INSTALLATION INSTRUCTIONS FOR *MVM97 & *CVM97 MODULATING GAS FURNACE (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. Inst al l er : Af f i x al l manual s adj acent t o t he uni t . As a professional installer you have an obligation to know the product better than the customer. This includes all safety precautions and related items.
TABLE OF CONTENTS UPFLOW MODEL INSTALLED VERTICALLY ....................... 24 DRAIN EXITING RIGHT SIDE ................................. 24 DRAIN EXITING LEFT SIDE .................................. 24 UPFLOW MODEL INSTALLED HORIZONTALLY WITH RIGHT SIDE DOWN ................................. 25 UPFLOW MODEL INSTALLED HORIZONTALLY WITH LEFT SIDE DOWN .................................. 25 UPFLOW MODEL INSTALLED HORIZONTALLY WITH LEFT SIDE DOWN - ALTERNATE .....................
TABLE OF CONTENTS FLAME SENSOR ............................................. 53 TROUBLESHOOTING ......................................... 53 ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS .............. 53 DIAGNOSTIC CHART ........................................ 53 RESETTING FROM LOCKOUT ................................. 53 MAINTENANCE .............................................. 54 ANNUAL INSPECTION ........................................ 54 FILTERS ...................................................
SAFETY CONSIDERATIONS WARNING Adhere to the following warnings and cautions when installing, adjusting, altering, servicing, or operating the furnace. To ensure proper installation and operation, thoroughly read this manual for specifics pertaining to the installation and application of this product. This furnace is manufactured for use with natural gas. It may be field converted to operate on L.P. gas by using the appropriate L.P.
RISQUE D'EM POISONNEM ENT AU M ONOXYDE DE CARBONE Advertencia especial para la inst alación de calentadores ó m anejadoras de aire en áreas cerradas como estacionam ientos ó cuartos de servicio. Las em isiones de monóxido de carbono pueden circular a t ravés del aparat o cuando se opera en cualquier m odo. CO can cause serious illness including permanent brain damage or death.
3. Service integrated control module or connecting wiring following the discharge process in step 2. Use caution not to recharge your body with static electricity; (i.e., do not move or shuffle your feet, do not touch ungrounded 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.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 Gas Valve Gas Line Entrance (Alternate) Pressure Switch(es) Gas Manifold Combustion Air Intake Connection Hot Surface Igniter Rollout Limit Burners Flame Sensor Flue Sensor Flue Pipe Primary Limit Gas Line Entrance Flue Pipe Connection (Alternate) NK Rubber Elbow Variable-Speed Induced Draft Blower Electrical Connection Inlets (Alternate) Coil Front Cover Pressure Tap Coil Font Cover Drain Port Drian Line Penetrations Dr
NOTE: The Commonwealth of Massachusetts requires that the following additional requirements must also be met: • Gas furnaces must be installed by a licensed plumber or gas fitter. • 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.
problems.
Installations must adhere to the clearances to combustible materials to which this furnace has been design certified. The minimum clearance information for this furnace is provided on the unit’s clearance label. These clearances must be permanently maintained. Clearances must also accommodate an installation’s gas, electrical, and drain trap and drain line connections.
out of the house (clothes dryers, exhaust fans, fireplaces, etc.) increase the problem by starving appliances of air. House depressurization can cause back drafting or improper combustion of gas-fired appliances, thereby exposing building occupants to gas combustion products that could include carbon monoxide. When the furnace is installed as a direct vent (2-pipe system) furnace, no special provisions for air for combustion are required.
(2) Combining spaces in different stories. The volumes of spaces in different stories shall be considered as communicating spaces where such spaces are connected by one or more openings in doors or floors having a total minimum free area of 2 in.2/1000 Btu/hr (4400 mm2/kW) of total input rating of all appliances. 9.3.3 Outdoor Combustion Air. Outdoor combustion air shall be provided through opening(s) to the outdoors in accordance with the methods in 9.3.3.1 or 9.3.3.2.
