNING THIS PRODUCT CONTAINS OR PRODUCES A CHEMICAL OR CHEMICALS WHICH MAY CAUSE SERIOUS ILLNESS OR DEATH AND WHICH ARE KNOWN TO THE STATE OF C ALIFORNIA TO CAUSE CANCER , BIRTH DEFECTS OR OTHER REPRODUCTIVE HARM .
PAGE 4
RISQUE D'EMPOISONNEMENT AU MONOXYDE DE CARBONE Advertencia especial para la instalación de calentadores ó manejadoras de aire en áreas cerradas como estacionamientos ó cuartos de servicio. Las emisiones de monóxido de carbono pueden circular a través del aparato cuando se opera en cualquier modo. CO can cause serious illness including permanent brain damage or death.
PAGE 5
4. Discharge your body to ground before removing a new control from its container. Follow steps 1 through 3 if installing the control on a furnace. Return any old or new controls to their containers before touching any ungrounded object. • • TO THE INSTALLER It must be installed as a two-pipe system for combustion air.
PAGE 6
• • • A T-handle gas cock must be used. If the unit is to be installed in an attic, the passageway to and the service area around the unit must have flooring. • To ensure proper furnace operation, install, operate and maintain the furnace in accordance with these installation and operation instructions, all local building codes and ordinances. In their absence, follow the latest edition of the National Fuel Gas Code (NFPA 54/ANSI Z223.1), and/or CAN/CSA B149.
PAGE 7
• • • • • • • enclosed non-direct vent furnace has an adequate supply of combustion air, vent from a nearby uncontaminated room or from outdoors. Refer to the Combustion and Ventilation Air Requirements for details. If the furnace is used in connection with a cooling coil unit, install the furnace upstream or in parallel with the cooling coil unit. Premature heat exchanger failure will result if the cooling unit is placed ahead of the furnace.
PAGE 8
A furnace installed in a confined space (i.e., a closet or utility room) must have two ventilation openings with a total minimum free area of 0.25 square inches per 1,000 BTU/hr of furnace input rating. Refer to Specification Sheet applicable to your model for minimum clearances to combustible surfaces. One of the ventilation openings must be within 12 inches of the top; the other opening must be within 12 inches of the bottom of the confined space.
PAGE 9
Recommended Installation Positions Most homes will require outside air be supplied to the furnace area by means of ventilation grilles or ducts connecting directly to the outdoors or spaces open to the outdoors such as attics or crawl spaces. *MEC96 models may be installed upflow or horizontally with left or right side down. *CEC96 models may be installed down flow or horizontally with left or right side down. Do not install this furnace on its back.
PAGE 10
DRAIN TRAP AND LINES For installations above 7000 feet, please refer to the furnace Specification Sheets for required kit(s). In horizontal applications the condensate drain trap is secured to the furnace side panel, suspending it below the furnace. A minimum clearance of 5.5” below the furnace must be provided for the drain trap. Additionally, the appropriate downward piping slope must be maintained from the drain trap to the drain location. Refer to Condensate Drain Trap and Lines for further details.
PAGE 11
the transition from 2" to 3" should be done as close to the furnace as practically possible. pipe must meet ASTM D1527 and, if used in Canada, must be CSA listed. Solvent cement for ABS to ABS joints must meet ASTM D2235 and, if used in Canada, must be CSA listed. The solvent cement for the PVC to ABS transition joint must meet ASTM D3138. Fittings must be DWV type fittings meeting ASTM D2661 and ASTM D3311 and, if used in Canada, must be CSA listed.
PAGE 12
• NO TRANSITION ON HORIZONTAL PLANE, THIS CREATES A WATER TRAP AND RESTRICTS FLUE GASES • • Figure 6 Piping must be adequately secured and supported to prohibit sagging, joint separation, and/or detachment from the furnace. Horizontal runs of vent/flue piping must be supported every three to five feet and must maintain a 1/4 inch per foot downward slope, back towards the furnace, to properly return condensate to the furnace’s drain system.
PAGE 13
service personnel. All fire stops and roof flashings used with this system must be UL listed. Acceptability under CAN/CSA B149.1-15 is dependent upon full compliance with all installation instructions. Consult the authority having jurisdiction (gas inspection authority, municipal building department, fire department, etc.) before installation to determine the need to obtain a permit. *IPEX System 636™ is a trademark of IPEX Inc.
PAGE 14
CUT HERE NOTE: In the horizontal left installation position, a means of condensate collection must be provided to keep vent pipe condensate from entering the draft inducer housing. If the vent drain elbow is eliminated from the installation, an RF000142 kit must be used. 1. Remove the four screws from the vent pipe flange on top the furnace. 2. Remove the internal elbow and vent pipe 3. Cut 2 1/2" from the flange . 4. Remove plastic plug in line with the inducer outlet 5.
