Intesity IDIC-024KF-3, IDIC-024KC-3, IDIC-048KC-3, IDIC-036KF-3, IDIC-060KF-3 Installation Instructions Manual

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IDIC-024KF-3 - IDIC-024KC-3 / IDIC-036KF-3 - IDIC-036KC-3, IDIC-048KF-3 - IDIC-048KC-3 / IDIC-060KF-3 - IDIC-060KC-3.

INSTALLATION INSTRUCIONS

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MAN-I-IDC-1214

SPLIT SYSTEM HEAT PUMP & AIR CONDITIONER

2, 3, 4 Y 5 TR.

FEATURING R-410A REFRIGERANT

18 SEER

TABLE OF CONTENTS

1.0 SAFETY..................................................................................................................3

1.1 INSPECTION.................

................................................................................

...4

1.2 LIMITATIONS..........................................................

..............................

............4

2.0 GENERAL..............................................................................................................4

3.0 UNIT INSTALLATION............................................................................................6

3.1 LOCATION.......................................................................................................6

3.2 GROUND INSTALLATION...............................................................................6

3.3 ROOF INSTALLATION.............................

........................................................

3.4 UNIT PLACEMENT..........................................................................................6

3.5 UNIT LOCATION CONSIDERATIONS............................................................7

3.6 UNIT MOUNTING............................................................................................8

3.7 FACTORY-PREFERRED TIE-DOWN METHOD.............................................9

3.8 PRECAUTIONS DURING LINE INSTALLATION.............................................9

3.9 PRECAUTIONS DURING BRAZING OF LINES...

..........................................11

3.10 PRECAUTIONS DURING BRAZING SERVICE VALVE...............................11

4.0 INTERCONNECTING TUBING............................................................................12

4.1 SUCTION AND LIQUID LINES .....................................................................12

4.2 MAXIMUM LENGTH OF LINES ....................................................................13

4.3 VERTICAL LIFT ............................................................................................13

5.0 EVACUATION......................................................................................................13

6.0 ELECTRICAL CONNECTIONS...........................................................................14

6.1 GENERAL INFORMATION & GROUNDING ............

...............................

......14

6.2 FIELD CONNECTIONS POWER WIRING ..............................

......................

6.3 REMOVING THE TOP PANEL AND MOTOR................................................15

7.0 CHECKING REFRIGERANT CHARGE .............................................................16

7.1 CHARGING BY LIQUID PRESSURE............................................................16

7.2 CHARGING BY WEIGHT ..............................................................................16

7.3 FINAL LEAK TESTING .................................................................................16

8.0 SYSTEM OPERATION........................................................................................18

8.1 COMPRESSOR CRANKCASE HEATER (CCH)...........................................19

8.2 REVERSING VALVE INTRODUCTION .......................................................20

8.3 PROTECTION FUNCTION INTRODUCTION...............................................20

8.4 SENSORS.....................................................................................................20

8.5 ERROR CODE TABLE..................................................................................24

8.6 PARAMETER POINT CHECK TABLE...........................................................25

9.0 WARRANTY.........................................................................................................26

9.1 MAINTENANCE.............................................................................................26

10.0 WIRING DIAGRAM............................................................................................26

10.1 CONTROL WIRING FOR UNITS.................................................................26

WARNING

These instructions are intended as an aid to qualified licensed service personnel for proper installation, adjustment and operation of this unit. Read these instructions thoroughly before attempting installation or operation. Failure to follow these instructions may result in improper installation, adjustment, service or maintenance possibly resulting in fire, electrical shock, property damage, personal injury or death.

RECOGNIZE THIS SYMBOL AS AN INDICATION OF IMPORTANT SAFETY INFORMATION

DO NOT DESTROY THIS MANUAL

Please read carefully and keep in a safe place for future reference by a serviceman.

1.0 SAFETY

This is a safety alert symbol. When you see this symbol on labels or in manuals, be alert to the potential for personal injury.

Understand and pay particular attention to the signal words DANGER, WARNING, or CAUTION.

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

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

CAUTION indicates a potentially hazardous situation, which, if not avoided may result in minor or moderate injury. It is also used to alert against unsafe practices and hazards involving only property damage.

This is an attention alert symbol. When you see this symbol on labels or in manuals, be alert to the potential for personal injury.

This document is customer property and is to remain with this unit. These instructions do not cover all the different variations of systems nor does it provide for every possible contingency to be met in connection with installation. All phases of this installation must comply with NATIONAL, STATE, AND LOCAL CODES. If additional information is required please contact your local distributor.

WARNING

Improper installation may create a condition where the operation of the product could cause personal injury or property damage. Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual for assistance or for additional information, consult a qualified contractor, installer or service agency.

CAUTION

This product must be installed in strict compliance with the installation instructions and any applicable local, state, and national codes including, but not limited to building, electrical, and mechanical codes.

WARNING

FIRE OR ELECTRICAL HAZARD Failure to follow the safety warnings exactly could result in serious injury, death or property damage. A fire or electrical hazard may result causing property damage, personal injury or loss of life.

CAUTION

If using existing refrigerant lines make certain that all joints are brazed, not soldered.

CAUTION

Scroll compressor dome temperatures may be hot. Do not touch the top of compressor; it may cause minor to severe burning.

The outdoor units are designed to be connected to a matching indoor coil with braze connect lines. Units are factory charged with refrigerant for a matching indoor coil plus 15 feet of field supplied lines.

Matching indoor coils are available with a thermostatic expansion valve or an orifice for the most common usage. The orifice size and/or refrigerant charge may need to be changed for some indoor-outdoor unit combinations, elevation differences or total line lengths.

2.0 GENERAL

1.Limitations for the indoor unit, coil and appropriate accessories must also be observed.

2.The outdoor unit must not be installed with any duct work in the air stream. The outdoor fan is the propeller type and is not designed to operate against any additional external static pressure.

3.The maximum and minimum conditions for operation must be observed to assure a system that will give maximum performance with minimum service.

4.This unit is not designed to operate with a low ambient kit. Do not modify the control system to operate with any kind of Iow ambient kit.

5.The maximum allowable line length for this product is 100 feet.

1.2 LIMITATIONS

The unit should be installed in accordance with all National, State, and Local Safety Codes and the limitations listed below:

As soon as a unit is received, it should be inspected for possible damage during transit. If damage is evident, the extent of the damage should be noted on the carrier's delivery receipt. A separate request for inspection by the carrier's agent should be made in writing. See Local distributor for more information.

1.1 INSPECTION

Requirements For Installing/Servicing R410A Equipment Gauge sets, hoses, refrigerant containers, and recovery system must be designed to handle the POE or PVE type oils. Manifold sets should be 800 PSIG high side and 250 PSIG low side with 550 PSIG Iow side restart. All hoses must have a 700 PSIG service pressure rating. Leak detectors should be designed to detect R410A. Recovery equipment (including refrigerant recovery containers) must be specifi- cally designed to handle R410A.

Do not use an R-22 TXV.

Good Refrigeration practices require the installation of a field supplied liquid line drier, as shown in Fig.1.

Fig.1 Filter-Drier installation

LIQUID-LINE FILTER-DRIER

It will be more convenient to open

the Service valve after removing

the Underside Clapboard.

NOTE



LARGE SERVICE VALVE

SMALL SERVICE VALVE

FIELD SUPPLIED AND INSTALLED

DIMENSIONAL DATA

"H" in. [mm] "W" in. [mm]

"L" in. [mm]

Liquid in.

Suction in.

29-1/8[740] 29-1/8[740]

29-1/8[740] 29-1/8[740] 29-1/8[740] 29-1/8[740]

MODEL SIZE

Dimensions (Inches)

Refrigerant Connection

Service Valve Size

24-15/16[633]

3/8 3/8

3/4 3/4

7/8 7/8

24-15/16[633]

33-3/16[843] 33-3/16[843]

AC HP

24 24

FIG.2 DIMENSIONS

SUCTION LINE CONNECTION

CONTROL WIRING 7/8” (22.2mm)

KNOCKOUT 1-11/32” (34.5mm)

LIQUID LINE CONNECTION

SERVICE FITTING

POWER WIRING SEE DETAIL A

DETAIL A

HOLE 1-3/32” (27.8mm)

NOTE: GRILL APPEARANCE

MAY VARY.

NOTES: 1 AC: Air Condition er ; HP: Heat Pump;

AIR DISCHARGE: ALLOW 60”

MINIMUM CLEARANCE.

SERVICE ACCESS

ALLOW 24” CLEARANCE

AIR INLETS

LOUVERED PANELS ALLOW 18” MINIMUM CLEARANCE

3.0 UNIT INSTALLATION

3.1 LOCATION

Before starting the installation, select and check the suitability of the location for both the indoor and outdoor unit. Observe all limitations and clearance requirements. The outdoor unit must have sufficient clearance for air entrance to the condenser coil, for air discharge and for service access. See Fig.2

NOTE

For multiple unit installations, units must be spaced a minimum of 18 inches apart. (Coil face to coil face.)

If the unit is to be installed on a hot sun exposed roof or a black-topped ground area, the unit should be raised sufficiently above the roof or ground to avoid taking the accumulated layer of hot air into the outdoor unit.

Provide an adequate structural support.

WARNING

The outdoor unit should not be installed in an area where mud or ice could cause personal injury or system damage.

Elevate the unit sufficiently to prevent any blockage of the air entrances by snow in areas where there will be snow accumulation. Check the local weather bureau for the expected snow accumulation in your area. Isolate the unit from rain gutters to avoid any possible wash out of the foundation.

When installing units on a roof, the structure must be capable of supporting the total weight of the unit, including a padded frame unit, rails, etc., which should be used to minimize the transmission of sound or vibration into the conditioned space.

3.3 ROOF INSTALLATION

3.4 UNIT PLACEMENT

1. Provide a base in the pre-determined location.

2. Remove the shipping carton and inspect for possible damage.

3. Compressor tie-down nuts should remain tightened.

4. Position the unit on the base provided.

The unit may be installed at ground level on a solid base that will not shift or settle, causing strain on the refrigerant lines and possible leaks. Maintain the clearances shown in Fig.2 and install the unit in a level position.

3.2 GROUND INSTALLATION

Normal operating sound levels may be objectionable if the unit is placed directly under windows of certain rooms (bedrooms, study, etc.). Top of unit discharge area must be unrestricted for at least 60 inches above the unit.

CAUTION

This system uses R410A refrigerant which operates at higher pressure than R-22. No other refrigerant may be used in this system. Gauge sets, hoses, refrigerant containers, and recovery system must be designed to handle R410A. If you are unsure, consult the equipment manufacturer.

The outdoor unit must be connected to the indoor coil using field supplied refrigerant grade copper tubing that is internally clean and dry. Units should be installed only with the tubing sizes for approved system combinations. The refrigerant charge shown in the nameplate is for standard size interconnecting liquid line lengths up to 15 feet.

NOTE

Using a larger than specified line size could result in oil return problems. Using a too small line will result in loss of capacity and other problems caused by insufficient refrigerant flow. Slope horizontal suction lines at least 1" every 20 feet toward the outdoor unit to facilitate proper oil return.

3.5 Unit Location Considerations

• Ensure the top discharge area is unrestricted for at least 5 feet above the unlt.