9.3.7.1 Louvers and Grilles. The required size of openings for combustion, ventilation, and dilution air shall be based on the net free area of each opening. Where the free area through a design of louver or grille or screen is known, it shall be used in calculating the size opening required to provide the free area specified.
INSTALLATION POSITIONS HORIZONTAL APPLICATIONS & CONSIDERATIONS *MVM97 models may be installed upflow or horizontally with left or right side down. *CVM97 models may be installed downflow or horizontally with left or right side down. When installing a furnace horizontally, additional consideration must be given to the following: Do not install this furnace on its back. For upright upf low furnaces, return air ductwork may be attached to the side panel(s) and/or basepan.
LEVELING VENT / FLUE PIPE & COMBUSTION AIR PIPE Leveling ensures proper condensate drainage from the heat exchanger. For proper flue pipe drainage, the furnace must be level lengthwise from end to end. The furnace should have a slight tilt from back to front with the access doors downhill from the back panel approximately 1/2 to 3/4 inches. The slight tilt allows the heat exchanger condensate, generated in the recuperator coil, to flow forward to the recuperator coil front cover.
DUAL CERTIFICATION: NON-DIRECT/ DIRECT VENT This furnace is dual certified and may be installed as a non-direct vent (single pipe) or direct vent (dual pipe) appliance. A nondirect vent installation requires only a vent/flue pipe, while a direct vent installation requires both a vent/flue pipe and a combustion air intake pipe. Refer to the appropriate section for details concerning piping size, length, number of elbows, furnace connections, and terminations.
• NO TRANSITION ON HORIZONTAL PLANE, THIS CREATES A WATER TRAP AND RESTRICTS FLUE GASES The combustion air intake termination of a direct vent application should not terminate in an area which is frequently dusty or dirty. In Canada, the current edition of CAN/CSA B149.115 takes precedence over the preceding termination restriction.
V X v DIRECT VENT TERMINAL CLEARANCES 1 Canadian Installations U.S. Installations Canadian Installations 2 A= Clearance above grade, veranda, porch, deck or balcony. (See 1.24.6-i(9)b.) 12 in. (30 cm) 12 in. (30 cm) B= Clearance to window or door that may be opened. 6 in. (15 cm) for appliances 10,000 Btuh (3 kW), 12 in. (30 cm) for appliances > 10,000 Btuh (3 kW) and 100,000 Btuh (30 kW), 36 in. (91 cm) for appliances > 100,000 Btuh (30 kW). 6 in.
STANDARD FURNACE CONNECTIONS It is the responsibility of the installer to ensure that the piping connections to the furnace are secure, airtight, and adequately supported. VENT PIPE CONNECTION The vent pipe outlet is sized to accept 2” pipe. Secure vent/flue pipe directly into the furnace fitting with the appropriate glue. Alternately, a small section of 2" pipe may be glued in the furnace socket and a rubber coupling installed to allow removal for future service.
Insert flange. Cut 2 ½” long. RF000142 Vent/Flue Pipe Cuts Figure 11 1. 2. 3. 4. Remove screws from vent flange. Remove internal elbow and vent pipe. Cut pipe 2 1/2” from flange. Remove cabinet plug adjacent to inducer outlet and install an original cabinet vent hole. 5. Install RF000142 coupling on inducer outlet. 6. Install flanged vent section removed in step 2 & secure with clamps. 7. Secure flange to cabinet using screws removed in step 1.
5) Increased Clearance Configurations using (2) 45 deg. elbows should be considered equivalent to one 90 deg. elbow. ALTERNATE COMBUSTION AIR PROVISION (Upf l ow / Hor i zont al model s onl y) When using the alternate venting location, either in a horizontal left side down installation or a vertical installation using down – venting, an alternate combustion air opening can used. A locating dimple is located on the right side of the furnace cabinet.
