Honeywell JADE™ Economizer Module (MODEL W7220)

Product Description

The JADE™ Economizer System is an expandable economizer control system, featuring the W7220 Economizer Module (controller) with an LCD and keypad. The W7220 can be configured with optional sensors for enhanced functionality.

The W7220 Economizer Module can operate as a standalone unit, wired directly to a commercial set-back space thermostat and sensors to provide Outdoor Air dry-bulb economizer control. It can also connect to optional Sylk Bus sensors for single or differential enthalpy control, providing power and communication over the Sylk Bus.

The W7220 automatically detects connected sensors. If a sensor loses communication after detection, the module will indicate a device fail error on its LCD.

System Components

The JADE™ Economizer System includes:

• An Economizer Module (W7220)
• 20k mixed air sensor
• Damper actuator
• Optional CO2 sensor
• Optional 20k outdoor air temperature sensor or Sylk Bus sensors for measuring Outdoor Air and return air enthalpy, temperature, and humidity.

Economizer Module

This is the core of the JADE™ Economizer System, providing the user interface and essential inputs/outputs for simple economizer control. With optional Sylk Bus sensors, it offers more advanced functionality.

Sylk Bus Sensors (optional)

Sylk Bus Sensors are combination temperature and humidity sensors powered and communicated with via the Sylk Bus. Up to three Sylk Bus sensors can be configured with the JADE™ Economizer Module.

CO2 Sensor (optional)

A CO2 sensor can be added for Demand Control Ventilation (DCV). Options include an analog (2-10 Vdc) sensor or a wall-mount Sylk bus TR40 CO2 sensor.

Contents

• Product Description
• Specifications
• Before Installation
• Installation and Setup
• Mounting
• Wiring
• Wiring Application Examples
• Interface Overview
• Setup and Configuration
• Checkout
• Troubleshooting

PC MOD Tool (optional)

The PC MOD tool connects to a personal computer and communicates with the Jade economizer controller via the Sylk bus. The W7220 PCMOD tool software is available for free download from the Accessories section. Some controller features can only be enabled or disabled using this tool.

Specifications

W7220A Economizer Module

Designed for use with Honeywell 2 to 10 Vdc or Honeywell Sylkbus communicating actuators. Includes terminals for CO2 sensor, Mixed Air sensor, and Outdoor Dry Bulb sensor. Enthalpy and other options are available with Sylk Bus sensors.

User Interface: Provides status for normal operation, setup parameters, checkout tests, and alarms/error conditions via a 2-line, 16-character LCD display and a 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)
• Relay Digital Output Rating (at 30 Vac, Class 2 input only): 1.5A run; 3.5A inrush @ 0.45PF (200,000 cycles) or 7.5A inrush @ 0.45PF (100,000 cycles)
• External Sensors Power Output: 21 Vdc +/- 5% @ 48mA

IMPORTANT: All inputs and outputs must be Class 2 wiring.

Inputs

SENSORS:

• A Mixed Air (MA) analog sensor is required for all W7220 units.
• An Outdoor Air (OA) sensor (for dry bulb changeover) or an OA Sylkbus sensor (for outdoor enthalpy changeover) is required in addition to the MA sensor.
• An optional Return Air (RA) Sylkbus sensor can be added for differential enthalpy or dry bulb changeover. For differential dry bulb changeover, a 20k ohm sensor is required for OA and a Sylkbus sensor for RA. The RA Sylkbus sensor's DIP switch must be set to the RA position.

Outputs

• Actuator signal: 2-10 Vdc; minimum actuator impedance is 2k ohm; Sylkbus two-wire output for Honeywell Sylkbus communicating actuators.
• Exhaust fan, Y1, Y2 and AUX1 O: All Relay Outputs (at 30 Vac) with 1.5A maximum running current and 7.5A maximum inrush current.

Environmental

• Operating Temperature: -40 to 150 °F (-40 to 65 °C). Display operation is down to -4 °F with full recovery at -4 °F from exposure to -40 °F.
• Storage Temperature: -40 to 150 °F (-40 to 65 °C)
• Shipping Temperature: -40 to 150 °F (-40 to 65 °C)
• Relative Humidity: 5% to 95% RH non-condensing

Ordering Information

For replacement and modernization products, refer to the TRADELINE® Catalog or price sheets for complete ordering numbers. For additional questions or comments, contact:

1. Your local Honeywell Environmental and Combustion Controls Sales Office.
2. Honeywell Customer Care, 1985 Douglas Drive North, Minneapolis, Minnesota 55422-4386.
3. Visit customer.honeywell.com or customer.honeywell.ca.

