Carrier 35L Series Installation And Start-up Instructions Manual

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Carrier 35L Series Installation And Start-up Instructions Manual Manual pdf 11 page image

11*Connect jumper from T2 to R1 to override cooling minimum to zero,upon call for heating. Leave R2 connected to ground.Fig. 12 — Minimum Air from Cooling*Connect jumper from T1 to R2 to override heating minimum to zero,upon call for heating. Leave R1 connected to ground.Fig. 13 — Minimum Air From HeatingAnalog Control TroubleshootingThe following troubleshooting guide is directed towards sin-gle duct cooling applications, the same concepts can be ap-plied to other configurations.CONTROLLER1. Verify 24 vac at terminals “~” (phase) and “-” (ground).Tolerance can be –15% to +20% (20.4 to 28.8 vac).2. Verify 16 vdc at terminals “16 VDC” and “-”.a. Tolerance is 15.0 to 17.0 vdc power supply tothermostat.b. If not correct, disconnect thermostat and recheck. Ifstill incorrect, replace CSP controller.1. Check requested flow voltage on terminal “IN” and “-”.a. Use Fig. 5-7 on pages 7-8 to correlate into cubic feetper minute (cfm).b. If reading is not what is desired, see the System Cal-ibration of the Linear Averaging Flow Probe sectionto adjust thermostat.2. Check actual flow voltage on terminal “OUT” and “-”(for 0 to 10 vdc).Use Fig. 5-7 on pages 7-8 to correlate into cfm.3. Check box movement, damper rotation, etc.a. Review requested flow and actual flow parametersabove to determine if unit should be satisfied (within50 fpm) or driving open or closed.b. If damper is not moving, verify damper is not stuck orat end of travel. Check rotation jumpers for properposition.c. Change requested flow to make unit drive oppositedirection. This can be accomplished by moving theset point sliders or 1) and 2) below.1). To manually open the box, remove wiring fromterminal “IN” and jumper terminal “IN” to terminal“16VDC”. This will tell unit to control at 3300 fpm/full airflow, and the green LED should turn on (andthe box should drive open).2). To manually close the box, remove wiring fromterminal “IN”, jumper and “IN” terminal to “-” ter-minal. This will tell unit to control at zero fpm/noairflow, and the red LED should be on (and the boxshould drive closed).NOTE: When using the same transformer for more than onecontrol, the phase and ground must be consistent with eachdevice.ComfortID™ CONTROLSInstall Sensors and Make Field WiringConnectionsGENERALAll field wiring must comply with National Electrical Code(NEC) and local requirements. Refer to Tables 8-11 for elec-trical and wiring specifications.For information on how to test and balance CCN controls, re-fer to the 33ZC Installation and Operation Instructions.Wire the control as shown on the control package diagram forthe specific installation. Control wiring diagrams can befound inside the control box.SUPPLY-AIR TEMPERATURE (SAT) SENSORINSTALLATIONOn terminals with heat, the SAT sensor is provided. The sen-sor is factory-wired to the controller and shipped in the con-trol box. The SAT must be field-installed in the duct down-stream from the air terminal. The SAT sensor part number is33ZCSENSAT. See Table 8 for resistance information.To install the sensor, proceed as follows:1. Remove the plug from one of the 7/8-in. openings in thecontrol box and pass the sensor probe through the hole.2. Drill or punch a 1/ 2-in. hole in the duct downstream ofthe unit, at a location meeting the requirements shown inFig. 14.3. Using 2 self-drilling screws (supplied), secure the sensorprobe to the duct.The SAT sensor probe is 6 inches in length. The tip of theprobe must not touch the inside of the duct. Use field-sup-plied bushings as spacers when mounting the probe in a ductthat is 6-in. or less in diameter.If the unit is a cooling-only unit, the SAT sensor is not pro-vided and is not required.CAUTIONELECTRIC HAZARDFailure to follow this caution may result in damage to powersupply.Never jumper terminal 16 vdc to “-” terminal, as this wouldcause a power short and could cause damage to the powersupply.HEATING MAXT2 T1HEATING MINCOOLING MAXCOOLING MINRISE IN ROOM TEMPERATUREHTG. S.P. CLG. S.P.HEATING MAX T2 T1HEATING MINCOOLING MAXCOOLING MINRISE IN ROOM TEMPERATUREHTG. S.P. CLG. S.P.CAUTIONELECTRIC HAZARDFailure to follow this caution may result in personal injury.Disconnect all electrical power before wiring inside thecontroller. Electrical shock, personal injury, or damage to thezone controller could occur if this caution is not followed.