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• Request the dealer or an authorized technician to install the product.

Improper installation of the product could result in water leakage, an electrical shock, or fire.

• Inform customers that they should store this Installation Manual for future reference.

• After completing the installation, make sure that the unit operates properly during the startup operation.

• All phases of the field-installation, including, but not limited to, electrical, piping, and safety, must be done in accordance with manufacturer’s 

instructions and must comply with national, state, provincial, and local codes. 

• This product is a heater designed to melt snow that is blown into the product from the outside to prevent the drain pan of the outdoor unit from 

freezing.

• Install the product with a snow-break hood on a high stand if this product is used in heavy snow areas.

• The product must be installed according to the instructions given in this manual.

The Incomplete installation of the product could result in water leakage, an electrical shock, or fire.

• Use the supplied or specified installation parts.

Use of other parts could result in the unit becoming loose and falling, water leakage, electrical shocks, or fire.

• Turn OFF the power supply at the time of installation.

Touching any electrical parts may with the power supply turned on could result in electrical shocks.

• Use specified wires. Connect and fix the wires so that the wires will not put improper force on the terminal junctions.

Wires connected or fixed improperly could result in terminal overheating, an electrical shock, or fire.

• When wiring and connecting the indoor and outdoor units, carefully arrange the wiring so that they will not put improper 

force on the structures.

Install covers over the wires. Incomplete cover installation could result in terminal overheating, an electrical shock, or fire.

• Wear protective gloves at the time of installation.

Touching the suction mouth or aluminum fin of the outdoor unit may result in injury.

• Do not install the product in places where there is danger of exposure to inflammable gas leakage.

If the gas leaks and builds up around the unit, it may catch fire.

• Do not grab the top plate of the outdoor unit carelessly when removing the top plate. 

The sharp edge of the top plate may cause injury.

• Do not install the outdoor unit in places where small animals may nest in the outdoor unit.

If small animals intrude and touch the internal parts of the outdoor unit, the outdoor unit may malfunction, generate smoke, or ignite. 
Advise the user to keep the place clean.

• Do not touch the heater unit with bare hands.

The temperature of the heater unit will become high when the heater is turned on. 
Touching the heater unit with bare hands may result in burns or injury.

WARNING

CAUTION

• Do not touch the heater unit without wearing gloves.

The temperature of the heater unit will become high when the heater is turned on. 
Touching the heater unit with bare hands will result in burns or injury.

DANGER

Read these 

SAFETY CONSIDERATIONS

 carefully before installing the drain pan heater. After completing the installation, check if the unit operates 

properly during the start-up operation.

Meaning of 

DANGER, WARNING and CAUTION

 symbols.

2P326981-2  

M12B192

Safety Considerations for Installation of Drain Pan Heater

DRAIN PAN HEATER

Two-dimensional bar code 
is a code for manufacturing.

MODELS: 

KEH041A42, KEH041A47, KEH041A48

Indicates an imminently hazardous situation which, if not 
avoided, will result in death or serious injury.

Indicates a potentially hazardous situation which, if not 
avoided, could result in death or serious injury.

Indicates a potentially hazardous 
situation which, if not avoided, may 
result in minor or moderate injury. It 
may also be used to alert against 
unsafe practices.

DANGER

WARNING

CAUTION

Summary of Contents for KEH041A42

Page 1: ...erminal overheating an electrical shock or fire Wear protective gloves at the time of installation Touching the suction mouth or aluminum fin of the outdoor unit may result in injury Do not install the product in places where there is danger of exposure to inflammable gas leakage If the gas leaks and builds up around the unit it may catch fire Do not grab the top plate of the outdoor unit careless...

Page 2: ... Sealing material square F Installation manual G Electric wiring diagram label H Information label J Fixing plate K The appearance of the outdoor unit and the number of screws may differ from some models J H Number and type of screws to be removed Parts name Stop valve cover Service lid Top plate Anti drip cover Front plate 1 2 4 6 1 1 2 1 1 2 5 1 2 3 7 1 2 2 2 2 2 4 5 1 1 2 2 KEH041A42 KEH041A47 ...

Page 3: ...the bottom frame and the partition plate Refer to Installation Procedure 3 for the parts for drilling and the number of holes Place the actual components to ensure positioning is correct before drilling holes The hole can be made with the included piercing screw as well 2 Install the drain pan heater Insert the plate under the heat exchanger For KEH041A42 and KEH041A48 place K fixing plate 3 Fix t...

Page 4: ...dure 3 Partition plate Ground plate Make the ground plate closely adhere to the partition Hole Hole Partition plate Ground plate Make the ground plate closely adhere to the partition Hole Heat exchanger Heat exchanger Hole Fix with B piercing screw B K Fixing plate Plate Insert the plates under the heat exchanger Plate Insert the plates under the heat exchanger Hole Fix with B piercing screw B Fix...

Page 5: ...location Cut the tip of binding band F E D KEH041A42 KEH041A47 KEH041A42 KEH041A47 Installation Procedure 4 4 Route the harnesses When drilling a hole be careful not to damage the soundproofing material and other components on the back side When drilling a hole in the partition plate be careful not to let chippings drop on the electrical components particularly the reactor Operating the unit with ...

Page 6: ...ositions to protect the harness 4 Insert the snap band into the hole in the electrical wiring box to fix it Any of the holes can be used 5 Fix the harness on the electrical wiring box with the D binding band Cut the tip of binding band KEH041A48 D Binding band View C View B Cut the electrical wiring box F D F Sealing materials square Attach to the edges of the partition plate Snap band Any of the ...

Page 7: ...d terminal for the drain pan heater to the terminal board D Binding band Thermostat side terminal black harness Heater side terminal white harness Ground terminal Unsheathed connecting cable for the indoor unit After inserting the cable release your hand to close and fix the connection Push How to connect to the relay connector 1 Remove the connecting cable for the indoor unit from Terminals 1 and...

Page 8: ...y out the continuity test again 2 Check the following after powering on the unit Turn on the power supply and check that the temperature of the drain pan heater will rise Touch the bottom of the outdoor unit by hand and check the temperature rise If the outdoor temperature is high the heater will not be energized which is not a failure Operation of thermo sensor Turned on at 23 F 5 C and off at 34...

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