Lenox Elite Series XP16 Units Heat Pumps Normal Operating Pressures, Temperature Pressures

Page 29

NORMAL OPERATING PRESSURES

Use the following tables to perform maintenance checks; it is not a procedure for charging the system. Minor variations in these pressures may be due to differences in installations. Significant deviations could mean that the system is not properly charged or that a problem exists with some component in the system.

Typical pressures only, expressed in psig (liquid +/− 10 and vapor +/− 5 psig); matched indoor component (air handler or coil), indoor air quality, and indoor load will cause the pressures to vary.

Table 7. Normal Operating Pressures*

Normal Operating Pressures − Cooling

XP16

−024

−036

−048

−060

 

 

 

 

 

 

 

 

 

°F

Liq

Vap

Liq

Vap

Liq

Vap

Liq

Vap

(°C)**

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

First Stage (Low Capacity) Pressure

 

 

 

 

 

 

 

 

 

 

 

65

226

144

220

141

224

143

230

137

(18.3)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75

260

145

254

144

259

143

267

139

(23.9)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85

301

148

295

148

302

147

311

141

(29.4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

95

346

151

340

150

346

149

357

144

(35.0)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

105

396

153

389

153

396

152

398

147

(40.6)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

115

451

156

444

156

450

155

453

149

(46.1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Second Stage (High Capacity) Pressure

 

 

 

 

 

 

 

 

 

 

 

65

241

140

232

129

238

138

232

131

(18.3)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

75

279

142

269

136

278

140

276

133

(23.9)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

85

321

144

312

140

321

142

320

136

(29.4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

95

369

146

346

142

372

144

367

138

(35.0)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

105

421

148

409

145

424

147

421

141

(40.6)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

115

480

151

465

148

481

149

479

144

(46.1)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Normal Operating Pressures − Heating

 

 

 

 

 

 

 

 

 

First Stage (Low Capacity) Pressure

 

 

 

 

 

 

 

 

 

 

 

50

312

112

350

115

336

114

385

108

(10)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

60

330

130

372

136

363

135

414

126

(15.5)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Second Stage (High Capacity) Pressure

 

 

 

 

 

 

 

 

 

 

 

20

299

64

321

61

289

57

332

59

(−7.0)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30

312

79

347

74

294

69

349

67

(−1.0)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

40

325

93

367

90

321

80

361

75

(4.4)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

50

344

110

387

110

341

110

383

85

(10)

 

 

 

 

 

 

 

 

60

(15.5) 358 128 395 131 361 128 425 122

** Temperature of air entering outdoor coil.

TEMPERATURE PRESSURES

Compute subcooling by determining saturated condensing temperature from temperature pressure chart. Subtract from liquid temperature entering TXV.

Table 8. HFC−410A Temperature (°F) −

Pressure (Psig)

°F

Psig

°F

Psig

°F

Psig

°F

Psig

 

 

 

 

 

 

 

 

32

100.8

63

178.5

94

290.8

125

445.9

 

 

 

 

 

 

 

 

33

102.9

64

181.6

95

295.1

126

451.8

 

 

 

 

 

 

 

 

34

105.0

65

184.3

96

299.4

127

457.6

 

 

 

 

 

 

 

 

35

107.1

66

187.7

97

303.8

128

463.5

 

 

 

 

 

 

 

 

36

109.2

67

190.9

98

308.2

129

469.5

 

 

 

 

 

 

 

 

37

111.4

68

194.1

99

312.7

130

475.6

 

 

 

 

 

 

 

 

38

113.6

69

197.3

100

317.2

131

481.6

 

 

 

 

 

 

 

 

39

115.8

70

200.6

101

321.8

132

487.8

 

 

 

 

 

 

 

 

40

118.0

71

203.9

102

326.4

133

494.0

 

 

 

 

 

 

 

 

41

120.3

72

207.2

103

331.0

134

500.2

 

 

 

 

 

 

 

 

42

122.6

73

210.6

104

335.7

135

506.5

 

 

 

 

 

 

 

 

43

125.0

74

214.0

105

340.5

136

512.9

 

 

 

 

 

 

 

 

44

127.3

75

217.4

106

345.3

137

519.3

 

 

 

 

 

 

 

 

45

129.7

76

220.9

107

350.1

138

525.8

 

 

 

 

 

 

 

 

46

132.2

77

224.4

108

355.0

139

532.4

 

 

 

 

 

 

 

 

47

134.6

78

228.0

109

360.0

140

539.0

 

 

 

 

 

 

 

 

48

137.1

79

231.6

110

365.0

141

545.6

 

 

 

 

 

 

