Carrier 35E Installation And Start-Up Instructions Manual
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Carrier 35E Installation And Start-Up Instructions Manual

Single-duct terminal units variable volume system
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Installation and Start-Up Instructions
CONTENTS
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1
PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 2
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
CONTROL ARRANGEMENTS . . . . . . . . . . . . . . . . . . . 3
VAV Control Arrangements . . . . . . . . . . . . . . . . . . . . 3
VVT Control Arrangement . . . . . . . . . . . . . . . . . . . . . 3
Pneumatic Control Arrangement . . . . . . . . . . . . . . . . 4
Supplied) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 1 - Install Volume Control Box . . . . . . . . . . . . 4
Step 2 - Make Duct Connections . . . . . . . . . . . . . . . 4
Digital Controls) . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CONTROL SETUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Set Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Airflow Set Points . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
PNEUMATIC CONTROLS . . . . . . . . . . . . . . . . . . . . . 11
Preparation for Balancing (Control Sequences 1102
and 1103) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
(Control Sequences 1102 and 1103) . . . . . . . . . . 12
(Control Sequences 1104-1110) . . . . . . . . . . . . . 12
Preventative Maintenance . . . . . . . . . . . . . . . . . . . . 14
Pneumatic Control Troubleshooting . . . . . . . . . . . . 14
ANALOG CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . 15
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 04-53350006-01
Printed in U.S.A.
Form No. 35E-5SI
35E Single-Duct Terminal Units
Balancing Procedures (Control Sequences 2100-
2105) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Page
Thermostat Installation . . . . . . . . . . . . . . . . . . . . . . .15
Programming Thermostat . . . . . . . . . . . . . . . . . . . . .15
Analog Control Troubleshooting . . . . . . . . . . . . . . .17
OPERATION AND SERVICE . . . . . . . . . . . . . . . . .18
Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
• PROBLEM: NO HEAT WHEN CALLED FOR
• PROBLEM: DISCHARGE TEMPERATURE NOT AT
TEMPERATURE SETTING
PERSONAL INJURY HAZARD
Air-handling equipment will provide safe and reliable service
when operated within design specifications. The equipment
should be operated and serviced only by authorized personnel
who have a thorough knowledge of system operation, safety
devices and emergency procedures.
Good judgment should be used in applying any manufacturer's
instructions to avoid injury to personnel or damage to
equipment and property.

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be
hazardous due to system pressure and electrical components. Only
trained and qualified service personnel should install, repair, or
service air-conditioning equipment.
Untrained personnel can perform basic maintenance functions 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 precautions in the
literature, tags and labels attached to the unit, and other safety
precautions that may apply.
Follow all safety codes, including ANSI (American National
Standards Institute) Z223.1. Wear safety glasses and work gloves.
Use quenching cloth for unbrazing operations. Have fire
extinguisher available for all brazing operations.
It is important to recognize safety information. This is the safety-
alert symbol
instructions or manuals, be alert to the potential for personal
injury.
Understand the signal words DANGER, WARNING, CAUTION,
and NOTE. These words are used with the safety-alert symbol.
Variable Volume System
CAUTION
. When you see this symbol on the unit and in
Pg 1
9-24
Replaces: 35E-4SI

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Summary of Contents for Carrier 35E

  • Page 1: Table Of Contents

    35E Single-Duct Terminal Units Variable Volume System Installation and Start-Up Instructions CONTENTS Balancing Procedures (Control Sequences 2100- 2105) ........15 Page Thermostat Installation .

  • Page 2: Pre-Installation

    6 ft high. Do not manhandle. Do not handle control General boxes by tubing connections or other external attachments. Table 1 shows component weights. The 35E unit is a single duct, variable volume terminal available with factory-installed pneumatic, analog electronic, Carrier INITIAL INSPECTION Comfort Network ®...

  • Page 3: Control Arrangements

    VAV Electronic Controls) CONTROL ARRANGEMENTS • 35EV (CCN Variable Volume and Temperature [VVT] The 35E single-duct unit is offered with a wide variety of factory- Electronic Control) mounted controls that regulate the volume of air delivery from the • 35EW (TruVu BACnet VVT Electronic Controls) ®...

