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Carrier 35L Series Installation And Start-Up Instructions Manual

Dual duct terminal units variable volume system
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Installation and Start-Up Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . 2
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
CONTROL ARRANGEMENTS . . . . . . . . . . . . . . . . . 3
CCN Control Arrangement . . . . . . . . . . . . . . . . . . . 3
Arrangement (Field-Supplied) . . . . . . . . . . . . . . . 3
Pneumatic Control Arrangement . . . . . . . . . . . . . . 3
No Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 1 - Install Volume Control Box . . . . . . . . . . . 4
Step 2 - Make Duct Connections . . . . . . . . . . . . . 4
Wiring Connections - Electronic Analog
or DDC (Direct Digital Controls) . . . . . . . . . . . . . 4
CONTROL SET UP . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Set Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Maximum Airflow Set Points . . . . . . . . . . . . . . . . 7
Flow Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
PNEUMATIC CONTROLS. . . . . . . . . . . . . . . . . . . . . 8
Preparation for Balancing . . . . . . . . . . . . . . . . . . . . 8
(Control Sequences 1500-1523) . . . . . . . . . . . . . 8
Preventative Maintenance . . . . . . . . . . . . . . . . . . . . 9
Pneumatic Control Troubleshooting . . . . . . . . . . . 9
ANALOG CONTROLS . . . . . . . . . . . . . . . . . . . . . . 10
from Cold Duct) . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Analog Control Troubleshooting . . . . . . . . . . . . . 11
ComfortID™ CONTROLS. . . . . . . . . . . . . . . . . . . . 11
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53350005-01
Printed in U.S.A.
Form 35L-N-2SI
35L,N Dual Duct Terminal Units
Variable Volume System
Field-Wiring Connections. . . . . . . . . . . . . . . . . .11
ComfortID™ Controls Start-Up . . . . . . . . . . . . . . .18
CCN System Start-Up . . . . . . . . . . . . . . . . . . . . . . .19
• COMFORTID CONSTANT VOLUME DUAL DUCT
• COMFORTID VARIABLE AIR VOLUME DUAL DUCT
• COMFORTID VARIABLE AIR VOLUME DUAL DUCT
Pg 1
8-18
Replaces: 35L-N-1SI

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Summary of Contents for Carrier 35L Series

  • Page 1: Table Of Contents

    35L,N Dual Duct Terminal Units Variable Volume System Installation and Start-Up Instructions CONTENTS Install Sensors and Make Field-Wiring Connections....11 SAFETY CONSIDERATIONS ....2 •...

  • Page 2: Safety Considerations

    PRE-INSTALLATION General The 35L,N units are dual duct terminals available with facto- Fig. 2 — 35L Dual Duct Box ry-installed pneumatic, analog, and Carrier Comfort Net- work ® (CCN) Direct Digital Control (DDC) control options. See Table 1. Figure 2 shows the basic box. Figure 3 is an ex- ample of a unit identification label.

  • Page 3: Warranty

    3. Units rated with standard linear flow sensor. Contact Carrier for details about mounting field-supplied Warranty controls. All Carrier-furnished items carry the standard Carrier warranty. Pneumatic Control Arrangement CONTROL ARRANGEMENTS All control packages are pressure independent and include standard linear airflow sensors in both the hot and cold inlets...

  • Page 4: No Control

    • 1514 — Multi-function controller, RA-NO cold inlet, INSTALLATION NO hot inlet Step 1 — Install Volume Control Box • 1515 — Multi-function controller, RA-NO cold inlet, NC Move unit to installation area. Remove unit from ship- hot inlet ping package. Do not handle by controls or damper Constant volume control with cold inlet and discharge air extension rod.
  • Page 5 5200 0.16 0.09 7000 0.31 0.17 ® *CCN (Carrier Comfort Network ) controls permit a lower minimum flow. NOTES: P is the difference in static pressure across the assembly, with the damper fully open. To obtain Total Pressure, add the Velocity Pressure for a given CFM to the Static Pressure drop (P...
  • Page 6 *Assumes inlet flow sensor. For discharge flow sensor, use data for Less than 15-20% may result in greater than ±5% control of the ® next even size. CCN (Carrier Comfort Network ) controls permit a unit airflow. Some DDC controls, supplied by others, may have lower minimum flow.

  • Page 7: Control Set Up

    10000 120VAC 208VAC 240VAC 277VAC 3665 2840 2086 CLASS II 1449 TRANSFORMER (OPTIONAL) 1000 16 inch 14 inch 12 inch 10 inch ANALOG OR DDC CONTROLLER 24VAC 8 inch GROUND 6 inch 24 VAC POWER LEGEND — Direct Digital Controls Field Wiring Factory Wiring 0.01...