12" MIN. VENT/FLUE TEE (OPTIONAL) or 45° ELBOW TURNED DOWN or 90° ELBOW TURNED DOWN 90° ELBOWS 3” - 24” 12" MIN. ABOVE HIGHEST ANTICIPATED SNOW LEVEL Horizontal Termination (Single Pipe) 12" MIN. ABOVE HIGHEST ANTICIPATED SNOW LEVEL Above Highest Anticipated Snow Level Figure 15 Alternate Horizontal Vent Termination (Dual Pipe) VENT/ FLUE & COMBUSTION AIR PIPE LENGTHS & DIAMETERS Figure 17 If there is a difference between the vent and combustion air pipes, count the pipe with the most fittings.
appropriate drain location in compliance with local and national codes. 3”MIN 24”MAX 12” MIN SEPARATION 3” MIN 12” MIN TO GRADE OR HIGHEST ANTICIPATED SNOW LEVEL Termination of Multiple Direct Vent Furnaces Figure 19 CONCENTRIC VENT TERMINATION Ref er t o t he direct ions provided wit h t he Concent ric Vent Kit (DCVK) f or inst allat ion specif icat ions. SIDE WALL VENT KIT Follow the bullets listed below when installing the drain system.
#2 #1 #3 Hose #1 #5 #4 Hose #2 #8 #7 45 degree barb-pipe adapter #9 #10 Coupling 100 Degree Elbow #11 #6 45 degree barb-pipe adapter Figure 21 NOT E: Dr ai n component s shown f or i nf or mat i on pur poses onl y. UPFLOW MODEL I NSTALLED 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 .
UPFLOW MODEL INSTALLED HORIZONTALLY DOWN WITH RIGHT SIDE Mi ni mum 5 1/ 2" cl ear ance i s r equi r ed f or t he dr ai n t r ap beneat h t he f ur nace. UPFLOW MODEL INSTALLED HORIZONTALLY DOWN WITH LEFT SIDE Mi ni mum 5 1/ 2" cl ear ance i s r equi r ed f or t he dr ai n t r ap beneat h t he f ur nace. *Al so see Front Cover Pressure Swit ch Tube Locat ion on page 14. Hose #11 Hose #2 Figure 24 1. Remove the clamps from both ends of the drain hoses. 2.
8. Locate hose #5 and cut 3” from the non-grommet end. Discard the section without the grommet. 9. Insert the cut end of tube #5 through the lower cabinet drain hole. 10. Connect hose #6 & hose #5 using 100º elbow and secure with two red clamps 11. (Draining the Collector Box) Remove cap from left side collector box drain port (bottom in horizontal left position) and install it on right side (top) collector box drain port. 12.
DRAIN EXITING RIGHT SIDE COUNTERFLOW MODEL I NSTALLED HORIZONTALLY RIGHT SIDE DOWN WITH Mi ni mum 5 1/ 2” cl ear ance i s r equi r ed f or t he dr ai n t r ap beneat h t he f ur nace. NOTE: For horizontal installations, some of the required hoses are found in the factory-installed hose assemblies. Remove the hose clamps to obtain the respective hoses needed for installation, and install per the following directions. Figure 28 1. Remove hose clamps and hoses from trap 2. Remove trap. 3.
COUNTERFLOW MODEL INSTALLED HORIZONTALLY SIDE DOWN WITH LEFT Mi ni mum 5 1/ 2" cl ear ance i s r equi r ed f or t he dr ai n t r ap beneat h t he f ur nace. *Also see Front Cover Pressure Swit ch Tube Locat ion on page 14. Hose #4 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. Connect the 4” straight section of hose #4 to the 100º elbow and the PVC pipe and secure with red clamps. 15.
Use a separate fused branch electrical circuit containing properly sized wire, and fuse or circuit breaker. The fuse or circuit breaker must be sized in accordance with the maximum overcurrent protection specified on the unit rating plate. An electrical disconnect must be provided at the furnace location. Connect hot, neutral, and ground wires as shown in the wiring diagram located on the unit’s blower door.
