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ATTENTION INSTALLERS:

It is your responsibility to know this product better than your customer. This includes being able to install the product according 
to strict safety guidelines and instructing the customer on how to operate and maintain the equipment for the life of the product. 
Safety should always be the deciding factor when installing this product and using common sense plays an important role as 
well. Pay attention to all safety warnings and any other special notes highlighted in the manual. Improper installation of the unit 
or failure to follow safety warnings could result in serious injury, death, or property damage. These instructions are primarily 
intended to assist qualified individuals experienced in the proper installation of this appliance. Some local codes require 
licensed installation/service personnel for this type of equipment. After completing the installation, return these instructions to 
the customer’s package for future reference.

WARNING:

!

DO NOT DESTROY. PLEASE READ CAREFULLY AND KEEP IN A SAFE PLACE FOR FUTURE REFERENCE.

FIRE OR EXPLOSION HAZARD

• Failure to follow safety warnings exactly 

could result in serious injury or property 
damage.

• Installation and service must be performed 

by a qualified installer, service agency or the 
gas supplier.

• Do not store or use gasoline or other 

flammable vapors and liquids in the vicinity 
of this or any other appliance.

WHAT 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.

• Leave the building immediately.
• Immediately call your gas supplier from a 

neighbors phone. Follow the gas suppliers 
instructions.

• If you cannot reach your gas supplier, call 

the fire department.

15 SEER

 Dual Fuel Heating and Cooling Packaged System

DF6SF SERIES

Premium Model Shown

INSTALLATION INSTRUCTIONS

Summary of Contents for iHybrid DF6SF Series

Page 1: ...ice personnel for this type of equipment After completing the installation return these instructions to the customer s package for future reference WARNING DO NOT DESTROY PLEASE READ CAREFULLY AND KEE...

Page 2: ...ation 4 Emergency Heat 4 Defrost Operation 4 Operating the Heat Pump for Automatic Cooling and Heating 5 Oper the Indoor Blower Continuously 5 Shutting the Heat Pump Off 5 HEAT PUMP MAINTENANCE 5 Regu...

Page 3: ...Start Checklist 20 Start up Procedure 20 Air Circulation 21 Short Cycle Protection 21 System Cooling 21 Secondary Heating 21 Verifying Adjusting Temperature Rise 21 Verifying Adjusting Firing Rate 21...

Page 4: ...rmostat manufacturer s User Manual for detailed programming instructions Cooling Operation 1 Set the thermostat s system mode to COOL or AUTO and change the fan mode to AUTO See Figure 1 2 Setthetempe...

Page 5: ...gure 1 NOTE The system will not operate regardless of the temperature selector setting HEAT PUMP MAINTENANCE CAUTION Shut off all electrical power to the unit before performing any maintenance on the...

Page 6: ...ed shirt and appropriate breathing protection when working near this insulation If contact with skin occurs wash immediately with soap and water In case of contact with eyes flush immediately with wat...

Page 7: ...designed to provide the correct flow rates and external pressure rise An improperlydesignedductsystemcanresultinnuisance shutdowns and comfort or noise issues Installationofequipmentmayrequirebrazingo...

Page 8: ...deration should also be given to availability of electric power service access noise and shade A clearance of at least 36 inches from the blower access panel and from the louvered control access panel...

Page 9: ...combustion the flame roll out control located above the burners will open turningoffthegassupplytotheburners Thissafetydevice is a manually reset switch IMPORTANT NOTE DO NOT install jumper wires acr...

Page 10: ...NNEMENT AU MONOXYDE DE CARBONEd Le non respect des consignes suivantes portant sur chacun des appareils raccord s au syst me d vacuation mis en service pourrait entra ner l empoisennement au monoxyde...

Page 11: ...leaks in the heat exchanger The cover for the opening shall be attached in a way that will prevent leaks If outside air is utilized as return air to the unit for ventilation or to improve indoor air...

Page 12: ...C 25 50 or less Fiber duct work may be used in place of internal duct liners if the fiber duct work is in accordance with the current revision of the SMACNA construction standard on fibrous glass duct...

Page 13: ...ge to the unit should be supplied from a dedicated branch circuit containing the correct fuse or circuit breaker for the unit Anelectricaldisconnectmustbelocatedwithinsight of and readily accessible t...

Page 14: ...ntrance Recommended wire gauge and wire lengths for typical thermostat connections are listed in Table 4 Several thermostat options are available depending on the accessories installed with the unit S...

Page 15: ...for heat anticipator settings Configuring the Variable Speed Blower The variable speed blower has been designed to give the installer maximum flexibility for optimizing system performance efficiency...

Page 16: ...above the terminate set point or when the Y input is removed whichever occurs first NOTE If a demand curve is selected which has a 30 second compressor time delay in defrost the delay is reduced to 10...

Page 17: ...nect the other end of the spare wire to R at the indoor unit or thermostat Thermostat Demand Wiring TheComfortAlertmodulerequiresatwostagethermostat to operate properly The Y2 thermostat wire entering...

