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Operating Temperatures and Pressures

LM Series Heat Pump

LM Series Heat Pump

8 733 905 315 (2013/9)

Subject to change without prior notice

OPERATING TEMPERATURES AND
PRESSURES

Operating Temperatures and Pressures

COOLING

HEATING

Model

Entering

Water

Temp. F

Wat

er

Flow

Suction

Pressure

PSIG

Discharge

Pressure

PSIG

Water

Temp

Rise °F

Air

Temp

Drop °F

Suction

Pressure

PSIG

Discharge

Pressure

PSIG

Water

Temp

Drop

Air

Temp

Rise °F

LM024

Part

Load

30°

4

75-91

264-322

5-6

15-17

8

79-96

270-331

3-4

16-18

40°

4

88-107

277-339

6-7

17-20

8

115-140

175-214

8-9

19-23

92-112

284-348

4-5

18-21

50°

4

129-157

218-267

14-17

18-20

98-122

291-356

7-8

20-23

8

124-151

204-250

8-9

19-22

110-130

298-364

5-6

21-24

60°

4

134-163

249-305

13-16

17-20

112-136

304-372

8-10

22-26

8

128-156

233-287

8-9

18-21

117-143

312-381

6-7

23-28

70°

4

138-168

281-341

13-16

17-19

124-152

318-389

9-11

24-29

8

133-161

263-323

7-9

18-21

131-159

325-398

6-8

26-31

80°

4

143-174

317-388

13-16

16-19

136-166

331-405

11-13

27-32

8

137-167

297-366

7-9

17-20

143-174

339-415

7-9

28-33

90°

4

147-179

357-437

13-16

16-18

149-181

345-422

12-14

29-35

8

141-172

335-411

7-9

17-20

156-190

352-432

8-10

31-37

100°

4

151-185

402-492

13-15

15-18

8

146-177

378-459

7-9

16-19

LM024

Full

Load

30°

4

76-92

242-297

3-4

13-14

8

80-97

249-304

2-3

13-15

40°

4

125-151

180-221

14-18

19-22

89-108

255-312

4-5

15-17

8

120-146

169-207

8-10

20-23

93-113

261-320

3-3

16-18

50°

4

134-163

211-258

14-18

18-21

106-118

267-327

5-6

17-19

8

129-157

198-242

8-10

19-23

110-126

274-335

3-4

18-21

60°

4

139-169

241-295

14-17

18-21

113-138

280-342

6-7

19-22

8

134-163

227-278

8-10

19-22

119-145

287-351

4-5

20-23

70°

4

144-175

272-333

14-17

17-20

126-155

292-358

7-8

21-24

8

138-168

255-313

8-10

18-21

133-162

300-367

5-6

22-26

80°

4

148-181

307-375

14-17

17-19

138-168

305-373

8-9

23-27

8

143-174

288-353

8-10

18-21

145-177

312-382

5-6

24-29

90°

4

153-186

346-423

14-17

16-19

151-184

317-388

8-10

25-29

8

147-179

325-398

8-9

17-20

158-193

325-398

6-7

26-31

100°

4

158-191

389-477

13-16

16-18

8

152-185

366-448

8-9

17-20

This chart shows approximate temperatures and pressures for a unit in good repair. The values shown are meant as
a guide only and should not be used to estimate system charge. This chart assumes rated air flow and 80º d.b./67º
w.b. entering air temperature in cooling, 70º d.b. entering air temperature in heating. Heating data at entering fluid
temperatures below 50º assumes the use of antifreeze. As a result of continuing research and development,
specifications are subject to change without notice.

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Содержание LM Series

Страница 1: ...Installation Operation and Maintenance Manual LM Series Heat Pump 8 733 905 315 2013 9 LM024 LM036 LM048 LMO60 LM070 ...

Страница 2: ...ectric Heat 15 Constant Airflow Motor 15 Fan Status Switch 15 Pump Status Switch 15 DPS Water Flow Proving 16 Valve End Switch 16 Pump Relay 16 Sequence of Operation 16 Cooling Mode 16 Heating Mode 16 Application Considerations 18 Cooling Tower Boiler Systems 18 Geothermal Systems 20 System Checkout 21 Unit Start up 21 Maintenance 21 Access to Internal Components for Vertical VT Units 22 Unit Chec...