• Provide at least 3 feet clearance in front of the control box (access panels) and any other side requiring service.

• Do not locate close to bedrooms as operational sounds may be objectionable.

• Avoid locations near windows and similar areas where condensation and freezing defrost vapor can annoy a customer.

• Position the outdoor unit a minimum of 12" from any wall or surrounding shrubbery to ensure adequate airflow.

• Outdoor unit location must be far enough away from any structure to prevent excess roof runoff water or Icicles from ralling directly on the unit.

• Position the outdoor unit a minimum of 12" from any wall or surrounding shrubbery to ensure adequate airflow.

• Outdoor unit location must be far enough away from any structure to prevent excess roof runoff water or icides from ralling directly on the unit.

Avoid install near bedrooms

Min 5 feet unrestricted

Min 3 feet unrestricted

Min 12" to wall

Min 20 inches to shrubbery

Min 12" to shrubbery

Access panel

1. suggested Locations for Best Reliability

Fig. 3 suggested Locations for Best Reliability

3.6 UNIT MOUNTING

2 . If elevating a unit on a flat roof , use 4”× 4”(or equivalent) stringers

positioned to distribute unit weight evenly and prevent noise and vibration (See Fig.3).

NOTE:Do not block drain openings shown in Fig.5.

3. If unit must be elevated because of anticipated snow fall, secure unit and elevating stand such that unit and/or stand will not tip over or fall off.

If elevating the heat pump, either on a flat roof or on a slab, observe the following guidelines.

1. The base pan provided elevates the heat pump 2” above the base pad.

NOTE: To tie down unit, see 3.6.

BASE PAD (CONCRETE OR OTHER SUITABLE MATERIAL)

Note: It is recommended that these precautions be taken for units being installed in areas where snow accumulation and prolonged below-freezing temperatures occur.

• Units should be elevated 3-12 inches above the pad or rooftop, depending on local weather. This additional height will allow drainage of snow and ice melted durIng defrost cycle prior to its refreezlng. Ensure that drain holes in unit base pan are not obstructed, preventing drainage of defrost water.

• If possible, avoid locations that are likely to accumulate snow drifts. if not possible, a snow drift barrier should be installed around the unit to prevent a build-up of snow on the sides of the unit.

Min 12"

Snow barrier

3- 12" Elevation

Snow legs

pad

2. Cold Climate Considerations (Heat Pump Only)

Fig.4 Cold Climate Considerations (Heat Pump Only)

BASE PAN (BOTTOM VIEW) DO NOT OBSTRUCT DRAIN HOLES (SHADED)

ELEVATION ABOVE ANTICIPATED SNOW IS NECESSARY

Fig.5 RECOMMENDED ELEVATED INSTALLATION

1. Install the lines with as few bends as possible. Care must be taken not to damage the couplings or kink the tubing. Use clean hard drawn copper tubing where no appreciable amount of bending around obstruction is necessary, if soft copper must be used, care must be taken to avoid sharp bends which may cause a restriction.

2. The lines should be installed so that they will not obstruct service access to the coil, air handling system or filter.

3.8 PRECAUTIONS DURING LINE INSTALLATION

3.7 FACTORY-PREFERRED TIE-DOWN METHOD

Step 3: Using field supplied L-shaped bracket to locate holes on concrete and drill pilot holes which is at least 1/4” deeper than fastener being used.

IMPORTANT

Self drilling screws to base pan should not exceed 3/8” long to avoid damaging coil.

Step 4: Using conventional practices to install brackets, tighten concrete fasteners and self-tapping screws (See Fig.6).

NOTE

: 1. One bracket for each side. For extra stability, 2 brackets for each side.

2. Do not over-tighten the concrete fastener to avoid weakening the concrete.

Step 1: Prior to installing clear pad of debris.

IMPORTANT

Then cement pad must meet local codes and must be the proper thickness to accommodate fasteners.

Step 2: Center and level unit onto pad.

IMPORTANT NOTE:

These instructions are intended to provide a method to tie-down system to cement slab as a securing procedure for high wind areas. It is recommended to check Local Codes for tie-down methods and protocols.

REQUIRED PARTS LIST

SEE DETAIL B

#7 X 3/8” Self Tapping Screws (Don’t Exceed 3/8” long)

1/4”  1-1/2” Hex Washer Head Concrete Screws (3/16” Pilot Hole Needed. Pilot Hole Should Be1/4” Deeper Than The Fastener Embedment)

Fig.6 PREFERRED TIE-DOWN METHOD



DETAIL B

Brackets: 2” width, 1/16” thickness, height as required. Available from distributor or in market place.

The dimension see FIG.2

3. Care must also be taken to isolate the refrigerant lines to minimize noise transmis sion from the equipment to the structure.

4. The suction line must be insulated. Tape and suspend the refrigerant lines as shown. DO NOT allow tube metal-to-metal contact. See Fig.7.

5. Use PVC piping as a conduit for all underground installations as shown in Fig.8. Buried lines should be kept as short as possible to minimize the build up of liquid refrigerant in the suction line during long periods of shutdown.

6. Pack a sealing material such as perma gum around refrigerant lines where they penetrate a wall to reduce vibration and to retain some flexibility.

Insu la ted Liquid Line

Tape

Shee t Me tal Hanger

opt iona l

Sug gest ed

Incorrect

Fig.7 Tubing Hanger

Fig.8 Underground Installation

Insu la ted Suction Line

Fig.9

Typical Installation

TO INDO OR BLOW ER

TO POWE R SUPPLY

TO COIL

WEATHERPR OOF DISCONNECT SWIT CH

Seal o pening(s) with perm agum or equivalen t

24V co ntrol signal

NOTE :All outdoor wiri ng m ust be weather proo f

All outdoor unit and evaporator coil connections are copper-to-copper and should be brazed with a phosphorous-copper alloy material such as Silfos-5 or equivalent. DO NOT use soft solder. The outdoor units have reusable service valves on both the liquid and suction connections. The total system refrigerant charge is retained within the outdoor unit during shipping and installation. The reusable service valves are provided to evacuate and charge per this instruction. Serious service problems can be avoided by taking adequate precautions to assure an internally clean and dry system.

3.9 PRECAUTIONS DURING BRAZING OF LINES

CAUTION

Dry nitrogen should always be supplied through the tubing while it is being brazed, because the temperature required is high enough to cause oxidation of the copper unless an inert atmosphere is provide. The flow of dry nitrogen should continue until the joint has cooled. Always use a pressure regulator and safety valve to insure that only low pressure dry nitrogen is introduced into the tubing.Only a small flow is necessary to displace air and prevent oxidation.

Precautions should be taken to prevent heat damage to service valve by wrapping a wet rag around it as shown in Fig.10. Also, protect all painted surfaces, insulation, during brazing. After brazing cool joint with wet rag.

3.10 PRECAUTIONS DURING BRAZING SERVICE VALVE

The valve can be opened by removing the plunger cap and fully inserting a hex wrench into the stem and backing out counter-clockwise until valve stem just touches the chamfered retaining wall.

1. Remove the cap and Schrader core from both the liquid and suction service valve service ports at the outdoor unit. Connect Iow pressure nitrogen to the liquid line service port.

Connect the refrigerant lines using the following procedure:

2. Braze the liquid line to the liquid valve at the outdoor unit. Be sure to wrap the valve body with a wet rag. Allow the nitrogen to continue flowing. Refer to the Tabular Data Sheet for proper liquid line sizing.

3. Carefully remove the rubber plugs from the evaporator liquid and suction connections at the indoor coil.

Fig.10 Heat Protection

service valve

wet rag

4. Braze the liquid line to the evaporator liquid connection. Nitrogen should be flowing through the evaporator coil.

5. Slide the plastic cap away from the suction connection at the indoor coil. Braze the suction line to the evaporator suction connection. Refer to the Table 1 for proper suction line sizing.

6. Protect the suction valve with a wet rag and braze the suction line connection to the outdoor unit. The nitrogen flow should be exiting the system from the suction service port connection. After this connection has cooled, remove the nitrogen source from the liquid fitting service port.

7. Replace the Schrader core in the liquid and suction valves.

8. Leak test all refrigerant piping connections including the service port flare caps to be

sure they are leak tight. DO NOT OVER TIGHTEN (between 40 and 60 inch -lbs.

maximum).

9. Evacuate the suction line, evaporator, and the liquid line, to 350 microns or less.

Table 1: Recommended Liquid and Suction Tube Diameters (ln.)

MODEL SIZE

LIQUID

SUCTION

Tube Diameter

24 3/8 3/4

36 3/8 3/4

48 3/8

60 3/8 7/8

7/8

10. Replace cap on service ports. Do not remove the flare caps from the service ports except when necessary for servicing the system.

11. Release the refrigerant charge into the system. Open both the liquid and suction valves by removing the plunger cap and with an hex wrench back out counter

-clockwise until valve stem just touches the chamfered retaining wall.

12. Replace plunger cap finger tight, then tighten an additional 1/12 turn (1/2 hex flat). Cap must be replaced to prevent leaks.

WARNING

Never attempt to repair any brazed connections while the system is under pressure. Personal injury could result.

See "System Charge" section for checking and recording system charge.

4.0 INTERCONNECTING TUBING

4.1 SUCTION AND LIQUID LINES

Keep all lines sealed until connection is made. Make connections at the indoor coil first. Refer to Li ne Size Information in Ta bles 2 and 3 for correct size and multipliers to be used to determine capacity for various suction line diameters and lengths of run. The losses due to the lines being exposed to outdoor conditions are not included.

The factory refrigerant charge in the outdoor unit is sufficient for 15 feet of standard size interconnecting liquid line. Calculate actual charge required with installed liquid line size and length as below.

5/16” ± .4 oz. per foot 3/8” ± .6 oz . per foot 1/2” ± 1.2 oz . per foot

It will be necessary to evacuate the system to 350 microns or less. If a leak is suspected, leak test with dry nitrogen to locate the leak. Repair the leak and test again. To verify that the system has no leaks, simply close the valve to the vacuum pump suction to isolate the pump and hold the system under vacuum. Watch the micron gauge for a few minutes. If the micron gauge indicates a steady and continuous rise, it's an indication of a leak. If the gauge shows a rise, then levels off after a few minutes and remains fairly constant, its an indication that the system is leak free but still contains moisture and may require further evacuation if the reading is above 350 microns.

5.0 EVACUATION

4.2 MAXIMUM LENGTH OF LINES

T h e maximum length of interconnecting line is 100 feet . Always use the shortest length possible with a minimu m number of bends.

NOTE

: Excessively long refrigerant lines cause loss of equipment capacity.

4.3 VERTICAL LIFT

Keep the vertical lift to a minimum. Use the following guidelines when installing the unit:

1. DO NOT exceed the vertical lift as indicated on Table 3.

2. It is recommended to use the smallest liquid line size permitted to minimize sys t

em charge which will maximize compressor reliability.

3. Table 3

may be used for sizing horizontal runs.

TABLE 2: SUCTION LINE LENGTH/SIZE VS CAPACITY MULTIPLIER(R410A)

2 Ton 3 Ton 4 Ton 5 Ton

3/4" O.D. 3/4" O.D. 7/8" O.D. 7/8" O.D.

