Table of Contents
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48/50PG20-28
Single Package Rooftop Units
with COMFORTLINK
TMControls
and PURON® (R-410A) Refrigerant
Controls, Start-Up, Operation, Service and
Troubleshooting
Instructions
CONTENTS
Page
SAFETY
CONSIDERATIONS
...............................
2
GENERAL
..................................................
2
BASIC CONTROL
USAGE ................................
2-5
ComfortLink
TM
Control
.....................................
2
Scrolling
Marquee
.........................................
3
Accessory
Navigator
TM
Display
............................
3
Operation
..................................................
3
System
Pilot
TM
.............................................
4
CCN Tables
and Display
...................................
4
Conventions
Used in this Manual
..........................
4
START-UP ...............................................
6-35
Unit Preparation
...........................................
6
Compressor
Mounting
.....................................
6
Refrigerant
Service
Ports ..................................
6
Crankcase
Heater(s)
.......................................
6
Corn pressor
Rotation
......................................
6
Internal
Wiring
.............................................
6
Subcooler
Heat Exchanger
(SHX) ..........................
6
Evaporator
Fan ............................................
6
Condenser
Fans and Motors ...............................
6
Retu m-Air
Filters
..........................................
6
Outdoor-Air
Inlet Screens ..................................
6
Gas Heat (48PC Only) ......................................
6
Orifice
Change
(48PC Only) ................................
7
..............................................
7
.................................................
7
Accessory
Installation
.....................................
7
QUICK START .............................
35,36
.......................................
35
--
Direct
Wired
(%55 or T-56) ..............................
35
Space Temperature
Sensor Control
-- CCN (T-58) .........
35
Space Temperature
Sensor Control
-- CCN Linkage
......
35
Space
Humidity
Control
-- Humidistat
....................
35
TM
................
35
Space
Humidity
Control
-- Relative
Sensor .....
35
......................................
35
..............................................
35
Service Test
..............................................
35
Control
Configuration
Checklist
..........................
36
Programming
Operating
Schedules
.......................
36
SERVICE
TEST .........................................
36-38
THIRD PARTY CONTROL
...............................
38,39
Thermostat
...............................................
38
................................................
38
Humidity
Sensor ..........................................
38
Remote Occupancy
.......................................
38
Fire Shutdown
............................................
38
Alarm
Output
.............................................
38
Outdoor
Enthalpy
.........................................
38
lAG Switch ................................................
39
IAQ Sensor
...............................................
39
OAQ Sensor
..............................................
39
CONTROLS
OPERATION
...............................
39-52
Display
Configuration
.....................................
39
Modes
....................................................
39
Unit Configuration
........................................
39
Occupancy
Determination
................................
40
Indoor
Fan ................................................
41
Cooling
...................................................
41
•
THERMOSTAT
(ONTROL
Page
SPA(E
SENSOR CONTROL
OUTDOOR
FANS
Gas Heating (48PC Units) ................................
42
THERMOSTAT
CONTROL
SPA(E
SENSOR ( ONTROL
SUPPLY AIR TEMPERATURE
(SAT) SENSOR
Electric
Heat
(50PG
Units) ................................
44
THERMOSTAT
CONTROL
SPA(E
SENSOR ( ONTROL
SUPPLY AIR TEMPERATURE
(SAT) SENSOR
Economizer
..............................................
44
THERMOSTAT
CONTROL
SPA(E
SENSOR ( ONTROL
ECONOMIZER
ACTUATOR
( OMMUNICATIONS
E%_OC(UPIED
FREE COOLING
POWER
EXHAUST
Optional
Humdi-MiZer
Dehumidification
System
.........
45
SETTING
UP THE SYSTEM
REHEAT MODE
SELECTION
PROCESS
REHEAT MODE
DIAGNOSTIC
HELP
•
AIR BAFFLES
indoor Air Quality ........................................
49
Temperature
Compensated
Start .........................
51
Carrier
Comfort
Network@
(CCN) Configuration
..........
5;
Alarm
Handling
...........................................
52
TROUBLESHOOTING
..................................
52-67
Complete
Unit Stoppage
.................................
52
Restart
Procedure
........................................
54
Module
Communication
..........................
54
Alarms
and Alerts
........................................
54
VIEWING
AND CLEARING
UNIT ALARMS
•
DIAGNOSTI(
ALARM
(ODES
AND POSSIBLE
(AUSES
Cooling
Troubleshooting
.................................
57
Troubleshooting
...........................
57
Economizer
Troubleshooting
.............................
57
Heating
Troubleshooting
.................................
60
Phase
Loss Protection
...................................
60
Thermistor
Troubleshooting
..............................
61
Transducer
Troubleshooting
.............................
64
Forcing
Inputs
and Outputs
..............................
64
MAJOR
SYSTEM
COMPONENTS
......................
67-84
General ...................................................
67
Main Base Board (MBB) ..................................
67
Control
Board (ECB)
........................
67
Gas Control
(IGC) Board ......................
67
Low Voltage
Terminal
Strip (TB2) .........................
67
Scrolling
Marquee
Display ................................
80
Accessory
Navigator
TM
Display ...........................
80
Comfort
Network@
Interface
......................
8O
Heat Exchanger
...............................
80
Accessories
...............................
82
SPA(E
TEMPERATURE
SENSOR
(T-55)
SPA(E
TEMPERATURE
SENSOR
(T-56)
SPACE TEMPERATURE
SENSOR
(T-58)
SPA(E
TEMPERATURE
SENSOR AVERAGING
POWER
EXHAUST
TWO-POSITION
DAMPER
INDOOR
AIR QUALITY
OUTDOOR
AIR QUALITY
SMOKE
DETE( TORS
FILTER STATUS
FAN STATUS
Manufacturer reserves the right to discontinue,
or change at any time, specifications
or designs
without
notice and without
incurring obligations.