  • Page 4: Analog Electronic Control Arrangement

    2103: Cooling with on/off hot water heat control NO CONTROL 2104: Cooling/heating automatic changeover control D001: 35E box with control box and 24-v transformer. Also used for control enclosure and electric heat. 2105: Cooling with proportional hot water heat control...
  • Page 5 Table 2 — 35E Basic Pressure Data a,b,c,d MINIMUM AIRFLOW MINIMUM INLET STATIC PRESSURE INLET (cfm) (unit and heat pressure drop) SIZE MAXIMUM ELECTRIC HEAT (in.) AIRFLOW MAX kW vs. CFM Cooling Only Velocity Basic Basic + 1- Basic + 2-...

  • Page 6: Step 3 - Install Sensors And Make Field Wiring

    Enclosure LEGEND — Airflow Switch DDC — Direct Digital Controls NOTE: Drawing is typical of 480-v, 3-phase, 4-wire heater and control. Refer to actual unit wiring diagram. Fig. 6 — Typical Power Connections for 35E Units with 3-Stage Electric Heat...
  • Page 7 Table 3 — 35E Heater Power Wiring and Fuse Sizing (Single Phase, 60 Hz) 120-v 208-v 240-v 277-v HEATER BTUH Heater Heater Heater Heater SIZE (kW) 1,707 3,413 6,826 16.7 10,239 25.0 14.4 12.5 10.8 13,652 33.3 19.2 16.7 14.4 17,085 41.7...
  • Page 8 10,000 7000 3665 2806 2100 2062 1432 1160 1000 0.05 0.03 0.01 Pressure Differential (wg) Analog Controls Thermostat Setting LEGEND Δ CFM — K CFM — ft /minute K — Sensor Constant Δ P — Pressure Differential (wg) Fig. 7 — Inlet Flow Sensor, CFM vs Pressure Signal (Linear Averaging Probe Chart)

  • Page 9: Control Setup

    1.0 in. wg differential pressure, by the standard pitot tube coefficient of 4005. This ratio is the Each 35E unit is equipped with a flow probe that measures a dif- same for all sizes regardless of which probe is used.
  • Page 10 AIR TERMINAL PERFORMANCE SHEET JOB NAME ______________________________________________ JOB LOCATION __________________________________________ CUSTOMER _____________________________________________ ENGINEER ______________________________________________ BUILDING LOCATION/FLOOR ______________________________ BUS NUMBER ___________________________________________ CONTROL SET POINTS Cooling Heating Calibration Zone Heat Occupied Unoccupied Reheat (cfm) (cfm) Gain Address Size Number Number (in./cfm) Type Mult.

  • Page 11: Pneumatic Controls

    PNEUMATIC CONTROLS Preparation for Balancing (Control Sequences 1102 and 1103) Inspect all pneumatic connections to assure tight fit and proper location. Verify that the thermostat being used is compatible with the control sequence provided (direct acting or reverse acting). CS C- 20 03 Check main air pressure at the controller(s).

  • Page 12: Balancing Procedure (Control Sequences 1102 And 1103)

    Table 6 — Pneumatic Volume Controller Identification FUNCTION CONTROL KREUTER ARRANGEMENT FIG. NO. SEQUENCE PART NO. IDENTIFICATION 1102 DA-NO CSC-2003 1103 RA-NC CSC-2004 1104 DA-NO CSC-3011 1105 DA-NC CSC-3011 1106 RA-NO CSC-3011 1107 RA-NC CSC-3011 1108 DUAL MAX CSC-3011 1109 HTG/CLG MAX (2) CSC-3011 1110...
  • Page 13 To Thermostat Branch Signal (reset signal) Reset Start Point Adjustment (factory set at 8 psi) To Static Pressure To Total Pressure (difference is: differential pressure, Differential Pressure (flow) limit or device velocity pressure) adjustment when T' STAT Push on Nipples for Pressure is High (HI STAT) 3/16"...

  • Page 14: Preventative Maintenance

    DA COOLING DA HEATING Reset Reset Span Span LO STAT Δ LO STAT Δ HI STAT Δ HI STAT Δ 13 psig 13 psig Δ Δ Reset Start Reset Start ROOM TEMPERATURE ROOM TEMPERATURE RA HEATING RA COOLING Reset Reset Span Span HI STAT...

  • Page 15: Analog Controls

    Table 7 — Troubleshooting a,b,c,d,e,f,g PROBLEM PROBABLE CAUSE Controller does not reset to maximum or minimum set point during Balancer is using the thermostat for control signal. An artificial signal must balance procedure. be provided in place of the thermostat. Controller does not reset to maximum or minimum set point during Thermostat is not demanding maximum or minimum air volume.
  • Page 16 Fig. 14 — KMC CSP-4702...

