Fedders F80A manual

Installation, Oper ation and M ainte nance MODEL F80A CA TEGOR Y I N A TURAL GAS AND LP GAS MID EFFICIENCY W ARM AIR FURN A CE Please read the operating instructions and safety precautions carefully and thoroughly before installing and operating your furnace. Keep this manual in a safe place for future reference. 23-23-0427N-006 INTRODUCTION . . . [...]

1 MODEL F80A I NTRODUCTION This gas fired midefficiency (non-condensing) furnace is an u p flow , counterflow or horizontal flow warm air furnace suitable for residential and light commercial heating applications from 35,000 to 135,000 BTU/Hr . T his appliance is a CGA / AGA design certified as a Category I chimney vent central forced air furnace w[...]

2 W ARM AIR FURN A CE DANGER WHA T 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 • IMMEDIA TEL Y CALL YOUR GAS SUPPLIER FROM A N EIGHBOR’S PHONE, OR A CELLULAR PHONE FROM A LOCA TION WELL AWA Y FROM THE BUILDING. FOLLOW THE GAS SUPPLIER’S INSTRUCTION[...]

3 MODEL F80A F URNACE SIZING The maximum hourly heat loss for each heated space shall b e calculated in accordance with the procedures described in Manual J titled, "Load Calculation" published by the Air Conditioning Contractors of America, or by any other method which is suitable for local conditions, provided the r esults obtained are [...]

4 W ARM AIR FURN A CE U PFLOW INST ALLA TION This furnace comes assembled for installation in the upflow p osition and ready for vertical venting. In the event that the furnace will be installed in another position, the following guidelines should be followed. COUNTERFLOW INST ALLA TION SUGGESTED METHOD FOR SUSPENDING HORIZONT AL FURNACE ALLOW ENOU[...]

5 MODEL F80A DIMENSIONS (Inche MODEL WI DT H DEPTH HEIGHT SU PP L Y A 35-2 14-1/2 2 9 3 5 13-1/2 x 19 50-3 14-1/2 2 9 3 5 13-1/2 x 19 70-3 1 6 2 9 35 15 x 19 70-4 17-1/2 2 9 3 5 16-1/2 x 19 85-3 17-1/2 2 9 3 5 16-1/2 x 19 85-4 4 1 00- 20-1/2 2 9 3 5 19-1/2 x 19 100-5 20-1/2 2 9 3 5 19-1/2 x 19 1 15-5 2 2 2 9 3 5 21 x 19 MO DEL RETURN S 35-2 14 x 22[...]

6 W ARM AIR FURN A CE D UCTWORK STEPS: 1 . Position the furnace to minimize ductwork length and fittings. 2 . Cut open a return air inlet. The choices are: a) either side b) furnace bottom c ) any combination, i.e. two sides or a side and the bottom. Note: 2 return openings required for 70-4, 100-5, 115-5 and 135-5. D UCTW ORK Proper airflow is req[...]

7 MODEL F80A D ANGER READ, UNDERST AND AND FOLLOW ALL INSTRUCTIONS IN THIS SECTION. F AILURE TO PROPERL Y VENT OR S UPPL Y COMBUSTION AIR TO THIS FURNACE CAN CAUSE CARBON MONOXIDE POISONING, OR AN EXPLOSION OR FIRE, RESUL TING IN PROPER TY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE. WARNING DO NOT ALLOW GAS PIPING TO BE ROUTED THROUGH JOIST SP ACES TH[...]

8 W ARM AIR FURN A CE WARNING SELECT APPROPRIA TE VENTING MA TERIALS AND ENSURE PROPER CLEARANCES TO COMBUSTIBLES. INADEQUA TE VENTING OR F AILURE TO MAINT AIN PROPER CLEARANCES TO COMBUSTIBLES MA Y ALLOW THE ACCUMULA TION OF THE PRODUCTS OF COMBUSTION WITHIN THE BUILDING RESUL TING IN FIRE, NAUSEA, OR ASPHYXIA TION. DO NOT USE AN UNLINED MASONRY C[...]

9 MODEL F80A I MPORT ANT : THIS FURNACE IS NOT TO BE VENTED IN THE S AME CHIMNEY OR VENTING SYSTEM SERVING A SOLID F UEL APPLIANCE (WOOD OR COAL). IF THE FURNACE IS TO BE VENTED INTO A CHIMNEY THA T NO LONGER SERVES A FIREPLACE, THE FIREPLACE OPENING IS TO BE PERMANENTL Y SEALED. The furnace must connect to a listed chimney (B-1 V ent), or vent com[...]