5/8 Opt. 5/8 Opt. 3/4 Opt. 1 1/8 Opt.

3/4* Std. 3/4* Std. 7/8* Std. 7/8* Std.

Optional 1.00 1.00 1.00 1.00

Standard 1.00 1.00 1.00 0.99

Optional 0.97 0.97 0.98 0.99

Standard 0.98 0.99 0.98 0.98

Optional 0.94 0.94 0.95 0.98

Standard 0.95 0.97 0.97 0.94

Suction Line Connection Size

Model Size

Suction Line Run - Feet

NOTES: * Standard size Using suction line larger than shown in chart will result in poor oil return and is not recommended.

25'

50'

100'

Optional 0.90 0.90 0.92 0.97

Standard 0.92 0.96 0.96 0.90

150'

LINE SIZING

6.1 GENERAL INFORMATION & GROUNDING

Check the electrical supply to be sure that it meets the values specified on the unit nameplate and wiring label. Power wiring, control (Iow voltage) wiring, disconnect switches and over current protection must be supplied by the installer. Wire size should be sized per requirements.

CAUTION

All field wiring must USE COPPER CONDUCTORS ONLY and be in accordance with Local, National Fire, Safety & Electrical Codes. This unit must be grounded with a separate ground wire in accordance with the above codes.

The complete connection diagram and schematic wiring label is located on the inside surface of the unit service access panel and this instruction.

1. Install the proper size weatherproof disconnect switch outdoors and within sight of the unit.

2. Remove the screws at the side of the corner panel. Slide corner panel down and remove from unit. See Fig. 9.

3. Run power wiring from the disconnect switch to the unit.

4. Route wires from disconnect through power wiring opening provided and into the unit control box.

5. Install the proper size time-delay fuses or circuit breaker, and make the power supply connections.

6. Energize the crankcase heater if equipped to save time by preheating the compres sor oil while the remaining installation is completed.

6.2 FIELD CONNECTIONS POWER WIRING

6.0 ELECTRICAL CONNECTIONS

NOTE: When changing the motor, remove top cover first.

TABLE 3: LIQUID LINE SIZE (R410A)

25 50 75 100 125 150

1/4 23 N/A N/A N/A N/A N/A 5/16 25 36 29 23 16 9 3/8* 25 50 60 60 40 30

Rotary 3/8* 25 30 30 24

5/16 25 50 37 22 7 N/A 3/8* 25 50 60 60 40 30

3/8* 25 46 38 30 22 15 1/2 25 50 56 55 40 30 3/8* 25 50 56 44 32 20 1/2 25 50 60 60 40 30

Liquid Line Size

Outdoor unit above or below indoor coil

3/8"

3 Ton

Total Equivalent Length - Feet

Model Size

Line Size

Connection And

Line Size

(Inch O.D.)

Maximum Vertical Separation - Feet

Line Size

Connection Size

(Inch O.D.)

Compressor

Type

Scroll

2 Ton 3/8"

NOTES: * Standard line size N/A Application not recommended.

Scroll

4 Ton

5 Ton

3/8"

N/A N/A

1/2” nut

5/16” nuts

Fig.12 COVER AND FAN

6.3 REMOVING THE TOP PANEL AND MOTOR

When motor requires changing follow the steps below: Step 1: Go into electrical panel, disconnect motor power lines.

IMPORTANT NOTE

Disconnect main power to unit. Severe burns and electrical shock will occur if you do not disconnect main power. Step 2: Remove cover (be careful of motor wires) Step 3: Be sure to place fan cover unit on the ground as indicated in Fig. 12

IMPROTANT NOTE

Do not place or lean fan blades on ground or against surface. Step 4: Remove fan motor by removing 5/16” nuts from cover. Step 5: Remove fan blade from motor by removing 1/2” nut and place fan on the ground. Step 6: Reverse removal process to reinstall the fan and motor.

IMPROTANT NOTE

When connecting motor wires be sure to check motor direction.

Damage will occur to condenser unit if you remove fan nuts prior to cover removal.

NOTE:

Fig.11 Typical Field Wiring

CORNER PANEL

HIGH VOLTAGE WIRING

LOW VOLTAGE WIRING

7.2 CHARGING BY WEIGHT

7.3 FINAL LEAK TESTING

After the unit has been properly evacuated and charged, a halogen leak detector should be used to detect leaks in the system. All piping within the condensing unit, evaporator, and interconnec ting tubing should be checked for leaks. If a leak is detected, the refrigerant should be recovered before repairing the leak. The Clean Air Act prohibits releasing refrigerant into the atmosphere .

Charge for all systems should be checked against the Charging Chart inside the access corner panel or Charging by weight.

IMPORTANT:Do not operate the compressor without charge in system. Additio n of R - 410A will raise pressures (suction, liquid and discharge).

7.1 CHARGING BY LIQUID PRESSURE

7.0 CHECKING REFRIGERANT CHARGE

In order to properly charge the system, the following conditions must be met:

1) Outdoor temperature above 60°F.

2) Indoor temperature between 70°F to 100°F.

3) Installation must be complete with brazed joints and drier visually inspected.

4) The unit electrical installation must be checked and unit powered for one (I) hour if crank case heater is used or five (5) minutes if no crankcase heater is used.

Follow these steps:

1. Run in Force cooling mode(click the FORCE button in cooling mode )at least 20 minutes.

2. Measure OUTDOOR AMBIENT TEMPERATURE within 6 inches of coil.

3. Measure SUCTION LINE PRESSURE AND TEMPERATURE.

4.According to the superheat of suction line, confirm that the TXV is working

properly(Usually the superheat is between 10 to 15). If not, it should be adjusted.

5. Find the TARGET LIQUID PRESSURE at the intersection between the SUCTION LINE PRESSURE and the OUTDOOR AMBIENT TEMPERATURE, if falls between rows or columns then estimate the TARGET LIQUID PRESSURE or SUCTION LINE PRESSURE falls between rows or columns then estimate the TARGET LIQUID PRESSURE between the rows and columns.

5. Compare the measured LIQUID LINE PRESSURE to the TARGET LIQUID PRESSURE, add charge to raise the pressure or recover charge to lower it.

6. After running unit for 10 minutes if the SUCTION LINE PRESSURE changes, go back to step 2 otherwise remove test equipment and cover the valves.

For a new installation,evacuation of interconnecting tubing and indoor coil is adequate; otherwise,evacuate the entire system. The factory refrigerant charge in the outdoor unit is sufficient for 15 feet of standard size interconnecting liquid line. Calculate actual charge required with installed liquid line size and lengthplease see 4.1 of instruction.

With an accurate scale (+/- 1 oz.) adjust charge difference between that shown on the unit data plate and that calculated for the new system Installation. if the entire system has been evacuated, add the total calculated charge.

charging: weigh-In Method

weigh-In Method can be used for the Initial installation, or anytime a system charge is being replaced. weigh-In Method can also be used when power is not available to the equipment site or operating conditions (indoor/Outdoor temperatures) are not In range to verify with the subcooling charging method.

Note: The only mode aperoved for setting validating system charge Is using Charging Mode-cooling. Charging Mode-cooling is a variable speed test mode found in the 950 comfort control Technician Menu. Outdoor Temperature must be between 55

F and

120OF with Indoor Temperature kept between 70OF and 80OF.

Table 17. Heat Pumps

D C A

Model

charge

adder for

Indoor Coil

charge

multiplier for

interconnecting

refrigerant tube

length

024 7 lb. 6 oz. 6 oz. 0.6 oz/f t

036 8 Ib. 3 oz. 8 oz. 0.6 oz/ft

037 9 lb. 8 oz. 12 oz. 0.6 oz/ft

048 9 lb. 13 oz. 13 oz. 0.6 oz/ft

049 10 lb. 12 oz. 15 oz. 0.6 oz/ft

060 11 lb. 14 oz. 1 lb., 2 oz. 0.6 oz/ft

Factory Charge

Table 18. Air Conditioners

D C A

Model

charge

adder for

Indoor Coil

charge

multiplier for

interconnecting

refrigerant tube

length

024 7 lb. 6 oz. 6 oz. 0.6 oz/f t

036 7 Ib. 14 oz. 7 oz. 0.6 oz/ft

048 11 lb. 1 oz. 1 lb., 0 oz. 0.6 oz/ft

060 11 lb. 14 oz. 0.6 oz/ft

Factory

Charge

Table 19. New Installations — calculating charge using the weigh-In method

1. Measure in feet the distance between the outdoor unit and the indoor unit and record on Line

1. Include the entire length of the line from the servIce valve to the IDU.

2. Enter the charge multiplier from column D.

3. Muitply the total length of refrigerant tubing (Line

1) tImes the value on step 2. Record the result on Line 3 of the worksheet.

4. Locate the outdoor equipment size in column A. Record the value shown In column c of Table 16 for Heat Pumps or Table 17 for Air conditioners.

5. Add the values from step 3 and step 4 and record the resulting value. This Is the amount of refrigerant to weigh-in prior to opening the service valves.

New Installation weigh-In Method worksheet

1. Line Length (ft)

2. value from Column D x

3. Step1 x Step2 =

4. charge Adder (column C) +

5. Refrlgerant(Steps 3+4) =

Table 20. Sealed-System Repairs — calculating charge using the weigh-In method.

1. Meisure in feet the distance between the outdoor unit and the indoor unit and record on Line 1 Include the entire length of the line from the service valve to the IDU.

2. Enter the charge multiplIer from cotumn D.

3. MultIply the total length of refhgerant tubing (Line 1) times the value on Line 2. Record the result on Line 3 of the worksheet.

4. Locate the outdoor equipment size in column A. Record the value shown in column C of Table 16 for Heat Pumps or Table 17 for Air conditioners.

5. Record the value in column B to Line 5 of the worksheet.

6. Add the values from step 3, step 4, and step 5 and record the resulting value on Line 6. ThIs is the amount of refrigerant to weigh-in.

New Installation weigh-In Method worksheet

1. Line Length (ft)

2. value from ColumnD x

3. Step 1 x step 2 =

4. charge Adder (column C) +

5. Factory charge (column B) +

6. RefrIgerant (steps 3+4+5) =

1 lb., 0 oz.

8.0 SYSTEM OPERATION

1. Control logic description

2.Sensor description

This frequency conversion system adopts the exactly same control logic as that of common fixed frequency unit. Start-up demand signal is sent by wired controller or indoor unit and when outdoor unit receives the signal, it will start required mode according to demand. Start-up demand signal is the common 24V control signal. Compressor operating frequency is controlled by outdoor unit completely. To ensure stable and adequate power output, target control low pressure evaporating temperature Te when cooling and target control high pressure condensing temperature Tc when heating, control and adjust compressor PI according to control target demand. Meanwhile, Te and Tc target demand has the function of self-study according to compressor operating frequency, start/stop times so that to adjust power output autonomously ensure to well satisfy power demand load. It can choose the initial settings of Te and Tc according to dehumidification and high capacity demands by manually adjusting the dial code as well so that to satisfy relative demands.

