Carrier 39L- Manuals

Page 3 - Make Electrical Connections —

Mount the remote control box as follows: 1. Loosen and remove the 4 nuts securing the control panel in the control box. 2. Remove the control panel from the box; set the panel and nuts aside for reassembly later. 3. Mount the control box to the Unistrut t support using field- supplied fasteners. 4. ...

Page 4 - Fig. 1 — Basic PIC Order Number

LEGEND ABX — Air BlenderAF — Airfoil CV — Constant Volume IGV — Inlet Guide Vanes FC — Forward-Curved FMB — Filter Mixing BoxMXB — Mixing BoxPIC — Product Integrated Controls VAV — Variable Air Volume *The cv capacity rating is the flow (gpm) through a valve at 1 psi pres- sure drop. Fig. 1 — Basic ...

Page 5 - Fig. 2 — PIC Option Order Number

LEGEND AF — Airfoil CV — Constant Volume DX — Direct Expansion FC — Forward-Curved FMB — Filter Mixing BoxMXB — Mixing BoxN.C. — Normally Closed N.O. — Normally OpenPIC — Product Integrated Controls VAV — Variable Air Volume *The cv capacity rating is the flow (gpm) through a valve at 1 psi pressure...

Page 8 - Fig. 5 — PIC Section Control Box Component Arrangements, 39L

ARRANGEMENT FOR SIZES 03 AND 06 ARRANGEMENT FOR SIZES 08 THROUGH 35 Fig. 5 — PIC Section Control Box Component Arrangements, 39L 8

Page 11 - Control Circuit From Dedicated Source

Fig. 8 — Fan Motor Starter Circuit and PIC Control Wiring Interface — PIC Power for Control Circuit From Dedicated Source 11

Page 12 - Table 1 — Input and Output Points

Table 1 — Input and Output Points MODULE, DEFAULT ADDRESS INPUT INPUT TYPE CHANNEL NUMBER OUTPUT OUTPUT TYPE CHANNEL NUMBER PSIO (Processor)ADDRESS 1 SAT AI 1 IGV* AO 13 OAT AI 2 MIXD AO, DO† 14 MAT AI 3 HWC AO 15 RH AI 4 CWC AO 16 LTT DI 5 SF DO 17 SPT AI 6 HIR* DO 18 RAT AI 7 — — — SP* AI 8 — — — ...

Page 37 - Table 2 — Junction Box Connections for Optional Remote Control Box

Table 2 — Junction Box Connections for Optional Remote Control Box REMOTE CONTROL BOX LOCATION CONTROL BOX TERMINAL FAN SECTION JUNCTION BOX SIGNAL JUNCTION BOX TERMINAL MPSIO 2 SAT — BLK 1 MPSIO 3 SAT — RED 2 MPSIO 8 MAT — BLK 3 MPSIO 9 MAT — RED 4 TB3 10 FLTS — BLK 5 MPSIO 28 FLTS — RED 6 TB3 10 L...

Page 38 - Typical Piping

Variable-Frequency Drives — The input signal for the inverter must be 4 to 20 mA. Use a 2-conductor20 AWG (American Wire Gage) cable (single twisted pair,unshielded) to connect the input of the inverter to the outputof the PIC control terminals. See Fig. 8. Wire the inverter so that if it is placed ...

Page 39 - Fig. 15 — Hot Water Valve Wiring

VALVE WIRING Valves MUST be connected to the correct processor mod-ule terminal to operate properly. Damage to the actuatormay occur if the valve is improperly connected. Hot Water Valves (Fig. 15) — Using a 4-conductor 20 AWGcable (two twisted pairs, no shield), connect the hot watervalve actuator ...

Page 40 - Fig. 16 — Chilled Water Valve Wiring; Fig. 17 — Duct Static Pressure Probe

Space Temperature Sensor (Fig. 18) — The space temperature sensor (SPT) is packaged and shipped inside thefan section. It is installed on a building interior wall to mea-sure room air temperature. The wall plate accommodates both the NEMA (National Electrical Manufacturers’ Association) standard and...

Page 41 - Temperature Sensor, and Supply-Air Temperature Sensor; NEMA — National Electrical Manufacturers’ Association

Table 3 — Thermistor Resistance vs. Temperature Values for Space Temperature Sensor, Return-Air Temperature Sensor, and Supply-Air Temperature Sensor RESISTANCE (Ohms) TEMP (F) RESISTANCE (Ohms) TEMP (F) RESISTANCE (Ohms) TEMP (F) RESISTANCE (Ohms) TEMP (F) RESISTANCE (Ohms) TEMP (F) 173,631.0 −30 3...