10 W ARM AIR FURN A CE V ENT CONNECTOR The furnace may be vented with a listed single wall or T ype B double wall vent connector to a B-Vent or lined masonry chimney . Most United States jurisdictions require a minimum 28-gauge galvanized single wall vent connector . Most Canadian jurisdictions require the vent connector to have corrosion resistanc[...]

11 MODEL F80A V ENT TERMINA TION T erminate all vertical vents with a listed vent cap or roof a ssembly unless local codes require otherwise. Locate the termination in an area free of positive pressure or wind eddies. Eddies may occur when wind swirls over roof peaks. They can cause downdrafts and interfere with normal vent operation. Some manufact[...]

12 W ARM AIR FURN A CE WARNING T HIS FURNACE IS F ACTORY EQUIPPED TO BURN NA TURAL G AS ONL Y . CONVERSION TO L.P . GAS REQUIRES SPECIAL KIT No. 30482. F AILURE TO USE THE PROPER CONVERSION KIT CAN CAUSE FIRE, EXPLOSION, CARBON MONOXIDE POISONING, PROPERTY DAMAGE, PERSONAL INJUR Y OR L OSS OF LIFE. CAUTION CONVERSION OF THIS FURNACE REQUIRES SPECIA[...]

13 MODEL F80A CONVER SIONS HIGH AL TITUDE In the United States, the modifications for high altitude are based on a 4 percent reduction of input capacity for every 1000 feet above sea level. T able 4 on page 14 illustrates the impact of altitude for selected elevations. Ratings shown apply to the highest elevation in range. Consult with local fuel s[...]

14 W ARM AIR FURN A CE T ABLE 3: HIGH AL TITUDE SPECIFICA TIONS - CANADA MODEL Input x 1000 AL TITUDE Feet INPUT BTU/hr OUT PUT BTU/hr NA T . ORIFICE L.P . ORIFICE QTY . QTY . 2 3 4 5 6 7 8 0- 20 00 35,000 28,000 1 . 9 5 m m 1 . 2 0 m m 35 200 0 - 450 0 31,500 25,200 1 . 9 0 m m 1. 1 5 m m 0- 20 00 50,000 40,000 1 . 9 5 m m 1 . 2 0 m m 50 200 0 - 4[...]

15 MODEL F80A S ETTING THE MANIFOLD (Outlet) GAS PRESSURE (F92-1003 36G V alve Pressure Check Kit) 1. Shut off the gas upstream of valve and move valve switch to “OFF”. 2. Using the 3/32 inch hex wrench that is included in the v alve pressure check kit, rotate outlet pressure tap s crew one revolution counter-clockwise. 3 . Attach the 5/16 inch[...]

16 W ARM AIR FURN A CE THERMOST A T LOCA TION The thermostat should be located approximately 5 feet above the floor , on an inside wall where there is good natural air circulation, and where the thermostat will be exposed to average room temperatures. Avoid locations where the thermostat will be exposed to cold drafts, heat from nearby lamps or app[...]

17 MODEL F80A S T ART UP PR OCEDURES This furnace is equipped with a hot surface ignition (HSI) device. E ach time that the room thermostat calls for heat, the HSI lights the main burners directly . See the lighting instructions on the furnace. TO ST ART THE FURNACE: 1. Remove the burner compartment access door . 2 . Shut off the electrical power t[...]

18 W ARM AIR FURN A CE Figure 10: Piggyback Connector Remove blue wire from HEA T terminal, tape it off, and replace it with a jumper . Connect the black wire and jumper to COOL. C HECKING FURNACE INPUT • The natural gas supply pressure should be a maximum of 7 inches w .c. and minimum of 5 inches w .c. • The burner manifold pressure is normall[...]

19 MODEL F80A ADJUSTING BLOWER SPEEDS If the blower speeds require adjusting, follow these steps: 1. Remove the blower compartment door . 2. Access the motor electrical wiring. The blower speed is changed at the integrated furnace control. Remove the wire from the "HEA T" terminal of the 50A55-250 integrated furnace control and plug in th[...]