Страница 3: ...ock could cause personal injury or death When working on equipment always observe precautions described in the literature tags and labels attached to the unit Follow all safety codes Wear safety glasses and work gloves Use a quenching cloth for brazing and place a fire extinguisher close to the work area All refrigerant discharged from this unit must be recovered WITHOUT EXCEPTION Technicians must...

Страница 4: ...Hot Gas Reheat Electric Heat Sound Package Smart Start Constant Airflow Blower Motor 2 4 sided filter racks MERV 8 13 filters Differential Pressure Switch DPS Water Flow Proving Switch Auxiliary Pump Relay Air Flow Proving Sensor Zone Valve and Internal Water Pump See Pg 15 for more detail Safety devices are built into each unit to provide the maximum system protection possible when properly insta...

Страница 5: ...led damages not discovered until after removing the units from the packaging must be reported to the carrier within 24 hours of receipt LOCATION Locate the unit in an indoor area that allows easy removal of the filter and access panels with enough room for service personnel to perform maintenance or repair Provide sufficient room to make fluid electrical and duct connection s If the unit is locate...

Страница 6: ...d to the ceiling Refer to the hanging bracket assembly and installation instructions for details Plumbing connected to the heat pump must not come in direct contact with joists trusses walls etc Some applications require an attic floor installation of the horizontal unit In this case the unit should be set in a full size secondary drain pan on top of a vibration absorbing mesh The Secondary drain ...

Страница 7: ...ion of the unit to uninsulated duct work is not recommended as the unit s performance will be adversely affected The factory provided air filter must be removed when using a filter back return air grill The factory filter should be left in place on a free return system If the unit will be installed in a new installation which includes new duct work the installation should be designed using current...

Страница 8: ...maximum fuse or breaker size The unit is provided with a concentric knock out for attaching common trade sizes of conduit route power supply wiring through this opening Always connect the ground lead to the grounding lug provided in the control box and power leads to the line side of compressor contactor as indicated on the wiring diagram Figures 25 through 31 Pg 38 through Pg 47 Never use flexibl...

Страница 9: ... Module UPM 7 Terminal block Low Voltage 8 Auxiliary Relay Option 9 Transformer 10 Capacitor 11 ECM Interface Board Option mounts on E Box cover 12 Phase Monitor 13 Fan Status Switch Option 14 Pump Status Switch Option 15 Terminal Block 460V Units Option 16 Comfort Alert Module Option 17 DDC Option 18 LonWorks Card Option 19 Input Expansion Module Option 20 Smart Start Assist Option 21 Ground Lug ...

Страница 10: ...mperature between condensing water coil and thermal expansion valve If temperature drops below or remains at freeze limit trip for 30 seconds the controller will shut down the compressor and enter into a soft lockout condition The default freeze limit trip is 30 F however this can be changed to 15 F by cutting the R30 or Freeze1 resistor located on top of DIP switch SW1 Refer to Figure 9 item 3 fo...

Страница 11: ...at the same time after power up or after a power interruption thus avoiding creating large electrical spike LOW PRESSURE BYPASS TIMER If the compressor is running and the low pressure switch opens the controller will keep the compressor ON for 120 seconds If after 120 seconds the low pressure switch remains open the controllers will shut down the compressor and enter a soft lockout The compressor ...

Страница 12: ...own and enter into a soft lockout condition Both the status LED and the Alarm contact will be active The LED will flash three 3 times the code associated with this alarm condition If this alarm occurs 2 times or 4 if Dip switch is set to 4 within an hour the UPM controller will enter into a hard lockout condition It will constantly monitor the refrigerant temperature with the sensor mounted close ...

Страница 13: ...t approximately 100 CFM of air delivery so if the LED blinks 12 times pauses blinks 12 times etc the blower is delivering approximately 1200 CFM Airflow Selector The airflow selector Figure 13 items 2 3 allows airflow adjustment to meet application requirements and to ease troubleshooting CFM Selector FIg 13 Item 2 must remain with only A being enabled ADJUST Selector can be adjusted to NOM or TES...

Страница 14: ...from these connections to avoid accidental short circuits that can damage unit control components CONSTANT TORQUE MOTORS ECM For installations where the efficiency of an electronically commutated brushless DC motor ECM motor is required but the features of a constant airflow motor are not required the LM series comes standard with the constant torque ECM motor option These motors feature up to 90 ...

Страница 15: ...rse cycle heating refrigeration heating as emergency backup heat Availability matrix including available nominal kW capacities is shown below Constant Airflow Motor The Constant Airflow Motor is an Electronic Commutated Motor ECM that provides a constant air flow over a wide range of external static pressures while optimizing the power consumption of the motor This option allows the unit to have d...

