Carrier CRECOMZR077A00 Installation Instructions Manual

Also see for CRECOMZR077A00: Installation instructions

Contents

21SETPOINTS(cont)ERV OAT SP 32°F (0°C)0°F to 50°F(–18°C to 10°C);increment by 1°ENERGY RECOVERY VENTILATION UNIT OUTDOOR AIRTEMPERATURE SETPOINTOnly displayed when AUX1 O = ERVEXH1 SET 50% 0 to 100% Exhaust fan set point for single speed units. Based on OA Damper positionto activate power exhaust.EXH1 L SET 65% 0 to 100%EXHAUST FAN 1 SETPOINT AT LOW SPEEDOn 2 speed or 3 speed with 1 heat and 2 cool. Based on economizer OAdamper position to activate power exhaust.EXH1 M SET 60% 0 to 100%EXHAUST POINT 1 SETPOINT AT MEDIUM SPEEDOnly displays if unit is set for 3 speed with 1 heat and 2 cool. Based oneconomizer OA damper position to activate power exhaust.EXH2 H SET 50% 0 to 100%EXHAUST FAN 1 SETPOINT AT HIGH SPEEDOn 2 speed or 3 speed with 1 heat and 2 cool. Based on economizer OAdamper position to activate power exhaust.EXH2 L SET 80% 0 to 100%EXHAUST FAN 2 SETPOINT AT LOW SPEEDOn 2 speed or 3 speed with 1 heat and 2 cool. Based on economizer OAdamper position to activate power exhaust.EXH2 M SET 77% 0 to 100%EXHAUST FAN 2 SETPOINT AT MEDIUM SPEEDOnly displays if unit is set for 3 speed with 1 heat and 2 cool. Based oneconomizer OA damper position to activate power exhaust.EXH2 H SET 75% 0 to 100%EXHAUST FAN 2 SETPOINT AT HIGH SPEEDOn 2 speed or 3 speed with 1 heat and 2 cool. Based on economizer OAdamper position to activate power exhaust.SYSTEMSETUPINSTALL 01/01/10 Display order = MM/DD/YYSetting order = DD, MM, then YY.UNITS DEG °F °F or °C Sets economizer controller in degrees Fahrenheit or CelsiusEQUIPMENT CONV Conventional orHP Always set to CONV even for heat pumpAUX2 I W W required for2-speed mode Always set to WFAN TYPE 2 speed 1 speed/2 speedSets the economizer controller to the number of unit fan speeds.Fan Type options:1 Speed units2 speed units*2 speed units: 1 for heat and 1 for cool*3 speed units: 1 for heat and 2 for cool* These Fan Type (speed) settings are for future use only. Do not use for 3 speed LC units.FAN CFM 5000cfm 100 to 15000 cfm;increment by 100UNIT DESIGN AIRFLOW (CFM)Enter ONLY if using DCVCAL ENA = AUTOAUX OUT NONENONEERVEXH2SYS• NONE = not configured (output is not used)• ERV = Energy Recovery Ventilation• EXH2 = second damper position relay closure for second exhaust fan• SYS = use output as an alarm signalOCC INPUT INPUT orALWAYS Always set to INPUTADVANCEDSETUPMA LO SET 45°F (7°C)35°F to 55°F(2°C to 12°C);incremented by 1°MIXED AIR TEMPERATURE LOW LIMITTemperature to achieve Freeze Protection (close damper and alarm iftemperature falls below setup value).FREEZE POS CLO CLO or MINFREEZE PROTECTION DAMPER POSITIONDamper position when freeze protection is activeCLO = closedMIN = MIN POS or VENTMINCO2 ZERO 0ppm 0 to 500 ppm;Increment by 10 CO 2 ppm level to match CO 2 sensor start level.CO2 SPAN 2000ppm 1000 to 3000 ppm;Increment by 10 CO 2 ppm span to match CO 2 sensor.STG3 DLY 2.0h0 min, 5 min, 15min, then 15 minintervals. Up to 4 hor OFFCOOLING STAGE 3 DELAYDelay after stage 2 for cool has been active. Turns on 2nd stage of coolingwhen economizer is 1st stage and mechanical cooling is 2nd. Allows threestages of cooling, 1 economizer and 2 mechanical.OFF = no Stage 3 coolingSD DMPR POS CLO CLO or OPNFunction NOT AVAILABLE with 2-speed modeIndicates shutdown signal from space thermostat or unitary controller. Whencontroller receives 24 vac input on the SD terminal in conventional mode, theOA damper will open if programmed for OPN and OA damper will close ifprogrammed for CLO. All other controls, e.g., fans, etc. will shut off.DCVCAL ENA MAN MAN (manual)AUTOTurns on the DCV automatic control of the dampers. Resets ventilationbased on the RA, OA, and MA sensor conditions. Requires all 3 RA, OA, andMA sensors.For single speed units only.Table 11 — Menu Structure1 (cont)MENU PARAMETERPARAMETERDEFAULTVALUEPARAMETERRANGE ANDINCREMENT 2NOTES