Daikin KEH094A41E User manual

View A
• Read these Safety Considerations carefully to ensure
correct installation.
• 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.
• Meaning of DANGER, WARNING and CAUTION symbols:
Safety Considerations
Safety Considerations
Accessories
Accessories
Tools Required for Installation
Tools Required for Installation
Installation Procedure (1)
Installation Procedure (1)
:Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
WARNING
:Indicates an imminently hazardous
situation which, if not avoided, will result
in death or serious injury.
DANGER
• Electric drill • φ1/8 inch (φ3.2mm) drill • Phillips screwdriver • Nippers
: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.
CAUTION
WARNING
CAUTION
• Only qualified personnel must carry out the installation work.
Installation must be done in accordance with this
installation manual.
Improper installation may result in electric shock, fire, or
equipment damage.
• Use only specified accessories and parts for installation work.
Failure to use specified parts may result in electric shock,
fire, the product falling, or equipment damage.
• Before touching electrical parts, turn off the unit.
• 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 electric 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 electric shock, or fire.
WARNING
• Be sure to check that the power supply of the product is turned off.
DANGER
• 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.
• 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.
1. Remove each component of the outdoor unit.
1) Remove the top plate.
2) Remove the stop valve cover.
3) Remove the protection plate.
4) Remove the front plate.
2. Remove the fan motor base.
1) Remove the fixing screws at the lower section of the fan motor base. (2 screws)
2) Remove the fan motor base together with the propeller fan and ensure that stress is not placed on the propeller fan
when placing them aside.
• Do not remove the fan motor harness.
• Ensure that the fan motor harness does not come into contact with the edges of the heat exchanger or other
components.
Drain pan heater
AScrew M4 × 1/2” (M4 × 12mm)
B
Cable tie
CInstallation Manual
D
1
1
3
1
• Screw types for each component are indicated as below.
No icon: Hexagon tapping screw
 : Truss head tapping screw
3P647274-1 M20B237
DRAIN PAN HEATER [KEH094A41E]
INSTALLATION MANUAL
Protection plate
Screws
Give this installation manual to the user when installation
is completed.
View A
The lugs of the fan motor
base are hooked on the
heat exchanger.
2 screws
: Truss head tapping screw
Appearance of the outdoor unit may differ from
some models.
A
View A
Top plate (4 screws)
Stop valve cover (1 screw)
Front plate
(8 screws)
Protection plate (3 screws)



01_EN_3P647274-1.indd 1 2021/02/25 13:50:57

View A
• Read these Safety Considerations carefully to ensure
correct installation.
• 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.
• Meaning of DANGER, WARNING and CAUTION symbols:
Safety Considerations
Safety Considerations
Accessories
Accessories
Tools Required for Installation
Tools Required for Installation
Installation Procedure (1)
Installation Procedure (1)
:Indicates a potentially hazardous
situation which, if not avoided, could
result in death or serious injury.
WARNING
:Indicates an imminently hazardous
situation which, if not avoided, will result
in death or serious injury.
DANGER
• Electric drill • φ1/8 inch (φ3.2mm) drill • Phillips screwdriver • Nippers
: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.
CAUTION
WARNING
CAUTION
• Only qualified personnel must carry out the installation work.
Installation must be done in accordance with this
installation manual.
Improper installation may result in electric shock, fire, or
equipment damage.
• Use only specified accessories and parts for installation work.
Failure to use specified parts may result in electric shock,
fire, the product falling, or equipment damage.
• Before touching electrical parts, turn off the unit.
• 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 electric 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 electric shock, or fire.
WARNING
• Be sure to check that the power supply of the product is turned off.
DANGER
• 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.
• 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.
1. Remove each component of the outdoor unit.
1) Remove the top plate.
2) Remove the stop valve cover.
3) Remove the protection plate.
4) Remove the front plate.
2. Remove the fan motor base.
1) Remove the fixing screws at the lower section of the fan motor base. (2 screws)
2) Remove the fan motor base together with the propeller fan and ensure that stress is not placed on the propeller fan
when placing them aside.
• Do not remove the fan motor harness.
• Ensure that the fan motor harness does not come into contact with the edges of the heat exchanger or other
components.
Drain pan heater
AScrew M4 × 1/2” (M4 × 12mm)
B
Cable tie
CInstallation Manual
D
1
1
3
1
• Screw types for each component are indicated as below.
No icon: Hexagon tapping screw
 : Truss head tapping screw
3P647274-1 M20B237
DRAIN PAN HEATER [KEH094A41E]
INSTALLATION MANUAL
Protection plate
Screws
Give this installation manual to the user when installation
is completed.
View A
The lugs of the fan motor
base are hooked on the
heat exchanger.
2 screws
: Truss head tapping screw
Appearance of the outdoor unit may differ from
some models.
A
View A
Top plate (4 screws)
Stop valve cover (1 screw)
Front plate
(8 screws)
Protection plate (3 screws)



