Carrier 50TCQD14 Installation Instructions Manual

Also see for 50TCQD: Installation instructions

Contents

32Table 11 -- Menu Structure* (cont)Menu ParameterParameterDefaultValueParameterRange and Increment[ EXPANDED PARAMETER NAMENotesSETPOINTS MAT SET 53_F(12_C)38 to 70_F;(3 to 21_C)increment by 1SUPPLY AIR SETPOINTSetpoint determines where the economizer will modulate the OA damper tomaintain the mixed air temperature.See Menu Note 2.LOW T LOCK 32_F(0_C)---45 to 80_F;( ---43 to 27_C)increment by 1COMPRESSOR LOW TEMPERATURE LOCKOUTSetpoint determines outdoor temperature when the mechanical coolingcannot be turned on. Commonly referred to as the Compressor lockout. Ator below the setpoint the Y1---O and Y2---O will not be energized on thecontroller.DRYBLB SET 63_F(17_C)48 to 80_F(9 to 27_C)increment by 1OA DRY BULB TEMPERATURE CHANGEOVER SETPOINTSetpoint determines where the economizer will assume outdoor airtemperature is good for free cooling; e.g.: at 63_F (17_C), unit willeconomize at 62_F (16.7_C) and below and not economize at 64_F(17.8_C) and above. There is a 2_F (1.1_C) deadband.See Menu Note 3ENTH CURVE ES3 ES1, ES2, ES3, ES4, orES5ENTHALPY CHANGEOVER CURVE(Requires enthalpy sensor option)Enthalpy boundary “curves” for economizing using single enthalpy.See page 40 for description of enthalpy curves.DCV SET 1100ppm 500 to 2000 ppm;increment by 100DEMAND CONTROLLED VENTILATION SETPOINTDisplays only if CO2 sensor is connected. Setpoint for Demand ControlledVentilation of space. Above the setpoint, the OA dampers will modulateopen to bring in additional OA to maintain a space ppm level below thesetpoint.MIN POS 2.8 V 2 to 10 Vdc VENTILATION MINIMUM POSITIONDisplays ONLY if a CO2 sensor is NOT connected.With 2---speed fan units MIN POS L (low speed fan) and MIN POS H (highspeed fan) settings are required. Default for MIN POS L is 3.2V and MINPOS H is 2.8V.VENTMAX 2.8 V 2 to 10 Vdc DCV MAXIMUM DAMPER POSITIONDisplays only if a CO2 sensor is connected. Used for Vbz (ventilation maxcfm) setpoint. VENTMAX is the same setting as MIN POS would be if youdid not have the CO2 sensor.100 to 9990 cfmincrement by 10If OA, MA RA and CO2 sensors are connected and DCV CAL ENABLE isset to AUTO mode, the OA dampers are controlled by CFM and displaysfrom 100 to 9990 cfm.2 to 10 Vdc With 2---speed fan units VENTMAX L (low speed fan) and VENTMAX H(high speed fan) settings are required. Default for VENTMAX L is 3.2V andVENTMAX H is 2.8V.VENTMIN 2.25 V 2 to 10 Vdc DCV MINIMUM DAMPER POSITIONDisplays only if CO2 sensor is connected. Used for Va (ventilation min cfm)setpoint. This is the ventilation requirement for less than maximumoccupancy of the space.100 to 9990 cfmincrement by 10If OA, MA RA and CO2 sensors are connected and DCV CAL ENABLE isset to AUTO mode, the OA dampers are controlled by CFM and displaysfrom 100 to 9990 cfm.2 to 10 Vdc With 2 ---speed fan units VENTMIN L (low speed fan) and VENTMIN H(high speed fan) settings are required. Default for VENTMIN L is 2.5Vand VENTMIN H is 2.25V.ERV OAT SP[[ 32_F(0_C)0 to 50_F;( ---18 to 10_C)increment by 1ENERGY RECOVERY VENTILATION UNIT OUTDOOR AIR TEMPERATURESETPOINTOnly when AUX1 O = ERVEXH1 SET 50% 0 to 100%;Increment by 1EXHAUST FAN STAGE 1 SETPOINTSetpoint for OA damper position when exhaust fan 1 is powered by theeconomizer.With 2---speed fan units Exh1 L (low speed fan) and Exh1 H (high speedfan) settings are required. Default for Exh1 L is 65% and Exh1 H is 50%EXH2 SET 75% 0 to 100%;Increment by 1EXHAUST FAN STAGE 2 SETPOINTSetpoint for OA damper position when exhaust fan 2 is powered by theeconomizer. Only used when AUX1 O is set to EHX2.With 2---speed fan units Exh2 L (low speed fan) and Exh2 H (high speedfan) settings are required. Default for Exh2 L is 80% and Exh2 H is 75%