Economi$Er; Factory-Installed Option) - Carrier WeatherMaster 50HC14 Installation Instructions Manual

Edge Programable Thermostat
Fig. 47 — Typical Rooftop Unit with Humidi-MiZer Adaptive Dehumidification System with

EconoMi$er

® X (Factory-Installed Option)
PRODUCT DESCRIPTION
The EconoMi$er X system is an expandable economizer
control system, which includes a W7220 economizer module
(controller) with an LCD and keypad (See Fig. 48). The
W7220 can be configured with optional sensors.
Fig. 48 — W7220 Economizer Module
The W7220 economizer module can be used as a stand-
alone economizer module wired directly to a commercial set-
back space thermostat and sensors to provide outside air dry-
bulb economizer control.
The W7220 economizer module can be connected to op-
tional sensors for single or differential enthalpy control. The
W7220 economizer module provides power and communica-
tions for the sensors.
The W7220 economizer module automatically detects sen-
sors by polling to determine which sensors are present. If a
sensor loses communications after it has been detected, the
W7220 economizer controller indicates a device fail error on
its LCD.
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®
Edge Pro Thermidistat Device
THERMOSTAT
Humidi-MiZer™ FIOP
*Connection not required.
SYSTEM COMPONENTS
The EconoMi$er X system includes an economizer mod-
ule, 20k mixed air sensor, damper actuator, and either a 20k
outdoor air temperature sensor or S-Bus enthalpy sensors.
Economizer Module
The module is the core of the EconoMi$er X system. The
module is mounted in the unit's control box, and includes the
user interface for the system. The W7220 economizer module
provides the basic inputs and outputs to provide simple econ-
omizer control. When used with the optional sensors, the
economizer module provides more advanced economizer
functionality.
S-Bus Enthalpy Control Sensors
The sensor is a combination temperature and humidity
sensor which is powered by and communicates on the S-Bus.
Up to three sensors may be configured with the W7220 econ-
omizer module.
CO Sensor (optional)
2
The sensor can be added for Demand Controlled Ventila-
tion (DCV).
SPECIFICATIONS
W7220 Economizer Module
The module is designed for use with 2 to 10 vdc or bus com-
municating actuator. The module includes terminals for CO
sensor, Mixed Air sensor, and an Outdoor Dry Bulb sensor. En-
thalpy and other options are available with bus sensors.
User Interface
Provides status for normal operation, setup parameters,
checkout tests, and alarm and error conditions with a 2-line
16 character LCD display and four button keypad.
Electrical
Rated Voltage — 20 to 30 vac RMS, 50/60 Hz
Transformer — 100 va maximum system input
Nominal Power Consumption (at 24 vac, 60 Hz) — 11.5 va
without sensors or actuators
25
Unit CTB
X*
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