Page 42 - RESISTANCE; Mixed-Air Temperature Sensor —; Sensor Installation

Outdoor-Air Temperature Sensor (Fig. 19) — The outdoor-air temperature (OAT) sensor is shipped insidethe fan section. The OAT sensor continuously monitors thetemperature of the air outside the building. The integral shieldprevents ice formation on the sensor conductors. A field-supplied conduit junc...

Page 44 - CONTROL SETTINGS; DIAL; Fig. 24 — Enthalpy Control Settings

Supply-Air Temperature Sensor (Fig. 25) — The supply-air temperature sensor (SAT) measures the tempera-ture of the air as it leaves the supply fan. The sensor is factory-installed on the fan scroll. Return-Air Temperature Sensor (Fig. 25) — The return-air temperature sensor (RAT) is shipped inside t...

Page 45 - Fig. 28 — Duct High Humidity Switch

Heat Interlock Relay (Fig. 27) — The heat interlock relay (HIR) is factory wired and installed on VAV units only.It is a single-pole, double-throw (SPDT) relay that providesnormally-open and normally-closed contacts to interface withair terminal units. It allows the air terminals to open whenthe PIC...

Page 47 - Sensor Locations

Duct-Mounted Relative Humidity Sensor — The duct-mounted relative humidity sensor and mounting tem-plate are packaged and shipped inside the fan section. Thesensor is installed in either the return air ductwork or in theoutside air ductwork. If 2 relative humidity sensors are or-dered for differenti...

Page 48 - Airflow Switch —

Airflow Switch — The airflow switch (AFS) is a snap- acting SPDT switch that is factory installed in the PIC con-trol box. It senses the air supplied by the 39L or 39NX unitand provides the microprocessor module with a 24 vac dis-crete signal for fan status. See Fig. 35. A length of plenum tubing co...

Page 49 - Filter Status Switch —; Table 6 — CO; CO

Filter Status Switch — The filter status switch (FLTS) is factory-installed in the filter section on all PIC-equippedunits. The switch is a snap-acting SPDT switch. When dirtyfilter elements cause the pressure drop across the filter me-dia to exceed the switch setting, the switch closes and sendsan ...

Page 50 - Fig. 40 — Ventilation Rates Based on CO; Fig. 43 — Probe Manifolding

Constant Outside Air (OAC) Control — This fea- ture ensures a continuous supply of outside air to the unitand occupied space. The OAC control monitors the outsideair velocity pressure (OAVP) with a probe and pressure trans-ducer. The pressure transducer is factory-installed; the probeis factory-supp...

Page 51 - Note that the probe does not measure true velocity pres-; OAHR = Transducer high pressure; Table 7 — OAC Pressure Transducers

OAC CALIBRATION — Once the probe and tubing are in-stalled, input the set point to match the probe readings. Be-fore adjusting the OAVP probe, ensure that the supply-airfan is providing the maximum design airflow and that theoutside-air dampers are adjusted for the design outdoorairflow intake. To c...

Page 52 - Field Wiring Connections —; Table 8 — Recommended Sensor and

Field Wiring Connections — All field wiring must comply with National Electric Code (NEC) and all local re-quirements. The recommended wiring is as follows: Dampers, actuators, — 4-conductor 20 AWG cableand valves (2 twisted pairs, unshielded) Sensors — 2-conductor 20 AWG cable (one twisted pair, un...

Page 53 - Fig. 44 — Field Wiring of Sensors

For factory-supplied actuators that are field-installed, the 24 vac power source is included with the unit wired in thecontrol box. For field-supplied actuators, a 24 vac power sourcemust be field-supplied and installed for each actuator. To prevent equipment damage: Power must NOT be con-nected to ...

Page 54 - Table 9 — Recommended Actuators; Fig. 46 — Exhaust Damper Actuator Wiring (Smoke; EXD — Exhaust Air

Table 9 — Recommended Actuators PART NO. VOLTAGE(50/60 Hz) VA (24 vac) IMPEDANCE (Ohms) SIGNAL INPUT (mA) DAMPER AREA (sq ft) TORQUE (in.-lb) STROKE Parallel Opposed HF27BB006 24 18 82.5 4 to 20 8.4 10.8 15 2 in. HY27BB001* 24 60 250.0 4 to 20 42 54 50 180° HF27BB010 24 44 82.5 4 to 20 106 137 190 3...