01_EN_3P647274-1.indd 1 2021/02/25 13:50:57

123
View A
A
Remove 2 screws. (Hexagon tapping screw)
Installation Procedure (3)
Installation Procedure (3)
Installation Procedure (2)
Installation Procedure (2)
4. Route the harnesses.
6. Install each component to the original position.
2) Connect the black harness to the leftmost terminal and the white harness to the second leftmost
terminal.
• Be careful not to confuse screw types. Refer to “Installation Procedure (1) ”.
1) Remove 2 screws from the bottom frame so that the plates of the drain pan heater can be inserted under the heat
exchanger with ease.
2) Lift up the heat exchanger and insert the plates of the drain pan heater under the heat exchanger.
• The ground plate of the drain pan heater should be installed so that it firmly adheres to the bottom frame.
• Install the drain pan heater in a position where it does not come into contact with the fan motor base.
3) Fix the drain pan heater with the screws. (3 locations)
A
A B
5. Cut the jumper.
CAUTION
• When drilling a hole, be careful not to damage the soundproofing material and other components on the back side.
3. Install the drain pan heater.
A
1) Flex the sheet metal of the outdoor unit and pull the harness around.
1) Remove the electrical wiring box cover.
2) Cut the jumper (J9) of the PCB inside.
View B
Holes
(2 locations)
Partition
plate
Ground plate
(The ground plate should be
installed so that it firmly
adheres to the partition plate.)
Secure with cable ties (3 locations)
Black harness White harness
Hook
(3 places)
Cut the jumper (J9)
Electrical wiring box cover
B
Pass the harness
through the slit in the
electrical wiring box
Secure with cable tie
C
Plate (Insert the plate under the heat exchanger.)
Drain pan heater
A
Hole (Fix with the screw.)
B
Heat exchanger
Screws
B
01_EN_3P647274-1.indd 2 2021/02/25 13:50:57

123
View A
A
Remove 2 screws. (Hexagon tapping screw)
Installation Procedure (3)
Installation Procedure (3)
Installation Procedure (2)
Installation Procedure (2)
4. Route the harnesses.
6. Install each component to the original position.
2) Connect the black harness to the leftmost terminal and the white harness to the second leftmost
terminal.
• Be careful not to confuse screw types. Refer to “Installation Procedure (1) ”.
1) Remove 2 screws from the bottom frame so that the plates of the drain pan heater can be inserted under the heat
exchanger with ease.
2) Lift up the heat exchanger and insert the plates of the drain pan heater under the heat exchanger.
• The ground plate of the drain pan heater should be installed so that it firmly adheres to the bottom frame.
• Install the drain pan heater in a position where it does not come into contact with the fan motor base.
3) Fix the drain pan heater with the screws. (3 locations)
A
A B
5. Cut the jumper.
CAUTION
• When drilling a hole, be careful not to damage the soundproofing material and other components on the back side.
3. Install the drain pan heater.
A
1) Flex the sheet metal of the outdoor unit and pull the harness around.
1) Remove the electrical wiring box cover.
2) Cut the jumper (J9) of the PCB inside.
View B
Holes
(2 locations)
Partition
plate
Ground plate
(The ground plate should be
installed so that it firmly
adheres to the partition plate.)
Secure with cable ties (3 locations)
Black harness White harness
Hook
(3 places)
Cut the jumper (J9)
Electrical wiring box cover
B
Pass the harness
through the slit in the
electrical wiring box
Secure with cable tie
C
Plate (Insert the plate under the heat exchanger.)
Drain pan heater
A
Hole (Fix with the screw.)
B
Heat exchanger
Screws
B
01_EN_3P647274-1.indd 2 2021/02/25 13:50:57