Carrier AQUAZONE 50RTP03-20 Installation And Service Instructions Manual Download

Page: 1 / 60

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Catalog No. 04-53500070-01

Printed in U.S.A.

Form 50RTP-1SI

Pg 1

7-10

Replaces: New

Installation, Start-Up, and

Service Instructions

CONTENTS

Page

SAFETY CONSIDERATIONS

. . . . . . . . . . . . . . . . . . .1,2

GENERAL

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

INSTALLATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34

Step 1 — Check Jobsite

. . . . . . . . . . . . . . . . . . . . . . . . 2

Step 2 — Check Unit

. . . . . . . . . . . . . . . . . . . . . . . . . . . 2

• STORAGE

• PROTECTION

• INSPECT UNIT

Step 3 — Locate Unit

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Step 4 — Mount the Unit

. . . . . . . . . . . . . . . . . . . . . . . . . 8

Step 5 — Install Condensate Drain

. . . . . . . . . . . . . . . 8

Step 6 — Make Piping Connections

. . . . . . . . . . . . . . 8

• WATER LOOP APPLICATIONS

• GROUND-WATER APPLICATIONS

• GROUND-LOOP APPLICATIONS

Step 7 — Connect Electrical Wiring

. . . . . . . . . . . . . . 9

• SUPPLY VOLTAGE

• 208-VOLT OPERATION

• BLOWER SELECTION

Step 8 — Connect Low Voltage Wiring

. . . . . . . . . . 34

• THERMOSTAT CONNECTIONS

• WATER FREEZE PROTECTION

• AIR COIL FREEZE PROTECTION

• ACCESSORY CONNECTIONS

• WATER SOLENOID VALVES

PRE-START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

System Checkout

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

FIELD SELECTABLE INPUTS

. . . . . . . . . . . . . . . .35,36

Complete C Control Jumper Settings

. . . . . . . . . . . 35

Complete C Control DIP Switches

. . . . . . . . . . . . . . 35

Deluxe D Control Jumper Settings

. . . . . . . . . . . . . 35

Deluxe D Control DIP Switches

. . . . . . . . . . . . . . . . 35

Deluxe D Control Accessory Relay
Configurations

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Water Valve (Slow Opening)

. . . . . . . . . . . . . . . . . . . 36

Outside-Air Damper (OAD)

. . . . . . . . . . . . . . . . . . . . 36

START-UP

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36-40

Operating Limits

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Scroll Compressor Rotation

. . . . . . . . . . . . . . . . . . . . . 37

Unit Start-Up Cooling Mode

. . . . . . . . . . . . . . . . . . . . . 37

Unit Start-Up Heating Mode

. . . . . . . . . . . . . . . . . . . . . 37

Unit Start-Up with WHSP Open Controls

. . . . . . . . 38

Flow Regulation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

System Claening and Flushing

. . . . . . . . . . . . . . . . . . 39

Antifreeze

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Cooling Tower/Boiler Systems

. . . . . . . . . . . . . . . . . . 40

Ground Coupled, Closed Loop and Plateframe

Heat Exchanger Well Systems

. . . . . . . . . . . . . . . . 40

OPERATION

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40-43

Power Up Mode

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

Page

Units with Aquazone™ Complete C Control

. . . . . 40

Units with Aquazone Deluxe D Control

. . . . . . . . . . 40

Units with WSHP Open Protocol

. . . . . . . . . . . . . . . . 40

SYSTEM TEST

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43-45

Test Mode

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Retry Mode

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

Aquazone Deluxe D Control LED Indicators

. . . . . 45

WSHP Open Test Mode

. . . . . . . . . . . . . . . . . . . . . . . . . . 45

SERVICE

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45,46

Filters

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Water Coil

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Condensate Drain Pans

. . . . . . . . . . . . . . . . . . . . . . . . . 45

Refrigerant System

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Condensate Drain Cleaning

. . . . . . . . . . . . . . . . . . . . . 45

Air Coil Cleaning

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Condenser Cleaning

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Checking System Charge

. . . . . . . . . . . . . . . . . . . . . . . 46

Refrigerant Charging

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

Air Coil Fan Motor Removal

. . . . . . . . . . . . . . . . . . . . . 46

Replacing the WSHP Open Controller’s
Battery

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

TROUBLESHOOTING

. . . . . . . . . . . . . . . . . . . . . . . . 47-49

Thermistor

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

Control Sensors

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

APPENDIX A — WSHP OPEN SCREEN
CONFIGURATION

. . . . . . . . . . . . . . . . . . . . . . . . . . 50-55

START-UP CHECKLIST

. . . . . . . . . . . . . . . . . . CL-1, CL-2

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can

be hazardous due to system pressure and electrical compo-

nents. Only trained and qualified service personnel should

install, repair, or service air-conditioning equipment.