International Sales and Service Offices are located in principal cities worldwide. Manufacturing occurs in Belgium, Canada, China, Czech Republic, Germany, Hungary, Italy, Mexico, Netherlands, United Kingdom, and United States.

Dimensions

Height: 4.98 inches (126.4 mm)

Width: 6.3 inches (160 mm)

Depth: 1.34 inches (34 mm)

Weight: 0.58 lb. (0.265 kg)

Approvals: UL listed (XAPX) for USA and Canada; California Energy Commission (CEC) FDD ID number HJW10.

Diagram Description (Fig. 1): Shows the physical dimensions of the W7220 module with mounting hole locations. Dimensions are provided in inches and millimeters.

Installation and Setup

The installation procedures should be followed in this order:

1. Mounting (see page 3).
2. Wiring (see page 4).
3. Interface and Programming overview (see page 18).
4. Setup and Configuration (see page 18).
5. Checkout (see page 31).
6. Troubleshooting and Alarms (see page 32).

NOTE: During the first 60 minutes after power-up, the Jade module is in "set up" mode. If sensors or actuators are disconnected during this period, the module will not alarm. However, the Mixed Air (MA) sensor is critical; if it is removed during setup, the module will alarm. After 60 minutes, the module enters operation mode, and any previously disconnected components will trigger alarms.

Mounting

This section covers mounting procedures for the JADE™ Economizer module and its sensors.

Economizer Module Location and Mounting

IMPORTANT: Avoid mounting in areas with acid fumes, deteriorating vapors, or escaping gas or explosive vapors.

IMPORTANT: Mount the module in a position that allows clearance for wiring, servicing, and removal. Mount on any convenient interior location using two mounting holes (#6 or #8 screws, not provided). Refer to Fig. 1 for dimensions. Mounting orientation shown in Fig. 1 is recommended for optimal LCD visibility and keypad use.

Sensor Location and Mounting

The JADE™ Economizer W7220 uses digital and communicating sensors. The C7250 temperature sensors (MA and OA) are 20k NTC. A MA sensor is required for all applications and is mounted in the mixed air section of a rooftop unit, either directly to the sheet metal or using a duct mounting kit (part number 50053060-001).

Optional OA, RA, and DA Sylkbus sensors communicate via a two-wire bus and can be wired using a two-pin header or a side connector. The Sylkbus sensor SKU is C7400S. All OA, RA, and DA sensors use the same SKU. The sensor type is set using a three-position DIP switch (OA: OFF, OFF, OFF; RA: ON, OFF, OFF; DA: OFF, ON, OFF). Refer to "Sylk Bus Sensor Wiring" on page 7 for DIP switch details.

NOTE: The protective film on DIP switches is for factory assembly; push through it to set switches.

Sensor application can be changed by altering the DIP switch setting.

Sensors can be mounted directly on sheet metal or in the airstream using the duct mounting kit. The kit includes a rod, flange, and gasket. The rod has slots for wire management and adjusts for 6 to 12 inch duct lengths. The flange provides extended relief for mounting.

Diagram Description (Fig. 2): Shows the components of the Duct Mounting Kit: rod, gasket, and flange.

Diagram Description (Fig. 3): Illustrates duct mounting adjustments, showing the wire holder and adjustable length rod (6-12 inches).

Wiring

All wiring must comply with applicable electrical codes and ordinances, or as specified in installation wiring diagrams. Field wiring connects to terminal blocks on the left and right sides of the module. OEM factory wiring connects via header pin terminals. Terminal pins and blocks share common terminations.

WARNING: Electrical Shock Hazard. Disconnect power before wiring to prevent severe injury, death, or property damage.

CAUTION: Equipment Damage Hazard. Electrostatic discharge can damage circuitry. Ensure proper grounding before handling.

Diagram Description (Fig. 4): Illustrates the typical location of Outdoor Air, Return Air, Mixed Air, and Discharge Air sensors within an economizer system, showing connections to the W7220 module, a thermostat, and a damper actuator. It notes that for differential enthalpy, two C7400S sensors are used in Return Air and Outdoor Air for greater energy savings.

