Manuale d’uso / di manutenzione del prodotto SL280DFV del fabbricante Lennox International Inc.
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Page 1 06/1 1 *2P0611* 506710−01 *P506710-01* 201 1 Lennox Industries Inc. Dallas, T exas, USA DOWNFLOW AIR FLOW CAUTION As with any mechanical equipment, personal injury can result from cont act with sharp sheet met al edges. Be careful when you handle this equipment.
Page 2 Unit Dimensions − inches (mm) GAS PIPING INLET (Either Side) FLUE OUTLET (T op) ELECTRICAL INLET (Either Side) RETURN AIR OPENING FRONT VIEW SIDE VIEW TOP VIEW A B C D 3/4 (19) 27 − 3/4 (77.
Page 3 Part s Arrangement FIGURE 1 BLOWER ASSEMBL Y INTERNAL FLUE PIPE ASSEMBL Y FLUE CHASE GASKET DOOR INTERLOCK SWITCH HEA T EXCHANGER COMBUSTION AIR INDUCER COMBUSTION AIR INDUCER PRESSURE SWITCHES.
Page 4 SL280DFV Gas Furnace The S L280DFV gas furnace is equipped w ith a t wo−stage, variable speed integrated control. the control is compat - ible with: Communicating thermostat s − icomfort T ouch ® . Non−communicating thermostat s − ComfortSense or oth- er conventional thermost ats.
Page 5 chilled air from entering the furnace (see figure 1). If the damper is manually operated, it must be equipped to pre- vent operation of either the heating or the cooling unit, un- less it is in the full HEA T or COOL setting.
Page 6 D The gas cock must be T handle" type. D Whe n a furnace is installed in an attic, the passage- way to and service area surrounding the equipment shall be floored. W ARNING Product cont ains fiberglass wool. Disturbing the insulation in this product during inst allation, maintenance, or rep air will expose you to fiberglass wool.
Page 7 Confined Sp ace A confined space is an area with a volume less than 50 cu- bic feet (1.42 m 3 ) per 1,000 Btu (.29 kW) per hour of the combined input rating of all appliances installed in that space. This definition includes furnace closets or small equipment rooms.
Page 8 EQUIPMENT IN CONFINED SP ACE ALL AIR FROM OUTSIDE (Inlet Air from Crawlspace and Outlet Air to V entilated Attic) NOTE−The inlet and outlet air openings shall each have a free area of at least one square inch (645 mm 2 ) per 4,000 Btu (1.17 kW) per hour of the tot al input rating of all equipment in the enclosure.
Page 9 Downflow Installation Downflow unit installs in three ways: on non−combustible flooring, on combustible flooring using a downflow com- bustible flooring base, or on a reverse−flow cooling cabinet.
Page 10 SL280DFV UNIT COOLING COIL PLENUM FIGURE 8 PROPERL Y SIZED FLOOR OPENING Return Air Opening −− Downflow Unit s The following steps should be taken when inst alling ple- num: 1 − Bottom edge of plenum should be flanged with a hemmed edge (See figure 9).
Page 1 1 FIGURE 12 Front Back Horizont al Downflow Application Allow for clearances to combustible materials as indi- cated on the unit nameplate. Minimum clearances for closet or alcove installations are shown in figure 13.
Page 12 Duct System Use industry-approved standards (such as those pub- lished by Air Conditioning Contractors of America or Ameri- can Society of Heating, Refrigerating and Air Conditioning Engineers) to si z e and inst all the supply and return air duct system.
Page 13 FIGURE 15 Common V enting Using Tile−Lined Interior Masonry Chimney and Combined V ent Connector MINIMUM LENGTH = AS SHORT AS PRACTICAL. FOR MAXIMUM LENGTH SEE NOTE TO LEFT INTERIOR TILE−LINED MASONRY CHIMNEY NOTE − the chimney must be properly sized per provided venting tables or lined with listed metal lining system.
Page 14 Never connect a Category I appliance to a chimney that is servicing a solid−fuel appliance. If a fireplace chimney flue is used to vent this appliance, the fireplace opening must be permanently sealed.