Untrained personnel can perform basic maintenance func-

tions of cleaning coils and filters and replacing filters. All other

operations should be performed by trained service personnel.

When working on air-conditioning equipment, observe precau-

tions in the literature, tags and labels attached to the unit, and

other safety precautions that may apply.

Improper installation, adjustment, alteration, service, main-

tenance, or use can cause explosion, fire, electrical shock or

other conditions which may cause personal injury or property

damage. Consult a qualified installer, service agency, or your

distributor or branch for information or assistance. The

qualified installer or agency must use factory-authorized kits or

accessories when modifying this product. Refer to the individ-

ual instructions packaged with the kits or accessories when

installing.

IMPORTANT: Read the entire instruction manual before

starting installation.

AQUAZONE™

50RTP03-20

Rooftop Water Source Heat Pumps

with PURON

Refrigerant (R-410A)

Summary of Contents for AQUAZONE 50RTP03-20

Page 1: ...40 Units with WSHP Open Protocol 40 SYSTEM TEST 43 45 Test Mode 43 Retry Mode 43 Aquazone Deluxe D Control LED Indicators 45 WSHP Open Test Mode 45 SERVICE 45 46 Filters 45 Water Coil 45 Condensate Drain Pans 45 Refrigerant System 45 Condensate Drain Cleaning 45 Air Coil Cleaning 45 Condenser Cleaning 45 Checking System Charge 46 Refrigerant Charging 46 Air Coil Fan Motor Removal 46 Replacing the ...

Page 2: ... allow piping conduit etc to block filter access 8 Provide sufficient access to allow maintenance and servicing of the fan and fan motor compressor and coils 9 Provide an unobstructed path to the unit Space should be sufficient to allow removal of unit if necessary 10 Provide ready access to water valves and fittings and screwdriver access to unit side panels discharge collar and all electrical co...

Page 3: ...ce for service personnel to perform maintenance Table 1 Physical Data Aquazone 50RTP03 20 Units IPT Iron National Pipe Thread CAUTION DO NOT store or install units in corrosive environments or in locations subject to temperature or humidity extremes e g attics garages rooftops etc Corrosive conditions and high temperature or humidity can significantly reduce performance reliability and service lif...

Page 4: ...nd specification of each product at the time of order may be changed with out notice 3 Assembly tolerances 1 8 inch A50 8267 eps Fig 1 50RTP03 06 Unit Dimensions 50RTP UNITS DIMENSIONS in Outside Air Opening Size Water In Out FPT Condensate Drain 03 04 12 57 x 30 00 3 4 1 05 12 57 x 30 00 1 1 06 12 57 x 30 00 1 1 4 1 ...

Page 5: ... design and specification of each product at the time of order may be changed with out notice 3 Assembly tolerances 1 8 inch A50 8268 eps Fig 2 50RTP08 12 Unit Dimensions 50RTP UNITS DIMENSIONS in Outside Air Opening Size Water In Out FPT Condensate Drain 08 18 95 x 36 00 1 1 4 1 10 12 18 95 x 36 00 1 1 2 1 ...

Page 6: ...inuously to improve its products As a result the design and specification of each product at the time of order may be changed with out notice 3 Assembly tolerances 1 8 inch A50 8269 eps 50RTP UNITS DIMENSIONS in Outside Air Opening Size Water In Out FPT Condensate Drain 14 20 18 95 x 74 00 2 1 ...

