Sanyo CH0951 Installation Instructions Manual Download Page 15

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4. How to Install the Outdoor Unit

First refer to Section 2. Installation Site Selection.

4-1. Wiring Instructions for the Outdoor Unit

Regulations on wire size differ from locality to locality. For field

wiring requirements, please refer to your local electrical

codes. Make sure that the installation fully complies with all

local and national regulations.

(1) Remove access panel. (Fig. 41)

(2) Connect the power line according to the drawing on the

panel side.

(3) Be sure to size each wire allowing approx. 4 in. (10 cm)

longer than the required length for wiring. Store excess

wiring inside the cabinet.

(4) When connections are completed, check that all connec-

tions are correct as shown in the wiring system diagram

on panel side.

(5) Be sure to ground the unit according to your local codes.

Lock nut

Terminal
block

Access panel

Control line
(Sheath cable)

Power line
(Conduit)

Plug

Conduit
plate

Power supply
(Conduit)

Fig. 41

■

Examples of Incorrect Wiring

The following are examples of improper wiring that result in system misoperation. You should confirm that you have

wired the units correctly before beginning the test run.

CAUTION

Problem 1

●

Short circuit will occur after approx.

3 minutes and the power circuit fuse

blows.

Problem 3

●

Compressor will not start; only indoor unit will operate.

Problem 2

●

Air conditioner will not operate.

Disconnect
switch

Indoor unit

Grounding line

(D)

Outdoor unit

Disconnect
switch

Indoor unit

Grounding line

(E)

Outdoor unit

Disconnect
switch

Indoor unit

Grounding line

(A)

Outdoor unit

Disconnect
switch

Indoor unit

Grounding line

(B)

Outdoor unit

Disconnect
switch

Indoor unit

Grounding line

(C)

Outdoor unit

CAUTION

Apply sealer (putty, etc.) to

the gap between the sheath

cable and the hole of the

conduit plate to prevent

water from entering.

01-385 AirCon 12/11/01 4:42 PM Page 15

Summary of Contents for CH0951

Page 1: ...ON 4 2 1 Indoor Unit 2 2 Outdoor Unit 3 HOW TO INSTALL THE INDOOR UNIT 6 3 1 Remove the Rear Panel from the Unit 3 2 Make a Hole 3 3 Install the Rear Panel on the Wall 3 4 Remove the Grille to Install the Indoor Unit 3 5 Shape the Indoor Side Tubing 3 6 Wiring Instructions 3 7 Recommended Wire Length and Diameter 3 8 Wiring Instructions for Inter unit Connections 3 9 Mounting 3 10 Drain Hose 4 HOW...

Page 2: ...ental injury or death Ground the unit following local electrical codes Connect all wiring tightly Loose wiring may cause over heating at connection points and a possible fire hazard When Transporting Be careful when picking up and moving the indoor and out door units Get a partner to help and bend your knees when lifting to reduce strain on your back Sharp edges or thin alu minum fins on the air c...

Page 3: ...need 1 Deoxidized annealed copper tube for refrigerant tubing as detailed in Table 2 When cutting tubing add approximately 12 to 16 30 cm to 40 cm to each tube length to reduce vibration between the air conditioning units Table 2 2 Foamed polyethylene insulation for the specified O D copper tubes as required to precise length of tubing Wall thickness of the insulation should be not less than 0 3 i...

Page 4: ...tal tubing length L from the outdoor unit as detailed in Table 3 and Fig 3a Table 3 Drain hose Indoor unit Outside drainage Fig 1 6 15 cm min Front View 2 5 cm min 6 15 cm min KS1852 only 2 5 cm min 6 15 cm min 2 5 cm min Fig 2 INDOOR UNIT Tubing length L OUTDOOR UNIT Elevation difference H Fig 3a Max Allowable Tubing Limit of Tubing Limit of Elevation Required Amount of Length at Shipment Length ...

Page 5: ...er block the air intake outlet or exhaust Distortion of the outdoor unit or incomplete combustion may result Do not introduce foreign matter into the air intake outlet or exhaust Do not poke them with such objects as a stick provide a solid base level concrete pad concrete block 2 to 2 1 2 CH09 12 2 1 2 to 3 CH18 in 16 in 5 to 6 5 6 5 to 7 5 40 cm beams or equal a minimum of 4 in 10 cm above groun...

Page 6: ...le before attaching the rear panel to the wall 2 Determine which side of the unit you should make the hole for tubing and wiring Fig 9 3 Before making the hole check carefully that no studs or pipes are directly run behind the spot to be cut NOTE Fig 9 In case of right rear KHS0951 KHS1251 KHS1852 CAUTION Also avoid areas where electrical wiring or conduits are located Switching drain hose and dra...

Page 7: ...el on the Wall Be sure to confirm that the wall is strong enough to sus pend the unit See either Item a or b below depending on the wall type a If Wooden Wall 1 Attach the rear panel to the wall with the 10 screws provided Fig 13 If you are not able to line up the holes in the rear panel with the beam locations marked on the wall use rawl plugs or toggle bolts to go through the holes on the panel ...