A working T3 Sensor is required for:

 Operating protection (high temp./low temp.)  Outdoor fan control(cooling)  Heat pump onlyDefrost Heat pump only  Ambient temp forecast Cooling only

A working T4 Sensor is required forHeat pump only:

 Operating condition permission  Defrosting condition determination  Outdoor fan control(heating mode, Heat pump only)

A working T5 Sensor is required for:

 Protection(high temp./low temp.)  Outside EEV control valve Heat pump only

A working Tf Sensor is required for:  Module temp. protection(high temp.)

A working Pressure Transducer Sensor is required for:

 Operating frequency control  Outside EEV control valve Heat pump only  High pressure protection(heating mode, Heat pump only)  Low pressure protection(cooling mode)

2Defrost description

 Outdoor defrost control needs to measure T4 ambient temp. sensor and T3 coil temp. sensor. When difference value between the two sensors has satisfied some condition, defrosting will begin. Meanwhile, Meanwhile when operating in the condition of a low ambient temp.for a certain period or system high pressure side pressure is lower than a certain value, the system will enter defrosting mode.

Refrigerant migration during the off cycle can result in a noisy start up. Add a crankcase heater to minimize refrigeration migration, and to help eliminate any start up noise or bearing “wash out”. All heaters must be located on the lower half of the compressor shell. Its purpose is to drive refrigerant from the compressor shell during long off cycles, thus preventing damage to the compressor during start-up.

The crankcase heating start condition:

1.The crankcase heating start must meet two conditions: A. Outdoor temperature 37.4° F. B. Compressor stops working more than 3 hours.

2. Outdoor temperature 37.4° F and just connected to the power source.

The crankcase heating stop must meet condition:

Outdoor temperature 44.6° F or compressor start.

At initial start-up or after extended shutdown periods, make sure the heater is energized for at least 12 hours before the compressor is started. (Disconnect switch on and wall thermostat off.)

2Crankcase heating zone description

 Dial code SW5 Defrosting quit According to outdoor coil temp.T3 is up to 18and lasts for 1 min. Or defrosting time is up to 8 min.  Defrosting control choice Dial code SW5 can adjust and set the time that enters and quits defrosting In general, adjust dial code to ON can enhance the ability of defrosting.  Manual defrosting: The system must operate in heating mode. Enter into this mode after 5 min when system starts(It is suggest that stably running for 30 min, then enter ) Press Force button and hold for at least 6s to enter into defrosting. It is suggest that manual defrost time interval is 15min above.

 Start if crankcase heating zone can satisfy one of the 3 conditions,

1. First time to power on

2. In process of defrosting 3Compressor stops running for 4h and the outdoor ambient temp. T4 once lower than 50. Stop crankcase heating zone satisfy the following conditions Air discharge temp. T5113

 Defrosting enter The following 3 situations were determined to enter into defrosting: Outdoor coil temp. T31, and satisfy a certain correspondence of T4 ambient temp. When operating time accumulates to a certain value. Because of ambient temp. T4 time settings are different, when T4<-5 , cumulative time is 4h, when T4-5  and T4 4 , the cumulative time is 2h to determine.  When high pressure lasts low, the situation that high pressure saturation temperature lower than 28 lasts for 20 min determines to enter into defrosting.

Defrosting choice SW5-1 SW5-2 Remarks

Oper ating time

shorten q0%

Def r os ti ng time is

becoming longer

OFF Normal Normal Default OFF

Remarks

En te r in t o t h e

situation

Quit situation

OFF

1 2

8.1 COMPRESSOR CRANKCASE HEATER (CCH) (Heat pump only,optional)

8.3 PROTECTION FUNCTION INTRODUCTION (Heat pump only)

Sensor T3 (condenser pipe temperature) and T4 (outdoor ambient temperature)

When open-circuit, compressor, outdoor fan motor and reverse valve will be OFF. T3149°F,compressor stop working ; T3140°F,compressor start working. When T4 < 5 °F, compressor will stop.If the electrical heater kit is installed in the

indoor unit, the outdoor unit would provide a signal to drive up the heater.

When T4 > 10.4 °F, compressor will restart.

Discharge temperature protection (optional)

When discharge temp. > 275 °

F, the compressor will stop.

When discharge temp. < 194 °F, the compressor will restart.

High pressure protection (optional)

When high pressure > 638 PSIG, the compressor and outdoor fan motor will stop. When high pressure < 464 PSIG, the compressor and outdoor fan motor will restart (3 minutes delay necessary).

Low pressure protection

Low pressure < 21 PSIG, the compressor and outdoor fan motor will stop. Low pressure > 44 PSIG, the compressor and outdoor fan motor will restart

(3 minutes delay necessary). In stand-by status, the compressor will not start in low pressure protection. Within 30 mins, if 4 protection cycles occurs.The system will be locked. It will be restore after power cycle.

8.4 SENSORS

Start-up conditions of defrost mode:

When JUMP switch is set to “1”(See in Fig 11), the mode will start up in either of the two following conditions:

1. Compressor operating, when T4 is > 28.4 °F and T3 is < 32 °F last for 40 minutes;

2. Compressor operating, when T4 is < 28.4 °F and T3 is < 32 °F last for 50 minutes. When JUMP switch is set to “0”: Compressor operating, when T3 is < 32 °F last for 30 minutes.

Shut-down conditions of defrost mode:

The mode will shut down in either of the two following conditions:

1. The defrosted time lasting for 10 minutes;

2. T3 is  77 °F.

8.2 REVERSING VALVE INTRODUCTION (Heat pump only)

Reversing valve energizes at the heating conditions, and cut off at the cooling condition.

When the compressor has been running more than 10 minutes in the heating mode, holding down the FORCE button for at least 6 seconds, the systementers to the defrost mode, and then exits the defrost mode normally by itself.

1. T3(condenser pipe temperature) and T4(outdoor ambient temperature, heat pump only) see TABLE 4

2.T5(compressor discharge temperature) and Tf(IPM radiator fin temperature) see TABLE 5.

3. Pressure sensor(cooling only) see TABLE 6, Pressure sensor(heat pump only) see

TABLE 7.

TABLE 4

TABLE 5

TEMP F TEMP C

RESISTANCE k VOLTS DC TEMP F TEMP C

RESISTANCE

k

VOLTS DC

-5 -20.6 600.134 4.93 140 60 13.643 3.14

0 -17.8 505.551 4.92 145 62.8 12.359 3.03

5 -15 427.463 4.91 150 65.6 11.214 2.91

10 -12.2 362.739 4.89 155 68.3 10.227 2.8

15 -9.4 308.891 4.87 160 71.1 9.308 2.68

20 -6.7 265.398 4.85 165 73.9 8.485 2.56

25 -3.9 227.481 4.83 170 76.7 7.746 2.45

30 -1.1 195.601 4.8 175 79.4 7.105 2.34

35 1.7 168.707 4.77 180 82.2 6.504 2.23

40 4.4 146.695 4.74 185 85 5.963 2.13

45 7.2 127.258 4.7 190 87.8 5.474 2.02

50 10 110.707 4.66 195 90.6 5.032 1.92

55 12.8 96.572 4.61 200 93.3 4.645 1.83

60 15.6 84.465 4.56 205 96.1 4.28 1.73

65 18.3 74.411 4.51 210 98.9 3.949 1.64

70 21.1 65.408 4.45 215 101.7 3.648 1.56

75 23.9 57.634 4.39 220 104.4 3.383 1.48

80 26.7 50.904 4.32 225 107.2 3.133 1.4

85 29.4 45.258 4.24 230 110 2.904 1.32

90 32.2 40.152 4.16 235 112.8 2.694 1.25

95 35 35.699 4.08 240 115.6 2.503 1.18

100 37.8 31.807 3.99 245 118.3 2.334 1.12

105 40.6 28.398 3.89 250 121.1 2.172 1.06

110 43.3 25.506 3.8 255 123.9 2.024 1

115 46.1 22.861 3.7 260 126.7 1.888 0.95

120 48.9 20.529 3.59 265 129.4 1.767 0.9

125 51.7 18.47 3.48 270 132.2 1.651 0.85

130 54.4 16.708 3.37 275 135 1.544 0.8

135 57.2 15.085 3.26 280 137.8 1.446 0.76

TEMP F TEMP C

RESISTANCE k VOLTS DC TEMP F TEMP C RESISTANCE k VOLTS DC

-5 -20.6 107.732 4.65 90 32.2 7.225 2.36

0 -17.8 93.535 4.6 95 35 6.401 2.21

5 -15 79.521 4.54 100 37.8 5.683 2.07

10 -12.2 67.795 4.47 105 40.6 5.057 1.93

15 -9.4 57.948 4.39 110 43.3 4.509 1.79

20 -6.7 49.652 4.3 115 46.1 4.028 1.67

25 -3.9 42.645 4.21 120 48.9 3.606 1.55

30 -1.1 36.710 4.1 125 51.7 3.233 1.43

40 4.4 27.386 3.86 130 54.4 2.902 1.32

45 7.2 23.732 3.73 135 57.2 2.610 1.22

50 10 20.610 3.59 140 60 2.350 1.13

55 12.8 17.939 3.45 145 62.8 2.119 1.04

60 15.6 15.648 3.3 150 65.6 1.914 0.96

65 18.3 13.681 3.15 155 68.3 1.731 0.88

70 21.1 11.987 2.99 160 71.1 1.574 0.82

75 23.9 10.527 2.83 165 73.9 1.416 0.75

80 26.7 9.265 2.67 170 76.7 1.276 0.68

85 29.4 8.172 2.52

TABLE 6

Te Pe



MPa

1 1.04 -22 0.27 47 2

2 1.07 -21 0.28 48 2.02

3 1.1 -20 0.3 49 2.05

4 1.11 -19.5 0.31 50 2.08

5 1.13 -19 0.31 51 2.11

6 1.14 -18.5 0.32 52 2.14

7 1.16 -18 0.33 53 2.16

8 1.17 -17.5 0.34 54 2.19

9 1.19 -17 0.35 55 2.22

10 1.21 -16.5 0.35 56 2.25

11 1.22 -16 0.36 57 2.28

12 1.24 -15.5 0.37 58 2.31

13 1.26 -15 0.38 59 2.34

14 1.27 -14.5 0.39 60 2.37

15 1.29 -14 0.4 61 2.4

16 1.31 -13.5 0.41 62 2.44

17 1.33 -13 0.41 63 2.47

18 1.35 -12.5 0.42 64 2.5

19 1.37 -12 0.43 65 2.53

20 1.38 -11.5 0.44 66 2.56

21 1.4 -11 0.45 67 2.6

22 1.42 -10.5 0.46 68 2.63

23 1.44 -10 0.47 69 2.67

24 1.46 -9.5 0.48 70 2.7

25 1.48 -9 0.49 71 2.74

26 1.5 -8.5 0.5 72 2.77

27 1.52 -8 0.51 73 2.81

28 1.54 -7.5 0.52 74 2.84

29 1.57 -7 0.53 75 2.88

30 1.59 -6.5 0.54 76 2.92

31 1.61 -6 0.55 77 2.95

32 1.63 -5.5 0.57 78 2.99

33 1.65 -5 0.58 79 3.03

34 1.68 -4.5 0.59 80 3.07

35 1.7 -4 0.6 81 3.1

36 1.72 -3.5 0.61 82 3.14

37 1.75 -3 0.62 83 3.18

38 1.77 -2.5 0.64 84 3.22

39 1.79 -2 0.65 85 3.26

40 1.82 -1.5 0.66 86 3.3

41 1.84 -1 0.67 87 3.35

42 1.87 -0.5 0.68 88 3.39

43 1.89 0 0.7 89 3.43

44 1.92 0.5 0.71 90 3.47

45 1.94 1 0.72 91 3.51

46 1.97 1.5 0.74 92 3.56

17 80.2376 74 8.4881 132 1.4937

18 76.6616 75 8.166 133 1.4551

19 73.2636 76 7.8945 134 1.4177

20 70.0337 77 7.6334 135 1.3813

21 66.9628 78 7.382 136 1.3461

22 64.0424 79 7.1401 137 1.3118

23 61.2643 80 6.9072 138 1.2786

24 58.6208 81 6.683 139 1.2463

25 56.1048 82 6.467 140 1.215

26 53.7095 83 6.259

For AC model: NSK-BD020I V=2*MPa+0.5

No. V No.

