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Outdoor Coil 

The outdoor unit must be properly maintained to ensure 

its proper operation. 
•   Please contact your dealer to schedule proper inspec-

tion and maintenance for your equipment. 

• 

 Make sure no obstructions restrict airflow to the outdoor unit. 

•   Grass clippings, leaves, or shrubs crowding the unit can 

cause the unit to work harder and use more energy. 

•   Keep shrubbery trimmed away from the unit and peri-

odically check for debris which collects around the unit. 

Routine Maintenance 

In order to ensure peak performance, your system must 

be properly maintained. Clogged filters and blocked airflow 

prevent your unit from operating at its most efficient level. 

1 -   

Air Filter

  – Ask  your  Lennox  dealer  to  show  you 

where  your  indoor  unit's  filter  is  located.  It  will  be 

either at the indoor unit (installed internal or external 

to the cabinet) or behind a return air grille in the wall 

or  ceiling.  Check  the  filter  monthly  and  clean  or 

replace it as needed. 

2 -   

Disposable Filter

  –  Disposable  filters  should  be 

replaced with a filter of the same type and size. 

NOTE

 – 

If you are unsure about the filter required for your 

system, call your Lennox dealer for assistance.

 

3 -   

Reusable Filter

 – Many indoor units are equipped 

with  reusable  foam  filters.  Clean  foam  filters  with 

a mild soap and water solution; rinse thoroughly; 

allow  filter to dry completely  before  returning  it to 

the unit or grille. 

NOTE

 – 

The filter and all access panels must be in place 

any time the unit is in operation.

 

4 -   

Electronic Air Cleaner

  –  Some  systems  are 

equipped with an electronic air cleaner, designed 

to remove airborne particles from the air passing 

through the cleaner. If your system is so equipped, 

ask your dealer for maintenance instructions. 

5 -   

Indoor Unit

 – The indoor unit's evaporator coil is 

equipped with a drain pan to collect condensate 

formed as your system removes humidity from the 

inside air. Have your dealer show you the location 

of the drain line and how to check for obstructions. 

(This  would  also  apply  to  an  auxiliary  drain,  if 

installed.) 

Thermostat Operation 

See the thermostat homeowner manual for instructions on 

how to operate your thermostat.

Heat Pump Operation 

Your new Lennox heat pump has several characteristics 

that you should be aware of: 
•   Heat pumps satisfy heating demand by delivering large 

amounts of warm air into the living space. This is quite 

different from gas- or oil-fired furnaces or an electric fur

-

nace which deliver lower volumes of considerably hotter 

air to heat the space. 

•   Do not be alarmed if you notice frost on the outdoor coil 

in the winter months. Frost develops on the outdoor coil 

during the heating cycle when temperatures are below 

45°F (7°C). An electronic control activates a defrost cy-

cle lasting 5 to 15 minutes at preset intervals to clear the 

outdoor coil of the frost. 

•   During the defrost cycle, you may notice steam rising 

from the outdoor unit. This is a normal occurrence. The 

thermostat may engage auxiliary heat during the defrost 

cycle to satisfy a heating demand; however, the unit will 

return to normal operation at the conclusion of the de-

frost cycle. 

Extended Power Outage 

The heat pump is equipped with a compressor crankcase 

heater which protects the compressor from refrigerant 

slugging during cold weather operation. 
If power to your unit has been interrupted for several hours 

or more, set the room thermostat selector to the EMER-

GENCY  HEAT  setting  to  obtain  temporary  heat  without 

the risk of serious damage to the heat pump. 

In EMERGENCY HEAT mode, all heating demand is sat

-

isfied by auxiliary heat; heat pump operation is locked out. 

After a six-hour compressor crankcase warm-up period, 

the thermostat can be switched to the HEAT setting and 

normal heat pump operation may resume. 

Preservice Check 

If your system fails to operate, check the following before 

calling for service: 
•  Verify room thermostat settings are correct. 
•  Verify that all electrical disconnect switches are ON. 
•  Check for any blown fuses or tripped circuit breakers. 
•  Verify unit access panels are in place. 
• 

Verify air filter is clean. 

•   If service is needed, locate and write down the unit 

model number and have it handy before calling. 

Accessories

 

For update-to-date information, see any of the following 

publications: 
• 

Lennox 16HPX Product Specification bulletin 

• 

Lennox Product Catalog 

• 

Lennox Price Book

Содержание 16HPX Series

Страница 1: ...plies before opening access panel Unit may have multiple power supplies 16HPX Table of Contents Installation Clearances 2 Model Number Identification 2 Dimensions 3 Specifications 4 Typical Unit Parts...

Страница 2: ...14 mm Clearance to one of the remaining two sides may be A clearance of 24 in must be maintained between two units 48 in 1219 mm clearance required on top of unit Model Number Identification 16 HP X 0...

Страница 3: ...NNECTION 6 3 8 162 TOP VIEW BASE SECTION COMPRESSOR COIL DRAIN OUTLETS Around perimeter of base OPTIONAL UNIT STAND OFF KIT 4 Field Installed 111 4 3 8 4 3 8 4 3 8 4 3 8 6 3 8 162 111 111 111 111 4 3...

Страница 4: ...ctor 0 98 0 99 0 99 0 99 Outdoor Coil Fan Motor Full load amps 0 7 1 7 1 8 2 8 CONTROLS ORDER SEPARATELY iComfort M30 Smart Wi Fi Thermostat 15Z69 Remote Outdoor Temperature Sensor X2658 OPTIONAL ACCE...

Страница 5: ...d wrench should be used and fitted snugly over the cap before tightening When servicing or repairing HVAC components ensure the fasteners are appropriately tightened Table 3 provides torque values for...

