Carrier WeatherMaster 50HC14 Installation Instructions Manual

Also see for WeatherMaster 50HC14: Service and maintenance instructions Service and maintenance instructions Installation instructions

Contents

25Fig. 47 — Typical Rooftop Unit with Humidi-MiZer Adaptive Dehumidification System withEdge ® Pro Thermidistat DeviceEconoMi$er ® X (Factory-Installed Option)PRODUCT DESCRIPTIONThe EconoMi$er X system is an expandable economizercontrol system, which includes a W7220 economizer module(controller) with an LCD and keypad (See Fig. 48). TheW7220 can be configured with optional sensors.Fig. 48 — W7220 Economizer ModuleThe W7220 economizer module can be used as a stand-alone economizer module wired directly to a commercial set-back space thermostat and sensors to provide outside air dry-bulb economizer control.The W7220 economizer module can be connected to op-tional sensors for single or differential enthalpy control. TheW7220 economizer module provides power and communica-tions for the sensors.The W7220 economizer module automatically detects sen-sors by polling to determine which sensors are present. If asensor loses communications after it has been detected, theW7220 economizer controller indicates a device fail error onits LCD.SYSTEM COMPONENTSThe EconoMi$er X system includes an economizer mod-ule, 20k mixed air sensor, damper actuator, and either a 20koutdoor air temperature sensor or S-Bus enthalpy sensors.Economizer ModuleThe module is the core of the EconoMi$er X system. Themodule is mounted in the unit’s control box, and includes theuser interface for the system. The W7220 economizer moduleprovides the basic inputs and outputs to provide simple econ-omizer control. When used with the optional sensors, theeconomizer module provides more advanced economizerfunctionality.S-Bus Enthalpy Control SensorsThe sensor is a combination temperature and humiditysensor which is powered by and communicates on the S-Bus.Up to three sensors may be configured with the W7220 econ-omizer module.CO2 Sensor (optional)The sensor can be added for Demand Controlled Ventila-tion (DCV).SPECIFICATIONSW7220 Economizer ModuleThe module is designed for use with 2 to 10 vdc or bus com-municating actuator. The module includes terminals for CO2sensor, Mixed Air sensor, and an Outdoor Dry Bulb sensor. En-thalpy and other options are available with bus sensors.User InterfaceProvides status for normal operation, setup parameters,checkout tests, and alarm and error conditions with a 2-line16 character LCD display and four button keypad.ElectricalRated Voltage — 20 to 30 vac RMS, 50/60 HzTransformer — 100 va maximum system inputNominal Power Consumption (at 24 vac, 60 Hz) — 11.5 vawithout sensors or actuatorsRcRhW1GY2CO/W2/BY1OATRRSSRTNHUMD1D2V+VgX*CGW2W1Y2Y1REdge Programable Thermostat Unit CTBTHERMOSTAT*Connection not required.Humidi-MiZer™ FIOP