Catalog No 04-53480028-01
Printed io U.SA
Form 48/50PG-5T
Pg 1
6-06
Replaces: 48/50PG-2T
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Table of Contents
Troubleshooting
Related Manuals for Carrier 50PG20-28
Summary of Contents for Carrier 50PG20-28
-
Page 1: Table Of Contents
• AIR BAFFLES Retu m-Air Filters .......... indoor Air Quality ........Outdoor-Air Inlet Screens ........Temperature Compensated Start ......Gas Heat (48PC Only) ........Carrier Comfort Network@ (CCN) Configuration ..Orifice Change (48PC Only) ........ Alarm Handling ........... Power Supply .......... - Page 2 The ComJbrtLink control is fully colnmunlcating and personnel can perform the basic maintenance functions of cable-ready for connection to the Carrier Colnfort NetworkS, R) replacing filters. Trained service personnel should perform all (CCN) building managelnent system. The control provides other operations.
-
Page 3: Scrolling Marquee
to the AUTO VIEW display category as shown under the RUN Scrolling Marquee -- This device is the keypad imer- face used to access the control information, read sensor values, STATUS category. To show the top-level display, press the and test the unit. The Scrolling Marquee is located in the main control box and is standard on all units. -
Page 4: Ccn Tables And Display
01) device is a component of Ca_cier's 3V system and serves ration--_UNIT--_T.CTL = 1 (1 Stage Y1). as a user-interface and confimlration tool for all Carrier com- municating devices. The System Pilot device can be used to in- Pressing the _... - Page 5 Table 2 -- Scrolling Marquee Menu Display Structure SERVICE TIME OPERATING ALARMS TEMPERATURES PRESSURES SETPOINTS INPUTS OUTPUTS CONFIGURATION STATUS TEST CLOCK MODES Auto View Service Test Mode Suction Control ResetAII Occupied Cool Thermostat Fan Outputs Display Time of Day Status Pressure Modes Current...
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Page 6: Start-Up
START-UP various motor pulley settings. To alter tan performance, see Evaporator Fan Performance Adjustment section on page 87. Use the t'ollowing information and Start-Up Checklist on Condenser Fans and Motors -- Condenser thns and page CL-1 to check out unit PRIOR to start-up. motors are factory set. -
Page 7: Power Supply
Air Baffles -- The 48/50PG units with Humid-MiZer orifice size for the elevation. Purchase these orifices from your option are equipped with Motonnastera) control to maintain local Carrier dealei_ Follow instructions in accessory Installa- adequate discha_e pressure for proper unit operation during tion Instructions to install the correct orifices. - Page 8 Table 4 -- Fan Performance -- 48PGE20 -- Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE(in. AIRFLOW (Cfm) 5000 1.80 1,53 5500 1.90 6000 2.32 6500 2.79 7000 3.33 7500 3.93 4.30 4.65 1038 8000 4.59 4.98 1036 1079 8500 1036 1080 5.32 1121...
- Page 9 Table 5 -- Fan Performance --48PGF20 --Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 5000 1.53 1.80 2.06 5500 1.90 2.19 2.47 6000 2.63 2.93 6500 3.12 3.44 7000 3.68 4.02 7500 4.30 5.00 1038 4.65 8000 4.59 4.98 1036...
- Page 10 Table 6 -- Fan Performance -- 48PGD24 -- Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Rprn 1.82 5,500 2.21 6,000 2.67 3.95 6,500 3.17 7,000 3.74 4.48 1017 7,500 4.36 4.77 1012 1056 8,000 5.05 1008 1053 1096 8,500...
- Page 11 Table 7 -- Fan Performance -- 48PGE24 -- Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Rprn 1.90 2.19 2.47 5,500 2.63 2.93 6,000 3.12 3.44 6,500 3.68 4.02 7,000 4.30 4.65 5.00 1038 7,500 4.59 4.98 5.35 1036 5.71...
- Page 12 Table 8 -- Fan Performance -- 48PGF24 -- Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Rprn 1.90 5,500 2.32 6,000 2.79 6,500 3.33 7,000 3.93 4.30 1038 7,500 4.65 4.59 4.98 1036 1079 8,000 6.32 1036 1080 8,500 1121...
- Page 13 Table 9 -- Fan Performance -- 48PGD28 -- Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Rprn Rprn Rprn 2.84 3.18 6,500 3.38 3.77 7,000 3.99 4.42 1024 7,500 4.65 5.13 1030 1067 8,000 5.38 5.91 1038 1076 1112 8,500...
- Page 14 Table 10 -- Fan Performance -- 48PGE28 -- Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 4.25 6,500 1000 4.88 7,000 1005 1043 5.60 7,500 1015 1052 1088 6.40 8,000 1026 1064 1134 7.28 8,500 1100 1033 1076 1114 1148...
- Page 15 Table 11 -- Fan Performance -- 48PGF28 --Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Rprn 2.99 3.30 6,500 3.58 1000 3.92 7,000 4.61 1005 1043 7,500 4.24 4.98 5.37 1015 1052 8,000 1088 5.78 1026 6.20 1100 1134 8,500...
- Page 16 Table 12 -- Fan Performance -- 50PG20 --Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 5000 1.27 1.54 1.82 5500 1.57 1.86 6000 1.92 2.21 6500 2.31 7000 7500 4.61 8000 4.47 4.83 8500 4.40 4.74 5.09 1003 9000 5.06...
