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Factory- - Installed Economizers
for 580J/558J/548J/581J/551J/549J/582J/559J/547J
Rooftop Units
3 to 27.5 Nominal Tons
Economizer Supplement Related To
California's new Title 24 is effective July 1, 2014 and requires several new
economizer features.
This supplement details these economizer updates and is to be used in
conjunction with the base unit installation instructions for the following
3 to 27.5 nominal ton models: 580J/558J/548J/
Supplement Index:
S EconoMi$er 2 DDC Title 24 offerings and definitions
NOTE: Wiring diagrams and instructions do not change.
S EconoMi$er X Title 24 electro- -mechanical offerings and definitions
This includes set up, start up and menu structure information.
Title 24 Note: Because the economizer factory- -installed in the unit is Title 24 listed by the
California Energy Commission (CEC), field economizer commissioning is not required.
California Title 24
581J/551J/549J/
582J/559J/547J
. . . . . . . . . . . . . . . . .
. . .
Pages 3- -22
Page 2
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Summary of Contents for Bryant 559J
- Page 1 Factory- - Installed Economizers for 580J/558J/548J/581J/551J/549J/582J/559J/547J Rooftop Units 3 to 27.5 Nominal Tons Economizer Supplement Related To California Title 24 California’s new Title 24 is effective July 1, 2014 and requires several new economizer features. This supplement details these economizer updates and is to be used in conjunction with the base unit installation instructions for the following 3 to 27.5 nominal ton models: 580J/558J/548J/...
- Page 2 California Energy Commission (CEC) listed economizer controllers to be used to properly determine when an economizer control system fails and identifying the specific failure. If your unit has the Bryant RTU Open control system, the economizer meets Title 24 section 120.2 mandatory FDD requirements.
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Page 3: Electro- -Mechanical Controls
California Energy Commission (CEC) listed economizer controllers to be used to properly determine when an economizer control system fails and identifying the specific failure. Bryant offers the EconoMi$er X control system, using the W7220 Honeywell controller, that meet the mandatory section 120.2 FDD requirements: —... - Page 4 C14243 Fig. 1 - - Example of an EconoMi$er X Wiring Diagram for a Single Speed Unit - - NOTE: For details pertaining to a specific unit, see the Wiring Diagram label on the unit.
- Page 5 C14336 Fig. 2 - - Example of an EconoMi$er X Wiring Diagram for a 2 Speed Unit - - NOTE: For details pertaining to a specific unit, see the Wiring Diagram label on the unit.
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Page 6: Safety Considerations
SAFETY CONSIDERATIONS WARNING Improper installation, adjustment, alteration, service, ELECTRICAL SHOCK HAZARD maintenance, or use can cause explosion, fire, electrical shock or other conditions which may cause personal Failure to follow this warning could cause personal injury or property damage. Consult a qualified installer, injury or death. - Page 7 W7220 ECONOMIZER MODULE System Components The EconoMi$er X system includes an Economizer module, 20k mixed air sensor, damper actuator, and either a 20k outdoor air temperature sensor or S- - Bus enthalpy sensors. Economizer Module This is the core of the EconoMi$er X System, is mounted in the unit’s control box, and includes the user interface for the system.
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Page 8: Specifications
SPECIFICATIONS Outputs Actuator signal: 2- - 10 Vdc; minimum actuator impedance W7220 Economizer Module is 2k ohm; bus two- - wire output for bus communicating The module is designed for use with 2 to 10Vdc or bus actuators. communicating actuator. The module includes terminals Exhaust fan, Y1, Y2 and AUX1 O: for CO sensor, Mixed Air sensor, and an Outdoor Dry... -
Page 9: Installation And Setup
NOTE: The W7220 will be in the ”set up” mode for the Table 1 – Economizer Module - - Left Hand Terminal Blocks first 60 minutes after powered. If a sensor for OA air or bus device (sensor, actuator) is disconnected during the set Label Type Description... -
Page 10: Co 2 Sensor Wiring
S- -Bus Sensor Wiring Table 4 – Enthalpy Control Sensor DIP Switch Settings DIP Switch Positions for Switches 1, 2, & 3 The labels on the sensors and controller are color coded for ease of installation. Orange labeled sensors can only be wired to orange terminals on the controller. -
Page 11: Menu Structure
User Interface NOTE: When values are displayed, pressing and holding the button causes the display to automatically increment. 7. Press the (Enter) button to accept the displayed value and store it in nonvolatile RAM. 8. “CHANGE STORED” displays. 9. Press the (Enter) button to return to the current menu parameter. - Page 12 Table 5 – Menu Structure Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value STATUS ECON AVAIL YES/NO ECONOMIZING AVAIALBLE YES = economizing available; the system can use outside air for free cooling when required ECONOMIZING YES/NO ECONOMIZING ACTIVE YES = Outside air being used for 1...