  • Page 17: Analog Control Troubleshooting

    NO PRESSURE OUTPUT SIGNAL FROM  Analog Control Troubleshooting INLET SENSOR The following troubleshooting procedure is directed towards sin- gle duct cooling applications. The same concepts can be applied to Check the wiring. other configurations. Check air flow and sensor. Tubing should be free of kinks NOTE: For about 15 seconds after power is applied, no rotation and restrictions.

  • Page 18: Proportional (Ssr) Electric Heat Start-Up, Operation And Service

    Table 8 — Thermostat Settings for the CFM per Inlet Size AO1 and SENSOR CFM PER INLET SIZE SIGNAL SETTING (in. wg) 0.00 0.03 1107 0.05 1565 0.08 1004 1917 0.10 1159 2214 0.13 1296 2475 0.15 1087 1420 2711 0.18 1174 1533...

  • Page 19: Start-Up

    Start-Up INPUT SETTING WARNING The Proportional SSR Heat board can be controlled and operated Units with Proportional SSR Heat use solid state relays, in 7 different ways. The units are ordered with an LXY code, which generate heat when used. The temperature of the where X is coded for unit power and Y is coded for the application control box and/or heat sinks may be hot to the touch, caus- (1-7).

  • Page 20: Wiring

    WIRING There are three terminations for 24 vac control (Fig. 15, item 5) of the electric heat (applications LX1, LX2, LX5, LX6, and LX7). See Fig. 15. The EHM control board is powered by 24 vac “Inc” is for the increase signal in applications LX5 and LX7, as (Fig.
  • Page 21 YELLOW #18 OPTIONAL CONTROLS DISCHARGE BLUE #18 POWER TEMP 2 STAGE SENSOR HEATER WHITE #18 APPLICATION 2ND STAGE BLACK #18 COMMON RED #18 1ST STAGE 49°C 120°F Tcal 32°C 90°F 20°C EVO/EHM- 68°F 0-10V 2-10V 24Vac Neutral Relay Float 2Stg Xfmr Incr SSRs...
  • Page 22 YELLOW #18 24VAC INPUT BLUE #18 2-10 Vdc (4-20mA) BLACK #18 ANALOG OUT POS HEATER RED #18 ANALOG OUT NEG APPLICATION OPTIONAL DISCHARGE TEMP 49°C SENSOR 120°F Tcal 32°C 90°F 20°C EVO/EHM- 68°F 0-10V 2-10V 24Vac Neutral Relay Float 2Stg Xfmr Incr SSRs...
  • Page 23 YELLOW #18 OPTIONAL CONTROLS DISCHARGE BLUE #18 BINARY 3 STAGE POWER TEMP SENSOR (Bin) HEATER WHITE #18 2ND STAGE APPLICATION BLACK #18 COMMON RED #18 1ST STAGE 49°C 120°F Tcal 32°C 90°F 20°C EVO/EHM- 68°F 0-10V 2-10V 24Vac Neutral Relay Float 2Stg Xfmr...
  • Page 24 49°C 120°F Tcal 32°C 90°F TERMINAL 20°C 68°F EVO/EHM- UNIT 0-10V 2-10V 24Vac Neutral Relay Float CONTROLLER 2Stg Xfmr Incr SSRs Select Sequence> On/Off 24Vac Neutral Relay NOTE: Drawing shows wiring for controls with no common output that internally switches 24VAC+ to the outputs. For controls that internally switch 24VAC COM, move jumper on EHM control board from NEUTRAL to 24VAC.
  • Page 25 DISCHARGE TEMPERATURE SETPOINT EHM. The connection at this termination is not polar sensitive and the two wires may be switched with no effect. Proportional SSR Heat comes with a discharge temperature set- point (DTS) option. This option allows a maximum temperature to The desired discharge temperature is set by rotating the discharge be set at the board to prevent overheating of discharge air.

  • Page 26: Troubleshooting Proportional Ssr Heat

    “4–” VDC terminal of the relay. If two relays are used in the Troubleshooting Proportional SSR Heat heater, the relays are daisy-chained from “4–” to “+3” PROBLEM: NO HEAT WHEN CALLED FOR together. See Fig. 23 for one example. Confirm the jumper setting is correct for the input given. PROBLEM: DISCHARGE TEMPERATURE NOT AT TEM- a.
  • Page 28 © 2024 Carrier Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53350006-01 Printed in U.S.A. Form No. 35E-5SI Pg 28 9-24 Replaces: 35E-4SI...

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