Icp N4h318ake100 Installation instructions

428 04 5102 01 August 2012

TECHNICAL SUPPORT MANUAL

Split System Heat Pump

N4H3

DANGER, WARNING, CAUTION, and

NOTE

The signal words DANGER, WARNING, CAU-

TION, and NOTE are used to identify levels of haz-

ard seriousness. The signal word DANGER is only

used on product labels to signify an immediate haz-

ard. The signal words WARNING, CAUTION, and

NOTE will be used on product labels and through-

out this manual and other manuals that may apply

to the product.

DANGER -- Immediate hazards which will result in

severe personal injury or death.

WARNING -- Hazards or unsafe practices which

could result in severe personal injury or death.

CAUTION -- Hazards or unsafe practices which

may result in minor personal injury or product or

property damage.

NOTE -- Used to highlight suggestions which will

result in enhanced installation, reliability, or opera-

tion.

Signal Words in Manuals

The signal word WARNING is used throughout this

manual in the following manner:

The signal word CAUTION is used throughout this

manual in the following manner:

Signal Words on Product Labeling

Signal words are used in combination with colors

and/or pictures on product labels.

WARNING

Safety Labeling and Signal Words

!CAUTION

WARNING

TABLE OF CONTENTS

Model Number Identification 2.....................

R--410A Quick Reference Guide 3..................

Wiring Diagrams 4--7.............................

Charging Chart 8.................................

Tech Labels (Expanded Data) 9 -- 16................

Parts List 17 -- 22................................

Exploded Views 23 -- 25..........................

Cooling Multiplying Factors 26 -- 52.................

Heating Multiplying Factors 52 -- 78.................

MODELS

N4H318AKE100 N4H318GKE100

N4H324AKE100 N4H324GKE100

N4H330AKE100 N4H330GKE100

N4H336AKE100 N4H336GKE100

N4H342AKE100 N4H342GKE100

N4H348AKE100 N4H348GKE100

N4H360AKB400 N4H360GKB400

!WARNING

DEATH, PERSONAL INJURY, AND/OR PROPERTY

DAMAGE HAZARD

Failure to carefully read and follow this warning

could result in equipment malfunction, property

damage, personal injury and/or death.

Installation or repairs made by unqualified per-

sons could result in equipment malfunction, prop-

erty damage, personal injury and/or death.

The information contained in this manual is in-

tended for use by a qualified service technician fa-

miliar with safety procedures and equipped with

the proper tools and test instruments.

Installation must conform with local building

codes and with the National Electrical Code

NFPA70 current edition or Canadian Electrical

Code Part 1 CSA C.22.1.

TECHNICAL SUPPORT MANUAL Split System Heat Pump: N4H3

2428 04 5102 01

OUTDOOR UNIT MODEL NUMBER IDENTIFICATION GUIDE (single phase)

Digit Position: 1 2 3 4 5, 6 7 8 9 10 11 12

Example Part Number: N 4 H 3 18 G K E 1 0 0

Product Family

4 = R--410A REFRIGERANT

A = Air Conditioner

H = Heat Pump TYPE

3 = 13 SEER

4 = 14 SEER

5 = 15 SEER NOMINAL EFFICIENCY

18 = 18,000 BTUH = 1½tons

24 = 24,000 BTUH = 2 tons

30 = 30,000 BTUH = 2½tons

36 = 36,000 BTUH = 3 tons

42 = 42,000 BTUH = 3½tons

48 = 48,000 BTUH = 4 tons

60 = 60,000 BTUH = 5 tons NOMINAL CAPACITY

A = Standard Grille

G = Coil Guard Grille

C = Coastal FEATURES

K = 208/230--1--60 VOLTAGE

Sales Code

Engineering Revision

Extra Digit

ACCESSORIES PART NUMBER IDENTIFICATION GUIDE

Digit Position: 123456, 7 8, 9 10, 11

Example Part Number: N A S A 0 01 01 CH

N = Non--Branded BRANDING

A = Accessory PRODUCT GROUP

S = Split System (AC & HP) KIT USAGE

A = Original

B = 2nd Generation MAJOR SERIES

0 = Generic or Not Applicable

2=R--22

4 = R--410A REFRIGERANT

Product Identifier Number

Package Quantity

Type of Kit(Example: CH = Crankcase Heater)

TECHNICAL SUPPORT MANUAL Split System Heat Pump: N4H3

428 04 510201 3

R--410A QUICK REFERENCE GUIDE

•R--410A refrigerant operates at 50% -- 70% higher pressures than R--22. Be sure that servicing equipment and

replacement components are designed to operate with R--410A.

•R--410A refrigerant cylinders are rose colored.

•Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.

•R--410A systems should be charged with liquid refrigerant. Use a commercial type metering device in the

manifold hose when charging into suction line with compressor operating.

•Manifold sets should be 750 psig high--side and 200 psig low--side with 520 psig low--side retard.

•Use hoses with 750 psig service pressure rating.

•Leak detectors should be designed to detect HFC refrigerant.

•R--410A, as with other HFC refrigerants, is only compatible with POE oils.

•Vacuum pumps will not remove moisture from oil.

•Do not use liquid line filter--driers with rated working pressures less than 600 psig.

•Do not install a suction line filter--drier in liquid line.

•POE oils absorb moisture rapidly. Do not expose oil to atmosphere.

•POE oils may cause damage to certain plastics and roofing materials.

•Wrap all filter--driers and service valves with wet cloth when brazing.

•A liquid line filter--drier is required on every unit.

•Do not use with an R--22 TXV.

•If indoor unit is equipped with an R--22 TXV, it must be changed to an R--410A TXV.

•Never open system to atmosphere while it is under a vacuum.

•When system must be opened for service, break vacuum with dry nitrogen and replace all filter--driers. Evacuate

to 500 microns before recharging.

•Do not vent R--410A into the atmosphere.

•Do not use capillary tube indoor coils.

•Observe all WARNINGS,CAUTIONS, NOTES, and bold text.

International Comfort Products, LLC

Lewisburg, TN 37091 USA

TECHNICAL SUPPORT MANUAL Split System Heat Pump: N4H3

442804510201

1. Symbols are electrical representation only.

2. Compressor and fan motor furnished with inherent thermal protection.

3. To be wired in accordance with National Electric N.E.C. and local codes.

4. N.E.C. class 2, 24 V circuit, min. 40 VA required, 60 VA on units installed with LLS.

5. Connection for typical heat pump thermostat. For other arrangements see installation instructions.

6. Use copper conductors only. Use conductors suitable for at least 75° C (167° F).

7. If indoor section has a transformer with a grounded secondary, connect the grounded side to “C” on the circuit board.

8. When start capacitor and relay are installed, start thermistor (PTC) is not used.

9. CH not used on all units.

10. If any of the original wire, as supplied, must be replaced, use the same or equivalent wire.

11. Check all electrical connections inside control box for tightness.

12. Do not attempt to operate unit until service valves have been opened.

13. Do not rapid cycle compressor. Compressor must be off 3 minutes to allow pressures to equalize between high and low

side before starting.

Model Sizes: 18, 24, 30, 36, 42, 48

Notes:

336749--101 REV.A

TECHNICAL SUPPORT MANUAL Split System Heat Pump: N4H3

428 04 510201 5

Model Sizes: 18, 24, 30, 36, 42, 48

336749--101 REV.A

TECHNICAL SUPPORT MANUAL Split System Heat Pump: N4H3

642804510201

1. Symbols are electrical representation only.

2. Compressor and fan motor furnished with inherent thermal protection.

3. To be wired in accordance with National Electric N.E.C. and local codes.

4. N.E.C. class 2, 24 V circuit, min. 40 VA required, 60 VA on units installed with LLS.

5. Connection for typical heat pump thermostat. For other arrangements see installation instructions.

6. Use copper conductors only. Use conductors suitable for at least 75° C (167° F).

7. If indoor section has a transformer with a grounded secondary, connect the grounded side to “C” on the circuit board.

8. When start capacitor and relay are installed, start thermistor (PTC) is not used.

9. CH not used on all units.

10. If any of the original wire, as supplied, must be replaced, use the same or equivalent wire.

11. Check all electrical connections inside control box for tightness.

12. Do not attempt to operate unit until service valves have been opened.

13. Do not rapid cycle compressor. Compressor must be off 3 minutes to allow pressures to equalize between high and low

side before starting.

Notes:

Model Size: 60

TECHNICAL SUPPORT MANUAL Split System Heat Pump: N4H3

428 04 510201 7

Model Size: 60

TECHNICAL SUPPORT MANUAL Split System Heat Pump: N4H3

8428 04 5102 01

R--410A CHARGING CHART

Measured Liquid

Pressure (psig)

Rating Plate (required) Subcooling Temperature °F(°C)

°F (°C) °F (°C) °F (°C) °F(° C) F(° C) F (°C)

6 3 8 4 10 612 714 816 9

R--410A Required Liquid Line Temperature °F(°C)

251 78 26 76 24 74 23 72 22 70 21 68 20

259 80 27 78 26 76 24 74 23 72 22 70 21

266 82 28 80 27 78 26 76 24 74 23 72 22

274 84 29 82 28 80 27 78 26 76 24 74 23

283 86 30 84 29 82 28 80 27 78 26 76 24

291 88 31 86 30 84 29 82 28 80 27 78 26

299 90 32 88 31 86 30 84 29 82 28 80 27

308 92 33 90 32 88 31 86 30 84 29 82 28

317 94 34 92 33 90 32 88 31 86 30 84 29

326 96 36 94 34 92 33 90 32 88 31 86 30

335 98 37 96 36 94 34 92 33 90 32 88 31

345 100 38 98 37 96 36 94 34 92 33 90 32

364 104 40 102 39 100 38 98 37 96 36 94 34

374 106 41 104 40 102 39 100 38 98 37 96 36

384 108 42 106 41 104 40 102 39 100 38 98 37

395 110 43 108 42 106 41 104 40 102 39 100 38

406 112 44 110 43 108 42 106 41 104 40 102 39

416 114 46 112 44 110 43 108 42 106 41 104 40

427 116 47 114 46 112 44 110 43 108 42 106 41

439 118 48 116 47 114 46 112 44 110 43 108 42

450 120 49 118 48 116 47 114 46 112 44 110 43

462 122 50 120 49 118 48 116 47 114 46 112 44

474 124 51 122 50 120 49 118 48 116 47 114 46

TECHNICAL SUPPORT MANUAL Split System Heat Pump: N4H3

428 04 510201 9

MULTIPLYING FACTORS

(Refer to pages 7--13)

† Total capacities are net (I.D. blower heat subtracted) system capacities based on 25’ line set.

If additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacity may occur.

†† At TVA rating indoor condition (75 °Fdb, 63 °Fwb), all other indoor air temperatures are at 80 °Fdb

If additional tubing length and/or indoor unit is located above outdoor unit, a slight variation in capacity may occur.

* System amps are total of indoor and outdoor amps.

‡ Chart data is for 80°F indoor dry bulb. For indoor db temperatures other than 80°F, measure Indoor db and Indoor CFM, and plug these into the

formula below. Measure outdoor db and indoor wet bulb, apply these to the chart above, find MBh and S/T, and plug these into the formula below.

(Note: if indoor db is the only thing changing, total capacity, MBh, stays the same.)

Sensible Capacity at Indoor db LOWER than 80 °F=(MBhxS/T) -- ( 80 -- Indoor db ) x 835 x Indoor CFM

1000

()

Sensible Capacity at Indoor db HIGHER than 80 °F=(MBhxS/T)+

( Indoor db -- 80 ) x 835 x Indoor CFM

1000

()

TECHNICAL SUPPORT MANUAL Split System Heat Pump: N4H3

10 428 04 5102 01

2776††3626752776††3626752776††3626752776††3626752776††362675MFC

MBh† 16.57 17.25 17.63 19.20 21.1 8 15.8 6 16.3 4 16.6 9 18.1 7 20.2 1 14.8 6 15.1 6 15.6 2 17.06 19.0 7 13.70 13.73 13.86 15.82 17.7 4 12.5 3 12.5 6 12.2 7 13.8 5 16.30

S/T‡ 1.00 0.91 0.72 0.69 0.51 1.00 0.93 0.74 0.71 0.52 1.00 0.97 0.76 0.73 0.53 1.00 1.00 0.80 0.75 0.54 1.00 1.00 0.85 0.80 0.55

AMPS* 5.36 5.37 5.38 5.41 5.45 5.98 6.00 6.01 6.06 6.12 6.59 6.62 6.67 6.76 6.85 7.32 7.32 7.32 7.50 7.66 8.14 8.14 8.13 8.22 8.51

HI PR 269 272 273 276 282 311 313 314 31 9 325 352 354 358 365 372 400 400 400 41 3 424 453 453 452 458 477

LO PR 125 129 13 1 140 152 128 132 134 143 155 134 135 136 146 159 14 0 140 141 149 163 146 147 145 154 166

MBh† 17.35 17.73 18.07 19.62 21.5 8 16.5 9 16.7 7 17.0 5 18.5 8 20.5 9 15.7 4 15.7 7 15.9 6 17.40 19.4 4 14.46 14.49 14.24 16.13 18.0 8 13.1 8 13.2 0 12.5 6 14.2 1 16.60

S/T‡ 1.00 0.95 0.75 0.72 0.52 1.00 0.98 0.77 0.74 0.53 1.00 1.00 0.79 0.76 0.54 1.00 1.00 0.84 0.79 0.56 1.00 1.00 0.89 0.85 0.58

AMPS* 5.48 5.49 5.48 5.51 5.56 6.10 6.11 6.12 6.17 6.23 6.78 6.79 6.79 6.88 6.96 7.46 7.46 7.44 7.63 7.77 8.28 8.28 8.24 8.35 8.65

HI PR 272 273 274 278 283 314 314 315 32 0 326 359 359 360 366 373 403 403 402 41 5 425 456 456 453 461 480

LO PR 130 133 13 4 143 155 134 135 137 146 158 138 138 139 149 162 14 4 144 143 152 166 151 151 147 156 169

MBh† 18.03 18.14 18.39 19.94 21.8 6 17.2 0 17.2 2 17.3 4 18.8 8 20.8 8 16.3 2 16.3 4 16.2 2 17.66 19.7 1 15.13 15.16 14.5 5 16.3 7 18.3 6 13.7 3 13.7 6 12.8 1 14.4 9 16.80

S/T‡ 1.00 0.99 0.78 0.75 0.54 1.00 1.00 0.80 0.77 0.55 1.00 1.00 0.83 0.80 0.56 1.00 1.00 0.87 0.83 0.58 1.00 1.00 0.93 0.89 0.60

AMPS* 5.58 5.58 5.58 5.61 5.67 6.22 6.22 6.23 6.27 6.35 6.92 6.92 6.91 6.99 7.08 7.61 7.62 7.56 7.75 7.89 8.41 8.41 8.36 8.48 8.78

HI PR 274 274 275 279 285 316 316 317 321 328 362 362 361 36 8 375 408 408 404 417 427 459 459 455 463 482

LO PR 135 136 13 7 146 157 139 139 139 149 161 142 143 141 152 164 14 8 148 145 154 168 154 154 149 158 171

570756570756570756570756570756570756570756570756MFC

MBh† 5.41 5.1 5 4.8 7 7.5 4 7.2 7 6.9 9 10.0 8 9.5 8 9.2 7 12.3 8 12.1 5 11.9 2 14.9 0 14.6 3 14.3 5 17.6 9 17.39 17.0 7 19.9 8 19.8 0 19.5 9 22.1 5 22.0 3 21.88

T/R 10.30 9.80 9.20 14.40 13.8 0 13.3 0 19.2 0 18.2 0 17.6 0 23.6 0 23.1 0 22.6 0 28.40 27.80 27.20 33.70 33.00 32.4 0 38.0 0 37.6 0 37.1 0 42.2 0 41.9 0 41.50

AMPS* 4.78 4.98 5.19 5.01 5.22 5.45 5.26 5.46 5.70 5.48 5.73 5.99 5.74 6.00 6.28 6.06 6.36 6.65 6.32 6.62 6.94 6.61 6.94 7.28

HI PR 216 231 247 231 247 264 251 266 283 269 287 306 293 31 1 329 319 339 358 340 360 381 362 384 406

LO PR 39 39 40 50 50 50 62 62 63 76 76 77 92 92 93 11 0 11 0 11 1 124 126 127 138 140 142

MBh† 5.52 5.2 7 4.9 8 7.6 7 7.4 1 7.1 3 10.2 3 9.7 5 9.4 4 12.5 5 12.3 3 12.0 9 15.1 3 14.8 5 14.5 7 17.81 17.6 0 17.3 3 19.8 1 19.7 2 19.5 7 21.6 2 21.6 5 21.60

T/R 9.20 8.80 8.30 12.80 12.3 0 11.8 0 17.0 0 16.2 0 15.7 0 20.9 0 20.5 0 20.1 0 25.20 24.70 24.20 29.70 29.30 28.70 33.0 0 32.8 0 32.5 0 36.0 0 36.0 0 35.80

AMPS* 4.84 5.04 5.25 5.04 5.26 5.48 5.27 5.47 5.71 5.45 5.70 5.96 5.69 5.95 6.22 5.94 6.23 6.53 6.15 6.46 6.77 6.36 6.70 7.04

HI PR 213 229 245 227 243 260 244 259 277 261 279 297 282 30 0 319 304 324 344 321 342 364 338 361 384

LO PR 39 39 40 50 50 50 62 62 63 76 76 76 92 92 93 108 11 0 11 1 120 123 125 131 135 137

MBh† 5.62 5.3 7 5.0 9 7.7 9 7.5 4 7.2 6 10.3 6 9.9 3 9.5 9 12.7 1 12.4 8 12.2 4 15.3 2 15.0 4 14.7 6 17.79 17.6 6 17.4 7 19.6 1 19.5 4 19.4 7 20.9 9 21.1 1 21.18

T/R 8.30 7.90 7.50 11.5 0 11.1 0 10.7 0 15.3 0 14.7 0 14.1 0 18.8 0 18.5 0 18.1 0 22.70 22.2 0 21.80 26.3 0 26.10 25.8 0 29.1 0 28.9 0 28.7 0 31.1 0 31.20 31.20