Page 7: ... L M N P Q R 50RTPACURBAAAA 35 250 72 25 18 00 1 50 12 50 22 00 16 00 39 250 33 250 27 00 21 00 39 250 33 250 39 250 76 25 50RTPACURBBAAA 41 250 82 25 21 00 1 50 12 50 25 00 19 00 45 250 39 250 27 00 21 00 45 250 39 250 45 250 86 25 50RTPACURBCAAA 78 875 82 25 21 00 5 00 9 00 25 00 19 00 82 875 76 875 27 00 21 00 82 875 76 875 82 875 86 25 ...

Page 8: ...er the following for system piping Piping systems utilizing water temperatures below 50 F require 1 2 in closed cell insulation on all piping surfaces to eliminate condensation All plastic to metal threaded fittings should be avoided due to the potential to leak Use a flange fitted substitute Teflon tape thread sealant is recommended to minimize internal fouling of the heat exchanger Use backup wr...

Page 9: ...P AND RECIRCULATING WELL Scaling Potential Primary Measurement Above the given limits scaling is likely to occur Scaling indexes should be calculated using the limits below pH Calcium Hardness Method All N A pH 7 5 and Ca Hardness 100 ppm Index Limits for Probable Scaling Situations Operation outside these limits is not recommended Scaling indexes should be calculated at 150 F for direct use and H...

Page 10: ...5 04 5 208 3 60 197 254 A B C 1 13 7 83 1 1 4 0 1 0 17 7 21 1 35 D E 1 13 7 83 1 1 5 0 1 5 18 7 22 1 35 6 460 3 60 414 506 A B C 1 6 2 41 0 1 2 0 1 0 8 2 9 8 15 D E 1 6 2 41 0 1 2 4 1 5 8 6 10 1 15 1 575 3 60 518 633 A B C 1 4 8 33 0 1 1 4 1 0 6 2 7 4 15 D E 1 4 8 33 0 1 1 9 1 5 6 7 7 9 15 05 5 208 3 60 197 254 A B C 1 15 6 110 0 1 4 0 1 0 19 6 23 5 40 D E 1 15 6 110 0 1 5 0 1 5 20 6 24 5 40 6 460...

Page 11: ...tor B B B A A A A A A A C C C C C C rpm 552 615 665 715 765 820 875 925 965 1010 1055 1100 1140 1180 1220 1260 Turns Open 4 5 3 5 3 0 4 5 4 0 3 5 2 5 2 0 1 5 1 0 3 0 2 5 2 0 2 0 1 5 1 0 1000 bhp 0 16 0 17 0 19 0 21 0 23 0 25 0 28 0 30 0 33 0 36 0 40 0 43 0 46 0 49 0 52 0 55 Sheave Motor B B A A A A A A A A C C C C C C rpm 615 655 695 740 790 845 900 940 985 1030 1070 1115 1150 1190 1230 1265 Turns...

Page 12: ...1155 1190 1220 1255 1290 1320 1355 1390 Turns Open 4 5 4 0 3 5 3 0 2 5 2 0 1 5 0 5 0 0 3 5 3 0 2 5 2 0 1 5 1 0 1 0 1500 bhp 0 49 0 52 0 54 0 57 0 62 0 68 0 73 0 76 0 79 0 82 0 85 0 89 0 92 0 96 1 00 1 05 Sheave Motor A A A A A A A A C C C C C C E E rpm 910 945 975 1010 1045 1080 1115 1150 1180 1215 1250 1280 1310 1345 1375 1405 Turns Open 3 5 3 5 3 0 2 5 2 0 1 5 1 0 0 0 3 5 3 0 2 5 2 0 2 0 1 5 1 0...

Page 13: ... 5 3 0 2 5 2 0 2 0 1 5 1900 bhp 0 29 0 32 0 37 0 41 0 46 0 50 0 55 0 59 0 62 0 66 0 70 0 73 0 77 0 81 0 85 0 88 Sheave Motor B B B A A A A A A A A C C C C C rpm 568 620 665 710 755 790 830 865 895 925 955 985 1015 1035 1060 1080 Turns Open 4 5 3 5 3 0 4 5 3 5 3 0 2 5 2 0 1 5 1 0 0 5 2 5 2 0 2 0 1 5 1 0 2000 bhp 0 33 0 36 0 42 0 47 0 52 0 57 0 61 0 66 0 69 0 73 0 77 0 81 0 85 0 89 0 92 0 96 Sheave ...