Cooling’. Refer to the following figures for proper connections to the integrated control module. Low voltage connections can be made through either the right or left side panel. Thermostat wiring entrance holes are located in the blower compartment. The following figure shows connections for a “heat/cool system”.
To install/connect a dehumidistat: 1. Turn OFF power to furnace. 2. Secure the dehumidistat neutral wire (typically the white lead) to the terminal marked “DEHUM” on the furnace integrated control module. 3. Secure the dehumidistat hot wire (typically the black lead) to the terminal marked “R” on the furnace integrated control module. 4. Secure the dehumidistat ground wire (typically the green lead) to the ground screw on the furnace junction box. NOTE: Ground wire may not be present on all dehumidistats.
GAS VALVE CAUTION TO PREVENT UNRELIABLE OPERATION OR EQUIPM ENT DAM AGE, THE INLET GAS SUPPLY PRESSURE M UST BE AS SPECIFIED ON THE UNIT RATING PLATE W ITH ALL OTHER HOUSEHOLD GAS FIRED APPLIANCES OPERATING. Inlet gas supply pressures must be maintained within the ranges specified in the following 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 following stipulations apply when connecting gas piping. Refer to Gas Piping Connect ions figure for typical gas line connections to the furnace. • Gas piping must be supported external to the furnace • • cabinet so that the weight of the gas line does not distort the burner rack, manifold or gas valve. Use black iron or steel pipe and fittings for building piping. Where possible, use new pipe that is properly chamfered, reamed, and free of burrs and chips.
Gas Piping Connections Alternate Gas Line Location Manifold Burners Gas Valve Manual Shut Off Valve (upstream from ground joint pipe union) Manual Shut Off Valve (upstream from ground joint pipe union) *Ground Joint Pipe Union *Ground Joint Pipe Union Drip Leg Grommet in Standard Gas Line Hole *NOTE: Uni on may be i nsi de f ur nace cabi net wher e all owed by l ocal codes. UPFLOW When gas l i ne i s i n t he al t er nat e l ocat i on, swap t he posi t i on of t he pl ug and gr ommet .
WARNING EDGES OF SHEET M ETAL HOLES M AY BE SHARP. USE GLOVES AS A PRECAUTION W HEN REM OVING HOLE PLUGS. The gas piping may enter the left or right side of the furnace cabinet. The installer must supply rigid pipe long enough to reach the outside of the cabinet to seal the grommet cabinet penetration. A semi-rigid connector to the gas piping can be used outside the cabinet per local codes. 1/2” NPT pipe and fittings are required. For models with an “L” shaped manifold, a 4 1/2” long nipple is required.
CIRCULAT ING AIR & FILT ERS Example: DUCT static reading from return duct = -0.1" W.C. WORK - AIR FLOW 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.
WARNING EDGES OF SHEET M ETAL HOLES M AY BE SHARP. USE GLOVES AS A PRECAUTION W HEN REM OVING SHEET M ETAL FROM RETURN AIR OPENINGS. CUT USING TIN SNIPS PRESS OUT BY HAND CUT FOUR CORNERS AFTER REMOVING SHEET METAL SCRIBE LINES OUTLINING DUCT FLANGES Consider installing an air cleaner with deep-pleated media filter at the time of furnace installation.
Air Air cleaner inst allat ion locat ion M axim um Heat ing Airflow Filt er (M edia) Dim ensions Part Num ber Cleaner Fam ily Si d e o r b o t t o m re t u rn 1200 CFM 16 i n X 20 i n x 5¼" AM 11-1620-5 Si d e o r b o t t o m re t u rn 1600 CFM 16 i n X 25 i n x 5¼" AM 11-1625-5 Si d e o r b o t t o m re t u rn 1600 CFM 20 i n X 20 i n x 5¼" AM 11-2020-5 Si d e o r b o t t o m re t u rn 2000 CFM 20 i n X 25 i n x 5¼" AM 11-2025-5 2 X 1600 CFM 2, 16 i n X 25 i n x 5¼" AM 11-3225-5 Si
• FILTER ACCESS DOOR FI ER LT FI LT E R • RETURN DUCT CENTRAL RETURN GRILLE FILTER SUPPORT BRACKET • After 10 total minutes, the furnace control board increases the firing rate to 78% at a rate of 1% per second. After 20 total minutes, the furnace control board increases to 100% at a rate of 1% per second for the remainder of the call for heat. The circulator fan is adjusted to the appropriate CFM, corresponding to the current firing rate. (Field Supplied) IGNITION (80%) 70% 10 MINS. 60% 8 MINS.