- Page 17 Table 13- Fan Performance- 50PG24- Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 1,57 1.86 2.15 2.44 2.73 5,500 1.92 2.21 2.52 2.82 3.13 6,000 2.31 2.61 2.93 3.25 3.58 6,500 2.75 3.06 3.39 3.73 4.07 7,000 3.24 3.57 3.91...
- Page 18 Table 14 -- Fan Performance -- 50PG28 --Vertical Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 6,500 7,000 7,500 1006 8,000 1046 1008 8,500 1086 9,000 1003 1049 1127 1042 1089 9,500 1010 1167 1079 1128 10,000 1002 1047 1207 1006...
- Page 19 Table 15 -- Fan Performance -- 48PGD20 -- Horizontal Supply and Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 5000 2.55 2.93 3.21 1019 1066 3.17 5500 3.56 1036 3.53 1083 1127 4 28 3.90 6000 1013 1060 3.96 1105 4.35...
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Page 20: Pg24
Table 16 -- Fan Performance -- 48PGE20 -- Horizontal Supply and Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 5000 2.74 1035 1083 5500 3.38 1003 1053 1100 1145 4.49 6000 1029 3.74 1077 1123 1167 1210 6500 1106 4.67 1151... - Page 21 Table 17 -- Fan Performance -- 48PGF20 -- Horizontal Supply and Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 5000 2.74 3.04 1083 3.34 1035 5500 1003 3.32 1053 1145 3.70 1100 6000 1029 1077 4.15 1123 1210 4.56 1167 6500...
- Page 22 Table 18 -- Fan Performance -- 48PGD24 -- Horizontal Supply and Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Rprn 3.26 1036 1083 1127 5,500 1013 3.58 1060 1105 4.35 1149 1191 6,000 1089 4.49 1133 1175 1216 1256 6,500 1166...
- Page 23 Table 19 -- Fan Performance -- 48PGE24 -- Horizontal Supply and Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 1003 3.32 1053 3.70 1100 4.09 1145 5,500 1029 1077 4.15 1123 4.56 1167 4.98 1210 6,000 1106 4.67 1151 5.11 1194...
- Page 24 Table 20 -- Fan Performance -- 48PGF24 -- Horizontal Supply and Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Rprn 3.38 1003 1053 1100 1145 5,500 1029 3.74 1077 1123 1167 1210 6,000 1106 4.67 1151 1194 1236 6,500 1276 1184...
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Page 25: Pg28
Table 21 -- Fan Performance -- 48PGD28 -- Horizontal Supply and Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Rprn 3.06 6,500 3.26 3.69 3.89 7,000 4.40 1026 7,500 4.61 5.20 5.40 1007 1037 1070 8,000 1012 6.08 1034 6.29 1059... - Page 26 Table 22 -- Fan Performance -- 48PGE28 -- Horizontal Supply and Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 4.24 6,500 4.87 7,000 1006 1042 5.59 7,500 1024 1055 1088 6.40 8,000 1029 1052 1078 1136 7.30 8,500 1106 1087 1132...
- Page 27 Table 23 -- Fan Performance -- 48PGF28 -- Horizontal Supply and Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) Rprn Rprn 3.14 3.35 6,500 3.79 4.00 7,000 4.52 4.74 1006 1042 7,500 5.33 5.55 1024 1055 1088 8,000 1029 8.24 1052...
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Page 28: Pg20
Table 24 -- Fan Performance -- 50PG20 -- Horizontal Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 5000 1,37 1.61 2.33 5500 1.71 1.96 2.71 6000 2.09 3.14 6500 3.63 7000 4.17 7500 4.47 4.77 8000 4.48 1022 5.43 4.60 8500... - Page 29 Table 25 -- Fan Performance -- 50PG24 -- Horizontal Supply/Return Units AVAILABLE EXTERNAL STATIC PRESSURE (in. wg) AIRFLOW (Cfm) 1.71 1.96 2.21 2.45 2.71 5,500 2.09 2.35 2.62 2.88 3.14 6,000 2.53 2.80 3.08 3.35 3.63 6,500 3.02 3.30 3.59 3.88 4.17 7,000...
- Page 30 Refer to Tables 31 and 32 for Accessory/ 3. Use of a field-suppIied motor may affect wire sizing. Contact your local FlOP Static Pressure information Carrier representative for detaits Extensive motor and electrical testing on these units ensures that the full 4. InterpoIation is permissible.
- Page 31 Table 28 -- Air Quantity Limits (50PG20-28 Units) ELECTRIC HEAT ELECTRIC HEAT COOLING 5OPG ELECTRIC HEAT (Vertical) (Horizontal) Minimum Maximum MINIMUM MINIMUM High Heat (75 kW) 4,500 5.400 5000 4.800 9,000 Medium Heat (50 kW) 3,756 Low Heat (25 kW) 3,750 3.750 5.400...
- Page 32 Table 29 -- Evaporator Fan Motor Specifications -- 48PG20-28 Units (cont) UNIT DRIVE ORIENTATION NOMINAL VOLTAGE MAX WATTS EFFICIENCY MAX BHP MAX BkW MAX AMPS 48PG 4578 87.5 4.01 5115 87.5 6.00 4.48 Vertical 5115 87.5 6.00 4.48 5015 87.5 5.88 4.39 4578...
- Page 33 Table 30 -- Evaporator Fan Motor Specifications -- 50PG20-28 Units (cont) UNiT DRIVE ORIENTATION NOMINAL VOLTAGE MAX WATTS EFFICIENCY MAX BNP MAX BkW MAX AMPS 50PG 3700 3.17 10.6 3700 3.17 Vertical 3700 3.17 5015 4.39 4578 4.01 5115 4.48 Mid-Low Vertical 5115...