Страница 16: ... of compressor capacity starts When the thermostat calls for second stage cooling Y2 the second stage or full compressor capacity is initiated The fan ramps up to full cooling air flow Once the thermostat is satisfied the compressor shuts down and the fan ramps down to either fan only mode or off over a span of 30 seconds Heating Mode The first two stages of heating Y1 Y2 operate in the same manne...

Страница 17: ...COUNT 2 Start Timer Start Timer CC Output On CC Output Off Blink Code On Status LED Report Alarm Fault Hard Lockout ALR Output On Pulse Blink Code On Status LED Soft Lockout Record Alarm Start Counter If Applicable Start Anti Short Cycle Start Random Start Up Lockout Can Be Set To 4 Via Dip Switch Power Switchs Sensor Status Check LEGEND HPC HIGH PRESSURE CUTOUT LPC LOW PRESSURE CUTOUT FRZ FREEZE ...

Страница 18: ...vertighten the connections Flexible hoses should be used between the unit and the rigid system to avoid possible vibration Ball valves should be installed in the supply and return lines for unit isolation and unit water flow balancing Pressure temperature ports are recommended in both supply and return lines for system flow balancing Water flow can be accurately set by measuring the water to refri...

Страница 19: ...age control connection 3 P T ports optional 4 Hose kits optional 5 Ball valves 6 Supply and return line of central system 7 Flex duct connection 8 Hanging bracket assembly 9 Threaded rod 10 Hanging bracket assembly Note Diagram shows typical installation and is for illustration purposes only Ensure access to Heat Pump is not restricted ...

Страница 20: ...freeze solutions are utilized when low evaporating conditions are expected to occur Refer to the GLP installation manuals for more specific instructions Figure Figure 16 1 Line voltage disconnect unit 2 Flex duct Connection 3 Low voltage control connection 4 Line voltage connection unit 5 P T ports 6 Vibration pad 7 Condensate drain connection 8 Ground loop connection kit 9 Ground loop pumping pac...

Страница 21: ...mode 2 Set the thermostat to the highest setting 3 Set the thermostat system switch to COOL and the fan switch to the AUTO position The reversing valve solenoid should energize The compressor and fan should not run 4 Reduce the thermostat setting approximately 5 degrees below the room temperature 5 Verify the heat pump is operating in the cooling mode 6 Turn the thermostat system switch to the OFF...

Страница 22: ...lems air flow problems or air temperature problems Use of the pressure and temperature charts for the unit may be required to properly determine the cause Access to Internal Components for Vertical VT Units 1 Using a Flat screw driver remove and retain Panel Belt by inserting the screwdriver into the slot and releasing the catch Figures 17 and 18 Figure 17 Figure 18 2 Remove and retain lower panel...

Страница 23: ...ow gpm ______________________________ ______________________________ Compressor Volts Amps _______________ _____________ _______________ _____________ Blower Motor Volts Amps _______________ _____________ _______________ _____________ Source Fluid Type ______________________________ ______________________________ Fluid Flow gpm ______________________________ ______________________________ Fluid Si...

Страница 24: ...g the unit should run in the cooling mode reversing valve energized Set unit to HEAT and the highest temperature setting the unit should run in the heating mode If neither the blower or compressor run in all three cases the thermostat could be miswired or faulty To ensure miswired or faulty thermostat verify 24 volts is available on the condensing section low voltage terminal strip between R and C...

Страница 25: ...oads Thermostat Thermostat installed near a supply air grill relocate thermostat Readjust heat anticipator Wiring and controls Check for defective or improperly calibrated low pressure switch INSUFFICIENT COOLING OR HEATING Unit undersized Recalculate heating and or cooling loads If excessive possibly adding insulation and shading will rectify the problem Loss of conditioned air by leakage Check f...

Страница 26: ...nding LM024 1 1 64 1 30 2 2 17 1 48 3 2 153 2 153 1 763 4 8 60 8 60 7 30 LM036 1 1 52 0 88 2 1 15 1 22 3 1 53 1 53 1 21 4 5 87 5 87 4 86 LM048 1 1 86 0 52 2 0 88 0 70 3 1 03 1 03 0 4 4 17 4 17 0 LM060 1 1 63 0 39 2 0 87 0 52 3 0 68 0 68 0 4 3 20 3 2 0 LM070 1 1 85 0 34 3 0 60 0 60 0 4 2 52 2 52 0 Tolerance 7 All resistance values must be measured with compressor at room temperature ...