Page 55 - Fig. 47 — Field-Supplied Mixing Box Actuator Signal Wiring

LEGEND OAD — Outside Air Damper Actuator RAD — Return Air Damper ActuatorFactory WiringField Wiring NOTE: Connections for 39NX with integral PIC shown. See wiring diagrams inFig. 9 and 12 for terminal connections in 39L control box and all remote-mountcontrol boxes. *Field-installed if only outside ...

Page 58 - NC

ANALOG DEVICE FOR ANALOG OUTPUT TEMPERA-TURE CONTROL — The analog controlled device selectedmust be capable of receiving a 4 to 20 mA signal. Its internalimpedance must not exceed 600 ohms. The power supply of the analog device must be field in- stalled. Using a 20 AWG twisted wire pair, wire the co...

Page 60 - Fig. 56 — Wiring of Two-Stage Humidification Control Relays; Fig. 57 — Wiring of the Duct

The 24 vac power source(s) to both duct mounted andwall mounted relative humidity transmitters MUST beisolated. Connecting either side to a ground will per-manently damage the sensor. The power for the relative humidity transmitters may be sourced from the valve 24 vac power source at wire no. 6and ...

Page 61 - Fig. 59 — Duct Mounted Relative Humidity; RH — Relative Humidity; Fig. 61 — Wiring of Relative Humidity Transmitters

Field Wiring Fig. 59 — Duct Mounted Relative Humidity Transmitter Wiring Fig. 60 — Wall Mounted Relative Humidity Transmitter Wiring LEGEND RH — Relative Humidity Field Wiring Fig. 61 — Wiring of Relative Humidity Transmitters 61

Page 62 - AQ; Fig. 62 — Air Quality and OAVP Sensor Wiring; IGV — Inlet Guide Vane; Fig. 63 — Field-Installed Fan Volume Control

AIR QUALITY SENSOR — Air quality (AQ) sensors areCO 2 sensors shipped inside the fan section for field instal- lation. To wire the sensors after they are mounted in the con-ditioned air space and return air duct, see Fig. 62 and theinstructions shipped with the sensors. For each sensor, usetwo 2-con...

Page 63 - Fig. 65 — Wiring of Return Fan Volume Control; Fig. 66 — Wiring of Return Fan Volume Control

LEGEND RVP — Return Velocity Pressure TransducerSVP — Supply Velocity Pressure Transducer Field Tubing NOTE: Connections for 39NX with integral PIC shown. See wiringdiagrams in Fig. 9 and 12 for terminal connections in 39L control boxand all remote-mount control boxes. Fig. 64 — Fan Volume Control —...

Page 64 - CONTROL SYSTEM; Fig. 68 — CCN Sensor Plug and Communication

Pulse-Type Meter (Fig. 67) — Monitors power usage, whichis passed through the Carrier Comfort Network (CCN) foruse by the loadshed module of the Building Supervisor. Themeter must provide a dry contact signal (not exceeding 4 Hzmaximum). Using a 2-conductor 20 AWG shielded twisted-pair conductor cab...

Page 65 - Fig. 69 — CCN Communication Wiring

All system software and operating intelligence is in the processor (PSIO master) module, which controls the unit.This module monitors and controls conditions through inputand output ports and through the option (PSIO slave) andrelay (DSIO) modules. The machine operator communicates with the PSIO mas...

Page 66 - Fig. 70 — Outdoor Air Thermostat/DSIO Wiring

LEGEND AHU — Air Handling Unit CUST — Condensing Unit StatusDSIO — Relay Module DX — Direct Expansion OAT — Outdoor Air Thermostat PIC — Product Integrated Control Factory WiringField Wiring Fig. 70 — Outdoor Air Thermostat/DSIO Wiring 66

Page 67 - The; Table 10 — Local Interface Device Key Usage; Fig. 74 — Local Interface Device

Local Interface Device (HSIO) (Fig. 74) — The HSIO consists of a keyboard with 6 function keys, 5 opera-tive keys, 10 numeric keys (0-9), and an alphanumeric8-character liquid crystal display (LCD). Key use is ex-plained in Table 10. Each function has one or more subfunc-tions as shown in Table 11. ...

Page 68 - Table 11 — Functions and Subfunctions

Table 11 — Functions and Subfunctions SUB- FUNCTION NUMBER FUNCTION Status History Schedule Service Set Point Test 1 Current alarms Alarm history Occupied modeoverride sched 1 Log on andLog off System set points Quick test ofinputs 2 Current operatingmodes Maintenancehistory Period 1of schedule 1 So...

