Carrier 33ZCVAVTRM Specifications Page 136
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10
INDOOR AIR QUALITY CO
2
SENSOR INSTALLATION
(IAQ) — The indoor air quality sensor accessory monitors
carbon dioxide (CO
2
) levels. This information is used to moni-
tor IAQ levels. Three types of sensors are provided. The wall
sensor can be used to monitor the conditioned air space.
Sensors use infrared technology to measure the levels of CO
2
present in the air. The wall sensor is available with or without
an LCD readout to display the CO
2
level in ppm.
The CO
2
sensors are all factory set for a range of 0 to
2000 ppm and a linear mA output of 4 to 20. Refer to the
instructions supplied with the CO
2
sensor for electrical require-
ments and terminal locations.
To accurately monitor the quality of the air in the condi-
tioned air space, locate the sensor near a return-air grille (if
present) so it senses the concentration of CO
2
leaving the
space. The sensor should be mounted in a location to avoid
direct breath contact.
Do not mount the IAQ sensor in drafty areas such as near
supply ducts, open windows, fans, or over heat sources. Allow
at least 3 ft between the sensor and any corner. Avoid mounting
the sensor where it is influenced by the supply air; the sensor
gives inaccurate readings if the supply air is blown directly onto
the sensor or if the supply air does not have a chance to mix
with the room air before it is drawn into the return airstream.
Wiring the Indoor Air Quality Sensor
— To wire the sensors
after they are mounted in the conditioned air space or outdoor
location, see Fig. 7 and the instructions shipped with the sen-
sors. For each sensor, use two 2-conductor 18 AWG (American
Wire Gage) twisted-pair cables (unshielded) to connect the sep-
arate isolated 24 vac power source to the sensor and to connect
the sensor to the control board terminals. To connect the sensor
to the control, identify the positive (4 to 20 mA) and ground
(SIG COM) terminals on the sensor. Connect the 4-20 mA ter-
minal to terminal IAQ (RED) and connect the SIG COM ter-
minal to terminal GND (BRN).
Combination Temperature and CO
2
Sensor — If using a
combination temperature and CO
2
sensor (33ZCT55CO2 or
33ZCT56CO2), refer to the installation instructions provided
with the sensor. See Fig. 11 for wiring.
OUTDOOR AIR QUALITY CO
2
SENSOR INSTALLA-
TION (OAQ) — The outdoor air CO
2
sensor is designed to
monitor carbon dioxide (CO
2
) levels in the air and interface
with the ventilation damper in an HVAC system. The OAQ
sensor is packaged with an outdoor cover. See Fig. 12 and 13.
The outdoor air CO
2
sensor must be placed in an area that is
representative of the entire conditioned space. A mounting
height of 6 ft is recommended. For installation where it is not
necessary to reach the control, it may be mounted higher on the
wall or on the ceiling, provided the location represents a good
sampling of air.
Wiring the Outdoor Air CO
2
Sensor — Power requirements
are 18 to 36 VAC RMS 50/60 Hz; 18 to 42 vdc polarity
protected/dependent; and 70 mA average, 100 mA peak at
24 vdc. All system wiring must be in compliance with all
applicable local and national codes. A dedicated power supply
is required for this sensor. A two-wire cable is required to wire
the dedicated power supply for the sensor. The two wires
should be connected to the power supply and terminals 1 and 2.
To connect the sensor to the control, identify the positive (4 to
20 mA) and ground (SIG COM) terminals on the sensor. Con-
nect the 4 to 20 mA terminal OAQ (BLU) terminal J5-2. Con-
nect the SIG COM terminal to terminal GND (BRN) terminal
J5-3. See Fig. 11.
SUPPLY AIR
RETURN AIR
SUPPLY AIR
TEMPERATURE
SENSOR
ROOF
CURB
Fig. 9 — Typical Mounting Location for
Supply Air Temperature (SAT) Sensor
On Small Rooftop Units
DIRECT DRIVE
MOTOR
DIMPLED HEAT
EXCHANGER
SAT
LOCATION
Fig. 10 — Typical Mounting Location for Supply
Air Temperature (SAT) Sensor in Heat Exchanger
IMPORTANT: Be certain SAT does not come in contact with
heat exchanger tubes.