Call for 2nd-Stage Heat - Thermostat contacts close R to W1 and W2. Af t er a successf ul Li ght Of f Sequence and expi r at i on of t he Igni t i on St abi l i zat i on Per i od: • • • • The furnace control board adjusts to the low firing rate of 35%. After 2 minutes, the furnace control board increases the firing rate to 80%. Thereafter, the IFC will increase the firing rate by 10%, at a rate of 1% per second, every 10 minutes for the remainder of the call for heat.
approved method. Verify that all required kits (propane gas, etc.) have been appropriately installed. FURNACE STARTUP 1. Close the manual gas shutoff valve external to the furnace. 2. Turn off the electrical power to the furnace. 3. Set the room thermostat to the lowest possible setting. 4. Remove the burner compartment door. supply pressure can be measured at the gas valve inlet pressure tap or at a hose fitting installed in the gas piping drip leg.
NOTE: If measuring gas pressure at the drip leg or Honeywell VR9205R gas valve, a field-supplied hose barb fitting must be installed prior to making the hose connection. 3. Turn ON the gas supply, check for leaks and operate the furnace and all other gas consuming appliances on the same gas supply line. NOT E: To bring furnace up to High Fire, see instructions for field test mode in GAS MANIFOLD PRESSURE MEASUREMENT sect ion. 4. Measure furnace gas supply pressure with burners firing.
Manifold Gas Pressure Gas Range Nom inal Natural High Stage 3.2 - 3.8" w .c. 3.5" w .c. Propane High Stage 9.5 - 10.5" w .c. 10.0" w .c. GAS INPUT RATE MEASUREMENT (NATURAL GAS ONLY) The actual gas input rate to the furnace must never be greater than that specified on the unit rating plate. To measure natural gas input using the gas meter, use the following procedure. 1. Turn OFF the gas supply to all other gas-burning appliances except the furnace. 2.
CIRCULATOR BLOWER SPEEDS Low Model Tap St age Cool WARNING TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, TURN OFF POW ER TO THE FURNACE BEFORE CHANGING SPEED TAPS. This furnace is equipped with an ECM circulator blower. The heating blower speed is shipped set at “B”, and the cooling blower speed setting is “D”. These blower speeds should be adjusted by the installer to match the installation requirements so as to provide the correct heating temperature rise and correct cooling CFM.
• Profile A provides only an OFF delay of one (1) minute at 100% of the cooling demand airflow. 100% CFM 100% CFM OFF OFF BLOWER HEAT OFF DELAY TIMINGS 1 min Figure 53A • Profile B ramps up to full cooling demand airflow by first stepping up to 50% of the full demand for 30 seconds. The motor then ramps to 100% of the required airflow. A one (1) minute OFF delay at 100% of the cooling airflow is provided.
Two-way digital communications is accomplished using only two wires. The thermostat and subsystem controls are powered with 24 VAC. Thus, a maximum of 4 wires between the equipment and thermostat is all that is required to operate the system. AIRFLOW CONSIDERATIONS Airflow demands are managed differently in a communi- cating system than they are in a non-communicating wired system. The system operating mode (as determined by the thermostat) determines which unit calculates the system airflow demand.