- Page 34 Table 31 -- Accessory/FlOP Static Pressure (in. wg)* -- 48/50PG20-28 Units 4,500 7,009 7,500 8,000 Economizer 0.02 8.03 0.87 0.08 0.09 0.10 0.10 0.25 0.32 0.40 0.47 Humidi-MiZer COMPONENT (20, 24) 4,000 5,000 5,500 6,000 6,500 Humidi-MiZer (28) 0.05 0.I3 0.21 0.29 9,909...
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Page 35: Controls Quick Start
Table 34 -- Fan Rpm At Motor Pulley Settings* -- 50PG20-28 MOTOR PULLEY TURNS OPEN 50PG DRIVE 11t2 21/2 3q 2 41/2 5tt2 Low Range Vertical 1013 1035 1056 1078 1099 1120 1142 1163 1185 I206 Mid-Low Range Vertical 1000 1019 1039 1059... -
Page 36: Service Test
SERVICE TEST Control Configuration Checklist- Refer to check- list CL- 1 for recording site specific unit control configurations. The Service Test function can be used to verify proper oper- Programming Operating Schedules ation of compressors, heating stages, indoor tan, outdoor finis, controls wilt accomlnodate up eight differ- power exhaust tans, economizer, and atann relay. - Page 37 Table 35 -- Setting an Occupied Time Schedule -- Weekdays Only for 7:30 to 22:30 DISPLAY SUB-SUB KEYPAD ITEM DISPLAY ITEM EXPANSION COMMENT MENU MODE ENTRY TIMECLOCK Local Occupancy Schedule SCH.L PER.1 OCC.I Period Occupied Time 00.00 Scrolling stops 00.00 Hours Flash 07.00 Select...
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Page 38: Third Party Control
Table 36 -- Service Test Modes and Submodes Directory DISPLAY MENU/ EXPANDED TABLE/ VALUES UNITS DEFAULT SUB-MENU/NAME NAME NAME SUB-TABLE SERVICE TEST MAINTENANCE DISPLAY TEST Field Service Test Mode On/Off (TEST = display onty) INDP Test Independent Outputs TESTINDP ECON Economizer Position Test 0to100... -
Page 39: Iaq Sensor
IAQ Switch -- For units with the economizer option or Operating Modes, system mode is displayed as expandable text. accessory and the ECB control board, the IAQ switch input is provided on the field connection terminal board (TB2). The RUN STATUS OPERATING MODES IAQ Switch Input configuration,... -
Page 40: Occupancy Determination
Shut Down on IDF Failure (IDF..F) This conli_ration unoccupied. If the unit is operating with a space temperature applies only ifa tan switch is installed and configured. A YES sensor (T-55, T-56 or T-58), occupancy affects the unit set value wilt enable diagnostic Alert T409 to shut down the unit points and the operation of the economizer. -
Page 41: Control
Indoor Fan -- The indoor thn is controlled by the indoor ensure proper time delays and SAT control when the econo- mizer is cooling. Cooling begins when the Y1 input is ener- tan relay output (Outputs--->FA?_i9--->IDF) o n the MBB (main base board) control, wNch then operates the indoor tan contac- gized. - Page 42 Two methods are used to add and relnove stages of cooling level 1when Fan LEV0 Max Pressure limit is reached. Chang- for units with more than one compressor. The first method es between levels 1 to 3 are initially selected based on outdoor causes the unit to operate around its steady-state number of air temperature (OAT) input and the level On and Off tempera- stages.
- Page 43 If the indoor tan control isconfigured tocycle withthe heat- is satisfied, the MBB will mm off HT. 1 which will turn off gas ing demand ( (bnfiguration---_UNIr_OC.FN to the main burners. No) the thn will stop after delay, (bnfiguration---_ conligured If the user has selected Adaptive (see Cooling section) for...
- Page 44 The control uses rvvomethods to add a stage of heating. The indoor tan wilt follow the HT. 1 output. During cominuous tan, first method will add a stage of heating when the indoor tan will follow the G input. Heating Demand (Operating Modes-+HEAT---aqPT-+...
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Page 45: Humidi-Mizer
SPACE S ENSOR CONTROL If theunitis in cooling, Free Cooling ((bnfiguration--+E_DN--+UEFC), Free Cool- operating under space t cnnperature control, theeconomizer ing Preoccupancy Time (Configuration--_E(ON--_FC. available forcooling, and nocompressors areoperating, the Free Cool Ternp Limit ((bnfiguration--_ economizer willcontrol theSAT toeither Setpoints--->LCgP or ECON--_FC.LO). - Page 46 Outdoor f an controlfor Humidi-MiZer sTstem units Compressor staNng control forHumid-MiZer units requires includes aMotonnaster(r9 variable-speed control ofsome o rall that c ircuit A always operate when circuit B ison. T his applies outdoor Pans, depending onunitmodel size. The Motonnaster tonormal operation, service test, and forcontrol alarm respons- control automatically...