PAGE 15
DOWN VENTING UPFLOW MODEL FURNACES ONLY Use alternate vent & combination air locations Vent Pipe 6’ Max. Floor Combustion Air Pipe Field Supplied Drain Tee on Vent Pipe men B a se t e lspac w a r /C 1/4” per foot min. slope to furnace Condensate trapped to prevent flue gas from escaping and routed to field supplied condensate disposal All piping and fittings must be joined per material manufacturers specifications to prevent separation and flue gas leaks.
PAGE 16
VENT/FLUE PIPE LENGTHS AND DIAMETERS VENT/FLUE PIPE TERMINATIONS For installations at or above 7,000 feet altitude, use 3” venting. Refer to the following table for applicable length, elbows, and pipe diameter for construction of the vent/flue pipe system of a non-direct vent installation. In addition to the vent/flue pipe, a single 90° elbow should be secured to the combustion air intake to prevent inadvertent blockage.
PAGE 17
VENT/FLUE 10”- 24” AND COMBUSTION AIR PIPE TERMINATIONS The vent/flue and combustion air pipes may terminate vertically, as through a roof, or horizontally, as through an outside wall. 6” MAX Vertical pipe terminations should be as shown in the following figure. Refer to Vent/Flue Pipe and Combustion Pipe - Termination Locations for details concerning location restrictions. The penetrations through the roof must be sealed tight with proper flashing such as is used with a plastic plumbing vent.
PAGE 18
CONCENTRIC VENT TERMINATION • Refer to the directions provided with the Concentric Vent Kit (CVENT) for installation specifications. SIDE WALL VENT KIT This kit is to be used with 2” or 3” direct vent systems. The vent kit must terminate outside the structure and may be installed with the intake and exhaust pipes located side-by-side or with one pipe above the other. These kits are NOT intended for use with single pipe (non-direct vent) installations.
PAGE 19
UPFLOW MODEL INSTALLED VERTICALLY The trap and factory installed hoses remain as shipped. The furnace drain may exit either the right or left side of the furnace cabinet. Both sides of the cabinet have two .875” diameter holes which can be used interchangeably for drain and low voltage wiring purposes. If a higher drain exit is needed, a .875” diameter hole may be added in the area shown in Figure 21. Any unused cabinet opening must be sealed. Do not allow drain hose to sag or trap water.
PAGE 20
the top. Secure it to the barbed fitting in the elbow with a red clamp. 6. For models DM96VE0303AN, DM96VE0403AN and DM96VE0603AN; locate the hose #2 (factory installed) and cut 1.5” length from the end of the hose. Insert hose #2 from outside the cabinet through the cabinet drain’s hole nearest to the top. Secure it to the barbed fitting in the elbow with a red clamp. 7. (Draining the Collector Box) Install the non-grommet end of hose #11 from outside the cabinet in the bottom drain hole.
PAGE 21
UPFLOW MODEL INSTALLED HORIZONTALLY DOWN-ALTERNATE a “D” width cabinet, 5" for a “C” width cabinet, 8 ½” for a “B” width cabinet. 6. Remove the rubber plug from vent – drain elbow side port. Place hose #6 on the vent – drain elbow side port and secure with a silver clamp . 7. Unused vent-drain elbow drip leg port must be sealed to prevent flue gases from escaping.
PAGE 22
DRAIN EXITING LEFT SIDE (SEE FIGURE 26) 1. Install a field supplied rubber coupling secured with a 1 1/4” clamp to enable removing the trap for future cleaning. Alternately, a PVC fitting may be glued on the trap outlet. 2. Install drain per local and National codes. Figure 27 COUNTERFLOW MODEL INSTALLED HORIZONTALLY RIGHT SIDE DOWN (SEE FIGURE 28) WITH Minimum 5 1/2” clearance is required for the drain trap beneath the furnace.
PAGE 23
Hose #7 9. Place radius end of hose #4 on the side port of vent – drain elbow and secure with a gold clamp. 10. Insert a ½” diameter PVC pipe (factory installed) into hose #4 and secure with a gold clamp. 11. Insert the non-grommet end of hose #5 (factory installed) from outside the cabinet in the back drain hole. 12. Insert 100º elbow in hose #5 and secure with a red clamp. 13. Locate hose #4 and cut a cut off a 4” straight section and discard the radius end. 14.