TABLE 7

Te/ Tc Pe/Pc Te/ Tc Pe/Pc Te/ Tc Pe/Pc



MPa



MPa



MPa

1 0.69 -30 0.17 56 1.37 2.5 0.76 111 2.54 30 1.78

2 0.7 -29 0.18 57 1.39 3 0.78 112 2.56 30.5 1.81

3 0.72 -28 0.19 58 1.4 3.5 0.79 113 2.59 31 1.83

4 0.73 -27 0.2 59 1.42 4 0.8 114 2.62 31.5 1.86

5 0.75 -26 0.22 60 1.43 4.5 0.82 115 2.65 32 1.88

6 0.76 -25 0.23 61 1.45 5 0.83 116 2.68 32.5 1.91

7 0.78 -24 0.24 62 1.47 5.5 0.85 117 2.71 33 1.93

8 0.79 -23 0.25 63 1.48 6 0.86 118 2.74 33.5 1.96

9 0.81 -22 0.27 64 1.5 6.5 0.88 119 2.77 34 1.98

10 0.82 -21 0.28 65 1.52 7 0.89 120 2.8 34.5 2.01

11 0.84 -20 0.3 66 1.53 7.5 0.91 121 2.83 35 2.04

12 0.85 -19.5 0.31 67 1.55 8 0.92 122 2.86 35.5 2.06

13 0.86 -19 0.31 68 1.57 8.5 0.94 123 2.89 36 2.09

14 0.87 -18.5 0.32 69 1.59 9 0.95 124 2.92 36.5 2.12

15 0.88 -18 0.33 70 1.61 9.5 0.97 125 2.95 37 2.15

16 0.89 -17.5 0.34 71 1.62 10 0.98 126 2.98 37.5 2.17

17 0.89 -17 0.35 72 1.64 10.5 1 127 3.02 38 2.2

18 0.9 -16.5 0.35 73 1.66 11 1.02 128 3.05 38.5 2.23

19 0.91 -16 0.36 74 1.68 11.5 1.03 129 3.08 39 2.26

20 0.92 -15.5 0.37 75 1.7 12 1.05 130 3.12 39.5 2.29

21 0.93 -15 0.38 76 1.72 12.5 1.07 131 3.15 40 2.32

22 0.94 -14.5 0.39 77 1.74 13 1.08 132 3.18 40.5 2.35

23 0.95 -14 0.4 78 1.76 13.5 1.1 133 3.22 41 2.38

24 0.96 -13.5 0.41 79 1.78 14 1.12 134 3.25 41.5 2.41

25 0.97 -13 0.41 80 1.8 14.5 1.14 135 3.29 42 2.44

26 0.98 -12.5 0.42 81 1.82 15 1.15 136 3.32 42.5 2.47

27 0.99 -12 0.43 82 1.84 15.5 1.17 137 3.36 43 2.5

28 1.01 -11.5 0.44 83 1.86 16 1.19 138 3.39 43.5 2.53

29 1.02 -11 0.45 84 1.88 16.5 1.21 139 3.43 44 2.56

30 1.03 -10.5 0.46 85 1.9 17 1.23 140 3.46 44.5 2.59

31 1.04 -10 0.47 86 1.92 17.5 1.24 141 3.5 45 2.62

32 1.05 -9.5 0.48 87 1.94 18 1.26 142 3.54 45.5 2.66

33 1.06 -9 0.49 88 1.97 18.5 1.28 143 3.57 46 2.69

34 1.07 -8.5 0.5 89 1.99 19 1.3 144 3.61 46.5 2.72

35 1.09 -8 0.51 90 2.01 19.5 1.32 145 3.65 47 2.76

36 1.1 -7.5 0.52 91 2.03 20 1.34 146 3.69 47.5 2.79

37 1.11 -7 0.53 92 2.06 20.5 1.36 147 3.73 48 2.82

38 1.12 -6.5 0.54 93 2.08 21 1.38 148 3.77 48.5 2.86

39 1.13 -6 0.55 94 2.1 21.5 1.4 149 3.8 49 2.89

40 1.15 -5.5 0.57 95 2.13 22 1.42 150 3.84 49.5 2.93

41 1.16 -5 0.58 96 2.15 22.5 1.44 151 3.88 50 2.96

42 1.17 -4.5 0.59 97 2.17 23 1.46 152 3.93 50.5 3

43 1.19 -4 0.6 98 2.2 23.5 1.49 153 3.97 51 3.03

44 1.2 -3.5 0.61 99 2.22 24 1.51 154 4.01 51.5 3.07

45 1.21 -3 0.62 100 2.25 24.5 1.53 155 4.05 52 3.1

46 1.23 -2.5 0.64 101 2.27 25 1.55 156 4.09 52.5 3.14

47 1.24 -2 0.65 102 2.3 25.5 1.57 157 4.13 53 3.18

48 1.25 -1.5 0.66 103 2.32 26 1.6 158 4.18 53.5 3.22

49 1.27 -1 0.67 104 2.35 26.5 1.62 159 4.22 54 3.25

50 1.28 -0.5 0.68 105 2.38 27 1.64 160 4.26 54.5 3.29

51 1.3 0 0.7 106 2.4 27.5 1.66 161 4.31 55 3.33

52 1.31 0.5 0.71 107 2.43 28 1.69 162 4.35 55.5 3.37

53 1.33 1 0.72 108 2.45 28.5 1.71 163 4.39 56 3.41

54 1.34 1.5 0.74 109 2.48 29 1.73 164 4.44 56.5 3.45

55 1.36 2 0.75 110 2.51 29.5 1.76 165 4.48 57 3.49

For HP model: NSK-BD035I V=(8/7)*MPa+0.5

No.

krameR noitinifed noitcetorp ro rorrE tnetnoc yalpsiD

E4 Temp. sensor error

E5 Voltage protection(overvoltage and undervoltage)

Self-recovery for the first v oltage protection, second voltage

protection needs to be powered on and then recover.

E6 DC motor error

niaga no nehw revoceR nim 01 ni snoitcetorp 6E 2 bE

E7 Air discharge sensor T5 loosely-inserted error

H0 Main control chip and comm. Chip comm. error

niaga no gnirewop nehw revoceR nim 021 ni snoitcetorp )3P( 3 3H

H4 3 (P6) protec tions in 60 min

Recover when powering on again

H5 5 (P2) protec tions in 100 min

Recover when powering on again

H6 3 (P4) protec tions in 100 min

Recover when powering on again

H8 Pressure sensor error

Hb Heating high pressure protection

HH PH standby in 200 min.

Recover when powering on again

P0 Module radiator tem p. Tf protection

P1 High pressure protection

P2 Low pressure protection

P3 f requency-conversion over-current protection

P4 Air discharge overtemperature protection

Cooling high pressure protection

(T3 pipe high temp.)

P6 Compressor instant over-cu

rrent protection

PH Compressor liquid –return protection

.sutats lamron ot revocer lliw ti ,nim 2 retfA noitcetorp noohpyt naf CD 8P

C3 T3 sensor loosely-inserted error

CE 5 P1 protections in 150min

Recover when powering on again

F1 High pressure protection switch error

F3 5 P5 protec tions in 180min

Recover when powering on again

F4 3 P0 protec tions in 120min

Recover when powering on again

5 Hb protections in 180min

Recover when powering on again

Frequency limited/status definition

D T5 high temp. protection frequency limit

P Compression ratio protection frequenc y limit

F Module temp. protection frequency lim

C Current protection frequency limit

U V oltage protection frequency limit

H Condensing pressure protection frequency limit

A Oil return

dF Defrost

T3 high temp. protection frequenc y limit L

8.5 Error code table

powering

twice

krameR elpmaxE tnetnoc kcehc tnioP .oN

TR+ledoM 3C yticapac tinu roodtuO 0

2 edom tinu roodtuO 1

0 standby,2

cooling 

3heating

2 Outdoor unit set frequenc y

eulav lautcA eerged gninepo VXE 3

4 T3 tube temp.

5 T4 ambient temp.

6 T5 air discharge temp.

7 Reserved

8 Te low pressure temp.(air return saturation)

9 Tc high pressure temp.(Air dischage saturation)

10 Tf module temp.

Actual value

*10

Actual value

*10

13 Air discharge s uperheat

14 Reserved

15 Reserved

16 Frequency c onversion current

17 Voltage value

18 Air speed

19 Reserved

20 Reserved

21 Reserved

Spit oil quantity

Actual value

/10

23 The last time error code

24 Software version

25 Remark“--”

Pc high pressure (air discharge pressure) 12

Pe low pressure (air return pressure) 11

1Shift to display content of data code pipe when pressing point check key shortly(check key).

Display the next set of data when press the key once. The display content is accordance with the

sequence.

2There’re 3 digits for LED. The first digit is sequence(only display units digit, recycling display), the

second and third digits are values. For example, the 8th item is operating low pressure saturation

temperature. The 11th item is operating low pressure. For detailed meanings, please refer to the point

check table.3. After staying for 20s, it will recover to the normal status display

4For normal status display, the last 2 digits of nixie tube will display ambient temp when the unit is in

standby status(the first nixie tube has no display). When operating, last 2 digits of nixie tube will display

operating frequency.(If there’s system protection, the first digit of nixie tube will display status code,

details for code meaning, please refer to the error code table )

8.6 Parameter point check table

10.0 WIRING DIAGRAM

9.0 WARRANTY

9.1 MAINTENANCE

1. Dirt should not be allowed to accumulate on the indoor or outdoor coils or other parts in the air circuit. Clean as often as necessary to keep the unit clean. Use a brush, vacuum cleaner attachment, or other suitable means.

The outdoor fan motor is permanently lubricated and does not require periodic oiling.

3. Refer to the furnace or air handler instructions for filter and blower motor maintenance.

4. The indoor coil and drain pan should be inspected and cleaned regularly to assure

proper drainage.

Assist owner with processing Warranty cards and/or online registration.

CAUTION

Thes e un its must be wired and insta ll ed in accordance with all N at ional and Loca l Sa fety Codes.

CAUTION

It is unlawful to knowingly vent, release or discharge refrigerant into the open air during repair, service, maintenance or the final disposal of this unit. When the system is functioning properly and the owner has been fully instructed, secure the owner’s approval.