- Specification 1
- Mount Bypass Controller 6
- Dimensions in ( ) are in mm 9
- START-UP 16
- Display Units F 21
- 0.0 dF TEMP_CAL 21
- OPERATION 22
- System Pressure Operation 22
- Tab 1 1 a 1 3 a 24
- Features/Benefits (cont) 26
- Field-installed accessories 27
- Override 32
- Transformer ground 34
- Chassis Ground 34
- ZC — Zone Controller 48
- 24VAC/DC 50
- (IF USED) 52
- FIELD-SUPPLIED 53
- DRY CONTACT 53
- Perform System Checkout 54
- CONFIGURATION TABLES 57
- pressure and other 58
- as loading conditions on 60
- slidebar information 63
- 2.0 ^F SET_LIMT 66
- 2.0 ^F LOADLIMT 66
- MAINTENANCE TABLES 68
- System Mode Selection — 79
- → 3V™ System Mode Selection 83
- 3V™ Zone Damper Operation 84
- Limit such that: 86
- Table of contents 90
- VVT® system key components 91
- Dimensions (cont) 94
- Performance data 96
- Performance data (cont) 98
- Application data 99
- Application data (cont) 100
- (Locate upstream of damper) 101
- 2) and maximum 110
- 2 (if applicable) 110
- Features/Benefits 114
- Accessories 115
- Specifications 115
- Accessories (cont) 116
- Dimensions 116
- Installation Instructions 117
- CONNECTOR 118
- (PLUG-IN TYPE 118
- Communication Connections 120
- Related Documentation 120
- Smoke Control Applications 121
- CCN Bus Supervisor 122
- Comfort Controller 6400 123
- PRODUCT DATA 124
- Comfort Controller 6400-I/O 125
- Installation, Start-Up and 127
- Configuration Instructions 127
- INSTALLATION 128
- Inspection — 128
- Mount PremierLink™ Control 129
- 50HJQ014,016 UNITS 131
- FIELD WIRING 133
- Factory Wiring 135
- Field Wiring 135
- COVER REMOVED SIDE VIEW 138
- OA — Outdoor Air 141
- OAT — Outdoor Air Temperature 141
- MANUFACTURER CABLE PART NO 142
- Alpha 2413 or 5463 142
- American A22503 142
- Belden 8772 142
- Columbia 02525 142
- LEGEND 145
- N/C — Normally Closed 145
- N/O — Normally Open 145
- C7400A1004 146
- ACTUATOR 150
- 50TJ400812 150
- M9206-GGC-2 150
- Check-Out 151
- O) when occupied 154
- CONFIGURATION 157
- 0.0 ^F STO 158
- 2.0 ^F LIMT 165
- Rev Valve Heat Mode Cool Mode 167
- Heat ON OFF 167
- Cool OFF ON 167
- Book 1 4 178
- Tab 11a 13a 178
- Universal Controller 191
- Introduction 193
- About this Manual 195
- Numbers Specifications 196
- Overview 196
- 8 Inputs 196
- Features 197
- 8 Outputs 197
- Figure 1 199
- InstallationandWiring 201
- Installation and 203
- Panel Mounting 204
- Wall Mounting 205
- DIN Rail Mounting 206
- Power Wiring 207
- System Pilot 207
- Installation 207
- Power Supply 207
- Figure 5 208
- Power Connector Location 208
- Power Connector Pin 208
- Assignments 208
- Communication 209
- Grounding of Bus 210
- Figure 7 211
- CCN Communication Wiring 211
- Figure 8 212
- Communication Connector 212
- Location 212
- Sensor and Device 213
- General Input 214
- Sensor Wiring 214
- Externally Powered 215
- 4-20 mA Sensor Wiring 215
- Wiring T-56 Space 216
- Temperature Sensor 216
- Wiring ACI 10K-AN 216
- Configuration 217
- Guidelines 217
- Checkout 219
- Diagnostic LEDs 222
- External Devices 223
- Module Operation 223
- Additional Temperature to 227
- Resistance Conversions 227
- Input and Output 228
- Connection 228
- Tuning Control 229
- Definition of Terms 230
- Equations 231
- System Checkout 232
- Determination of 234
- Throttling Range 234
- Dual Loop PID Tuning 234
- Single Loop PID Tuning 238
- Appendixes 241
- Wire List 243
- Appendix B 245
- Figure 18 246
- Button for Clearing the 246
- Database 246
- Appendix C 247
- Item Value Comments 248
- Table C-1 248
- Quick Reference Guide 248
- (Continued) 248
- Reader's 257
- Comments 257
- Carrier Corporation 258
- One Carrier Place 258
- Farmington, CT 06034-4015 258
- Attn: CCN Documentation 258
- INSTALLATION 266
- General — 266
- Zone Controller Hardware — 266
- Field-Supplied Hardware — 266
- Mount Zone Controller 268
- ZONE Controller 269
- Connect Airflow Pickups — 271
- HF23BJ042 272
- Install Sensors 283
- Cool Warm 285
- BLK (GND) 285
- RED (SPT) 285
- Zone Controller 288
- Remote Occupancy Contact — 290
- Connect the Outputs — 290
- Perform System 293
- Check-Out 293
- Network Addressing — 294
- Initial Operation and Test — 294
- Airflow Check — 294
- Points Display Screen — 295
- Default Value 1 299
- 0 cfm OFFSET 303
- 2 F LIMT 305
- — This configuration deter 306
- 0 cfm SOFFSET 306
- Units cfm 307
- airflow 312
- Minimum Cooling 312
- Heat Master 314
- Ta b 11 a 1 3 a 316
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