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Page 47: Humidity Sensor
RH2.x METERING DEVICE _,-_,_ CLOSED VALVE OPEN VALVE 3-WAY VALVE INDOOR ENTERING Fig. 8 -- Hot Gas Reheat Mode (Reheat2) -- Humidi-MiZer System Space Humidity Switch (Configuration --yUNIT--yRH.SVV) multiple circuits in Reheat2 mode. This delay is overridden by Set to 1 for use of a normally open switch, or 2 tbr normally a zero demand t;_r dehumidification or a positive delnmld for closed switch. - Page 48 REHEAT MODE SELECTION PROCESS Selection ofthe reheat mode foreach r efi-igerant circuit i sdetermined fiomthe space h umidity ( tiomRHsensor or switch input) a ndthe circuit cooling d elnand (fiom space temperature sensor orther- mostat input). Table 4 2shows theconesponding circuit m ode and output status forthe different demand combinations.
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Page 49: Indoor Air Quality
\\\\ \\\\\\\\\\ _\\\\\ \\\\\\\\\ PLACES ON 020 PLACES O_ 628 Et_CHS_E Fig. 10- Wind Baffle Dimensions relnove contaminants and CO 2generated by sources other than Indoor Air Quality (IAQ) -- The (7omfbrtLink con- people. The ECMN should be set to an economizer position trol has the capability for several methods of demand ventila- that brings in enough flesh air to remove contaminants and tion control, hldoor air quality is typically measured using a... -
Page 50: Economizer
---_ECMN o r Configuration---_AIR.Q_OVR.P to provide OUTDOOR QUALITY (Analog Input) economizer cooling. ComJbrtLink control is configured for outdoor air quality sen- sors which provide 4 to 20 mA for 0 to 2000 ppm. If a sensor IA.CF = 3 (Control Minilnmn Position) When IA.CF = has a different range, the ppm display range must be reconfig- 3, an external 4 to 20 mA somce is used to set the minilnum... - Page 51 Free Coot mode will be stopped. FAN ENABLE (IAQ Switch Input) The DCV algorithm will operate whenever the building is occupied and the indoor Carrier Comfort Network® (CCN) Configura- tan is operating or the whenever the IAQ algorithm has caused...
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Page 52: Troubleshooting
Timed Override Hours (SCH.O_OV.EX) This displays ALARM RELAY OUTPUT The alarm relay output is a the current number of hours left in an override. It is possible to nonnalty open 24 vac output between field connection terminal board terminals C and X. Selection of which alerts and alarms cancel an override in pr%mess by writing "0"... - Page 53 Table 43 -- ComfortLink Alarm Codes ALARM ALERT DESCRIPTION ACTION TAKEN RESET PROBABLE CAUSE NUMBER BY CONTROL METHOD T051 Compressor A1 Safety Trip Add Strike for Circuit A Automatic errorHigh-pressure s witch open Compressor internal protection open. Wiring Compressor A1 Current Detected After Turnoff Turn off all compressors...
- Page 54 The MBB Ms one yellow LED which is compressor stops, and the CS no longer detects current, used to indicate CCN communication activity. The Carrier causing the control to activate this alert. Comfort Network,_R)(CCN) LED will blink during times of 2.
- Page 55 and there is nocurrent, verilyCSwiringand replace if 240 F (40 to 116 C). This alert wilt only occur if the unit is necessary. confimlred for a return air sensor. There is no control action as a result of this alert. This alert resets automatically. The cause 4.
- Page 56 return a ir, o rstuck o pen e conomizer when t he ambient tempera- upon its conlimaration. This alarm is usually caused by an aux- ture islow. iliary device that is trying to shut down the unit, e.g., smoke de- tector.
- Page 57 Alert Code T412 (W2 without Wl) This alert occurs in corrected and cleared, operation of the compressors and fmls Thermostat mode when W2 is energized and Wl is not. Veri_ may be verified by using the Sel_qceTest mode (see page 36 and thermostat and thermostat wiring.
- Page 58 Table 44 -- Cooling Service Analysis PROBLEM CAUSE REMEDY Power failure. Compressor and Fan Will Not Start. Call power company Fuse btown or circuit breaker tripped Check CB1, CB2, and Replace fuse or reset circuit breaker. Disconnect Power disconnect. Compressor time guard to prevent short cycling Check using ComfortLink Scrolling Marquee.
- Page 59 Table 45 -- Humidi-MiZer Service Analysis PROBLEM CAUSE REMEDY General cooling mode problem See Cooting Service Analysis (Table 44). Subcooling Reheat Mode No dehumidification demand. See No Dehumidification Demand, below. Will Not Activate. Circuit RH1 valve is not open See RH1 Valve Operation, below General cooling mode probIem See Cooting Service Analysis (Table 44).
- Page 60 Enter Service Test mode and run the Calibrate Outdoor Damper Does Not Fully Close at 0% or Fully Open at 100%, Economizer (E.CAL) procedure. LEGEND Carrier Comfort Network® Indoor Air Quality PHASE REVERSAL PROTECTION If the control sens- Heating Troubleshooting-...
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Page 61: Controls Operation
A redLEDisprovided toindicate the function ofthe board. REFRIGERANT TEMPERATURES Condenser coil tem- See the table b elow. peratures are measured with 5 kilo-ohin thermistors. These measurelnents provide an approximate saturated condensing LED STATUS FUNCTION telnperature tbr each circuit (SCT.A, SCT.B). Ensure that ther- On Continuously Relay contact closed (normal operation). - Page 62 Table 48 -- IGC Board LED Alarm Codes LED FLASH DESCRIPTION ACTION TAKEN BY RESET METHOD PROBABLE CAUSE CODE CONTROL Normal Operation Hardware Faiture No gas heating Loss of power to the IGC Check 5 amp fuse on IGC, )ower to unit, 24V circuit breaker, transformer, and wir- ing to the IGC.