PAGE 24
ELECTRICAL CONNECTIONS the opposite side of the furnace, the junction box must be relocated to the other side of the burner compartment prior to making electrical connections. To relocate the junction box, follow the steps shown below. WIRING HARNESS The wiring harness is an integral part of this furnace. Wires are color coded for identification purposes. Refer to the wiring diagram for wire routings.
PAGE 25
24 VOLT THERMOSTAT WIRING SINGLE-STAGE HEATING THERMOSTAT APPLICATION A single-stage thermostat with only one heating stage may be used to control this furnace. The application of a singlestage thermostat offers a timed transition from low to high fire. The furnace will run on low stage for a fixed period of time before stepping up to high stage to satisfy the thermostat’s call for heat.
PAGE 26
TWINNING all local codes, and have a minimum temperature rating of 105°C. All line voltage wire splices must be made inside the furnace junction box. Using the “TWIN” terminals and proper wiring enables two *MEC96 furnaces of the same model and size to be twinned. Twinning allows simultaneous operation of two furnaces and forces the indoor blower motors of each furnace to operate synchronously into a common duct system.
PAGE 27
Inlet gas supply pressures must be maintained within the ranges specified in the adjacent table. The supply pressure must be constant and available with all other household gas fired appliances operating. The minimum gas supply pressure must be maintained to prevent unreliable ignition. The maximum must not be exceeded to prevent unit overfiring.
PAGE 28
• reamed, and free of burrs and chips. If old pipe is used, be sure it is clean and free of rust, scale, burrs, chips, and old pipe joint compound. Use pipe joint compound on male threads ONLY. Always use pipe joint compound (pipe dope) that is APPROVED FOR ALL GASSES. DO NOT apply compound to the first two threads. location of union and cabinet width. The union may be placed inside or outside of the cabinet. Alternate Gas Line Location • Use ground joint unions.
PAGE 29
CIRCULATING AIR & FILTERS PROPANE GAS TANKS AND PIPING DUCT WORK - AIR FLOW WARNING Duct systems and register sizes must be properly designed for the CFM and external static pressure rating of the furnace. Design the ductwork in accordance with the recommended methods of “Air Conditioning Contractors of America” Manual D.
PAGE 30
To determine total external duct static pressure, proceed as follows; NOTE: Both readings may be taken simultaneously and read directly on the manometer if so desired. If an air conditioner coil or Electronic Air Cleaner is used in conjunction with the furnace, the readings must also include theses components, as shown in the following drawing. 1. With clean filters in the furnace, use a draft gauge (inclined manometer) to measure the static pressure of the return duct at the inlet of the furnace.
PAGE 31
CUT USING TIN SNIPS PRESS OUT BY HAND CUT FOUR CORNERS AFTER REMOVING SHEET METAL SCRIBE LINES OUTLINING DUCT FLANGES Duct Flange Cut Outs Figure 37 Checking Static Pressure (80% Furnace Shown, 90% Similar) Figure 36 FILTERS - READ THIS SECTION BEFORE INSTALLING THE RETURN AIR DUCT WORK WARNING Filters must be used with this furnace. Discuss filter maintenance with the building owner. Filters do not ship with this furnace, but must be provided, sized and installed externally by the installer.
PAGE 32
UPRIGHT INSTALLATIONS proper furnace drainage upon startup and prohibits the possibility of flue gases escaping through the drain system. Depending on the installation and/or customer preference, differing filter arrangements can be applied. Filters can be installed in the central return register or a side panel external filter rack kit (upflows). As an alternative a media air filter or electronic air cleaner can be used as the requested filter.
PAGE 33
2. Connect a calibrated water manometer (or appropriate gas pressure gauge) at either the gas valve inlet pressure tap or the gas piping drip leg. See White-Rodgers 36J54 gas valve figure for location of inlet pressure tap. Manifold Gas Pressure Gas Range Natural Low Stage 1.6 - 2.2" w .c. High Stage 3.2 - 3.8" w .c. Propane Low Stage 5.7 - 6.3" w .c. High Stage 9.7 - 10.3" w .c.
