DAIKIN KEH041A45 (01) PDF MANUAL

DAIKIN KEH041A45 (01) PDF SUMMARY:

What should I request from the dealer or an authorized technician?

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.

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What should customers do with the Installation Manual?

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

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What should I do after completing the installation?

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

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What must all phases of the field-installation comply with?

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.

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What should I do if this product is used in heavy snow areas?

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

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How must the product be installed?

The product must be installed according to the instructions given in this manual. Incomplete installation of the product could result in water leakage, an electrical shock, or fire.

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What parts should I use for installation?

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.

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What should I do with the power supply at the time of installation?

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.

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What wires should I use?

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.

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What should I do when wiring and connecting the indoor and outdoor units?

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.

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What should I wear at the time of installation?

Wear protective gloves at the time of installation. Touching the suction mouth or aluminum fin of the outdoor unit may result in injury.

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Where should I avoid installing the product?

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.

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What should I be careful of when removing the top plate of the outdoor unit?

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.

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Where should I avoid installing the outdoor unit?

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.

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What should I not touch with bare hands?

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 will result in burns or injury.

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What are the steps for Installation Procedure (1)?

1. Remove each component of the outdoor unit.
2. Remove the stop valve cover.
   • Affix J information label near the manufacture’s label.
3. Remove the service lid.
   • Affix H electric wiring diagram label where there is enough space available on the back of the front plate.
4. Remove the top plate.
5. Remove the anti-drip cover, if included.
6. Remove the front plate.

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What tools are required for installation?

• Electric drill
• ø1/8” (ø3.2mm) drill
• ø5/32” (ø4mm) drill
• Phillips screwdriver
• Nippers

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What should I be sure to check before beginning the installation?

Be sure to check that the power supply of the product is turned off.

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What are the steps for Installation Procedure (2)?

1. Remove the fan motor base.
2. Remove the fixing screw at the lower section of the fan motor base, and remove the fan motor base together with the propeller fan. See Fig.1.
   • Do not remove the fan motor harness.
   • Be careful so that the fan motor harness does not come into contact with the edges of the heat exchanger or other components.
   • Place the removed fan motor base so that stress is not applied on the propeller fan.
   • Make the ground plate closely adhere to the partition.
   • Install the drain pan heater in a position where it does not come into contact with the fan motor base.

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What are the steps for Installation of the drain pan heater in Installation Procedure (3)?

1. To fix the drain pan heater, drill ø1/8” (ø3.2mm) holes in the bottom frame and the partition plate. (Refer to Installation Procedure (3) for the parts for drilling and the number of holes.)
   • When drilling a hole, be careful not to damage the soundproofing material and other components on the back side.
   • 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 KEH041A41 and KEH041A46, place K fixing plate.
3. Fix the drain pan heater with B piercing screw.

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What are the steps for Installation Procedure (4)?

1. Drill ø5/32” (ø4mm) holes in the partition plate for installing the snap band (3 locations).
   • 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 chippings attached on the reactor may cause electrical shock or fire.
2. Remove the sealing material from the partition plate.
   • Dispose of the removed sealing material.
3. Insert the snap band into the drilled hole.
4. Affix F sealing materials (square) at 2 positions to protect the harness.
5. Place the harness on the F sealing materials (square) and affix the E sealing material (long) to fix it.

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What are the steps for Installation Procedure (5) for KEH041A45?

1. Drill ø5/32” (ø4mm) holes in the partition plate for installing the snap band (2 locations).
2. Insert the snap band into the drilled hole.
3. Place the harness as shown in the figure and affix the E sealing material (long) to fix it.

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What are the steps for Installation Procedure (5) for KEH041A46?

1. Drill ø5/32” (ø4mm) holes in the partition plate for installing the snap band (1 location).
2. Insert the snap band into the drilled hole.
3. Install the fan motor base.
   • Hook the harness of the fan motor base on the hook of the electrical parts box.
4. Hook the harness of the drain pan heater on the hook of the electrical parts box to fix it.
5. Bind the harnesses and the thermostat with the D binding band (3 locations).
   • Cut the tip of binding band.

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What are the steps for connecting the FastOn terminals of the drain pan heater to the terminal block of the outdoor unit in Installation Procedure (6)?

1. Remove the terminal block (1 screw).
   • KEH041A41 and KEH041A45 only.
2. Connect the thermostat-side terminal (black harness) to the leftmost terminal and the heater-side terminal (white harness) to the second leftmost terminal.
3. Bind the harnesses with the D binding band (2 locations).
   • KEH041A41 and KEH041A45 only.
   • Cut the tip of D binding band.

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What are the steps for Installation Procedure (7)?

1. Install each component to the original position.
   • Be careful not to confuse screw types. See “Installation Procedure (1), (2)”.

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What are the steps for Installation Procedure (7) for KEH041A41?

1. Install the terminal block.
   • Secure the terminal block so that it does not lift up.
2. Install the fan motor base.
3. Install the front plate.
4. Install the anti-drip cover, if provided.
5. Install the top plate.

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What should I check before powering on the unit?

1. Check whether the drain pan heater has been properly installed, wiring has been properly performed, and the removed components have been returned to the original positions.
2. Check the insulation resistance of the drain pan heater.
   • Use the tester (500 VDC) to check that the insulation resistance between 1 terminal and the ground terminal and between 2 terminal and the ground terminal is equal to or higher than 1MΩ.
3. Check the continuity of the outdoor unit.
   • If the outdoor unit is RXS09/12DVJU, a continuity test is not necessary.
   • Use the tester to check that the continuity between the screw on the front grille and the ground terminal reads 0Ω.
   • When there is no continuity, retighten the screws securing the front plate and the bottom frame to increase the area of contact with the screw. Then, carry out the continuity test again.

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What should I check 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˚F(1˚C).)

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What are the steps for Installation Procedure (8)?

1. Install the remaining components to the original positions.
   • Be careful not to confuse screw types. See Installation Procedure (1).
2. Install the service lid.
3. Install the stop valve cover.
   • The drain pan heater is hot; do not touch it with bare hands.