10.1 CONTROL WIRING FOR UNITS

TH ERMOSTAT

R E

YE LLO

GREE

INDOOR UNIT

OUTDOOR UNIT

LACK

Fig.12 Control Wiring for A/C Systems.

LACK

Fig.1 4 Outdo or Unit W iring D ia gra m fo r Syste ms

(2 08/23 0V 1P 60H z) (24/ 36 K).

THERMOSTAT

RED

GREEN

INDOOR UNIT

OUTDOOR UNIT

R Y

YELLOW

BLACK

RED

BLUE

Fig.13 Control Wiring for H/P Systems.



PURPLE

WHITE

F T

5 T

F T

L - C F P

1 L

2 L

N O

4 T

C P H

V E E

Y W C

S P

1 V S

2 P

4 P

H C C

N W O R B

W O L L E Y

G / Y

H L

M O C

: G N I N R A W

Y L T N E M N A M R E P E B T S U M T E N I B A C

M R O F N O C O T G N I R I W L L A D N A D E D N U O G

L A C O L D N A , C . L . C , C . E . C , C . E . N , C . E . I O T

T N E M E C A L P E R E L B A C I L P P A S A S E D O C

D N A E G U A G E M A S E H T E B T S U M E R I W

E R I W L A N I G I R O S A E P Y T N O I T A L U S N I

Y L N O S R O T C U D N O C R E P P O C E S U

D D I I S S P

1 - 5 W S

2 - 5 W S

F F O

N O

F F O

N O

S 0 6 : g n i t s o r f e d d n e e h t f o y a l e D e m i T

g n i t s o r f e d l a m r o N

g n i t s o r f e d e h t o t n i e c n a v d A

P M O C

P A C

E C N A T I C A P A C

H C C

E V L A V Y A W - 4

V E E

E V L A V E V I S N A P X E C I R T C E L E

C P H

H C T I W S E R U S S E R P H G I H

3 T

5 T

4 T

R O S N E S E R U T A R E P M E T R E S N E D N O C

R O S N E S E R U T A R E P M E T T N E I B M A R O O D T U O

G N I T A E H E S A C K N A R C

R O S N E S E R U T A R E P M E T E G R A H C S I D . P M O C

1 V S

L - C F P

E C N A T C U D N I C F P

S P

R O S N E S E R U S S E R P

L E D O M P H R O F Y L N O

L E D O M P H R O F Y L N O : 1 J

L E D O M P H R O F Y L N O W D N A B

L E D O M P H R O F Y L N O

W O L L E Y W O L L E Y

K C A L B

E U L B

E G N A R O

N W O R B

R O S N E S . P M E T R O T A I D A R

R O S S E R P M O C

2 - 4 W S

3 - 4 W S

d e s u t o N

4 - 4 W S

F F O

N O

g n i t a e h / g n i l o o c y l l a m r o N

F F O

N O

g n i t a e h / g n i l o o c d e t a r e l e c c A

e l b a s i d t u p t u o y t i c a p a c e v i t p a d A

t u p t u o y t i c a p a c e v i t p a d A

1 - 4 W S

d e s u t o N

4 H

5 H

6 H

s e t u n i m 0 0 1 n i n o i t c e t o r p ) 4 P ( s e m i t 3

C H

t l u a f r o s n e s e r u t a r e p m e t l a t n e m n o r i v n E

b H

g n i t a e H n i n o i t c e t o r p e r u s s e r p h g i h

H H

s e t u n i m 0 8 1 n i s e m i t 3 g n i n n u r t e W

5 E

7 E

6 E

n o i t c e t o r p e g a t l o V

d e v r e s e R

t l u a f d e t a e s t o n s i r o s n e s s a g t s u a h x e e h T

4 E

E D O C

0 H

p i h c l o r t n o c n i a m n i t l u a f n o i t a c i n u m m o C

s e t u n i m 0 6 n i n o i t c e t o r p ) 6 P ( s e m i t 3

s e t u n i m 0 0 1 n i n o i t c e t o r p ) 2 P ( s e m i t 3

6 P

H P

E C

n o i t c e t o r p e r u s s e r p h g i H

3 C

t l u a f d e t a e s t o n s i r o s n e s 3 T e h T

4 F

s e t u n i m 0 8 1 n i n o i t c e t o r p . p m e t h g i h 3 T s e m i t 3

2 P

4 P

3 P

n o i t c e t o r P e r u s s e r p w o L

n o i t c e t o r p t n e r r u c r e v O

s e t u n i m 0 0 1 n i n o i t c e t o r p ) 1 P ( s e m i t 3

t l u a f d e t a e s t o n s i r o s n e s s a g t s u a h x e e h T

1 P

0 P

n o i t c e t o r P . p m o c e h t f o . p m e t t s u a h x e e h T

5 P

n o i t c e t o r p . p m e t e b u t e h T h g i H

n o i t c e t o r p e l u d o m M P I e h T

y b d n a t s g n i n n u r t e W

3 F

n o i t p i r c s e d t l u a F

8 H

t l u a f r o s n e s e r u s s e r P

9 H

s e t u n i m 0 6 n i n o i t c e t o r p ) 9 P ( s e m i t 3

d e v r e s e R

s e t u n i m 0 2 1 n i n o i t c e t o r p ) 0 P ( s e m i t 3

S 0 2 1 : g n i t s o r f e d d n e e h t f o y a l e D e m i T

N O

F F O

D E L N E E R G

t l u a f d r a o b l o r t n o c c i r t c e l E

y b d n a t S

t l u a f n o i t a c i n u m m o C

n o i t c e t o r p e l u d o m M P I e h T

n o i t c e t o r p e g a t l o v c d w o L

r o r r e e s a h p r o s s e r p m o C

t l u a f l o r t n o c M P I e h T

H A S L F D E L D E R

n o i t a r e p o r o s s e r p m o C

O O N

O O F F F

8 4 7 0 9 5 5 7 0 2 0 2

1 J

F F O

N O

F F O

N O

y l n o g n i l o o C

2 J

m e t s y s P H

n o t 3

n o t 5 . 2

S G N I T T E S Y R O T C A F

3 T

Fig.1 5 Outdo or Unit W iring D ia gra m fo r Syste ms

(2 08/23 0V 1P 60H z) (48/ 60 K).

  



  

HPC

EEV

CCH

WARNING: CABINET MU ST BE PERMANMENTLY GOUNDED AND ALL WI RING TO CONFORM TO I.E.C,N.E.C, C.E.C,C.L.C,AND LOCAL C ODES AS APPLIC ABLE REPLACEMENT WIRE MUST BE THE SAME GAUGE AND INSULATION TYP E AS ORIGINAL WIRE

USE C OPPE R CON DUCTORS ONLY

COMP

CAP

CAPAC ITAN CE

CC H

4-WAY VALVE

EEV

ELECTRIC EXPANSI VE VALVE

HP C

HIGH PRES SURE SWITCH

CONDENSER TEMPERATURE SENSOR

CRANKCASE HEATING

COMP. DISCHARGE TEMPERATURE SENSO R

SV1

PFC-L

PFC INDUCTANCE

PRES SUR E SEN SOR

 

RADIAT OR TEMP. SENSO R

COM PR ESSOR

  

DB 1

3 tim es (P4 ) prote ction in 10 0 minutes

Temperature sensor fault(T3 T4 T5 TF)   

High pressure protection in Heating

Wet ru nni ng 2 times in 200 minu tes

Voltage protection

DC fan motor fault

The exhaust gas sensor(T5) is not seated fault

CODE

Communication fault in main control chip

3 t i m e s (P6) pr otection in 60 minutes

5 t i m e s (P2) pr ote ctio n in 100 min ute s

Typhoon pro tec tion of t he fan moto r

High pressure protection

The T3 sensor is not seated fault

Low pressure Pro tection

5 times (P1) protection in 150 minutes

The exhaust temp. Of the comp. Protection

(T5)

H i gh The tub e temp. (T3) pr otection

Th e IPM modu le p rotectio n

Wet running standby

Fault descrip tion

Pre ssure s ensor(PS) faul t

2 times (E6) protection in 10 minutes

Hig h p

ressure swi tch (HPC) fault

5 ti mes (Hb) protectio n in 180 min utes

Com pr es so r ov e r current protection

5 t im es ( P5 ) pro tection in 180 mi nute s

3 tim es (P 0) protectio n in 120 minutes

The module radiator temperature (TF)protection

SW5-1

SW5-2

OFF

Time D elay of the end defrosting:60S

Normal defrosting

A dva nce into t he d efrosting

SW4-2

SW4-3

Not used

SW4-4

OFF

Normally cooling/heating

OFF

A cce lerated cooling/heating

Adaptive cap acit y output di sabl e

A daptive cap acity out pu t en abl e

SW4-1

Not used

Time D elay of the end defrosting:120S

OFF

 

GREEN LED

Electric control board fault

St an dby

The IPM mo dul e protectio n

Low dc vol ta ge p rotection

Compressor phase error

The IPM control fault

RED LED FLSAH

Compressor operation

Co mmuni cation f au lt

AM B IE NT TEMPERA TU R E S ENSO R( FOR HP SYS TEM)

10 K RESISTANCE ( FOR COOLING ONLY SYSTEM) 

COMP

202075890714

Function description for the corresponding position

tnetnoC .oN tnetnoC .oN

trop gnitcennoc rellortnoc .pmeT 31 lanimret gniriw rosserpmoC 1

2 Reactor wiring terminal(connect a reactor between 2 and 3 ) 14 Function dial code SW4

3 Reactor wiring terminal(connect a reactor between 2 and 3 ) 15 Spot check button

nottub noitarepo decroF 61 5WSedoc laid noitcnuf gnitsorfeD 4

devreseR 71 trop rosnes erusserP 5

yalpsid ebut eixiN 81 trop rosnes.pmet egrahcsid riA 6

trop lortnoc naF 91 )ylno PH(trop rosnes.pmet roodtuO 7

lanimret lortnoc enoz gnitaeh esacknarC 02 trop rosnes.pmet resnednoC 8

eriw trohS 12 trop rosnes.pmet rotaidaR 9

lanimret gnitcennoc ylppus rewoP 22 trop hctiws erusserp hgiH 01

lanimret gnitcennoc ylppus rewoP 32 )ylno PH(trop evird VXE 11

pmal rotacidnI 42 trop evlav yaw-4 21

REFRIGERANT CHARGE FOR AC SYSTEM

55 60 65 70 75 80 85 90 95 100 105 110 115

177 173 169 165 161 157 153 149 145 141 137 133 129 125 121 117 113 109

Suct ion Pressure at

Large Serv ice Valve(psig)

Cooling Mode

18 SEER R410A AC Charge Chart 2 TON

Outdoor Ambient Temperature(°F)

Lipuid Pr essure at Small Service Valve(psig)

55 60 65 70 75 80 85 90 95 100 105 110 115

177 173 169 165 161 157 153 149 145 141 137 133 129 125 121 117 113 109

Suct ion Pressure at

Large Serv ice Valve(psig)

Cooling Mode

18 SEER R410A AC Charge Chart 3 TON

Outdoor Ambient Temperature(°F)

Lipuid Pr essure at Small Service Valve(psig)