 

 

49

139.6

80

235.3

111

370.0

142

552.3

 

 

 

 

 

 

 

 

50

142.2

81

239.0

112

375.1

143

559.1

 

 

 

 

 

 

 

 

51

144.8

82

242.7

113

380.2

144

565.9

 

 

 

 

 

 

 

 

52

147.4

83

246.5

114

385.4

145

572.8

 

 

 

 

 

 

 

 

53

150.1

84

250.3

115

390.7

146

579.8

 

 

 

 

 

 

 

 

54

152.8

85

254.1

116

396.0

147

586.8

 

 

 

 

 

 

 

 

55

155.5

86

258.0

117

401.3

148

593.8

 

 

 

 

 

 

 

 

56

158.2

87

262.0

118

406.7

149

601.0

 

 

 

 

 

 

 

 

57

161.0

88

266.0

119

412.2

150

608.1

 

 

 

 

 

 

 

 

58

163.9

89

270.0

120

417.7

151

615.4

 

 

 

 

 

 

 

 

59

166.7

90

274.1

121

423.2

152

622.7

 

 

 

 

 

 

 

 

60

169.6

91

278.2

122

428.8

153

630.1

 

 

 

 

 

 

 

 

61

172.6

92

282.3

123

434.5

154

637.5

 

 

 

 

 

 

 

 

62

175.4

93

286.5

124

440.2

155

645.0

 

 

 

 

 

 

 

 

Page 29

XP16 SERIES

Image 29
Contents General Table of ContentsShipping and Packing List Model Number Identification Unit Dimensions − inches mmSide View XP16−024 Base Section XP16 Base with LegsDetail a Typical Unit Parts ArrangementCaps and Fasteners Torque Requirements Operating Service Valves Operating Gauge Set and Service ValvesUsing Manifold Gauge SET To Access Service Port Operating Ball−Type Service Valve1DISCONNECT Power Recovering Refrigerant from Existing System3RECOVERING Refrigerant Method Method 2 LimitationsNew Outdoor Unit Placement Placement, Slab Mounting and Stabilizing Unit Detail a Outside Unit PlacementLouvered Panel Removal Removing and Installing PanelsLouvered Panel Installation Using Existing Line SET NEW or Replacement Line SET InstallationLine Set Requirements Adding Polyol Ester OIL RequirementsRefrigerant Line SET Alling Horizontal Runs Refrigerant Line SET From Vertical to HorizontalBrazing Connections 1CUT and Debur Brazing ProceduresFlow Nitrogen Wrap Service Valves6BRAZE Line SET 7PREPARATION for Next Step2CONNECT Gauges and Equipment for Flushing Procedure Indoor Expansion Valve Installation Installing New Indoor Metering DeviceSensing Bulb Installation Equalizer Line InstallationTest for Leaks S S S Evacuating Line Set and Indoor Coil2INSTALL Thermostat Size Circuit and Install DisconnectElectrical Connections 24VAC TransformerLOW Voltage Connections 4HIGH Voltage Power Supply ConnectionsTypical Field Wiring Typical Unit Wiring Diagram −024, −036 and −048 Only Typical Unit Wiring Diagram −060 Only Unit START−UP Unit Start−UpCalculating System Charge for Outdoor Unit Void of Charge Leak CHECK, Repair and EvacuateConnect Manifold Gauge SET and Weigh in Charge Indoor Unit Connections for Optimizing System ChargeOptimizing System Refrigerant Charge Optimizing ProcedureAdjusting Indoor Airflow SCº = SATºLIQº XP16−060−230 XP16−036−230XP16−048−230 Normal Operating Pressures Temperature PressuresUnit Components System OperationDS2 Green LED FAN TWO Connectors DelayTest 24VACDS2 DS1 Demand Defrost Control A108 Diagnostic LedsSlow OFFSECOND−STAGE Operation Defrost System Defrost Control CONNECTIONS, Jumpers Settings and FeaturesEmergency Heat Amber Light Defrost System OverviewDefrost Cycle Actuation Compressor Delay Mode P5Operational Mode Overview Temperature Mode TIME/TEMPERATURE Mode Demand Mode Thirty 30 Minute TimeDefrost HOW did Defrost TERMINATE?Degrees Resistance Fahrenheit 136.3 2680 High Discharge Sensor RT28 Temperature / Resistance Range S S Test Pin P1 FunctionsProcedure MaintenanceTwo−Stage Modulation Compressors Checks Tools RequiredHomeowner Compressor TemperatureOutdoor Unit FAN Motor PressuresStart UP Checks Cooling ModeXP16 Start−Up and Performance