  • Page 8: System Calibration Of The Linear Averaging

    (35L only) in. wg for a size 8 unit yields an airflow of 275 cfm. Carrier inlet areas are shown in Table 6. The design air vol- Volume controller for units is shown in Fig. 8. ume is shown in this table. It can be determined from this ta-...

  • Page 9: Preventative Maintenance

    LO STAT P setting is the desired airflow limit when the RESET START setting is factory set at 8.0 psig. This is the lowest thermostat pressure that the LO STAT P airflow will thermostat pressure is less than, or equal to, the reset start begin to reset towards the HI STAT P airflow.

  • Page 10: Analog Controls

    ANALOG CONTROLS Balancing Procedures (Control Sequences 2400, 2440, 2470) The analog electronic control system is a pressure indepen- ADJUSTABLE dent volume reset control that uses KMC Controls CSP-5001 END STOPS controller-actuator. See Fig. 10. ΔP PORTS The system provides for independently adjustable set points for minimum, maximum, and auxiliary airflow limits.

  • Page 11: Analog Control Troubleshooting

    b. If damper is not moving, verify damper is not stuck or at end of travel. Check rotation jumpers for proper HEATING MAX position. COOLING MAX c. Change requested flow to make unit drive opposite direction. This can be accomplished by moving the set point sliders or 1) and 2) below.
  • Page 12 For units with hot and cold airstreams, locate SAT sensor Mount a field-supplied 4-in. x 4-in. x 20-in. extension probe at least 2 ft downstream (see Fig. 14). box over the duct sensor. Connect a conduit ( -in. nominal) to the zone controller enclosure and extension box.

  • Page 13: Space Temperature Sensor Installation And Wiring

    If wiring connection is made to the service jack, shield and drain wire from the sensor end of the cable. the connector can then be used to connect a network service tool with the Carrier Comfort Network ® system.

  • Page 14: Wiring The Ccn Network Communication Service Jack

    RED(+) WHT(GND) CCN COM BLK(-) (T56) BLK (GND) SENSOR WIRING RED (SPT) JUMPER TERMINALS AS SHOWN NOTE: Dimensions are in inches. Cool Warm Fig. 17 — Space Temperature Sensor and Wall-Mounted Humidity Sensor Mounting Fig. 19 — Space Temperature Sensor Wiring (33ZCT56SPT) Connect the sensor cable as follows: a.

  • Page 15: Primary Air Temperature Sensor Installation

    PRIMARY AIR TEMPERATURE SENSOR INSTALLATION A primary air temperature (PAT) sensor is used on a zone controller which is functioning as a Linkage Coordinator for a non-CCN (Carrier Comfort Network )/Linkage compatible ® air source. The part number is 33ZCSENPAT. See Fig. 20.

  • Page 16: Humidity Sensor (Wall-Mounted) Installation

    HUMIDITY SENSOR (WALL-MOUNTED) INSTALLATION The accessory space humidity sensor is field-supplied and installed on an interior wall to measure the relative humidity of the air within the occupied space. See Fig. 25. The use of a standard 2-in x 4-in. electrical box to accommo- date the wiring is recommended for installation.

  • Page 17: Connect The Ccn Communication Bus

    Refer to Step 3 on page 4 of the installation section for sensor wiring instructions. COMMUNICATION BUS WIRE SPECIFICATIONS The Carrier Comfort Network (CCN) Communication Bus wiring is field-supplied and field-installed. It consists of shielded three-conductor cable with drain (ground) wire. The cable selected must be identical to the CCN communication bus wire used for the entire network.

  • Page 18: Comfortid™ Controls Start-Up

    HUMIDITY SENSOR WHITE BLACK Shield (If Used) +24V RH/IAQ FAN AC SECFLOW +10V 24VAC COMMUNICATION DMPPOS HEAT3 CONNECTOR TEST RED (+) ® HF23BJ042 ZONE Controller Made in Switzerland ® by Belimo Automation WHITE (GND) 35 in-lb (4 Nm) 80...110s LR 92800 Part Number: 33ZCFANTRM S/N: NEMA 2...

  • Page 19: Ccn System Start-Up

    This software is used for control calibration. It allows for var- No. 4175 with 35N units. ious functions that expedite system checks and testing. Carrier requires the use of the B&B485CARLP9A Port Pow- ered RS232 to RS485 Converter for proper operation. HEAT ACTUATOR The B&B485CARLP9A Port Powered RS232 to RS485 Con-...

  • Page 20: Comfortid Variable Air Volume Dual Duct

    SENSOR Fig. 31 — VAV Dual Duct with Demand Controlled Ventilation © Carrier Corporation 2018 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53350005-01 Printed in U.S.A.

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