- Page 63 BOARD I FLASH - INDOOR F/_ D_.AY MOC_FIED (HEA_NG) I_ i - OPENING OF UMff 2. DEFEC]/VE 24V TRANS. INDICATES _ Win-{ & _V_RE 3 FLASHES - FLAME SENSOR CLOSED GAS VALVE 4. NO PO_R_R TO UNIT 4 TIMES ON SINGLE CALL FOR HEAT - LIMFF SW_CH HEAllNG...
- Page 64 adjustments to IAQ and OAQ sensor readings. The space temperature may be COlTectedby entering either a calibration temperature value in SPT.C, or an oit;et temperature value in SPT.Z The supply-air temperature may be corrected by enter- ing either a calibration temperature value in SAT.C, or an oit;et temperature value in SAT.!] Telnperamre corrections should only be made if sensor readings are compared to an accurate reference temperature measurelnent device.
- Page 65 Table 50 -- Temperature (°F) vs ResistanceNoltage Drop Values for OAT, SAT, and SPT Thermistors (10K at 25 C Resistors) TEMP VOLTAGE RESISTANCE TEMP VOLTAGE RESISTANCE TEMP VOLTAGE RESISTANCE DROP (V) (Ohms) DROP (V) (Ohms) DROP (V) (Ohms) 4.758 2.994 0.890 I96,453 14,925...
- Page 66 Table 51 -- Temperature (°F) vs. Resistance/Voltage Drop Values for SCT Sensors (5K at 25 C Resistors) VOLTAGE VOLTAGE VOLTAGE RESISTANCE TEMP TEMP RESISTANCE TEMP RESISTANCE DROP DROP DROP (Ohms) (Ohms) (Ohms) 3.699 1.982 0.511 7,866 98,010 1,190 1.956 0.502 3.689 7,665 1,165...
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Page 67: Integrated
' 1'. Do not change this setting. boards and a majority of the field-installed accessories. See Fig. 25 and Table 56. The interthce connection for the Carrier Economizer Control Board (ECB) -- The ECB con- Comfort Newvork¢<3 (CCN) colrnnunication and interthce con-... - Page 70 I! I ., 2 2 i i, =i=,i: -'o_l::L_:...
- Page 72 _ ELECIRIC HEAT LAREL OF_3 OF_6 Fig. 18 _ Power Schematic _ Units without Humidi-MiZe rT_ System...
- Page 73 I!F _LN SEE 1 _LN<_ OPTION DEPENDENT LABEL_ FIELDJ HACR Frqq CSAI _(__YEL CONPA1 (__BLU CCHNI K!>t2N EQUIP GND _BLK PL4 2 _YEL PLV 3 PL4 1 {_BLU %N%N NLRI IRT NLRI O T TPL21 5 OFCI PL5 3 PLIO P_FAN BRNp_LL _ OFM1 I_]_BLU-(eYEL@...
- Page 74 ooooo_...
- Page 75 1t.,...
- Page 76 YELLOW LED - - STATUS GREEN CCN (CARRIER COMFORT NETWORK) (LOCAL EQUIPMENT NETWORK) INSTANCE JUMPER (SET TO 1) STATUS FFFFrmDEB Fig. 22 -- Main Base Board (MBB) Table 53 -- MBB Connections CONNECTION DISPLAY NAME POINT DESCRIPTION SENSOR LOCATION TYPE...
- Page 77 RED LED GREEN LED-LEN STATUS (LOCAL EQUIPMENT NETWORK) Fig. 23 -- Economizer Control Board (ECB) Table 54 -- ECB Connections DISPLAY NAME POINT DESCRIPTION SENSOR LOCATION TYPE OF I/O CONNECTION PIN NUMBER INPUTS Input power from MBB control box 24 VAC J1, !-2 RMOC Remote occupancy...
- Page 78 LED-STATUS UUUUUU., LH33WPOO2A 1088-12 Fig. 24 -- Integrated Gas Control (IGC) Board Table 55 -- IGC Connections TERMINAL LABEL POINT DESCRIPTION SENSOR LOCATION TYPE OF I/O CONNECTION PIN NUMBER INPUTS RT, C Input power from TRAN ! control box 24 VAC Speed sensor gas section analog input...
- Page 79 SPTO or RAT Return air temperature Local Equipment Network (LEN) communication J13, 1-3, 4-5 Carrier Comfort Network (CCN) communication J13, 6-8, 4-5 *Refer to Third Party Control section on page 38 for information on wiring fire shutdown with a Humidi-MiZer system.
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Page 80: Carrier
4. The RJ14 CCN connector on TB2 can also be used, but is ant continues its normal path to the main TXV and the only inteMed tbr temporary connection (for example, a evaporator. See Fig. 29. laptop computer running Carrier net_xx_rk sot_vare). - Page 81 CCN BUS ROOFTOP UNIT BUiLDiNG SUPERVISOR NETWORK OPTIONS UNIT UNIT ROOFTOP ROOFTOP LEGEND Carrier Comfort Network@ ComfortLink ControIs HEATING/COOLING UNITS Digital Air Volume HVAC Heating, Ventilation, and Air Conditioning Terminal Control Unit CCN SITE -- GATEWAY REMOTE AUTODtAL ADDITIONAL MINALS...