Economizer Module Wiring Method

Wire sensors and outputs, then the power connection. Each terminal accommodates:

• Single wire: 18 to 22 AWG solid or stranded.
• Multiple wires: Up to two 22 AWG stranded.
• 24 Vac connections: Single wire, 14 to 18 AWG solid or stranded.
• S-BUS wiring: Sensors can be up to 200 ft (61 m) from the controller. Use twisted pair shielded wire for lengths over 100 ft.
• Sensor wiring to Sylk bus and analog sensors is polarity insensitive.

Wiring Preparation for Terminal Blocks:

1. Remove plastic tabs from the controller side where connectors will slide.
2. Strip 1/2 in. (13 mm) insulation from the conductor.
3. For a single wire, cut to 3/16 in. (5 mm), insert into the terminal, and tighten the screw.
4. For multiple wires in one terminal, twist them together (minimum three turns) before inserting for proper contact (see Fig. 5).
5. Cut the twisted end to 3/16 in. (5 mm) before inserting and tightening.
6. Pull each wire to ensure a good mechanical connection.

Diagram Description (Fig. 5): Illustrates the process of preparing wires for terminal blocks: stripping insulation, twisting multiple wires, and cutting the twisted end.

Diagram Description (Fig. 6): Shows the terminal connection labels for the W7220 Economizer module, identifying left and right terminal blocks with specific terminal names (MAT, OAT, S-BUS, IAQ, ACT, AUX2-I, OCC, E-GND, EXH1, AUX1-O, Y2-I, Y2-O, Y1-I, Y1-O, C, R).

Table 1: Economizer Module - Left hand terminal blocks. Lists MAT, OAT, S-BUS terminals and their types and descriptions.

Table 2: Economizer Module - Right hand terminal blocks. Lists AUX2 I, OCC, E-GND, EXH1, AUX1 O, Y2-I, Y2-O, Y1-I, Y1-O, C, R terminals and their types and descriptions.

Sylk Bus Sensor Wiring

Sensors and controller terminals are color-coded for easy installation. Orange sensors connect to orange terminals; brown sensors connect to S-bus (brown) terminals. Use Fig. 7 and Table 3 to locate Sylk Bus sensor terminals.

Use Fig. 7 and Table 4 to set DIP switches for desired sensor usage.

Diagram Description (Fig. 7): Shows the Sylk Bus sensor DIP switches and terminal connections, including the Sylk Bus terminals (1 and 2) and the 2-pin side connector.

Table 3: SYLK Bus Sensor Wiring Terminations. Details the S-BUS SYLK Bus terminals and their communication description.

Table 4: SYLK Bus Sensor DIP Switch Settings. Provides DIP switch positions for Switches 1, 2, & 3 for DA, RA, and OA sensor configurations.

NOTE: Sylkbus sensors have a slight communication delay. Analog sensors output a 20k ohm signal, resulting in instantaneous response.

NOTE: The C7400S Sylk bus enthalpy sensor allows testing economizer operation when outdoor conditions are unfavorable for economizing.

Actuator Wiring Options

The JADE economizer controller supports one communicating actuator. It can also accommodate up to four non-communicating actuators and two 2-position actuators (on EXH1 and AUX1 O). Alternatively, one communicating actuator can be used with up to four non-communicating and two 2-position actuators. For 2-position actuators on AUX1 O, program AUX1 O for Exh2; the % open reflects the outdoor damper position. Connect 24V to Exh1 and/or AUX1 O and ground to the Jade "C" terminal.

CO2 Sensor Wiring

For C7232 Honeywell CO2 sensors, the black and brown common wires are internally connected and only one connects to "IAQ COM". Power the CO2 sensor from the Jade or ensure common grounds for power supplies. Refer to wiring diagrams for C7232 and C7632.

NOTE: For C7632 (or any 0-10 Vdc CO2 sensor), set CO2ZERO to 400 ppm and CO2SPAN to 1600 ppm in ADVANCED SETUP.

NOTE: For TR40 CO2 sensor, set address to 6 (CO2) or 11 (actuator). Only one TR40 CO2 sensor is supported.