Страница 27: ...oubleshooting Information Solution YELLOW ALERT FLASH CODE 3 Short Cycling Compressor is running only briefly 1 Thermostat demand signal is intermittent 2 Time delay relay or control board defective 3 If high pressure switch present go to Flash Code 2 information 4 If low pressure switch present go to Flash Code 1 information YELLOW ALERT FLASH CODE 4 Locked Rotor 1 Run capacitor has failed may no...

Страница 28: ...pressor start wiring or connections Check wiring and connectors between supply and the compressor S terminal 3 Compressor start winding is damaged Check compressor motor winding resistance YELLOW ALERT FLASH CODE 7 Open Run Circuit Current only in start circuit 1 Open circuit in compressor run wiring or connections Check wiring and connectors between supply and the compressor R terminal 2 Compress...

Страница 29: ...structions in the thermostat for detailed installation and operation information Figure 22 When using a 2 cool 3 heat thermostat both the W1 W2 on the Heat Pump and W2 EM on the thermostat must be connected together via a jumper See Figure 22 THERMOSTAT PACKAGED HEAT PUMP Y1 G C O R Y1 G B R W2 C O E B W1 W2 Y2 Y2 Packaged heat pumps are equipped with detachable Thermostat connectors These connect...

Страница 30: ...1 185 402 492 13 15 15 18 8 146 177 378 459 7 9 16 19 LM024 Full Load 30 4 76 92 242 297 3 4 13 14 8 80 97 249 304 2 3 13 15 40 4 125 151 180 221 14 18 19 22 89 108 255 312 4 5 15 17 8 120 146 169 207 8 10 20 23 93 113 261 320 3 3 16 18 50 4 134 163 211 258 14 18 18 21 106 118 267 327 5 6 17 19 8 129 157 198 242 8 10 19 23 110 126 274 335 3 4 18 21 60 4 139 169 241 295 14 17 18 21 113 138 280 342 ...

Страница 31: ... 4 5 15 18 9 0 117 143 172 210 8 10 20 24 91 111 263 322 3 3 16 19 50 4 5 131 160 214 261 14 18 18 22 95 105 269 329 5 6 17 20 9 0 126 154 201 245 8 10 19 24 100 125 276 337 3 4 18 22 60 4 5 136 166 244 298 14 17 18 22 111 136 282 344 6 7 19 23 9 0 131 160 230 281 8 10 19 23 117 143 289 353 4 5 20 24 70 4 5 141 172 275 336 14 17 17 21 124 152 294 360 7 8 21 25 9 0 135 165 258 316 8 10 18 22 131 16...

Страница 32: ...23 84 102 291 356 7 9 18 22 12 0 113 138 182 223 12 14 20 24 88 108 299 365 5 6 19 23 50 6 0 127 155 226 276 21 25 18 22 92 110 305 373 9 11 20 25 12 0 122 149 213 260 12 14 19 24 98 120 313 383 6 7 21 26 60 6 0 131 160 259 316 21 25 18 22 108 132 320 391 10 13 23 28 12 0 126 154 243 297 12 14 19 23 113 138 328 400 7 9 24 29 70 6 0 136 166 291 355 20 25 17 21 120 147 334 408 12 15 25 31 12 0 130 1...

Страница 33: ...7 8 22 26 14 0 114 139 170 208 11 14 22 27 86 105 283 346 5 6 23 28 50 7 0 120 147 215 263 15 18 20 25 93 114 299 365 8 9 24 29 14 0 117 143 201 246 11 14 21 26 99 121 305 373 6 7 25 31 60 7 0 123 150 248 304 14 17 20 24 106 129 321 392 9 11 26 32 14 0 119 146 232 284 11 13 21 25 113 138 327 400 7 8 28 34 70 7 0 126 154 282 344 14 17 19 24 118 145 342 418 10 12 29 35 14 0 122 149 263 322 10 13 20 ...

Страница 34: ...19 21 26 84 102 280 342 7 8 22 26 18 0 117 142 173 211 11 14 22 27 89 108 286 349 5 6 23 28 50 9 0 123 150 218 266 15 18 20 25 96 117 302 368 8 9 24 29 18 0 120 146 204 249 11 14 21 26 102 124 308 376 6 7 25 31 60 9 0 126 153 251 307 14 17 20 24 109 132 324 395 9 11 26 32 18 0 122 149 235 287 11 13 21 25 116 141 330 403 7 8 28 34 70 9 0 129 157 285 347 14 17 19 24 121 148 345 421 10 12 29 35 18 0 ...