TWO-WIRE OUTDOOR, FOUR-WIRE INDOOR WIRING As few as two wires can be utilized between the indoor and outdoor units. For this wiring scheme, only the data lines, 1 and 2, are needed between the indoor and outdoor units. A 40VA, 208/230 VAC to 24VAC transformer must be installed in the outdoor unit to provide 24VAC power to the outdoor unit’s electronic control. The transformer is included in selected communicating thermostat kits. See kit instructions for mounting and wiring instructions.
--------- C D A B C Tap Cooling Ramping --- ----- 2 Stage Stat** 1-Stage Not applicable Pull Down Pull Up Bias Dehum Compressor ------------- Disabled Enabled Disabled Enabled Disabled Enabled --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ON OFF ON OFF --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- ON
1 2 R C 1 2 R C CTKO* 1 & 2 1 2 R C Comf ort Net Compatible Furnace 1 2 ComfortNet Compatible R C Furnace Integrated Control Module 1 2 R C Integrat ed Cont rol Module 40VA Transformer (included in CTK01 kit) Comf ort Net Compatible AC/ HP 1 2 R C CTK0* Thermostat Thermost at Integrat ed Cont rol Module 208/230 VAC ComfortNet Compatible AC/HP Integrated Control Module 24 VAC System Wiring using Four-Wires System Wiring using Two-Wires between Furnace and AC/HP and Four-Wires b
LED LED Status Indication Possible Causes Cor r ective Action(s) Notes & Cautions Off • Normal condition • None • None • None 2 Flashes • Out-of-box reset • Control power up • None • None • None • None • Check communications • Turn power OFF prior to Red Communications LED • Learn button depressed Rapid Flashing • Normal network traffic • Control is “talking” on network as expected On Solid • Data 1/ Data 2 misswire Gr een Receive LED • Data 1 and data 2 wires reversed at furnace,
• Circulator blower is energized on heat speed following a • Furnace circulator blower and outdoor cooling unit run their thirty (30) second blower on delay. The circulator blower CFM will increase or decrease with gas valve modulation. Electronic air cleaner terminal is energized with circulator blower. Furnace is now operating on the specified stage called for by the thermostat. Furnace runs, integrated control module monitors safety circuits continuously.
FURNACE CONTROL BOARD • R and G thermostat contacts open, completing the call for The furnace control board is an electronic device which, if a potential safety concern is detected, will take the necessary precautions and provide diagnostic information through an LED display. • • PRIMARY LIMIT fan. Circulator blower is de-energized. Electronic air cleaner terminal is de-energized. Furnace awaits next call from thermostat.
ROLLOUT LIMIT DIAGNOSTIC CHART The rollout limit controls are mounted on the burner/manifold assembly and monitor the burner flame. They are normallyclosed (electrically), manual-reset sensors. These limits guard against burner flames not being properly drawn into the heat exchanger. WARNING HIGH VOLTAGE ! TO AVOID PERSONAL INJURY OR DEATH DUE TO ELECTRICAL SHOCK, DISCONNECT ELECTRICAL POW ER PRESSURE SWITCHES BEFORE PERFORM ING ANY SERVICE OR M AINTENANCE.
FILTER REMOVAL MAINTENANCE Depending on the installation, differing filter arrangements can be applied. Filters can be installed in either the central return register or a side panel external filter rack (upflow only). A media air filter or electronic air cleaner can be used as an alternate filter. Follow the filter sizes given in the Recommended Minimum Filter size table to ensure proper unit performance.
FLAME SENSOR (QUALIFIED SERVICER ONLY) REPAIR AND REPLACEMENT PARTS 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 emery cloth or steel wool.
E2 E3 • Circulator blower runs continuously. No furnace operation. • Integrated control module LED display provides E3 error code. • ComfortNet thermostat “Call for Service” icon illuminated. • ComfortNet thermostat scrolls “Check Furnace” message. E1 • Normal operation On E0 • Primary limit. • Low stage pressure switch circuit is not closed. • Low stage pressure switch circuit is closed at start of heating cycle.