Page 14: ...5 3 0 2 5 2300 bhp 0 49 0 54 0 58 0 62 0 67 0 72 0 78 0 82 0 87 0 91 0 97 1 02 1 08 1 13 1 19 1 23 Sheave Motor B B B A A A A A A A C C C C C C rpm 640 685 725 765 800 840 880 910 945 975 1010 1035 1065 1090 1120 1145 Turns Open 3 0 2 0 1 0 4 5 4 0 3 0 2 5 2 0 1 0 0 5 4 5 4 0 3 5 3 0 2 5 2 5 2400 bhp 0 54 0 58 0 62 0 68 0 74 0 79 0 85 0 90 0 94 0 99 1 04 1 10 1 15 1 21 1 27 1 31 Sheave Motor B B A...

Page 15: ... 0 3 0 5 5 5 0 4 5 3 5 3 0 2 5 2 0 1 5 1 0 5 5 5 0 4 5 4 5 4 0 3 5 3 5 3 0 3 0 2 5 3000 bhp 0 68 0 73 0 78 0 83 0 89 0 97 1 05 1 13 1 18 1 24 1 30 1 35 1 42 1 51 1 60 1 68 1 76 1 80 1 85 1 88 1 92 Sheave Motor B B A A A A A A A A C C C C C C C C C C C rpm 583 616 648 680 712 740 768 796 820 844 872 896 916 940 964 984 1008 1028 1048 1064 1084 Turns Open 3 5 2 5 5 5 5 0 4 0 3 5 3 0 2 5 1 5 1 5 6 0 ...

Page 16: ... 2 12 2 20 2 28 2 36 2 44 2 52 2 60 2 67 2 77 2 84 Sheave Motor A A A A A A C C C E E E E E E E E E E E E rpm 712 740 764 792 816 840 864 888 908 932 952 976 1000 1020 1040 1060 1080 1100 1116 1136 1152 Turns Open 4 0 3 5 3 0 2 5 2 0 1 5 6 0 5 5 5 0 4 5 4 5 4 0 3 5 3 0 3 0 2 5 2 5 2 0 2 0 1 5 1 0 3900 bhp 1 41 1 48 1 54 1 61 1 70 1 78 1 84 1 93 2 01 2 08 2 17 2 26 2 33 2 41 2 49 2 57 2 65 2 74 2 8...

Page 17: ...40 2 47 Sheave Motor B B A A A A A A A A A A C C C C C C C C C rpm 660 692 720 744 772 800 824 848 872 896 920 940 964 988 1008 1028 1048 1068 1088 1108 1124 Turns Open 3 5 2 5 6 0 5 5 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 5 0 4 5 4 0 3 5 3 5 3 0 2 5 2 5 2 0 3600 bhp 1 11 1 17 1 25 1 33 1 40 1 47 1 53 1 60 1 66 1 73 1 80 1 89 1 97 2 05 2 12 2 20 2 27 2 35 2 42 2 51 2 59 Sheave Motor B B A A A A A A A A ...

Page 18: ...892 916 936 956 976 996 1016 1036 1056 1076 1096 1112 1132 1152 1168 1188 Turns Open 4 0 3 5 3 0 2 5 2 0 1 5 1 0 5 0 4 5 4 0 4 0 3 5 3 0 3 0 2 5 2 0 2 0 1 5 1 5 1 0 4600 bhp 2 12 2 20 2 30 2 38 2 47 2 56 2 64 2 73 2 83 2 92 3 00 3 10 3 20 3 30 3 40 3 49 3 60 3 68 3 79 3 88 Sheave Motor A A A A A A A C C C E E E E E E E E E E rpm 820 840 864 884 908 928 948 968 992 1012 1028 1048 1068 1088 1108 112...

Page 19: ... 5 4 0 3 0 2 5 2 0 1 0 6 0 6 0 5 5 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 4600 bhp 1 77 1 88 1 96 2 05 2 13 2 22 2 33 2 42 2 53 2 62 2 75 2 85 3 00 3 11 3 22 3 32 3 44 3 54 3 64 3 78 3 92 Sheave Motor B A A A A A A A A C C C E E E E E E E E E rpm 780 808 832 856 880 904 928 948 972 992 1016 1036 1060 1084 1104 1124 1148 1168 1188 1212 1232 Turns Open 1 5 5 5 4 5 4 0 3 5 2 5 2 0 1 5 1 0 6 0 5 5 5 0 4 ...

