Panasonic CS-E9NKUAW User manual

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Order No: PHAAM1111087C1

Indoor Unit Outdoor Unit

CS-E9NKUAW

CS-E12NKUAW

CU-E9NKUA

CU-E12NKUA

Please file and use this manual together with the service manual for Model No. CU-2E18NBU, Order No. PHAAM1111120A1.

PRECAUTION OF LOW TEMPERATURE

In order to avoid frostbite, be assured of no refrigerant leakage during the installation or repairing of refrigerant circuit.

WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public.

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to

service or repair the products dealt with in this service information by anyone else could result in serious injury or death.

Installation Manual

11. Installation Instruction

11.1 Select the Best Location

11.1.1 Indoor Unit

Do not install the unit in excessive oil fume area

such as kitchen, workshop and etc.

There should not be any heat source or steam

near the unit.

There should not be any obstacles blocking the air

circulation.

A place where air circulation in the room is good.

A place where drainage can be easily done.

A place where noise prevention is taken into

consideration.

Do not install the unit near the door way.

Ensure the spaces indicated by arrows from the

wall, ceiling, fence or other obstacles.

Recommended installation height for indoor unit

shall be at least 8.2 ft.

11.1.2 Outdoor Unit

If an awning is built over the unit to prevent direct

sunlight or rain, be careful that heat radiation from

the condenser is not obstructed.

There should not be any animal or plant which

could be affected by hot air discharged.

Keep the spaces indicated by arrows from wall,

ceiling, fence or other obstacles.

Do not place any obstacles which may cause a

short circuit of the discharged air.

If piping length is over the [piping length for

additional gas], additional refrigerant should be

added as shown in the table.

Recommended installation height for outdoor unit

should be above the seasonal snow level.

Example: For E9NKUAW

If the unit is installed at 32.8 ft distance, the quantity

of additional refrigerant should be 1.64 oz ....

(32.8 - 24.6) ft x 0.2 oz/ft = 1.64 oz.

11.1.3 Indoor/Outdoor Unit Installation

Diagram

11.2 Indoor Unit

11.2.1 How to Fix Installation Plate

The mounting wall shall be strong and solid enough to prevent if from the vibration.

The center of installation plate should be at more than cat right and left of the wall.

The distance from installation plate edge to ceiling should more than d.

From installation plate left edge to unit’s left side is e.

From installation plate right edge to unit’s right side is f.

B : For left side piping, piping connection for liquid should be about gfrom this line.

: For left side piping, piping connection for gas should be about hfrom this line.

1 Mount the installation plate on the wall with 5 screws or more (at least 5 screws).

(If mounting the unit on the concrete wall, consider using anchor bolts.)

oAlways mount the installation plate horizontally by aligning the marking-off line with the thread and using

a level gauge.

2 Drill the piping plate hole with ø2-3/4" hole-core drill.

oLine according to the left and right side of the installation plate. The meeting point of the extended line is

the center of the hole. Another method is by putting measuring tape at position as shown in the diagram

above. The hole center is obtained by measuring the distance namely 5-1/6" for left and right hole

respectively.

oDrill the piping hole at either the right or the left and the hole should be slightly slanting to the outdoor

side.

11.2.2 To Drill a Hole in the Wall and

Install a Sleeve of Piping

1 Insert the piping sleeve to the hole.

2 Fix the bushing to the sleeve.

3 Cut the sleeve until it extrudes about 19/32"

from the wall.

4 Finish by sealing the sleeve with putty or

caulking compound at the final stage.

11.2.3 Indoor Unit Installation

11.2.3.1 For the right rear piping

11.2.3.2 For the right bottom piping

11.2.3.3 For the embedded piping

(This can be used for left rear piping and bottom

piping also.)

11.2.4 Connect the Cable to the Indoor Unit

1. The inside and outside connection cable can

be connected without removing the front grille.

2. Unscrew the conduit cover and fix the conduit

connector to conduit cover with lock nut, then

secure it against chassis.

3. Connection cable between indoor unit and

outdoor unit should be UL listed or CSA

approved 4 conductor wires minimum AWG16

in accordance with local electric codes.

oEnsure the colour of wires of outdoor unit

and terminal number are the same as the

indoor's repectively.

oEarth lead wire shall be Yellow/Green

(Y/G) in colour and shall be longer than

other lead wires as shown in the figure for

electrical safety in case of the slipping.

11.2.5 Wiring Stripping and connecting requirement

11.2.5.1 Cutting and flaring the piping

1 Please cut using pipe cutter and then remove the burrs.

2 Remove the burrs by using reamer. If burrs are not removed, gas leakage may be caused. Turn the piping

end down to avoid the metal powder entering the pipe.