E6 E7 • F urnace fails to o perate. • Integrated co ntro l m o dule LED display pro vides E 7 erro r co de. • Co mfo rtNet therm o stat " Call fo r Service" ico n illum inated. • Co mfo rtNet therm o stat sco lls " Check F urnace" m essage. EF • No furnace o peratio n. • Integrated co ntro l m o dule LED display pro vides Ef erro r co de. • No rmal furnace o peratio n. • Integrated co ntro l m o dule LED display pro vides E 6 erro r co de. Ed • No furnace o peratio n.
d4 • Operation different than expected or no operation. • Integrated control module LED display provides d4 error code. • ComfortNet thermostat “Call for Service” icon illuminated. • ComfortNet thermostat scrolls “Check Furnace” message. EA • Furnace fails to operate. • Integrated control module LED display provides EA error code. • ComfortNet thermostat “Call for Service” icon illuminated. • ComfortNet thermostat scrolls “Check Furnace” message.
b4 • Furnace fails to operate. • Integrated control module LED display provides b4 error code. • ComfortNet thermostat “Call for Service” icon illuminated. • ComfortNet thermostat scrolls “Check Furnace” message. b2 • Furnace fails to operate. • Integrated control module LE display provides b2 error code. • ComfortNet thermostat “Call for Service” icon illuminated. • ComfortNet thermostat scrolls “Check Furnace” message. b3 b1 • Furnace fails to operate.
b7 • Furnace fails to operate. • Integrated control module LED display provides b7 error code. • ComfortNet thermostat “Call for Service” icon illuminated. • ComfortNet thermostat scrolls “Check Furnace” message. b9 b6 • Furnace fails to operate. • Integrated control module LED display provides b6 error code. • ComfortNet thermostat “Call for Service” icon illuminated. • ComfortNet thermostat scrolls “Check Furnace” message. • Furnace operates at reduced performance.
STAT US CODES NO POWER On A b0 b1 b2 b3 b4 b5 b6 b7 b9 C C1 C2 d d0 d1 d2 d4 dF E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EC Ed EF F Ft H HI IF P P1 P2 50 12 NORMAL OPERATION INDICATES AIRFLOW, FOLLOWED BY CFM BLOWER MOTOR NOT RUNNING BLOWER COMMUNICATION ERROR BLOWER HP MIS-MATCH BLOWER MOTOR OPERATING IN POWER, TEMPERATURE, OR SPEED LIMIT BLOWER MOTOR CURRENT TRIP OR LOST ROTOR BLOWER MOTOR LOCKED ROTOR BLOWER OVER/UNDER VOLTAGE TRIP OR OVER TEMPERATURE TRIP INCOMPLETE PARAMETERS SENT TO MOTOR LOW INDOOR AIRFLOW
WIRING DIAGRAM *MVM97_A*, *CVM97_A* GND GR ID BLOWER MODULATING PRESSURE SWITCH ASSEMBLY GND HIGH FIRE PRESSURE SWITCH OR LOW FIRE PRESSURE C C NO SWITCH L BK N WH DISCONNECT BR 2 1 NO YL 2 CIRCUIT CONNECTOR JUNCTION BOX HOT SURFACE IGNITER RD GND L WH PM 2 FLAME SENSOR C GY 1 N WARNING: BR (HONEY WELL) C WARNING:DISCONNECT POWER BEFORE SERVICING WIRING. TO UNIT MUST BE PROPERLY POLARIZED AND GROUNDED.
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
CUSTOM ER FEEDBACK We are very interested in all product comments. Please fill out t he feedback on one of t he following links: Goodman® Brand Product s: (ht t p:/ / w w w.goodmanmfg.com / about / cont act-us). Amana® Brand Products: (ht t p:/ / w w w.amana-hac.com/ about-us/ cont act-us). You can also scan t he QR code on t he right for t he product brand GOODM AN®BRAND AM ANA®BRAND GOODM AN®BRAND AM ANA®BRAND you purchased t o be direced t o t he feedback page.