Page 69 - Table 12 — Accessing Functions and Subfunctions; OPERATION

CONTROL OPERATION Accessing Functions and Subfunctions — See Table 12. Refer also to Table 11, which shows the 6 func-tions (identified by name) and the subfunctions (identifiedby number). Table 13 shows the sequence of all the elementsin a subfunction. Display Functions SUMMARY DISPLAY — Whenever t...

Page 70 - Table 13 — Keyboard Directory

Table 13 — Keyboard Directory STATUS Keyboard Entry Display Description ALARMS Current alarm display ALARM X 1st alarm ALARM X 2nd alarm ALARM X 3rd alarm ALARM X 4th alarm ALARM X 5th alarm ALARM X 6th alarm ALARM X 7th alarm ALARM X 8th alarm ALARM X 9th alarm ALARM X 10th alarm ALARM X 11th alarm...

Page 71 - DX — Direct Expansion

Table 13 — Keyboard Directory (cont) STATUS Keyboard Entry Display Description INPUTS System inputs SPT X Space temperature SAT X Supply air temperature RAT X Return air temperature OAT X Outside air temperature OAT X Outside air temperature forced(x = forced value) SP X Static pressure SFS X Supply...

Page 79 - Table 14 — Display Codes

Occupied Cooling (31) — Indicates that the unit is in theCooling mode to satisfy its Occupied Cooling set point.Occupied Fan Only (32) — Indicates that the unit is main-taining set point by using a mixture of outside and return aironly. No mechanical heating or cooling is being used.Nighttime Free C...

Page 81 - Example 5 — Using Quick Test; Programming Functions; Example 6 — Logging On and Logging Off

— Displays the latest service date on the local in- terface device. The last 2 service dates are displayed at theBuilding Supervisor. TEST FUNCTION — The test function operates the QuickTest diagnostic program. — Displays the status of all inputs. - - - - - - - - - - - - - - - - - - - - - - - - - - ...

Page 82 - Table 16 — Service Configuration Ranges and Defaults

Table 16 — Service Configuration Ranges and Defaults SERVICE SUBFUNCTION NUMBER CONFIGURATION VALUE RANGE FACTORY DEFAULT VALUE 3 Unit Type (0 = CV, 1 = VAV) 0/1 0 Cooling Type (0 = none, 1 = chilled water coil, 2 = DX) 0 to 2 1 DX Cooling Stages 0 to 8 2 Heating Type (0 = none, 1 = hot water/steam ...

Page 83 - Table 16 — Service Configuration Ranges and Defaults (cont)

Table 16 — Service Configuration Ranges and Defaults (cont) SERVICE SUBFUNCTION NUMBER CONFIGURATION VALUE RANGE FACTORY DEFAULT VALUE 13 Night Purge Duration (minutes) 5 to 240 15 Night Purge Low Temperature Damper Position (% output) 0 to 100 10 Night Purge High Temperature Damper Position (% outp...

Page 88 - Example 20 — Reading and Changing; key is used as the colon when; Example 21 — Setting of Time and Date

Reading and Changing Set Points — Example 20 shows howto read and change system set points. Other set points can bechanged by following the same procedure. Refer toTable 13 for the display sequence of set points in each sub-function.To adjust any parameter after enabling the func-tion, press until d...

Page 89 - Example 23 — Setting of Holidays; Fig. 75 — Schedule I Sample Time Schedule

Reading and Changing Holidays — Example 23 explains howto set holidays. Up to 18 holiday periods can be set for onecalendar year. When the calendar year changes the holidaysmust be reconfigured for the new year. Example 23 — Setting of Holidays KEYBOARD ENTRY DISPLAY RESPONSE COMMENTS HOLIDAY Holida...

Page 96 - Constant Volume Units Only

SMOKE CONTROL — When the 39L or 39NX unit isequipped with an optional smoke control and a fire systemis installed, 4 modes are provided to control smoke withinareas serviced by the air-handling unit. Each mode must beenergized individually from the approved building fire alarmsystem, and the corresp...