Page 15 18 − The common vent d iameter must a lways be a t least a s large as the largest vent connector diameter . 19 − I n no case, shall the vent connector be sized more than two consecutive table size diameters over the size of the draft hood outlet or flue collar outlet.
Page 16 T ABLE 6 Cap acity of T ype B Double−W all V ents with Single−W all Metal Connectors Serving a Single Category I Appliance Height H (feet) Lateral L (feet) V ent and Connector Diameter −.
Page 17 T ABLE 7 V ent Connector Capacity T ype B Double−W all V ents with T ype B Double−Wall Connectors Serving T wo or More Category I Appliances V ent Height H (feet) Connector Rise R (feet) V.
Page 18 T ABLE 9 V ent Connector Capacity T ype B Double−W all V ents with Single−W all Metal Connectors Serving T wo or More Category I Appliances Height H (feet) Lateral L (feet) V ent and Conne.
Page 19 Removal of the Furnace from Common V ent In the event that an existing furnace is removed from a venting system commonly run with separate gas ap- pliances, the venting system is likely to be too large to properly vent the remaining att ached appliances.
Page 20 T ABLE 1 1 Gas Pipe Cap acity − f t 3 /hr (m 3 /hr) Nominal Iron Pipe Size inches (mm) Internal Diameter inches (mm) Length of Pipe − feet (m) 10 (3.048) 20 (6.096) 30 (9.144) 40 (12.192) 50 (15.240) 60 (18.288) 70 (21.336) 80 (24.384) 90 (27.
Page 21 Leak Check After gas piping is completed, carefully check all piping connections (f ac t ory− and field−installed) for gas leaks. Use a leak detecting solution or other preferred means. NOTE − I f emergency shutoff is necessary , shut off the main manual gas valve and disconnect the main power to the furnace.
Page 22 2 − Holes are on both sides of the furnace cabinet to facili- tate wiring. 3 − Install a sep arate (properly sized) disconnect switch near the furnace so that power can be turned off for servicing. 4 − Before connecting the thermostat or the power wiring, check to make sure the wires will be long enough for servicing at a later date.
Page 23 Generator Use − V olt age Requirement s The following requirements must be kept in mind when specifying a generator for use with this equipment: The furnace requires 120 volts (Range: 10.
Page 24 FIGURE 22 Optional Accessories for use with any icomfort T ouch ® System NOTE: 24V UV LIGHT APPLICA TIONS In an icomfort by Lennox system, neither furnace nor air handler trans- former will have adequate V A to power 24V UV light applications.
Page 25 T ABLE 13 SL280 Field Wiring Applications With Conventional Thermost at Thermost at DIP Switch Settings and On−Board Links (See figure 25) Wiring Connections DIP Switch 1 Thermost at Heating St ages On Board Links Must Be Cut T o Select System Options 1 Heat / 1 Cool NO TE − Us e DIP switch 2 to set second−stage heat ON delay .
Page 26 T ABLE 13 SL280 Field Wiring Applications With Conventional Thermost at (Continued) Thermost at DIP Switch Settings and On−Board Links (See figure 25) Wiring Connections DIP Switch 1 Thermos.
Page 27 T ABLE 13 SL280 Field Wiring Applications With Conventional Thermost at (Continued) Thermost at DIP Switch Settings and On−Board Links (figure 25) Wiring Connections DIP Switch 1 Thermost at.
Page 28 T ABLE 13 SL280 Field Wiring Applications With Conventional Thermost at (Continued) Thermost at DIP Switch Settings and On−Board Links (figure 25) Wiring Connections DIP Switch 1 Thermost at.
Page 29 SL280DFV Schematic Wiring Diagram FIGURE 23.
Page 30 TYPICAL SL280DFV FIELD WIRING DIAGRAM FIGURE 24 FIELD INST ALLED CLASS II 24V FIELD INST ALLED LINE VOL T AGE.
Page 31 Integrated Control FIGURE 25 THERMOST A T CONNECTIONS (TB1) 1/4" QUICK CONNECT TERMINALS RS−BUS LINK (TB82, future use) I+ = DA T A HIGH CONNECTION I − = DA T A LOW CONNECTION RS−BU.
