Honeywell w7459a ユーザーズマニュアル

SOLID STATE ECONOMIZER SYSTEM

63-2484—2

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the

TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or

phone:

1. Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).

2. Honeywell Customer Care

1885 Douglas Drive North

Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.

International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,

Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

M7415 and M8405 Damper Actuators are 25 lb-in. spring

return damper actuators that provide modulating or three-

position control of economizer systems on HVAC equipment.

• M7415 Damper Actuator provides modulating control

of economizer dampers from a thermistor mixed-air or

discharge sensor to maintain 56°F (13°C) air

temperature.

• M8405A Damper Actuator provides three-position

control: closed, adjustable mid-position, and open.

• W7459 logic modules may plug directly onto the

M7415.

• High impact, glass-fiber reinforced, plastic case is

rugged, lightweight and corrosion resistant.

M7215 Damper Motors provide 25 lb-in. torque with spring

return and 2–10 Vdc modulating control of economizer sys-

tems on HVAC equipment.

• M7215 Damper Motors provide modulating control of

economizer dampers from a 2–10 Vdc controller.

• W7212 logic module may plug directly onto the M7215.
T6031H Thermostat acts as changeover thermostat.

• Switches enclosed to resist effects of dust and

moisture.

• Warmer–Cooler temperature scale.
• Sensing bulb installed in return air flow.
W7459A,C Solid State Economizer Logic Module used with

C7400 Solid State Enthalpy Sensors and M7415 or M8405

Damper Actuators to proportion outdoor and return air damp-

ers for economizer control in commercial HVAC equipment.

• Combine functions of solid state enthalpy changeover

control, minimum damper position potentiometer

(W7459A) and compressor staging relays.

• Optional differential enthalpy control provides greater

economizer savings than single enthalpy control by

selecting the most economical air for cooling.

• W7459A mounts on M7415 Damper Actuator and

accepts inputs from C7150B Mixed Air Sensors, C7400

Solid State Enthalpy Sensors, C7046C Discharge Air

Sensor, and optional remote minimum damper

position potentiometer.

• W7459C mounts on M8405A Damper Actuator and

accepts inputs from single pole single throw (spst)

mixed or discharge air control and C7400 Solid State

Enthalpy Sensors.

• Packages are designed to operate from the cooling

space thermostat to provide a totally integrated control

system.

• Enthalpy setpoint (A,B,C,D) located on W7459 Solid

State Economizer Logic Module is used to select

combination of air temperature and humidity that is

suitable for free cooling.

• W7459A include built-in adjustable minimum damper

position potentiometer that controls the amount of

outdoor air admitted to meet minimum ventilation

requirements; includes terminals for connecting

optional remote minimum position potentiometer.

• LED on W7459 indicates free cooling is available when

there is a call for cooling from the thermostat.

W7212A economizer logic module used with C7400 enthalpy

sensors, M7215 or MS7505 damper actuators and C7232

sensors to proportion outdoor and return air dampers

from economizer and demand control ventilation in commer-

cial HVAC equipment.

• Operates from thermostat and DCV sensor to provide a

totally integrated control system.

• Combines minimum and DCV maximum damper

position potentiometers with compressor staging.

• Solid state enthalpy or dry bulb changeover control.
• Terminals included for switching between Occupied

and Unoccupied operation.

• Maximum economizer savings is achieved with two (2)

C7400 enthalpy sensors, one (1) W7212 economizer

logic module, and one (1) C7232 CO

sensor using

differential enthalpy changeover and Demand Control

Ventilation (DCV).

• LED indicates when free cooling is available.
• LED indicates when module is in DCV mode.
• LED indicates when exhaust fan contact is closed.
• W7213 is used with heat pump B terminal.
• W7214 is used with heat pump O terminal.