20 W ARM AIR FURN A CE WARNING D ISCONNECT THE ELECTRICAL POWER SUPPL Y TO THE FURNACE BEFORE A TTEMPTING ANY MAINTENANCE. F AILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK RESUL TING IN PERSONAL INJUR Y OR LOSS OF LIFE. CAUTION Do not operate the furnace without an air filter . WARNING HOLES IN THE EXHAUST PIPING OR FURNACE HEA T EXCHANGER CAN ALLOW TO[...]

21 MODEL F80A I NDUCED BLOWER The induced blower motor should be inspected and cleaned i f necessary . Clear any dust buildup from the ventilation ports. CIRCULA TING F AN The condition of the circulating fan should be checked to ensure that it is free of excessive dust buildup, debris, etc. The mechanical fasteners should be inspected and checked [...]

22 W ARM AIR FURN A CE TROUBLESHOOTING SEQUENCE OF OPERA TION: WHITE RODGERS INTEGRA TED FURNACE CONTROL WITH WHITE RODGERS 36G22 GAS VA LV E APPL Y POWER TO APPLIANCE T HERMOST A T CALLS FOR HEA T A IR PROVING SWITCH PROVED OPEN? C OMBUSTION AIR BLOWER ON AIR PROVING SWITCH PROVED CLOSED PREPURGE HOT SURF ACE IGNITER ON FOR W ARM-UP TIME MAIN V AL[...]

23 MODEL F80A 5 0V51-250[...]

24 W ARM AIR FURN A CE T ABLE 1 1: GENERAL TROUBLESHOOTING WHITE-RODGERS INTEGRA TED FAN CONTROL IF A N D CHECK or REP AIR Induced b l o w e r does not energize 2 Fl a sh code does not co me o n 1. Induced b lower wiring. 2. Induced blowe r. Induced b l o w e r does not energize 2 Fl a s h code does come on 1 . Pressure switch stuck closed. 2 . Pre[...]

25 MODEL F80A R R 3 FACTORY SETTING[...]

U ser’ s Inf ormation Man ual MODEL F80A SERIES GAS-FIRED W ARM AIR FURN A CE FURNACE COMPONENTS . . . . . . . . . . . . . . . . . .1 REGULA TOR VENT . . . . . . . . . . . . . . . . . . . . . . .1 GENERAL SAFETY RULES . . . . . . . . . . . . . . . . . .1 FURNACE OPERA TION INFORMA TION TO ST ART THE FURNACE . . . . . . . . . . . . . .2 FURNACE SH[...]

1 MODEL F80A F URNACE COMPONENTS Figure 1 (below) is provided to help identify the c omponents of your furnace. REGULA T OR VENT Most natural gas systems and all LP gas systems have a service regulator located near the point where the gas piping enters the building. The propane tank will normally have an additional first stage regulator located at [...]

2 W ARM AIR FURN A CE WARNING IMPROPER INST ALLA TION, ADJUSTMENT , AL TERA TION, SERVICE OR MAINTENANCE CAN CAUSE PROPER TY DAMAGE, PERSONAL INJURY OR DEA TH FOR ASSIST ANCE OR ADDITIONAL INFORMA TION, CONSUL T A QUALIFIED INST ALLER, SERVICE AGENCY , OR YOUR GAS SUPPLIER. WARNING DEVICES A TT ACHED TO EITHER THE VENT OR COMBUSTION AIR INT AKE FOR[...]

3 MODEL F80A M AINTENANCE AIR FIL TER LUBRICA TION Minimal lubrication is required for your furnace. The induced blower assembly motors have sealed bearings. The bearings contain permanent special purpose lubricants. Attempting to force common oil into the induced blower motor bearings will deteriorate the original lubricant and shorten bearing lif[...]

4 W ARM AIR FURN A CE S EQUENCE OF OPERA TION 1. Thermostat, responding to cool room, calls for heat. 2. Combustion air blower begins. 3. After 15 second prepurge, hot surface igniter warms up. 4. After approximately 5 seconds, the gas valve will open, and the burners ignite. 5. Thirty seconds after the burners ignite and flame sense is proven, the[...]

5 The information in this manual supersedes and replaces the previous instruction/operation manual with regards to Warm Air Furnace products. Illustrations cover the general appearance of the units at the time of publication and the manufacturer reserves the right to make changes in design and construction at any time without notice. For replacemen[...]