Honeywell W7340- Manuals

Page 3 - INSTALLATION; Location and Mounting; Communicating Economizer Logic Modules; CAUTION; MOUNTING DIRECTLY TO THE MOTOR

W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES 3 63-2569—04 Table 1. Logic Module Inputs and Outputs. a 2-wire (18, 20, 22 AWG) connection. INSTALLATION When Installing this Product... 1. Read these instructions carefully. Failure to follow them could damage the product or cause a hazardous con...

Page 4 - OUTDOOR AIR SENSING; DCV Min and Min Position Damper Set Up

W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES 63-2569—04 4 Fig. 3. Mounting to a Duct or Panel. Enthalpy Sensor (W7340 only) To measure enthalpy, the logic module accepts signals from either: — C7600C Humidity and 10K NTC temperature sensors. — or a C7400 Enthalpy Sensor. IMPORTANT • When usin...

Page 6 - WIRING; Electrical Shock or Equipment Damage Hazard.

W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES 63-2569—04 6 WIRING CAUTION Electrical Shock or Equipment Damage Hazard. Can shock individuals or short equipment circuitry. Disconnect power supply before installation. IMPORTANT 1. All wiring must comply with applicable local codes, ordinances an...

Page 7 - OPERATION; SETTINGS AND ADJUSTMENT

W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES 7 63-2569—04 Fig. 7. W7345 Typical Wiring. OPERATION The purpose of the economizer logic modules are to use outdoor air for cooling, whenever possible, to reduce compressor operation. IMPORTANT • Use C7400A sensor with W7340A or W7340B. • Use C7400...

Page 8 - Demand Control Ventilation (DCV) Setpoint

W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES 63-2569—04 8 W7340 Potentiometers with screwdriver adjustment slots, located on the face of the device, provide adjustments for several parameters (See Fig. 9 for locations on device): — DCV minimum and minimum damper position. — Enthalpy changeove...

Page 9 - Limit On Minimum Damper Position; Equation 1. Formula to aid in minimum position adjustment.; Differential Enthalpy Changeover Setting; OA

W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES 9 63-2569—04 Limit On Minimum Damper Position On the W7340A and B models, the logic module as shipped from the factory, limits the minimum position setpoint to 50%. The logic module will not allow a minimum position greater than 50% open (from full...

Page 10 - Temperature

W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES 63-2569—04 10 Fig. 10. W7340 Performance Characteristics for Enthalpy Changeover Settings. Table 3. W7345 Performance Characteristics for Temperature Changeover Settings. CONTROL CURVE ABCDE CONTROL POINT APPROX. °F (°C) AT 50% RH 73 (23)70 (21)67 ...

Page 11 - TROUBLESHOOTING; Description

W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES 11 63-2569—04 TROUBLESHOOTING The status LED is visible through a hole in the device cover. A priority-based LED flash sequence indicates a detected fault. 0.25 seconds elapses between each pulse, a higher pulse count indicates higher priority. A t...

Page 12 - Automation and Control Solutions

Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9 customer.honeywell.com W7340, W7345 COMMUNICATING ECONOMIZER LOGIC MODULES ® U.S. Registered Trademark© 2007 Ho...