background image

16

Connections for condenser flow switch, chilled fluid pump

interlock, condenser pump interlock, remote alarm output, con-

denser output, and dual chiller thermistor accessory are made at

these locations. See Fig. 17 for specific location of connec-

tions.

The unit has the capability to control field-supplied devices.

They are: alarm signal, condenser pump or condenser fan out-

put, and chilled water pump output. The unit provide 24-v

power with a minimum 5 va rating per output allowed.
UNBALANCED 3-PHASE SUPPLY VOLTAGE — 

Never

operate a compressor where a phase imbalance in the supply

voltage is greater than 2%

. Use the following formula to deter-

mine the percent voltage imbalance:
% Voltage Imbalance =

100 x

max voltage deviation from average voltage

average voltage

EXAMPLE:  Supply voltage is 240-3-60.

AB = 243 v
BC = 236 v
AC = 238 v

Average Voltage = 243 + 236 + 238

3

= 239 v

Determine maximum deviation from average voltage:
(AB) 243 – 239 = 4 v
(BC) 239 – 236 = 3 v
(AC) 239 – 238 = 1 v
Maximum deviation is 4 v. 

Determine percent voltage imbalance:
% Voltage Imbalance = 100  x  

   

4

             239

= 1.7%

This amount of phase imbalance is satisfactory as it is below

the maximum allowable 2%. 

Table 8 — Electrical Data — 30MPA,MPW Units

LEGEND

*Supply Range — Units are suita

b

le for use on electrical systems

where voltage supplied to the unit terminals is not 

b

elow or a

b

ove

the listed range limits.

NOTES:

1. All units have one field power terminal 

b

lock.

2. Maximum incoming wire size is as follows:

For units with terminal 

b

lock:

    350 kcmil for unit sizes 030-045; 20

8

/230-3-60 voltages.

    2/0 for all other unit sizes; all voltages.
For units with optional non-fused disconnect:
    350 kcmil for unit sizes:
      030-045; 20

8

/230-3-60 voltages.

      045; 3

8

0-3-60 voltage.

    3/0 for unit sizes:
      015,020; 20

8

/230-3-60 voltages.

      020-040; 3

8

0-3-60 voltage.

      030-045; 460-3-60 and 575-3-60 voltages.
    2 AWG for unit sizes:
      015; 3

8

0-3-60 voltage.

      015-020; 460-3-60 and 575-3-60 voltages.

3. Additional control circuit power is not re

q

uired. 

4. Any field modification of factory wiring must 

b

e in compliance

with all applica

b

le codes. Field-installed power wires must 

b

e

rated 75 C minimum. 

5. Use copper conductors only. 
6. Control circuit power supply is 24-v single phase. Control

power is supplied 

b

y the factory-installed control transformer. 

IMPORTANT: If the supply voltage phase imbalance

is more than 2%, contact your local utility company

immediately.

UNIT SIZE

30MPA,MPW

VOLTS

NAMEPLATE

(3 ph, 60 Hz)

VOLTAGE*

COMPRESSOR

UNIT

Quantity

LRA
(ea.)

MCA

ICF

MOCP

Rec

Fuse

Min

Max

015

20

8

/230

1

8

7

253

2

195

66.4

224.5

90

8

0

3

8

0

342

41

8

123

37.6

139.7

50

45

460

414

50

8

95

33.1

109.7

45

40

575

51

8

632

8

0

27.5

  92.2

35

35

020

20

8

/230

1

8

7

253

2

239

8

0.6

274.

8

110

90

3

8

0

342

41

8

145

53.4

16

8

.7

70

60

460

414

50

8

125

40.3

142.9

50

45

575

51

8

632

8

0

32.2

  94.3

45

40

030

20

8

/230

1

8

7

253

2

340

125.6

395.

8

175

150

3

8

0

342

41

8

196

76.5

230.0

110

90

460

414

50

8

179

60.5

205.9

8

0

70

575

51

8

632

132

53.3

155.7

70

60

040

20

8

/230

1

8

7

253

3

300

166.7

402.6

200

200

3

8

0

342

41

8

139

8

7.4

192.

8

110

100

460

414

50

8

150

75.1

196.2

90

90

575

51

8

632

109

64.7

14

8

.