Страница 35: ...12 1880 1852 1826 1800 1771 1737 1695 1644 4 1600 FL 1774 1738 1703 1669 1635 1600 1562 1521 1475 1423 3 1400 1565 1526 1493 1463 1432 1400 1363 1319 1265 1199 2 1300 PL Fan only 1506 1469 1430 1390 1347 1300 1249 1193 1130 1061 1 1100 1425 1326 1250 1191 1143 1100 1056 1006 942 860 LM060 5 2200 2476 2403 2338 2283 2237 2200 2172 2153 2142 2141 2149 2166 4 2000 FL 2170 2135 2100 2066 2033 2000 196...

Страница 36: ...00 A 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 Med 1300 Normal A 1300 1300 1300 1300 1300 1300 1300 1300 1300 1300 Low 1100 A 1100 1100 1100 1100 1100 1100 1100 1100 1100 1100 LM048 Full Load Hi 1800 A 1800 1800 1800 1800 1800 1800 1800 1800 1800 1800 Med 1600 Normal A 1600 1600 1600 1600 1600 1600 1600 1600 1600 1600 Low 1400 A 1400 1400 1400 1400 1400 1400 1400 1400 1400 1400 LM060 Part ...

Страница 37: ...ressure drop in PSIG Series GPM Water PD 77 EWT with Water LM024 3 0 7 4 1 2 5 1 7 6 2 4 7 3 2 8 4 0 LM036 4 5 1 3 6 2 2 7 5 3 2 9 4 5 10 5 5 9 12 7 5 LM048 6 1 1 8 1 8 10 2 7 12 3 7 14 4 9 16 6 2 LM060 7 5 1 1 10 1 9 12 5 2 8 15 3 9 17 5 5 2 20 6 6 LM070 9 0 9 12 1 4 15 2 1 18 3 0 21 3 9 24 5 0 ...

Страница 38: ...38 Wiring Diagrams LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice WIRING DIAGRAMS Figure 25 ...

Страница 39: ...Wiring Diagrams 39 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 Figure 26 ...

Страница 40: ...40 Wiring Diagrams LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice Figure 27 ...

Страница 41: ...Wiring Diagrams 41 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 Figure 28 ...

Страница 42: ...42 Wiring Diagrams LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice Figure 29 ...

Страница 43: ...Wiring Diagrams 43 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 Figure 30 ...

Страница 44: ...44 Wiring Diagrams LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice ...

Страница 45: ...Wiring Diagrams 45 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 ...

Страница 46: ...46 Wiring Diagrams LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice ...

Страница 47: ...Wiring Diagrams 47 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 Figure 31 ...

Страница 48: ...48 Wiring Diagrams LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice Figure 32 ...

Страница 49: ...Wiring Diagrams 49 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 Figure 33 ...

Страница 50: ...50 Wiring Diagrams LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice Figure 34 ...

Страница 51: ...WIRING HARNESS DRAWINGS 51 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 WIRING HARNESS DRAWINGS Figure 35 Three Phase ...

Страница 52: ...52 WIRING HARNESS DRAWINGS LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice Figure 36 Three Phase ...

Страница 53: ...WIRING HARNESS DRAWINGS 53 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 Figure 37 Single Phase ...

Страница 54: ...54 WIRING HARNESS DRAWINGS LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice Figure 38 Single Phase ...

Страница 55: ...Dimensional Drawings 55 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 DIMENSIONAL DRAWINGS Figure 39 ...

Страница 56: ...56 Dimensional Drawings LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice Horizontal Straight Through Figure 40 ...

Страница 57: ...Dimensional Drawings 57 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 Horizontal Hanging bracket location Figure 41 ...

Страница 58: ...58 Dimensional Drawings LM Series Heat Pump LM Series Heat Pump 8 733 905 315 2013 9 Subject to change without prior notice Vertical Figure 42 ...

Страница 59: ...Notes 59 LM Series Heat Pump 8 733 905 315 2013 9 Revised 09 13 NOTES ...

Страница 60: ...601 N W 65th Court Ft Lauderdale FL 33309 Phone 866 642 3198 Fax 954 776 5529 www boschtaxcredit com www bosch climate us Revised 09 13 ...

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