55 60 65 70 75 80 85 90 95 100 105 110 115

177 173 169 165 161 157 153 149 145 141 137 133 129 125 121 117 113 109

Suct ion Pressure at

Large Serv ice Valve(psig)

Cooling Mode

18 SEER R410A AC Charge Chart 5 TON

Outdoor Ambient Temperature(°F)

Lipuid Pr essure at Small Service Valve(psig)

55 60 65 70 75 80 85 90 95 100 105 110 115

177 173 169 165 161 157 153 149 145 141 137 133 129 125 121 117 113 109

Suct ion Pressure at

Large Serv ice Valve(psig)

Cooling Mode

18 SEER R410A AC Charge Chart 4 TON

Outdoor Ambient Temperature(°F)

Lipuid Pr essure at Small Service Valve(psig)

307 330 353 376 403 430 457 484

286 306 329 352 375 402 429 456 483

266 285 305 328 351 374 401 428 455 482

245 265 284 304 327 350 372 400 427 454 481

224 244 264 283 303 326 349 371 399 426 453 480 203 223 243 263 282 302 325 347 370 398 425 452 479 202 222 242 262 281 301 324 346 369 396 423 450 478 201 221 241 261 280 300 323 345 368 395 422 449 477 200 220 240 260 279 299 322 344 367 394 421 448 476 199 219 239 259 278 298 321 343 366 393 420 447 475 198 218 238 258 277 297 320 342 365 392 419 446 473 197 217 237 257 276 296 319 341 364 391 418 445 472 196 216 236 256 275 295 318 340 363 390 417 444 471 195 215 235 255 274 294 316 339 361 389 416 443 470 194 214 234 254 273 293 315 338 360 388 415 442 469 193 213 233 253 272 292 314 337 359 387 414 441 468 192 212 232 252 271 291 313 336 358 385 412 439 467 191 211 231 251 270 290 312 335 357 384 411 438 466

312 334 357 379 404 430 456 482

291 311 333 355 378 403 429 455 481

271 290 310 332 354 376 402 428 454 480

250 269 289 309 331 353 375 401 427 453 478

229 249 268 288 307 329 352 374 399 425 451 477

209 228 247 267 286 306 328 350 373 398 424 450 476 206 226 246 266 285 305 327 349 371 397 423 449 474 207 226 245 264 284 304 326 348 370 396 422 448 473 205 224 244 263 283 302 324 347 369 394 420 446 472 204 223 242 262 281 301 323 345 367 393 419 445 471 201 221 241 261 280 300 322 344 366 392 418 444 469 202 221 240 259 279 298 321 343 365 390 416 442 468 200 219 239 258 278 297 319 341 364 389 415 441 467 199 218 237 257 276 296 318 340 362 388 414 440 465 196 216 236 256 275 295 317 339 361 386 412 438 464 195 215 235 254 274 293 315 337 360 385 411 437 463 195 214 233 253 272 292 314 336 358 384 410 436 461 192 212 232 252 271 291 313 335 357 383 409 435 460

304 327 349 372 398 424 450 475

284 303 326 348 371 396 422 448 474

264 283 302 325 347 370 395 421 447 473

243 263 282 301 323 346 368 394 420 446 472

223 242 261 281 300 322 345 367 393 419 445 471 203 222 241 260 280 299 321 344 366 392 418 444 470 202 221 240 259 279 298 320 343 365 391 417 443 469 201 220 239 258 278 297 319 342 364 390 416 442 468 198 218 238 257 277 296 318 341 363 389 415 441 467 197 217 237 256 276 295 317 340 362 388 414 440 466 197 216 235 255 274 294 316 338 361 387 413 439 464 196 215 234 254 273 293 315 337 360 385 411 437 463 193 213 233 253 272 292 314 336 359 384 410 436 462 192 212 232 252 271 291 313 335 357 383 409 435 461 191 211 231 251 270 290 312 334 356 382 408 434 460 190 210 230 250 269 289 311 333 355 381 407 433 459 189 209 229 249 268 288 310 332 354 380 406 432 458 188 208 228 247 267 287 309 331 353 379 405 431 457

303 325 347 369 394 418 443 468

284 302 324 346 368 393 418 442 467

264 283 301 323 345 368 392 417 441 466

244 263 282 300 322 345 367 391 416 440 465

224 243 262 281 300 322 344 366 390 415 440 464 204 223 242 261 280 299 321 343 365 389 414 439 463 203 222 241 260 279 298 320 342 364 388 413 438 462 200 220 240 259 278 297 319 341 363 388 412 437 461 199 219 239 258 277 296 318 340 362 387 411 436 460 199 218 238 257 276 295 317 339 361 386 410 435 460 198 217 236 256 275 294 316 338 360 385 409 434 459 197 216 235 255 274 293 315 337 359 384 409 433 458 194 214 234 254 273 292 314 336 359 383 408 432 457 193 213 233 253 272 291 313 336 358 382 407 431 456 192 212 232 252 271 291 313 335 357 381 406 431 455 193 212 231 250 270 290 312 334 356 380 405 430 454 192 211 230 249 269 289 311 333 355 379 404 429 453 189 209 229 248 268 288 310 332 354 379 403 428 452

REFRIGERANT CHARGE FOR HP SYSTEM

55 60 65 70 75 80 85 90 95 100 105 110 115

177 173 169 165 161 157 153 149 145 141 137 133 129 125 121 117 113 109

Coo lin g Mo de

18 SEER R410A HP Charge Chart 2 TON (cooling mode)

Outdoor Ambient Temperature(°F)

Lipuid Pr essure at Small Service Valve(psig)

Suct ion Pressure at

Large Serv ice Valve(psig)

55 60 65 70 75 80 85 90 95 100 105 110 115

177 173 169 165 161 157 153 149 145 141 137 133 129 125 121 117 113 109

Coo lin g Mo de

18 SEER R410A HP Charge Chart 3 TON (cooling mode)

Outdoor Ambient Temperature(°F)

Lipuid Pr essure at Small Service Valve(psig)

Suct ion Pressure at

Large Serv ice Valve(psig)

55 60 65 70 75 80 85 90 95 100 105 110 115

177 322 346 371 395 424 452 480 508 173 301 320 344 369 393 422 450 478 506 169 279 299 318 342 367 391 420 448 476 504 165 258 277 297 316 340 365 389 418 446 474 502 161 237 256 275 295 314 338 363 387 416 444 472 500 157 216 235 254 273 293 312 336 361 385 414 442 470 498 153 214 233 252 271 291 310 334 359 383 412 440 468 496 149 212 231 250 269 289 308 332 357 381 410 438 466 494 145 210 229 248 267 287 306 330 355 379 408 436 464 492 141 208 227 246 265 285 304 328 353 377 406 434 462 490 137 206 225 244 263 283 302 326 351 375 404 432 460 488 133 204 223 242 261 281 300 324 349 373 402 430 458 486 129 202 221 240 259 279 298 322 347 371 400 428 456 484 125 200 219 238 257 277 296 320 345 369 398 426 454 482 121 198 217 236 255 275 294 318 343 367 396 424 452 480 117 196 215 234 253 273 292 316 341 365 394 422 450 478 113 194 213 232 251 271 290 314 339 363 392 420 448 476 109 192 211 230 249 269 288 312 337 361 390 418 446 474

Coo lin g Mo de

18 SEER R410A HP Charge Chart 4TON (c ooling mode)

Outdoor Ambient Temperature(°F)

Lipuid Pr essure at Small Service Valve(psig)

Suct ion Pressure at

Large Serv ice Valve(psig)

55 60 65 70 75 80 85 90 95 100 105 110 115

177 173 169 165 161 157 153 149 145 141 137 133 129 125 121 117 113 109

Coo lin g Mo de

18 SEER R410A HP Charge Chart 5 TON (cooling mode)

Outdoor Ambient Temperature(°F)

Lipuid Pr essure at Small Service Valve(psig)

Suct ion Pressure at

Large Serv ice Valve(psig)

315 338 361 384 411 437 463 489

294 313 336 359 382 409 435 461 487

274 292 311 334 357 380 407 433 459 485

253 272 290 309 332 355 378 405 431 457 483

232 251 270 288 307 330 353 376 403 429 455 481 211 230 249 268 286 305 328 351 374 401 427 453 479 209 228 247 266 284 303 326 349 372 399 425 451 477 207 226 245 264 282 301 324 347 370 397 423 449 475 205 224 243 262 280 299 322 345 368 395 421 447 473 203 222 241 260 278 297 320 343 366 393 419 445 471 201 220 239 258 276 295 318 341 364 391 417 443 469 199 218 237 256 274 293 316 339 362 389 415 441 467 197 216 235 254 272 291 314 337 360 387 413 439 465 195 214 233 252 270 289 312 335 358 385 411 437 463 193 212 231 250 268 287 310 333 356 383 409 435 461 191 210 229 248 266 285 308 331 354 381 407 433 459 189 208 227 246 264 283 306 329 352 379 405 431 457 187 206 225 244 262 281 304 327 350 377 403 429 455

308 331 354 378 405 432 459 486

287 307 330 353 377 404 431 458 485

266 286 306 329 352 376 403 430 457 484

245 265 285 305 328 351 374 402 429 456 483

224 244 264 284 304 327 350 373 401 428 455 482 203 223 243 263 283 303 326 349 372 400 427 454 481 202 222 242 262 282 302 325 348 371 398 425 452 480 201 221 241 261 281 301 324 347 370 397 424 451 479 200 220 240 260 280 300 323 346 369 396 423 450 478 199 219 239 259 279 299 322 345 368 395 422 449 477 198 218 238 258 278 298 321 344 367 394 421 448 475 197 217 237 257 277 297 320 343 366 393 420 447 474 196 216 236 256 276 296 319 342 365 392 419 446 473 195 215 235 255 275 295 318 341 363 391 418 445 472 194 214 234 254 274 294 317 340 362 390 417 444 471 193 213 233 253 273 293 316 338 361 389 416 443 470 192 212 232 252 272 292 315 337 360 387 414 441 469 191 211 231 251 271 291 314 336 359 386 413 440 468

312 335 357 380 405 431 457 483

291 311 334 356 379 404 430 456 482

271 290 310 332 355 377 403 429 455 481

250 269 289 309 331 354 376 402 428 454 479

229 249 268 288 307 330 352 375 400 426 452 478

209 228 247 267 286 306 329 351 374 399 425 451 477 206 226 246 266 285 305 327 350 372 398 424 450 475 207 226 245 264 284 304 326 349 371 397 423 449 474 205 224 244 263 283 302 325 347 370 395 421 447 473 204 223 242 262 281 301 323 346 368 394 420 446 472 201 221 241 261 280 300 322 345 367 393 419 445 470 202 221 240 259 279 298 321 343 366 391 417 443 469 200 219 239 258 278 297 320 342 365 390 416 442 468 199 218 237 257 276 296 318 341 363 389 415 441 466 196 216 236 256 275 295 317 339 362 387 413 439 465 195 215 235 254 274 293 316 338 361 386 412 438 464 195 214 233 253 272 292 314 337 359 385 411 437 462 192 212 232 252 271 291 313 336 358 384 410 436 461

[]

2. Properly insulate suction lines and ﬁttings. .........

5.Check all duct outlets; they must be open and unrestricted.