8

8

0

70

045

20

8

/230

1

8

7

253

3

340

1

8

1.4

451.6

225

200

3

8

0

342

41

8

196

110.5

264.0

125

125

460

414

50

8

179

8

7.4

232.

8

110

100

575

51

8

632

132

77.0

179.4

100

90

AWG

American Wire Gage

ICF

Maximum instantaneous current flow during starting.

kcmil

Thousand circular mils

LRA

Locked Rotor Amps

MCA

Minimum Circuit Amps (for wire sizing). Complies with 
NEC, Section 430-24.

MOCP

Maximum Overcurrent Protection

Rec 
Fuse

Recommended dual element fuse amps (150% of com-
pressor RLA). Size up to the next standard fuse size.

RLA

Rated Load Amps

Summary of Contents for AQUASNAP 30MPA

Page 1: ...ese installation instructions cover the 30MPA MPW units with ComfortLink controls The 30MPA units are condenserless units and the 30MPW units are all fluid cooled See Fig 1 and 2 SAFETY CONSIDERATIONS Installing starting up and servicing this equipment can be hazardous due to system pressures electrical components and equipment location roofs elevated structures etc Only trained qualified installe...

Page 2: ... oil to add to the system e Carefully unsweat remaining tubing stubs when nec essary Oil can ignite when exposed to torch flame Failure to follow these procedures may result in personal injury or death CAUTION DO NOT re use compressor oil or any oil that has been exposed to the atmosphere Dispose of oil per local codes and regulations DO NOT leave refrigerant system open to air any longer than the...

Page 3: ... TABLE FOR QTY OUT IN OPTIONAL SOUND ENCLOSURE FIELD CONNECTION 4 7 8 K O NON FUSED DISCONNECT OPTIONAL 1 4 FPT ACCESS P T ACCESS PORTS 1 4 SAE FLARE RELIEF CONNECTION POWER ENTRY WATER CONNECTIONS IN OUT 2 VICTAULIC 015 020 2 1 2 VICTAULIC 030 045 COOLER COOLER COOLER CONTROL PANEL END OPPOSITE CONTROL PANEL END MOUNTING HOLES 9 16 MOUNTING HOLES 9 16 IN OUT 040 045 TON ONLY FORK POCKETS SCROLLIN...

Page 4: ...t 2 Denotes center of gravity 3 Dimensions are shown in inches Dimensions in are in millimeters 4 Allow 36 in 914 mm clearance on control panel end opposite control panel end and above the unit All clearances must be in accordance with local codes 5 Denotes accessory or factory installed option a30 5033 ...

Page 5: ... 0 8 1 2 2 4 3 2 3 4 Maximum Refrigerant Pressure psig 505 505 565 565 565 Maximum Fluid Side Pressure psig 300 300 300 300 300 Water Connections in Inlet and Outlet Victaulic IPS 2 2 21 2 21 2 21 2 Drain NPT 1 2 1 2 1 2 1 2 1 2 CONDENSER 30MPW Only Weight lb empty 34 9 43 6 104 6 136 7 188 3 Net Fluid Volume gal 1 2 1 6 2 9 4 1 5 9 Maximum Refrigerant Pressure psig 505 505 565 565 565 Maximum Flu...

Page 6: ...kPa 3482 3482 3896 3896 3896 Maximum Fluid Side Pressure kPa 2068 2068 2068 2068 2068 Water Connections in Inlet and Outlet Victaulic IPS 11 2 11 2 2 2 2 CONDENSER REFRIGERANT CONNECTIONS 30MPA Only Liquid Line ODS in 1 2 1 2 5 8 5 8 5 8 Discharge Line ODS in 13 8 13 8 13 8 15 8 15 8 CHASSIS DIMENSIONS mm Length 1397 1397 1397 1397 1397 Width 813 813 813 813 813 Height 1588 1588 1588 1588 1588 MIN...

Page 7: ...t is installed verify that mounting bolt torque is 7 to 10 ft lb 9 to 14 Nm Step 5 Make Piping Connections See Fig 8 and 9 for typical piping applications 30MPA SYSTEM CONDENSER For detailed condenser piping installation instructions for 30MPA systems refer to separate instructions packaged with the remote condenser units Condenser refrigerant piping for 30MPA units should be sized to minimize the...