Diagram Description (Fig. 8): Shows wiring for the C7232 CO2 sensor, illustrating connections for 24V, analog out, and common wires.

Diagram Description (Fig. 9): Shows wiring for the C7632 CO2 sensor, illustrating connections for 0-10 Vdc power supply.

Wiring Application Examples

This section illustrates various wiring configurations for the JADE™ Economizer system.

Stand-alone Economizer

The most basic configuration is a stand-alone economizer, directly wired to sensors, actuators, thermostat, and mechanical cooling controls in the rooftop unit, without requiring Sylk Bus communications.

Diagram Description (Fig. 10): Depicts a stand-alone dry bulb economizer configuration using a Honeywell M7215 black motor actuator. It shows connections between the W7220 module, MA TEMP SENSOR, OA TEMP SENSOR, CO2 SENSOR (optional), thermostat, and actuator. Notes regarding sensor placement and thermostat terminal differences for heat pumps are included.

Diagram Description (Fig. 11): Illustrates a 2-position actuator connection for EXH1 or AUX1 O terminals, explaining its function and programming.

Diagram Description (Fig. 12): Shows a configuration with a Prestige IAQ thermostat and EIM, including a communicating actuator, CO2 sensor, and VFD. It details connections to the W7220 controller and EIM, and notes the transformer requirement.

Diagram Description (Fig. 13): Illustrates a Jade system with a Prestige IAQ thermostat, communicating actuator, CO2, and VFD, detailing connections to the W7220 and a BASIC I/O BOARD. It includes notes on relay functions and thermostat terminal differences.

Diagram Description (Fig. 14): Similar to Fig. 12, showing a Jade with Prestige IAQ thermostat and EIM, communicating actuator, CO2 and VFD configuration.

Diagram Description (Fig. 15): Shows a stand-alone dry-bulb economizer configuration with Honeywell MS7503 or MS7505 Direct Coupled Actuator, detailing connections to the W7220 module, sensors, thermostat, and actuator. Includes notes on sensor placement and heat pump thermostat compatibility.

Diagram Description (Fig. 16): Depicts a stand-alone dry-bulb economizer configuration with Honeywell MS3103J or MS3105J communicating actuators, showing connections to the W7220 module, sensors, thermostat, and actuators. Includes notes on sensor placement and heat pump thermostat compatibility.

Economizer with Sylk Bus Sensors

Using Sylk Bus sensors reduces wiring and enhances functionality. Configurations include enthalpy control.

Diagram Description (Fig. 17): Illustrates an economizer with Sylk Bus sensors for enthalpy configuration using a Honeywell M7215 black motor. It shows connections between the W7220 module, MA TEMP SENSOR, OA TEMP/HUMIDITY (ENTHALPY) SYLKBUS SENSOR, RETURN AIR TEMP/HUMIDITY (ENTHALPY) SYLKBUS SENSOR, thermostat, and actuator. Notes mention optional discharge air sensors and heat pump compatibility.

Diagram Description (Fig. 18): Shows an economizer with Sylk Bus sensors for enthalpy configuration using a Honeywell MS7503 or MS7505 Direct Coupled Actuator. It details connections to the W7220 module, sensors, and thermostat.

Diagram Description (Fig. 19): Depicts an economizer with Sylk Bus sensors for enthalpy configuration using a Honeywell MS3103J or MS3105J communicating actuators, showing connections to the W7220 module, sensors, and thermostat. Notes on daisy-chaining Sylk Bus components and heat pump compatibility are included.

Diagram Description (Fig. 20): Provides OEM wiring harness information, listing part numbers, manufacturer, pin counts, and connector types for various JADE controller terminal blocks, including a note about M7215 actuator compatibility.

Interface Overview

This section details the use of the Economizer's user interface, including keypad and menu navigation, settings, and parameter changes.

User Interface

The interface consists of an LCD display and a 4-button keypad. The LCD is a 16-character by 2-line dot matrix display.

Diagram Description (Fig. 21): Shows the W7220 Economizer LCD and Keypad Layout, identifying the 2-line LCD and the four navigation buttons: MENU UP (EXIT), SCROLL (UP/DOWN), and SELECT (ENTER).

Keypad

The four navigation buttons are used to scroll through menus, select items, and change parameters.