- Page 13 Table 5 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value STATUS EXH2 OUT ON/OFF EXHAUST STAGE 2 RELAY OUTPUT (cont) Output of AUX1 O terminal Displays ON when damper position reaches programmed percentage setpoint ON = 24 Vac Output, OFF = No Output;...
- Page 14 Table 5 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value SETPOINTS EXH2 SET 0 to 100%; EXHAUST FAN STAGE 2 SETPOINT (cont) Increment by 1 Setpoint for OA damper position when exhaust fan 2 is powered by the economizer.
- Page 15 Table 5 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value ADVANCED DA HI ALM 80_F NONE Used for alarm for when the DA air temperature is too high. Set high range SETUP (27_C) 35 to 65_F;...
- Page 16 Table 5 - - Menu Structure (cont) Parameter Parameter EXPANDED PARAMETER NAME Menu Parameter Default Range and Increment Notes Value ALARMS(#) Alarms display only when they are active. The menu title “ALARMS(#)” includes the number of active alarms in parenthesis ( ). When using S---bus sensors, ”SYLK”...
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Page 17: Sequence Of Operation
Table 6 – Damper Minimum Position Settings and Readings on Checkout Menu Demand Control Ventilation Fan Speed Setpoints Checkout (CO2 Sensor) MIN POS VMAX ---HS MIN POS H VMAX ---HS MIN POS L VMAX ---LS VENT MIN VMIN ---HS VENT MAX VMAX ---HS VENT MIN H VMIN ---HS... - Page 18 Table 9 – Enthalpy Operation No DCV (CO Sensor) - - 1 Speed Fan Demand Outside Air --- Control Ventilation Good to Y1‐I Y2-I Fan Speed Y1-O Y2-O Occupied Unoccupied (DCV) economize? High 0-v/Off 0-v/Off MIN POS Closed High 24-v/On 0-v/Off MIN POS Closed...
- Page 19 OA damper 100% before the first stage mechanical cooling is enabled. Does not apply to 582J/559J/547J 04 ---06 or 581J/551J/549J/580J/558J/548J 04 ---07 units Table 12 – Dry Bulb Operation With DCV (CO...
- Page 20 OA damper 100% before the first stage mechanical cooling is enabled. Does not apply to 582J/559J/547J 04 ---06 or 581J/551J/549J/580J/558J/548J 04 ---07 units Table 14 – Enthalpy Operation With DCV (CO...
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Page 21: Enthalpy Settings
NOTE: Two- - speed Fan operation does not apply to When the OA temperature, enthalpy and dew point are 582J/559J/547J 04- - 06 or 581J/551J/549J/580J/558J/548J below the respective setpoints, the Outdoor Air can be 04- - 07 units used for economizing. Fig. 9 shows the new single enthalpy boundaries in the W7220. -
Page 22: Initial Menu Display
Power Loss (Outage or Brownout) S The Y2 In call will be satisfied with the damper 100% open and fan on high speed and the call will turn off All setpoints and advanced settings are restored after any power loss or interruption. S If the call for additional cooling in the space has not All settings are stored in non ---volatile flash memory. -
Page 23: Troubleshooting
TROUBLESHOOTING Alarms The Economizer module provides alarm messages that display on the 2- - line LCD. NOTE: Upon power up, the module waits 60 minutes before checking for alarms. This allows time for all the configured devices (e.g. sensors, actuator) to become operational. - Page 24 Catalog No.: II---SUP---TI24---02 E2014 Bryant Heating & Cooling Systems D 7310 W. Morris St. D Indianapolis, IN 46231 Edition Date: 12/14 Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
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