Page 20: ...2 83 Sheave Motor B B B A A A A A A A C C C C C C C C rpm 583 616 652 688 716 744 768 796 820 848 872 896 916 940 960 980 1000 1020 Turns Open 5 0 4 0 2 5 5 5 4 5 4 0 3 5 2 5 2 0 1 0 5 5 5 0 4 5 4 0 3 5 3 0 3 0 2 5 5200 bhp 1 02 1 11 1 22 1 34 1 47 1 58 1 69 1 78 1 90 2 00 2 13 2 23 2 34 2 45 2 59 2 70 2 84 3 00 3 03 Sheave Motor B B B B A A A A A A A C C C C C C E E rpm 558 596 628 660 696 724 75...

Page 21: ...6 1036 1056 1076 Turns Open 5 5 4 5 3 5 2 5 5 5 4 5 4 0 3 0 2 5 1 5 1 0 5 5 5 0 4 5 4 0 3 5 3 0 2 5 2 0 1 5 1 0 6600 bhp 1 55 1 68 1 83 1 96 2 12 2 24 2 36 2 47 2 61 2 74 3 00 3 01 3 17 3 34 3 48 3 66 3 82 3 94 4 06 4 16 4 28 Sheave Motor B B B A A A A A A A D E E E E E E E E E E rpm 583 616 648 676 708 736 764 788 816 840 864 888 912 936 956 980 1004 1024 1044 1060 1080 Turns Open 5 0 4 0 3 0 6 0...

Page 22: ...4 62 4 76 5 00 5 07 Sheave Motor B B B B A A A A A A A A A C C C C C C E E rpm 688 716 744 768 796 820 844 868 892 916 940 960 984 1008 1028 1044 1064 1084 1104 1124 1140 Turns Open 4 5 3 5 2 5 2 0 5 5 5 0 4 5 3 5 3 0 2 5 1 5 1 0 0 5 6 0 5 0 5 0 4 5 4 0 3 5 3 0 3 0 7 200 bhp 2 34 2 5 2 66 2 79 2 94 3 07 3 17 3 30 3 43 3 60 3 77 3 92 4 09 4 24 4 39 4 55 4 70 4 85 5 03 5 17 5 36 Sheave Motor B B B A...

Page 23: ...1 5 1 0 0 5 0 0 5 5 5 0 4 5 4 0 3 5 3 0 3 0 2 5 2 0 1 5 9 000 bhp 4 30 4 50 4 66 4 86 5 04 5 21 5 39 5 56 5 76 5 96 6 16 6 36 6 56 6 71 6 89 7 07 7 21 7 39 Sheave Motor A A A A D D D D E E E E E E E E E E rpm 848 872 892 916 936 956 976 996 1016 1036 1056 1076 1096 1112 1132 1152 1168 1188 Turns Open 4 0 3 5 3 0 2 5 2 0 1 0 0 5 0 0 5 5 5 0 4 5 4 0 4 0 3 5 3 0 2 5 2 0 2 0 9 200 bhp 4 62 4 78 5 00 5...

Page 24: ... operation disconnect RED lead at L1 and attach ORG lead to L1 Close open end of RED lead 4 FPI thermistor provides freeze protection for WATER When using ANTIFREEZE solutions cut JW3 jumper 5 Typical heat pump thermostat wiring shown Refer to thermostat installation instructions for wiring to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltag...

Page 25: ...25 Complete C 1 Complete C 2 Fig 7 50RTP08 20 Units Typical Control Wiring with Complete C Controls and Optional Economizer See legend and notes on page 24 a50 8554 ...

Page 26: ...26 Complete C Complete C Complete C 2 Complete C 1 Complete C 1 Complete C 2 Fig 8 Typical Control Wiring with Complete C and LON Controller 50RTP03 06 UNITS 50RTP08 20 UNITS a50 8555 ...

Page 27: ... and attach ORG lead to L1 Close open end of RED lead 4 FPI thermistor provides freeze protection for WATER When using ANTIFREEZE solutions cut JW3 jumper 5 Typical heat pump thermostat wiring shown Refer to thermostat installation instructions for wiring to the unit Thermostat wiring must be Class 1 and voltage rating equal to or greater than unit supply voltage 6 Factory cut JW1 jumper and dry c...