3 Please make flare after inserting the flare nut onto the copper pipes.

11.3 Outdoor Unit

11.3.1 Install the Outdoor Unit

After selecting the best location, start installation according to indoor/outdoor unit installation diagram.

1 Fix the unit on concrete or rigid frame firmly and horizontally by bolt nut (ø13/32").

2 When installing at roof, please consider strong wind and earthquake.

Please fasten the installation stand firmly with bolt or nails.

Model A B C D

E9NKUA, E12NKUA 22-7/16" 4-1/8" 23/32" 12-19/32"

11.3.2 Connect the Piping

11.3.2.1 Connecting the piping to

indoor

Please make flare after inserting flare nut (locate at

joint portion, of tube assembly) onto the copper pipe.

(In case of using long piping)

Connect the piping

Align the center of piping and sufficiently tighten

the flare nut with fingers.

Further tighten the flare nut with torque wrench in

specified torque as stated in the table.

11.3.2.2 Connecting the piping to

outdoor

Decide piping length and then cut by using pipe cutter.

Remove burrs from cut edge.

Make flare after inserting the flare nut (locate at valve)

onto the copper pipe.

Align center of piping to valves and then tighten with

torque wrench to the specified torque as stated in the

table.

Do not over tighten, over tightening may cause gas leakage.

Piping size Torque

1/4" 13.3 Ibf.ft

3/8” 31.0 Ibf.ft

1/2" 40.6 Ibf.ft

5/8” 47.9 Ibf.ft

3/4" 73.8 Ibf.ft

11.3.2.3 Connecting the piping to outdoor multi

Decide piping length and then cut by using pipe cutter. Remove burrs from cut edge.

Make flare after inserting the flare nut (locate at valve) onto the copper pipe.

Align center of piping to valve and then tighten with torque wrench to the specified torque as stated in the table.

11.3.2.4 Gas Leak Checking

Pressure test to system to 400 PSIG with dry nitrogen, in stages. Thoroughly leak check the system.

If the pressure holds, release the nitrogen and proceed to section 11.3.3.

11.3.3 Evacuation of the equipment

WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AIR INSIDE THE INDOOR UNIT AND

PIPES in the following procedures.

1. Connect a charging hose with a push pin to the Low side of a charging set and the service port of the 3-way

valve.

2. Connect the micron gauge between vacuum pump and service port of outdoor units.

3. Turn on the power switch of the vacuum pump and make sure that connect digital micron gauge and to pull

down to a value of 500 microns.

4. To make sure micron gauge a value 500 microns and close the low side valve of the charging set and turn off

the vacuum pump.

5. Disconnect the vacuum pump house from the service port of the 3-way valve.

6. Tighten the service port caps of the 3-way valve at a torque of 13.3 Ibf.ft with a torque wrench.

7. Remove the valve caps of both of the 2-way valve and 3-way valve. Position both of the valves to “Open”

using a hexagonal wrench (5/32").

8. Mount valve caps onto the 2-way valve and the 3-way valve.

oBe sure to check for gas leakage.

11.3.3.1 Connect the Cable to the Outdoor Unit

1. Remove Top panel.

2. Remove Control Board Cover (Resin and Metal).

3. Remove Plugs.

4. Fix the conduit connectors to the knockout holes with

lock-nuts, then secure them against the side panel.

5. All wires pass through conduits.

6. Connection cable between indoor unit and outdoor

unit should be UL listed or CSA approved 4 conductor

wires minimum AWG16 in accordance with local

electric codes.

7. Wire connection to the power supply (208/230V 60Hz)

through circuit breaker.

oConnect the UL listed or CSA approved wires

minimum AWG14 to the terminal board, and

connect the other end of the wires to ELCB /

GFCI.

8. Connect the power supply cord and connection cable

between indoor unit and outdoor unit according to the diagram below.

9. Secure the wire onto the control board with the holder

(clamper).

10. After completing wiring connections, reattach the control

board cover (Metal and Resin) and the top panel to the

original position with the screws.

11. For wire stripping and connection requirement, refer to

instruction 11.2.4 of indoor unit.

Earth lead wire shall be Yellow/Green (Y/G) in colour and shall

be longer than other lead wires as shown in the figure for

electrical safety in case of the slipping.

11.3.3.2 Piping Insulation

1. Please carry out insulation at pipe connection portion as mentioned in Indoor/Outdoor Unit Installation

Diagram. Please wrap the insulated piping end to prevent water from going inside the piping.

2. If drain hose or connecting piping is in the room (where dew may form), please increase the insulation by

using POLY-E-FOAM with thickness 1/4" or above.

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