Page 32 Integrated Control DIP Switch Settings − Conventional Thermost at (non−communi- cating) SL280DFV units are equipped with a two−st age, variable speed integrated control. This control manages ignition timing, heating mode fan off delays and indoor blower speeds based on selections made using the control dip switches and jumpers.
Page 33 NOTE − The off portion of the selected ramp profile also ap- plies during heat pump operation in dual fuel applications. T ABLE 17 Cooling Mode Blower Speed Ramping Ramping Option Switch 9 Switch 10 A (Factory) Off Of f B Off On C On Off D On On Ramping Option A (Factory Selection) Motor runs at 50% for 30 seconds.
Page 34 On−Board Links Note: In icomfort t systems with a conventional outdoor unit (non−communicating), the on−board clippable links must be set to properly configure the system W ARNING Carefully review all configuration information pro- vided.
Page 35 BLO WER D A T A SL280DF070V36A BLOWER PERFORMANCE (less lter) 0 through 0.8 in. w .g. (Heating) and 0 through 1.0 in. w .g. (Cooling) External Static Pressure Range HEA TING 1 Heating Speed.
Page 36 BLO WER D A T A SL280DF090V60C BLOWER PERFORMANCE (less lter) 0 through 0.8 in. w .g. (Heating) and 0 through 1.0 in. w .g. (Cooling) External Static Pressure Range HEA TING 1 Heating Speed.
Page 37 T ABLE 20 SL280DFV , Non−Communicating Thermostat with Humidity Control Feature and Single−S peed Out door Unit OPERA TING SEQUENCE SYSTEM DEMAND SYSTEM RESPONSE System Condition S tep The.
Page 38 T ABLE 21 SL280DFV , Non−Communicating Thermostat with Humidity Control Feature and T wo−Speed Out door Unit OPERA TING SEQUENCE SYSTEM DEMAND SYSTEM RESPONSE System Condition S tep Thermo.
Page 39 Unit St art−Up FOR YOUR SAFETY READ BEFORE LIGHTING W ARNING D o not use this furnace if any part has been underwa- ter . Immediately call a licensed professional service technician (o r equivalent) to inspect the furnace and to replace any part of the control system and any gas control which has been under water .
Page 40 12− If the appliance will not operate, follow the instructions T urning Off Gas to Unit" and call your service techni- cian or gas supplier . T urning Off Gas to Unit 1 − Set the thermostat to the lowest setting. 2 − Tur n of f all electrical power to the unit if service is to be performed.
Page 41 High Altitude The manifold pressure, gas orifice and pressure switch may require adjustment or replacement to ensure proper operation at higher altitudes. T ables 24 through 27 shows manifold pressure, pressures switch and gas conversion kits at all altitudes.
Page 42 Other Unit Adjustment s Primary and Secondary Limit s The primary limit is located on the heating compartment vestibule panel. The secondary limits (if equipped) are lo- cated in t h e b l ower comp artment, att ached to the back side of the blower .
Page 43 Applications Using A Single−St age Thermost at See figure 29 for ignition control sequence B − Heating Sequence −− Control Thermost at Selection DIP Switch 1 ON in Single−St age&q.
Page 44 Service W ARNING ELECTRICAL SHOCK, FIRE, OR EXPLOSION HAZARD. Failure to follow safety warnings exactly could result in dangerous operation, serious injury , death or property damage. Improper servicing could result in dangerous opera- tion, serious injury , death, or property damage.
Page 45 SL280DFV BURNER, COMBUSTION AIR INDUCER ASSEMBL Y & HEA T EXCHANGER REMOV AL FIGURE 30 heat exchanger gasket collector box orifice plate internal flue pipe pressure switch combustion air i.
Page 46 12 − T o clean the combustion air inducer visually inspect and using a wire brush clean where necessary . Use com- pressed air to clean off debris and any rust. 13− Reinstall heat exchanger in vestibule. (Replace the five screws in the cabinet from step 10 if removed).
Page 47 Planned Service Th e following items should be checked during an annual inspection. Power to the unit must be shut of f for the service techni- cian’s safety . Fresh air grilles and louvers (on the unit and in the room where the furnace is installed) − Must be open and unob- structed to provide combustion air .