Page 8: ...ques Refer to Carrier System Design Manual or appropriate ASHRAE American Society of Heating Refrigerating and Air Conditioning Engineers handbook for details 5 See Tables 1A and 1B for minimum system fluid volume This system may require the addi tion of a holding tank to ensure adequate volume 6 A strainer with a minimum of 40 mesh must be installed within 10 ft 3 m of the evaporator fluid inlet ...

Page 9: ... of Heating Refrigerating and Air Condi tioning Engineers handbook for details on proper piping sizes and design 5 See Tables 1A and 1B for minimum system fluid volume This system may require the addition of a holding tank to ensure adequate volume 6 Hot gas lines should rise above refrigerant level in condenser circuit Double riser may be required check unit minimum capacity 7 Trap should be inst...

Page 10: ... use a brazed plate heat exchanger type condenser These heat exchangers are made of embossed plates of acid resistant stainless steel Every other plate is reversed so that the ridges of the herringbone pattern intersect one another on adjacent plates forming a lattice of contact points These plates are vacuum brazed together to form a compact and pressure resistant heat exchanger After brazing the...

Page 11: ... evaporator flow switch is standard on all units This is a thermal dispersion type switch that is installed in evaporator fluid outlet The switch is set to open when the evaporator fluid flow drops below the minimum set point For variable primary flow applications it may be necessary to adjust the flow switch set point to avoid nuisance trips Con tact Carrier service engineering for the method nee...

Page 12: ...0 110 120 130 140 150 160 170 180 190 200 210 220 230 240 GPM 120 100 80 e Drop kPa 40 60 Water Pressure 20 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Liters second 1 2 3 5 4 Fig 12 Condenser Water Pressure Drop ENGLISH SI LEGEND 1 30MP015 2 30MP020 3 30MP030 4 30MP040 5 30MP045 a30 5037 a30 5036 ...

Page 13: ... 160 170 180 190 200 Water Pressure Drop GPM 1 5 4 3 2 120 3 100 80 e Drop kPa 40 60 Water Pressure 20 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 Liters second 1 2 4 5 Fig 13 Evaporator Water Pressure Drop ENGLISH SI LEGEND 1 30MP015 2 30MP020 3 30MP030 4 30MP040 5 30MP045 a30 5035 a30 5034 ...

Page 14: ...the desired slightly alkaline water pH of 8 to 9 Avoid a pH greater than 10 since this will adversely affect pump seal components c A side stream filter is recommended see Fig 16 during the cleaning process Filter side flow rate should be enough to filter the entire water volume every 3 to 4 hours Change filters as often as neces sary during the cleaning process d Remove temporary bypass when clea...

Page 15: ...ined for the required gpm Step 7 Make Electrical Connections All field wiring must comply with local code requirements Electrical data for the complete unit and for the compressors is shown in Table 8 See Fig 17 for field wiring connections A field supplied branch circuit disconnect switch that can be locked in either OPEN or OFF position must be installed Control circuit power is 24 v on all unit...

Page 16: ...voltage 3 0 for unit sizes 015 020 208 230 3 60 voltages 020 040 380 3 60 voltage 030 045 460 3 60 and 575 3 60 voltages 2 AWG for unit sizes 015 380 3 60 voltage 015 020 460 3 60 and 575 3 60 voltages 3 Additional control circuit power is not required 4 Any field modification of factory wiring must be in compliance with all applicable codes Field installed power wires must be rated 75 C minimum 5...

Page 17: ...n power and control power entrance locations 5 Terminal 24 of the LVT is for control of chilled water pump CWP starter Terminal 20 of the LVT is for control of condenser pump CNP starter or condenser fan relay CFR The maximum load allowed for the relays is 5 VA sealed 10 VA inrush at 24 VAC Field power supply is not required 6 Terminal 25 of LVT is for an alarm relay The maximum load allowed for a...

Page 18: ......

Page 19: ......

Page 20: ... discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53300077 01 Printed in U S A Form 30MP 5SI Pg 20 612 11 11 Replaces 30MP 1SI Copyright 2011 Carrier Corporation ...

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