PAGE 34
DIP SWITCH SETTINGS PCBBF137 CONTROL BOARD DIP SWITCHES Thermostat Selection Switches 1 Heating Fan Off Delay 3 Heating CFM Switches S1 2 DIP DIP Swi tch Swi tch Purpos e Group Number 4 1 S3 1 1, 2 Hea t Sta gi ng / Del a y 3, 4 Bl ower Hea t Off Del a y S1 2 2 Functi on Auto 10 Mi nutes 20 Mi nutes 2 Sta ge 90 Seconds 120 Seconds 150 Seconds 180 Seconds 1 OFF* 1 ON 1 ON 1 OFF 3 OFF 3 OFF 3 ON* 3 ON* 2 ON* 2 OFF 2 ON 2 OFF 4 OFF 4 ON 4 OFF* 4 ON * = Fa ctory Pos i ti on 3 Cooling CFM Sw
PAGE 35
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Sw itches S2-1 S2-2 S2-3 DIP Sw itches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF ON OFF OFF ON ON OFF / OFF ON ON ON ON OFF OFF ON OFF^ OFF ON OFF^ OFF OFF ON^ OFF OFF ON^ NA OFF ON ON^ ON OFF ON ON OFF ON ON ON ON^ ON ON ON^ *MEC960303AN - COOLING 0.1 CFM Static Tstat Call Ylo Y Ylo Y Ylo Y Ylo Y Ylo Y Ylo Y Ylo Y Ylo Y 0.2 CFM 0.3 CFM 0.4 CFM 0.5 CFM 0.6 CFM 0.7 CFM 0.
PAGE 36
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Sw itches S2-1 S2-2 S3-3 DIP Sw itches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF ON OFF OFF ON ON OFF / OFF ON ON ON ON OFF OFF ON OFF^ OFF ON OFF^ OFF OFF ON *MEC960403AN - COOLING Static 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 37
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Sw itches S2-1 S2-2 S3-3 DIP Sw itches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF ON OFF OFF ON ON OFF / OFF ON ON ON ON OFF OFF ON OFF^ OFF ON OFF^ OFF OFF ON OFF OFF ON NA OFF ON ON^ ON OFF ON ON OFF ON ON ON ON^ *MEC960603AN - COOLING Static 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 38
DIP SWITCH SETTINGS PCBBF139 PCBBF137 DIP Switches S2-1 S2-2 S2-3 DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF ON OFF OFF ON ON OFF / OFF ON ON ON ON OFF OFF ON OFF^ OFF ON OFF^ OFF OFF ON^ 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 39
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Switches S2-1 S2-2 S3-3 DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF *MEC960402BN - COOLING Static 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 40
DIP SWITCH SETTINGS PCBBF139 *CEC960403BN - COOLING DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF ON OFF OFF ON ON OFF OFF ON OFF^ OFF OFF ON^ OFF ON ON ON OFF ON ON ON ON^ Static 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 41
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Switches S2-1 S2-2 S2-3 DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF ON OFF OFF ON ON OFF / OFF ON ON ON ON OFF OFF ON OFF^ OFF ON OFF^ OFF OFF ON **EC960603BN - COOLING Static 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 42
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Switches S2-1 S2-2 S2-3 DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF ON OFF OFF ON ON OFF / OFF ON ON ON ON OFF OFF ON OFF OFF ON OFF OFF OFF ON OFF OFF ON NA OFF ON ON ON OFF ON^ ON OFF ON^ ON ON ON^ ON ON ON^ PCBBF137 PCBBF139 DIP Switches **EC960803BN - COOLING Static 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 43
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Switches S2-1 S2-2 S2-3 DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF^ ON OFF OFF^ *MEC960804CN - COOLING Static 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 44
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Switches S2-1 S2-2 S2-3 DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF^ ON OFF OFF^ ON ON OFF / OFF ON ON ON ON OFF OFF ON OFF OFF ON OFF OFF OFF ON OFF OFF ON NA OFF ON ON^ ON OFF ON^ ON OFF ON^ ON ON ON^ ON ON ON^ PCBBF137 PCBBF139 DIP Switches *MEC961004CN - COOLING 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 45
DIP SWITCH SETTINGS PCBBF139 *CEC961005CN - COOLING DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF ON OFF OFF ON ON OFF OFF ON OFF^ OFF OFF ON OFF ON ON^ ON OFF ON Static 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 46
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Switches S2-1 S2-2 S2-3 DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF^ ON OFF OFF^ ON ON OFF / OFF ON ON *MEC961005CN - COOLING Static 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 47
DIP SWITCH SETTINGS PCBBF137 PCBBF139 DIP Switches S2-1 S2-2 S2-3 DIP Switches S1-1 S1-2 S1-3 **OFF OFF OFF **OFF OFF OFF ON OFF OFF^ ON OFF OFF^ ON ON OFF / OFF ON ON ON ON OFF OFF ON OFF OFF ON OFF OFF OFF ON OFF OFF ON NA OFF ON ON^ ON OFF ON^ ON OFF ON^ ON ON ON^ ON ON ON^ PCBBF137 PCBBF139 DIP Switches DIP Switches S2-2 S2-3 S2-4 *MEC961205DN - COOLING 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.