6.Check drain lines and be sure all joints are tight...............

[]

3. Properly secure and isolate all refrigerant lines...

[]

Be sure unit suspension(if used) is secure and that thereare no tools or loose debris in or around or on

top of the unit......................................................

4. Verify that all electrical connections are tight. .....

[]

After installation has been completed, it is recommended that the entire system be checked against the following list:

Final phases of this installation are the unit Operational and Checkout Procedures. To obtain proper performance, all units must be operated and charge adjustments made in accordance with procedures found in the Service Facts of the Outdoor Unit.

[]

7.Be sure that a return air ﬁlter is installed. ..........................

[]

8.Operate complete system in each mode to verify proper performance. Verify operation of supplementary electric

heater. ...............................................................................

TABLE 9. Operational And Checkout Procedures

TABLE 10: Electrical Data:

NOTES: 1.AC: Air Conditioner; HP: Heat Pump; No description:Air Conditioner & Heat Pump.

2.T: Toshiba Compressor; C: Copeland Compressor; L: LG Compressor

Model Minimum Circuit Ampacity(A)

Maximum Circuit Protector(A)

18AC/T

9.0

24/T

11.6

30/T

16.0

18/C

11.9

24HP/C

17.5

24AC/C

17.6

30AC/C

18.4

18HP/T

9.4

E4 (Temp. sensor error)

Diagnosis

Handling

Whether sensor T3T4TF T5 are inserted and connected reliably (No T4 for cooling only)

Yes

Unplug the sensor, check if resistance for T3, T4 is in the range of TABLE1

Yes

Unplug the sensor, check if resistance for TF, T5 is in the range of TABLE2

Yes

Whether report the same error when re-powered on

Re-insert the sensor tight according to wiring nameplate

Replace T3 or T4 sensor

Replace TF or T5 sensor

Replace the mainboard

Yes

H0 (main control chip and communication chip communication error)

Diagnosis

Handling

Power off and re-power on to see if it is normal

Yes

Caused by electricity grid strong interference. Go back to normal when electricity grid is normal

Replace the mainboard

H4/P6 Compressor instant over-current protection)

Diagnosis

Handling

Check if ball valves are open

Yes

Check whether the compressor wiring is normal

Yes

Whether compressor insulation resistance is below 100k

Yes

Whether compressor coil is broken

Restart to make sure that high and low pressure difference is within 0.2MPa

Yes

Air discharge superheat point check after starting for 30min is always below 5

Open gas valve and liquid valve

Re-start after wiring correctly according to the wiring nameplate

Compressor exchange

Start after pressure balance or if system can’t balance pressure in 10min, then the refrigerant system is error

Compressor exchange

Yes

Replace the mainboard

Cooling inside throttle problem(TXV error) Heating outside EXV problem exchange

Yes

Diagnosisfault diagnosis

Eb/E6 (DC motor error)

Diagnosis

Handling

Check whether motor wiring is reliably connected according to the nameplate

Yes

Check if there’s 15VDC Between P8 and P2

Yes

Replace the motor to see if it is normal after restart?

Re-insert the sensor according to wiring nameplate

Check if wiring is correct, replace the mainboard

Replace the mainboard

P8 DC fan typhoon protection(applicable for 4860))

Diagnosis

Handling

Check whether motor wiring is reliably connected according to the nameplate

Yes

Check if there’s 15VDC between P8 and P2

Yes

Whether motor leads to fan high speed operating because of external force

Whether it reports P8 in power-off status?

Replace the motor

Re-insert the sensor according to wiring nameplate

If wiring is correct, replace the mainboard

Avoid external motor is influenced by the environment directly

Yes

Replace the mainboard

Yes

F4/P0 Module radiator temp. Tf protection)

Diagnosis

Handling

If the radiator is damaged or badly fixed

If there’s dust or fallen leaves influencing radiating

Whether the fan and blade can normally operate

Yes

Whether the duct, including radiator, is blocked by debris

Whether resistance of Tf is in the range of TABLE2

Yes

Re-insert Tf, power off and restart to see if there’s the same error

Fix the radiator. If radiator is damaged, replace it

Yes

Clean radiator duct

Yes

Replace motor or blade

Replace Tf

Troubleshoot surrounding influence to the duct

Yes

Replace variable frequency drive

Yes

E5Voltage protection)

Diagnosis

Handling

Whether the power supply voltage is between 208V-10% and 230V+10%

Yes

Check if the power supply is reliably connected, whether the power supply wire diameter meets requirements in the manual

Yes

Cut off the power, and wait until electronic control indicator lamp goes out, then power on to see whether the compressor operates normally

Yes

Test if there’s 380Vdc on the terminals of CN31 when compressor is operating

Yes

Check if there’s highpower equipment nearby

Check power supply to troubleshoot problems

Replace power supply wire or connect power supply wire well

Replace the mainboard

Yes

Separate high-power equipment and power supply

Caused by power supply voltage instantaneous fluctuation. Recover when power grid is normal

E7 air discharge temp. sensor loose error)

Diagnosis

Handling

Check whether the sensor doesn’t fix to discharge pipe

Check if wiring of T3T5 sensors and pressure sensor are in accordance with wiring name plate

Yes

Check if there’re other heat sources around T3T5

Whether resistance of T5 is in the range of TABLE2

Yes

Power off and restart to see if there’s the same error

Fix air discharge temp. sensor to the air discharge pipe, re-power on to start the unit

Yes

Wiring according to the nameplate and re-power on to start the unit

To troubleshoot influences by surrounding heat sources

Yes

Replace T5 temp. sensor

Replace the mainboard

Yes

H3/P3 Frequency-conversion over-current protection)

Diagnosis

Handling

If ball valves are open

Yes

If compressor wiring is normal

Yes

Whether compressor insulation resistance is below 100k

Yes

Restart after powering on to make sure that high and low pressure difference is within

0.2MPa

Yes

Power off and restart to see if there’s the same error

Open gas valve and liquid valve

Wiring according to the nameplate and re-power on to start the unit

Compressor exchange

Start after pressure balance or if system can’t balance pressure in 10min, then the refrigerant system is error

Replace the mainboard

Yes

H5/P2 Low pressure protection)

Diagnosis

Handling

Whether gas valve and liquid valve are open

Yes

Whether indoor side is normal, valve is blocked or radiator is sheltered, fan is stopped

Unplug low pressure sensor LPC to see if resistance is 0  (0  is normal)

Connect a pressure gage to gas valve and restart to test if pressure is less than

0.3MPa

Yes

Check if refrigerant system is lack of refrigerant according to refrigerant filling table

Power off and restart to see if there’s the same error

Open gas valve and liquid valve

Exclude inside reasons and restart

Yes

Replace the mainboard

Yes

Filling refrigerant and restart

Yes

Replace low pressure sensor

Replace the mainboard

Yes

F5/Hb Heating high pressure protection)

Diagnosis

Handling

Whether gas valve and liquid valve are open

Yes

Whether indoor side is normal, valve is blocked or radiator is sheltered, fan is stopped

If air return temp. of the indoor side is over 35

Whether outdoor side ambient temp. is over 30 

Whether outdoor unit EV is sticking.(C)

Restart to see if there’s the same error

Open gas valve and liquid valve

Exclude indoor side error

Yes

Troubleshooting. e.g. indoor side E-heat or other heat sources are overheat

Yes

Replace EV of outdoor unit

Yes

Not applicable to start heating

Yes

Keep on operating

Replace the mainboard

Yes

HH/PH Compressor liquid return)

Diagnosis

Handling

Whether T3T5 are abnormal (refer to sensor error testing)

Whether indoor unit is abnormal, valve is blocked or radiator is sheltered, fan is stopped

If there’s TXV or EV adjusting for indoor unit(Not applicable for valve element)

Yes

In heating mode, reporting error To see whether external fan is normal

Yes

Restart and heating, after 45min, check whether the external EV action is normal (If air discharge superheat)

Replace sensors

Yes

Troubleshoot indoor unit

Yes

Not applicable for valve element

Replace the mainboard

Troubleshoot external fan (replace the fan motor or fan blade)

Replace outdoor EV

Yes

C3 T3 sensor loosely-inserted protection)

Diagnosis

Handling

Whether the sensor is fixed to the heat exchanger

Check if T3, T4 sensors and pressure switch are wired according to wiring nameplate

Yes

Check if there’re other heat sources around T3T4

Whether pressure switch HPC is in error, whether the fan doesn’t operate

Power off and restart to see if there’s the same error

Fix the sensor to the heat exchanger to U pipe, and power on to restart

Yes

Wiring according to the nameplate correctly and power on to restart

Exclude influence by the nearby heat sources

Yes

Replace the mainboard

Yes

Replace the fan and pressure switch

Yes

H8 Pressure sensor error)

Diagnosis

Handling

Whether pressure sensor PS wiring is normal

Yes

If voltage between gauging pressure sensor PS white line and black line is between

0.5-4.5V

Yes

Restart to see if there’s the same error

Wiring according to the nameplate correctly and power on to restart

Replace pressure sensor

Keep on operating

Yes

Replace the mainboard

F1 High pressure protection switch error)

Diagnosis

Handling

Whether gas valve and liquid valve are open

Yes

Whether high pressure switch resistance is normal

Yes

Stop the unit for an hour to see whether it reports the same error

Open gas valve and liquid valve

Replace sensors

Replace the mainboard

Keep operating

Yes

H6/P4 Air discharge overtemperature protection)

Diagnosis

Handling

Whether gas valve and liquid valve are open

Yes

Check whether air discharge temp. sensor T5 resistance is normal, refer to TABLE2

Yes

Whether position of air discharge temp. sensor is normal. If there’re other heat sources around

Whether compressor is normalabnormal noise abnormal vibration

Check refrigerant filling conditions according to refrigerant filling method

Whether in heating mode, compressor air return pressure is too low so that there’s vacuum phenomenon

Open gas valve and liquid valve

Replace air discharge temp. sensor

Troubleshooting problems and restart

Yes

Filling refrigerant and restart

Yes

Replace compressor

Yes

Replace EXV (valve sticking)

Replace the mainboard

Yes

F3/P5 T3 tube high temp.protection)

Diagnosis

Handling

Whether gas valve and liquid valve are open

Yes

Whether T3T5 are abnormal

Check whether outdoor unit fan is abnormal and whether the outdoor heat exchanger is blocked by debris

Whether there's short circuit in air outlet and inlet side when the ambient temp. is high

Restart to see if there’s the same error

Open gas valve and liquid valve

Replace sensors

Yes

Replace the fan and exclude the surrounding debris of heat exchanger

Yes

Keep operating

Check refrigerant filling amount according to refrigerant filling method

Refill enough amount of refrigerant

Yes

Replace installation position or rectify the surrounding goods to avoid air return short circuit

Yes

Replace the mainboard

Yes

CE/P1 High pressure protection)

Diagnosis

Handling

Whether gas valve and liquid valve are open

Yes

Whether high pressure switch resistance is normal

Yes

Cooling mode refers to F3 Heating mode refers to Hb

Open gas valve and liquid valve

Replace sensors

Intesity IDIC-024KF-3, IDIC-024KC-3, IDIC-048KC-3, IDIC-036KF-3, IDIC-060KF-3 Installation Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual