Table 12A — Thermistor Temperature (F) vs. Resistance/Voltage Drop

TEMPERATURE

PIC II

RESISTANCE

 

TEMPERATURE

PIC II

RESISTANCE

 

TEMPERATURE

PIC II

RESISTANCE

VOLTAGE

 

VOLTAGE

 

VOLTAGE

(F)

(Ohms)

 

(F)

(Ohms)

 

(F)

(Ohms)

DROP (V)

 

DROP (V)

 

DROP (V)

 

 

 

 

 

 

 

 

–25

4.700

98,010

60

2.756

7,665

145

0.769

1,141

–24

4.690

94,707

61

2.724

7,468

146

0.756

1,118

–23

4.680

91,522

62

2.692

7,277

147

0.744

1,095

–22

4.670

88,449

63

2.660

7,091

148

0.731

1,072

–21

4.659

85,486

64

2.628

6,911

149

0.719

1,050

–20

4.648

82,627

65

2.596

6,735

150

0.707

1,029

–19

4.637

79,871

66

2.565

6,564

151

0.696

1,007

–18

4.625

77,212

67

2.533

6,399

152

0.684

986

–17

4.613

74,648

68

2.503

6,238

153

0.673

965

–16

4.601

72,175

69

2.472

6,081

154

0.662

945

–15

4.588

69,790

70

2.440

5,929

155

0.651

925

–14

4.576

67,490

71

2.409

5,781

156

0.640

906

–13

4.562

65,272

72

2.378

5,637

157

0.630

887

–12

4.549

63,133

73

2.347

5,497

158

0.619

868

–11

4.535

61,070

74

2.317

5,361

159

0.609

850

–10

4.521

59,081

75

2.287

5,229

160

0.599

832

–9

4.507

57,162

76

2.256

5,101

161

0.589

815

–8

4.492

55,311

77

2.227

4,976

162

0.579

798

–7

4.477

53,526

78

2.197

4,855

163

0.570

782

–6

4.461

51,804

79

2.167

4,737

164

0.561

765

–5

4.446

50,143

80

2.137

4,622

165

0.551

750

–4

4.429

48,541

81

2.108

4,511

166

0.542

734

–3

4.413

46,996

82

2.079

4,403

167

0.533

719

–2

4.396

45,505

83

2.050

4,298

168

0.524

705

–1

4.379

44,066

84

2.021

4,196

169

0.516

690

0

4.361

42,679

85

1.993

4,096

170

0.508

677

1

4.344

41,339

86

1.965

4,000

171

0.499

663

2

4.325

40,047

87

1.937

3,906

172

0.491

650

3

4.307

38,800

88

1.989

3,814

173

0.484

638

4

4.288

37,596

89

1.881

3,726

174

0.476

626

5

4.269

36,435

90

1.854

3,640

175

0.468

614

6

4.249

35,313

91

1.827

3,556

176

0.460

602

7

4.229

34,231

92

1.800

3,474

177

0.453

591

8

4.209

33,185

93

1.773

3,395

178

0.445

581

9

4.188

32,176

94

1.747

3,318

179

0.438

570

10

4.167

31,202

95

1.721

3,243

180

0.431

561

11

4.145

30,260

96

1.695

3,170

181

0.424

551

12

4.123

29,351

97

1.670

3,099

182

0.418

542

13

4.101

28,473

98

1.644

3,031

183

0.411

533

14

4.079

27,624

99

1.619

2,964

184

0.404

524

15

3.056

26,804

100

1.595

2,898

185

0.398

516

16

4.033

26,011

101

1.570

2,835

186

0.392

508

17

4.009

25,245

102

1.546

2,773

187

0.385

501

18

3.985

24,505

103

1.523

2,713

188

0.379

494

19

3.960

23,789

104

1.499

2,655

189

0.373

487

20

3.936

23,096

105

1.476

2,597

190

0.367

480

21

3.911

22,427

106

1.453

2,542

191

0.361

473

22

3.886

21,779

107

1.430

2,488

192

0.356

467

23

3.861

21,153

108

1.408

2,436

193

0.350

461

24

3.835

20,547

109

1.386

2,385

194

0.344

456

25

3.808

19,960

110

1.364

2,335

195

0.339

450

26

3.782

19,393

111

1.343

2,286

196

0.333

445

27

3.755

18,843

112

1.321

2,239

197

0.328

439

28

3.727

18,311

113

1.300

2,192

198

0.323

434

29

3.700

17,796

114

1.279

2,147

199

0.318

429

30

3.672

17,297

115

1.259

2,103

200

0.313

424

31

3.644

16,814

116

1.239

2,060

201

0.308

419

32

3.617

16,346

117

1.219

2,018

202

0.304

415

33

3.588

15,892

118

1.200

1,977

203

0.299

410

34

3.559

15,453

119

1.180

1,937

204

0.294

405

35

3.530

15,027

120

1.161

1,898

205

0.290

401

36

3.501

14,614

121

1.143

1,860

206

0.285

396

37

3.471

14,214

122

1.124

1,822

207

0.281

391

38

3.442

13,826

123

1.106

1,786

208

0.277

386

39

3.412