PAGE 48
the specified setting. Consult your local gas supplier if additional input rate adjustment is required. 4. Turn ON gas to and relight all other appliances turned off in step 1. Be certain that all appliances are functioning properly and that all pilot burners are operating. Manometer Hose Open to Atmosphere Outlet Pressure Boss High Fire Regulator Adjust Regulator Vent TEMPERATURE RISE Temperature rise must be within the range specified on the unit rating plate.
PAGE 49
PCBBF139 CONTROL BOARD and not switched by the control board. Motor operation is also dependent on a pulsing D.C. signal on one of the four speed taps on the motor. The airflow tables for heating and cooling speeds show the relationship between airflow (CFM) and external static pressure for each size furnace.
PAGE 50
• • • • • • • Following the completion of pre-purge, the inducer switches to low speed and the igniter warm up period begins. After completion of the igniter warm up period: a. Trial for ignition begins. b. The first stage of the gas valve is energized. The igniter is de-energized when flame is sensed or at the conclusion of the ignition activation period (IAP), whichever comes first. When flame is sensed, the delay to heat on period begins timing.
PAGE 51
AUXILIARY LIMIT objects, etc.). If you come in contact with an ungrounded object, repeat step 2 before touching control or wires. 4. Discharge your body to ground before removing a new control from its container. Follow steps 1 through 3 if installing the control on a furnace. Return any old or new controls to their containers before touching any ungrounded object. The auxiliary limit controls are located on or near the circulator blower and monitors blower compartment temperatures.
PAGE 52
Internal Lockout A failure internal to the control board. If the limit circuit opens and does not close within five minutes, the control assumes the blower has failed the RED LED will flash ELEVEN times. FAULT RECALL If the limit circuit opens and does not close within fifteen minutes, the control assumes the manual rollout or fuse has opened and the RED LED will flash FIVE times. The control will enter a one hour lockout and the inducer will run continuously.
PAGE 53
seconds. Release the switch when the LED is turned off. The diagnostic LED will then display the flash codes associated with the last five detected faults. The order of display is the most recent fault to the least recent fault. WARNING TO AVOID ELECTRICAL SHOCK , INJURY OR DEATH, DISCONNECT ELECTRICAL POWER BEFORE PERFORMING ANY RESETTING FROM LOCKOUT MAINTENANCE.
PAGE 54
FLAME SENSOR (QUALIFIED SERVICER ONLY) WARNING Under some conditions, the fuel or air supply can create a nearly invisible coating on the flame sensor. This coating acts as an insulator causing a drop in the flame sense signal. If the flame sense signal drops too low the furnace will not sense flame and will lock out. The flame sensor should be carefully cleaned by a qualified servicer using steel wool.
PAGE 55
TROUBLESHOOTING CHART Symptoms Green LED Code Amber LED Code Red LED Code Fault Description Check Cautions •Furnace fails to operate •None •Control board LED is off •None •None •Defective disconnect switch •Determine cause and restore •Confirm electrically safe •defective door switch • No proper high and low volt power condition before 115 volt power •No 24 volt supply proceeding with repairs power •Furnace is waiting for a •Solid ON call •None •None •Furnace is not receiving a call •None Req
PAGE 56
TROUBLESHOOTING CHART Symptoms Associated Green Amber LED Code2 LED Code LED Code •Furnace does not operate, four Red •None flashes on control board •Furnace does not operate, five Red •None flashes on control board •Furnace does not operate, six Red flashes •None on control board •Furnace does not operate, seven Red •None flashes on control board •Furnace does not operate, eight Red •None flashes on control board Red LED Code Fault Description Check Cautions •Temperature rise, duct static, •Confi
PAGE 57
WIRING DIAGRAM GN GRD YL OR PU GY OR C HIGH FIRE PRESSURE SWITCH C NO NO L WH DISCONNECT HI 3 RD WH TO 115VAC/ 1Ø /60 HZ POWER SUPPLY WITH OVERCURRENT PROTECTION DEVICE GND L N WARNING: DISCONNECT POWER BEFORE SERVICING. WIRING TO UNIT MUST BE PROPERLY POLARIZED AND DISCONNECT GROUNDED.
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SPECIAL INSTRUCTIONS FOR PRODUCTS INSTALLED IN THE STATE OF MASSACHUSETTS For all side wall horizontally vented gas fueled equipment installed in every dwelling, building or structure used in whole or in part for residential purposes, including those owned or operated by the Commonwealth and where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of the venting, including but not limited to decks and porches, the following requirements shall be satisfied: V
PAGE 60
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