Page 97 - — Constant Volume; RH

LEGEND CCV — Cooling Coil ValveCV — Constant Volume DX — Direct Expansion RAT — Return-Air Temperature RH — Relative Humidity Fig. 77 — Cooling (DX and Chilled Water) Control Operation 97

Page 98 - DX; Fig. 78 — DX Submaster Gain Control Operation

LEGEND DX — Direct Expansion MAT — Mixed-Air TemperatureRAT — Return-Air TemperatureSAT — Supply-Air Temperature Fig. 78 — DX Submaster Gain Control Operation 98

Page 99 - Variable Air Volume Units Only

MIXED-AIR DAMPER CONTROL — The mixed-air dampercontrol adjusts modulating outside-air, return-air, and exhaust-air dampers. When outside air conditions are unsuitable foratmospheric cooling, the dampers are held to an adjustableminimum outside air position. When outside air conditionsare suitable fo...

Page 101 - OA

LEGEND OA — Outside Air OAC — Constant Outside Air OAVP — Outside Air Velocity PressureVAV — Variable Air Volume Fig. 79 — Constant Outside Air (OAC) Control Operation 101

Page 103 - Initial Check; Quick Test —

START-UP Initial Check IMPORTANT: Do not attempt to start unit, even mo-mentarily, until the following steps have been com-pleted. 1. Verify unit has been installed per the Installation, Start- Up, and Service Instructions shipped inside the unit. 2. Verify that all auxiliary components (valves, sen...

Page 104 - Table 18 — Test of Input Signals

Table 18 — Test of Input Signals KEYBOARD ENTRY DISPLAY RESPONSE COMMENTS/ACTION INPUTS Field testing of inputs (X = current value. All temperatures should be 6 2 degrees F from actual) SAT X Verify that the supply-air temperature sensor reading agrees with the actual temperature. OAT X Verify that ...

Page 106 - Table 19 — Test of Output Signals

Table 19 — Test of Output Signals KEYBOARD ENTRY DISPLAY RESPONSE COMMENTS/ACTION OUTPUTS Field testing of outputs. (Set HOA switch to OFF.) HCV % Press ENTR if unit is equipped with a hot water or steam valve. Otherwise press HCV TEST Verify that the hot water or steam valve strokes to its 100% pos...

Page 108 - Table 22 — Direct Expansion (DX) Cooling Test; Electronic Valve Actuator Field Test —; Table 23 — Digital DC Volt Meter vs; CONTROL LOOP CHECKOUT

Table 22 — Direct Expansion (DX) Cooling Test KEYBOARD ENTRY DISPLAY RESPONSE COMMENTS/ACTION NOTE: Only the configured number of stages are tested and appear on the display. DX COOL Entering field test DX cooling coil. (Set the HOA switch to AUTO.) DXS1 X STG1 TST The fan starts. If fan has IGVs, t...

Page 109 - Table 24 — Recommended Gain Starting Valves; VALVE TROUBLESHOOTING

To verify or adjust submaster default values, perform the following for each controlled device (control loop): 1. Verify that controlled devices (cooling coil valve [CCV], heating coil valve [HCV]) are properly piped and wired. 2. Using the local interface device, force each controlled device fully ...

Page 110 - Example 25 — Forcing An Output; Typical Linkages

To remove the actuator from the high-temperature valve linkage extension or from the 2-way normally-open valvemounting nut, proceed as follows:1. Secure the high-temperature linkage extension or 1 5 ⁄ 8 -in. valve mounting nut to prevent turning. 2. Turn the actuator base (by hand) counterclockwise ...

Page 111 - CONTROL MODULE TROUBLESHOOTING; or

TO REASSEMBLE ACTUATOR TO VALVE BODY: All 2-way normally-open valves:1. Push the valve stem completely down and close seat valve. NOTE: It may be necessary to shut down the system pumpto ensure valve stem is closed. 2. Loosen locknut and screw stem extension down fully on valve stem to adjust stem e...

Page 112 - Fig. 83 — Module Address Selector Switch

If only the PSIO slave or DSIO module indicate commu- nication failure, check the affected module for proper seat-ing. If the condition persists even though connections arecorrect, replace the module as described in the followingsection. Module Replacement (PSIO, DSIO) — The PSIO master module contr...

Page 113 - UNIT TROUBLESHOOTING

UNIT TROUBLESHOOTING PROBLEM POSSIBLE CAUSE CORRECTIVE ACTION Unit does not run PIC control is OFF Check for correct power or blown fuses (F2).Correct any deficiencies. Faulty connections Check LEDs on control module (PSIO). If LED is not solidlyilluminated, check for loose connections. If all wires...

Page 116 - METRIC CONVERSION CHART

METRIC CONVERSION CHART Copyright 1996 Carrier Corporation Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Book 3Tab 1b PC 201 Catalog No. 533-913 Printed in U.S.A. Form 39L,NX-2SI Pg 116 3-96 Replaces...