Using the Keypad with Menus:

• Use the ◀ button to move to the previous menu.
• Use the ▶ button to move to the next menu.
• Press the Enter (▶) button to display the first item in the current menu.
• Press the Menu Up/Exit (◀) button to exit a menu item and return to the list of menus.

Using the Keypad with Settings and Parameters:

• Navigate to the desired menu.
• Press Enter (▶) to display the first item.
• Use the ▲ and ▼ buttons to scroll to the desired parameter.
• Press Enter (▶) to display the value of the current item.
• Use the ▲ button to increase the parameter value.
• Use the ▼ button to decrease the parameter value.
• Press Enter (▶) to accept the value and store it.
• The display will show "STORED".
• Press Menu Up/Exit (◀) to return to the previous menu.

NOTE: Holding ▲ or ▼ buttons while values are displayed will cause automatic increment/decrement.

Menu Structure

Table 5 outlines the menu hierarchy. The menus appear in this order: STATUS, SETPOINTS, SYSTEM SETUP, ADVANCED SETUP, CHECKOUT, ALARMS. The available parameters may vary based on configuration (e.g., presence of a CO2 sensor).

Setup and Configuration

The JADE™ Economizer module must be set up and configured before service. During setup, the module is live. The process uses a hierarchical menu structure navigable with the arrow buttons.

Time-out and Screensaver

If no buttons are pressed for 10 minutes, the LCD displays a screensaver cycling through Status items, with each item displayed for 5 seconds.

Menu Structure Details

Table 5: Menu Structure. This comprehensive table details menus, parameters, default values, ranges, increments, and notes for various functions like STATUS (ECON AVAIL, OCCUPIED, HEAT PUMP, etc.), SETPOINTS (MAT SET, LOW T LOCK, DRYBLB SET, etc.), SYSTEM SETUP (INSTALL, UNITS DEG, EQUIPMENT, AUX2 IN, FAN SPEED, etc.), ADVANCED SETUP (MA LO SET, FREEZE POS, CO2 ZERO, etc.), CHECKOUT (DAMPER MINIMUM POSITION, DAMPER OPEN, etc.), and ALARMS.

Table 6: Damper minimum position settings and readings on checkout menu. Lists settings for Demand Control Ventilation based on Fan Speed and CO2 sensor presence.

Table 7: Dry Bulb Operation No DCV (CO2 sensor) - 1 Speed Fan. Details operational sequences based on OA conditions, DCV status, Y1-I, Y2-I, FAN SPD, Y1-O, Y2-O, and Occupied/Unoccupied states.

Table 8: Dry Bulb Operation With DCV (CO2 sensor) - 1 Speed Fan. Details operational sequences with DCV enabled.

Table 9: Enthalpy Operation No DCV (CO2 sensor) - 1 Speed Fan. Details operational sequences using enthalpy control without DCV.

Table 10: Enthalpy Operation With DCV (CO2 sensor) - 1 Speed Fan. Details operational sequences using enthalpy control with DCV.

Table 11: Dry Bulb Operation No DCV (CO2 sensor) - 2 Speed Fan. Details operation for 2-speed fans without DCV.

Table 12: Dry Bulb Operation With DCV (CO2 sensor) - 2 Speed Fan. Details operation for 2-speed fans with DCV.

Table 13: Enthalpy Operation No DCV (CO2 sensor) - 2 Speed Fan. Details enthalpy operation for 2-speed fans without DCV.

Table 14: Enthalpy Operation With DCV (CO2 sensor) - 2 Speed Fan. Details enthalpy operation for 2-speed fans with DCV.

Enthalpy Settings

The W7220 uses OA temperature, enthalpy, and dew point to determine economizing availability. It references single enthalpy boundaries (ES1-ES5) and a dual enthalpy high limit. The system calculates enthalpy and dew point using OA temperature and humidity from the OA sensor. When OA conditions are below the selected boundary, economizing is available (YES). Above the boundary, it is not (NO).

Diagram Description (Fig. 22): Illustrates single enthalpy curves and boundaries, showing how economizing availability changes based on temperature and enthalpy relative to defined curves (ES1-ES5, HL).

Table 15: Single Enthalpy and Dual Enthalpy High Limit Curves. Provides specific temperature, dew point, enthalpy, and humidity values for the ES1 through ES5 and HL boundaries.