Страница 6: ...7 8 9 10 11 12 1 12 TURN To Access Service Port A service port cap protects the service port core from contamination and serves as the primary leak seal 1 Remove service port cap with an appropriately...

Страница 7: ...ent of unit in relation to a window see the provided illustration in figure 3 detail A PLACING UNIT ON SLAB When installing unit at grade level the top of the slab should be high enough above grade so...

Страница 8: ...ons that may cause panels to be blown around and battered WARNING REMOVAL STEP 1 INSERT PANEL UNDER UNIT TOP CAP LIP AND LIFT SLIGHTLY TO CLEAR SIDE LIP OF PANEL FROM BASE STEP 2 PANEL INSTALLATION TO...

Страница 9: ...unt of refrigerant charge in the system No need to add oil in system with 20 pounds of refrigerant or less For systems over 20 pounds add one ounce for every five pounds of refrigerant Recommended top...

Страница 10: ...be used if line set is to be installed on exterior of outside wall PVC PIPE FIBERGLASS INSULATION CAULK OUTSIDE WALL VAPOR LINE WRAPPED WITH ARMAFLEX LIQUID LINE OUTSIDE WALL LIQUID LINE VAPOR LINE WO...

Страница 11: ...dous to your health Avoid breathing vapors or fumes from brazing operations Perform operations only in well ventilated areas Wear gloves and protective goggles or face shield to protect against burns...

Страница 12: ...SERVICE VALVE Flow regulated nitrogen at 1 to 2 psig through the low side refrigeration gauge set into the liquid line service port valve and out of the suction vapor line service port valve CUT AND D...

Страница 13: ...tions for the next step in preparing the unit WHEN BRAZING LINE SET TO SERVICE VALVES POINT FLAME AWAY FROM SERVICE VALVE PREPARATION FOR NEXT STEP 7 WARNING 1 FIRE PERSONAL INJURY OR PROPERTY DAMAGE...

Страница 14: ...ISTING INDOOR UNIT GAUGE MANIFOLD INVERTED CYLINDER CONTAINS CLEAN HCFC22 TO BE USED FOR FLUSHING LIQUID LINE SERVICE VALVE INLET DISCHARGE TANK RETURN CLOSED OPENED RECOVERY CYLINDER RECOVERY MACHINE...

Страница 15: ...hreads and expose surface of the Teflon ring with refrigerantoil E Attach the liquid line assembly to the expansion valve Finger tighten and use an appropriately sized wrench to turn an additional 1 2...

Страница 16: ...losed connect the cylinder of HFC 410A refrigerant to the center port of the manifold gauge set Open the valve on the HFC 410A cylinder vapor only B Open the high pressure side of the manifold to allo...

Страница 17: ...r unit until the absolute pressure does not rise above 500 microns 29 9 inches of mercury within a 20 minute period after shutting off the vacuum pump and closing the manifold gauge valves F When the...

Страница 18: ...to unit nameplate for minimum circuit ampacity and maximum overcurrent protection size 24VAC TRANSFORMER Use the transformer provided with the furnace or air han dler for low voltage control power 24...

Страница 19: ...TO PREVENT DAMAGE TO CONTROL SEE INSTALLATION INSTRUCTION FOR FURTHER DETAILS Typical Field Wiring Heat Pump Application with CBA38MV FIGURE 12 YELLOW BLUE NOT REQUIRED FOR SINGLE STAGE RED BLACK PUR...

Страница 20: ...ssure switches Defrost Thermostat S6 The defrost thermostat is located on the liquid line be tween the check expansion valve and the distributor When defrost thermostat senses 42 F 5 5 C or cooler the...

Страница 21: ...CONNECTIONS TEST PINS P1 Note Component locations vary by board manufacturer SENSOR CONNECTION COIL AND AMBIENT SENSORS P4 REVERSING VALVE O OUT DELAY PINS P5 LOW AMBIENT THERMOSTAT PINS P3 DEFROST T...

Страница 22: ...of the defrost mode When a jumper is installed on the DELAY pins the compressor will be cycled off for 30 seconds going in and out of the defrost mode Units are shipped with jumper installed on DELAY...

Страница 23: ...ature probe is de signed with a spring clip to allow mounting to the outside coil tubing The location of the coil sensor is important for proper defrost operation NOTE The demand defrost control accur...

Страница 24: ...tem Remove any blockages or restrictions from coils and or fans Check indoor and outdoor fan motor for proper current draws Check system charge using subcooling method Check system operating pressures...

Страница 25: ...performed by the homeowner IMPORTANT Sprinklers and soaker hoses should not be installed where they could cause prolonged exposure to the outdoor unit by treated water Prolonged exposure of the unit t...

Страница 26: ...rmostat homeowner manual for instructions on how to operate your thermostat Heat Pump Operation Your new Lennox heat pump has several characteristics that you should be aware of Heat pumps satisfy hea...

Страница 27: ...Page 27 Wiring and Sequence of Operation FIGURE 15 Typical Unit Wiring 024 036 and 048 Units...

Страница 28: ...Page 28 FIGURE 16 Typical Unit Wiring 060 Units...

Страница 29: ...Page 29 FIGURE 17 Typical Factory Wiring 024 036 and 048 Units...

Страница 30: ...Page 30 FIGURE 18 Typical Factory Wiring 060 Units...

Страница 31: ...emand cycle If the coil sensor temperature is still below the selected termination temperature the control will continue the defrost cycle until the cycle is terminated in one of the methods mentioned...

Страница 32: ...um Fuse or Circuit Breaker Electrical Connections Tight Indoor Filter clean Supply Voltage Unit Off Indoor Blower RPM S P Drop Over Indoor Dry Outdoor Coil Entering Air Temp Discharge Pressure Vapor P...

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