Page 28: ...28 Deluxe D Deluxe D Deluxe D Deluxe D Fig 10 50RTP08 20 Units Typical Control Wiring with Deluxe D Controls and Optional Economizer See legend and notes on page 27 a50 8557 ...

Page 29: ...29 Deluxe D Deluxe D Deluxe D 1 Deluxe D 2 Fig 11 Typical Control Wiring with Deluxe D and LON Controller SIZES 03 06 SIZES 08 20 a50 8558 ...

Page 30: ...ig 12 Premierlink Controller Applications Wiring with Complete C Control LEGEND NOTE Reversing valve is on in Cooling mode CR Control Relay LWT Leaving Water Temperature Sensor SAT Supply Air Temperature Sensor SPT Space Temperature Sensor Fig 13 Premierlink Controller Applications Wiring with Deluxe D Control LEGEND NOTE Reversing valve is on in Cooling mode LWT Leaving Water Temperature Sensor S...

Page 31: ... Protocol Controls A50 8355 LEGEND BM Blower Motor BR Blower Relay CO Condensate Overflow FSD Fire Smoke Detector LWT Leaving Water Temperature N C Normally Closed OAD Outside Air Damper OCC Occupancy Input Contact RH Relative Humidity SAT Supply Air Temperature SPT Space Temperature ...

Page 32: ...rotocol Controls A50 8354 LEGEND BM Blower Motor BR Blower Relay CO Condensate Overflow FSD Fire Smoke Detector LWT Leaving Water Temperature N C Normally Closed OAD Outside Air Damper OCC Occupancy Input Contact RH Relative Humidity SAT Supply Air Temperature SPT Space Temperature ...

Page 33: ...door Air Quality 33ZCSENCO2 AI 4 20mA J4 2 and 3 Analog Input 2 Condensate Switch N A BI Dry Contacts J1 2 Binary Input 3 Stage 1 Compressor Status N A BI Dry Contacts J1 10 Binary Input 5 Leaving Condenser Water Temperature 10K Type II AI 10K Thermistor J2 1 and 2 Analog Input 6 Supply Air Temperature 33ZCSENSAT AI 10K Thermistor J2 3 and 4 Analog Input 7 Outputs Modulating Valve Auxiliary Heat W...

Page 34: ... be required to prevent water hammer When using a slow closing valve special wiring conditions need to be considered The valve takes approximately 60 sec onds to open very little water will flow before 45 seconds and it activates the compressor only after the valve is completely opened by closing its end switch When wired as shown the valve will have the following operating characteristics 1 Remai...

Page 35: ...n and can be configured in the field Complete C Control Jumper Settings See Fig 6 and 7 WATER COIL FREEZE PROTECTION FP1 LIMIT SETTING Select jumper 3 JW3 FP1 Low Temp to choose FP1 limit of 10 F or 30 F To select 30 F as the limit DO NOT clip the jumper To select 10 F as the limit clip the jumper AIR COIL FREEZE PROTECTION FP2 LIMIT SET TING Select jumper 2 JW2 FP2 Low Temp to choose FP2 limit of...

Page 36: ...selection of Accessory 1 relay options See Table 13 for DIP switch combinations Switches 4 to 6 These DIP switches provide selection of Accessory 2 relay options See Table 14 for DIP switch combinations Auto Dehumidification Mode or High Fan Mode Switch 7 provides selection of auto dehumidification fan mode or high fan mode In auto dehumidification fan mode the fan speed re lay will remain off dur...

Page 37: ...ing After a few minutes of reverse operation the scroll com pressor internal overload protection will open thus activating the unit lockout This requires a manual reset To reset turn the thermostat on and then off NOTE There is a 5 minute time delay before the compressor will start Unit Start Up Cooling Mode 1 Adjust the unit thermostat to the warmest position Slowly reduce the thermostat position...

Page 38: ...he Home screen then press Clockset b Scroll to hour minute and second using the arrow keys Use the number keypad to set actual time c Scroll to day month and year using arrow keys Use number keypad to set date 5 To set Daylight Savings Time DST a Push the DST softkey The display will indicate 02 00 060 which is equal to 2 00AM b To program the beginning and end dates scroll down to the beginning m...