Page 8: ... Pull the lower part of the grille toward you to remove c Use a standard screwdriver to push up the 3 tabs to remove the grille How to replace the grille 1 Close the flaps 2 Reinstall the grille into the lower part while aligning its tabs on the upper part Fig 18 Insert the tabs in the slots and push the lower part of the grille back into position 3 Press at each of the 4 tabs to completely close ...

Page 9: ...iagram 2 Provide a power outlet to be used exclusively for each unit with a power supply disconnect and cir cuit breaker for overcurrent protection provided in the exclusive line 3 To prevent possible hazard due to insulation failure the unit must be grounded 4 Each wiring connection must be done tightly and in accordance with the wiring system diagram Wrong wiring may cause the unit to misoperate...

Page 10: ...g 23 CAUTION Be sure to connect the power supply line to the outdoor unit as shown in the wiring diagram The indoor unit draws its power from the outdoor unit WIRING SYSTEM DIAGRAM WARNING Be sure to comply with local codes on running the wire from the outdoor unit to the indoor unit size of wire and wiring method etc Each wire must be firmly connected No wire should be allowed to touch refrigeran...

Page 11: ...n the plate Next attach the conduit connector to the earth plate by replacing and tightening the lock nut Figs 26c and 26d Then re attach the earth plate to the electrical component box with the 2 screws h Give some play to the inter unit wiring from the out door unit to the corresponding terminals on the termi nal base See Wiring System Diagram on page 10 i Fix cover plate and cover plate and bac...

Page 12: ... for the terminal screw 4 Shape the loop wire properly place it on the terminal plate and fix it securely with the removed terminal screw using a screwdriver For stranded wiring 1 Cut the wire end with a cutting pliers then strip the insu lation to expose the stranded wiring about 3 8 in 10 mm and tightly twist the wire ends Figs 30 and 31 2 Using a screwdriver remove the terminal screw s on the t...

Page 13: ...l Adjust the indoor unit so it is securely seated on the rear panel Fig 36 3 Carefully bend the tubing if necessary to run along the wall in the direction of the outdoor unit and then tape as far as the fittings See Caution on page 17 The drain hose should come straight down the wall to a point where water runoff won t stain the wall 4 Connect the refrigerant tubing to the outdoor unit After perfo...

Page 14: ... the hose c If the drain hose will run in the room insulate the hose with insulation so that chilled condensation will not damage furniture or floors Fig 40 Foamed polyethylene or its equivalent is recom mended WARNING Risk of Electric Shock Do not supply power to the unit or operate it until all tubing and wiring to the outside unit are completed Condensation Insulation material locally purchased...

Page 15: ...Control line Sheath cable Power line Conduit Plug Conduit plate Power supply Conduit Fig 41 Examples of Incorrect Wiring The following are examples of improper wiring that result in system misoperation You should confirm that you have wired the units correctly before beginning the test run CAUTION Problem 1 Short circuit will occur after approx 3 minutes and the power circuit fuse blows Problem 3 ...

Page 16: ...ld be done carefully to make a good flare Fig 42 When reaming hold the tube end downward and be sure that no copper scraps fall into the tube Fig 43 c Remove the flare nut from the unit and be sure to mount it on the copper tube d Make a flare at the end of copper tube with a flare tool Fig 44 Use RIGID or equivalent A good flare should have the following characteristics inside surface is glossy a...

Page 17: ...rlap half of each previous tape turn Fig 50 c Clamp tubing bundle to wall using 1 clamp approx every 47 in 120 cm Do not wind the armoring tape too tightly since this will decrease the heat insulation effect Also be sure the conden sation drain hose splits away from the bundle and drips clear of the unit and the tubing 5 7 Finishing the Installation After finishing insulating and taping over the t...

Page 18: ...n both narrow and wide tubes 3 Connect a vacuum pump and a manifold valve with pres sure gauges to the service port on the wide tube service valve Fig 52 4 With the Lo knob of the manifold valve open run the vacuum pump The operation time for the vacuum pump varies with tubing length and the capacity of the pump The following table shows the amount of time for evacua tion Table 6 The required time...

Page 19: ... release the pressure Then remove the hose 11 Replace the bonnet and flare nut on the wide tube service port and fasten the flare nut securely with an adjustable wrench or box wrench Next mount the valve cap and tighten it with a torque wrench the cap needs to be tightened with the torque of 170 lbs in 200 kg cm This process is very important to prevent gas from leaking from the system 12 Test run...

Page 20: ...g operation during with the switch at the TEST posi tion is unaffected by the room temperature 5 After stopping the test run turn the operation selector switch of indoor unit to the OFF position once then move to ON position 6 Press the ON OFF button on the remote control unit to stop the air conditioner If the unit does not operate and the OPERATION lamp on the unit is blinking after going throug...

Page 21: ...g Air purging with a vacuum pump CLOSED Valve cap Stem O ring The service port on the wide tube service valve uses a Schrader core valve to access the refrigerant system Therefore be sure to use a hose connector which has a push pin inside Fig 55 PUSH Hose with push pin Service valve Fig 55 Basic Function of the Service Valves The basic function of the service valves are given in Table 7 below Tab...

Page 22: ...l it from the holder When using the remote control unit Point the transmission portion of the remote control unit at the receiver area of the indoor unit when operating the remote control unit and during operation of the air conditioner Do not place objects that may block the trans mitted signals between the receiver and the remote control unit When mounting the remote control unit to prevent thef...

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