Page 18: ...ndicates a demand signal is received from the thermostat but current to the compressor is not detected by the module The TRIP LED typically indicates if the compressor protector is open or the compres...

Page 19: ...ge personal injury or loss of life Failure to follow the safety warnings exactly could result in serious injury death or property damage After the gas piping to the unit is complete all connections mu...

Page 20: ...rical disconnects to energize the system Air Circulation Leave the thermostat system mode on OFF and set the fan mode to ON Blower should run continuously Check the air delivery at the supply register...

Page 21: ...failure 1 Placethermometersinthereturnandsupplyairstream asclosetotheunitaspossible Thethermometeronthe supplyairsidemustbeshieldedagainstdirectradiation from the heat exchanger to avoid false reading...

Page 22: ...tem is installed according to these instructions no refrigerantchargingisrequired Ifrepairsmakeit necessaryforevacuationandcharging itshould only be done by qualified trained personnel thoroughly fami...

Page 23: ...e energized opening the compressor contactor 5 If the thermostat does not satisfy on 2nd stage heat pump mode the thermostat or outdoor sensor will call for the back up gas heat NOTE If the unit is sw...

Page 24: ...ilure the warm up is increased by 3 seconds on the next try If successful the timing remains fixed at this level In general whenever ignition failure occurs the warm up interval is increased by 3 seco...

Page 25: ...ion in the gas supply piping at the unit 10 Remove the piping between the gas valve and the ground joint union if necessary 11 Remove the screws that secure the burner assembly in place and the burner...

Page 26: ...e The circulating air blower and combustion blower will continue to operate if the over temperature limit control opens Troubleshooting If the unit does not operate in the cooling mode check the follo...

Page 27: ...y Entry 15 75 23 75 29 75 2 9 1 8 4 0 12 45 12 45 4 0 D 8 75 Horizontal Supply Duct Opening Horizontal Return Duct Opening 4 0 1 75 9 75 24 75 16 0 Condensing Coil 13 5 16 0 16 0 C 13 5 figures tables...

Page 28: ...t 5 6 7 46 800 72 000 65 000 100 000 78 000 120 000 0 0 550 63 732 73 700 59 1170 63 750 77 1255 71 1 0 650 53 865 62 800 60 1240 60 900 64 1395 64 0 1 750 46 998 53 1000 48 1640 45 1050 55 1720 52 1...

Page 29: ...346 50 72 360 720 106 34 170 340 52 69 346 692 108 33 167 333 54 67 333 667 110 33 164 327 56 64 321 643 112 32 161 321 58 62 310 621 114 32 158 316 60 60 300 600 116 31 155 310 62 58 290 581 118 31 1...

Page 30: ...entetavertirlacompagnie du gaz en utili sant le t l phone d un voisin A d faut de la compagnie du gaz avertir le service des pompiers C Enfoncer ou faire tourner le robinet gaz la main seulement Nejam...

Page 31: ...suitable on systems that exceed 150V to ground 4 If any of the original wire as supplied with the furnace must be replaced it must be replaced with wiring material having a temp rating of at least 105...

Page 32: ...t wires from the blower remain connected to the board thermostat terminals after making the field thermostat connections 7 Wiring shown for single stage operation For two stage operation move brown wi...

Page 33: ...Flashes 230 VAC Neutral Reversed or No Ground 5 Flashes False Flame or Gas Relay Shorted Continuous Flash f f O f f O r e w o P W O L L E Y T H G I L S U T A T S N O I T I D N O C T L U A F Low Flame...

Page 34: ...re that wires from the blower remain connected to the board thermostat terminals after making the field thermostat connections 7 Wiring shown for single stage operation For two stage operation move br...

Page 35: ...hart Cooling Remove refrigerant when above curve Add refrigerant when below curve Figure 17 Charging Chart for 2 Ton Units 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 520 540 560 5...

Page 36: ...hart Cooling Remove refrigerant when above curve Add refrigerant when below curve Figure 19 Charging Chart for 4 Ton Units 200 220 240 260 280 300 320 340 360 380 400 420 440 460 480 500 520 540 560 5...

Page 37: ...heck for excessively low thermostat setting Check evaporator airflow coil blockages or return airfilter Check ductwork or registers for blockage Faulty metering device Check TXV bulb installation size...

Page 38: ...mpressor protector reset time due to extreme ambient temperature Compressor windings are damaged Check compressor motor winding resistance ALERT Flash Code 6 Yellow LED Open Start Circuit Current only...

Page 39: ...ompressor short cycling Verify Y terminal is connected to 24VAC at contactor coil Verify voltage at contactor coil falls below 0 5VAC when off ALERT Flash Code 5 6 or 7 displayed incorrectly Open Circ...

Page 40: ...lateur qualifi un organisme de service ou le fournisseur de gazstaller service agency or the gas supplier Ne pas entreposer ni utiliser de l essence ni d autres vapeurs ou liquides inflammables dans l...

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Page 44: ...________________________________________ UNIT SERIAL ________________________________________ UnitInstalledMinimumclearancesper Figure 2 page 8 YES NO INSTALLER NAME CITY________________________ STATE...

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