Page 39: ...es Reconnect the hoses to the proper supply and return the connections to each of the rooftop units Refill the system and bleed off all air 9 Add antifreeze to the system in climates where ambient temperature falls below freezing using the proportion of antifreeze shown in Table 17 The volume of antifreeze required will vary based on outdoor design temperature 10 Test the system pH with litmus pap...

Page 40: ...ays and related functions will operate per their associated DIP switch 2 setting on S1 HEATING STAGE 2 In Heating Stage 2 mode the Fan Enable and Compressor relays remain on The Fan Speed relay is turned on immediately and turned off immediately once the demand is removed The control reverts to Heating Stage 1 mode If there is a master slave or dual compressor application all compressor relays and...

Page 41: ... for Fan On and Fan Off The Fan On delay defines the delay time 0 to 30 seconds default 10 before the fan begins to operate after heating or cooling is started while the Fan Off delay defines the delay time 0 to 180 seconds default 45 the fan will continue to op erate after heating or cooling is stopped The fan will continue to run as long as the compressors heating stages or the dehu midification...

Page 42: ...der to maintain the desired heating set point Should the compres sor capacity be insufficient or a compressor failure occurs the auxiliary heat will be used Unless the compressor fails the auxiliary heat will only operate to supplement the heat provid ed by the compressor if the space temperature falls more than one degree below the desired heating set point the amount is configurable The heat wil...

Page 43: ...op temperature be suit able for heating at least 5 F above space temperature and heat is required The valve will be controlled in a similar manner except to satisfy the heating requirement Should the coil capacity be insufficient to satisfy the space load for more than 5 minutes then the compressor will be started to satisfy the load Should the SAT reach the maximum heating SAT limit the economize...

Page 44: ... power down to power up sequence 2 High Pressure Switch HP Open Instantly 3 Low Pressure Switch LP open for 30 continuous sec onds before or during a call bypassed for first 60 seconds 4 Freeze Protection Coax FP1 FP1 below Temp limit for 30 con tinuous seconds bypassed for first 60 seconds of operation 5 Freeze Protection Air Coil FP2 FP2 below Temp limit for 30 con tinuous seconds bypassed for f...

Page 45: ...ensate drain pans for algae growth twice a year If algae growth is apparent consult a water treatment specialist for proper chemical treat ment The application of an algaecide every three months will typically eliminate algae problems in most locations Refrigerant System Verify air and water flow rates are at proper levels before servicing To maintain sealed circuit ry integrity do not install ser...

Page 46: ...temperature The dif ference equals subcooling temperature 6 ADD refrigerant to raise the temperature or REMOVE refrigerant using standard practices to lower the temper ature allow a tolerance of 3 F as required Refrigerant Charging NOTE Do not vent or depressurize unit refrigerant to atmo sphere Remove and recover refrigerant following accepted practices Air Coil Fan Motor Removal Motor power wire...

Page 47: ... 10 000 ohm thermistors FP1 and FP2 that are used for freeze protection Be sure FP1 is located in the discharge fluid and FP2 is located in the air discharge See Fig 25 SUCTION COMPRESSOR DISCHARGE COAX EXPANSION VALVE FP2 FP1 LIQUID LINE WATER IN WATER OUT CONDENSATE OVERFLOW CO AIR COIL FREEZE PROTECTION WATER COIL PROTECTION THERMISTOR F F AIR COIL AIRFLOW AIRFLOW LEGEND Fig 25 FP1 and FP2 Ther...

Page 48: ...k Tables 4 12 X Air temperature out of range Too much cold vent air Bring entering air temperature within design parameters X Improper freeze protect set ting 30 F vs 10 F Normal airside applications will require 30 F only X X Bad thermistor Check temperature and impedance correlation Condensate Fault Code 6 X X Blocked drain Check for blockage and clean drain X X Improper trap Check trap dimensio...

Page 49: ...hermostat X X Unit undersized Recheck loads and sizing check sensible cooling load and heat pump capacity X X Scaling in water heat exchanger Perform Scaling check and clean if necessary X X Inlet water too hot or cold Check load loop sizing loop backfill ground moisture High Head Pressure X Reduced or no airflow in heating Check for dirty air filter and clean or replace Check fan motor operation ...