Page 48 Integrated Control Diagnostic Modes Display Action (when button released) No change (idle)* Remain in idle mode Solid E" Enter diagnostic recall mode Solid D" Discharge Air Ins.
Page 49 Integrated Control Diagnostic Codes (continued) Code Diagnostic Codes/S t atus of Equipment Action Required to Clear and Recover E 105 Device communication problem − No other devices on RS BUS (Commu- nication system). Equipment is unable to communicate.
Page 50 Integrated Control Diagnostic Codes (continued) E 131 Corrupted control parameters (V erify configuration of system). Communi- cating only . Reconfigure the system. Replace control if heating or cooling is not available. Only applicable in the communicating mode, not in startup.
Page 51 Integrated Control Diagnostic Codes (continued) Code Diagnostic Codes/S t atus of Equipment Action Required to Clear and Recover E 223 Low pressure switch failed open. Check pressure (inches w .c.) of low pressure switch closing on heat call. Measure operating pressure (inches w .
Page 52 Integrated Control Diagnostic Codes (continued) E 272 Sof t lockout − Exceeded maximum number of recycles. Last recycle due to the pressure switch opening. Check operation of low pressure switch to see if it is stuck closed on heat call. Check pressure (inches w .
Page 53 Integrated Control Diagnostic Codes (continued) Code Diagnostic Codes/S t atus of Equipment Action Required to Clear and Recover E 312 Restricted air flow in cooling or continuous fan mode is lower than cfm setting.
Page 54 Integrated Control Diagnostic Codes (continued) E 406 LSOM − Compressor open st art circuit. Required amount of current is not passing through S t art current transformer . Clears the error after cur- rent is sensed in ST ART sensor , or after power re- set.
Page 55 Program Unit Cap acity/Size Mode Power−Up − Number displayed represents by integrated control unit size code (furnace model and capacity). If three horizont al bars are displayed followed by continuous E203, furnace control does not recognize unit size code.
Page 56 T roubleshooting: Heating Sequence of Operation HIGH LIMIT SWITCH CLOSED? LOW PRESSURE SWITCH OPEN? INDUCER ON PRE − PURGE (15 SECONDS) 1ST ST AGE GAS V AL VE ENERGIZED FLAME SENSED WITHIN 4.
Page 57 T roubleshooting: Heating Sequence of Operation (Continued) WHEN USED WITH A SINGLE ST AGE THERMOSTA T , SET SW1 TO THE ON POSITION IN DIP SWITCH S4. IF THE HIGH FIRE PRESSURE SWITCH DOES NOT CLOSE WITHIN 5 A TTEMPTS, THE SYSTEM WILL OPERA TE A T LOW FIRE FOR THE REMAINDER OF THE CALL FOR HEA T REQUEST .
Page 58 T roubleshooting: Heating Sequence of Operation (Continued) 2ND ST AGE HEA T RUN MODE: 1ST OR 2ND ST AGE CALL FOR HEA T . ALL INPUTS MONITORED (LIMIT , PRESSURE, CALL FOR HEA T/COOL, FLAME LEV.
Page 59 T roubleshooting: Cooling Sequence of Operation (Continued) 1ST ST AGE COOLING REQUEST RECEIVED ENERGIZE 1ST ST AGE COOLING CONT ACTOR (COMPRESSOR & F AN) 2ND ST AGE COOLING REQUEST? NO YE.
Page 60 T roubleshooting: Continuous Fan Sequence of Operation CALL FOR F AN CALL FOR F AN REMOVED? YES NO NO REQUEST FOR HEA T RECEIVED? REQUEST FOR COOLING RECEIVED? GO TO CALL FOR 1ST ST AGE HEA T .
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Lennox International Inc. SL280DFV è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Lennox International Inc. SL280DFV - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Lennox International Inc. SL280DFV imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Lennox International Inc. SL280DFV ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Lennox International Inc. SL280DFV, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Lennox International Inc. SL280DFV.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Lennox International Inc. SL280DFV. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Lennox International Inc. SL280DFV insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