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Page 82: Field-Installed
ENBL. A SAT sensor in the supply duct is the preferred con- TWO-POSITION DAMPER This accessory wires direct- figuxation for systems with Carrier VVT,_R) c ontrols. ly into the low voltage circuit tbr the indoor fan control. No other control configuration is needed. SPACE HUMIDITY SENSOR The space relative humidi- ty sensor (part no. - Page 83 WHITE (GND)- _--) ©© - - BLACK (-) ..\ - - WHITE (GND)- - - RED (+)- LEGEND Carrier Comfort Network Fig. 33 -- 1"-58Communicating Space Fig. 31 -- T-55 Space Temperature Sensor Wiring Temperature Sensor Wiring (PIN 33ZCT55SPT)
- Page 84 TB2-T55 TO MAIN BASE BOARD SENSOR SENSOR SENSOR3 SENSOR4 SPACE TEMPERATURE AVERAGING -- 4 T-55 SENSOR APPLICATION TB2-T55 TO MAIN BASE BOARD SENSOR SENSOR SENSOR _,Ii 2 LEGEND Terminal Block Factory Wiring Field Wiring SENSOR SENSOR SENSOR _i i _ IL==@ SENSOR SENSOR...
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Page 85: Service
Totaline,oR) enviropanentally sound coil cleaner is essential to Puron,_R)(R-410A) reliigerant systems operate at higher extend the life of coils. This cleaner is available fioru Carrier pressures than standard R-22 systerus. Do not use R-22 Replaceruent parts division as part nuruber P902-0301 for a... -
Page 86: Lubrication
NOTE: DoNOTUSE water in excess of 130 F,astheenzy- matic a ctivity w illbedestroyed. 5. Thoroughly apply Totaline e nviropanentalty scumcoil cleaner solution toallcoilsurfaces including finned a rea, tube sheets and coil h eaders. 6. Hold garden sprayer nozzle c lose t ofinned a reas and ap- plycleaner withavertical, up-and-down motion. -
Page 87: Manual Outdoor Air Damper
2. Cover area in tiontofthe unitservice panel withaterry 4. Screw movable flange toward fixed flange to increase clothshop towel t oabsorb l ubricant spills andprevent speed and away fioln fixed flange to decrease speed. run-oft;. T owel wilt alsoprotect dropcloth f iomtears Increasing fan speed increases load on motor. -
Page 88: Condenser-Fan Adjustment
Evaporator Fan Belt Tension Adjustment -- To Verify Sensor Performance -- Verit) that thermistor, adjust belt tension: transducer, and switch inputs (see Tables 50-52) are reading correctly. These values can be accessed through the Scrolling 1. Turn offunit power. Marquee display in the Temperatures, Pressures, and Inputs 2. -
Page 89: Refrigerant Charge
Refrigerant Charge -- Amount of refrigerant charge is listed on unit nameplate. Refer to Carrier GTAC II; Module 5; ChaNing, Recovery, Recycling, and Reclmnation section for charNng methods and procedures. Unit panels must be in place when unit is operating during charging procedure. - Page 90 Recovery cylinder service pressure rating must be 400 psig. CHARGING CHART (ALL CIRCUITS) Puron systems should be charged with liquid refiigerant. Use a ALL OUTDOOR FANS MUST BE OPERATING comlnercial-type metering device in the manifold hose. Mani- fold sets should be 750 psig high-side and 200 psig low-side with 520 psig tow-side retard.
- Page 91 Includes a 4% input reduction per each 1000 ft. higher altitudes. Includes a 4% input reduction per each 1000 ft. 1-Orifices available through your Carrier dealer. 1-Orifices available through your Carrier dealer.
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Page 92: Filter Drier
Replacement Parts -- A complete list of replacement main locked out until an alarm reset is initiated via CCN or parts may be obtained tiom any Carrier distributor upon manually via the Scrolling Marquee display (see Atanns and request. Alerts section on page 54 for more details). -
Page 93: Ccn Tables
APPENDIX A--LOCAL DISPLAY AND CCN TABLES MODE -- RUN STATUS WRITE TABLE/ ITEM EXPANSION RANGE UNITS POINT STATUS SUB-TABLE RUN STATUS STATUS DISPLAY VIEW Auto View of Run Status (VIEW = Display only) HVAC HVAC Mode Status 1=Disabled 2=Fan Only 3=Cool 4=Heat Yes/No... - Page 94 APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE- RUN STATUS (cont) CCN TABLE/ WRITE EXPANSION ITEM RANGE UNITS SUB-TABLE POINT STATUS RUN STATUS (cont) COOL (cont) CIR.B Refrigerant Circuit B CMP, B COMP Compressors On/Off TG.B TIMGD- B Timeguard CS,B1 CS B1-...
- Page 95 APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE -- SERVICE TEST CCN TABLE/ WRITE ITEM EXPANSION RANGE UNITS DEFAULT SUB-TABLE POINT STATUS SERVICE TEST MAINTENANCE DISPLAY TES T Field Service Test Mode Forcible On/Off (TEST = display only) INDP TESTINDP Test Independent...
- Page 96 APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE -- SET POINTS DISPLAY MENU/ CCNTABLE/ EXPANDED VALUES UNITS DEFAULT SUB-MENU/NAME NAME NAME SUB-TABLE SETPOINT CONFIGURATION SETPOINTS SET_PNT OCSP ocsP Occupied Cool Setpoint 55 to 80 UCSP ucsP Unoccupied Cool Setpoint 75 to 95 OHSP OHSP...
- Page 97 APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE -- CONFIGURATION ITEM EXPANSION RANGE UNITS DEFAULT CCN TABLEISUB-TABLE CCN POINT PAGE NO. CONFIGURATION SERVICE CONFIGURATION DISP DISPLAY Display Configuration METR Metric Display On/Off DiSPUNIT LANG Language Selection 0=English LANGUAGE 1=Spanish 2=French 3=Portuguese...