Page 50: ...m limit that was exceeded causing the alarm condition when SPT alarm above is in Alarm SPT Sensor Alarm Status Normal Alarm Displays the status of the Rnet SPT sensor ALARM is displayed should the sensor fail to communicate with the control module IAQ Alarm Status Normal Alarm Current IAQ ventilation condition Compressor Alarm Status Normal Alarm Current compressor condition SAT Alarm Status Norma...

Page 51: ...ion calculated by the DCV control Active Compressor Stages 0 1 2 Displays the actual number of compressor stages operating SAT F Displays SAT Reset Filter Alarm X No Yes Used to reset the filter alarm timer after the filter has been cleaned or replaced Overflow Contact Closed Open Displays the state of the condensate overflow switch contact Occupancy Contact Closed Open Displays the state of the e...

Page 52: ...oint used to define where the ventilation will reach its maximum limit during occupied periods Viewable only if Ventilation DMP Type DCV Used to determine DCV ending control point Configuration Schedule Weekly Schedule User Admin Password level access Start Time X 00 00 23 59 06 00 Defines the start time for an occupied period End Time X 00 00 24 00 18 00 Defines the ending time of an occupied per...

Page 53: ...OAT is greater than configured value and OAT is actively being broadcast Power Fail Restart Delay X 0 600 sec 60 sec Delay before equipment starts Occupancy Schedules X Disable Enable Enable Enables unit occupied Set Point Separation X 2 9 F 4 F Used to enforce minimum set point separation Configuration Service Test Admin Password level access only Test Mode X Disable Enable Disable Used to enable...

Page 54: ...sent Factory Dehumidifica tion Reheat Coil X None Installed None Set to Installed if factory installed dehumidification reheat coil is present Occupancy Input Logic X Occupied Open Occupied Closed Occupied CLOSED Used to determine external occu pancy switch contact occupied state Condensate Switch Alarm Delay X 5 600 seconds 10 sec Delay before equipment alarms on high condensate level Condensate ...

Page 55: ...pied High Alarm Limit X 0 9999 ppm 1100 ppm Defines the fixed occupied high space IAQ Ventilation alarm limit IAQ Ventilation Alarm Delay X 0 1 1 0 min per ppm 0 25 min Used to calculate the delay time before an alarm is generated after the alarm condition occurs Rnet Sensor SPT Alarm X Ignore Display Ignore Determines if the SPT alarm is displayed on the local Rnet sensor Rnet Sensor SAT Alarm X ...

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Page 58: ...ht to discontinue or change at any time specifications or designs without notice and without incurring obligations Catalog No 04 53500070 01 Printed in U S A Form 50RTP 1SI Pg 58 7 10 Replaces New Copyright 2010 Carrier Corporation ...

Page 59: ...VES OPEN Y N HAS CONDENSATE CONNECTION BEEN MADE AND IS A TRAP INSTALLED Y N IS AN AIR FILTER INSTALLED Y N II START UP IS FAN OPERATING WHEN COMPRESSOR OPERATES Y N VERIFY PROPER ROTATION OF SCROLL COMPRESSOR PER INSTRUCTIONS Y N UNIT VOLTAGE COOLING OPERATION PHASE AB VOLTS PHASE BC VOLTS PHASE CA VOLTS PHASE AB AMPS PHASE BC AMPS PHASE CA AMPS CONTROL VOLTAGE IS CONTROL VOLTAGE ABOVE 21 6 VOLTS...

Page 60: ...LE ANALYSIS HEAT OF EXTRACTION ABSORPTION OR HEAT OF REJECTION FLOW RATE GPM x TEMP DIFF DEG F x FLUID FACTOR Btu hr SUPERHEAT SUCTION TEMPERATURE SUCTION SATURATION TEMPERATURE DEG F SUBCOOLING DISCHARGE SATURATION TEMPERATURE LIQUID LINE TEMPERATURE DEG F Use 500 for water 485 for antifreeze SUCTION COMPRESSOR DISCHARGE COAX EXPANSION VALVE F F AIR COIL F PSI WATER OUT WATER IN F PSI F LIQUID LI...

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Carrier AQUAZONE 50RTP03-20, Installation And Service Instructions Manual

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