13,449

124

1.088

1,750

209

0.272

382

40

3.382

13,084

125

1.070

1,715

210

0.268

377

41

3.353

12,730

126

1.053

1,680

211

0.264

372

42

3.322

12,387

127

1.036

1,647

212

0.260

367

43

3.291

12,053

128

1.019

1,614

213

0.256

361

44

3.260

11,730

129

1.002

1,582

214

0.252

356

45

3.229

11,416

130

0.986

1,550

215

0.248

350

46

3.198

11,112

131

0.969

1,519

216

0.245

344

47

3.167

10,816

132

0.953

1,489

217

0.241

338

48

3.135

10,529

133

0.938

1,459

218

0.237

332

49

3.104

10,250

134

0.922

1,430

219

0.234

325

50

3.074

9,979

135

0.907

1,401

220

0.230

318

51

3.042

9,717

136

0.893

1,373

221

0.227

311

52

3.010

9,461

137

0.878

1,345

222

0.224

304

53

2.978

9,213

138

0.864

1,318

223

0.220

297

54

3.946

8,973

139

0.849

1,291

224

0.217

289

55

2.914

8,739

140

0.835

1,265

225

0.214

282

56

2.882

8,511

141

0.821

1,240

 

 

 

 

57

2.850

8,291

142

0.808

1,214

 

 

 

 

58

2.819

8,076

143

0.795

1,190

 

 

 

 

59

2.788

7,868

 

144

0.782

1,165

 

 

 

 

85

Page 85
Image 85
Carrier XRV, 19XR specifications Thermistor Temperature F vs. Resistance/Voltage Drop

19XR, XRV specifications

The Carrier 19XR and 19XRV chillers are sophisticated cooling solutions that represent the forefront of HVAC technology. Designed for large commercial and industrial applications, these chillers provide exceptional performance, energy efficiency, and reliability, making them ideal for a variety of environments ranging from hospitals to manufacturing facilities.

One of the most significant features of the Carrier 19XR and 19XRV chillers is their advanced scroll compressor technology. These units employ a tandem scroll design that enhances efficiency while minimizing operational noise. This makes them ideal for urban environments where noise restrictions may be in place. Moreover, the compressors are equipped with variable speed drive options in the 19XRV model, which allows for greater energy savings by adjusting cooling output based on real-time demand.

In addition to their advanced compressors, the 19XR and 19XRV units incorporate the Carrier GreenChoice refrigerant, which has a lower global warming potential compared to traditional refrigerants. This innovative choice not only meets regulatory requirements but also contributes to sustainability goals, making these chillers a responsible choice for environmentally conscious organizations.

The units are engineered with a robust heat exchanger design, which enhances heat transfer efficiency and overall system performance. This ensures optimal operation even in extreme conditions. They feature a microprocessor-based control system that allows for precise monitoring and control of the chiller’s performance, enabling operators to make real-time adjustments to maximize energy efficiency.

The Carrier 19XR and 19XRV chillers also prioritize serviceability. The design incorporates easy access to key components, simplifying maintenance procedures and reducing downtime. This focus on maintainability extends the lifespan of the equipment, leading to lower lifecycle costs.

In terms of connectivity, these chillers are equipped with advanced Building Management System (BMS) integration capabilities. This allows for seamless monitoring and control of the chillers using a centralized platform, facilitating energy management and operational optimization.

Overall, the Carrier 19XR and 19XRV chillers stand out in the market for their blend of cutting-edge technology, energy efficiency, and user-friendly features. They are engineered to meet the demanding needs of modern commercial and industrial applications, making them a preferred choice for facility managers seeking reliable cooling solutions.