- Page 98 APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE -- CONFIGURATION (cont) EXPANSION RANGE UNITS DEFAULT CCN TABLE/SUB=TABLE CCN POINT PAGE NO. ITEM CONFIGURATION (cont) COOL (cont) CIR, B Circuit B CS,B1 Enable/Disable Enable B1 SENSE B1 Current Sensing BI .FN B Circuit Level 1 Fans 0 to 7...
- Page 99 APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE -- CONFIGURATION (cont) RANGE UNITS DEFAULT CCN TABLE/SUB-TABLE CCN POINT PAGE NO. ITEM EXPANSION CONFIGURATION (cont) HMZR HumJdimizer Config HMZR CFG 42, 47 Yes/No No: no Humidi-MiZer FiOP REHEAT 47, 56 REHT Humidimizer Equipped...
- Page 100 APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE -- CONFIGURATION (cont) RANGE UNITS DEFAULT CCN TABLE/SUB=TABLE CCN POINT PAGE NO. ITEM EXPANSION CONFIGURATION (cont) AIR.Q Air Quality Configuration IAQ_CFG 0=No IAQ 0: no FlOP IAQANCFG 39,49.82 IA.CF IAQ Analog input Config 1 =Demand Venfilation I : FlOP...
- Page 101 APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE -- TIME CLOCK CCN TABLE/ EXPANSION RANGE UNITS DEFAULT ITEM POINT SUB-TABLE TIME CLOCK CONFIGURATION TIME Time of Day Hour and Minute TiME xx.xx hh.mm not in CCN tabte) Current Date DATE Month of Year MNTH...
- Page 102 APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE -- OPERATING MODES CCN TABLE/ WRITE ITEM EXPANSION RANGE UNITS SUB-TABLE POINT STATUS OPERATING MODES MAINTENANCE DISPLAY Control Modes MODES MODE MODE System Mode text string HVAC HVAC Mode HVACMODE text string Yes/No OCCUPIED...
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Page 103: Ccn Tables
APPENDIX A -- LOCAL DISPLAY AND CCN TABLES (cont) MODE -- OPERATING MODES (cont) CCN TABLE/ WRITE ITEM EXPANSION RANGE UNITS SUB-TABLE POINT STATUS MAINTENANCE DISPLAY OPERATING MODES (cont) ECON ECONDIAG Economizer Diagnostic EC,EN Economizer InstaNed Yes/No ECONO Yes/No OCCUPIED Forcible Currently Occupied... - Page 104 APPENDIX B -- CONTROL MODES WITH HUMIDI-MIZER SYSTEM AND ECONOMIZER Thermostat input shown tbr cooling demand (versus tem- Circuit Subcooling mode = REHEAT 1 perature sensor and set point). Humidistat input shown for Circuit HGRH mode = hot gas reheat = REHEAT 2 dehumidification demand (versus relative humidity sensor and Circuit ON mode = normal cooling set point).
- Page 106 Copyright 2006 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53480028-01 Printed in US.A. Form 48/50PG-5T Pg 106 6-06 Replaces: 48/50PG-2T...
- Page 107 CONTROL SET POINT AND CONFIGURATION Model Number: So.rare Versions: Serial Number: MBB: CESR131320-- Date: ECB: CESR131249-- Technician: MARQ: CESR131171-- INDICATE UNIT SETTINGS BELOW Control Type: Thermostat / T-55 Space Temp. / T-56 Space Temp. / T-58 Space Temp. Set Points: Cooling Occupied: Unoccupied:...
- Page 108 MODE -- CONFIGURATION (cont) ITEM EXPANSION RANGE DEFAULT ENTRY CONFiGURATiON (cont) COOL (cont) Supply Air Temperature SA.PD 0.5 to 10 AF SAT Cool Demand (+) Level SA.ND --I0 to --0.5 ^F SAT Cool Demand (-) Level SAT,U 35.0 to 65.0 dF Minimum SAT Upper Level SAT,L...
- Page 109 MODE -- CONFIGURATION (cont) RANGE DEFAULT ENTRY ITEM EXPANSION CONFIGURATION (cont) OFC (cont) 0 to 100 F no Humidi-MiZer FLOP: 3.OFF Fan Lev3 Off Temperature Humidi-MiZer FLOP: 78 (2O) 62 (24) 62 (28) HMZR Humidimizer Config REHT Yes/No No: no Humidi-MiZer Humidimizer Equipped FlOP Yes: Humidi-MiZer...
- Page 110 MODE -- CONFIGURATION (cont) ITEM EXPANSION RANGE DEFAULT ENTRY CONFIGURATION (cont) ECON (cont) FC.TM Free CooI PreOcc Time 1 to 9999 min FC.LO 0 to 70 dF Free Cool Low Temp Limit PE,EN Power Exhaust Installed Yes/No No: no FlOP Yes: FlOP PE.1 10 to 100 %...
- Page 111 MODE -- CONFIGURATION (cont) ITEM RANGE DEFAULT ENTRY EXPANSION CONFIGURATION (cont) TRIM Sensor Calibration SPT.C -30 to 120 dF Space Temp Calibration SPT.T -30 to 30 AF Space Temp Trim SAT.C --30 to 130 dF Supply Air Temp Calib. SAT.T -30 to 30 AF Supply Air Temp Trim RAT.C...
- Page 112 [] VERIFY REFRIGERANT CHARGE USING CHARGING CHARTS ON PAGES 89 AND 90 GENERAL [] ECONOMIZER MINIMUMVENT AND CHANGEOVERSETTINGSTO JOB REQUIREMENTS Copyright 2006 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.